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Oil-containing high-concentration phenol-ammonia wastewater treatment device and process

A waste water treatment, high concentration technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problem of high energy consumption, high input cost, oily and high phenolic ammonia wastewater treatment effect Poor, environmental secondary pollution and other problems, to achieve the effect of strong sewage adaptability, good economic and social benefits, and high recovery rate

Pending Publication Date: 2021-11-30
CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides an oil-containing high-concentration phenolic ammonia wastewater treatment device and process, aiming at the water quality characteristics of the coal chemical industry, through gravity and emulsification degreasing, complex extraction method extraction dephenolization, stripping deacidification Ammonia distillation and other methods can carry out deep recovery and treatment of oil, phenols and ammonia nitrogen in wastewater, which can solve the problem of poor treatment effect of oily and high phenolic ammonia wastewater in the prior art, which easily causes secondary pollution to the environment, operating energy consumption and input cost high problem

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  • Oil-containing high-concentration phenol-ammonia wastewater treatment device and process

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Embodiment

[0035] refer to figure 1 , a treatment device for oily and high-concentration phenol ammonia wastewater, comprising: an oil removal unit, a dephenolization unit, and a deacidification and ammonia distillation unit.

[0036] Wherein, the deoiling unit comprises a deoiling reaction tank 101, a deoiling waste water feed pump 102, a deoiling separation tank 103, a pre-extraction tank 106 and a deoiling water outlet tank 107 connected in sequence; the deoiling separation tank 103 is also connected with The light oil tank 104 is connected with the heavy oil tank 105; the pre-extraction tank 106 is also connected with the extraction layer treatment tank 108, the extraction layer reflux pump 109 and the oil removal reaction tank 101 in sequence.

[0037] The deoiling reaction tank 101 is provided with a demulsifier inlet 101-1 and an extraction layer reflux port 101-2; the deoiling separation tank 103 is provided with a tank top feed inlet 103-1, an upper light oil outlet 103-2, a bot...

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Abstract

The invention discloses an oil-containing high-concentration phenol-ammonia wastewater treatment device and process. The oil-containing high-concentration phenol-ammonia wastewater treatment device comprises an oil removal reaction tank, an oil removal separation tank, an extraction sieve-plate tower, a deacidification tower, a deamination tower and the like. Oil substances in wastewater are removed and recovered by adopting demulsification, gravity settling and pre-extraction methods, and various phenols and ammonia substances in water are effectively treated by combining a complexing extraction method and a stripping method, so that efficient removal and recovery of phenols and ammonia are realized, and cyclic utilization of an extraction agent is ensured. According to the process technology, the removal rate of petroleum substances in the wastewater is larger than 90%, the removal rate of total phenols is larger than 85%, the removal rate of NH4-N is larger than 95%, oil, phenol ammonia and acidic substances can be efficiently and economically removed and recycled through quality-divided advanced treatment of the wastewater, and the process technology is high in reliability and high in adaptability to sewage and has good economic benefits and social benefits.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry wastewater treatment, in particular to a treatment device and process for oil-containing high-concentration phenol ammonia wastewater. Background technique [0002] Coal chemical wastewater is generated during the conversion and chemical processing of coal, including coal low-temperature carbonization wastewater, coal coking wastewater, coal liquefaction wastewater and coal gasification wastewater. The typical characteristics of coal chemical wastewater are large water volume, complex water quality, and various organic substances in wastewater. Oily substances, phenolic substances, ammonia nitrogen, polycyclic aromatic hydrocarbons, oxygen-containing polycyclic and heterocyclic compounds are the main pollutants in coal chemical wastewater. Components; among them, oily substances, phenolic substances and ammonia nitrogen are typical representatives. The tar content in coal gas waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F101/16C02F101/32C02F101/34
CPCC02F9/00C02F1/40C02F2001/007C02F1/26C02F1/20C02F1/10C02F2101/16C02F2101/32C02F2101/345C02F2301/08
Inventor 倪嵩波李双涛黄益平倪泽雨朱昊刘汉飞李庆同李小东
Owner CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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