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Wastewater treatment system and treatment method based on boron-doped diamond film

A sewage treatment system, diamond membrane technology, applied in water/sewage treatment, biological water/sewage treatment, flotation water/sewage treatment, etc. Green environmental protection and efficient advanced sewage treatment, improve operability, and avoid the effect of chemical injection

Pending Publication Date: 2019-09-06
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, domestic sewage can be well treated by biochemical methods, but industrial wastewater, especially in chemical, pharmaceutical, paper, printing and dyeing, pesticide and petroleum industries, has complex components and high COD (chemical oxygen demand) values ​​(> 10000mg / L), high salt content, high chroma, low biodegradability, difficult to degrade by conventional biochemical methods
The traditional sewage treatment technology needs to artificially add chemical reagents, such as adding ozone, hydrogen peroxide, mercury sulfate and other chemical reagents, which may easily cause secondary pollution, and the treatment effect on higher concentrations of organic matter or more toxic pollutants is not good, and it is difficult to meet environmental protection requirements , and produce a large amount of solid waste, which will cause secondary pollution

Method used

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  • Wastewater treatment system and treatment method based on boron-doped diamond film
  • Wastewater treatment system and treatment method based on boron-doped diamond film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 The sewage treatment system based on the boron-doped diamond film shown includes a thick and thin grid tank, an aeration tank, a primary sedimentation tank, a boron-doped diamond film pretreatment tank, an acid-base adjustment tank, and a secondary sedimentation tank connected sequentially by pipelines. , membrane bioreactor, hollow fiber ultrafiltration tank, boron-doped diamond film advanced treatment tank, boron-doped diamond film pretreatment tank and boron-doped diamond film advanced treatment tank use boron-doped diamond film as the anode.

[0028] The anode area in the boron-doped diamond film pretreatment pool is 0.5m 2 , the electrode spacing is 2mm, the current density is 0.2Acm -2 , the operating temperature of the system is 30°C. The effluent COD is 150mg / L.

[0029] The flocculant used in the primary settling tank is polyferric sulfate. First, the polyferric sulfate is made into a solution with a mass fraction of 10-30%, and then 30-50g ...

Embodiment 2

[0032] Such as figure 1 The sewage treatment system based on the boron-doped diamond film shown includes a thick and thin grid tank, an aeration tank, a primary sedimentation tank, a boron-doped diamond film pretreatment tank, an acid-base adjustment tank, and a secondary sedimentation tank connected sequentially by pipelines. , membrane bioreactor, hollow fiber ultrafiltration tank, boron-doped diamond film advanced treatment tank, boron-doped diamond film pretreatment tank and boron-doped diamond film advanced treatment tank use boron-doped diamond film as the anode.

[0033] The anode area in the boron-doped diamond film pretreatment pool is 1m 2 , the electrode spacing is 5mm, the current density is 0.2Acm -2 , the operating temperature of the system is 32°C. The effluent COD is 500mg / L.

[0034] The flocculant used in the primary settling tank is polyferric sulfate. First, the polyferric sulfate is made into a solution with a mass fraction of 10-30%, and then 30-50g of...

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PUM

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Abstract

The invention discloses a sewage treatment system and treatment method based on a boron-doped diamond film. The sewage treatment system comprises a coarse and fine grid tank, an aeration tank, a primary sedimentation tank and a boron-doped diamond film pretreatment tank, an acid-base regulating tank, a secondary sedimentation tank, a membrane bioreactor, a hollow fiber ultrafiltration tank and a boron-doped diamond film deep treatment tank which are all connected in series through a pipeline, wherein the boron-doped diamond film is adopted as an anode by the boron-doped diamond film pretreatment tank and the boron-doped diamond film deep treatment tank. By means of the sewage treatment system and treatment method, hydroxy radicals, ozone and other oxidants are generated through an electrochemical advanced oxidation method to effectively degrade sewage with high concentration, high toxicity and high COD and rapidly degrade sewage with low concentration and low COD in an environmentallyfriendly way separately.

Description

technical field [0001] The invention relates to a sewage treatment system and method, in particular to a sewage treatment system and treatment method based on a boron-doped diamond film. Background technique [0002] With the rapid development of the economy and the continuous deepening of industrialization and urbanization, people's demand for water resources is increasing, and water pollution is becoming more and more serious. [0003] Sewage is mainly divided into domestic sewage and industrial sewage. Generally, domestic sewage can be well treated by biochemical methods, but industrial wastewater, especially in chemical, pharmaceutical, paper, printing and dyeing, pesticide and petroleum industries, has complex components and high COD (chemical oxygen demand) values ​​(> 10000mg / L), high salt content, high chroma, low biodegradability, difficult to degrade by conventional biochemical methods. The traditional sewage treatment technology needs to artificially add chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/24C02F1/444C02F1/4672C02F1/5236C02F1/5245C02F1/5281C02F1/56C02F1/66C02F3/00C02F9/00C02F2301/08C02F2303/04
Inventor 盖志刚郭风祥邱慧敏禹定峰柴旭王宜豹胡鼎孙小玲李辉
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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