CN102838195A - Composite flocculant for sewage treatment - Google Patents

Composite flocculant for sewage treatment Download PDF

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Publication number
CN102838195A
CN102838195A CN2012103402229A CN201210340222A CN102838195A CN 102838195 A CN102838195 A CN 102838195A CN 2012103402229 A CN2012103402229 A CN 2012103402229A CN 201210340222 A CN201210340222 A CN 201210340222A CN 102838195 A CN102838195 A CN 102838195A
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CN
China
Prior art keywords
pac
aluminum chloride
poly aluminum
coal ash
modified coal
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Application number
CN2012103402229A
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Chinese (zh)
Inventor
张成巍
宋俊洲
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大连格兰清水环境工程有限公司
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Application filed by 大连格兰清水环境工程有限公司 filed Critical 大连格兰清水环境工程有限公司
Priority to CN2012103402229A priority Critical patent/CN102838195A/en
Publication of CN102838195A publication Critical patent/CN102838195A/en

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Abstract

The invention relates to the technical field of sewage treatment, in particular to a composite flocculant for sewage treatment. The composite flocculant is prepared by mixing modified diatomite, modified fly ash and aluminum polychlorid based on the ratio, and then grinding, uniformly mixing and sieving to obtain the product. The composite flocculant is high in effect of efficiently flocculating, and is good in comprehensive treatment effect on treating alkaline sewage produced in the printing and dyeing industry, the paper making industry and the chemical industry; and the composite flocculant provides a novel technology worthy to be popularized.

Description

A kind of composite flocculation agent that is used for WWT

Technical fieldThe present invention relates to technical field of sewage, specifically relate to a kind of composite flocculation agent that is used for WWT.

Background technologyInorganic flocculating agent is adopted in WWT the earliest, and this processing is replaced by polymeric flocculant because action effect is low, consumption is big gradually.What polymeric flocculant was disposed of sewage employing is Coagulation Method, and most popular PAC (Poly aluminum Chloride (PAC)) is though effect is good; Safe, but still have that the polymerization degree is big inadequately, flocculation bridge formation ability is weak, water outlet is muddy and problem such as hydrolysis reaction instability, treatment efficiency is single; Throw out is comparatively loose, and decolorizing effect is not good enough, to the compound pollutent, than complicated sewage; Treatment effect is relatively poor, and residual a large amount of aluminium are harmful to environment in the water.

Summary of the inventionThe present invention is in order to solve the shortcoming that flocculation agent exists in the existing sewage disposal technology; Developed a kind of composite flocculation agent that is used for WWT; Its preparation method is that zeyssatite, flyash are carried out mixing with Poly aluminum Chloride (PAC) behind the acid modification, forms a kind of have efficient flocculating effect and adsorbing novel flocculant.

Technical solution of the present invention is a kind of composite flocculation agent that is used for WWT, and it is made up of modification infusorial earth, modified coal ash and Poly aluminum Chloride (PAC), and the weight percent of each material is:

Modification infusorial earth 10~20%;

Modified coal ash 10~20%;

Poly aluminum Chloride (PAC) 60~80%.

Said modification infusorial earth is with the dilute hydrochloric acid solution immersion 16~24h of zeyssatite with 0.1mol/L, then with the tap water flushing, at 450 ℃~600 ℃ following roasting 1h.

Said modified coal ash is with the hydrochloric acid soln submergence of flyash with 0.8mol/L, under ultrasonic frequency 50~100KHz condition, handles 1~2h, with tap water flushing, oven dry.

The treatment process of said Poly aluminum Chloride (PAC) be with Poly aluminum Chloride (PAC) in 80 ℃~90 ℃, the baking 0.5~1h.

The preparation method of aforesaid composite flocculation agent is:

1, with the dilute hydrochloric acid solution immersion 16~24h of zeyssatite, with the tap water flushing,, makes modification infusorial earth then at 450 ℃~600 ℃ following roasting 1h with 0.1mol/L;

2, with the hydrochloric acid soln submergence of flyash, under ultrasonic frequency 50~100KHz condition, handle 1~2h, make modified coal ash with tap water flushing, oven dry with 0.8mol/L;

3, with Poly aluminum Chloride (PAC) in 80 ℃~90 ℃, the baking 0.5~1h;

4, with modification infusorial earth, modified coal ash, Poly aluminum Chloride (PAC) proportionally mix, grinding, mixing and sieve and obtain finished product.

