CN106396199B - A kind of method of composite drug and sludge absorption material combination removal arsenic in waste water - Google Patents
A kind of method of composite drug and sludge absorption material combination removal arsenic in waste water Download PDFInfo
- Publication number
- CN106396199B CN106396199B CN201611110237.0A CN201611110237A CN106396199B CN 106396199 B CN106396199 B CN 106396199B CN 201611110237 A CN201611110237 A CN 201611110237A CN 106396199 B CN106396199 B CN 106396199B
- Authority
- CN
- China
- Prior art keywords
- arsenic
- waste water
- composite drug
- absorption material
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Dispersion Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The present invention provides a kind of method of composite drug and sludge absorption material combination removal arsenic in waste water, include the following steps: to add into waste water and be stirred after composite drug, adjust pH value, sludge absorption material is then added and is adsorbed, the arsenic in removal waste water；Wherein, the molar ratio of the composite drug and arsenic in waste water is 1-50:1.The method of composite drug of the present invention and sludge absorption material combination removal arsenic in waste water, raw materials are cheap, arsenic removal process process is simple, operation is economical, convenient for management, effect of removing arsenic is good, the concentration of arsenic in arsenic-containing waste water can be effectively reduced, Water jet cleaning is less than 0.1mg/L out, reaches discharge standard.
Description
Technical field
The invention belongs to water treatment fields, more particularly, to a kind of composite drug and sludge absorption material combination removal waste water
The method of middle arsenic.
Background technique
Arsenic is a kind of high poison element, can enter the devices such as human liver, kidney, bone, hair by food or skin contact
It is accumulated in official or tissue, destroys digestive system and nervous system, studied by the Center for Disease Control (CDC) and international cancer
The authoritative departments such as mechanism (IARC) are confirmed as first kind carcinogenic substance.Arsenic also has genetoxic, belongs to the World Health Organization (WHO)
Priority pollutants.Arsenic in water body is raw from nature geological activity (such as volcanic eruption, rocky erosion) and the mankind
Production activity (exploitation, smelting, the large-scale application of arsenic material, the exploitation of non-ferrous metal and smelting, the combustion of coal such as containing arsenide
Burn etc.).Wherein, the main reason for discharge of the Industrial " three Waste " containing arsenic, especially mining activities are water body arsenic pollutions.It is estimated that
There are about 120,000 tons of arsenic to be drained into water body every year in the whole world, so that the arsenic pollution in water body becomes a global problem.Currently, Australia
All there is arsenic poisoning event in the states such as big Leah, Canada, the U.S., Japan and Argentina, and arsenic pollution is also in recent years in China
Outburst situation is now concentrated, arsenic pollution event successively occurs on Guizhou, Hunan, Guangxi, Yunnan, Henan and Jiangsu and other places.Due to arsenic
It pollutes with high toxicity, high stability, be difficult to administer and there are the reasons such as irreversibility, many states to the destruction of ecological environment
Family and the World Health Organization have all formulated the content of arsenic in waste discharge stringent standard.It can be seen that arsenic pollution is seriously endangered
It is very urgent to develop efficient, practical waste water arsenic removal technology for evil human health and entire ecological environment.
Arsenic in waste water mainly has organo-arsenic and inorganic arsenic, and inorganic arsenic is mainly with Inorganic arsenates (As (V)) and arsenious acid
The form of salt (As (III)) exists, and it is the pass of waste water arsenic removal that wherein the toxicity of trivalent arsenic ion pair cell, which is much higher than pentavalent arsenic,
Key.
The reported arsenic removal technology of domestic and foreign literature has at present: the precipitation method, membrane processing method, absorption method, bioanalysis, ion are handed over
Change method, oxidizing process, extraction, electrocoagulation etc..The above various methods have a degree of removal to arsenic in water, but have
Respectively different applicable elements and advantage and disadvantage.Precipitation method arsenic removal mainly uses molysite or aluminium salt and As (V) that flocculation sedimentation occurs, should
Technology is more perfect, application it is relatively broad, but it handle after can generate a large amount of waste residues, cause secondary pollution.Membrane processing method master
It will be by acting on realization every filter (sieving), but the membrane aperture of independent microfiltration membranes is too big, and particle form can only be removed from water
Arsenic cannot retain deliquescent or colloid arsenic, usually combine with coagulation technology.Removal effect of the reverse osmosis and nanofiltration to arsenic
Preferably, but to equipment and operating technology height is required, operation and maintenance cost is higher, limits the popularization and application of high pressure membrane technology.
