Ultrafiltration back flushing device for rural domestic sewage

A technology for ultrafiltration backwashing and domestic sewage, which is applied in ultrafiltration, osmosis/dialysis water/sewage treatment, semi-permeable membrane separation, etc. It can solve the problems of ultrafiltration components such as easy damage, complicated operation and management, and short operating cycle. Achieve the effects of thorough cleaning, simple operation and management, and low investment and operation costs

Inactive Publication Date: 2014-03-26
CHENGDU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention proposes an ultrafiltration backwashing device for rural domestic sewage, which mainly solves the problems of high energy consumption, incomplete cleaning, poor flux recovery, ...

Method used

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  • Ultrafiltration back flushing device for rural domestic sewage
  • Ultrafiltration back flushing device for rural domestic sewage
  • Ultrafiltration back flushing device for rural domestic sewage

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Embodiment Construction

[0034] The size of the ultrafiltration backwashing device can be tailored according to the actual water treatment volume and water quality in the countryside, and the selected tubular membrane module; it can also be used in conjunction with the ultrafiltration device.

[0035] The system adopts continuous operation mode, open the front operation door 2.4, install the tubular membrane module to be cleaned into the backwashing system through the flange interface, press figure 1 When the pipeline is connected, two-stage cleaning starts, and the working process is as follows:

[0036] 1. The first level of manual flushing - "high water level pressurized manual flushing"

[0037] (1) Close the backwash sewage discharge valve 1.10 and the backwash remaining clean water discharge valve 1.13, close the front operation door 2.4 of the reactor, open the clean water supply valve 1.28, fill the high-level clean water storage tank 1.25 with clean water, and close the clean water supply val...

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Abstract

The invention discloses an ultrafiltration back flushing device for rural domestic sewage, belongs to sewage treatment (C02F), and mainly aims to solve the problems of high energy consumption, incomplete cleaning, poor flux recovery, short running period, complexity in operation management, easiness in damaging ultrafiltration assemblies and the like existing in the conventional tubular ultrafiltration back flushing device. A manual hydraulic pump is used for supplying power to the ultrafiltration back flushing device, so that a low-power and low-energy-consumption effect is achieved; moreover, a two-stage flushing mode consisting of high-level boosting manual flushing and manual hydraulic pump boosting back flushing is adopted for completely flushing a membrane tube, so that the membrane flux recovery degree is increased effectively, and the running period of a membrane assembly is prolonged. The ultrafiltration back flushing device has the advantages of low energy consumption, completeness in cleaning, good flux recovery, easiness in operation management, low investment and running costs and the like, and can be used by being matched with an ultrafiltration device.

Description

(1) Technical field: [0001] The invention relates to an ultrafiltration and backwashing device for rural domestic sewage, which belongs to the sewage treatment category (C02F). (two) background technology: [0002] The main defects of the existing ultrafiltration backwashing device close to the present invention are as follows: (1) using a high-power raw water pump to directly pump the medicament or clear water into the tubular ultrafiltration membrane, the energy consumption is extremely high, and the operating cost is difficult to control. It is not suitable for treating small-scale rural areas; (2) For the clogging of membrane tubes caused by sludge sedimentation and growth, the cleaning is not thorough, resulting in poor flux recovery after cleaning, resulting in short membrane operation cycles; (3) Often with the help of some The acid-base solution of cleaning agents (such as: compound compounds, surfactants or active enzymes) is used for cleaning. The cleaning operatio...

Claims

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Application Information

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IPC IPC(8): B01D65/02B01D61/20C02F1/44
Inventor 曾永刚苏蓉黄正文
Owner CHENGDU UNIV
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