CN101503239A - Multicomponent composite flocculating setting agent and use in arsenic contamination water treatment - Google Patents

Multicomponent composite flocculating setting agent and use in arsenic contamination water treatment Download PDF

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CN101503239A
CN101503239A CNA2009100805955A CN200910080595A CN101503239A CN 101503239 A CN101503239 A CN 101503239A CN A2009100805955 A CNA2009100805955 A CN A2009100805955A CN 200910080595 A CN200910080595 A CN 200910080595A CN 101503239 A CN101503239 A CN 101503239A
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water
arsenic
flocculating setting
agent
setting agent
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CN101503239B (en
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曲久辉
刘锐平
王洪杰
刘会娟
兰华春
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中国科学院生态环境研究中心
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Abstract

The invention belongs to the technical field of river water body pollution control and in particular relates to a multiple-element compound flocculating settling agent and the application of the multiple-element compounded flocculating settling agent in arsenic pollution water body treatment. The multiple-element compounded flocculating settling agent is prepared by compounding malysite, aluminium salt, hypermanganate, polyacrylamide and aqueous solution. The multiple-element compounded flocculating settling agent can be applied in the arsenic pollution water body treatment to remove arsenic in the arsenic pollutant water body. The concentration of the arsenic in the treated water can meet or is superior to the specified requirement of three types of water on the arsenic concentration in the national earth surface water environment quality standard (less than 0.05 mg/L). The invention also can be used for removing heavy metals such as copper, chromium, cadmium, lead and the like in water by sedimentation. The multiple-element compounded flocculating settling agent can be used together with a multiple-element compounded metal oxide arsenic removal setting agent in static or flowing arsenic pollution water body treatment for removing the arsenic in the water body polluted by arsenic.

Description

Multicomponent composite flocculating setting agent and the application in arsenic polluted water body is administered

Technical field

The invention belongs to river water Pollution abatement technical field, the application in arsenic polluted water body is administered of particularly a kind of multicomponent composite flocculating setting agent and multicomponent composite flocculating setting agent.

Background technology

The arsenic-containing waste water that Industrial processes such as chemical, iron and steel metallurgy, energy minerals produce is the important source of pollution of water body environment pollution, if enter in the environment and may cause severe contamination to water body environments such as river, lake, reservoirs without dealing carefully with, and jeopardize the safety of littoral drinking water source and water quality, tap water is caused major hidden danger.Especially discharge the water body arsenic contamination incident that causes at short notice for some high loading arsenic-containing waste water, more likely since characteristics such as its pollution load height, pollution intensity the be big and downstream lives of the people, fish production, social stability etc. are caused have a strong impact on.China is frequent in recent years takes place owing to arsenic-containing waste water discharges the environmental pollution incident that causes.For example, in April, 2006, Xin Qiang river arsenic contamination incident takes place in yueyang, hunan; 2008, arsenic contamination incidents such as Yunnan Yang Zonghai, Guangxi Hechi, Shangqiu, Henan took place in succession.

For the risk of controlling arsenic contamination and human body, aquatic animals and plants and ecology being caused, China has carried out strict regulation to arsenic concentration limit value in the different water body environments.The existing drinking water standard of country (GB5749-2006) clearly in the regulation tap water arsenic peak concentration must be lower than 0.10mg/L; Require in the water environment quality standard that arsenic concentration should be lower than 0.05mg/L in four classes and the above water body thereof; Regulation drains into that arsenic concentration should be lower than 0.50mg/L in the trade effluent in the water body in the industrial wastewater discharge standard.In addition, also clearly define for the concentration of arsenic in the systems such as soil, agricultural irrigation water, food.

The removal technology of arsenic mainly comprises absorption, flocculation-precipitation-filtration, flocculation-direct filtration, electrodialysis, ion-exchange, membrane sepn etc. in the water.For removing arsenic adsorbent material, common arsenic removal material mainly contain gac, activated alumina, red mud, clinoptilolite, modified activated carbon, hydrous iron oxide, , , material such as manganese sand, hydrated manganese oxide compound, iron-managanese compounded oxide/diatomite.Though the above-mentioned sorbing material that is used for removing tap water arsenic has the ability of arsenic-adsorbing, but often have that the equilibrium adsorption capacity is low excessively, settling velocity is too fast, the absorption reaction deficiency of time, lack suitable problems such as environmental hydraulics condition such as mixing, thereby be difficult to have tangible effect of removing arsenic.The iron-managanese compounded oxide/diatomite of the applicant's early development removes arsenic adsorbent material (CN2006100081358), effectively improved the kinetic reaction speed of material loading capacity and arsenic-adsorbing thereof, but still be difficult to the arsenic in effective sedimentation removal water owing to its sedimentation is too fast.Lee's Gui waits combined oxidation flocculation agent (CN200410058308.8) settling velocity in water of exploitation obviously to reduce in vain, but very high to the HYDRODYNAMIC CONDITION RELATING TO requirement that mixes, reacts in the arsenic removal process, be difficult to be applied to water body arsenic contaminations such as huge lake, reservoir, river and administer.In addition, people such as Cai Yaqi has invented ferric oxide-alumina composite nano materials (CN200710118307.1).This material can effectively be removed pollutent such as arsenic, fluorine in the water, but the material preparation process complexity, the cost costliness is difficult to large-scale application in engineering reality.

For the removal of arsenic in the tap water, often the particulate form sorbing material is seated in the adsorption column, arsenic-containing water is flowed through, and the arsenic contamination thing is able to remove from aqueous phase absorption in the adsorption column process; For the removal technology of arsenic in the impounded bodies such as lake, reservoir, rarely has report both at home and abroad up to now.The multiple element composite metal oxidate arsenic removal settling agent of the applicant's early development (CN200810266740.1) is settled down to lakebed by absorption and the settlement action that forms sinking agent with arsenic in the water, thereby realizes the removal of arsenic in the water body.But this arsenic removal settling agent is primarily aimed at the following characteristics of impounded body arsenic contaminations such as lake, reservoir and administers: the spatial distribution of polluted water body is concentrated relatively, and arsenic removal settling agent easy to implement such as adds at engineering measure; Settling time can be in the time scale scope of a couple of days, tens of days even up to a hundred days.Adopt this arsenic removal settling agent (CN200810266740.1) can solve impounded body arsenic contamination problems such as lake, reservoir.But, for the river that suffers arsenic contamination, channel length often tens of to the several hundred kilometers scope, scope is crossed wide and is difficult to add arsenic removal settling agent; River cross-section is irregular, is difficult to carry out appropriate design and control to adding engineering process; It is often shorter relatively that the river course arsenic contamination is handled the settling time that is allowed, and often requires a few hours can finish the sedimentation of arsenic in the scope by tens of hours.Therefore, if adopt multiple element composite metal oxidate arsenic removal settling agent (CN200810266740:1) at above-mentioned short period scope internal adsorption the sinking agent of arsenic be difficult to abundant sedimentation and effect of removing arsenic is limited, accelerate subsidence rate and then be difficult to guarantee the absorption arsenic removal effect if form the big sinking agent of particle.Therefore, adopt above-mentioned multiple element composite metal oxidate arsenic removal settling agent and engineering scheme thereof to be difficult to effectively solve the problem that the river arsenic polluted water body is administered engineering at impounded bodies such as lake, reservoirs.

At river water topography and geomorphology characteristics and arsenic contamination characteristics, the exploitation performance efficient, with low cost, easy to use and can be in engineering the river arsenic contamination method of improvementing of large-scale application, this is a difficult point problem of needing solution in the present Research And Engineering application badly.The present invention is based on above-mentioned multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1), certain hour after adding multiple element composite metal oxidate arsenic removal settling agent, add a kind of multicomponent composite flocculating setting agent again, thereby optimal control arsenic removal absorption and settling process, the absorption and the settling process that realize arsenic in the water are controlled, guarantee the removal of arsenic.

Summary of the invention

One of purpose of the present invention is at arsenic in the water bodys such as arsenic contamination thing, especially river in the water, provides that a kind of performance is efficient, economically feasible, is easy to the multicomponent composite flocculating setting agent of large-scale application in engineering.

Two of purpose of the present invention provides the application of multicomponent composite flocculating setting agent in arsenic polluted water body is administered, the especially application in arsenic-polluted river is administered.

Know-why of the present invention is: on the basis of multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1), introduce a kind of can make to strengthen be adsorbed on the particulate form arsenic sedimentation on the polynary metal oxide and can fully guarantee the multicomponent composite flocculating setting agent of effect of removing arsenic, thereby guarantee on short time scale particulate form arsenic is settled down to the removal that arsenic is realized in the river bed.

Multicomponent composite flocculating setting agent of the present invention, its sedimentation arsenic removal technology principle is: flocculation agent, permanganate and polyacrylamide (PAM) coagulant aidss etc. such as molysite, aluminium salt are carried out composite, formation can fully be compressed arsenic particulate matter surface potential, enhanced flocculation arsenic nucleus and form, promotes particulate form arsenic cohesion flocculation, strengthens the crosslinked settled arsenic removal settling agent of arsenic particulate matter.In sedimentation arsenic removal process, the particulate matter of having adsorbed arsenic is settled down to the river bed, thereby realizes the removal of particulate form arsenic in the water after taking off steady and being cross-linked to form macrobead under the self gravitation effect.

With the removal of multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1) and multicomponent composite flocculating setting agent combined utilization of the present invention arsenic in river water, treating water can satisfy three class water bodys in China's water environment quality standard to the specified requirement of arsenic contamination thing (<0.05mg/L).Multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1) and multicomponent composite flocculating setting agent combined utilization of the present invention also can effectively be removed arsenic contamination thing in the water bodys such as lake, reservoir, underground water, tap water, trade effluent; In addition, can also remove pollutents such as heavy metals such as copper in the above-mentioned water body, chromium, cadmium, lead, mercury and metallic iron, manganese metal, phosphoric acid salt.

Multicomponent composite flocculating setting agent of the present invention carries out composite obtaining by the coagulant aidss such as flocculation agents such as molysite, aluminium salt, permanganate and polyacrylamide and the aqueous solution; Wherein, multicomponent composite flocculating setting agent in processed water molysite and the total concn scope of aluminium salt be between 2~400mg/L, the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between.

