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Method for treating ABS sewage

A sewage and biochemical treatment technology, applied in the direction of sustainable biological treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problems of complex impurities in water, failure to meet discharge requirements, unsatisfactory results, etc.

Inactive Publication Date: 2008-05-28
FANGXIA ENTERPRISE INFORMATION CONSULTING WUJIANG
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AI Technical Summary

Problems solved by technology

[0002] ABS sewage is mainly produced in the drying stage and washing tower of the IM-ABS and SAN sections. The main pollutants in the wastewater are styrene, acrylonitrile, etc. The wastewater discharged by industrial ABS has very complicated impurities in the water. The existing sewage treatment technology mostly uses coagulation ——The air flotation method is used for treatment, the effect is not ideal, and the emission requirements cannot be met,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0008] The processing preparation method of the present invention is the following steps:

[0009] ①Adjust the water inlet of the regulating tank: the regulating tank is open to the open air. Since the temperature of the process wastewater is above 50°C, in order to avoid the influence of high temperature on the activated sludge, adjust the water inlet of the regulating tank so that the water inlet of the regulating tank is far away from the water outlet to avoid the impact of high temperature on the activated sludge. Conducive to waste water cooling;

[0010] ②Increase the nutrition of activated sludge: During the initial domestication of sludge, due to the certain toxicity of the process wastewater, the domestication period is prolonged. In order to make the activated sludge grow as soon as possible, the pH value of the activated sludge is adjusted to 6-8 with inorganic acid, and alkali is added. Formula polyaluminum chloride, fully mixed under mechanical stirring, adjust th...

Embodiment 1

[0016] Equipment: regulating tank, flocculant tube, filter press;

[0017] Approach:

[0018] ①Adjust the water inlet of the regulating tank: the regulating tank is open to the open air. Since the temperature of the process wastewater is above 50°C, in order to avoid the influence of high temperature on the activated sludge, adjust the water inlet of the regulating tank so that the water inlet of the regulating tank is far away from the water outlet to avoid the impact of high temperature on the activated sludge. Conducive to waste water cooling;

[0019] ②Increase the nutrition of activated sludge: During the initial domestication of sludge, due to the certain toxicity of the process wastewater, the domestication period is prolonged. In order to make the activated sludge grow as soon as possible, the pH value of the activated sludge is adjusted to 6-8 with inorganic acid, and alkali is added. Formula polyaluminum chloride, fully mixed under mechanical stirring, adjust the pH...

Embodiment 2

[0023] Ingredients: basic polyaluminum chloride, polyacrylamide, its treatment method is the same as embodiment one.

[0024] In summary, the present invention adopts two flocculation and sedimentation separation processes, which can effectively remove SS content in ABS sewage, improve the biodegradability of ABS sewage, and have small investment, good sewage treatment effect, and good economic and social benefits .

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Abstract

The invention provides a disposal method for ABS sewage and adopts a comprehensive method that is the combination of physicochemical treatment and biochemical treatment. The sewage runs through a fine grid and enters a regulating pool. Air is pumped in the regulating pool to unify the water. Separation process of flocculation and sedimentation is adopted twice, which can effectively remove SS content in the ABS sewage and improve the biodegradability of the ABS sewage. The disposal method has the advantages of small investment, effective sewage disposal and better economic and social benefits.

Description

technical field [0001] The invention relates to a method for treating sewage, in particular to a method for treating ABS sewage. Background technique [0002] ABS sewage is mainly produced in the drying stage and washing tower of the IM-ABS and SAN sections. The main pollutants in the wastewater are styrene, acrylonitrile, etc. The wastewater discharged by industrial ABS has very complicated impurities in the water. The existing sewage treatment technology mostly uses coagulation ——The air flotation method is used for treatment, the effect is not ideal, and the emission requirements cannot be met, Contents of the invention [0003] The object of the present invention is to provide a sewage treatment method capable of effectively removing impurities. [0004] The technical scheme provided for realizing the present invention is: [0005] A method for treating ABS sewage, which is characterized in that it adopts a comprehensive method combining physicochemical and biochemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/52C02F3/12
CPCY02W10/10
Inventor 韩国庆
Owner FANGXIA ENTERPRISE INFORMATION CONSULTING WUJIANG
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