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Asphalt production wastewater treatment process

A technology for the production of waste water and treatment process, applied in the direction of biological water/sewage treatment, multi-stage water treatment, water/sewage treatment, etc., which can solve the hidden dangers of the ecological environment, low removal rate of SS and COD, and sewage not reaching the second level of sewage discharge Level standards and other issues, to achieve high oil removal rate, low suspended solids in effluent, and reduce the effect of ozone dosage

Active Publication Date: 2018-06-01
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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  • Asphalt production wastewater treatment process

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Embodiment 1

[0038] The asphalt production wastewater treatment process of the present embodiment is carried out according to the following steps:

[0039] (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;

[0040] (2) After adjusting the water out of the oil removal tank, it flows into the loading coagulation degreaser to further remove free insoluble oil;

[0041] (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;

[0042] (4) The wastewater from the balance tank passes through the coagulation, flocculation...

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Abstract

The invention belongs to the technical field of sewage treatment and particularly relates to an asphalt production wastewater treatment process, which includes the following steps: collecting asphaltproduction wastewater through a pipe network in a plant area and feeding the wastewater into a wastewater treatment system, lifting the wastewater to a regulation and oil removal tank to remove floating oil and sludge in the wastewater; feeding the floating sludge into a sludge treatment system; and treating the wastewater through the regulation and oil removal tank, a loading coagulation oil remover, a balancing tank, a coagulation and flocculation floatation tank, a secondary settlement tank, a pre-ozone contact tank and an aeration bio-filter tank, so that generally, the pollutant indices of the discharged water from the aeration bio-filter tank can reach standards, and then the water can be fed into a clear water tank. The method can increase removal rate of SS and COD in the asphalt production wastewater, so that the asphalt production wastewater can reach emission standard and environment pollution is reduced.

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 generated in the asphalt production process is not only turbid and worrying, 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 proble...

Claims

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Application Information

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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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