The method of use of aforesaid composite flocculation agent: it is in 8~11 the sewage for pH that this composite flocculation agent is dropped into alkalescence by 0.5~2g/L, flocculation time 0.5~2h, and stir speed (S.S.) is 40~60r/min.

The invention has the advantages that: its by modification infusorial earth, modified coal ash and Poly aluminum Chloride (PAC) proportionally mix, grinding, mixing and sieving obtain; It has efficient flocculating effect and adsorption; The processing of the alkaline sewage that industries such as printing and dyeing, papermaking, chemical industry are produced has the good comprehensive treatment effect, is a kind of new technology with promotional value.

Embodiment

A kind of composite flocculation agent that is used for WWT, it is made up of modification infusorial earth, modified coal ash and Poly aluminum Chloride (PAC), and the weight percent of each material is:

Modification infusorial earth 10~20%;

Modified coal ash 10~20%;

Poly aluminum Chloride (PAC) 60~80%.

Said modification infusorial earth is with the dilute hydrochloric acid solution immersion 16~24h of zeyssatite with 0.1mol/L, then with the tap water flushing, at 450 ℃~600 ℃ following roasting 1h.

Said modified coal ash is with the hydrochloric acid soln submergence of flyash with 0.8mol/L, under ultrasonic frequency 50~100KHz condition, handles 1~2h, with tap water flushing, oven dry.

The treatment process of said Poly aluminum Chloride (PAC) be with Poly aluminum Chloride (PAC) in 80 ℃~90 ℃, the baking 0.5~1h.

The preparation method of aforesaid composite flocculation agent is:

1), zeyssatite is soaked 16~24h with the dilute hydrochloric acid solution of 0.1mol/L, with the tap water flushing,, makes modification infusorial earth then at 450 ℃~600 ℃ following roasting 1h;

2), with the hydrochloric acid soln submergence of flyash with 0.8mol/L, under ultrasonic frequency 50~100KHz condition, handle 1~2h, make modified coal ash with tap water flushing, oven dry;

3), with Poly aluminum Chloride (PAC) in 80 ℃~90 ℃, the baking 0.5~1h;

4), with modification infusorial earth, modified coal ash, Poly aluminum Chloride (PAC) proportionally mix, grinding, mixing and sieve and obtain finished product.

The method of use of aforesaid composite flocculation agent: it is in 8~11 the sewage for pH that this composite flocculation agent is dropped into alkalescence by 0.5~2g/L, flocculation time 0.5~2h, and stir speed (S.S.) is 40~60r/min.

Claims (3)

1. composite flocculation agent that is used for WWT, it is made up of modification infusorial earth, modified coal ash and Poly aluminum Chloride (PAC), and the weight percent of each material is:
Modification infusorial earth 10~20%;
Modified coal ash 10~20%;
Poly aluminum Chloride (PAC) 60~80%;
Said modification infusorial earth is with the dilute hydrochloric acid solution immersion 16~24h of zeyssatite with 0.1mol/L, then with the tap water flushing, at 450 ℃~600 ℃ following roasting 1h.
Said modified coal ash is with the hydrochloric acid soln submergence of flyash with 0.8mol/L, under ultrasonic frequency 50~100KHz condition, handles 1~2h, with tap water flushing, oven dry.
The treatment process of said Poly aluminum Chloride (PAC) be with Poly aluminum Chloride (PAC) in 80 ℃~90 ℃, the baking 0.5~1h.
2. the preparation method who is used for the composite flocculation agent of WWT as claimed in claim 1 is characterized in that: its preparation process is:
1) with the dilute hydrochloric acid solution immersion 16~24h of zeyssatite, with the tap water flushing,, makes modification infusorial earth then at 450 ℃~600 ℃ following roasting 1h with 0.1mol/L;
2) with the hydrochloric acid soln submergence of flyash, under ultrasonic frequency 50~100KHz condition, handle 1~2h, make modified coal ash with tap water flushing, oven dry with 0.8mol/L;
3) with Poly aluminum Chloride (PAC) in 80 ℃~90 ℃, the baking 0.5~1h;
4) with modification infusorial earth, modified coal ash, Poly aluminum Chloride (PAC) proportionally mix, grinding, mixing and sieve and obtain finished product.
3. the method for use that is used for the composite flocculation agent of WWT as claimed in claim 1 is characterized in that: it is in 8~11 the sewage for pH that this composite flocculation agent is dropped into alkalescence by 0.5~2g/L, flocculation time 0.5~2h, and stir speed (S.S.) is 40~60r/min.
CN2012103402229A 2012-09-14 2012-09-14 Composite flocculant for sewage treatment CN102838195A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CN2012103402229A CN102838195A (en) 2012-09-14 2012-09-14 Composite flocculant for sewage treatment

