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Water treatment system and method for micro-polluted source water

A water treatment system and source water technology, applied in the field of water treatment, can solve the problems of increasing operating costs and water production costs, shortening the service life of ultrafiltration membranes, and increasing transmembrane pressure differences, so as to improve the coagulation effect and membrane pass through. The effect of low volume attenuation speed and small operating pressure loss

Pending Publication Date: 2019-06-14
WUHAN POLYTECHNIC UNIVERSITY
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Problems solved by technology

However, when ultrafiltration technology is used alone, due to membrane fouling, it will cause a decrease in flux and an increase in transmembrane pressure difference, shortening the service life of ultrafiltration membranes, increasing operating costs and water production costs, and limiting its development.

Method used

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  • Water treatment system and method for micro-polluted source water

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Embodiment 1

[0058] Such as figure 1 As shown, this embodiment provides a water treatment system for slightly polluted source water, the water treatment system includes: a first chemical coagulation device, a second chemical coagulation device and an ultrafiltration membrane separation device; wherein, the first The chemical coagulation device includes: a first coagulation tank 2, a first coagulant dosing unit 3 and a first stirring unit 4; the second chemical coagulation device includes: a second coagulation tank 6, a second coagulation tank Agent dosing unit 7 and second stirring unit 8; The ultrafiltration membrane separation device includes: submerged ultrafiltration membrane pool 10 and ultrafiltration membrane module 11;

[0059] Wherein, the output end of the first delivery pipe 1 is connected to the water inlet of the first coagulation tank 2, and the first coagulant dosing unit 3 is arranged on the upper part of the first coagulation tank 2, and the first coagulant The dosing uni...

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Abstract

The invention discloses a water treatment system and method for micro-polluted source water. The water treatment system comprises a first chemical coagulation device, a second chemical coagulation device and an ultrafiltration membrane separation device, wherein the first chemical coagulation device communicates with the second chemical coagulation device, and the second chemical coagulation device communicates with the ultrafiltration film separation device. The water treatment method includes the steps that by optimizing coagulation and cooperating an ultrafiltration membrane separation process, pollution substances in the micro-polluted source water are removed, and thus treated water outlet can meet the requirements of the <hygienic standard for drinking water> (GB5749-2006) in China.The process structure is simple, the water outlet quality is stable, the operating pressure loss of a membrane device is small, the attenuation speed of the membrane flux is low, and the backwashing frequency of membrane assemblies is low.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and more specifically relates to a water treatment system and a water treatment method for slightly polluted source water. Background technique [0002] If the sewage from industrial production and agricultural activities cannot be effectively treated, it will be directly discharged into natural waters, which will cause pollution of water sources, which is the main cause of micro-pollution of drinking water sources. In different regions of my country, due to differences in natural and social environments, the pollution of water sources presents different characteristics, and the problems of water quality are also different. Generally speaking, slightly polluted water is mainly polluted by natural organic matter and trace refractory organic matter. Although the total amount of pollutants in slightly polluted source water is low, the pollutants are of various types and complex in nature, a...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/30
Inventor 贺杏华张荣堂刘杰胜
Owner WUHAN POLYTECHNIC UNIVERSITY
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