External pressure-type hollow fiber membrane module with antipollution structure and cleaning system

A cleaning system and external pressure technology, applied in the field of water treatment system manufacturing, can solve the problems of unscientific connection between U-shaped membrane wire and membrane shell, broken wires, etc., to accelerate discharge, reduce the probability of broken wires, and restore membrane continuity. amount of effect

Active Publication Date: 2010-06-30
HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages: First, due to the unscientific connection between the U-shaped membrane filament and the membrane shell, the membrane vibration generated during air shock will have a greater impact on the membrane filament at the bonding point...

Method used

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  • External pressure-type hollow fiber membrane module with antipollution structure and cleaning system
  • External pressure-type hollow fiber membrane module with antipollution structure and cleaning system
  • External pressure-type hollow fiber membrane module with antipollution structure and cleaning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: with reference to attached figure 1 . External pressure hollow fiber membrane module with anti-pollution structure, including water production pipe 1, raw water pipe 2, central water distribution pipe 3, central water distribution hole 6, U-shaped membrane wire 7, membrane shell 8, aeration device 9, air intake pipe 10. Concentrated water pipe 11, pollutant enrichment area 12, U-shaped membrane filament 7 is cast vertically on the upper end of the membrane shell and hangs down naturally, the lower end of the U-shaped membrane module is arranged with an air distribution system, and pollutants are arranged below the air distribution system enrichment area.

[0012] The U-shaped membrane wire 7 is vertically arranged inside the upper end of the membrane shell 8 and is single-ended cast on the upper end of the membrane shell 8. The U-shaped membrane wire 7 is cast with two layers of glue, and the first layer of glue 4 has a higher water hardness. The strengt...

Embodiment 2

[0015] Embodiment 2: with reference to attached figure 2 . On the basis of Example 1, the cleaning system composed of external pressure hollow fiber membrane modules, which includes external pressure hollow fiber membrane modules, is characterized in that: the raw water pipe 2 inlet in the external pressure hollow fiber membrane modules The booster pump 16 is communicated with the outlet of the raw water tank 15; the concentrated liquid pipe 11 in the external pressure type hollow fiber membrane module is communicated with the inlet of the raw water tank 15 through a pipeline, and is communicated with the 6# valve; the external pressure type hollow The inlet pipe 10 in the fiber membrane module is connected with the outlet of the storage tank 13, and the inlet of the storage tank 13 is connected with the air outlet of the air compressor 14; Connected, communicated with the 18 inlets of the produced water tank.

[0016] A 1# valve is provided between the outlet of the booste...

Embodiment 3

[0017] Embodiment 3: On the basis of Examples 1 and 2, the cleaning method of the cleaning system composed of the external pressure type hollow fiber membrane module, it includes the external pressure type hollow fiber membrane module and the cleaning system composed of the external pressure type hollow fiber membrane module Cleaning system, (1) During normal operation, open 1#, 3#, 5#, 6# valves, close 2#, 4# valves, turn on the booster pump 16, the raw water enters the membrane module from the raw water pipe 2, and the concentrate Part of the liquid pipe 11 returns to the raw water tank 15 and part of it is discharged. The fresh liquid is collected by the water production pipe and then enters the water production tank 18; (2) The cleaning process consists of air flushing-backwashing-forward flushing, and 4# and 6# are opened during air flushing , close the 5#, 1#, 2#, 3# valves, open the air compressor 14 and adjust the pressure through the storage tank 13, so that the gas vo...

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Abstract

The invention discloses an external pressure-type hollow fiber membrane module with antipollution structure and a system and a method for cleaning, the external pressure-type hollow fiber membrane module comprises a water producing pipe, a raw water pipe, a central water distribution pipe, a central water distribution hole, a U-shaped membrane fiber, a membrane casing, an aeration device, a gas intake pipe, a concentrated water pipe and a pollutant-enriched region, wherein the U-shaped membrane fiber is vertically cast at an upper end of the membrane casing in the shape of hanging naturally, an lower end of a U-shaped membrane module is provided with a gas distribution system, below which the pollutant-enriched region is arranged. The external pressure-type hollow fiber membrane module has the advantages: 1, membrane pollution can be effectively controlled so as to maintain the membrane at higher flux and cleaning can be performed timely during pollution to rapidly recover membrane flux; 2, the possibility of fiber breakage can be reduced due to non-tensioned membrane fiber and adequate shake of aeration; and 3, the V-shaped pollutant-enriched region without any component is arranged below the aeration device, thus no resistance is applied to the lower portion of the membrane fiber during washing and the washing water can speed up the discharging of pollutants.

Description

technical field [0001] The invention relates to an external pressure hollow fiber membrane module with an anti-pollution structure, a cleaning system and a method, and belongs to the field of water treatment system manufacturing. Background technique [0002] Authorized announcement number NC1199717C, title "A type of hollow fiber membrane module with external pressure that can be flushed with air", relates to the structural design and use method of a hollow fiber membrane module. The main technical feature of the present invention is that a special air flushing part is arranged in the middle of the membrane filaments at the bottom of the membrane module; Reasonably standardize the trajectory of gas and water and the flow state of two-phase flow, and at the same time make the membrane module work in the subcritical flux operating area under the selected operating conditions. Its disadvantages: First, due to the unscientific connection between the U-shaped membrane filament ...

Claims

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Application Information

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IPC IPC(8): B01D63/02B01D65/02C02F3/02
CPCY02W10/10
Inventor 朱俊峰干建文姜红明
Owner HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
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