Bioanalysis mainly using microorganism or plant to the absorption of arsenic, accumulate or be converted and reduce arsenic concentration, but microorganism is to peripheral ring
The requirement in border is very stringent.Ion-exchange can reach 99% to the removal rate of arsenic, but be done by sulfate radical, chlorine and other anion
It disturbs, and regenerated liquid middle and high concentration arsenic is also an environmental problem.Electrocoagulation utilizes electrolytic process using aluminium or iron as electrode
Middle formation Al3+And Fe3+Coagulation, arsenic is transferred to solid phase from liquid phase, realizes and is separated by solid-liquid separation arsenic removal.But the technology electric energy
Consumption is big, and electrode is easy passivation.Extracting process is due to its own feature, and there is presently no the reports for industrial production wastewater arsenic removal
Road.Due to As (III) toxicity and mobility ratio As (V) by force, mainly exist in water with the arsenite of nonionic state, be one
Kind hydroaropic substance, above-mentioned most methods are poor to the removal effect of As in water (III), they are mainly used to As in water removal
(V).As (III) can be oxidized to As (V) by chemical oxidization method by oxidant, but can only realize arsenic valence when process exclusive use
The conversion of state cannot achieve the purpose that thorough arsenic removal.Therefore, usually first using oxidant that As (III) is pre- in arsenic removal process
It is oxidized to As (V), realizes removal by processes such as precipitating, absorption later.
Absorption method is the bigger serface provided using adsorbent, passes through affinity stronger between arsenic pollution object and adsorbent
Achieve the purpose that purify arsenic removal.In comparison, absorption method is simple and easy, and removal effect is good, and adsorbent material is from a wealth of sources, valence
Lattice are cheap, it has also become research hotspot.The active charcoal of common adsorbent, activated alumina etc..Though these materials are with higher
Adsorption capacity, but it is expensive, and service life is short, and this kind of material is mostly powdered, easily causes at sewage in treatment process
The problems such as managing system jams.In order to reduce cost, economizes on resources, achieve the purpose that the treatment of wastes with processes of wastes against one another, people are constantly to waste exhibition
Research is opened, new adsorbent is developed.Waterworks sludge is a kind of waste generated in water treatment procedure, is contained in such sludge
The hydroxide such as a large amount of iron, aluminium, and the oxides such as iron, aluminium have absorption and sedimentation function well to arsenic.It is with waterworks sludge
Raw material, the sheet being process through series of process such as granule, firings, powdered or granular adsorption material surface microporous structure
With very strong adsorption capacity, and iron, aluminum oxide are contained in adsorbent material surface, can be effectively in conjunction with arsenic.Using the dirt
The research of mud adsorbent material Adsorption arsenic in waste water is also rarely reported.It is better than As in view of adsorption capacity of the absorption method to As (V)
(III), adsorbent material can be used and oxidant applying is combined, As (III) is oxidized to As (V) first, is greatly improved sludge
Adsorption ability of the adsorbent material to arsenic.
Summary of the invention
In view of this, the present invention is directed to propose a kind of side of composite drug and sludge absorption material combination removal arsenic in waste water
Method combines Combined ferrate medicament as sludge absorption material prepared by raw material using purification plant sludge and removes arsenic in waste water jointly
A kind of economic, efficient method, this method reduce the expenses of waste water arsenic removal, realize the purpose of waste utilization.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of method of composite drug and sludge absorption material combination removal arsenic in waste water, includes the following steps: to waste water
In add composite drug after be stirred, adjust pH value after carry out hydrolysis, then be added sludge absorption material adsorbed,
Remove the arsenic in waste water；Wherein, the molar ratio of the composite drug and arsenic in waste water is 1-50:1.
Preferably, the molar ratio of the composite drug and arsenic in waste water is 1-10:1.
Further, the time of the whipping step is 5-120min；The pH value of the adjusting pH value step is 4-9；
The time of the adsorption step is 30-120min；The temperature of the adsorption step is 15-35 DEG C.
Preferably, the time of the whipping step is 10-60min；The pH value of the adjusting pH value step is 5-7；
The time of the adsorption step is 30-60min；The temperature of the adsorption step is 15-35 DEG C.
