Printing and packaging wastewater treatment process

A wastewater treatment, printing and packaging technology, applied in water/sewage treatment, biological water/sewage treatment, flotation water/sewage treatment, etc., can solve the problems of industrial wastewater biochemical tail water not meeting discharge standards, water environment hazards, ecological problems, etc. To solve the problems of high toxicity, to achieve the effect of increasing the sludge age, high volume load, and improving the treatment capacity

Pending Publication Date: 2020-08-04
上海多狄环保科技有限公司
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Problems solved by technology

[0002] There are a large number of refractory organic pollutants in industrial wastewater (such as chemical industry, pharmaceuticals, printing and dyeing, etc.). After traditional biochemical treatment, the refractory organic pollutants still remain in the biochemical tail water, resulting in the industrial wastewater biochemical tail water not meeting the discharge standards. At the same time, the ecotoxicity is high, causing serious harm to the water environment

Method used

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  • Printing and packaging wastewater treatment process

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Experimental program
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Embodiment

[0032] A printing and packaging wastewater treatment process, comprising the following steps:

[0033] (1) The wastewater from the workshop is directly discharged into the sump, and then automatically sent to the sewage treatment regulating tank according to the liquid level. The air mixing system fully mixes the wastewater in the regulating tank to achieve a state of homogeneity and quantity;

[0034] (2) The wastewater is transported from the adjustment tank to the mixed reaction sedimentation tank through the wastewater lifting pump, and flocculant is added to the mixed reaction sedimentation tank, so that the SS and oily substances in the wastewater undergo coagulation and flocculation reactions, thereby transforming into easy The precipitated large-grained alum flowers separate the solid pollutants from the wastewater, and the sludge separated from the reaction sedimentation tank is discharged into the sludge tank;

[0035] (3) Lift the wastewater to the air flotation rea...

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Abstract

The invention relates to the technical field of wastewater treatment, in particular to a printing and packaging wastewater treatment process. In the process system disclosed by the invention, a fixedfiller is added in an anaerobic tank as a biological attachment carrier, so that the total biomass of the system is more than two times that of an activated sludge process with the same volume, and the treatment capability of the sewage biochemical treatment system is greatly improved. The filler plays a role in forced turbulence of water flow and air flow, promotes full contact of pollutants, airand microbial cells in water, and substantially strengthens the mass transfer process. The process is beneficial to improvement of the sludge age of sludge in the system, high volume load of a reactor, short hydraulic retention time, high oxygen conversion rate and effective saving of investment and operation cost.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a printing and packaging wastewater treatment process. Background technique [0002] There are a large number of refractory organic pollutants in industrial wastewater (such as chemical industry, pharmaceuticals, printing and dyeing, etc.). After traditional biochemical treatment, the refractory organic pollutants still remain in the biochemical tail water, resulting in the industrial wastewater biochemical tail water not meeting the discharge standards. , At the same time, the ecotoxicity is high, causing serious harm to the water environment. [0003] The production process of the printing and dyeing industry mainly refers to the processes of desizing, scouring, bleaching, mercerizing, dyeing, printing and finishing of cotton, chemical fiber and blended fabrics. my country's textile industry has a large volume and a wide area, and the wastewater produced is large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/52C02F1/24C02F1/5245C02F1/56C02F3/12C02F3/02C02F3/2806C02F3/341C02F2301/046
Inventor 邓海国
Owner 上海多狄环保科技有限公司
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