Split type electro-Fenton device and method for efficiently processing coal chemical industry wastewater through device

A coal chemical wastewater, split technology, applied in natural water treatment, chemical instruments and methods, centrifugal separation water/sewage treatment, etc. Degradation and other problems to achieve the effect of reducing the content of pollutants and reducing the load

Active Publication Date: 2019-04-19
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Usually coal chemical wastewater pretreatment methods include coagulation method, supercritical oxidation method, ozonation method, ultrasonic method, Fenton oxidation method, chlorine dioxide method, incineration method, plasma treatment technology, etc. Although these methods plus subsequent biochemical treatment It can remove pollutants such as phenol and cyanide, but nitrogen-containing heterocycles and benzene-ring organics are difficult to degrade and fail to meet the reuse water standard

Method used

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  • Split type electro-Fenton device and method for efficiently processing coal chemical industry wastewater through device
  • Split type electro-Fenton device and method for efficiently processing coal chemical industry wastewater through device
  • Split type electro-Fenton device and method for efficiently processing coal chemical industry wastewater through device

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Effect test

Embodiment 1

[0026] Embodiment 1: as figure 1 , 2A split-type electric Fenton device shown includes a pretreatment tank 1, an electrolytic reaction tank 2, a sedimentation tank 3, a control device and a power supply device; the pretreatment tank 1 includes a filter chamber 10 and an oil and sulfur removal chamber 11, and the filter The cavity 10 and the oil and sulfur removal cavity 11 are arranged side by side in the pretreatment tank 1. The upper end of the filter cavity 10 is provided with a liquid inlet pipe. The inside of the filter cavity 10 is provided with a grid box 12. The grid box 12 is connected with the liquid inlet tube. A primary slag discharge pipe is provided on the grid box 12, and the primary slag discharge pipe runs through the pretreatment tank 1; a wedge-shaped block is provided at the bottom of the filter chamber 10, and a secondary slag discharge pipe is provided on the filter chamber 10, and the filter chamber 10 is provided with a Suction pump 13, a swirler 14 is...

Embodiment 2

[0035] Embodiment 2: as figure 1 , 2 A split-type electric Fenton device shown includes a pretreatment tank 1, an electrolytic reaction tank 2, a sedimentation tank 3, a control device and a power supply device; the pretreatment tank 1 includes a filter chamber 10 and an oil and sulfur removal chamber 11, and the filter The chamber 10 and the oil and sulfur removal chamber 11 are arranged side by side inside the pretreatment tank 1, the upper end of the filter chamber 10 is provided with a liquid inlet pipe, and the inside of the filter chamber 10 is provided with a grid box 12, which is connected to the liquid inlet pipe. The grid box 12 is provided with a primary slag discharge pipe, the primary slag discharge pipe runs through the pretreatment tank 1, a wedge-shaped block is provided at the bottom of the filter chamber 10, a secondary slag discharge pipe is provided on the filter chamber 10, and the filter chamber 10 is provided with a There is a suction pump 13, and a swi...

Embodiment 3

[0044] Embodiment 3: as figure 1 , 2A split-type electric Fenton device shown includes a pretreatment tank 1, an electrolytic reaction tank 2, a sedimentation tank 3, a control device and a power supply device; the pretreatment tank 1 includes a filter chamber 10 and an oil and sulfur removal chamber 11, and the filter The chamber 10 and the oil and sulfur removal chamber 11 are arranged side by side inside the pretreatment tank 1, the upper end of the filter chamber 10 is provided with a liquid inlet pipe, and the inside of the filter chamber 10 is provided with a grid box 12, which is connected to the liquid inlet pipe. The grid box 12 is provided with a primary slag discharge pipe, and the primary slag discharge pipe runs through the pretreatment tank 1. A main pipe 120 is installed horizontally inside the grid box 12, and the main pipe 120 is connected with the liquid inlet pipe. Branch pipes are vertically arranged at both ends of the main pipe 120. 121, each branch pipe...

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Abstract

The invention discloses a split type electro-Fenton device and a method for efficiently processing coal chemical industry wastewater through the device. The split type electro-Fenton device comprisesa preprocessing tank, an electrolytic reaction tank, a precipitation tank and a power unit. The preprocessing tank comprises a filtering tank and an oil and sulphur removal cavity. A hydrocyclone andan annular oil collecting pipe are arranged in the oil and sulphur removal cavity. The electrolytic reaction tank comprises an electrolysis cavity and a Fenton reaction cavity. An electrode plate is arranged in the electrolysis cavity. A pH detecting device and a stirring device are arranged in the Fenton reaction cavity. The power unit provides power for the hydrocyclone, the pH detecting deviceand the stirring device. The split type electro-Fenton device is simple in structure, high in organic matter mineralization degree, low in energy consumption and good in decomposition and removal effect on pyridine and heterocycle type organic pollutants.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a split-type electric Fenton device and a method for efficiently treating coal chemical wastewater. Background technique [0002] Coal chemical industry wastewater is mainly high-concentration gas washing wastewater, which contains a large amount of toxic and harmful substances such as phenol, cyanide, oil, ammonia nitrogen, etc. It is the most difficult and complicated wastewater to treat. The coal chemical industry wastewater mainly comes from the production water and steam condensation wastewater in the coke oven gas primary cooling and coking production process, which is a typical industrial wastewater containing refractory organic compounds. The water quality of coal chemical wastewater produced by different technological processes and production operation methods varies greatly. Facing the current national discharge standards for coal chemical wastewater, many ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F103/34C02F101/38
CPCC02F1/001C02F1/38C02F1/4672C02F1/56C02F9/00C02F2001/007C02F2101/38C02F2103/34C02F2209/06C02F2305/026
Inventor 吕路徐敬生张炜铭马亮潘丙才
Owner NANJING UNIV
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