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Method and system for improving and transforming water production rate of membrane system

A membrane system and water production rate technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc.

Pending Publication Date: 2021-05-07
BEIJING DRAINAGE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the long-term operation of the membrane, inorganic particles and colloidal viscous organic substances will accumulate on the membrane surface, and it is difficult to remove them by simple cleaning, gradually forming serious membrane fouling.
Moreover, defects in membrane system and pretreatment design, human error, extensive operation and maintenance management, and lag will aggravate the degree of membrane fouling.
The decrease of membrane flux, increase of transmembrane pressure difference and decrease of product water quality caused by membrane fouling are the main problems faced in the operation of ultrafiltration process.

Method used

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  • Method and system for improving and transforming water production rate of membrane system
  • Method and system for improving and transforming water production rate of membrane system
  • Method and system for improving and transforming water production rate of membrane system

Examples

Experimental program
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Effect test

Embodiment 1

[0060] This embodiment provides a system for improving the water production rate of the membrane system, such as figure 1 , figure 2 As shown, the system includes an ultrafiltration membrane fouling analysis subsystem, a biological filter effluent water quality monitoring subsystem, a membrane workshop backwashing dosing subsystem and two membrane modules 10;

[0061] The membrane workshop backwash dosing subsystem includes four medicine dosing rooms 1, four dosing pumps 2, two flow meters 3, four backwash solenoid valves 4, four backwash pumps 5, backwash storage Pool 6, CIP cleaning circulation pump 7, CIP cleaning solenoid valve 7 and CIP dosing tank 9;

[0062] The four drug dosing rooms 1 are respectively connected to one end of the four dosing pumps 2; the other ends of every two dosing pumps 2, a flow meter 3, and one end of every two backwash solenoid valves 4 are sequentially connected; the other ends of the four backwash solenoid valves 4 are respectively connecte...

Embodiment 2

[0068] This embodiment provides a method for improving and transforming the water production rate of a membrane system. The method adopts the system for improving and transforming the water production rate of a membrane system described in Embodiment 1, and includes the following steps: using the biological filter effluent water quality monitoring subsystem The water quality of the membrane system is monitored in real time. If the water quality of the membrane system exceeds the threshold value, the membrane pollution is evaluated by the ultrafiltration membrane pollution analysis subsystem, and the backwashing process of the membrane workshop is formulated according to the evaluation results. The operating parameters of the drug subsystem, and then backwash the membrane module, the steps include:

[0069] S1: Backwash the membrane module: turn on the four backwash solenoid valves 4, four dosing pumps 2, and four backwash pumps 5 in turn to backwash the membrane module, and wai...

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Abstract

The invention belongs to the technical field of sewage treatment, and discloses a method and a system for improving and transforming the water production rate of a membrane system. The method comprises the following steps: monitoring the quality of water produced by the membrane system in real time by using a bio-filter effluent quality monitoring subsystem, if the quality of the water produced exceeds a threshold value, evaluating membrane pollution by using an ultra-filtration membrane pollution analysis subsystem, and formulating the operation parameters of a membrane workshop back-washing dosing subsystem according to an evaluation result, so that the membrane component is subjected to back-washing. Through the evaluation of the ultra-filtration membrane pollution analysis subsystem, the operation parameters of the membrane workshop back-washing dosing subsystem are formulated, and the real-time monitoring of the bio-filter effluent quality monitoring subsystem is matched, so that the stable operation of the membrane system is realized.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method and a system for improving the water production rate of a membrane system. Background technique [0002] At present, there is a serious shortage of fresh water resources. An effective way to solve this problem is to recycle domestic sewage, which is of great significance to alleviate the current situation of water resource shortage. Ultrafiltration membrane technology can effectively intercept particles with a particle size larger than the pore size of the ultrafiltration membrane in water. It has the advantages of good water quality, small footprint, stable operation, easy automatic control, no phase change, and no secondary pollution. It is used in sewage regeneration It has been widely used in the field of utilization. However, during the long-term operation of the membrane, inorganic particles and colloidal viscous organic substances will accumu...

Claims

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Application Information

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IPC IPC(8): B01D65/10B01D65/06C02F3/12
CPCB01D65/06B01D65/10B01D2321/162B01D2321/164C02F3/1268C02F2209/11Y02W10/10
Inventor 常江王佳伟王浩张志强刘国梁张海龙王晓爽邱浩然杨炼彭浩
Owner BEIJING DRAINAGE GRP CO LTD
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