Method and device for cleaning high-efficiency water-saving medicine-saving membrane unit

A cleaning device and membrane stack technology, applied to chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of large water volume, increased cleaning frequency, waste of chemical dosage, short recovery duration, etc., to achieve Reduce the amount of water, avoid the waste of medicine, and improve the effect of cleaning effect

Active Publication Date: 2014-11-26
KUNMING DIANCHI WATER TREATMENT CO LTD
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Problems solved by technology

[0006] The object of the present invention is to provide a cleaning method and device for a highly efficient water-saving and chemical-saving membrane module, which solves the complicated operations such as manual movement and assembly when cleaning the inside of the membrane module; effectively reduces the problem of large water volume when the membrane module is cleaned of

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  • Method and device for cleaning high-efficiency water-saving medicine-saving membrane unit

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Embodiment Construction

[0022] Efficient water-saving, medicine-saving membrane assembly device cleaning device of the present invention such as figure 1 As shown, it includes clean water pool 1, two dosing pools 2, CIP pump 4, air supply hose 5, and water production hose 6. The first CIP pump is connected to the clean water pool, the second CIP pump is connected to the dosing pool, and the second CIP pump is connected to the dosing pool. A CIP pump is connected in parallel with the pipeline of the second CIP pump and then connected with the air supply hose 5 and the water production hose 6 connected to the water outlet of the membrane tank, and there is a water filling valve on the parallel pipeline of the first CIP pump and the second CIP pump 8. There are air supply valves 9 and 10 on the air supply hose and the water production hose respectively. The pipeline connected with the first CIP pump of the clean water tank is provided with a water vapor control valve 10 for the clean water tank. The pi...

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Abstract

The invention discloses a method and a device for cleaning a high-efficiency water-saving medicine-saving membrane unit. The method comprises the following steps: allowing reclaimed water subjected to MBR treatment to pass through three bubble pools, a clean-water reservoir and two dosing pools, adding 1000kg of 13 mass percent of sodium hypochlorite solution and 25+/-0.1kg of industrial sodium hydroxide, and stirring until the sodium hydroxide is completely dissolved; moving the membrane unit into the clean-water reservoir, mixing the reclaimed water and gas to perform continuous and effective air scrubbing and water scrubbing on membranes which are difficultly cleaned in a membrane box, and cleaning organic matters such as activated sludge attached to the membranes on the surface of the membrane box and in the membrane unit; transferring the membrane unit into the dosing pools, performing bottom aeration, jittering to blow out the sludge on the membranes in the membrane unit, and effectively cleaning the membranes through air bubbles generated by air aeration. According to the method and device, the waste of dose is effectively reduced, the membrane flux is improved, and the effluent amount and water quality stability of the MBR process are guaranteed.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a cleaning method and device for an efficient water-saving and drug-saving membrane assembly. Background technique [0002] Membrane biological method refers to a sewage treatment method that uses membrane as a separation medium instead of conventional gravity precipitation solid-liquid separation to obtain effluent, and improves the reaction process and reaction efficiency; the membrane unit is a gas supply device, water collection device, hollow fiber curtain membrane It is a basic water treatment unit assembled with sheets, membrane boxes, etc., and is a device for solid-liquid separation in membrane biological wastewater treatment projects; MBR is composed of microfiltration (MF), ultrafiltration (UF) or nanofiltration (NF) membrane modules Composed of bioreactors, according to the different functions of membrane modules in bioreactors, they can be divided into s...

Claims

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Application Information

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IPC IPC(8): B01D65/06C02F3/00
Inventor 郭玉梅吴毅晖郭昉刘波王琳潘国强周平林阳张琳杜吉灿
Owner KUNMING DIANCHI WATER TREATMENT CO LTD
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