Treating and recycling zero-emission technology and equipment for coking phenol-cyanogen wastewater

Abstract

The invention discloses a treating and recycling zero-emission technology for coking phenol-cyanogen wastewater. According to the treating and recycling zero-emission technology, a pre-sedimentation oil separating tank, an air floating system, an adjusting aeration tank, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a coagulating reaction tank, a quick filtering tank, an ultrafiltration raw water tank, an ultrafiltration system, a nanofiltration system, a reverse osmosis system, a concentrated water aerobic tank, a concentrated water anoxic tank, an SBR tank, a chemical oxidation tank, a bitter water film concentrating system, a softening rigidity removing system, a low-pressure sea-water film system, a high-pressure sea-water film system, an MVR evaporating system, a sludge thickening tank, a press filter and a Roots blower are adopted for technological treatment. The invention further discloses treating and recycling zero-emission equipment for coking phenol-cyanogen wastewater. The treating and recycling zero-emission technology and equipment are high in treatment efficiency and low in cost, and have the advantages that zero emission of sewage can be realized.

Description

technical field

[0001] The invention relates to a zero-discharge process and equipment for the treatment and reuse of coking phenol cyanide wastewater. Background technique

[0002] Coking wastewater is high-concentration organic wastewater produced during coal coking, gas purification, and coking product processing. It contains a large amount of organic and inorganic pollutants such as phenols and cyanides. It is highly polluting and difficult to degrade. Existing treatment methods generally fall into three categories: physical-chemical methods, biochemical methods, and physical-chemical-biochemical methods, such as the processing methods disclosed in patents with publication numbers CN1721344 and CN100348519. Although the existing treatment processes can treat coking phenol-cyanide wastewater, there is room for optimization and improvement in terms of process flow, treatment cost, and treatment effect. Contents of the invention

[0003] The object of the present inventi...

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