Can also further contain in the above-mentioned multicomponent composite flocculating setting agent with the mass ratio of aluminium salt or molysite be at least a in the group formed of the component such as water glass, sodium polysilicate, sodium phosphate, sodium polyphosphate, sodium alginate, chitosan, starch, cellulose acetate of 0~0.2:1.

Described molysite is selected from least a in the group that iron(ic) chloride, ferric sulfate, iron nitrate, poly-ferric chloride, bodied ferric sulfate, polymerization iron nitrate, PAFS etc. are formed.

Described aluminium salt is selected from least a in the group that Tai-Ace S 150, aluminum chloride, polyaluminium sulfate, polymerize aluminum chloride, aluminum nitrate, polymerization aluminum nitrate, alum, PAFS etc. are formed.

Described permanganate is potassium permanganate, sodium permanganate or their mixture etc.

The preparation method of multicomponent composite flocculating setting agent of the present invention: with molysite, aluminium salt, permanganate and polyacrylamide with water dissolution and fully mix after, directly putting into the molysite in the multicomponent composite flocculating setting agent that formation obtains in the processed water and the total concn scope of aluminium salt is between 2~400mg/L, and the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between.

In the process of the above-mentioned multicomponent composite flocculating setting agent of preparation, can also further add contain with the mass ratio of aluminium salt or molysite be at least a in the group formed of the components such as water glass, sodium polysilicate, sodium phosphate, sodium polyphosphate, sodium alginate, chitosan, starch, cellulose acetate of 0~0.2:1.

Multicomponent composite flocculating setting agent of the present invention can be applied to by in the water body treating of arsenic contamination, removes by the arsenic in the arsenic polluted water body.Treating water can satisfy three class water bodys in China's water environment quality standard to the specified requirement of arsenic contamination thing (<0.05mg/L).

Described multicomponent composite flocculating setting agent is applied to by in the water body treating of arsenic contamination, removal is by the arsenic in the arsenic polluted water body, be that multicomponent composite flocculating setting agent is evenly sprayed on the water surface of arsenic polluted water body, and quiescent setting 24~72 hours, obtain the water after the arsenic removal; The throwing weight range of multicomponent composite flocculating setting agent in water is between 2~500mg/L.

Multicomponent composite flocculating setting agent in processed water molysite and the total concn scope of aluminium salt be between 2~400mg/L, the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between.

When multicomponent composite flocculating setting agent of the present invention and multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1) combined utilization is administered in not mobile or mobile arsenic polluted water body, can reach better effect of removing arsenic, treating water can satisfy three class water bodys in China's water environment quality standard to the specified requirement of arsenic contamination thing (<0.05mg/L).

When multicomponent composite flocculating setting agent of the present invention and multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1) combined utilization is administered in immobilising arsenic polluted water body:

Multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1) is evenly sprayed on the water surface of arsenic polluted water body, after the arrest reaction precipitation 2~72 hours, multicomponent composite flocculating setting agent of the present invention is evenly sprayed on the water surface of arsenic polluted water body, and quiescent setting 24~72 hours, obtain the water after the arsenic removal; Wherein, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is between 1~125mg/L, and the throwing weight range of multicomponent composite flocculating setting agent in water is between 2~500mg/L; Or

Earlier multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1) is joined in the arsenic polluted water body stir afterreaction 0~48 hour of thorough mixing; Add multicomponent composite flocculating setting agent of the present invention afterwards, thorough mixing evenly stirred 1~15 minute once more, and quiescent settling 2~72 hours obtains the water after the arsenic removal; Wherein, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is between 1~125mg/L, and the throwing weight range of multicomponent composite flocculating setting agent in water is between 2~500mg/L.

Multicomponent composite flocculating setting agent in processed water molysite and the total concn scope of aluminium salt be between 2~400mg/L, the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between.

Multicomponent composite flocculating setting agent of the present invention and multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1) combined utilization is when the mobile arsenic polluted water body is administered:

(1) suffers the current downstream of arsenic contamination at mobile, utilize the interception dam that the current interception is lived to let out under the current of avoiding being subjected to arsenic contamination; In the water of interception front, dam, pontoon pump or siphon pipe are set;

(2) will tackle current that the upstream, dam is not subjected to arsenic contamination and the Zhi Liushui that may import these current that are subjected to arsenic contamination and stop, and avoid not being subjected to the current of arsenic contamination to enter in the water that suffers arsenic contamination with the interception dam;

(3) by the upstream of the water that suffers arsenic contamination of the described interception of step (1) dam interception, the length that is provided for adding multiple element composite metal oxidate arsenic removal settling agent is the same with the width of water stream channel has the porous pipe; In the downstream that adds the multiple element composite metal oxidate arsenic removal settling agent place, the length that is provided for adding multicomponent composite flocculating setting agent is the same with the width of water stream channel has the porous pipe; And the distance that adds the multiple element composite metal oxidate arsenic removal settling agent place and add between the multicomponent composite flocculating setting agent place is (if the available water capacity of water stream channel is 0 with the ratio of handling the water yield every day, to represent that then arsenic removal settling agent and flocculating setting agent add in same point) between 0:1~4:1 for the ratio scope of the available water capacity of the water stream channel between the two and the volume of handling the water yield every day; The distance that adds between the described interception of multicomponent composite flocculating setting agent place and step (1) dam is between 1:10~10:1 for the ratio scope of the available water capacity of water stream channel between the two and the volume of handling the water yield every day; At 0.5~10 meter, the rear that adds the multiple element composite metal oxidate arsenic removal settling agent place and/or 0.5~10 meter, rear that adds the multicomponent composite flocculating setting agent place aerating apparatus or whipping appts are set;

(4) the even spraying step (3) setting of multiple element composite metal oxidate arsenic removal settling agent added on the water surface that has the described interception Ba Chu to step (1) of porous pipe place of multiple element composite metal oxidate arsenic removal settling agent, after the arrest reaction precipitation 2~72 hours, and then on this water surface, evenly spray multicomponent composite flocculating setting agent of the present invention, and quiescent setting 24~72 hours, the water after this waters obtains arsenic removal; Wherein, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is between 1~125mg/L, and the throwing weight range of multicomponent composite flocculating setting agent in water is between 2~500mg/L;

Multicomponent composite flocculating setting agent in processed water molysite and the total concn scope of aluminium salt be between 2~400mg/L, the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between;

Let out to the downstream under the upper water overflow of the water after utilizing pontoon pump or siphon pipe with the above-mentioned arsenic removal that obtains then, upstream, the place ahead arsenic-containing water that has porous pipe place that adds multiple element composite metal oxidate arsenic removal settling agent is set this moment, under action of gravity, flow through in turn add multiple element composite metal oxidate arsenic removal settling agent have a porous pipe place, and flow through add multicomponent composite flocculating setting agent have a porous pipe place; Flow through when two places have the porous pipe at arsenic-containing water, multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent add in the water body that enters continuous flow through the porous pipe that has separately, and stir the arsenic removal of carrying out water body under the situation of water body at aerating apparatus or whipping appts, realization contains the continuous processing of arsenic current water, until the arsenic-containing water body between step (1) described interception dam and the described interception of step (2) dam is disposed; Wherein, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is between 1~125mg/L, and the throwing weight range of multicomponent composite flocculating setting agent in water is between 2~500mg/L;

Multicomponent composite flocculating setting agent in processed water molysite and the total concn scope of aluminium salt be between 2~400mg/L, the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between.

The mobile water body that adopts aforesaid method to carry out arsenic contamination is handled, in the water after the processing arsenic concentration can satisfy or be better than three class water bodys in the national water environment quality standard to the specified requirement of arsenic concentration (<0.05mg/L).

Described band foraminous pipe is more than one.

Described multiple element composite metal oxidate arsenic removal settling agent (CN200810266740.1) is to be prepared from through chemical reaction by iron salt solutions, aluminum salt solution, ferrous salt solution, manganese salt solution, permanganate solution.The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide (Fe 2O 3XH 2O), hydronium(ion) oxidation iron (Fe (OH) 3XH 2O), hydration hydroxyl hydrogen ferric oxide (FeOOHxH 2O), hydrated aluminum oxide compound (Al 2O 3XH 2O), hydration aluminum oxyhydroxide (AlOOHxH 2O), W 4600 (Al (OH) 3XH 2O), hydrated manganese oxide compound (MnO 2XH 2O) and hydration hydroxyl hydrogen manganese oxide (MnOOHxH 2O) etc., wherein: X is the number of water molecules; Iron, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6.

In above-mentioned multiple element composite metal oxidate arsenic removal settling agent, can also further contain with the mass ratio of aluminium salt, molysite or manganese salt be at least a in the group formed of water glass, sodium polysilicate, sodium polyphosphate, sodium alginate, chitosan, starch, the polyacrylamide components such as (PAM) of 0~0.1:1.

At least a in the group that components such as the diatomite of the grain diameter that can also further contain mass ratio with aluminium salt, molysite or manganese salt and be 0~2000:1 in above-mentioned multiple element composite metal oxidate arsenic removal settling agent below 100 orders, kaolin, red soil, flyash, red mud, clay are formed.

In above-mentioned multiple element composite metal oxidate arsenic removal settling agent, can also further contain with the mass ratio of aluminium salt, molysite or manganese salt be at least a in the group formed of water glass, sodium polysilicate, sodium polyphosphate, sodium alginate, chitosan, starch, the polyacrylamide of 0~0.1:1, with the mass ratio that contains aluminium salt, molysite or manganese salt be at least a at least a group of forming in the group formed of diatomite, kaolin, red soil, flyash, red mud, the clay of grain diameter below 100 orders of 0~2000:1.

