Method and device for treating high-salt content water by hydro-power molecular membrane

A technology of molecular membrane and high salt water, which is applied in the direction of heating water/sewage treatment, osmosis/dialysis water/sewage treatment, etc., can solve the constraints of large-scale engineering application of membrane distillation, no high-quality products have been launched, and membrane wetting cannot be solved and other problems, to achieve the effect of excellent and stable effluent water quality, good effect and long service life

Inactive Publication Date: 2012-04-04
GO HIGHER ENVIRONMENT GRP CO LTD
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Although it can improve the flux of membrane distillation, it still cannot solve the current situation of membrane wetting
The use of hydrophobic membrane materials for membrane distillation has been researched, but no high-quality products have been launched; moreover, the hydrophobic membranes used in the membrane distillation process are hollow fiber membranes, which are prone to broken filaments under high temperature and high salt conditions. These factors Restricts the large-scale engineering application of membrane distillation in high brine treatment

Method used

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  • Method and device for treating high-salt content water by hydro-power molecular membrane
  • Method and device for treating high-salt content water by hydro-power molecular membrane

Examples

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example 1

[0029] Example 1: The concentrated brine produced by the RO system from the sewage source, the water quality conditions are: conductivity 100000μs / cm, chromaticity 80. The device for treating high brine with hydroelectric molecular membrane is used to treat wastewater. The membrane group adopts a tubular hydroelectric molecular membrane membrane, the temperature of the feed liquid is 40°C, and the vacuum degree is -0.1MPa. The final effluent conductivity is 53μs / cm, no color, the desalination rate reaches 99.9%, the chroma removal rate is 100%, and the average flux of membrane produced water has been maintained at 10L / m 2 .h;

example 2

[0030] Example 2: The source of sewage is the effluent of the biochemical system of a coking plant, and the water quality condition is: COD Cr The content is 680mg / L, the SS is 600mg / L, the conductivity is 8900μs / cm, and the chromaticity is 500; the device for treating high salt water with hydroelectric molecular membrane is used to treat the wastewater. The inlet water temperature is 80°C and the vacuum degree is -0.1MPa. Final effluent conductivity is 90μs / cm, COD Cr 50mg / L, no color, the total nitrogen concentration is less than 10mg / L, that is, the desalination rate is 99%, 100% removes chroma, and reaches the industry’s first-class discharge standard A. The average flux of membrane-produced water has been maintained at 100L / m 2 .h.

example 3

[0031]Example 3: The source of sewage is seawater, and the water quality conditions are: conductivity 32000μs / cm, chromaticity 30. The device for treating high brine with hydroelectric molecular membrane is used to treat wastewater. The membrane group adopts 14 pipe-type hydroelectric molecular membrane membranes. The feed water temperature is 60°C and the vacuum degree is -0.1MPa. The final conductivity of the effluent is 3.0μs / cm, no color, the desalination rate reaches 99.99%, 100% removes the color, and the average flux of the membrane produced water has been maintained at 25L / m 2 .h;

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Abstract

The invention discloses a method and a device for treating high-salt content water by a hydro-power molecular membrane. The device orderly comprises a material liquid tank, a water circulating pump, a membrane tank, a condenser, a product water tank and a vacuum pump. The material liquid tank is provided with an electric heating system and a temperature sensor. The device and the method adopt a core technology of a hydro-power molecular membrane, realize excellent and stable product water quality and a high salt rejection rate reaching 99.99%, have good COD and color removal effects, reduce energy consumption, wherein power consumption is in a range of 3 to 6KWh/m<3>, prolong a hydro-power molecular membrane service life, greatly resist pollution, realize a high water production flux of 10 to 100L/m<2>*h, solve the problems of hydrophobic membrane aperture wetting and wire fracture in membrane distillation, and adopt heat sources such as industrial waste heat, underground heat, solar energy and the like so that high-efficiency and energy-saving high-salt content water treatment is realized.

Description

technical field [0001] The invention relates to a method and a device for treating high brine, in particular to a method and a device for treating high brine with membrane technology. Background technique [0002] The pollution of water resources is also a problem facing our country and the world. At present, nearly half of the water sources in the Taihu Lake system in the Yangtze River region, the rivers in the Northwest, the Huaihe River region, the Yellow River region, and the Haihe River region have substandard water quality. Qualified water sources account for one-third, and 190 million people in my country have drinking water with excessive levels of harmful substances. The shortage of water resources and the deterioration of water ecological environment have become the bottleneck restricting the sustainable development of China's society and economy. [0003] High salt water contains a large amount of salt, which will cause serious pollution to the water body if it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/44C02F1/02
Inventor 陈福泰郝福锦杜接弟
Owner GO HIGHER ENVIRONMENT GRP CO LTD
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