Further, the composite drug is made by the method included the following steps: under alkaline condition, to hypochlorite
Iron nitrate solution is added in solution, control reaction temperature is 50-65 DEG C, and reaction time 10-60min obtains Fe after reaction6+It is dense
Degree is the composite drug of 0.05-0.2mol/L；Wherein, the molar ratio of the effective chlorine in hypochlorite solutions and iron nitrate solution is
5-20:1.
Further, the concentration of effective chlorine is 0.8-1.5mol/L in the hypochlorite solutions；The hypochlorite
Solution is liquor natrii hypochloritis or calcium hypochlorite solution；The concentration of the iron nitrate solution is 0.14-0.32mol/L；It is described
Composite drug in Fe6+Concentration be 0.08-0.16mol/L.
Further, the sludge absorption material is made by the method included the following steps: using water treatment plant's iron content, aluminium
1:0.1-10 prepares slabbing, powdered or granular adsorbent material in parts by weight for sludge and clay, after natural air drying,
Dry 0.5-1h under the conditions of 105 DEG C, then 300 DEG C of preheating 10-30min, 900-1100 DEG C of roasting 10-40min form to get
The sludge absorption material.
Further, the proportion of water treatment plant's iron content, the sludge of aluminium and clay is 1:1-5.
Further, fire box temperature is at 500 DEG C or less in the calcination steps, temperature rate≤5 DEG C/min, burner hearth
When temperature is 500 DEG C or more, temperature rate≤10 DEG C/min.
Further, the particle size of the sludge absorption material is 0.001-5mm.
Arsenic in waste water of the present invention includes inorganic arsenic and organo-arsenic, and wherein inorganic arsenic includes trivalent arsenic and pentavalent
Arsenic.In reaction process, first using after Combined ferrate medicament (i.e. composite drug) oxidation reaction, pH value is adjusted, after hydrolysis
It enters back into using the further Adsorption arsenic of sludge absorption material in adsorption tank, the discharge of wastewater after adsorbing；It can also be by oxygen
Change reaction and adsorption reaction is placed in the same reaction tank and carries out.
Basic principle of the invention are as follows: using Combined ferrate medicament by waste water organo-arsenic and trivalent arsenic be oxidized to
Pentavalent arsenic, while the reduction product Fe of ferrate3+It is acted on As and generates precipitating, then further inhaled using sludge absorption material
The attached remaining pentavalent arsenic of removal, is finally reached the arsenic removal purpose of highly effective and safe.Ferrate redox potential with higher,
Be 2.2V under acid condition, be 0.72V under alkaline condition, thus can in water organo-arsenic or trivalent arsenic that oxidation occurs is anti-
It answers.The final product Fe of Combined ferrate medicament oxidation arsenic removal3+It can be formed and be precipitated with arsenate, and Fe3+Hydrolysate meeting
The hydrated complexes for forming various forms occur ligand exchange with the As (V) in solution, adsorb arsenic ion in water.Through compound
Arsenic-containing waste water after the oxidation of ferrate medicament enters adsorption tank, the sludge which is prepared with water treatment plant's iron content, aluminium sludge
Adsorbent material is adsorbent, the adsorbent have certain gap structure, surface contain the metal oxides such as a certain amount of iron, aluminium at
Point.Part iron, aluminum oxide are converted into iron, aluminium hydroxide through hydrolysis in aqueous solution, and iron, aluminium hydroxide are through being complexed
With the As (V) in solution ligand exchange occurs for effect, and the iron on mud adsorbent surface, aluminum oxide are also given birth in conjunction with arsenic
At M (H2AsO4)0、M(HAsO4)-、M(HAsO4)2-Equal substances (M represents Fe or Al), so that sludge absorption material has arsenic
Stronger suction-operated.
Adsorption step is completed in adsorption tank, and adsorbent material can be fixed bed, or fluidized bed.Reaction process
In, oxidation reaction and adsorption reaction can carry out in two ponds respectively, can also carry out in adsorption tank simultaneously.
Compared with the existing technology, the side of composite drug of the present invention and sludge absorption material combination removal arsenic in waste water
Method has the advantage that
The method of composite drug of the present invention and sludge absorption material combination removal arsenic in waste water, raw materials valence
Lattice are cheap, and arsenic removal process process is simple, operation is economical, convenient for management, effect of removing arsenic is good, can effectively reduce arsenic in arsenic-containing waste water
Concentration, out Water jet cleaning be less than 0.1mg/L, reach discharge standard.The present invention, which has organo-arsenic and inorganic arsenic, preferably to go
Except effect, and have the function of that waste resource recovery utilizes.
