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Method and device for removing pollutants in water by freezing precipitation and pressure reverse osmosis

A technology for removing water and pollutants, which is applied in the direction of chilled water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc. It can solve the problems of illegal drainage, insufficient investment, high cost, etc., and achieve high purification purity and cost reduction High, cost-effective effect

Active Publication Date: 2018-10-09
CHINA UNIV OF MINING & TECH
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Problems solved by technology

However, my country currently has the following problems in sewage treatment: (1) The investment in infrastructure construction is insufficient, and the treatment capacity is limited, causing serious environmental pollution problems; (2) The urban sewage treatment technology is relatively backward, and some chemical treatment measures have secondary Pollution risk; (3) The urban sewage treatment technology and sewage treatment system are complex; (4) The sludge is not effectively treated, causing secondary pollution; (5) The cost is high, and the scene of illegal discharge is serious

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  • Method and device for removing pollutants in water by freezing precipitation and pressure reverse osmosis

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the embodiment in the accompanying drawings:

[0019] The device for freezing, separating out and pressure reverse osmosis to remove pollutants in water of the present invention mainly consists of a polluted water container 2, a layered container 12, a temperature control system, a reclaimed water container 17, and a high-concentration waste liquid container 21; the polluted water container 2. A polluted water conduit 3 connected to the water inlet of the stratified container 12 is inserted in it, and an on-off valve 4 is arranged on the polluted water conduit 3 . Described temperature control system comprises the temperature control cold plate 5 that is located at layered container 12 tops, low-temperature alcohol liquid supply pipe 6, low-temperature alcohol liquid return pipe 7 and temperature control cold bath 8, low-temperature alcohol liquid supply pipe 6 and low-temperature alcohol One end ...

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Abstract

The invention discloses a method and a device for removing pollutants in water by freezing precipitation and pressure reverse osmosis. On the basis of a freezing purification principle and a pressurereverse osmosis principle of precipitating the pollutants by water freezing in the sewage freezing process, proper freezing temperature is selected and proper freezing rate is controlled by adopting atop-bottom one-way freezing mode according to the freezing precipitation characteristic of the pollutants; the pollutants are gradually removed by freezing from top to bottom, and finally bottom residual high-concentration pollutants are centrally and chemically treated, so that adverse influence of high cost, secondary pollution hazards and the like of a current chemical treatment mode is avoided. The technology fully utilizes the function of precipitating impurities by water freezing and phase change, and cooling energy only needs to be inputted into a solution. The method and the device have the advantages of high purification degree, no pollution, simplicity and convenience in operation, high cost performance and the like.

Description

technical field [0001] The invention relates to a method and a device for removing pollutants in water, in particular to a method and a device for removing pollutants in water by freezing precipitation pressure reverse osmosis suitable for comprehensive treatment of civil domestic and industrial sewage. technical background [0002] With the continuous expansion of the city scale and the continuous improvement of the level of industrialization, the total water consumption of human production and life continues to increase, and the discharge of domestic and industrial sewage is on the rise year by year. However, my country currently has the following problems in sewage treatment: (1) The investment in infrastructure construction is insufficient, and the treatment capacity is limited, causing serious environmental pollution problems; (2) The urban sewage treatment technology is relatively backward, and some chemical treatment measures have secondary Pollution risk; (3) The urba...

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Application Information

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IPC IPC(8): C02F9/08
CPCC02F1/22C02F1/441
Inventor 王建州周国庆陈拓刘书幸梁恒昌赵光思王涛朱启银李亭酒逢源周恒宋丹张浩轩
Owner CHINA UNIV OF MINING & TECH
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