CN104071881A - Flocculating agent for waste water treatment, and preparation method thereof - Google Patents
Flocculating agent for waste water treatment, and preparation method thereof Download PDFInfo
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- CN104071881A CN104071881A CN201410344084.0A CN201410344084A CN104071881A CN 104071881 A CN104071881 A CN 104071881A CN 201410344084 A CN201410344084 A CN 201410344084A CN 104071881 A CN104071881 A CN 104071881A
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Abstract
The invention discloses a flocculating agent for waste water treatment. The flocculating agent comprises components of calcium sulfate, aluminum ion salt, sodium carbonate, polyacrylamide, sodium thiosulfate, chitosan, chitosan quaternary ammonium salt, diatomite, cement and a pH adjusting agent, can be used for treating waste water discharged from food processing plants, metal manufacturing plants, chemical plants and the like, can also be used for treating waste water discharged from farms and slaughter plants, can also be used for purification of water quality in river channels and lakes, and can effectively reduce COD, color and turbidity of waste water.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to one for contaminated river course, water body in lake processing, flocculation agent of the high concentrated organic wastewater processing especially producing for industries such as cultivation, chemical industry, printing and dyeing, papermaking, plating and preparation method thereof.
Background technology
Along with the raising of people's living standard and the continuous expansion of suitability for industrialized production scale, the problem of environmental pollution is more and more serious, also increasing for the pressure of sewage disposal.
Traditional flocculation agent for sewage disposal according to chemical composition can be divided into inorganic flocculating agent and organic floculant two classes.Wherein, inorganic flocculating agent can be divided into again low molecule inorganic flocculating agent and polymer inorganic flocculating agent, and it is all mainly the carbonium cohesive force of utilizing aluminum ion or iron ion.Low molecule inorganic flocculating agent has the shortcoming that flocculation sediment speed is slow, amount of consumption of drugs is large, although having overcome its cost of shortcoming of low molecule inorganic flocculating agent existence, greatly improves polymer inorganic flocculating agent, and poor to low-temperature and low turbidity wastewater treatment efficiency.Organic floculant is taking organic polymer as host, price is higher, affected by pH value of sewage water larger, also needs to add reagent to regulate the pH value of sewage in practical application, therefore operation and equipment all need to increase, increased treatment process, must need the more treatment time, manpower and materials cost increases, and large amount of organic is left in draining meeting after treatment, be easy to form new pollution by oxidation, and large amount of organic discharge destroys natural microbial balance, affected the self-purification capacity of natural water.
Summary of the invention
Thereby object of the present invention is exactly to provide a kind of pollution substance that can condense the short period of time in sewage to make it to form closely, be difficult for returning the flocculation agent that molten flco precipitates, when making it precipitation, COD, heavy metal and the metalloid element in water can stripping not cause secondary pollution in water.
In order to realize object of the present invention, contriver provides following technical scheme.
For a flocculation agent for sewage disposal, composition comprises: calcium sulfate, aluminium salt, sodium carbonate, polyacrylamide, Sulfothiorine, chitosan, chitosan quaternary ammonium salt, diatomite, cement, pH adjusting agent.
The above-mentioned flocculation agent for sewage disposal, in weight part, composition comprises: calcium sulfate 20-30 part, aluminium salt 20-30 part, sodium carbonate 20-30 part, polyacrylamide 1-10 part, Sulfothiorine 1-10 part, chitosan 1-10 part, chitosan quaternary ammonium salt 1-10 part, diatomite 1-10 part, cement 1-10 part, pH adjusting agent 1-10 part.
The above-mentioned flocculation agent for sewage disposal, in weight part, composition comprises: 25 parts, calcium sulfate, 25 parts of aluminium salt, 25 parts, sodium carbonate, 5 parts of polyacrylamides, 5 parts, Sulfothiorine, 5 parts of chitosans, 5 parts of chitosan quaternary ammonium salts, 5 parts, diatomite, 5 parts of cement, 5 parts of pH adjusting agents.
The above-mentioned flocculation agent for sewage disposal, in weight part, composition comprises: 22 parts, calcium sulfate, 22 parts of aluminium salt, 22 parts, sodium carbonate, 3 parts of polyacrylamides, 3 parts, Sulfothiorine, 3 parts of chitosans, 3 parts of chitosan quaternary ammonium salts, 3 parts, diatomite, 3 parts of cement, 3 parts of pH adjusting agents.
The above-mentioned flocculation agent for sewage disposal, described aluminium salt is selected from one or more in potassium aluminium sulfate, Tai-Ace S 150, aluminum chloride.
The above-mentioned flocculation agent for sewage disposal, described pH adjusting agent is selected from citric acid, Tripotassium Citrate, lactic acid or tartrate.
The present invention also provides the preparation method of the above-mentioned flocculation agent for sewage disposal simultaneously.
