CN1274403C - Method for preparing active filtering absorbent material and method for intensify water treatment thereby - Google Patents
Method for preparing active filtering absorbent material and method for intensify water treatment thereby Download PDFInfo
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- CN1274403C CN1274403C CN 200410044019 CN200410044019A CN1274403C CN 1274403 C CN1274403 C CN 1274403C CN 200410044019 CN200410044019 CN 200410044019 CN 200410044019 A CN200410044019 A CN 200410044019A CN 1274403 C CN1274403 C CN 1274403C
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- water
- sorbing material
- filter film
- activated filter
- absorbent material
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a method for preparing active filtering absorbent material and a method for intensifying water processing, particularly to a method for preparing active filtering absorbent material by sludge generated from a biochemical sewage processing technique and a method for intensifying water processing by active filtering absorbent material. The active filtering absorbent material is prepared by the processes that solid-liquid separation objects formed after biochemical processing of domestic sewage are used for separating sludge and water through precipitating; the sludge generated from a precipitation tank is dewatered, and an additive agent is added; sludge filtration absorbing material is obtained through baking, warming and grinding. The present invention has the water processing intensifying method that raw water enters a mixing tank, a reaction tank, a filter tank and a disinfection tank; a chemical agent is added in the mixing tank; the filtering material in the filter tank is chemical activated filtration absorbing material. The present invention has the advantages that the soluble rate of sludge adsorbent hydrochloric acid is about 0.25%, the soluble rate of NaOH is about 1.05%, the turbidity removal rate of filtered effluent water is increased by 10 to 50 %, and the removal rate of organic pollutant is increased by 10 to 40 %.
Description
Technical field:
The present invention relates to a kind ofly utilize the mud that produces in the sewage biochemical processing process to prepare the method for activated filter film sorbing material and utilize this activated filter film sorbing material to carry out the technology that fortified water is handled.
Background technology:
The present municipal water of China is handled the treatment process that generally adopts: the multistage barrier technological process of coagulation → precipitation → filtration → sterilization, wherein, coagulation and filtration are the key links that ensures water quality.Studies show that, in the filtering technique link, organic increase causes the filtrate in the filter tank to be subjected to organic pollution in the water, absorption and crown_interception have been lost to colloidal impurity, the crucial barrier action that causes filtering as in the technology greatly weakens, make turbidity, organic matter does not obtain effectively catching in filter process, in follow-up disinfecting process, more DBPs have been produced, in clear water reserviors and pipe network, can produce more deposition, corrosion, the secondary pollution problems of smelling flavor and being caused by the viral micro-organisms breeding, these all cause extremely bad influence to human health.One of key issue that influences filter effect is the material and the performance of filtrate.Filtrates such as present widely used quartz sand exist problems such as specific area is little, porosity is low, surperficial adsorption capacity is low.Because the quartz sand filter media surface is electronegative, and impurity and organic matter surface are generally all electronegative in the water, and electrically repelling each other makes retaining power be very limited, and exists under the more condition at organic matter, this situation is more obvious simultaneously.
Summary of the invention:
The method that the purpose of this invention is to provide a kind of preparation method of activated filter film sorbing material and utilize its fortified water to handle, the adsorbent that this method obtains not only has the advantage that specific area is big, porosity is big, adsorption capacity is high, the advantage that also have the mechanical strength height, regenerate easily, cost is low.Of the present invention to utilize mud to prepare filtering adsorbing material be to obtain like this: a, sanitary sewage carry out mud-water separation through the Separation of Solid and Liquid thing that forms after the biochemical treatment by precipitation; B dewaters to the mud that obtains in the sedimentation basin, adds the additive account for gross mass 0.1～40%, and 100～130 ℃ of oven dry down, described additive is one or more the mixture in kaolin, waterglass, the polyamino resin; C, progressively be warming up to 400～1200 ℃ with 1～20 ℃/min speed subsequently, and be incubated 30～180min with this understanding, pulverize into the particulate of 0.1～5mm then, obtain the activated filter film sorbing material.The technology of utilizing this activated filter film sorbing material to carry out the fortified water processing is achieved in that (one) former water enters into mixing pit, in mixing pit, add chemical agent, (2) former water with react through reaction tank after chemical agent mixes, then the precipitation that produces in