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Ceramic membrane water filtering device and pretreatment method thereof

A ceramic membrane and pretreatment technology, applied in filtration treatment, water/sewage treatment, water treatment parameter control, etc., can solve problems such as methods that do not form a system

Pending Publication Date: 2022-03-25
山东泰禾环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, most of the pretreatment methods of membrane filtration and the physical backwashing and chemical cleaning methods after pollution are aimed at organic me

Method used

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  • Ceramic membrane water filtering device and pretreatment method thereof
  • Ceramic membrane water filtering device and pretreatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Raw water sampling: Qingdao Jiaozhou Bay seawater, turbidity 24.7NTU, conductivity 55850μS / cm, pH7.78, total hardness 6126mg / L calculated as calcium carbonate;

[0060] Selection of ceramic membrane: Haichuan Membrane Zibo Environmental Protection Technology Co., Ltd., the model is CM-12, the pore size is 60nm, the area is 24㎡, and the material is zirconia, alumina and titanium oxide composite materials; the ceramic membrane adopts cross-flow filtration, cross-flow 10%, the transmembrane pressure difference is 0.08MPa, and the operating flux is 5.6m 3 / h;

[0061] Pretreatment method: Seawater enters the water inlet pipe 01, and 10 mg / L flocculant is quantitatively added through the flocculant adding device 07. After the seawater enters the flocculation reaction tank 03 and reacts for 30 minutes, it is pressurized by the first booster pump 04 and then pumped by the water inlet 051 After entering the ceramic membrane filter 05, after being filtered by the ceramic membra...

Embodiment 2

[0065] With embodiment 1, difference is not to add flocculant;

[0066] After 8 hours of operation, the transmembrane pressure rises to 0.13MPa, and chemical cleaning is required, and the cleaning cycle is 3 times a day.

Embodiment 3

[0068] Same as Example 1, the difference is that 3mg / L flocculant is added, and the transmembrane pressure rises to 0.13MPa after 24 hours of operation, and chemical cleaning is required, and the cleaning cycle is once a day.

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Abstract

The invention relates to a ceramic membrane water filtering device and a pretreatment method. The ceramic membrane water filtering device comprises a flocculation reaction tank, a first booster pump, a ceramic membrane filter and a ceramic membrane water producing tank which are sequentially communicated from a water inlet pipeline to a water outlet pipeline, an inlet of the flocculation reaction tank is connected with a flocculant adding device; a water inlet at the bottom of the ceramic membrane filter is connected with a fan and a cleaning water tank; a chemical cleaning agent adding device and a cleaning pump are connected between the water inlet and the cleaning water tank; a backwashing pump is connected between a water producing port at the upper part of the ceramic membrane filter and the ceramic membrane water producing pool; a concentrated water opening in the top of the ceramic membrane filter is connected with an inclined tube sedimentation tank. According to the invention, seawater, surface water, reclaimed water and the like are filtered by using the ceramic membrane, so that the occupied area is reduced by more than 70%, the operating cost is reduced by more than 50%, the service life of the membrane is prolonged from 3-5 years to more than 20 years, the maintenance work caused by filament breakage of the hollow fiber membrane is reduced, and the environmental pollution caused by plastic wastes generated after the service life of the organic membrane is ended is avoided.

Description

technical field [0001] The invention belongs to the field of water treatment, and more specifically relates to a ceramic membrane water filter device and a pretreatment method thereof. Background technique [0002] At present, there are usually two treatment methods for seawater desalination, surface water, and reclaimed water reuse. One is to use sedimentation tanks, sand filters, and organic hollow fiber membranes for desalination treatment or direct application. This method has a long process flow and It occupies a large area, has high operating costs, and complicated operations. At the same time, organic hollow fiber membranes generally only have a service life of 3-5 years, which is short, easy to break, high maintenance costs, and easy to cause environmental pollution after membrane replacement; another It uses sedimentation tanks and submerged hollow fiber membranes or organic flat membranes for desalination treatment or direct application. Organic membranes also have...

Claims

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Application Information

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IPC IPC(8): C02F9/04B01D65/02B01D71/02
CPCC02F9/00B01D65/02B01D71/02C02F1/5281C02F2001/007C02F1/001C02F1/44B01D2321/04B01D2321/12B01D2321/18C02F2209/44C02F2209/42C02F2209/03C02F2209/06
Inventor 房军贤
Owner 山东泰禾环保科技股份有限公司
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