For a preparation method for the flocculation agent of sewage disposal, be specially: take each component, mix.Preparation process is simple, easy to operate.
Flocculation agent for sewage disposal of the present invention, contained calcium sulfate, aluminium salt, sodium carbonate are main component, play throwing out; Polyacrylamide is coagulant aids, can impel the throwing out of main component to carry out fast; Sulfothiorine can improve the solubleness of calcium sulfate, makes its better performance throwing out; Chitosan is sequestrant; Chitosan quaternary ammonium salt is sequestrant, is also the sorbent material of COD; Diatomite and cement are the ratio heavy prescription that increases flocculation agent density.
Under the ratio of restriction condition, can in sewage treatment process, there is not scalding phenomenon in described aluminium salt.
After flocculation agent of the present invention joins in sewage, calcium sulfate dissolves hardly, itself play the effect of the flocculation nucleus of condensation, simultaneously, ionize micro-calcium ion out, the flocculating effect that sulfate ion can improve flocculation agent greatly, simultaneously the significantly potential difference of calcium sulfate and sodium carbonate is relative with the current potential of aluminium salt, by by alkali, acid or have the numerical value material of the current potential generation flocculating effect that conflicts each other of being separated by very far.Simultaneously, chitosan quaternary ammonium salt makes between solid particulate, to build bridge in sewage by grafting the dual function of utilizing a large amount of positive charges to neutralize or utilize macromolecular chain to cohere bridge formation, make the negative charge impurity cohesions such as colloid in solution de-steady, form oarse-grained flocs unit, accelerate sedimentation.By means of the Coagulation aiding of polyacrylamide, in the solidifying process of mud of sewage disposal, can there is double ioinization compression, solid particulate aggregation stability in sewage is reduced, under molecular attraction effect, particle combines, the simple negatively charged ion of disperse phase can be aggregated thing anionic group and replace, thereby make the rapid flocculation sediment of COD, suspended substance, heavy metal and metalloid element in cultivation, chemical industry, printing and dyeing, papermaking, electroplating wastewater, and not again stripping in water.
Flocculation agent for sewage disposal of the present invention, can be used for the purifying treatment of various drainings.Not only can be used for the waste water that discharge in food processing plant, metal manufactory, chemical plant etc., can also be used for plant, the draining of slaughterhouse, also can be used for river course, and the purification of lake water quality can not affect environment.
Flocculation agent for sewage disposal provided by the invention has the advantage of organic floculant and inorganic flocculating agent concurrently.During for the treatment of high concentrated organic wastewater, flocculating effect is good, and flocculation rate is fast, and amount of consumption of drugs is few, applied widely, can effectively reduce COD, colourity, turbidity and the total phosphorous of waste water, also can remove algae, especially for high COD, high turbidity, the wastewater treatment efficiency of high chroma is better.
Embodiment
Below in conjunction with specific embodiment, content of the present invention is further described in detail.
Embodiment 1
Take calcium sulfate 2500g, Tai-Ace S 150 2500g, sodium carbonate 2500, polyacrylamide 500g, Sulfothiorine 500g, chitosan 500g, chitosan quaternary ammonium salt 500g, diatomite 500g, cement 500g, citric acid 500g, mix.
Embodiment 2
Take calcium sulfate 200g, potassium aluminium sulfate 200g, sodium carbonate 200g, polyacrylamide 10g, Sulfothiorine 10g, chitosan 10g, chitosan quaternary ammonium salt 10g, diatomite 10g, cement 10g, Tripotassium Citrate 10g, mix.
Embodiment 3
Take calcium sulfate 3000g, aluminum chloride 3000g, sodium carbonate 3000g, polyacrylamide 1000g, Sulfothiorine 1000g, chitosan 1000g, chitosan quaternary ammonium salt 1000g, diatomite 1000g, cement 1000g, lactic acid 1000g, mix.
Embodiment 4
Mixture (weight ratio is 1:1:1) 220g, the sodium carbonate 220g, polyacrylamide 30g, Sulfothiorine 30g, chitosan 30g, chitosan quaternary ammonium salt 30g, diatomite 30g, cement 30g, the tartrate 30g that take calcium sulfate 220g, potassium aluminium sulfate, Tai-Ace S 150, aluminum chloride, mix.
In order to investigate the practical application effect of flocculation agent of the present invention, contriver uses the flocculation agent that embodiment 1-4 prepares to carry out sewage disposal, and result is detected, specific as follows.
In sewage, the add-on of flocculation agent is 1-3kg/m
3, can suitably add and subtract according to water quality situation.The each 1L of waste water that gets 4 class different industries different concns detects respectively and records COD, colourity, turbidity.Be under 300r/min stirs at rotating speed, water sampling 1-4 is the corresponding product 1.8g that adds embodiment 1-4 respectively, and continuously stirring 3 minutes leaves standstill 8 minutes, detects respectively each sample and records COD, colourity, turbidity.(1) sewage sample 1: breeding wastewater.
