CN1187467A - Improved compound flocculating agent - Google Patents
Improved compound flocculating agent Download PDFInfo
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- CN1187467A CN1187467A CN97107234A CN97107234A CN1187467A CN 1187467 A CN1187467 A CN 1187467A CN 97107234 A CN97107234 A CN 97107234A CN 97107234 A CN97107234 A CN 97107234A CN 1187467 A CN1187467 A CN 1187467A
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- CN
- China
- Prior art keywords
- aluminum chloride
- improved compound
- polymerize aluminum
- flocculation agent
- flocculating agent
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- 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.)
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Abstract
An improved compound coagulant for treating sewage and purifying water contains polymeric aluminium chloride (3-10%), high-molecular inorganoiron salt (0.5-1%) and sodium acrylate (0.1-1.5%). Besides the functions general coagulant has, it has settling and decolouring functions with wider adaptability to treat pH value and turbidity and better effect. The removal rate of COD, BOD and S is 1-3 times higher than existing coagulants. It also has better decolouring action to water-soluble pigment.
Description
The present invention relates to a kind of sewage disposal and water purification flocculation agent.
The flocculation agent that sewage disposal at present and water purification are used mainly contains high molecular aluminium salt and molysite, as aluminium chlorohydroxide, polymerize aluminum chloride, poly aluminum chloride compound, Tai-Ace S 150, polyaluminium sulfate, iron trichloride, bodied ferric sulfate, poly-ferric chloride or the like.They all are single inorganic polymer flocculation agent, though can bring into play certain water purification function separately, its common shortcoming is: these flocculation agent function singlenesses, and a kind of flocculation agent is general only to have certain treatment effect to a certain class sewage; Secondly higher just not ideal enough to COD, BOD as the above wastewater treatment efficiency of COD＞10000mg/l; Purification efficiency is low, have in addition the effect very little; And above-mentioned flocculation agent is also not ideal enough to the mineral dye decolorizing effect, pigment is removed have certain selectivity, make some pigment is showed treatment effect preferably, and just poor to other pigment treatment effects; These flocculation agent are less to the xylogen cohesion in the papermaking wastewater in addition, and it is undesirable therefore to handle the papermaking wastewater effect.Be exactly treatment effect poly aluminum chloride compound preferably, its use range is not wide yet, and relatively poor to the decolorizing effect of dye wastewater, more than high turbidity COD＞3000mg/l or the wastewater treatment efficiency of low turbidity COD＜100mg/l obviously reduce.
Chinese patent 90105462 and 94104505 discloses a kind of composite polymer flocculation agent.The former constitutes ferrous fundamental mode poly aluminium chloride silicic acid by three kinds of polymer-inorganic flocculation agent poly aluminium chlorides, poly-iron chloride, the ferrous complexing of polychlorostyreneization.The latter is a kind of based on inorganic polymer and the organic and inorganic compound flocculating agent compound composition of organic polymer coargulator, and it is made up of than pyrrolidone, an amount of discoloring agent with organic polyoxyethylene, polyethylene inorganic polymerize aluminum chloride (or polyaluminium sulfate), Calcium dichloride dihydrate, calcium hydroxide, Manganous chloride tetrahydrate (or manganous sulfate).
It is low to the object of the present invention is to provide another kind to have a cost, broad spectrum is good, has flocculation sediment, two kinds of effects of decolouring simultaneously, and to the coloring matter non-selectivity, good decolorizing effect all has the organic-inorganic composite flocculation agent of good treatment effect to high-concentration and low-concentration sewage and black liquid.
For achieving the above object, flocculation agent of the present invention is formed and is comprised that the polymerize aluminum chloride of 3-15% is (with Al
2O
3Meter), the polymer inorganic molysite (in iron) of 0.5-1%, the sodium acrylate of 0.1-1.5%.Polymerize aluminum chloride mainly plays cohesion in the flocculation agent of the present invention, and he can be a polymer chlorination aluminium salt, as aluminium chlorohydroxide and/or polymerize aluminum chloride and/or poly aluminum chloride compound, but wherein especially with poly aluminum chloride compound for well.The content of polymerize aluminum chloride is preferably 5-10% among the present invention.The main effect of polymer inorganic molysite is to quicken the precipitating action of aggregate and improve decolorizing effect in the flocculation agent of the present invention, best selective polymerization iron(ic) chloride of polymer molysite and/or bodied ferric sulfate, and inorganic molysite content is preferably 0.5-0.8%.For improving the coagulative precipitation effect, polymerize aluminum chloride of the present invention, polymer inorganic molysite preferably select molecular weight bigger.Sodium acrylate mainly plays a driving role in the present invention, and its adding has the synergy of promotion to polymerize aluminum chloride cohesion, and it is 1.5% just passable to it is generally acknowledged that add-on has, and raising content will increase cost, and preferable content is 0.3-0.8%.Can also add the material that some regulate PH in the flocculation agent of the present invention as required, make flocculation agent be acid, be used to handle the black liquid of alkalescence as adding sulfuric acid.
The preparation of flocculation agent of the present invention respectively polymerize aluminum chloride and polymer inorganic molysite are added the water hydrolysis, and sodium acrylate adds the water hydrolysis; Then two kinds of hydrolysate thorough mixing are evenly promptly got this product.Be to improve hydrolysis effect, polymerize aluminum chloride and polymer inorganic molysite add that the water hydrolysis is appropriate to the occasion suitably heats as 60-80 ℃ with the promotion hydrolysis.Product of the present invention can be made into aqua as required, also can be made into pulvis.
Description below in conjunction with several indefiniteness embodiment further specifies the present invention.
