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Urea-containing printing and dyeing wastewater processing equipment and processing method thereof

A technology for printing and dyeing wastewater and treatment equipment, which is used in textile industry wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. to improve biodegradability, realize denitrification and denitrification, and improve effluent quality. Effect

Inactive Publication Date: 2015-08-05
SHAOXING HEQIAO JIANGBIN WATER TREATMENT
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Problems solved by technology

The traditional biological treatment process has been seriously challenged

Method used

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  • Urea-containing printing and dyeing wastewater processing equipment and processing method thereof

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Embodiment Construction

[0026] Please refer to the attached figure 1 As shown, the present invention is a kind of urea-containing printing and dyeing wastewater treatment equipment, which is composed of a regulating tank 1, an oxidation reaction tank 2, a primary sedimentation tank 3, a hydrolytic acidification tank 4, an oxidation ditch 5, and a secondary sedimentation tank 6.

[0027] Wherein, the regulating tank 1, the oxidation reaction tank 2, the primary sedimentation tank 3, the hydrolytic acidification tank 4, the oxidation ditch 5 and the secondary sedimentation tank 6 are connected in sequence to form an integrated processing equipment.

[0028] Further, a sludge discharge pipe 7 is provided at the bottom of the primary sedimentation tank 3 and the secondary sedimentation tank 6 , and the sludge discharge pipe 7 is connected to a sludge concentration tank 8 .

[0029] The oxidation ditch 5 is an Aubert oxidation ditch, and a mixed liquid return pipe 9 is arranged in the central area thereof...

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Abstract

The invention relates to urea-containing printing and dyeing wastewater processing equipment and its processing method. The equipment comprises a regulating tank, an oxidation reaction tank, a primary sedimentation tank, a hydrolysis acidification tank, an oxidation ditch and a secondary sedimentation tank. The regulating tank, the oxidation reaction tank, the primary sedimentation tank, the hydrolysis acidification tank, the oxidation ditch and the secondary sedimentation tank are successively connected to form integrated processing equipment. The urea-containing printing and dyeing wastewater processing equipment and its processing method combine advantages of coagulation, decoloration and nitrogen removal processing. After printing and dyeing mother liquor wastewater is treated by the processing method, ammonia nitrogen, chroma and COD can be effectively degraded. Processing can meet the requirement of discharging into a pipe network. The equipment and the method have low processing cost and are simple to operate and easy to control.

Description

technical field [0001] The invention relates to a wastewater treatment equipment and method, in particular to a urea-containing printing and dyeing wastewater treatment equipment and a treatment method thereof, belonging to the technical field of industrial wastewater treatment. Background technique [0002] Printing and dyeing enterprises are large dischargers of industrial wastewater. It has the characteristics of large water volume, high content of organic pollutants, deep color, and large changes in water quality. It is difficult to treat industrial wastewater. At present, the commonly used printing and dyeing wastewater treatment processes in China are mainly divided into two categories: one is physical and chemical methods, that is, adding flocculants for precipitation or air flotation to remove pollutants in wastewater. Due to the high cost of dosing, incomplete removal of pollutants, large amount of sludge and difficulty in further treatment, a certain amount of seco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/30
Inventor 韩兴灿王一飞
Owner SHAOXING HEQIAO JIANGBIN WATER TREATMENT
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