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A gravity-driven hydrophilic membrane device and membrane cleaning method for algae-containing water treatment

A gravity-driven, hydrophilic membrane technology, applied in water/sewage treatment, water/sludge/sewage treatment, osmosis/dialysis water/sewage treatment, etc., can solve problems such as waste liquid pollution of the environment

Active Publication Date: 2020-12-11
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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  • A gravity-driven hydrophilic membrane device and membrane cleaning method for algae-containing water treatment
  • A gravity-driven hydrophilic membrane device and membrane cleaning method for algae-containing water treatment
  • A gravity-driven hydrophilic membrane device and membrane cleaning method for algae-containing water treatment

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specific Embodiment approach 1

[0033] Specific implementation mode one: combine figure 1 This embodiment is described. The gravity-driven hydrophilic membrane device used in 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] The top of the water inlet container 1 is provided with a water inlet pipe, the water inlet pipe is provided with a water inlet valve, the outer side wall lower part of the water inlet container 1 is provided with a water outlet pipe, and the water outlet pipe is provided with a water outlet valve; The upper part of the external 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 an airtight light-shielding container, the upper part of the side wall outside th...

specific Embodiment approach 2

[0043] Embodiment 2: This embodiment differs from Embodiment 1 in that: the aeration equipment is an air compressor or a blower aerator. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0044] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the material of the pipeline is light-shielding material. Other steps and parameters are the same as those in Embodiment 1 or 2.

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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 global warming and massive discharge of nutrients such as nitrogen and phosphorus, water bodies such as lakes and reservoirs are prone to algae blooms. Algae blooms corrupt the water quality and algal toxins released by algae seriously threaten the growth of aquatic organisms and destroy the balance of aquatic ecology. Lakes and reservoirs are usually used as drinking water sources, and algae blooms seriously threaten the safety of drinking water supply. [0003] It is difficult to effectively remove algae in the main process of coagulation, sedimentation, filtration and disinfection in the main process currently used in drinking water plants, and algae cells and odor substances will partially penetrate the treatment unit. During algae blooms, the effluent from drinking w...

Claims

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Application Information

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Patent Type & Authority Patents(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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