A Refractory Wastewater Treatment System

A wastewater treatment system and technology of the treatment system, applied in water/sewage treatment, multi-stage water/sewage treatment, neutralized water/sewage treatment, etc. and treatment cost increase, to achieve the effect of recycling, efficient and stable treatment, and reduction of treatment costs.

Active Publication Date: 2022-04-19
GUANGZHOU EP ENVIROMENTAL ENG
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned technical scheme, there are mainly the following disadvantages: 1. ozone is mainly realized by producing high-energy molecules such as hydroxyl radicals with OH in the printing and dyeing wastewater, but this reaction is greatly affected by the mass transfer effect of the gas-liquid phase, and the ozone in the wastewater Some macromolecular pollutants may hinder the contact of gas-liquid phase, so the treatment efficiency of this technical scheme is easily affected by the quality of wastewater; The overall removal effect is not stable, and may affect the effect of subsequent micro-electrolysis treatment; ③This technical solution requires continuous power supply to provide stable ozone input, and the system lacks a recycling energy system, resulting in increased energy consumption and treatment costs

Method used

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  • A Refractory Wastewater Treatment System
  • A Refractory Wastewater Treatment System
  • A Refractory Wastewater Treatment System

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1, refractory wastewater treatment system

[0041] The structure diagram of the processing system of the present invention is as follows: figure 1 As shown, it includes a regulating tank, a DBD plasma reactor 1, an iron-carbon micro-electrolysis reactor 2, a static sedimentation system 3, a photocatalytic waste water fuel cell system 4, and a nanofiltration-reverse osmosis double-membrane system 5 connected sequentially by pipelines. .

[0042] Wherein, the upper part of the DBD plasma reactor is provided with a water distribution layer, and the water distribution layer is provided with a water distribution hole 101, and the waste water enters the plasma reaction zone in the middle through the water distribution hole in the water distribution layer; The reaction area is equipped with multiple sets of high and low voltage electrode pairs separated by partition plates, forming multiple plasma reaction zones; the distance between the high and low voltage electr...

Embodiment 2

[0047] Embodiment two, refractory wastewater treatment process

[0048] Using the above system according to figure 2 The technological process treats the wastewater, and the treatment steps are:

[0049] S1, adding sulfuric acid to the waste water to adjust the pH to 4;

[0050] S2. Pass the waste water into the DBD plasma reactor for treatment. The working atmosphere in the DBD plasma reactor is air, the intake flow rate is controlled at 2L / min, and the discharge voltage is controlled at 10kv-30kv;

[0051] S3, passing the effluent of the operation S2 into the iron-carbon micro-electrolysis reactor to carry out the iron-carbon micro-electrolysis reaction; the weight ratio of the iron-based material and the carbon-based material in the iron-carbon micro-electrolysis reactor is 4:1;

[0052] S4. Static sedimentation treatment is performed on the effluent of the process S3, and the iron-carbon filler in the water is separated;

[0053] S5, passing the effluent of the process...

Embodiment 3

[0055] Embodiment three, refractory wastewater treatment process

[0056] The difference between the third embodiment and the second embodiment is that the step S1 adjusts the pH to 7, and the other parameters are the same as the second embodiment.

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Abstract

The invention discloses a refractory wastewater treatment system, which comprises a regulating pool, a DBD plasma reactor, an iron-carbon micro-electrolysis reactor, a static settling system, a photocatalytic wastewater fuel cell system and a nanofiltration system connected sequentially through pipelines. ‑Reverse osmosis double membrane system. The invention adopts low-temperature plasma combined with micro-electrolysis technology, through the treatment of low-temperature plasma, the subsequent micro-electrolysis treatment effect is strengthened, and the two have a synergistic effect; combined with photocatalytic battery system treatment, the refractory wastewater A variety of organic pollutants are effectively degraded, and the treatment is efficient and stable. At the same time, energy recycling is realized. The system is more energy-saving and the operating cost is low. The input amount of chemicals in the treatment system is low, which effectively reduces the treatment cost and does not produce secondary pollution at the same time.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a refractory waste water treatment system. Background technique [0002] Refractory wastewater mainly contains a large number of organic pollutants with low biodegradability, difficult biodegradation, and a half-life of 3 to 6 months, such as polychlorinated biphenyls, polycyclic aromatic hydrocarbons, halogenated hydrocarbons, phenols, aniline, and nitrobenzene , dyes, surfactants, polymer monomers, etc. [0003] Currently, refractory wastewater treatment processes mainly include physical, chemical and biological methods. The physical methods include adsorption, membrane separation, coagulation, sand filtration and other technologies, and the chemical methods mainly include micro-electrolysis, chemical precipitation, redox, persulfate and Fenton methods. Biological methods include aerobic-anaerobic methods, membrane bioreactors (MBR), and microbial im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08C02F101/30
CPCC02F9/00C02F1/30C02F1/66C02F2001/007C02F2101/30C02F1/46104C02F1/441C02F1/442
Inventor 周文栋李锐敬陈益成谢永新雒怀庆曹姝文黄睦凯许嘉辉杨炜雯刘晓永钟华东赖建平王志强贺玉平
Owner GUANGZHOU EP ENVIROMENTAL ENG
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