Process for treating epoxy resin production wastewater

An epoxy resin and waste water production technology, which is applied in natural water treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as inability to meet standards stably, water resource environmental pollution, etc., and achieve biochemical benefits The effect of processing, large processing capacity and low energy consumption

Active Publication Date: 2014-03-05
ANHUI GREEN TITAN ENVIRONMENTAL TECH
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Problems solved by technology

It belongs to high-concentration organic wastewater and high-salt wastewater. After treatment by traditional methods, it cannot meet the standard stably, and the pollution to water resources and environment is becoming more and more serious.

Method used

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  • Process for treating epoxy resin production wastewater

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Embodiment Construction

[0026] A treatment process for epoxy resin production waste water, comprising the following steps:

[0027] (1) The high-salt wastewater generated in the production of epoxy resin is intercepted by the first grid 1 to intercept the large debris in the wastewater, and the wastewater treated by the first grid 1 first enters the accident pool 2 (considering the accident situation For the treatment of production drainage and the situation when the influent concentration exceeds the design index, this wastewater treatment project has 2 accident pools, and the design effective volume is about 360m 3 , and then transported to the first collection pool 3 (the hydraulic adjustment time of the first collection pool 3 is 10 to 16 hours, and a submersible mixer is set in the first collection pool 3 to fully mix the wastewater in the first collection pool 3 and prevent solid particle deposition ), then lift the vortex-concave air flotation system 4, and add sodium hydroxide or calcium hydr...

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Abstract

The invention discloses a process for treating epoxy resin production wastewater. The process comprises: removing oils, suspended particle organic matters, a part of high polymers and toluene in high-salinity wastewater through a cavitation air flotation system, transforming macromolecular organic matters in the wastewater into micromolecular organic matters through an iron-carbon micro-electrolysis reactor, then, oxidizing non-biodegradable and non-chemical oxidable organic matters in the wastewater through a catalytic oxidation reactor under the action of an Fenton reagent, carrying out anaerobic biochemical treatment to reduce the chemical oxygen demand and the biochemical oxygen demand in the wastewater, carrying out aerobic biochemical treatment to anaerobically degrade a part of aerobic organic matters incapable of being degraded by aerobiont into biochemically degradable organic matters, finally, conveying the wastewater into a clean-water reservoir, filtering the wastewater through a multi-medium filter, and discharging the wastewater after meeting the standard. The process disclosed by the invention has the advantages of small energy consumption, high removal load and capability of recycling biogas as an energy source, and the purified water quality meets the emission standard so as to protect the ecological environment.

Description

[0001] technical field [0002] The invention relates to the field of industrial wastewater treatment, in particular to a treatment process for epoxy resin production wastewater. Background technique [0003] At present, the annual production capacity of epoxy resin in my country has reached 600,000 tons, and the wastewater produced is about 6.5 million m3. The average COD concentration of wastewater is about 15 g / L; the wastewater from epoxy resin production contains a large amount of inorganic salts, which interferes with biochemical treatment. The pollution prevention and control of high-concentration wastewater has always been a prominent environmental problem in this industry. [0004] Epoxy resin production wastewater mainly includes process condensation absorption wastewater (including ECH wastewater, toluene-containing wastewater), resin washing wastewater (including toluene and other organic matter), and replacement drainage of circulating cooling water systems. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/38
Inventor 姚明宁勇敏李双建胡召堂赵晓刚
Owner ANHUI GREEN TITAN ENVIRONMENTAL TECH
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