Water purification device combining gravity ultrafiltration membrane filtration and powder active carbon absorption for use

Abstract

The invention relates to a water purification device combining gravity ultrafiltration membrane filtration and powder active carbon absorption for use. The water purification device comprises an ultrafiltration device for filtering raw water, a water inlet device connected with the lower part of the ultrafiltration device, and a powder active carbon backflow device connected with the upper part and the lower part of the ultrafiltration device via two pipelines respectively, wherein the ultrafiltration device comprises a membrane tank, an ultrafiltration membrane component, a water outlet pipe, an overflow pipe and an aeration head; the ultrafiltration membrane component is arranged in the membrane tank; the overflow pipe is arranged outside the upper part of the membrane tank and is higher than the ultrafiltration membrane component; one end of the water outlet pipe is arranged on the ultrafiltration membrane component, and the other end of the water outlet pipe extends out of the membrane tank; and the aeration head is arranged at the bottom of the membrane tank. Compared with the prior art, the device adopts a gravity ultrafiltration membrane technology to reduce the energy consumption; the size of the device is small due to an integral design; the device has the advantages of simple system operation, low manufacturing cost, small floor area and the like; and compared with the traditional water treatment technique, the device is more applicable to disperse country water supply treatment and disperse sewage treatment.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to a water purification device combined with gravity ultrafiltration membrane filtration and powder activated carbon adsorption. Background technique [0002] Ultrafiltration is a membrane separation technology that can purify and separate solutions. The ultrafiltration membrane system is a solution separation device that uses ultrafiltration membrane filaments as the filter medium and the pressure difference on both sides of the membrane as the driving force. Ultrafiltration membrane technology can effectively remove macromolecules, colloids, proteins, etc. in raw water, and has been widely used in the field of water treatment. The ultrafiltration membrane process can greatly reduce the generation of disinfection by-products, thereby improving the safety of drinking water, and has the characteristics of low operating pressure and large water production. Gravity ultrafil...

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Problems solved by technology

[0003] Ultrafiltration membrane technology and powdered activated carbon adsorption technology have been widely used in China. There are also some related studies on the combined use of the two. Some of them divide ultrafiltration membrane filtration and activated carbon adsorption into two water purification processes. Such a water purification system The volume is large and the process is long; when using ordinary ultrafiltration membrane technology, it is necessary to consider that the ultrafiltration membrane is easily polluted and requires a backwashing process, and the activated carbon needs to be replaced in time during use, and the operation is more complicated

Therefore, there is currently no water purification device that can combine the advantages of ultrafiltration membrane technology and activated carbon adsorption technology, and is more convenient to operate.

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