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A kind of asphalt production wastewater treatment process

A technology for production of wastewater and treatment process, applied in biological water/sewage treatment, multi-stage water treatment, water/sewage treatment, etc., which can solve the hidden dangers of the ecological environment, low SS and COD removal rates, and sewage that cannot reach sewage discharge. grading standards, etc.

Active Publication Date: 2021-04-09
盘锦北方沥青股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The asphalt sewage treatment device in the prior art has a low removal rate of SS and COD, and the treated sewage does not meet the secondary standard of sewage discharge, which brings great hidden dangers to the ecological environment

Method used

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  • A kind of asphalt production wastewater treatment process

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Effect test

Embodiment 1

[0037] The asphalt production wastewater treatment process of the present embodiment is carried out according to the following steps:

[0038] (1) Asphalt production wastewater is collected into the wastewater treatment system through the pipe network in the factory area, and firstly lifted into the regulating degreasing tank to remove the slick oil and floating mud in the wastewater; wastewater water quality: oil content 300-1200mg / L, SS300-500mg / L , Volatile phenol 50~100mg / L;

[0039] (2) Adjust the effluent of the oil removal tank and then flow into the loading coagulation degreaser to further remove free insoluble oil;

[0040] (3) Load the effluent of the coagulation degreaser into the neutralization tank, adjust the pH according to the raw water quality, and then enter the balance tank to adjust the water quality and water quantity of the wastewater, and remove sulfide;

[0041] (4) The wastewater from the balance tank passes through the coagulation, flocculation and a...

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Abstract

The invention belongs to the technical field of sewage treatment, and in particular relates to a treatment process for asphalt production wastewater. The asphalt production wastewater of the present invention is collected into the wastewater treatment system through the factory pipe network, firstly lifted into the regulating degreasing tank to remove the floating oil and floating mud in the wastewater, and the floating mud enters the sludge treatment system, and then through the regulating deoiling tank, loaded Coagulation degreaser, equalization tank, coagulation flocculation air flotation tank, secondary sedimentation tank, pre-ozone contact tank, biological aerated filter, and all pollutant indicators in the effluent of biological aerated filter can generally meet the discharge standards and enter the clean water tank. The invention can improve the removal rate of SS and COD in the asphalt production wastewater, make it reach the discharge standard, and reduce environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a treatment process for asphalt production wastewater. Background technique [0002] The problem of water pollution has attracted widespread attention from all over the world. Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. The sewage produced in the asphalt production process is not only turbid and smelly, but also contains many harmful substances. The key point and difficulty in the treatment of asphalt production wastewater is how to improve the removal rate of COD in wastewater. The asphalt sewage treatment device in the prior art has a low removal rate of SS and COD, and the treated sewage does not meet the secondary standard of sewage discharge, which brings great hidden dangers to the ecological environment. Contents of the invention [0003] Aiming at the problems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/24C02F1/40C02F1/52C02F1/5281C02F1/56C02F1/66C02F1/725C02F1/78C02F3/302C02F9/00C02F2201/782C02F2203/006C02F2209/08C02F2301/046C02F2301/08C02F2303/14
Inventor 唐治钫杨伟王晓阳王群焦勇华李向辉孙秀丽
Owner 盘锦北方沥青股份有限公司
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