Detailed description of the invention
Fig. 1 is the flow chart of the method for composite drug and sludge absorption material combination removal arsenic in waste water.
Specific embodiment
In addition to being defined, technical term used in following embodiment has universal with those skilled in the art of the invention
The identical meanings of understanding.Test reagent used in following embodiment is unless otherwise specified conventional biochemical reagent；It is described
Experimental method is unless otherwise specified conventional method.
Below with reference to examples and drawings, the present invention will be described in detail.
Embodiment 1
As shown in Figure 1, a kind of method of composite drug and sludge absorption material combination removal arsenic in waste water, including walk as follows
It is rapid: sodium arsenite is added into water, is made into the arsenic-containing waste water that initial arsenic concentration is 10mg/L, waste water first passes through oxidation pond reaction,
Add composite drug into waste water, composite drug and arsenic mole are added than stirring 30min, then HCl solution is adjusted for 5:1
Hydrolysis is carried out after pH value to 6-7, water outlet enters adsorption tank, and sludge absorption material is then added and carries out absorption 60min, adsorbs
Pond is fixed bed, and water outlet arsenic concentration is 0.04mg/L, reaches discharge standard.
The composite drug is made from the method included the following steps: the hypochlorous acid for being 1.0mol/L to effective chlorine density
Sodium hydroxide solution is added in sodium solution, alkaline environment is prepared, adds the iron nitrate solution of 0.2mol/L, time
The molar ratio of effective chlorine and iron nitrate solution is 5:1 in solution of chlorate, and control reaction temperature is 60-65 DEG C, the reaction time
30min obtains Fe after reaction6+Concentration be 0.14mol/L composite drug.
The sludge absorption material is made by the method included the following steps: using water treatment plant's iron content, aluminium sludge with
1:2 prepares slabbing, powdered or granular adsorbent material to clay in parts by weight, after natural air drying, under the conditions of 105 DEG C
Dry 1h, then in 300 DEG C of preheating 20min, 1000 DEG C of roasting 20-30min moldings are to get the sludge absorption material.
Embodiment 2
A kind of method of composite drug and sludge absorption material combination removal arsenic in waste water, includes the following steps: Xiang Shuizhong
Sodium arsenite and natrium arsenicum is added, is made into the mixing arsenic waste water that initial arsenic concentration is 12mg/L, waste water first passes through oxidation pond reaction,
Add composite drug into waste water, composite drug and arsenic mole are added than stirring 20min for 4:1, be then added HCl or
H2SO4Solution adjusts pH value and is hydrolyzed reaction to 6, and water outlet enters adsorption tank, and then addition sludge absorption material is adsorbed
60min, adsorption tank are fluidized bed, and water outlet arsenic concentration is 0.05mg/L, are less than 0.1mg/L, reach discharge standard.
The composite drug is made from the method included the following steps: the hypochlorous acid for being 1.3mol/L to effective chlorine density
Potassium hydroxide solution is added in calcium solution, alkaline environment is prepared, effective chlorine and ferric nitrate are molten in the hypochlorite solutions
The molar ratio of liquid is 5.2:1, adds the iron nitrate solution of 0.25mol/L, and control reaction temperature is 60-65 DEG C, the reaction time
50min obtains Fe after reaction6+Concentration be 0.16mol/L composite drug.
The sludge absorption material is made by the method included the following steps: using water treatment plant's iron content, aluminium sludge with
1:4 prepares slabbing, powdered or granular adsorbent material to clay in parts by weight, after natural air drying, under the conditions of 105 DEG C
Dry 1h, then in 300 DEG C of preheating 30min, 1000 DEG C of roasting 20-30min moldings are to get the sludge absorption material.
Embodiment 3
A kind of method of composite drug and sludge absorption material combination removal arsenic in waste water, includes the following steps: Xiang Shuizhong
It is added monomethyl arsenic acid (MMA), is made into the mixing arsenic waste water that initial arsenic concentration is 5mg/L, waste water first passes through adsorption tank reaction (should
Adsorption tank is fluidized bed), add composite drug into waste water, composite drug and arsenic mole are added than stirring 40min for 5:1,
Then it adjusts pH value and reaction is hydrolyzed up to 6.5, water outlet enters adsorption tank, and sludge absorption material is then added and is adsorbed
60min, adsorption tank are fluidized bed, and water outlet arsenic concentration is 0.02mg/L, are less than 0.1mg/L, reach discharge standard.