The preparation method of the multiple element composite metal oxidate arsenic removal settling agent among the present invention (CN200810266740.1) is:

(1) with iron salt solutions, aluminum salt solution, ferrous salt solution, manganese salt solution mixing acquisition mixed liquor A, with permanganate solution as solution B; Or

Aluminum salt solution, ferrous salt solution, manganese salt solution are mixed acquisition mixed solution C, iron salt solutions, permanganate solution are mixed obtaining mixed solution D; Or

Iron salt solutions, ferrous salt solution, manganese salt solution are mixed acquisition mixed solution E, aluminum salt solution, permanganate solution are mixed obtaining mixed solution F; Or

Aluminum salt solution, ferrous salt solution are mixed acquisition mixed solution G, iron salt solutions, permanganate solution are mixed obtaining mixed solution H; Or

With iron salt solutions, ferrous salt solution mixing acquisition mixed liquor I, aluminum salt solution, permanganate solution are mixed acquisition mixed solution J; Or

Ferrous salt solution, manganese salt solution as solution K, are mixed acquisition mixed solution L with aluminum salt solution, iron salt solutions, permanganate solution;

Ferrous salt solution as solution M, is mixed acquisition mixed solution N with aluminum salt solution, iron salt solutions, permanganate solution;

Manganese salt solution as solution O, is mixed acquisition mixed solution P with aluminum salt solution, iron salt solutions, permanganate solution;

(2) mixed liquor A that step (1) is obtained and solution B fully mix and carry out chemical reaction, wherein mixing reaction time range is 10 minutes~6 hours, and the iron in the multiple element composite metal oxidate arsenic removal settling agent that obtains, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6; Or

Mixed solution C and mixed solution D fully mixed carry out chemical reaction, wherein mixing reaction time range is 10 minutes~6 hours, and the iron in the multiple element composite metal oxidate arsenic removal settling agent that obtains, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6; Or

Mixed solution E and mixed solution F fully mixed carry out chemical reaction, wherein mixing reaction time range is 10 minutes~6 hours, and the iron in the multiple element composite metal oxidate arsenic removal settling agent that obtains, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6; Or

Solution G and mixed solution H fully mixed carry out chemical reaction, wherein mixing reaction time range is 10 minutes~6 hours, and the iron in the multiple element composite metal oxidate arsenic removal settling agent that obtains, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6; Or

Mixed liquor I and mixed solution J fully mixed carry out chemical reaction, wherein mixing reaction time range is 10 minutes~6 hours, and the iron in the multiple element composite metal oxidate arsenic removal settling agent that obtains, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6; Or

Mixed solution K and mixed solution L fully mixed carry out chemical reaction, wherein mixing reaction time range is 10 minutes~6 hours, and the iron in the multiple element composite metal oxidate arsenic removal settling agent that obtains, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6; Or

Mixed solution M and mixed solution N fully mixed carry out chemical reaction, wherein mixing reaction time range is 10 minutes~6 hours, and the iron in the multiple element composite metal oxidate arsenic removal settling agent that obtains, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6; Or

Mixed solution O and mixed solution P fully mixed carry out chemical reaction, wherein mixing reaction time range is 10 minutes~6 hours, and the iron in the multiple element composite metal oxidate arsenic removal settling agent that obtains, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6.

In the process of the above-mentioned multiple element composite metal oxidate arsenic removal settling agent of preparation, can also further add contain with the mass ratio of aluminium salt, molysite or manganese salt be at least a in the group formed of the components such as water glass, sodium polysilicate, sodium polyphosphate, sodium alginate, chitosan, starch, polyacrylamide of 0~0.1:1; Or

At least a in the group that components such as the diatomite of the grain diameter that further adds the mass ratio that contains with aluminium salt, molysite or manganese salt and be 0~2000:1 below 100 orders, kaolin, red soil, flyash, red mud, clay are formed; Or

Further add contain with the mass ratio of aluminium salt, molysite or manganese salt be at least a in the group formed of the components such as water glass, sodium polysilicate, sodium polyphosphate, sodium alginate, chitosan, starch, polyacrylamide of 0~0.1:1, with the mass ratio that contains aluminium salt, molysite or manganese salt be at least a at least a group of forming in the group formed of components such as diatomite below 100 orders of the grain diameter of 0~2000:1, kaolin, red soil, flyash, red mud, clay.

Described molysite is selected from least a in the group that iron(ic) chloride, ferric sulfate, iron nitrate, poly-ferric chloride, bodied ferric sulfate, polymerization iron nitrate, PAFS etc. are formed.

Described aluminium salt is selected from least a in the group that Tai-Ace S 150, aluminum chloride, polyaluminium sulfate, polymerize aluminum chloride, aluminum nitrate, polymerization aluminum nitrate, alum, PAFS etc. are formed.

Described permanganate is potassium permanganate, sodium permanganate or their mixture.

Described ferrous salt is at least a in the group formed such as ferrous sulfate, Iron nitrate, iron protochloride.

Described manganese salt is at least a in the group formed such as manganous sulfate, manganous nitrate, Manganous chloride tetrahydrate.

The technique effect that the present invention realizes is as follows:

Multicomponent composite flocculating setting agent that the present invention relates to and multiple element composite metal oxidate arsenic removal settling agent all adopt common common water treatment agent and/or material preparation to form, and the preparation method is simple, and is with low cost, uses easy and simple to handle; The two unites the improvement that use can realize arsenic-polluted river more effectively.

1. multicomponent composite flocculating setting agent preparation manipulation process is simple, is easy to realize; The material that is adopted is water purification medicament or water-purifying material commonly used in the water treatment, and is with low cost;

2. the application mode of multicomponent composite flocculating setting agent is flexible, both can be used for the not processing of mobile arsenic-containing water body, also can be used for the processing of mobile arsenic-containing water body;

3. the above-mentioned water body treating method that contains arsenic contamination to not flowing or flowing is simple, and as to containing the river improvement of arsenic contamination, its engineering construction is simple, and operating process is simple and easy, short instant effect of duration;

4. above-mentionedly contain the water body treatment process of arsenic contamination to not flowing or flowing, treating water is satisfied or be better than three class water bodys in the national water environment quality standard to the specified requirement of arsenic concentration (<0.05mg/L);

5. the improvement method of above-mentioned multicomponent composite flocculating setting agent and the water body that contains arsenic contamination to not flowing or flowing can also be used for removing water body arsenic contamination things such as lake, reservoir, underground water, tap water, trade effluent;

6. above-mentioned multicomponent composite flocculating setting agent and contain the water body treating method of arsenic contamination to not flowing or flowing can also be used for sedimentation and remove pollutents such as heavy metal such as the copper of water, chromium, cadmium, lead and iron, manganese, phosphoric acid salt.

Embodiment

Embodiment 1

Multicomponent composite flocculating setting agent preparation: iron trichloride, aluminum chloride, potassium permanganate joined simultaneously in the dissolving tank that water is housed fully stirring and dissolving, make that the concentration of aluminium salt and molysite is 2g/L in the water, the concentration of potassium permanganate is 0.02g/L.

The mixed aqueous solution (iron trichloride, aluminum chloride, the ferrous sulfate concentration in mixed aqueous solution is 2g/L) that multiple element composite metal oxidate arsenic removal settling agent is made up of the aqueous solution of the aqueous solution of the aqueous solution of iron trichloride, aluminum chloride, ferrous sulfate mixes stirring reaction with potassium permanganate solution (concentration of potassium permanganate is 1g/L) and prepared in 10 minutes; The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 5:1:2.

Be applied to the arsenic contamination lake cleaning: arsenic concentration is 0.20mg/L in the arsenic polluted water body.At first, the even spraying of multiple element composite metal oxidate arsenic removal settling agent suffered on the water surface to be clean of arsenic contamination, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent is 100mg/L, arrest reaction precipitation 2 hours; Afterwards multicomponent composite flocculating setting agent is evenly sprayed and be deposited on the water surface, the iron trichloride in the multicomponent composite flocculating setting agent that formation obtains in processed water and the total concn of aluminum chloride are 20mg/L, and the mol ratio of iron trichloride and aluminum chloride is 0.82:1; Potassium permanganate is 1% of iron trichloride and aluminum chloride gross weight.Added behind the multicomponent composite flocculating setting agent quiescent setting 24 hours, handle arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Embodiment 2

Multicomponent composite flocculating setting agent preparation: aluminum chloride, iron nitrate and alum are joined abundant stirring and dissolving in the dissolving tank that water is housed simultaneously, make that the aluminium salt concn is 20g/L in the water, iron salt concentration is 0.2g/L, and potassium permanganate concentration is 0.05g/L.

Being applied to the arsenic contamination reservoir purifies: arsenic concentration is 0.10mg/L in the arsenic polluted water body.Multicomponent composite flocculating setting agent evenly sprays and is deposited on the water surface, and the iron trichloride in the multicomponent composite flocculating setting agent that formation obtains in processed water and the total concn of aluminum chloride are 2mg/L, and the mol ratio of iron trichloride and aluminum chloride is 0.82%:1; Potassium permanganate is 2.5% of iron trichloride and aluminum chloride gross weight.Added behind the multicomponent composite flocculating setting agent quiescent setting 48 hours, handle arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Embodiment 3

Multicomponent composite flocculating setting agent preparation: aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate, PAFS, potassium permanganate, polyacrylamide are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 3000g/L in the water, iron salt concentration is 1000g/L, potassium permanganate concentration is 10g/L, and concentration of polyacrylamide is 0.2g/L.

Multiple element composite metal oxidate arsenic removal settling agent was prepared by the aqueous solution of the aqueous solution of aluminum chloride, ferrous sulfate mixed aqueous solution of forming (aluminum chloride, the ferrous sulfate concentration in mixed aqueous solution is 2g/L) and mixed aqueous solution (concentration of iron trichloride in mixed aqueous solution is 2g/L, the concentration 1g/L of potassium permanganate in mixed aqueous solution) the mixing stirring reaction of being made up of ferric chloride aqueous solutions, potassium permanganate solution in 6 hours; The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 4:1:2.

Be applied to the arsenic contamination lake cleaning: arsenic concentration is 1.50mg/L in the arsenic polluted water body.At first even spraying of multiple element composite metal oxidate arsenic removal settling agent suffered on the water surface to be clean of arsenic contamination, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent is 200mg/L, arrest reaction precipitation 72 hours; Afterwards multicomponent composite flocculating setting agent is evenly sprayed and be deposited on the water surface, the total concn that forms aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and PAFS in the multicomponent composite flocculating setting agent that obtains in processed water is 500mg/L, and the mol ratio of the aluminium element in ferro element in bodied ferric sulfate and the PAFS and aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate and the PAFS is 0.27:1; Potassium permanganate be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS ferro element and aluminium element gross weight 0.25%, polyacrylamide be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS ferro element and aluminium element gross weight 0.05%.Added behind the multicomponent composite flocculating setting agent quiescent setting 72 hours, handle arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Embodiment 4

Multicomponent composite flocculating setting agent preparation: aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, water glass, sodium polysilicate, bodied ferric sulfate, PAFS, potassium permanganate, polyacrylamide are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 3000g/L in the water, iron salt concentration is 1000g/L, potassium permanganate concentration is 100g/L, concentration of polyacrylamide is 0.2g/L, and water glass and sodium polysilicate concentration are 100g/L.

