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Microelectrolytic coupling anoxic bioreacting device and method for treating coal-to-gas wastewater phenolic substance by utilizing device

A technology of biological reaction device and biological reaction tank, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. The problems of large land area and easy passivation of iron-carbon fillers can achieve the effect of not easy to harden, reduce floor space, and short hydraulic retention time.

Inactive Publication Date: 2018-01-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low treatment efficiency of phenolic substances in coal gas waste water by a single biological process, poor system stability, complex micro-electrolysis and biological coupling process, large area of ​​treatment equipment, and easy passivation of iron-carbon fillers To solve the problem, a micro-electrolysis coupled anoxic biological reaction device and a method for using the device to treat phenolic substances in coal-gas wastewater

Method used

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  • Microelectrolytic coupling anoxic bioreacting device and method for treating coal-to-gas wastewater phenolic substance by utilizing device
  • Microelectrolytic coupling anoxic bioreacting device and method for treating coal-to-gas wastewater phenolic substance by utilizing device
  • Microelectrolytic coupling anoxic bioreacting device and method for treating coal-to-gas wastewater phenolic substance by utilizing device

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specific Embodiment approach 1

[0016] Embodiment 1: A micro-electrolysis coupled anoxic biological reaction device in this embodiment includes an anoxic biological reaction tank 10, a mechanical stirring device 2, a microporous aeration device 6 and an aeration pump 7; wherein the anoxic biological reaction tank 10 The grid 5 is divided into 3 baffled series reaction zones 9, the top of each reaction zone 9 is provided with a mechanical stirring device 2, the middle part is provided with an iron-carbon filler support grid, and the bottom is provided with a microporous gas blasting device 6, a microporous The detonation device 6 is connected with the aeration pump 7 through the aeration pipe; the anoxic biological reaction tank 10 is provided with a water inlet pipe 1 at the top and a water outlet pipe 8 at the bottom.

[0017] The beneficial effects of this embodiment are as follows: (1) The sewage treatment efficiency is high, the COD removal rate is as high as 93%, the total phenol removal rate is as high ...

specific Embodiment approach 2

[0021] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the iron-carbon filler support grid is composed of an iron-carbon supporting steel mesh 3 and a composite iron-carbon micro-electrolytic filler 4, and the others are the same as those of Embodiment 1.

specific Embodiment approach 3

[0022] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the diameter of the iron-iron-carbon supporting steel mesh 3 is 5 mm, and the others are the same as Embodiment 1 or 2.

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Abstract

The invention relates to a microelectrolytic coupling anoxic bioreacting device and a method for treating a coal-to-gas wastewater phenolic substance by utilizing the device, and aims at solving the problems of low treatment efficiency of an existing coal-to-gas wastewater phenolic substance, large area occupied by a treatment device and high possibility of iron-carbon packing passivation. The device comprises an anoxic bioreacting pool, a mechanical stirring device, a microporous aerating device and an aeration pump. The method comprises the following steps: adjusting pre-treated coal-to-gaswastewater; then transferring into the microelectrolytic coupling anoxic bioreacting device; adding activated sludge inoculating liquid; starting the mechanical stirring device and the microporous aerating device; and controlling the dissolved oxygen concentration. The method is high in sewage treatment efficiency; the COD removing rate is up to 93%; the total phenol removing rate is up to 95%; the volatile penol removing rate is up to 100%. The method is applicable to the technical field of wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a micro-electrolysis coupled anoxic biological reaction device and a method for treating phenolic substances in coal-to-gas wastewater by utilizing the device. Background technique [0002] Phenol-containing wastewater is one of the most harmful and polluted industrial wastewaters in the world today, and it is the main source of phenolic pollution in environmental water bodies. Coal-to-gas wastewater is a typical industrial wastewater with high concentration of phenol, which is refractory to degradation and toxic. Its complex phenolic compounds have become the organic pollutants that are preferentially treated and controlled in the field of coal-to-gas wastewater treatment at home and abroad. [0003] At present, activated sludge process, anaerobic process and anaerobic-anoxic-aerobic combined process are mainly used for the degradation of phenolic substa...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/34
Inventor 韩洪军麻微微徐春艳朱昊李琨
Owner HARBIN INST OF TECH
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