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CN102838195A true CN102838195A (en) 2012-12-26

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103232101A (en) * 2013-05-31 2013-08-07 滁州友林科技发展有限公司 Water treatment flocculating agent
CN103641245A (en) * 2013-12-27 2014-03-19 姚为 Papermaking wastewater treating agent and preparation method thereof
CN103641247A (en) * 2013-12-27 2014-03-19 姚为 Domestic sewage treatment agent and preparation method thereof
CN104445551A (en) * 2014-11-14 2015-03-25 安徽宏祥丝绸织造有限公司 Silk dyeing process wastewater treatment agent and preparation method thereof
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
CN106219718A (en) * 2016-08-30 2016-12-14 杜普利 High salt acid sewage treating agent
CN106315736A (en) * 2016-09-08 2017-01-11 北京神雾环境能源科技集团股份有限公司 Method for preparing decolorizing agent from calcium carbide furnace gas dust for printing and dyeing wastewater
CN106430482A (en) * 2016-09-29 2017-02-22 绵阳市科学城红杉科技有限责任公司 Papermaking middle-stage wastewater treatment chemical

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CN101880101A (en) * 2010-02-03 2010-11-10 王鹤立 Composite technology for treatment of urban wastewater in complete set of physical and chemical methods
CN102452709A (en) * 2010-10-15 2012-05-16 中国石油化工股份有限公司 Fly ash composite flocculating agent and preparation method thereof

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CN101125701A (en) * 2007-08-28 2008-02-20 南京大学 Blue algae mud reinforced coagulant aid and application thereof in blue algae mud treatment
CN101880101A (en) * 2010-02-03 2010-11-10 王鹤立 Composite technology for treatment of urban wastewater in complete set of physical and chemical methods
CN102452709A (en) * 2010-10-15 2012-05-16 中国石油化工股份有限公司 Fly ash composite flocculating agent and preparation method thereof

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103232101A (en) * 2013-05-31 2013-08-07 滁州友林科技发展有限公司 Water treatment flocculating agent
CN103232101B (en) * 2013-05-31 2014-06-18 滁州友林科技发展有限公司 Water treatment flocculating agent
CN103641245A (en) * 2013-12-27 2014-03-19 姚为 Papermaking wastewater treating agent and preparation method thereof
CN103641247A (en) * 2013-12-27 2014-03-19 姚为 Domestic sewage treatment agent and preparation method thereof
CN103641245B (en) * 2013-12-27 2016-02-10 汕头市龙湖区粤安纸业有限公司 A kind of paper-making waste water treating agent and preparation method thereof
CN103641247B (en) * 2013-12-27 2016-04-06 沧州市利达环保工程有限公司 One way of life sewage-treating agent and preparation method thereof
CN104445551A (en) * 2014-11-14 2015-03-25 安徽宏祥丝绸织造有限公司 Silk dyeing process wastewater treatment agent and preparation method thereof
CN104445551B (en) * 2014-11-14 2016-09-07 安徽宏祥丝绸织造有限公司 A kind of silk dyeing process sewage-treating agent and preparation method thereof
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
CN106219718A (en) * 2016-08-30 2016-12-14 杜普利 High salt acid sewage treating agent
CN106219718B (en) * 2016-08-30 2019-06-11 杜普利 Acid sewage treating agent with high salt
CN106315736A (en) * 2016-09-08 2017-01-11 北京神雾环境能源科技集团股份有限公司 Method for preparing decolorizing agent from calcium carbide furnace gas dust for printing and dyeing wastewater
CN106430482A (en) * 2016-09-29 2017-02-22 绵阳市科学城红杉科技有限责任公司 Papermaking middle-stage wastewater treatment chemical
CN106430482B (en) * 2016-09-29 2019-06-04 四川红杉岭环保科技有限公司 A kind of papermaking midcourse wastewater treatment agent

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Application publication date: 20121226