Device and method for treating high density organic waste water by multiphase photocatalysis combined film bioreactor

A membrane bioreactor, bioreactor technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of high treatment cost, achieve low operating cost, application Wide range and small equipment investment

Inactive Publication Date: 2014-03-26
WUHAN HONGAO GREEN ENERGY ENG
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Effectively solve the problem of high-concentration organic amine wastewater treatment, without

Method used

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  • Device and method for treating high density organic waste water by multiphase photocatalysis combined film bioreactor
  • Device and method for treating high density organic waste water by multiphase photocatalysis combined film bioreactor
  • Device and method for treating high density organic waste water by multiphase photocatalysis combined film bioreactor

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Embodiment

[0045] A certain liquid crystal production wastewater contains various organic molecules such as tetrahydrofuran, ethanol, dichloroethane, petroleum ether, and glacial acetic acid. The molecular structure is relatively stable, and it is a kind of high-concentration organic wastewater that is difficult to degrade. The water quality and quantity are as follows:

[0046] Production wastewater volume: 40m 3 / h.

[0047] Waste water quality: COD=10000mg / L, BOD 5 =3000mg / L, PH=6~8, main organic content fraction (mass): tetrahydrofuran 6.67%, ethanol 1.21%, dichloromethane 0.09%, petroleum ether 0.02%, 1,4 hydroquinone 0.01%, etc.

[0048] After the above waste water is adjusted through the mixing pool, it is pumped to the integrated high-efficiency filter to remove turbidity, and then pumped to the first-level photocatalyst reactor by metering, adding H 2 o 2 400kg / h, under the action of TIO2 catalyst (containing Pt1%) and ultraviolet light (wavelength 387.5nm), 84% of carbon-c...

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Abstract

A device for treating high density organic waste water by a multiphase photocatalysis combined film bioreactor, comprises a filter, a primary photocatalyst reactor, a secondary photocatalyst reactor, an acidifying hydrolysis pool, and a film bioreactor; wherein a pipeline is communicated among the filter, the primary photocatalyst reactor, the secondary photocatalyst reactor, the acidifying hydrolysis pool, and the film bioreactor. High density organic matters, under action of ultraviolet light and a catalyst, can be rapidly degraded to be innocuous and unpoisonous small molecules such as CO2, H2O, etc. The device and the method have advantages of: (1) fast catalytic reaction speed, stay time of organic sewage in a photocatalytic reactor can be controlled in 4h; (2) non-selectivity degradation: comprising difficultly-degraded organic matters like chlorinated organic compounds and polycyclic aromatic hydrocarbons; (3) no secondary pollution: the organic matters are thoroughly differentiated and degraded to be harmless substances such as CO2, H2O, etc.; (4) wide application range: the device and the method can almost be applied on all organic sewage, such as papermaking waste water, printing waste water, pesticide waste water, etc., and (5) combination with an MBR film bioreactor technology, small system equipment investment and low operation cost.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a device and method for treating high-concentration organic wastewater with a heterogeneous photocatalysis combined with a membrane bioreactor. Background technique [0002] The organic amine wastewater produced in chemical, pharmaceutical, liquid crystal and other industrial processes contains a large amount of methylamine, methanol, epichlorohydrin, toluene, phenol, sodium carbonate, sodium methoxide and other dozens of organic compounds and salts. Such high-concentration organic wastewater has always been a long-standing problem in the field of water treatment. After years of exploration by water treatment workers, the main methods currently used in industry are aeration stripping, distillation and pretreatment methods. However, although the aeration stripping method can effectively remove COD, it will cause secondary pollution of the environment. Simply put, it ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 谭德军叶琪李俊佼罗海玲
Owner WUHAN HONGAO GREEN ENERGY ENG
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