Gravity driving hydrophilic membrane apparatus for treating algae-containing water and membrane cleaning method

A gravity-driven, hydrophilic membrane technology, applied in water/sewage treatment, water/sludge/sewage treatment, osmotic/dialysis water/sewage treatment, etc. Easy to operate and reduce energy consumption

Active Publication Date: 2018-09-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a gravity-driven hydrophilic membrane device for algae-containing water treatment and Membrane cleaning method

Method used

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  • Gravity driving hydrophilic membrane apparatus for treating algae-containing water and membrane cleaning method
  • Gravity driving hydrophilic membrane apparatus for treating algae-containing water and membrane cleaning method
  • Gravity driving hydrophilic membrane apparatus for treating algae-containing water and membrane cleaning method

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Experimental program
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specific Embodiment approach 1

[0033] Specific implementation mode 1: Combination figure 1 This embodiment is described. The gravity-driven hydrophilic membrane device used for the treatment of algae-containing water in this embodiment is composed of several water inlet containers 1, water pumps 5, water outlet containers 6, membrane modules 10, gas flow meters 11, and aeration equipment 12 ;

[0034] A water inlet pipe is arranged above the water inlet container 1, a water inlet valve is arranged on the water inlet pipe, a water outlet pipe is arranged on the lower part of the outer side wall of the water inlet container 1, and a water outlet valve is arranged on the water outlet pipe; The upper part of the outer side wall is provided with an overflow pipe, and the bottom of the water inlet container 1 is provided with a vent pipe; the vent pipe is provided with a vent valve;

[0035] The water outlet container 6 is a sealed light-shielding container, a water outlet is provided on the upper part of the outer si...

specific Embodiment approach 2

[0043] Specific embodiment two: this embodiment is different from specific embodiment one in that the aeration equipment is an air compressor or a blast aerator. The other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0044] Specific embodiment three: this embodiment is different from specific embodiment one or two in that the material of the pipe is a light-shielding material. The other steps and parameters are the same as in the first or second embodiment.

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Abstract

The invention relates to a gravity driving hydrophilic membrane apparatus for treating algae-containing water and a membrane cleaning method, and relates to a gravity driving hydrophilic membrane apparatus and a membrane cleaning method. The invention aims at solving the problem of the pretreatment of algae-containing water and environmental pollution caused by waste liquid produced when a gravitydriving hydrophilic membrane is cleaned. The gravity driving hydrophilic membrane apparatus comprises a plurality of water inlet containers, a water pump, a water outlet container, a membrane assembly, a gas flow meter and an aeration device. The cleaning method comprises the following steps: aerating the membrane assembly by virtue of the aeration device, storing, by the water outlet container,partial discharged water after the membrane filtering as backwash water, and sufficiently backwashing the membrane assembly under the gravity effect. By adopting the gravity driving hydrophilic membrane apparatus, no novel chemical substance is introduced, no secondary pollution is produced, an algae cell structure is not damaged, and the release of an intracellular article such as algal toxin canbe avoided. By adopting the cleaning method, no toxic and harmful substance can be introduced in the cleaning process, the secondary pollution is avoided, and no addition backwash water needs to be stored. The gravity driving hydrophilic membrane apparatus and the cleaning method thereof are suitable for pretreating the algae-containing water and cleaning the gravity driving hydrophilic membrane.

Description

Technical field [0001] The invention belongs to the field of water treatment, and relates to a gravity-driven hydrophilic membrane device and a membrane cleaning method. Background technique [0002] With the global warming and the massive discharge of nutrients such as nitrogen and phosphorus, lakes, reservoirs and other water bodies are prone to algal blooms. Water blooms corrupt the water quality and the algae toxins released by the algae seriously threaten the growth of aquatic organisms and disrupt the aquatic ecological balance. Lakes and reservoirs are usually used as drinking water sources, and algae blooms seriously threaten the safety of drinking water supply. [0003] At present, it is difficult to effectively remove algae in the main processes of coagulation, precipitation, filtration and disinfection in drinking water plants. Algae cells and odorants will partially penetrate the processing unit. During the algae bloom, the effluent from drinking water plants usually ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/44B01D61/00B01D61/18B01D61/20B01D65/02C02F101/30
CPCB01D61/00B01D61/18B01D61/20B01D65/02C02F1/44C02F1/444C02F2101/30
Inventor 马军张忠祥刘玉蕾王鲁宋浩然齐晶瑶
Owner HARBIN INST OF TECH
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