CN102992458A - Flocculating agent for treating leather waste water - Google Patents

Flocculating agent for treating leather waste water Download PDF

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Publication number
CN102992458A
CN102992458A CN201210487064XA CN201210487064A CN102992458A CN 102992458 A CN102992458 A CN 102992458A CN 201210487064X A CN201210487064X A CN 201210487064XA CN 201210487064 A CN201210487064 A CN 201210487064A CN 102992458 A CN102992458 A CN 102992458A
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China
Prior art keywords
waste water
flocculating agent
flocculation agent
leather waste
xylogen
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CN201210487064XA
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Chinese (zh)
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洪仁作
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Individual
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Individual
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Abstract

The invention provides a flocculating agent for treating leather waste water. The flocculating agent comprises the following ingredients in parts by weight: 5-8 of polysilicate aluminum ferrite, 10-15 of polyferric chloride sulfate, 3-6 of polyacrylamide, and 8-12 of lignin which is quaternary ammonium lignin. Compared with the prior art, the flocculating agent is low in dosage, high in BOD (Biochemical Oxygen Demand) and COD (Chemical Oxygen Demand) removal rate, and can also effectively remove Cr2+, sulfide, SS and chromaticity.

Description

Flocculation agent for the treatment of leather waste water
Technical field
The present invention relates to a kind of water conditioner, be specifically related to a kind of flocculation agent for wastewater treatment, relate in particular to a kind of flocculation agent for the leather waste water processing.
Background technology
At present leather industry production generally comprises several workshop sections such as degreasing, liming depilation, softening, tanning, dyeing processing, drying, ornamenting, needs to add multi-chemical in the course of processing, thereby so that contains a large amount of pollution substances and toxic substance in the leather waste water.Leather waste water not only output is large, and is the organic waste water of a kind of complicated component, high density, wherein contains the hazardous and noxious substances such as large quantities of lime, dyestuff, protein, salt, grease, ammonia nitrogen, sulfide, chromic salts and hairs, skin slag, silt particle.COD Cr, BOD 5, sulfide, ammonia nitrogen, suspended substance etc. are very high, are a kind of trade effluents than the refractory reason.In leather is produced, because the difference of the difference of raw material skin, complete processing difference, finished product, the sewage quality difference is very large, especially the difference of COD, owing to used a large amount of grease-removing agents, fatting agent and tensio-active agent in the leather production, sewage is processed by the aeration aerobic activated sludge process of routine, produces easily a large amount of foams, and active sludge can be run away along with foam.
Flocculation process is one of most widely used general, the most general unit operation in the leather waste water treating processes, is that leather waste water is processed indispensable key link.The quality of flocculating effect has often determined operation conditions, final outflow water water quality and the expense of follow-up flow process.The selection of flocculation agent has important Technological Economy to be worth for raising effluent quality, reduction water producing cost.Flocculation process normally adds flocculation agent in waste water, make suspended particulates loss of stability, the mutual coagulation of micelle phase in the waste water that particulate is increased, and forms flocs unit, alumen ustum.Flocs unit is grown up and namely break away from aqueous phase precipitation under action of gravity behind certain volume, thereby removes a large amount of suspended substances in the waste water, reaches the effect of water treatment.
Summary of the invention
Because the complicated component of leather waste water, the water quality difference is large, and single flocculation agent often can't be taken into account the flocculation treatment of multiple pollutant, thereby affects flocculating effect.The present invention the invention provides a kind of different quality that is applicable to for addressing the above problem, and most of hazardous contaminant in the leather waste water is all had the flocculation agent of good flocculating effect.
For achieving the above object, the present invention adopts following technical scheme:
A kind of flocculation agent for the treatment of leather waste water is comprised of following component by mass parts:
In the preferred scheme of the present invention, described xylogen is the quaternary ammonium type xylogen.Such as the xylogen with the dimethyl diallyl ammonium chloride modification.
In the further preferred scheme of the present invention, described quaternary ammonium type xylogen is epoxychloropropane modified quaternary ammonium type xylogen.As adopt triethylamine and epoxychloropropane modified xylogen etc.
The preferred flocculation agent of the present invention consists of to divide by following component by quality and forms:
Figure GDA00002467846900022
Polymeric aluminium ferrum silicate has the ion height, soluble in water (fully water-soluble in whole pH value scope, and be not subjected to the impact of low water temperature), not becoming gel, stability to hydrolysis is good, is applicable to the characteristics such as influence that the water quality scope extensively and not is subjected to low water temperature.Be fit to and other flocculation agent compound use very much.
Polyaluminum sulfate iron(ic) chloride is a kind of inorganic polymer iron-based flocculating agent.Have that flco forms that speed is fast, pellet density is large, consumption is few, COD, the BOD clearance is high, applicable pH range is wide advantage.
Xylogen is the natural polymer mixture, complicated component, composition is unstable, performance inconsistency is large, by chemical modification change lignin function group content, introduce new functional group, change efficient, the stable lignin flocculant that macromolecular sterie configuration etc. obtains, not only have good flocculating settling and decoloration performance, can also satisfy the needs of multiple-quality water requirement in the complicated water quality situation.
Than prior art, it is few that the present invention has dosage, and BOD, COD clearance height can also effectively be removed Cr 2+, sulfide, SS and colourity.
Embodiment
The following examples can make the present invention of those of ordinary skill in the art's comprehend, but do not limit the present invention in any way.
Embodiment 1
For the treatment of the flocculation agent of leather waste water, formed by following component by mass parts:
Figure GDA00002467846900031
In the present embodiment, adopt triethylamine and epoxychloropropane modified xylogen.
Under the room temperature condition, said components is fully mixed, stir hold over night after 3 ~ 4 hours, namely get flocculation agent provided by the invention.
The present embodiment flocculation agent is to COD CrClearance can reach more than 90%, the clearance of sulfide and SS is reached more than 95%, chroma removal rate surpasses 96%.
Embodiment 2
For the treatment of the flocculation agent of leather waste water, formed by following component by mass parts:
Figure GDA00002467846900032
In the present embodiment, adopt triethylamine and epoxychloropropane modified xylogen.
Under the room temperature condition, said components is fully mixed, stir hold over night after 3 ~ 4 hours, namely get flocculation agent provided by the invention.
The present embodiment flocculation agent can reach more than 90% the clearance of CODCr, and the clearance of sulfide and SS is reached more than 95%, and chroma removal rate surpasses 96%.
Embodiment 3
For the treatment of the flocculation agent of leather waste water, formed by following component by mass parts:
Figure GDA00002467846900033
In the present embodiment, adopt triethylamine and epoxychloropropane modified xylogen.
Under the room temperature condition, said components is fully mixed, stir hold over night after 3 ~ 4 hours, namely get flocculation agent provided by the invention.
The present embodiment flocculation agent can reach more than 90% the clearance of CODCr, and the clearance of sulfide and SS is reached more than 95%, and chroma removal rate surpasses 96%.

