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High-efficiency purifying method of organic waste water

A high-efficiency technology for organic wastewater, applied in chemical instruments and methods, water/sewage multi-stage treatment, adsorption water/sewage treatment, etc., can solve problems such as easy blockage of adsorption columns, large amount of concentrated liquid water, and lack of reactors, etc., to achieve Improve the adsorption effect, reduce the adsorption time, and maintain the effect of membrane flux

Active Publication Date: 2010-02-24
YUE HAI ENVIRONMENTAL PROTECTION TECH CONSULTS SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although nanofiltration and reverse osmosis have good removal effects on dissolved organic matter and ions, the energy consumption is too high, and the required separation pressure is usually above 0.1MPa.
Moreover, the concentration of nanofiltration and reverse osmosis has a large amount of water, which is difficult to handle
However, the limitation of resin adsorption is that for small volume of wastewater, traditional adsorption columns can meet the requirements, but for the treatment of large volume of wastewater, there is a lack of suitable reactors.
The existing fixed bed reactor has the problem that the adsorption column is easy to block and harden
The water distribution is uneven, and the reactor is prone to short-flow phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] For a certain dye wastewater, the average chroma of the influent is 4000 times. After being pretreated and adjusted to be homogeneous, it enters the membrane resin reaction tank. Adsorption resin adopts MIEX resin, and the dosage is 20% of the effective volume of the membrane resin reactor. Membrane modules Hainan Lisheng Company produces hollow fiber membrane modules. Using aeration and stirring, the air-water ratio is 1:30. After aeration for 0.2h, start the suction pump to draw the wastewater through the membrane module. After treatment, the chromaticity of the effluent is 200 times on average.

Embodiment 2

[0024] The tail water of a certain textile wastewater enters the membrane resin reaction tank after being pretreated by coagulation and sedimentation. The average COD of influent water is 120mg / L, and the ZZ type flat membrane module produced by Shanghai Zizheng Company is used. The resin to be added is ND type resin, and the dosage is 15% of the effective volume of the reactor. The waste water is stirred by a hydraulic propeller. The stirring time is 0.5h, and then the suction pump is started to draw the waste water through the membrane module. The average COD after treatment was 80mg / L.

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Abstract

The invention discloses a high-efficiency purifying method of organic waste water. The waste water flows into a reaction tank after being pre-treated, a film assembly is arranged in the reaction tank;adsorbing resin is added in the reaction tank, the waste water is evenly mixed with the resin under stirring to be in a fluidization state, stirring is continuously carried out until the adsorbable materials in the waste water are adsorbed, and then the film assembly is started to filter and exhaust water. The method has excellent separation effect and high separation efficiency, and is suitablefor the treatment of a large amount of waste water with resolvable pollutants; and absorption and separation can be finished in a same space.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a method for purifying organic wastewater. Background technique [0002] Efficient reactions and separations are at the heart of water treatment. In recent years, separation technology mainly has two development directions, one is pure physical separation technology. At first, it was gravity separation, including sedimentation, air flotation, etc., and then membrane separation technology also gained considerable development and application. Membrane separation can achieve a better separation effect than gravity separation, and can also achieve better purification effects on tiny particles such as suspended solids, colloids, and bacteria. The second is physical and chemical separation technology, mainly adsorption separation technology. Including activated carbon adsorption, resin adsorption, etc. Among them, resin adsorption technology, in particular, has recent...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F1/28C02F1/42
Inventor 陆继来尹协东赵珊珊刘爱平邹敏夏明芳王惠中
Owner YUE HAI ENVIRONMENTAL PROTECTION TECH CONSULTS SERVICE CO LTD
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