A detection system and method for the service life of a membrane module

A detection method and detection system technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of unsimulated end-face cycle impact force and low number of cycles, etc.

Active Publication Date: 2015-10-28
BEIJING SCINO MEMBRANCE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This test only tests the pressure resistance of the end face, and does not simulate the cyclic impact force of the end face in actual operation, and the number of cycles is relatively small
However, there is currently no effective method for evaluating the effect of the end face of the membrane module package after being subjected to long-term impact pressure cycles, and then judging and determining the service life of the membrane module.

Method used

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  • A detection system and method for the service life of a membrane module
  • A detection system and method for the service life of a membrane module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Connect the six-inch polyvinylidene fluoride column ultrafiltration membrane module 1 into the detection system, adjust the water temperature of the water inlet tank to 45°C through the heating unit, open the water inlet solenoid valve through the control unit, close the water outlet solenoid valve, and start the water inlet. The water pump pumps water from the water inlet of the membrane module, adjusts the water inflow so that the impact pressure in the module quickly reaches 0.3MPa, and keeps the pressure for 10s; then through the control unit, the water outlet solenoid valve is opened, the water inlet solenoid valve is closed, and the water is discharged quickly. The pressure reaches zero, and the pressure is released for 5 seconds; through the control unit, the pressure holding operation and the pressure relief operation cycle are carried out alternately, the membrane module maintains a cycle of 100,000 times, and the end surface of the membrane module package is not...

Embodiment 2

[0026] Same as Example 1, the inlet water temperature is 25°C, the impact pressure is 0.5MPa, the pressure holding time is 30s, the pressure release time is 15s, the module maintains 100,000 cycle pulses, and the end surface of the membrane module package is not cracked or damaged.

Embodiment 3

[0028] Same as Example 1, the inlet water temperature is 5°C, the impact pressure is 0.4MPa, the pressure holding time is 20s, the pressure release time is 10s, the module maintains the cycle pulse 100,000 times, and the end surface of the membrane module package is not cracked or damaged.

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Abstract

The invention provides a detection system and method for the service life of a membrane module, which belong to the technical field of micro-filtration or ultra-filtration. The system comprises a water inlet tank, a water inlet pump, a water inlet solenoid valve, a water outlet solenoid valve, a pressure gage, a heating unit and a control unit. The method disclosed by the invention comprises the following steps of: firstly, connecting the membrane module into the detection system; heating water in the water tank; opening the water inlet solenoid valve and closing the water outlet solenoid valve to ensure that impact pressure in the membrane module reaches specified pressure, and keeping the pressure in regulated time; then, opening the water outlet solenoid valve and closing the water inlet solenoid valve; rapidly discharging water and leaking pressure to zero; returning outlet water back to the water inlet tank; and circularly and alternatively carrying out pressure keeping operation and pressure leaking operation, wherein the cycle period is at least 100000 times. According to the detection system and method disclosed by the invention, a stressing condition of the membrane module under circulating impacting acting force in an application operation process can be simulated through alternative circulation of pressure keeping and pressure leaking periods of the impact pressure, and the sealing effect of a glue sealing end face of the membrane module is effectively evaluated, so that the service life of the membrane module is judged.

Description

technical field [0001] The invention relates to a detection system and a method for the service life of a membrane module, belonging to the field of microfiltration or ultrafiltration membranes. Background technique [0002] Water treatment is one of the key issues of environmental protection. Water treatment technology has received great attention. As a major innovative technology in the water treatment industry, microfiltration / ultrafiltration membrane separation technology is a new technology with both environmental protection and energy saving. Compared with other water treatment technologies, it has high treatment efficiency, good effect and low energy consumption. In recent years, with the successful development of new membrane materials and membrane technology, ultra-microfiltration membrane separation technology, as a membrane separation water treatment technology that has developed rapidly in recent years, has been used in steel, electric power, petrochemical, pharm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/10
Inventor 林亚凯何柳东赵杰徐大明
Owner BEIJING SCINO MEMBRANCE TECH
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