The mixed aqueous solution (iron trichloride, aluminum chloride, ferrous sulfate, the Manganous chloride tetrahydrate concentration in mixed aqueous solution is 2g/L) that multiple element composite metal oxidate arsenic removal settling agent is made up of the aqueous solution of the aqueous solution of the aqueous solution of the aqueous solution of iron trichloride, aluminum chloride, ferrous sulfate, Manganous chloride tetrahydrate mixes stirring reaction with aqueous sodium permanganate solution (concentration of aqueous solution of sodium permanganate is 1g/L) and prepared in 2 hours; The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 2:2:1.

Be applied to the arsenic contamination lake cleaning: arsenic concentration is 1.50mg/L in the arsenic polluted water body.At first, the even spraying of multiple element composite metal oxidate arsenic removal settling agent suffered on the water surface to be clean of arsenic contamination, multiple element composite metal oxidate arsenic removal settling agent throwing amount is 250mg/L, arrest reaction precipitation 48 hours; Afterwards multicomponent composite flocculating setting agent is evenly sprayed and be deposited on the water surface, the total concn that forms aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and PAFS in the multicomponent composite flocculating setting agent that obtains in processed water is 40mg/L, and the mol ratio of the aluminium element in ferro element in bodied ferric sulfate and the PAFS and aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate and the PAFS is 0.27:1; Potassium permanganate is aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 2.5% of ferro element and aluminium element gross weight, polyacrylamide is an aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 0.05% of ferro element and aluminium element gross weight, water glass and sodium polysilicate are aluminum chlorides, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 2.5% of ferro element and aluminium element gross weight.Added behind the multicomponent composite flocculating setting agent quiescent setting 72 hours, handle arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Embodiment 5

Multicomponent composite flocculating setting agent preparation: aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate, PAFS, potassium permanganate, polyacrylamide, sodium alginate, chitosan, starch are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 3000g/L in the water, iron salt concentration is 1000g/L, potassium permanganate concentration is 0.1g/L, concentration of polyacrylamide is 0.2g/L, sodium alginate concentration is 50g/L, and chitosan and starch concentration are respectively 10g/L.

Multiple element composite metal oxidate arsenic removal settling agent is the aqueous solution by iron trichloride, the aqueous solution of ferric sulfate, the aqueous solution of iron nitrate, the aqueous solution of aluminum chloride, aqueous solution of aluminum nitrate, the aqueous solution of Tai-Ace S 150, the aqueous solution of ferrous sulfate, the aqueous solution of Manganous chloride tetrahydrate, mixed aqueous solution (the iron trichloride that manganese sulfate solution is formed, ferric sulfate, iron nitrate, aluminum chloride, aluminum nitrate, Tai-Ace S 150, ferrous sulfate, Manganous chloride tetrahydrate, the concentration of manganous sulfate in mixed aqueous solution is 2g/L) with by the aqueous solution of potassium permanganate, the aqueous solution of polymerize aluminum chloride, the aqueous solution of bodied ferric sulfate, (the potassium permanganate concentration in mixed aqueous solution is 5g/L to the mixed aqueous solution that the polymerization iron nitrate solution is formed, polymerize aluminum chloride, bodied ferric sulfate, the concentration of polymerization iron nitrate is 1g/L) mix that stirring reaction prepared in 3 hours; The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 3:6:1.

Be applied to the arsenic contamination lake cleaning: arsenic concentration is 1.50mg/L in the arsenic polluted water body.At first, the even spraying of multiple element composite metal oxidate arsenic removal settling agent suffered on the water surface to be clean of arsenic contamination, multiple element composite metal oxidate arsenic removal settling agent throwing amount is 250mg/L, arrest reaction precipitation 48 hours; Afterwards multicomponent composite flocculating setting agent is evenly sprayed and be deposited on the water surface, the total concn that forms aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and PAFS in the multicomponent composite flocculating setting agent that obtains in processed water is 40mg/L, and the mol ratio of the aluminium element in ferro element in bodied ferric sulfate and the PAFS and aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate and the PAFS is 0.27:1; Potassium permanganate is aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 0.0025% of ferro element and aluminium element gross weight, polyacrylamide is an aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 0.05% of ferro element and aluminium element gross weight, sodium alginate concentration is an aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 1.25% of ferro element and aluminium element gross weight, chitosan and starch concentration are aluminum chlorides, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 0.25% of ferro element and aluminium element gross weight.Added behind the multicomponent composite flocculating setting agent quiescent setting 72 hours, handle arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Embodiment 6

Multicomponent composite flocculating setting agent preparation: aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate, PAFS, potassium permanganate, polyacrylamide are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 3000g/L in the water, iron salt concentration is 1000g/L, potassium permanganate concentration is 0.1g/L, and concentration of polyacrylamide is 0.2g/L.

Multiple element composite metal oxidate arsenic removal settling agent was prepared with mixed aqueous solution (concentration of the iron trichloride in the mixed aqueous solution is 2g/L, and the concentration of potassium permanganate is 4g/L) the mixing stirring reaction of being made up of ferric chloride aqueous solutions, potassium permanganate solution by the aqueous solution of the aqueous solution of aluminum chloride, ferrous sulfate, the mixed aqueous solution that manganese chloride solution is formed (concentration of the aluminum chloride in the mixed aqueous solution is that the concentration of 1g/L, ferrous sulfate is that the concentration of 1g/L, Manganous chloride tetrahydrate is 2g/L) in 6 hours; The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 3:6:1.

Be applied to the arsenic contamination lake cleaning: arsenic concentration is 1.00mg/L in the arsenic polluted water body.At first, the even spraying of multiple element composite metal oxidate arsenic removal settling agent suffered on the water surface to be clean of arsenic contamination, multiple element composite metal oxidate arsenic removal settling agent throwing amount is 100mg/L, arrest reaction precipitation 36 hours; Afterwards multicomponent composite flocculating setting agent is evenly sprayed and be deposited on the water surface, the total concn that forms aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and PAFS in the multicomponent composite flocculating setting agent that obtains in processed water is 400mg/L, and the mol ratio of the aluminium element in ferro element in bodied ferric sulfate, the PAFS and aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate and the PAFS is 0.27:1; Potassium permanganate be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS ferro element and aluminium element gross weight 0.0025%, polyacrylamide be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS ferro element and aluminium element gross weight 0.05%.Added behind the multicomponent composite flocculating setting agent quiescent setting 12 hours, handle arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Embodiment 7

Multicomponent composite flocculating setting agent preparation: aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate, PAFS, potassium permanganate, polyacrylamide are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 3000g/L in the water, iron salt concentration is 1000g/L, potassium permanganate concentration is 0.1g/L, and concentration of polyacrylamide is 0.2g/L.

Multiple element composite metal oxidate arsenic removal settling agent mixes stirring reaction preparation in 6 hours by the aqueous solution of the aqueous solution of iron trichloride, ferrous sulfate, the mixed aqueous solution that manganese sulfate solution is formed (concentration of the iron trichloride in the mixed aqueous solution is that the concentration of 2g/L, copperas solution is that the concentration of 1g/L, manganese sulfate solution is 2g/L) and mixed aqueous solution (concentration of aluminum chloride is 15g/L, and the concentration of sodium permanganate is 3g/L) by aluminum trichloride solution, sodium permanganate and gets.The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 1:2:6.

Be applied to the arsenic contamination lake cleaning: arsenic concentration is 0.50mg/L in the arsenic polluted water body.At first, the even spraying of multiple element composite metal oxidate arsenic removal settling agent suffered on the water surface to be clean of arsenic contamination, multiple element composite metal oxidate arsenic removal settling agent throwing amount is 50mg/L, arrest reaction precipitation 12 hours; Afterwards multicomponent composite flocculating setting agent is evenly sprayed and be deposited on the water surface, the total concn that forms aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and PAFS in the multicomponent composite flocculating setting agent that obtains in processed water is 200mg/L, and the mol ratio of the aluminium element in ferro element in bodied ferric sulfate and the PAFS and aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate and the PAFS is 0.27:1; Potassium permanganate be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS ferro element and aluminium element gross weight 0.0025%, polyacrylamide be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS ferro element and aluminium element gross weight 0.05%.Added behind the multicomponent composite flocculating setting agent quiescent setting 72 hours, handle arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Embodiment 8

Multicomponent composite flocculating setting agent preparation: aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate, PAFS, potassium permanganate, polyacrylamide are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 460g/L in the water, iron salt concentration is 40g/L, potassium permanganate concentration is 0.5g/L, and concentration of polyacrylamide is 2g/L.

Multiple element composite metal oxidate arsenic removal settling agent mixes stirring reaction by the aqueous solution of the aqueous solution of the aqueous solution of the aqueous solution of iron trichloride, aluminum chloride, ferrous sulfate, calcium chloride, mixed aqueous solution (iron trichloride, aluminum chloride, the ferrous sulfate concentration in mixed aqueous solution is 2g/L, and calcium chloride is 0.5g/L with the concentration of magnesium chloride in mixed aqueous solution) that magnesium chloride solution is formed with potassium permanganate solution (concentration of potassium permanganate solution is 1g/L) and prepared in 30 minutes; The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 3:1:2.