Claims (4)

1. for the treatment of the flocculation agent of leather waste water, it is characterized in that being formed by following component by mass parts:
Figure FDA00002467846800011
2. flocculation agent according to claim 1, it is characterized in that: described xylogen is the quaternary ammonium type xylogen.
3. flocculation agent according to claim 2, it is characterized in that: described quaternary ammonium type xylogen is epoxychloropropane modified quaternary ammonium type xylogen.
4. the described flocculation agent of any claim according to claim 1 ~ 3 is characterized in that dividing by following component by quality forming:
Figure FDA00002467846800012
CN201210487064XA 2012-11-26 2012-11-26 Flocculating agent for treating leather waste water Pending CN102992458A (en)

Priority Applications (1)

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CN201210487064XA CN102992458A (en) 2012-11-26 2012-11-26 Flocculating agent for treating leather waste water

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CN201210487064XA CN102992458A (en) 2012-11-26 2012-11-26 Flocculating agent for treating leather waste water

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103641224A (en) * 2013-12-11 2014-03-19 山东华亚环保科技有限公司 Flocculating agent used for slaughter wastewater
CN103787479A (en) * 2014-03-10 2014-05-14 湖北大学 Efficient powdery broad-spectrum wastewater agglomerant
CN105692844A (en) * 2016-04-21 2016-06-22 苏州云舒新材料科技有限公司 High-chromaticity/high-turbidity wastewater treatment material and usage thereof
CN108455713A (en) * 2018-03-19 2018-08-28 南阳中昊科技有限公司 A kind of novel wastepaper deinking waste water flocculant and preparation method thereof
CN110563105A (en) * 2019-09-18 2019-12-13 北京利赛格环保科技有限公司 Compound water treatment agent
CN113830870A (en) * 2021-09-30 2021-12-24 海口宜坤环境技术有限公司 Sewage flocculant and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1146999A (en) * 1996-07-12 1997-04-09 清华大学 Process for synthesis of lignin quaternary cation flocculant
JP2001038382A (en) * 1999-07-30 2001-02-13 Kawasaki City Method for removing phosphorus in waste water
CN1298839A (en) * 1999-12-09 2001-06-13 中国石油化工集团公司 Process for treating waste water containing sulfanilamide
CN102557361A (en) * 2010-12-23 2012-07-11 新奥科技发展有限公司 Sludge gasification method

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
CN1146999A (en) * 1996-07-12 1997-04-09 清华大学 Process for synthesis of lignin quaternary cation flocculant
JP2001038382A (en) * 1999-07-30 2001-02-13 Kawasaki City Method for removing phosphorus in waste water
CN1298839A (en) * 1999-12-09 2001-06-13 中国石油化工集团公司 Process for treating waste water containing sulfanilamide
CN102557361A (en) * 2010-12-23 2012-07-11 新奥科技发展有限公司 Sludge gasification method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
祁鲁梁等: "《水处理药剂及材料实用手册》", 31 March 2000, 中国石化出版社 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103641224A (en) * 2013-12-11 2014-03-19 山东华亚环保科技有限公司 Flocculating agent used for slaughter wastewater
CN103641224B (en) * 2013-12-11 2015-08-05 徐茂航 A kind of flocculation agent for slaughterhouse wastewater
CN103787479A (en) * 2014-03-10 2014-05-14 湖北大学 Efficient powdery broad-spectrum wastewater agglomerant
CN103787479B (en) * 2014-03-10 2015-07-29 湖北大学 The agent of powder-type wide spectrum waste water coacervation
CN105692844A (en) * 2016-04-21 2016-06-22 苏州云舒新材料科技有限公司 High-chromaticity/high-turbidity wastewater treatment material and usage thereof
CN105692844B (en) * 2016-04-21 2018-12-21 浙江绍肖印染有限公司 A kind of high chroma/high-turbidity sewage processing material and its application method
CN108455713A (en) * 2018-03-19 2018-08-28 南阳中昊科技有限公司 A kind of novel wastepaper deinking waste water flocculant and preparation method thereof
CN108455713B (en) * 2018-03-19 2021-06-04 南阳中昊科技有限公司 Waste paper deinking wastewater flocculant and preparation method thereof
CN110563105A (en) * 2019-09-18 2019-12-13 北京利赛格环保科技有限公司 Compound water treatment agent
CN113830870A (en) * 2021-09-30 2021-12-24 海口宜坤环境技术有限公司 Sewage flocculant and preparation method thereof

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Application publication date: 20130327