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Treatment method for high-concentration wastewater difficult to degrade

A wastewater treatment and refractory technology, applied in water/sewage treatment, water treatment parameter control, special compound water treatment, etc., can solve the problems of secondary pollution and low efficiency, and achieve improved biodegradability, high flocculation activity, The effect of reducing toxic effects

Inactive Publication Date: 2016-03-23
YIXING YONGCHUANG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of low efficiency and secondary pollution caused by the existing wastewater advanced treatment process, and provide a high-concentration, refractory wastewater treatment method

Method used

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  • Treatment method for high-concentration wastewater difficult to degrade

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Embodiment

[0060] like figure 1 As shown, a high-concentration, refractory wastewater treatment method includes the following steps:

[0061] 1. Pretreatment process

[0062] 1) After the production wastewater or accident wastewater is collected, it is introduced into the wastewater adjustment tank, and the homogenization and uniformity adjustment are performed in the wastewater adjustment tank, while stirring to prevent the precipitation of suspended particles and impurities, and then the wastewater is lifted into the micro-electrolysis reactor;

[0063] 2) In the micro-electrolysis reactor, the wastewater passes through the iron-carbon filter layer to remove CODcr and chroma, and at the same time, the heterocyclic substances are opened and broken to improve the biodegradability of the wastewater, and then enter the Fenton reactor;

[0064] In addition, divalent and ferric ions are good flocculants, especially nascent ferrous ions have higher adsorption-flocculation activity, adjusting...

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Abstract

The invention discloses a treatment method for high-concentration wastewater difficult to degrade. At the pretreatment stage, various pollution substances in wastewater are greatly degraded through the microelectrolysis reactor, Fenton reactor and multifunctional wastewater treatment machine combined mode, and meanwhile biodegradability of wastewater is regulated; at the biodegradation stage, most of pollution substances in wastewater can be treated and degraded by adopting the A2O and AO treatment process, conducting anaerobic, hypoxia and aerobiotic one-time biochemical and anaerobic and aerobiotic two-time biochemical treatment on wastewater and conducting ceaseless closed-loop inner circulation in the biochemical interior; at the after-treatment stage, by means of the multifunctional biological filter, multi-medium filtration and biological activated carbon adsorption combined treatment process, remaining pollution substances in wastewater can be degraded to the maximum extent or degraded after being adsorbed, and finally discharge water reaches the qualified emission target. The method is wide in application range, good in treatment effect and low in running cost, physical and biological treatment of high-concentration wastewater difficult to degrade is enhanced, and pollution of wastewater to the environment is reduced.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a treatment method for high-concentration, refractory waste water. Background technique [0002] In the chemical industry production wastewater, there will be a large amount of toxic and refractory organic substances, such as phenol, nitrobenzene, halogenated, azo-containing and nitroaromatic compounds, etc. The discharge of chemical wastewater into rivers not only seriously pollutes water sources, but also causes a lot of waste of resources. For example, the paper industry, which is traditionally a large water user, is one of the important sources of water pollution. The discharge of wastewater and COD in the paper industry ranks first in the discharge of industrial wastewater in my country. The pollution of the water environment by the paper industry is very serious. Toxic and refractory compounds contained in chemical wastewater enter the natural environment through various channe...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/34C02F101/38C02F101/30
CPCC02F9/00C02F1/4672C02F1/4678C02F1/5245C02F1/5263C02F1/66C02F1/725C02F3/00C02F3/30C02F2101/30C02F2101/345C02F2101/38C02F2209/08C02F2305/023C02F2305/026
Inventor 周宇捷
Owner YIXING YONGCHUANG ENVIRONMENTAL PROTECTION TECH CO LTD
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