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A method and device for treating high-concentration wastewater from coal chemical industry

A high-concentration wastewater and treatment device technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high membrane fouling and low flux, and achieve membrane cleaning Low frequency, reduced membrane fouling, good system stability

Active Publication Date: 2016-08-17
GO HIGHER ENVIRONMENT GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a method and device for the treatment of high-concentration wastewater from the coal chemical industry, which solves the problems of low flux and high membrane pollution in the prior art when MBR is used for the treatment of wastewater from the coal chemical industry

Method used

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  • A method and device for treating high-concentration wastewater from coal chemical industry

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Embodiment 1

[0078] A coal chemical process wastewater is treated by the method and device for the treatment of high-concentration coal chemical wastewater according to the present invention, and the treatment capacity is 1m 3 / h, raw water COD≥10000mg / L, ammonia nitrogen≥100mg / L, oil≥100mg / L, phenol≥100mg / L, water temperature 30°C~40°C. Effluent COD≤5mg / L, ammonia nitrogen≤0.5mg / L, oil≤1mg / L, phenol≤0.5mg / L, pH=6~9. Among them, the aerobic MBR device 8 was operated for 6 months, the transmembrane pressure (TMP) rose from 2kPa to 15kPa, and the membrane pressure increased steadily, and the aerobic MBR device 8 was continuously operated for 6 months without cleaning.

Embodiment 2

[0080] Wastewater from a coal-to-liquid synthetic oil section is treated by the method and device for treating high-concentration wastewater from coal chemical industry according to the present invention, and the treatment capacity is 0.3m 3 / h, raw water COD≥8000mg / L, ammonia nitrogen≥120mg / L, oil≥50mg / L, phenol≥100mg / L, water temperature 30°C~40°C. Effluent COD≤4mg / L, ammonia nitrogen≤0.5mg / L, oil≤1mg / L, phenol≤0.5mg / L, pH=6~9. Among them, the aerobic MBR device 8 was operated for 6 months, the transmembrane pressure (TMP) rose from 2kPa to 15kPa, and the membrane pressure increased steadily, and the aerobic MBR device 8 was continuously operated for 6 months without cleaning.

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Abstract

The invention provides a coal chemical industry high-concentration wastewater treatment method and an apparatus which can solve the problems of low flux and high membrane pollution when an MBR (membrane bioreactor) is used for coal chemical industry wastewater treatment in the prior art. The coal chemical industry high-concentration wastewater treatment apparatus comprises an oil separation device, a flocculation reaction device communicated with the oil separation device, an ultra-micro air flotation device communicated with the flocculation reaction device, an advanced oxidation device communicated with the ultra-micro air flotation device, a hydrolysis and acidification device communicated with the advanced oxidation device, a denitrification device communicated with the hydrolysis and acidification device, an anoxic device communicated with the denitrification device, and an aerobic MBR device which comprises a plurality of MBR membranes arranged in the aerobic MBR device and is communicated with the anoxic device. The coal chemical industry high-concentration wastewater treatment method and the device provided by the invention have the beneficial effects that the pretreatment is complete, the subsequent treatment difficulty is low, and the biochemical treatment effect is ensured so as to be favorable for reducing membrane pollution; in addition, the cleaning frequency of the membranes is low and the service life is long; and furthermore, the MBR outlet water is stable, suspended matters are avoided, and the deep treatment effect can be further ensured.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a method and a device for treating high-concentration wastewater of coal chemical industry. Background technique [0002] Globally, coal is more plentiful and relatively cheap than oil and natural gas, and oil shortages are growing. Some coal-rich countries such as the United States, Australia, India, Germany, etc., are stepping up research or development of coal chemical projects. In recent years, my country has also researched and developed new coal chemical technology, established a number of coal chemical demonstration projects, and built the world's largest direct coal to oil project. However, for coal chemical projects in areas rich in coal resources but short of water resources, in the case of large water consumption and sewage discharge, there is an urgent need for a feasible high-concentration coal chemical wastewater treatment process to ensure the local economic an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 陈福泰马竞男郝福锦
Owner GO HIGHER ENVIRONMENT GRP CO LTD
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