the reaction tank is carried out mud-water separation by sedimentation basin; (3) the sedimentation basin water outlet is filtered, is sterilized through filtering ponds, the sterilization pool that filtrate is housed successively, obtain qualified water outlet, the core of this method is that the filtrate in the described filtering ponds is the activated filter film sorbing material, and wherein the activated filter film sorbing material is prepared according to following step: a, sanitary sewage carry out mud-water separation through the Separation of Solid and Liquid thing that forms after the biochemical treatment by precipitation; B dewaters to the mud that obtains in the sedimentation basin, adds the additive account for gross mass 0.1～40%, and 100～130 ℃ of oven dry down, described additive is one or more the mixture in kaolin, waterglass, the polyamino resin; C, progressively be warming up to 400～1200 ℃ with 1～20 ℃/min speed subsequently, and be incubated 30～180min with this understanding, pulverize into the particulate of 0.1～5mm then.The tradition biochemical process is handled in the sanitary sewage technology and is contained a large amount of organic matter (more than 60～80%) and a spot of metal salt compound in its mud, organic matter is converted into and has the very active carbon of high-specific surface area and flourishing microcellular structure in the high temperature sintering process, a spot of metal salt compound, with molysite and aluminium salt is example, and the compound of iron changes major part and is converted into Fe
2O
3, the compound major part of aluminium is converted into active Al
2O
3, forming the big surface of adsorption activity number of spots can very high adsorbent, has excellent physical absorption and chemisorption.The surface area of sludge filtration sorbing material of the present invention and micropore area are respectively 40～300m
2/ g and 50～171m
2/ g, grain density is 1.4～2.6g/cm
3About, porosity is about 65%, abrasion of particles rate about 0.30%, the hydrochloric acid soluble rate is about 0.25%, the NaOH soluble rate is about 1.05%, have very good adsorption and remove the organic pollution performance, this invention not only make mud locate be equipped with a new way, and make the resource of mud obtain extraordinary utilization.In the municipal water treatment process, select for use filtering adsorbing material that mud makes as filtrate, filter back delivery turbidity clearance improves 10%～40%, the organic pollutant removal rate improves 10%～40%, and consuming amount of concrete saves 10～30%, and haloform antecedent and haloform growing amount reduce significantly.
The specific embodiment:
The specific embodiment one: the activated filter film sorbing material of present embodiment is to obtain like this: a, sanitary sewage carry out mud-water separation through the Separation of Solid and Liquid thing that forms after the biochemical treatment by precipitation; B dewaters to the mud that obtains in the sedimentation basin, adds the additive that accounts for gross mass 0.1～40%, 100～130 ℃ of oven dry down; C, the different polluted waters of using according to material progressively are warming up to 400～1200 ℃ with 1～20 ℃/min speed, and are incubated 30～180min with this understanding, pulverize into the particulate of 0.1～5mm then, obtain the activated filter film sorbing material.Described additive is one or more the mixture in kaolin, waterglass, the polyamino resin.
The specific embodiment two: present embodiment is to utilize this activated filter film sorbing material to carry out fortified water like this to handle: (one) former water enters into mixing pit, in mixing pit, add chemical agent, (2) former water with react through reaction tank after chemical agent mixes, then the precipitation that produces in the reaction tank is carried out mud-water separation by sedimentation basin; (3) the sedimentation basin water outlet is filtered, is sterilized through filtering ponds, sterilization pool successively, obtains qualified water outlet, and the core of this method is that the filtrate in the described filtering ponds is the activated filter film sorbing material.The dosage of described chemical agent is 1～100mg/L (in a slaine).Described chemical agent is molysite or aluminium salt, as FeCl
3, Fe
2(SO
4)
3, bodied ferric sulfate, AlCl
3, Al
2(SO
4)
3, aluminium polychloride etc.
The specific embodiment three: what present embodiment and the specific embodiment two were different is also to have added 0～5mg/L oxidant before adding chemical agent.Other technical process are identical with the specific embodiment two.Described oxidant is one or more the mixture in ozone, ferrate, permanganate, chlorine, the chlorine dioxide.
The specific embodiment four: present embodiment is an example with former water body 3 classes, and the activated filter film sorbing material that utilizes the mud separated in the sewage biochemical processing process to make is handled micro-polluted water.In mixing pit, add 1～100mg/l iron chloride (with Fe
3+Meter), adopt the activated filter film sorbing material of separating in traditional biochemical process processing sanitary sewage technology as filtrate in the filtering technique link, filter back delivery turbidity clearance improves 10%～20%, the organic pollutant removal rate improves 10%～30%, consuming amount of concrete saves 10～15%, and haloform antecedent and haloform growing amount reduce significantly.