Flocculation agent: embodiment 1
(2) sewage sample 2: paper waste
Flocculation agent: embodiment 2
(3) sewage sample 3: food starch waste water
Flocculation agent: embodiment 3
(4) sewage sample 4: dyeing waste water.
Flocculation agent: embodiment 4
Respectively the sewage before and after processing is detected, detected result is in table 1.
Table 1
Can be found out by table 1 result, flocculation agent of the present invention is during for the treatment of high concentrated organic wastewater, and flocculating effect is good, and flocculation rate is fast, and amount of consumption of drugs is few, applied widely, can effectively reduce COD, colourity, the turbidity of waste water.
Claims (7)
1. for a flocculation agent for sewage disposal, it is characterized in that, composition comprises: calcium sulfate, aluminium salt, sodium carbonate, polyacrylamide, Sulfothiorine, chitosan, chitosan quaternary ammonium salt, diatomite, cement, pH adjusting agent.
2. a kind of flocculation agent for sewage disposal according to claim 1, it is characterized in that, in weight part, composition comprises: calcium sulfate 20-30 part, aluminium salt 20-30 part, sodium carbonate 20-30 part, polyacrylamide 1-10 part, Sulfothiorine 1-10 part, chitosan 1-10 part, chitosan quaternary ammonium salt 1-10 part, diatomite 1-10 part, cement 1-10 part, pH adjusting agent 1-10 part.
3. a kind of flocculation agent for sewage disposal according to claim 2, it is characterized in that, in weight part, composition comprises: 25 parts, calcium sulfate, 25 parts of aluminium salt, 25 parts, sodium carbonate, 5 parts of polyacrylamides, 5 parts, Sulfothiorine, 5 parts of chitosans, 5 parts of chitosan quaternary ammonium salts, 5 parts, diatomite, 5 parts of cement, 5 parts of pH adjusting agents.
4. a kind of flocculation agent for sewage disposal according to claim 2, it is characterized in that, in weight part, composition comprises: 22 parts, calcium sulfate, 22 parts of aluminium salt, 22 parts, sodium carbonate, 3 parts of polyacrylamides, 3 parts, Sulfothiorine, 3 parts of chitosans, 3 parts of chitosan quaternary ammonium salts, 3 parts, diatomite, 3 parts of cement, 3 parts of pH adjusting agents.
5. a kind of flocculation agent for sewage disposal according to claim 1, is characterized in that, described aluminium salt is selected from one or more in potassium aluminium sulfate, Tai-Ace S 150, aluminum chloride.
6. a kind of flocculation agent for sewage disposal according to claim 1, is characterized in that, described pH adjusting agent is selected from citric acid, Tripotassium Citrate, lactic acid or tartrate.
7. the preparation method of a kind of flocculation agent for sewage disposal as described in claim 1-7 any one, is characterized in that, takes each component and mixes.
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| CN201410344084.0A CN104071881A (en) | 2014-07-18 | 2014-07-18 | Flocculating agent for waste water treatment, and preparation method thereof |
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| CN104229968A (en) * | 2014-10-11 | 2014-12-24 | 淮南矿业(集团)有限责任公司 | Chemical waste leachate treatment agent and treatment method |
| CN104261536A (en) * | 2014-09-28 | 2015-01-07 | 佑景天（北京）国际水环境研究中心有限公司 | Efficient flocculating agent for rapidly removing heavy metals in water |
| CN104310558A (en) * | 2014-09-25 | 2015-01-28 | 青岛佰众化工技术有限公司 | Industrial wastewater flocculating agent |
| CN104944544A (en) * | 2015-05-23 | 2015-09-30 | 张家港市山牧新材料技术开发有限公司 | Papermaking sewage flocculant and preparation method thereof |
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| CN105502529A (en) * | 2015-12-11 | 2016-04-20 | 临沭县环境保护局 | Printing-dyeing wastewater purifier and utilization method of printing-dyeing wastewater purifier |
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| CN105967291A (en) * | 2016-05-10 | 2016-09-28 | 湖州国盛环保工程有限公司 | Flocculating agent for ecological remediation of black smelly surface water and production process thereof |
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| CN106986396A (en) * | 2017-05-04 | 2017-07-28 | 浙江清天地环境工程有限公司 | A kind of modification of chitosan and preparation method thereof |
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| CN107265815A (en) * | 2017-07-25 | 2017-10-20 | 安徽海东环保科技有限公司 | Sewage treatment process in septic tank |
| CN107746099A (en) * | 2017-11-09 | 2018-03-02 | 浙江亲水园生物科技有限公司 | A kind of flocculant and its production method and its application method |
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Application publication date: 20141001 |