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A method to realize zero discharge of coal chemical wastewater

A technology of coal chemical wastewater and zero discharge, applied in chemical instruments and methods, oxidized water/sewage treatment, multi-stage water treatment, etc., can solve the problems of secondary pollution and difficulty in recycling recyclables, and achieve uniqueness, Effect of reducing energy consumption and reducing environmental pressure

Active Publication Date: 2020-10-20
中洁蓝环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Combined with the deficiencies of the prior art, the present invention provides a method for realizing zero discharge of coal chemical industry wastewater and its implementation method, which effectively solves the problems of secondary pollution after treatment and discharge of coal chemical industry wastewater and difficulty in recycling recyclables

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  • A method to realize zero discharge of coal chemical wastewater
  • A method to realize zero discharge of coal chemical wastewater
  • A method to realize zero discharge of coal chemical wastewater

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Embodiment 1

[0031] Such as figure 1 as shown, figure 1 It shows the method for realizing zero discharge of coal chemical industry wastewater provided by the embodiment of the present invention. The system adopts a concentration system and a salt separation system. The salt separation system includes a monovalent salt evaporation device and a divalent salt evaporation device. The coal chemical industry wastewater is concentrated Under the joint action of the system and the salt separation system, the harmful pollutants in the water body are separated and recycled to realize the process of industrial zero discharge.

[0032] Such as figure 2 As shown, the concentration system includes a pretreatment stage, resin softening equipment and osmotic separation equipment. The pretreatment stage includes a high-efficiency sedimentation tank. The high-efficiency sedimentation tank is connected to the adjustment tank, oxidation tank and ultrafiltration equipment in turn. The pool is a PH adjustmen...

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Abstract

The invention discloses a coal-chemical engineering wastewater salt-extraction zero emission system. The system comprises a concentration system and a salt separation system, wherein the salt separation system comprises a monovalent salt evaporation device and a bivalent salt evaporation device; and by virtue of the coactions of the concentration system and the salt separation system, harmful pollutants in the coal-chemical engineering wastewater are separated and recycled so as to realize the industrial zero emission process. Useful substances can be completely separated and recycled, the environment stress is greatly alleviated, novel industrial raw materials are formed, and the industrial production cost is reduced. The invention further discloses a method for realizing coal-chemical engineering wastewater salt-extraction zero emission. The method comprises the following steps: wastewater pretreatment, concentration of raw liquid, namely evaporation of salts in the raw liquid. According to the repeated recycling process, recyclable materials can be completely recycled, recycling during solid emission and uniqueness of solution discharge can be ensured, and the condition that effluents reaching the standard are repeatedly superposed and reacted again to produce novel pollutants can be avoided.

Description

technical field [0001] The invention relates to the pollution-free discharge technology for the recovery and treatment of coal chemical wastewater in the field of environmental protection, in particular to a method for realizing zero discharge of coal chemical wastewater. Background technique [0002] Environmental pollution is already one of the major problems in today's society, mainly including domestic waste pollution and industrial sewage pollution, especially industrial sewage. Wastewater from industrial production contains a large amount of organic matter, inorganic matter, metals, and industrial salts. Its direct emissions put enormous pressure on the environment. [0003] Most of today's industrial wastewater treatment is to add chemical agents, precipitate metals, deposit and separate, then discharge the water body, and directly recycle the solids into cement raw materials. This method can meet the industrial wastewater discharge standards at the beginning of disch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10
CPCC02F1/001C02F1/04C02F1/08C02F1/20C02F1/38C02F1/42C02F1/44C02F1/441C02F1/442C02F1/444C02F1/52C02F1/66C02F1/78C02F9/00C02F2301/08
Inventor 李亮亮李胜裴程林
Owner 中洁蓝环保科技有限公司
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