Being applied to arsenic-polluted river purifies: arsenic concentration is 1.50mg/L in the arsenic polluted water body.Administer according to following steps:

(1) suffers the current downstream of arsenic contamination at mobile, utilize the interception dam that the current interception is lived to let out under the current of avoiding being subjected to arsenic contamination; In the water of interception front, dam, pontoon pump or siphon pipe are set;

(2) will tackle current that the upstream, dam is not subjected to arsenic contamination and the Zhi Liushui that may import these current that are subjected to arsenic contamination and stop, and avoid not being subjected to the current of arsenic contamination to enter in the water that suffers arsenic contamination with the interception dam;

(3) by the upstream of the water that suffers arsenic contamination of the described interception of step (1) dam interception, the length that is provided for adding multiple element composite metal oxidate arsenic removal settling agent is the same with the width of water stream channel has the porous pipe; In the downstream that adds the multiple element composite metal oxidate arsenic removal settling agent place, the length that is provided for adding multicomponent composite flocculating setting agent is the same with the width of water stream channel has the porous pipe; And the distance that adds the multiple element composite metal oxidate arsenic removal settling agent place and add between the multicomponent composite flocculating setting agent place is 1:1 for the ratio of the available water capacity of the water stream channel between the two and the volume of handling the water yield every day; The distance that adds between the described interception of multicomponent composite flocculating setting agent place and step (1) dam is 1:1 for the ratio of the available water capacity of water stream channel between the two and the volume of handling the water yield every day; At 0.5m place, rear that adds the multiple element composite metal oxidate arsenic removal settling agent place and the 0.5m place, rear that adds the multicomponent composite flocculating setting agent place aerating apparatus is set;

(4) the even spraying step (3) setting of multiple element composite metal oxidate arsenic removal settling agent added on the water surface that has the described interception Ba Chu to step (1) of porous pipe place of multiple element composite metal oxidate arsenic removal settling agent, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 100mg/L.After the arrest reaction precipitation 2 hours, the even spraying of multicomponent composite flocculating setting agent is deposited on the water surface, the total concn that forms aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and PAFS in the multicomponent composite flocculating setting agent that obtains in processed water is 100mg/L, and the mol ratio of the aluminium element in ferro element in bodied ferric sulfate and the PAFS and aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate and the PAFS is 0.07:1; Potassium permanganate be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS ferro element and aluminium element gross weight 0.1%, polyacrylamide be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS ferro element and aluminium element gross weight 0.4%.Added behind the multicomponent composite flocculating setting agent quiescent setting 24 hours, handle in this waters arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L);

Let out to the downstream under the upper water overflow of the water after utilizing pontoon pump or siphon pipe with the above-mentioned arsenic removal that obtains then, upstream, the place ahead arsenic-containing water that has porous pipe place that adds multiple element composite metal oxidate arsenic removal settling agent is set this moment, under action of gravity, flow through in turn add multiple element composite metal oxidate arsenic removal settling agent have a porous pipe place, and flow through add multicomponent composite flocculating setting agent have a porous pipe place; Flow through when two places have the porous pipe at arsenic-containing water, multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent add in the water body that enters continuous flow through the porous pipe that has separately, and stir the arsenic removal of carrying out water body under the situation of water body at aerating apparatus, realization contains the continuous processing of arsenic current water, until the arsenic-containing water body between step (1) described interception dam and the described interception of step (2) dam is disposed.Wherein, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 100mg/L, and the throwing amount of multicomponent composite flocculating setting agent in water is 100mg/L, and the composition and the content that form the multicomponent composite flocculating setting agent that obtains in processed water are same as above.

The mobile water body that adopts aforesaid method to carry out arsenic contamination is handled, in the water after the processing arsenic concentration can satisfy or be better than three class water bodys in the national water environment quality standard to the specified requirement of arsenic concentration (<0.05mg/L).

Embodiment 9

Multicomponent composite flocculating setting agent preparation: aluminum chloride, bodied ferric sulfate, potassium permanganate joined simultaneously in the dissolving tank that water is housed fully stirring and dissolving, make that the aluminium salt concn is 4.6g/L in the water, iron salt concentration is 0.4g/L, and potassium permanganate concentration is 0.5g/L.

Being applied to the arsenic contamination water channel purifies: arsenic concentration is 0.2mg/L in the arsenic polluted water body.Administer according to following steps:

(1) suffers the current downstream of arsenic contamination at mobile, utilize the interception dam that the current interception is lived to let out under the current of avoiding being subjected to arsenic contamination; In the water of interception front, dam, pontoon pump or siphon pipe are set;

(2) will tackle current that the upstream, dam is not subjected to arsenic contamination and the Zhi Liushui that may import these current that are subjected to arsenic contamination and stop, and avoid not being subjected to the current of arsenic contamination to enter in the water that suffers arsenic contamination with the interception dam;

(3) by the upstream of the water that suffers arsenic contamination of the described interception of step (1) dam interception, be provided for simultaneously adding multiple element composite metal oxidate arsenic removal settling agent the same with the width that adds the settled length of polynary composite flocculation arsenic removal and water stream channel have a porous pipe; Add multiple element composite metal oxidate arsenic removal settling agent and add the multicomponent composite flocculating setting agent place and the described interception of step (1) dam between distance be 10:1 for the ratio of the useful capacity of water stream channel between the two and the volume of handling the water yield every day; At the 5m place, rear that adds multiple element composite metal oxidate arsenic removal settling agent and add the multicomponent composite flocculating setting agent place aerating apparatus or whipping appts are set all;

(4) the even spraying step (3) setting of multiple element composite metal oxidate arsenic removal settling agent added on the water surface that has the described interception Ba Chu to step (1) of porous pipe place of multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 50mg/L, arrest reaction precipitation 72 hours; Afterwards, the even spraying of multicomponent composite flocculating setting agent is deposited on the water surface, the total concn of aluminum chloride and bodied ferric sulfate is 200mg/L in the multicomponent composite flocculating setting agent that formation obtains in processed water, and the ferro element in the bodied ferric sulfate and the mol ratio of the aluminium element in the aluminum chloride are 0.87:1; Potassium permanganate be in aluminum chloride and the bodied ferric sulfate ferro element and aluminium element gross weight 10%.Added behind the multicomponent composite flocculating setting agent quiescent setting 48 hours, handle in this waters arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Let out to the downstream under the upper water overflow of the water after utilizing pontoon pump or siphon pipe with the above-mentioned arsenic removal that obtains then, upstream, the place ahead arsenic-containing water that has porous pipe place that adds multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent is set this moment, under action of gravity, flow through add multiple element composite metal oxidate arsenic removal settling agent and add multicomponent composite flocculating setting agent have a porous pipe place, flow through when this place has the porous pipe at arsenic-containing water, multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent add in the water body that enters continuous flow through the porous pipe that has separately, and stir the arsenic removal of carrying out water body under the situation of water body at aerating apparatus, realization contains the continuous processing of arsenic current water, until the arsenic-containing water body between step (1) described interception dam and the described interception of step (2) dam is disposed.Wherein, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 40mg/L, and the throwing amount of multicomponent composite flocculating setting agent in water is 100mg/L, and the composition and the content that form the multicomponent composite flocculating setting agent that obtains in processed water are same as above.

The mobile water body that adopts aforesaid method to carry out arsenic contamination is handled, in the water after the processing arsenic concentration can satisfy or be better than three class water bodys in the national water environment quality standard to the specified requirement of arsenic concentration (<0.05mg/L).

Described multiple element composite metal oxidate arsenic removal settling agent is the aqueous solution by iron trichloride, the aqueous solution of aluminum chloride, the aqueous solution of ferrous sulfate, the aqueous solution of water glass, the aqueous solution of sodium polysilicate, mixed aqueous solution (the iron trichloride that the aqueous solution of sodium polyphosphate is formed, aluminum chloride, the concentration of ferrous sulfate in mixed aqueous solution is 2g/L, water glass, sodium polysilicate, the concentration of sodium polyphosphate in mixed aqueous solution is 0.5g/L) mixed aqueous solution (the potassium permanganate concentration in the mixed solution is 1g/L, and sodium permanganate concentration is 2g/L) that obtains with aqueous solution by the aqueous solution of potassium permanganate and sodium permanganate mixes stirring reaction and prepared in 30 minutes; The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 3:3:2.

Embodiment 10

Multicomponent composite flocculating setting agent preparation: polymerize aluminum chloride, Tai-Ace S 150, potassium permanganate, iron trichloride, polyacrylamide are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 1000g/L in the water, iron salt concentration is 500g/L, potassium permanganate concentration is 5g/L, and concentration of polyacrylamide is 20g/L.

Being applied to arsenic-polluted river purifies: arsenic concentration is 1.50mg/L in the arsenic polluted water body.Administer according to following steps:

(1) suffers the current downstream of arsenic contamination at mobile, utilize the interception dam that the current interception is lived to let out under the current of avoiding being subjected to arsenic contamination; In the water of interception front, dam, pontoon pump or siphon pipe are set;

(2) will tackle current that the upstream, dam is not subjected to arsenic contamination and the Zhi Liushui that may import these current that are subjected to arsenic contamination and stop, and avoid the water in tributary to enter in the water that suffers arsenic contamination with the interception dam;

(3) by the upstream of the water that suffers arsenic contamination of the described interception of step (1) dam interception, the length that is provided for adding multiple element composite metal oxidate arsenic removal settling agent is the same with the width of water stream channel has the porous pipe; In the downstream that adds the multiple element composite metal oxidate arsenic removal settling agent place, the length that is provided for adding multicomponent composite flocculating setting agent is the same with the width of water stream channel has the porous pipe; And the distance that adds the multiple element composite metal oxidate arsenic removal settling agent place and add between the multicomponent composite flocculating setting agent place is 4:1 for the ratio scope of the useful capacity of the water stream channel between the two and the volume of handling the water yield every day; The distance that adds between the described interception of multicomponent composite flocculating setting agent place and step (1) dam is 1:10 for the ratio scope of the useful capacity of water stream channel between the two and the volume of handling the water yield every day; At the 4m place, rear that adds the multiple element composite metal oxidate arsenic removal settling agent place and the 5m place, rear that adds the multicomponent composite flocculating setting agent place aerating apparatus or whipping appts all are set;

(4) the even spraying step (3) setting of multiple element composite metal oxidate arsenic removal settling agent added on the water surface that has the described interception Ba Chu to step (1) of porous pipe place of multiple element composite metal oxidate arsenic removal settling agent, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 400mg/L, arrest reaction precipitation 48 hours.Afterwards, the even spraying of multicomponent composite flocculating setting agent is deposited on the water surface, the total concn that forms polymerize aluminum chloride, Tai-Ace S 150 and iron trichloride in the multicomponent composite flocculating setting agent that obtains in processed water is 400mg/L, and the mol ratio of the aluminium element in ferro element in the iron trichloride and polymerize aluminum chloride and the Tai-Ace S 150 is 0.5:1; Potassium permanganate be in polymerize aluminum chloride, Tai-Ace S 150 and the iron trichloride ferro element and aluminium element gross weight 0.33%; Polyacrylamide be in polymerize aluminum chloride, Tai-Ace S 150, the iron trichloride ferro element and aluminium element gross weight 1.3%.Staticly settled 72 hours after adding multicomponent composite flocculating setting agent, handle in this waters arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Let out to the downstream under the upper water overflow of the water after utilizing pontoon pump or siphon pipe with the above-mentioned arsenic removal that obtains then, upstream, the place ahead arsenic-containing water that has porous pipe place that adds multiple element composite metal oxidate arsenic removal settling agent is set this moment, under action of gravity, flow through in turn add multiple element composite metal oxidate arsenic removal settling agent have a porous pipe place, and flow through add multicomponent composite flocculating setting agent have a porous pipe place; Flow through when two places have the porous pipe at arsenic-containing water, multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent add in the water body that enters continuous flow through the porous pipe that has separately, and stir the arsenic removal of carrying out water body under the situation of water body at aerating apparatus, realization contains the continuous processing of arsenic current water, until the arsenic-containing water body between step (1) described interception dam and the described interception of step (2) dam is disposed.Wherein, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 200mg/L, and the throwing amount of multicomponent composite flocculating setting agent in water is 50mg/L, and the composition and the content that form the multicomponent composite flocculating setting agent that obtains in processed water are same as above.

