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Potato starch waste water macro-molecule organic matter separation treatment special-purpose flocculating agent

A technology for separation and treatment of potato starch, applied in the direction of flocculation/sedimentation water/sewage treatment, water/sewage treatment, adsorption water/sewage treatment, etc. Eliminate odor and other problems, and achieve the effects of low treatment cost, reduced fresh water consumption, and low operation and maintenance costs

Inactive Publication Date: 2016-05-04
GANSU BUILDING MATERIALS DESIGN & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country is a large potato production and consumption country. A large amount of wastewater is produced in the process of potato starch processing. Since the COD value of potato starch wastewater is extremely high, direct discharge will affect the survival of fish and other aquatic animals. At the same time, anaerobic microorganisms in the water decompose the organic matter in it. Harmful gases such as hydrogen sulfide, ammonia and mercaptans are released, deteriorating water quality, seriously polluting rivers, reservoirs and the surrounding atmospheric environment. With the strengthening of water pollution prevention and control in the country, many potato starch manufacturers are facing restricted production Or the situation of stopping production seriously restricts the development of potato industry
[0003] Biological treatment of potato starch wastewater is technically feasible, but there are problems such as high treatment cost, special odor of wastewater after treatment, and poor treatment effect when used in cold regions, which cannot meet the requirements of environmental control indicators

Method used

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  • Potato starch waste water macro-molecule organic matter separation treatment special-purpose flocculating agent

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Effect test

Embodiment 1

[0031] The formula of special flocculant for separation and treatment of macromolecular organic matter in a kind of potato starch wastewater of the present invention is as follows:

[0032] Ultrafine attapulgite 30kg, polyacrylamide 22kg, ferric chloride 6kg, urea 8kg, polyaluminum chloride 15kg, polyferric sulfate 17kg and natural cationic polysaccharide chitosan 2kg.

[0033] The preparation method of the special flocculant for the separation and treatment of macromolecular organic matter in a kind of potato starch wastewater of the present invention is:

[0034] Mix 30kg of superfine attapulgite, 22kg of polyacrylamide, 6kg of ferric chloride, 8kg of urea, 15kg of polyaluminum chloride, 17kg of polyferric sulfate and 2kg of natural cationic polysaccharide chitosan to obtain a special flocculant.

Embodiment 2

[0036] The formula of special flocculant for separation and treatment of macromolecular organic matter in a kind of potato starch wastewater of the present invention is as follows:

[0037] Ultrafine attapulgite 25kg, polyacrylamide 18kg, ferric chloride 8kg, urea 12kg, polyaluminum chloride 19kg, polyferric sulfate 17kg and natural cationic polysaccharide chitosan 1kg.

[0038] The preparation method of the special flocculant for the separation and treatment of macromolecular organic matter in a kind of potato starch wastewater of the present invention is:

[0039] Mix 25kg of ultra-fine attapulgite, 18kg of polyacrylamide, 8kg of ferric chloride, 12kg of urea, 19kg of polyaluminum chloride, 17kg of polyferric sulfate and 1kg of natural cationic polysaccharide chitosan to obtain a special flocculant.

Embodiment 3

[0041] The formula of special flocculant for separation and treatment of macromolecular organic matter in a kind of potato starch wastewater of the present invention is as follows:

[0042]Ultrafine attapulgite 26kg, polyacrylamide 18kg, ferric chloride 8kg, urea 10kg, polyaluminum chloride 16kg, polyferric sulfate 21kg and natural cationic polysaccharide chitosan 1kg.

[0043] The preparation method of the special flocculant for the separation and treatment of macromolecular organic matter in a kind of potato starch wastewater of the present invention is:

[0044] Mix 26kg of superfine attapulgite, 18kg of polyacrylamide, 8kg of ferric chloride, 10kg of urea, 16kg of polyaluminum chloride, 21kg of polyferric sulfate and 1kg of natural cationic polysaccharide chitosan to obtain a special flocculant.

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Abstract

The invention provides a potato starch waste water macro-molecule organic matter separation treatment special-purpose flocculating agent. The flocculating agent comprises, by mass, 20-30% of ultrafine attapulgite, 18-22% of polyacrylamide, 5-10% of iron chloride, 8-12% of urea, 15-19% of polyaluminum chloride, 17-21% of polyferric sulfate and 1-2% of natural cation polysaccharide chitosan. The organic matters and inorganic matters are compounded and produce synergism so that flocculation effects are obviously improved and a COD clearance rate is improved to 90%. Through the special-purpose flocculating agent, after one flocculating settling process, the potato starch waste water has a COD concentration reduced to 1000-2000mg / L from 10000-30000mg / L and the black waste water becomes clear and transparent.

Description

technical field [0001] The invention relates to a special flocculant for separation and treatment of macromolecular organic matter in potato starch wastewater. Background technique [0002] my country is a large potato production and consumption country. A large amount of wastewater is produced in the process of potato starch processing. Since the COD value of potato starch wastewater is extremely high, direct discharge will affect the survival of fish and other aquatic animals. At the same time, anaerobic microorganisms in the water decompose the organic matter in it. Harmful gases such as hydrogen sulfide, ammonia and mercaptans are released, deteriorating water quality, seriously polluting rivers, reservoirs and the surrounding atmospheric environment. With the strengthening of water pollution prevention and control in the country, many potato starch manufacturers are facing restricted production Or the situation of stopping production has seriously restricted the developme...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F1/52C02F1/54C02F1/28
CPCC02F1/56C02F1/281C02F1/285C02F1/286C02F1/5236C02F1/5263C02F1/54
Inventor 冯启彪邵继新孟渊张馨予袁静李鸿洲李文斌田斌守王音璇司双龙杨雷俊
Owner GANSU BUILDING MATERIALS DESIGN & RES INST CO LTD
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