Coking wastewater treatment process and coking wastewater treatment equipment

A technology of coking wastewater and treatment equipment, which is applied in the direction of flotation water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., which can solve the problems of high operating costs, large-scale biological treatment facilities, High investment costs and other issues, to achieve the effect of reducing investment and floor area, shortening denitrification time, and reducing production and operation costs

Inactive Publication Date: 2009-12-09
UNIVERSTAR SCI & TECH SHENZHEN
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Problems solved by technology

However, biological treatment technology still has the problems of large-s

Method used

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  • Coking wastewater treatment process and coking wastewater treatment equipment
  • Coking wastewater treatment process and coking wastewater treatment equipment

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Embodiment Construction

[0031] Such as figure 1 A kind of coking wastewater treatment equipment is shown: it mainly includes grease trap 1, air flotation tank 2, regulating tank 3, hydrolysis acidification tank 4, BSBR tank 5, as well as pipelines connecting the above units, valves and infusion pumps installed on the pipelines and a control unit; the BSBR reaction tank is fixedly filled with elastic three-dimensional packing; the sludge in the BSBR tank 5 is returned to the hydrolysis acidification tank 4 .

[0032] A coking wastewater treatment process: the wastewater is discharged into the advection grease trap 1 through the sewage pipeline to remove the slick oil on the surface, and then enters the air flotation system to remove emulsified tar and part of COD and BOD, and the effluent flows into the regulating tank to balance the water quality and quantity. Then enter the up-flow hydrolysis acidification pool 4 to convert the refractory polycyclic aromatic hydrocarbons and heterocyclic compounds i...

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Abstract

The invention relates to a wastewater treatment process, in particular to a coking wastewater treatment process and coking wastewater treatment equipment. The process comprises the following steps: a, isolating oil floating on the surface of coking wastewater through horizontal flow; b, removing emulsive tar oil and part of COD and BOD5 in the coking wastewater by using a pressure dissolved-air flotation; c, balancing water quality and quantity of the treated coking wastewater; d, converting refractory polyaromatic hydrocarbons and heterocyclic compounds in the wastewater into simple low molecular organic acid compounds; e, retaining sludge and reflowing the wastewater; f, performing biological degradation of the organic matters in the wastewater and the removal of nitrogen and phosphorus from the wastewater and treating the wastewater by using a BSBR method; and g, finally, recovering the treated water. The process has the advantages of energy and space conservation, excellent wastewater treatment effect and the like.

Description

technical field [0001] The invention relates to a waste water treatment process, in particular to a coking waste water treatment process and equipment used therefor. Background technique [0002] Coking wastewater is produced in the process of high-temperature dry distillation of raw coal, gas purification and refining of chemical products. Its composition is complex, and the water quality changes with the composition of raw coal and coking process. The NMR chromatogram shows that coking wastewater contains dozens of inorganic and organic compounds. Among them, inorganic compounds are mainly a large amount of ammonia salts, thiocyanides, sulfides, cyanides, etc. In addition to phenols, organic compounds also include monocyclic and polycyclic aromatic compounds and heterocyclic compounds containing nitrogen, sulfur, and oxygen. , which seriously pollutes the environment and is a prominent environmental problem in the discharge of industrial wastewater. [0003] "Comprehensi...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/40C02F1/24C02F1/52C02F3/30
Inventor 王韶锋文秋红张海红丁建生
Owner UNIVERSTAR SCI & TECH SHENZHEN
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