The mobile water body that adopts aforesaid method to carry out arsenic contamination is handled, in the water after the processing arsenic concentration can satisfy or be better than three class water bodys in the national water environment quality standard to the specified requirement of arsenic concentration (<0.05mg/L).

Described multiple element composite metal oxidate arsenic removal settling agent is the aqueous solution by iron trichloride, the aqueous solution of aluminum chloride, mixed solution (the iron trichloride that the aqueous solution of ferrous sulfate is formed, aluminum chloride, the concentration of ferrous sulfate in mixed aqueous solution is 2g/L) with by the aqueous solution of potassium permanganate, the aqueous solution of water glass, the aqueous solution of chitosan, (concentration of permanganate in mixed aqueous solution is 4g/L to the mixed aqueous solution that the aqueous solution of PAM is formed, water glass, chitosan, the concentration of PAM in mixed aqueous solution is 1g/L) mix that stirring reaction prepared in 6 hours; The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 4:2:1.

Embodiment 11

Multicomponent composite flocculating setting agent preparation: aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate, PAFS, potassium permanganate, polyacrylamide are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 600g/L in the water, iron salt concentration is 400g/L, potassium permanganate concentration is 500g/L, and concentration of polyacrylamide is 2g/L.

Being applied to arsenic-polluted river purifies: arsenic concentration is 1.0mg/L in the arsenic polluted water body.Administer according to following steps:

(1) suffers the current downstream of arsenic contamination at mobile, utilize the interception dam that the current interception is lived to let out under the current of avoiding being subjected to arsenic contamination; In the water of interception front, dam, pontoon pump or siphon pipe are set;

(2) will tackle current that the upstream, dam is not subjected to arsenic contamination and the Zhi Liushui that may import these current that are subjected to arsenic contamination and stop, and avoid the water in tributary to enter in the water that suffers arsenic contamination with the interception dam;

(3) by the upstream of the water that suffers arsenic contamination of the described interception of step (1) dam interception, the length that is provided for adding multiple element composite metal oxidate arsenic removal settling agent is the same with the width of water stream channel has the porous pipe; In the downstream that adds the multiple element composite metal oxidate arsenic removal settling agent place, the length that is provided for adding multicomponent composite flocculating setting agent is the same with the width of water stream channel has the porous pipe; And the distance that adds the multiple element composite metal oxidate arsenic removal settling agent place and add between the multicomponent composite flocculating setting agent place is 2:1 for the ratio scope of the useful capacity of the water stream channel between the two and the volume of handling the water yield every day; The distance that adds between the described interception of multicomponent composite flocculating setting agent place and step (1) dam is 10:1 for the ratio scope of the useful capacity of water stream channel between the two and the volume of handling the water yield every day; At the 4m place, rear that adds the multiple element composite metal oxidate arsenic removal settling agent place and the 10m place, rear that adds the multicomponent composite flocculating setting agent place aerating apparatus or whipping appts all are set;

(4) the even spraying step (3) setting of multiple element composite metal oxidate arsenic removal settling agent added on the water surface that has the described interception Ba Chu to step (1) of porous pipe place of multiple element composite metal oxidate arsenic removal settling agent, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is between the 100mg/L, arrest reaction precipitation 24 hours.Afterwards, the even spraying of multicomponent composite flocculating setting agent is deposited on the water surface, form in processed water in the multicomponent composite flocculating setting agent obtain that the total concn of ferro element and aluminium element is 20mg/L in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS, the mol ratio of the aluminium element in ferro element in bodied ferric sulfate and the PAFS and aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate and the PAFS is 0.67:1; Potassium permanganate be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS ferro element and aluminium element gross weight 50%; Polyacrylamide be in polymerize aluminum chloride, Tai-Ace S 150, the iron trichloride ferro element and aluminium element gross weight 0.2%.Added behind the multicomponent composite flocculating setting agent quiescent setting 48 hours, handle in this waters arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Let out to the downstream under the upper water overflow of the water after utilizing pontoon pump or siphon pipe with the above-mentioned arsenic removal that obtains then, upstream, the place ahead arsenic-containing water that has porous pipe place that adds multiple element composite metal oxidate arsenic removal settling agent is set this moment, under action of gravity, flow through in turn add multiple element composite metal oxidate arsenic removal settling agent have a porous pipe place, and flow through add multicomponent composite flocculating setting agent have a porous pipe place; Flow through when two places have the porous pipe at arsenic-containing water, multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent add in the water body that enters continuous flow through the porous pipe that has separately, and stir the arsenic removal of carrying out water body under the situation of water body at whipping appts, realization contains the continuous processing of arsenic current water, until the arsenic-containing water body between step (1) described interception dam and the described interception of step (2) dam is disposed.Wherein, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 100mg/L, and the throwing amount of multicomponent composite flocculating setting agent in water is 50mg/L, and the composition and the content that form the multicomponent composite flocculating setting agent that obtains in processed water are same as above.

The mobile water body that adopts aforesaid method to carry out arsenic contamination is handled, in the water after the processing arsenic concentration can satisfy or be better than three class water bodys in the national water environment quality standard to the specified requirement of arsenic concentration (<0.05mg/L).

Described multiple element composite metal oxidate arsenic removal settling agent is prepared as follows and gets: the mixed aqueous solution (iron trichloride, aluminum chloride, the ferrous sulfate concentration in mixed aqueous solution is 2g/L) that preparation is combined to form by the aqueous solution of the aqueous solution of the aqueous solution of iron trichloride, aluminum chloride, ferrous sulfate, and add diatomite, kaolin, red soil, flyash, red mud and clay (diatomite, kaolin, red soil, flyash, red mud and the clay concentration in mixed aqueous solution is 5g/L) and mix the acquisition mixed liquor A; The aqueous solution (concentration of potassium permanganate in mixed aqueous solution is 4g/L, and water glass, chitosan, the PAM concentration in mixed aqueous solution is 1g/L) and stirring and dissolving that the aqueous solution of the aqueous solution of preparation potassium permanganate, the aqueous solution of water glass, chitosan, the aqueous solution of PAM combine obtain mixed liquid B.Mixing mixed liquor A also with mixed liquid B, stirring reaction prepared and got in 3 hours.The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 4:2:1.

Embodiment 12

Multicomponent composite flocculating setting agent preparation: aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate, PAFS, potassium permanganate, polyacrylamide, water glass, sodium polyphosphate are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 600g/L in the water, iron salt concentration is 400g/L, potassium permanganate concentration is 500g/L, concentration of polyacrylamide is 2g/L, sodium silicate silicate is 20g/L, and sodium polyphosphate concentration is 40g/L.

Being applied to arsenic-polluted river purifies: arsenic concentration is 1.0mg/L in the arsenic polluted water body.Administer according to following steps:

(1) suffers the current downstream of arsenic contamination at mobile, utilize the interception dam that the current interception is lived to let out under the current of avoiding being subjected to arsenic contamination; In the water of interception front, dam, pontoon pump or siphon pipe are set;

(2) will tackle current that the upstream, dam is not subjected to arsenic contamination and the Zhi Liushui that may import these current that are subjected to arsenic contamination and stop, and avoid the water in tributary to enter in the water that suffers arsenic contamination with the interception dam;

(3) by the upstream of the water that suffers arsenic contamination of the described interception of step (1) dam interception, the length that is provided for adding multiple element composite metal oxidate arsenic removal settling agent is the same with the width of water stream channel has the porous pipe; In the downstream that adds the multiple element composite metal oxidate arsenic removal settling agent place, the length that is provided for adding multicomponent composite flocculating setting agent is the same with the width of water stream channel has the porous pipe; And the distance that adds the multiple element composite metal oxidate arsenic removal settling agent place and add between the multicomponent composite flocculating setting agent place is 2:1 for the ratio scope of the useful capacity of the water stream channel between the two and the volume of handling the water yield every day; The distance that adds between the described interception of multicomponent composite flocculating setting agent place and step (1) dam is 5:1 for the ratio scope of the useful capacity of water stream channel between the two and the volume of handling the water yield every day; At the 2m place, rear that adds the multiple element composite metal oxidate arsenic removal settling agent place and the 2m place, rear that adds the multicomponent composite flocculating setting agent place aerating apparatus or whipping appts all are set;

(4) the even spraying step (3) setting of multiple element composite metal oxidate arsenic removal settling agent added on the water surface that has the described interception Ba Chu to step (1) of porous pipe place of multiple element composite metal oxidate arsenic removal settling agent, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is 100mg/L, arrest reaction precipitation 24 hours; Afterwards, the even spraying of multicomponent composite flocculating setting agent is deposited on the water surface, form in processed water in the multicomponent composite flocculating setting agent obtain that the total concn of ferro element and aluminium element is 200mg/L in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the PAFS, the mol ratio of the aluminium element in ferro element in bodied ferric sulfate and the PAFS and aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate and the PAFS is 0.67:1; Potassium permanganate concentration is aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, 50% of bodied ferric sulfate and PAFS gross weight, concentration of polyacrylamide is an aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 0.2% of ferro element and aluminium element gross weight, sodium silicate silicate is an aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 2% of ferro element and aluminium element gross weight, sodium polyphosphate concentration is aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, in bodied ferric sulfate and the PAFS 4% of ferro element and aluminium element gross weight.Added behind the multicomponent composite flocculating setting agent quiescent setting 48 hours, handle in this waters arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Let out to the downstream under the upper water overflow of the water after utilizing pontoon pump or siphon pipe with the above-mentioned arsenic removal that obtains then, upstream, the place ahead arsenic-containing water that has porous pipe place that adds multiple element composite metal oxidate arsenic removal settling agent is set this moment, under action of gravity, flow through in turn add multiple element composite metal oxidate arsenic removal settling agent have a porous pipe place, and flow through add multicomponent composite flocculating setting agent have a porous pipe place; Flow through when two places have the porous pipe at arsenic-containing water, multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent add in the water body that enters continuous flow through the porous pipe that has separately, and stir the arsenic removal of carrying out water body under the situation of water body at aerating apparatus, realization contains the continuous processing of arsenic current water, until the arsenic-containing water body between step (1) described interception dam and the described interception of step (2) dam is disposed.Wherein, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 80mg/L, and the throwing amount of multicomponent composite flocculating setting agent in water is 100mg/L, and the composition and the content that form the multicomponent composite flocculating setting agent that obtains in processed water are same as above.

