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Device and method for disinfecting ro membrane with hot water

A disinfection method and hot water technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of RO membrane damage, reduced disinfection performance of membrane shell equipment, and reduced RO membrane filtration performance, etc. The effect of service life

Active Publication Date: 2016-05-18
GUANGZHOU TECH LONG PACKAGING MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the water temperature change rate exceeds 5°C / min, the polymer material of the RO membrane is prone to excessive shrinkage and peeling off of the RO membrane, the RO membrane may be seriously damaged by the influence of the water temperature, the filtration performance of the RO membrane is greatly reduced, and the disinfection performance of the membrane shell equipment is greatly improved. reduce

Method used

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  • Device and method for disinfecting ro membrane with hot water
  • Device and method for disinfecting ro membrane with hot water
  • Device and method for disinfecting ro membrane with hot water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] figure 2 It is a flow chart of the implementation of a hot water disinfection method in an embodiment of the present invention, which includes the following steps:

[0043] S201, increase the water temperature.

[0044] The water temperature in the hot water tank and the water flow circuit is increased, and the increased water temperature is passed from the hot water tank through the water flow circuit to the membrane shell, the RO membrane is cleaned with hot water, and the RO is killed with hot water at the same time Bacteria on the membrane.

[0045] S202: Detect the water temperature.

[0046] The first temperature sensor is used to detect the water temperature on the water inlet pipe of the membrane shell, and to know the temperature of the hot water entering the membrane shell.

[0047] S203: When the sterilization temperature is reached, the temperature rise is stopped.

[0048] According to the known temperature of the hot water entering the membrane shell, the action of...

Embodiment 2

[0050] image 3 This is the specific implementation flow chart of the hot water disinfection method in the second embodiment of the present invention, which includes the following steps:

[0051] S301, add normal temperature water to the hot water tank, and detect T Out With T Advance .

[0052] The first temperature sensor and the second temperature sensor are used to monitor the temperature T of the water entering the membrane shell. Advance And the water temperature T coming out of the membrane shell Out Perform collection.

[0053] S302, if|T Advance -T Out | Out Add 2.5 degrees Celsius as T.

[0054] Compare T Advance With T Out The temperature difference between. When the temperature difference is greater than 5 degrees Celsius, the first temperature sensor and / or the second temperature sensor are defined as faults; when the temperature difference is less than 5 degrees Celsius, the T Out Add 2.5 degrees Celsius to set the target temperature T and enter the next step.

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Abstract

The invention discloses a device for disinfecting an RO (reverse osmosis) membrane by hot water. The device comprises a hot water cylinder, a membrane shell provided with an RO membrane internally, and a PLC, wherein the hot water cylinder is provided with a hot water cylinder water inlet and a hot water cylinder water outlet, the membrane shell is provided with a membrane shell water inlet and a membrane shell water outlet, the hot water cylinder water inlet and the hot water cylinder water outlet are respectively correspondingly connected with the membrane shell water outlet and the membrane shell water inlet by a pipeline so as to form a water flow loop, the water flow loop is provided with a water pump and a water temperature regulating device as well as a first temperature sensor for detecting the water temperature, and the water temperature regulating device and the first temperature sensor are connected with the PLC. Water in the hot water cylinder is used for cleaning the RO membrane in the membrane shell, and the water temperature is continuously raised so as to enhance the effect of killing bacteria on the RO membrane. The PLC is used for controlling the water temperature regulating device to prevent the water temperature from exceeding the tolerant temperature of the RO membrane, the RO membrane is prevented from being damaged by high water temperature, and thus the filtering performance of the membrane shell cannot be alleviated. The service life of the membrane shell device can be greatly prolonged according to a method disclosed by the invention.

Description

Technical field [0001] The invention relates to a disinfection device, in particular to a device and method for disinfecting RO membranes with hot water. Background technique [0002] The conventional room temperature reverse osmosis membrane is used in the reverse osmosis system. The conventional room temperature reverse osmosis membrane is easy to breed bacteria. When sterilizing hot water is used to sterilize the breeding bacteria, it cannot withstand the high temperature environment of the sterilizing hot water. The chemical disinfection method adopted has the limitation of environmental pollution and few kinds of disinfection. [0003] At present, membrane shells are generally selected, but there are RO membranes in the membrane shells. RO membranes are prone to breed bacteria. Therefore, membrane shells used in reverse osmosis systems need to be disinfected frequently. Since the RO membrane is rolled from a polymer material, it has strict requirements on the temperature of h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/02
Inventor 祝中礼朱定洲
Owner GUANGZHOU TECH LONG PACKAGING MACHINERY CO LTD