Embodiment 1: with Al
2O
3Content is that 30% poly aluminum chloride compound 200Kg and iron level are 20% poly-ferric chloride 100Kg, adds water and puts into reactor and heat about about 60 ℃ and be hydrolyzed; With content is that 30% sodium acrylate 40Kg adds the water hydrolysis; Then two kinds of hydrolysates are put into reactor to stir (water yield of adding is to complement to 1 ton) greater than 100 rev/mins of speed.
Embodiment 2: with Al
2O
3Content is that 28% polymerize aluminum chloride 300Kg and iron level are 45% bodied ferric sulfate 40Kg, adds water and puts into reactor and heat about about 60 ℃ and be hydrolyzed; With content is that 95% sodium acrylate 8Kg adds the water hydrolysis; Then two kinds of hydrolysates are put into reactor to stir (water yield of adding is to complement to 1 ton) greater than 100 rev/mins of speed.
Embodiment 3: with Al
2O
3Content is 28% aluminium chlorohydroxide 300Kg, Al
2O
3Content is that 30% poly aluminum chloride compound 200Kg and iron level are that 20% poly-ferric chloride 50Kg, iron level are 45% bodied ferric sulfate 40Kg, adds water and puts into reactor and heat about about 80 ℃ and be hydrolyzed; With content is that 30% sodium acrylate 10Kg adds the water hydrolysis; Then two kinds of hydrolysates are put into reactor to stir (water yield of adding is to complement to 1 ton) greater than 100 rev/mins of speed.
Flocculation agent of the present invention is owing to adopt polymerize aluminum chloride, polymer molysite and sodium acrylate promotor compound, make the each component effect obtain the synergy complementation, the more single flocculation agent of coagulative precipitation separating effect of flocculation agent improves greatly, except that having general flocculation agent function, also have the precipitation and the two kinds of functions of decolouring simultaneously, precipitation, good decolorizing effect, and to various water colo(u)rs, no matter be organic or inorganic, all performance has good decolorization.Especially to some extraordinary sewage as the papermaking wastewater (black liquid and yellow liquor), the dyeing and printing sewage that contains various paint pigments that contain xylogen, contain heavy metal salt sewage, and extra heavy concentration (sewage of COD＞10000mg/l) all has good decontamination effect improving, and has the adaptability of broad, treatment sewage PH, turbidity there are stronger adaptability and good treatment effect, COD, BOD, SS clearance are higher than existing various flocculation agent, exceed 1-3 doubly with the dosage treatment effect, help reducing cost of sewage disposal.It is the desirable flocculation agent of various industrial sewages, sanitary sewage and purifying drinking water.
Claims (7)
1, a kind of improved compound flocculating agent, the polymerize aluminum chloride that comprises 3-15% is (with A1
2O
3Meter, down together), the polymer inorganic molysite of 0.5-1% (in iron, down together), the sodium acrylate of 0.1-1.5%.
2,, it is characterized in that said polymerize aluminum chloride is aluminium chlorohydroxide and/or polymerize aluminum chloride and/or poly aluminum chloride compound according to the described improved compound flocculating agent of claim 1.
3,, it is characterized in that said polymerize aluminum chloride is a poly aluminum chloride compound according to the described improved compound flocculating agent of claim 2.
4,, it is characterized in that said polymer inorganic molysite is poly-ferric chloride and/or bodied ferric sulfate according to the described improved compound flocculating agent of claim 1.
5,, it is characterized in that said polymerize aluminum chloride content is 5-10% according to claim 1,2,3 or 4 described improved compound flocculating agents.
6,, it is characterized in that said polymer molysite content is 0.5-0.8% according to claim 1,2,3 or 4 described improved compound flocculating agents.
7,, it is characterized in that said sodium acrylate content is 0.3-0.8% according to claim 1,2,3 or 4 described improved compound flocculating agents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97107234A CN1187467A (en) | 1997-12-11 | 1997-12-11 | Improved compound flocculating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97107234A CN1187467A (en) | 1997-12-11 | 1997-12-11 | Improved compound flocculating agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1187467A true CN1187467A (en) | 1998-07-15 |
Family
ID=5169408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97107234A Pending CN1187467A (en) | 1997-12-11 | 1997-12-11 | Improved compound flocculating agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1187467A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510247C (en) * | 2007-07-13 | 2009-07-08 | 五原县大民财纸业有限责任公司 | Black liquor recovery agent for pulp making process |
| CN101891287A (en) * | 2010-07-07 | 2010-11-24 | 国家城市给水排水工程技术研究中心 | Composite dephosphorizing coagulant for secondary effluent of sewage treatment plant and treatment method |
| CN103508523A (en) * | 2012-06-19 | 2014-01-15 | 四川环能德美科技股份有限公司 | Water treatment composite flocculating agent and application thereof |
| CN105849051A (en) * | 2013-11-01 | 2016-08-10 | 荷兰联合利华有限公司 | Composition for purification of water |
-
1997
- 1997-12-11 CN CN97107234A patent/CN1187467A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510247C (en) * | 2007-07-13 | 2009-07-08 | 五原县大民财纸业有限责任公司 | Black liquor recovery agent for pulp making process |
| CN101891287A (en) * | 2010-07-07 | 2010-11-24 | 国家城市给水排水工程技术研究中心 | Composite dephosphorizing coagulant for secondary effluent of sewage treatment plant and treatment method |
| CN101891287B (en) * | 2010-07-07 | 2012-10-17 | 国家城市给水排水工程技术研究中心 | Composite dephosphorizing coagulant for secondary effluent of sewage treatment plant and treatment method |
| CN103508523A (en) * | 2012-06-19 | 2014-01-15 | 四川环能德美科技股份有限公司 | Water treatment composite flocculating agent and application thereof |
| CN105849051A (en) * | 2013-11-01 | 2016-08-10 | 荷兰联合利华有限公司 | Composition for purification of water |
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