The mobile water body that adopts aforesaid method to carry out arsenic contamination is handled, in the water after the processing arsenic concentration can satisfy or be better than three class water bodys in the national water environment quality standard to the specified requirement of arsenic concentration (<0.05mg/L).

Described multiple element composite metal oxidate arsenic removal settling agent is prepared as follows and gets: the mixed aqueous solution (iron trichloride, aluminum chloride, the ferrous sulfate concentration in mixed aqueous solution is 2g/L) that the aqueous solution of the aqueous solution of preparation iron trichloride, the aqueous solution of aluminum chloride, ferrous sulfate is formed, and add diatomite and kaolin (diatomite and the kaolin concentration in mixed aqueous solution is 50g/L) and mix the acquisition mixed liquor A; The mixed aqueous solution of the aqueous solution of the aqueous solution of configuration potassium permanganate, the aqueous solution of water glass, chitosan, the aqueous solution combination of PAM, and (concentration of potassium permanganate in mixed aqueous solution B is 4g/L to add abundant stirring acquisition such as red soil, flyash, red mud and clay mixed aqueous solution B, water glass, chitosan, the concentration of PAM in mixed aqueous solution B are 1g/L, and red soil, flyash, red mud and the clay concentration in mixed aqueous solution B is 50g/L).Mixed liquor A is mixed also abundant the stirring to be prepared and got with mixed liquid B in 3 hours.The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 4:2:1.

Embodiment 13

Multicomponent composite flocculating setting agent preparation: aluminum chloride, PAFS, potassium permanganate, polyacrylamide are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 400g/L in the water, iron salt concentration is 5g/L, potassium permanganate concentration is 0.5g/L, and concentration of polyacrylamide is 2g/L.

Being applied to arsenic-polluted river purifies: arsenic concentration is 0.5mg/L in the arsenic polluted water body.Administer according to following steps:

(1) suffers the current downstream of arsenic contamination at mobile, utilize the interception dam that the current interception is lived to let out under the current of avoiding being subjected to arsenic contamination; In the water of interception front, dam, pontoon pump or siphon pipe are set;

(2) will tackle current that the upstream, dam is not subjected to arsenic contamination and the Zhi Liushui that may import these current that are subjected to arsenic contamination and stop, and avoid the water in tributary to enter in the water that suffers arsenic contamination with the interception dam;

(3) by the upstream of the water that suffers arsenic contamination of the described interception of step (1) dam interception, the length that is provided for adding multicomponent composite flocculating setting agent is the same with the width of water stream channel has the porous pipe; The distance that adds between the described interception of multicomponent composite flocculating setting agent place and step (1) dam is 2:1 for the ratio scope of the useful capacity of water stream channel between the two and the volume of handling the water yield every day; At the 10m place, rear that adds the multicomponent composite flocculating setting agent place aerating apparatus or whipping appts are set all;

(4) the even spraying step (3) setting of multicomponent composite flocculating setting agent added on the water surface that has the described interception Ba Chu to step (1) of porous pipe place of multicomponent composite flocculating setting agent.Form in processed water in the multicomponent composite flocculating setting agent obtain that the total concn of ferro element and aluminium element is 400mg/L in the aluminum chloride and PAFS, the mol ratio of the aluminium element in ferro element in the PAFS and aluminum chloride and the PAFS is 1.25%:1; Potassium permanganate be in aluminum chloride and the PAFS ferro element and aluminium element gross weight 0.12%; Concentration of polyacrylamide be in aluminum chloride, the PAFS ferro element and aluminium element gross weight 0.48%.Added behind the multicomponent composite flocculating setting agent quiescent setting 72 hours, handle in this waters arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Let out to the downstream under the upper water overflow of the water after utilizing pontoon pump or siphon pipe with the above-mentioned arsenic removal that obtains then, be provided with upstream, the place ahead arsenic-containing water that has porous pipe place add multicomponent composite flocculating setting agent this moment, under action of gravity, flow through add multicomponent composite flocculating setting agent have a porous pipe place; Flow through when this has the porous pipe at arsenic-containing water, multicomponent composite flocculating setting agent adds in the water body that enters continuous flow through having the porous pipe, and stir the arsenic removal of carrying out water body under the situation of water body at whipping appts, realization contains the continuous processing of arsenic current water, until the arsenic-containing water body between step (1) described interception dam and the described interception of step (2) dam is disposed.Wherein, the composition and the content that form the multicomponent composite flocculating setting agent that obtains in processed water are same as above, and the throwing amount is 200mg/L.

The mobile water body that adopts aforesaid method to carry out arsenic contamination is handled, in the water after the processing arsenic concentration can satisfy or be better than three class water bodys in the national water environment quality standard to the specified requirement of arsenic concentration (<0.05mg/L).

Embodiment 14

Multicomponent composite flocculating setting agent preparation: aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate, iron trichloride, potassium permanganate, polyacrylamide are joined simultaneously abundant stirring and dissolving in the dissolving tank that water is housed, make that the aluminium salt concn is 400g/L in the water, iron salt concentration is 40g/L, potassium permanganate concentration is 44g/L, and concentration of polyacrylamide is 4.4g/L.

Being applied to arsenic-polluted river purifies: arsenic concentration is 1.50mg/L in the arsenic polluted water body.Administer according to following steps:

(1) suffers the current downstream of arsenic contamination at mobile, utilize the interception dam that the current interception is lived to let out under the current of avoiding being subjected to arsenic contamination; In the water of interception front, dam, pontoon pump or siphon pipe are set;

(2) will tackle current that the upstream, dam is not subjected to arsenic contamination and the Zhi Liushui that may import these current that are subjected to arsenic contamination and stop, and avoid not being subjected to the current of arsenic contamination to enter in the water that suffers arsenic contamination with the interception dam;

(3) by the upstream of the water that suffers arsenic contamination of the described interception of step (1) dam interception, the length that is provided for adding multiple element composite metal oxidate arsenic removal settling agent is the same with the width of water stream channel has the porous pipe; In the downstream that adds the multiple element composite metal oxidate arsenic removal settling agent place, the length that is provided for adding multicomponent composite flocculating setting agent is the same with the width of water stream channel has the porous pipe; And the distance that adds the multiple element composite metal oxidate arsenic removal settling agent place and add between the multicomponent composite flocculating setting agent place is 1:1 for the ratio of the available water capacity of the water stream channel between the two and the volume of handling the water yield every day; The distance that adds between the described interception of multicomponent composite flocculating setting agent place and step (1) dam is 1:1 for the ratio of the available water capacity of water stream channel between the two and the volume of handling the water yield every day; At 0.5m place, rear that adds the multiple element composite metal oxidate arsenic removal settling agent place and the 0.5m place, rear that adds the multicomponent composite flocculating setting agent place aerating apparatus is set;

(4) the even spraying step (3) setting of multiple element composite metal oxidate arsenic removal settling agent added on the water surface that has the described interception Ba Chu to step (1) of porous pipe place of multiple element composite metal oxidate arsenic removal settling agent, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 100mg/L, arrest reaction precipitation 2 hours.Afterwards, the even spraying of multicomponent composite flocculating setting agent is deposited on the water surface, form in processed water in the multicomponent composite flocculating setting agent obtain that the total concn of ferro element and aluminium element is 100mg/L in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the iron trichloride, the mol ratio of the aluminium element in ferro element in bodied ferric sulfate and the iron trichloride and aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150 and the aluminum nitrate is 0.1:1; Potassium permanganate concentration be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the iron trichloride ferro element and aluminium element gross weight 10%, concentration of polyacrylamide be in aluminum chloride, alum, polyaluminium sulfate, polymerize aluminum chloride, Tai-Ace S 150, aluminum nitrate, bodied ferric sulfate and the iron trichloride ferro element and aluminium element gross weight 1%.Added behind the multicomponent composite flocculating setting agent quiescent setting 24 hours, handle in this waters arsenic concentration in the water of back reach national water environment quality standard three class water bodys to the requirement of arsenic concentration (<0.05mg/L).

Let out to the downstream under the upper water overflow of the water after utilizing pontoon pump or siphon pipe with the above-mentioned arsenic removal that obtains then, upstream, the place ahead arsenic-containing water that has porous pipe place that adds multiple element composite metal oxidate arsenic removal settling agent is set this moment, under action of gravity, flow through in turn add multiple element composite metal oxidate arsenic removal settling agent have a porous pipe place, and flow through add multicomponent composite flocculating setting agent have a porous pipe place; Flow through when two places have the porous pipe at arsenic-containing water, multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent add in the water body that enters continuous flow through the porous pipe that has separately, and stir the arsenic removal of carrying out water body under the situation of water body at aerating apparatus, realization contains the continuous processing of arsenic current water, until the arsenic-containing water body between step (1) described interception dam and the described interception of step (2) dam is disposed; Wherein, the throwing amount of multiple element composite metal oxidate arsenic removal settling agent in water is 50mg/L, and the throwing amount of multicomponent composite flocculating setting agent in water is 100mg/L, and the composition and the content that form the multicomponent composite flocculating setting agent that obtains in processed water are same as above.