The composite drug is made from the method included the following steps: the hypochlorous acid for being 1.1mol/L to effective chlorine density
Potassium hydroxide solution is added in sodium solution, alkaline environment is prepared, effective chlorine and ferric nitrate are molten in the hypochlorite solutions
The molar ratio of liquid is 6.1:1, adds the iron nitrate solution of 0.18mol/L, and control reaction temperature is 55-60 DEG C, the reaction time
50-60min obtains Fe after reaction6+Concentration be 0.11mol/L composite drug.
The sludge absorption material is made by the method included the following steps: using water treatment plant's iron content, aluminium sludge with
1:3 prepares slabbing, powdered or granular adsorbent material to clay in parts by weight, after natural air drying, under the conditions of 105 DEG C
Dry 1h, then in 300 DEG C of preheating 30min, 1000 DEG C of roasting 20-30min moldings are to get the sludge absorption material.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of method of composite drug and sludge absorption material combination removal arsenic in waste water, it is characterised in that: including walking as follows
It is rapid: to be stirred after adding composite drug into waste water, carry out hydrolysis after adjusting pH value, sludge absorption material is then added
It is adsorbed, removes the arsenic in waste water；Wherein, the molar ratio of the composite drug and arsenic in waste water is 1-50:1；
The sludge absorption material is made by the method included the following steps: using water treatment plant's iron content, the sludge and clay of aluminium
1:0.1-10 prepares slabbing, powdered or granular adsorbent material in parts by weight, after natural air drying, in 105 DEG C of conditions
Lower dry 0.5-1h, then in 300 DEG C of preheating 10-30min, 900-1100 DEG C of roasting 10-40min molding is to get the dirt
Mud adsorbent material；
The composite drug is made by the method included the following steps: under alkaline condition, being added into hypochlorite solutions
Iron nitrate solution, control reaction temperature are 50-65 DEG C, and reaction time 10-60min obtains Fe after reaction6+Concentration be 0.05-
The composite drug of 0.2 mol/L；Wherein, the molar ratio of the effective chlorine in hypochlorite solutions and iron nitrate solution is 5-20:1.
2. the method for composite drug according to claim 1 and sludge absorption material combination removal arsenic in waste water, feature
Be: the molar ratio of the composite drug and arsenic in waste water is 1-10:1.
3. the method for composite drug according to claim 1 or 2 and sludge absorption material combination removal arsenic in waste water, special
Sign is: the time of the whipping step is 5-120min；The pH value of the adjusting pH value step is 4-9；The suction
The time of attached step is 30-120min；The temperature of the adsorption step is 15-35 DEG C.
4. the method for composite drug according to claim 3 and sludge absorption material combination removal arsenic in waste water, feature
Be: the time of the whipping step is 10-60min；The pH value of the adjusting pH value step is 5-7；The absorption
The time of step is 30-60min；The temperature of the adsorption step is 15-35 DEG C.
5. the method for composite drug according to claim 1 and sludge absorption material combination removal arsenic in waste water, feature
Be: the concentration of effective chlorine is 0.8-1.5mol/L in the hypochlorite solutions；The hypochlorite solutions are time chlorine
Acid sodium solution or calcium hypochlorite solution；The concentration of the iron nitrate solution is 0.14-0.32 mol/L；The composite drug
Middle Fe6+Concentration be 0.08-0.16 mol/L.
6. the method for composite drug according to claim 1 and sludge absorption material combination removal arsenic in waste water, feature
Be: the proportion of the sludge of water treatment plant's iron content, aluminium and clay is 1:1-5.
7. the method for composite drug according to claim 1 and sludge absorption material combination removal arsenic in waste water, feature
Be: fire box temperature is at 500 DEG C or less in the calcination steps, temperature rate≤5 DEG C/min, fire box temperature 500
DEG C or more when, temperature rate≤10 DEG C/min.