The specific embodiment five: present embodiment is an example with former water body 4 classes, and the activated filter film sorbing material that utilizes the mud separated in the sewage biochemical processing process to make is handled micro-polluted water.In mixing pit, add 2～4mg/L ferrate earlier, and then add 1～100mg/l Al
2(SO
4)
3(with Al
3+Meter), adopt the activated filter film sorbing material of separating in traditional biochemical process processing sanitary sewage technology as filtrate in the filtering technique link, filter back delivery turbidity clearance improves 10%～20%, the organic pollutant removal rate improves 10%～40%, consuming amount of concrete saves 10～20%, and haloform antecedent and haloform growing amount reduce significantly.
Claims (4)
1, the preparation method of activated filter film sorbing material is characterized in that it is prepared according to following step: a, sanitary sewage carry out mud-water separation through the Separation of Solid and Liquid thing that forms after the biochemical treatment by precipitation; B dewaters to the mud that obtains in the sedimentation basin, adds the additive account for gross mass 0.1～40%, and 100～130 ℃ of oven dry down, described additive is one or more the mixture in kaolin, waterglass, the polyamino resin; C, progressively be warming up to 400～1200 ℃ with 1～20 ℃/min speed subsequently, and be incubated 30～180min with this understanding, pulverize into the particulate of 0.1～5mm then, obtain the activated filter film sorbing material.
2, the method for utilizing activated filter film sorbing material fortified water to handle, it is handled according to following step: (one) former water enters into mixing pit, in mixing pit, add chemical agent, (2) former water with react through reaction tank after chemical agent mixes, then the precipitation that produces in the reaction tank is carried out mud-water separation by sedimentation basin; (3) the sedimentation basin water outlet is filtered, is sterilized through filtering ponds, sterilization pool successively, obtain qualified water outlet, it is characterized in that the filtrate in the described filtering ponds is the activated filter film sorbing material, wherein the activated filter film sorbing material is prepared according to following step: a, sanitary sewage carry out mud-water separation through the Separation of Solid and Liquid thing that forms after the biochemical treatment by precipitation; B dewaters to the mud that obtains in the sedimentation basin, adds the additive account for gross mass 0.1～40%, and 100～130 ℃ of oven dry down, described additive is one or more the mixture in kaolin, waterglass, the polyamino resin; C, progressively be warming up to 400～1200 ℃ with 1～20 ℃/min speed subsequently, and be incubated 30～180min with this understanding, pulverize into the particulate of 0.1～5mm then.
3, the method for utilizing activated filter film sorbing material fortified water to handle according to claim 2, the dosage that it is characterized in that described chemical agent is 1～100mg/L.
4, according to claim 2 or the 3 described methods of utilizing activated filter film sorbing material fortified water to handle, it is characterized in that described chemical agent is molysite or aluminium salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410044019 CN1274403C (en) | 2004-11-08 | 2004-11-08 | Method for preparing active filtering absorbent material and method for intensify water treatment thereby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410044019 CN1274403C (en) | 2004-11-08 | 2004-11-08 | Method for preparing active filtering absorbent material and method for intensify water treatment thereby |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1631508A CN1631508A (en) | 2005-06-29 |
| CN1274403C true CN1274403C (en) | 2006-09-13 |
Family
ID=34845949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410044019 Expired - Fee Related CN1274403C (en) | 2004-11-08 | 2004-11-08 | Method for preparing active filtering absorbent material and method for intensify water treatment thereby |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1274403C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081345B (en) * | 2007-07-31 | 2010-06-16 | 奇迪电器集团有限公司 | Filter media and method for making same and filter element using said filter media |
| CN101537342B (en) * | 2009-03-23 | 2010-12-01 | 浙江大学 | Chemical modification method for preparing residual activated sludge to absorbent |
| CN103120925A (en) * | 2013-02-05 | 2013-05-29 | 西安建筑科技大学 | Preparation method of adsorbent |
| CN107512746B (en) * | 2017-09-14 | 2021-03-05 | 清远绿由环保科技有限公司 | Filtering agent produced by municipal sludge and used for treating sewage and preparation method thereof |
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2004
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| Publication number | Publication date |
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| CN1631508A (en) | 2005-06-29 |
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