The mobile water body that adopts aforesaid method to carry out arsenic contamination is handled, in the water after the processing arsenic concentration can satisfy or be better than three class water bodys in the national water environment quality standard to the specified requirement of arsenic concentration (<0.05mg/L).

Described multiple element composite metal oxidate arsenic removal settling agent mixes stirring reaction preparation in 30 minutes by the aqueous solution of the aqueous solution of the aqueous solution of the aqueous solution of iron trichloride, aluminum chloride, ferrous sulfate, calcium chloride, mixed aqueous solution (iron trichloride, aluminum chloride, the ferrous sulfate concentration in mixed aqueous solution is 4g/L, and calcium chloride is 1g/L with the concentration of magnesium chloride in mixed aqueous solution) that magnesium chloride solution is formed and gets with potassium permanganate solution (concentration of permanganate water solution is 2g/L).The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide etc., and wherein: ferro element: manganese element: the mol ratio of aluminium element is 3:1:2.

Claims (10)

1. a multicomponent composite flocculating setting agent carries out composite obtaining by molysite, aluminium salt, permanganate and polyacrylamide and the aqueous solution; It is characterized in that: multicomponent composite flocculating setting agent in processed water molysite and the total concn scope of aluminium salt be between 2~400mg/L, the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between.
2. multicomponent composite flocculating setting agent according to claim 1 is characterized in that: also contain in the described multicomponent composite flocculating setting agent with the mass ratio of aluminium salt or molysite be at least a in the group formed of water glass, sodium polysilicate, sodium phosphate, sodium polyphosphate, sodium alginate, chitosan, starch, the cellulose acetate of 0~0.2:1.
3. multicomponent composite flocculating setting agent according to claim 1 and 2 is characterized in that: described molysite is selected from least a in the group that iron(ic) chloride, ferric sulfate, iron nitrate, poly-ferric chloride, bodied ferric sulfate, polymerization iron nitrate, PAFS forms;
Described aluminium salt is selected from least a in the group that Tai-Ace S 150, aluminum chloride, polyaluminium sulfate, polymerize aluminum chloride, aluminum nitrate, polymerization aluminum nitrate, alum, PAFS forms.
4. multicomponent composite flocculating setting agent according to claim 1 is characterized in that: described permanganate is potassium permanganate, sodium permanganate or their mixture.
5. application according to any described multicomponent composite flocculating setting agent of claim 1~4 is characterized in that: described multicomponent composite flocculating setting agent can be applied to by in the water body treating of arsenic contamination, removes by the arsenic in the arsenic polluted water body.
6. application according to any described multicomponent composite flocculating setting agent of claim 1~4, it is characterized in that: described multicomponent composite flocculating setting agent can be administered in not mobile or mobile arsenic polluted water body with the multiple element composite metal oxidate arsenic removal settling agent combined utilization, removes by the arsenic in the arsenic polluted water body.
7. the application of multicomponent composite flocculating setting agent according to claim 6 is characterized in that: when described multicomponent composite flocculating setting agent and multiple element composite metal oxidate arsenic removal settling agent combined utilization are administered in immobilising arsenic polluted water body:
Multiple element composite metal oxidate arsenic removal settling agent is evenly sprayed on the water surface of arsenic polluted water body, after the standing and reacting precipitation 2~72 hours, multicomponent composite flocculating setting agent is evenly sprayed on the water surface of arsenic polluted water body, and staticly settled 24~72 hours, obtain the water after the arsenic removal; Wherein, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is between 1~125mg/L, and the throwing weight range of multicomponent composite flocculating setting agent in water is between 2~500mg/L; Or
Earlier multiple element composite metal oxidate arsenic removal settling agent is joined in the arsenic polluted water body stir afterreaction 0~48 hour of thorough mixing; Add multicomponent composite flocculating setting agent afterwards, thorough mixing evenly stirred 1~15 minute once more, and quiescent settling 2~72 hours obtains the water after the arsenic removal; Wherein, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is between 1~125mg/L, and the throwing weight range of multicomponent composite flocculating setting agent in water is between 2~500mg/L;
Multicomponent composite flocculating setting agent in processed water molysite and the total concn scope of aluminium salt be between 2~400mg/L, the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between.
8. the application of multicomponent composite flocculating setting agent according to claim 6 is characterized in that: when described multicomponent composite flocculating setting agent and multiple element composite metal oxidate arsenic removal settling agent combined utilization are administered in the mobile arsenic polluted water body:
(1) suffers the current downstream of arsenic contamination at mobile, utilize the interception dam that the current interception is lived to let out under the current of avoiding being subjected to arsenic contamination; In the water of interception front, dam, pontoon pump or siphon pipe are set;
(2) will tackle current that the upstream, dam is not subjected to arsenic contamination and the Zhi Liushui that may import these current that are subjected to arsenic contamination and stop, and avoid not being subjected to the current of arsenic contamination to enter in the water that suffers arsenic contamination with the interception dam;
(3) by the upstream of the water that suffers arsenic contamination of the described interception of step (1) dam interception, the length that is provided for adding multiple element composite metal oxidate arsenic removal settling agent is the same with the width of water stream channel has the porous pipe; In the downstream that adds the multiple element composite metal oxidate arsenic removal settling agent place, the length that is provided for adding multicomponent composite flocculating setting agent is the same with the width of water stream channel has the porous pipe; And the distance that adds the multiple element composite metal oxidate arsenic removal settling agent place and add between the multicomponent composite flocculating setting agent place is between 0:1~4:1 for the ratio scope of the available water capacity of the water stream channel between the two and the volume of handling the water yield every day; The distance that adds between the described interception of multicomponent composite flocculating setting agent place and step (1) dam is between 1:10~10:1 for the ratio scope of the available water capacity of water stream channel between the two and the volume of handling the water yield every day; At 0.5~10 meter, the rear that adds the multiple element composite metal oxidate arsenic removal settling agent place and/or 0.5~10 meter, rear that adds the multicomponent composite flocculating setting agent place aerating apparatus or whipping appts are set;
(4) the even spraying step (3) setting of multiple element composite metal oxidate arsenic removal settling agent added on the water surface that has the described interception Ba Chu to step (1) of porous pipe place of multiple element composite metal oxidate arsenic removal settling agent, after the arrest reaction precipitation 2~72 hours, and then on this water surface, evenly spray multicomponent composite flocculating setting agent, and quiescent setting 24~72 hours, the water after this waters obtains arsenic removal; Wherein, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is between 1~125mg/L, and the throwing weight range of multicomponent composite flocculating setting agent in water is between 2~500mg/L;
Multicomponent composite flocculating setting agent in processed water molysite and the total concn scope of aluminium salt be between 2~400mg/L, the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between;
Let out to the downstream under the upper water overflow of the water after utilizing pontoon pump or siphon pipe with the above-mentioned arsenic removal that obtains then, add upstream, the place ahead arsenic-containing water that has porous pipe place of multiple element composite metal oxidate arsenic removal settling agent in setting, flow through in turn add multiple element composite metal oxidate arsenic removal settling agent have a porous pipe place, and flow through add multicomponent composite flocculating setting agent have porous pipe place the time, multiple element composite metal oxidate arsenic removal settling agent and multicomponent composite flocculating setting agent add in the water body that enters continuous flow through the porous pipe that has separately, and stir the arsenic removal of carrying out water body under the situation of water body at aerating apparatus or whipping appts, realization contains the continuous processing of arsenic current water, until the arsenic-containing water body between step (1) described interception dam and the described interception of step (2) dam is disposed; Wherein, the throwing weight range of multiple element composite metal oxidate arsenic removal settling agent in water is between 1~125mg/L, and the throwing weight range of multicomponent composite flocculating setting agent in water is between 2~500mg/L;
Multicomponent composite flocculating setting agent in processed water molysite and the total concn scope of aluminium salt be between 2~400mg/L, the molar ratio range of molysite and aluminium salt is between 0.01~20:1; Permanganate be molysite and aluminium salt gross weight 0.025%~80% between; Polyacrylamide be molysite and aluminium salt gross weight 0~40% between.
9. according to the application of claim 6,7 or 8 described multicomponent composite flocculating setting agents, it is characterized in that: described multiple element composite metal oxidate arsenic removal settling agent is to be prepared from through chemical reaction by iron salt solutions, aluminum salt solution, ferrous salt solution, manganese salt solution, permanganate solution; The composite component of multiple element composite metal oxidate arsenic removal settling agent comprises ferric hydrous oxide, hydronium(ion) oxidation iron, hydration hydroxyl hydrogen ferric oxide, hydrated aluminum oxide compound, hydration aluminum oxyhydroxide, W 4600, hydrated manganese oxide compound and hydration hydroxyl hydrogen manganese oxide; Iron, manganese, the aluminium element molar ratio range between the two arbitrarily are 6:1~1:6.
10. the application of multicomponent composite flocculating setting agent according to claim 9 is characterized in that: contain mass ratio with aluminium salt, molysite or manganese salt and be at least a in the group that 0~0.1: 1 water glass, sodium polysilicate, sodium polyphosphate, sodium alginate, chitosan, starch, polyacrylamide form in multiple element composite metal oxidate arsenic removal settling agent; Or
Contain mass ratio with aluminium salt, molysite or manganese salt and be at least a in the group that diatomite, kaolin, red soil, flyash, red mud, the clay of grain diameter below 100 orders of 0~2000:1 form; Or
Contain with the mass ratio of aluminium salt, molysite or manganese salt be at least a in the group formed of water glass, sodium polysilicate, sodium polyphosphate, sodium alginate, chitosan, starch, the polyacrylamide of 0~0.1:1, with the mass ratio that contains aluminium salt, molysite or manganese salt be at least a at least a group of forming in the group formed of diatomite, kaolin, red soil, flyash, red mud, the clay of grain diameter below 100 orders of 0~2000:1.
CN2009100805955A 2009-03-23 2009-03-23 Multicomponent composite flocculating setting agent and use in arsenic contamination water treatment CN101503239B (en)

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