8. the method for composite drug according to claim 1 and sludge absorption material combination removal arsenic in waste water, feature
Be: the particle size of the sludge absorption material is 0.001-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611110237.0A CN106396199B (en) | 2016-12-06 | 2016-12-06 | A kind of method of composite drug and sludge absorption material combination removal arsenic in waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611110237.0A CN106396199B (en) | 2016-12-06 | 2016-12-06 | A kind of method of composite drug and sludge absorption material combination removal arsenic in waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106396199A CN106396199A (en) | 2017-02-15 |
| CN106396199B true CN106396199B (en) | 2019-06-07 |
Family
ID=58084852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611110237.0A Active CN106396199B (en) | 2016-12-06 | 2016-12-06 | A kind of method of composite drug and sludge absorption material combination removal arsenic in waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106396199B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559354A (en) * | 2009-04-29 | 2009-10-21 | 同济大学 | Preparation method of sludge absorber and applications thereof |
| CN203922894U (en) * | 2014-05-30 | 2014-11-05 | 哈尔滨工程大学 | The device of arsenic in removal water is synchronizeed in a kind of oxidation with absorption |
| CN106007076A (en) * | 2016-07-04 | 2016-10-12 | 赣州有色冶金研究所 | Treatment method of arsenic-containing wastewater in tungsten smelting |
-
2016
- 2016-12-06 CN CN201611110237.0A patent/CN106396199B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559354A (en) * | 2009-04-29 | 2009-10-21 | 同济大学 | Preparation method of sludge absorber and applications thereof |
| CN203922894U (en) * | 2014-05-30 | 2014-11-05 | 哈尔滨工程大学 | The device of arsenic in removal water is synchronizeed in a kind of oxidation with absorption |
| CN106007076A (en) * | 2016-07-04 | 2016-10-12 | 赣州有色冶金研究所 | Treatment method of arsenic-containing wastewater in tungsten smelting |
Non-Patent Citations (3)
| Title |
|---|
| 不同粒径铁铝泥对砷(Ⅲ)的吸附效果;林璐等;《环境科学》;20120731;第34卷(第7期);2758-2765 |
| 次氯酸根对高铁酸盐溶液的稳定作用;贾汉东等;《无机盐工业》;20020930;第34卷(第5期);4，5，23 |
| 高铁酸钾处理含砷废水;蒋国民等;《过程工程学报》;20091231;第9卷(第6期);1109-1114 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106396199A (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Long et al. | A review of removal technology for antimony in aqueous solution | |
| CN105084591B (en) | One kind fluorination high fluoride wastewater treatment technique of work | |
| Kumar et al. | A critical review on lead removal from industrial wastewater: Recent advances and future outlook | |
| CN104276646B (en) | A kind of method rapidly and efficiently removing Heavy Metals in Waters | |
| CN102642951B (en) | Method combining oxidizing composite reagent and activated carbon to remove arsenic in water | |
| CN102336461A (en) | Method for removing metal ions from aqueous solution by use of hydrotalcite | |
| Singh et al. | A critical review on the research trends and emerging technologies for arsenic decontamination from water | |
| CN203112625U (en) | Emergency treatment system for sudden thallium pollution of raw water | |
| CN105126742B (en) | A kind of method using modified kaolin sorbent treatment fluoride waste | |
| CN101638253B (en) | Method for treating waste water polluted by composite chlorophenol with coordination of visible light-laccase | |
| CN104310672A (en) | Thallium-containing wastewater strongly oxidizing, coagulating, adsorbing and recovering process | |
| CN105060557A (en) | New method for simultaneously and efficiently removing thallium and arsenic from smelting wastewater | |
| CN107469834A (en) | A kind of ZnS/CuS nanometer sheets composite photo-catalyst preparation method | |
| CN107265788B (en) | A kind of industrial wastewater, exhaust treatment system | |
| CN103418338B (en) | Concave soil adsorption material carrying manganite and method for removing S2- in tannery wastewater | |
| CN103102026A (en) | Sudden raw water thallium pollution emergency treatment system and method | |
| CN105502757B (en) | A kind of industrial processing method of high-concentration arsenic-containing wastewater | |
| CN104645932B (en) | A kind of composite modified zeolite of iron and manganese oxides and preparation method and application | |
| CN109052543A (en) | A kind of method of noble silver in recycling waste water | |
| CN103523860B (en) | Method for removing harmful anions from aqueous solution by adopting Friedel salt or Kuzel salt | |
| CN106115931B (en) | The method that sponge iron cooperates with removing sulfate and Cd (II) waste water with microorganism | |
| CN106396199B (en) | A kind of method of composite drug and sludge absorption material combination removal arsenic in waste water | |
| CN112159025A (en) | Treatment method and application of hexavalent chromium-containing wastewater | |
| CN102188950B (en) | A kind of preparation method of alumina-based porous mineral material | |
| CN203922894U (en) | The device of arsenic in removal water is synchronizeed in a kind of oxidation with absorption |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |