A kind of ultrafiltration membrane water purifier

Abstract

The invention discloses a water purifier with an ultrafiltration membrane. The water purifier comprises a filtration tank, wherein the top of the filtration tank is provided with a water inlet, and the bottom of the filtration tank is provided with a water outlet; the filtration tank is internally provided with an activated carbon filtration layer and an ultrafiltration membrane filtration layer. A preparation method of an Al2O3-PVA ultrafiltration membrane comprises the following steps: firstly preparing Al2O3 sol, then preparing an Al2O3-PVA casting membrane solution, and finally solidifying to obtain the ultrafiltration membrane. According to the preparation, PVA is modified by use of Al2O3, and cerium ions are doped, so that the crystal form, particle morphology, pore size and distribution, membrane thickness and the like of the membrane can be effectively controlled, and thus the ultrafiltration membrane has an excellent retention rate on impurities in water and excellent acid and alkali resistance property, and has certain bactericidal performance. The water purifier with the ultrafiltration membrane, provided by the invention, is simple and reliable in structure, good in purification effect and beneficial to large-scale popularization.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to an ultrafiltration membrane water purifier. Background technique [0002] More than 80% of the tap water plants in the world use chlorine as an effective means of sterilization and disinfection. In order to ensure the safety of microbial indicators in drinking water, a certain amount of residual chlorine must be maintained in tap water. The allowable range of residual chlorine in my country's tap water quality standard is 0.2-1.5ppm, generally lower than 1.0ppm. Residual chlorine not only has certain harm to human health, but also causes unpleasant smell in water. At the same time, it will produce many chlorine by-products, which are even more harmful to human body than residual chlorine itself. For example, when residual chlorine in tap water combines with organic matter in water, carbon tetrachloride, dichloroethanol, and trihalomethane are produced. Chlorine, brom...

AI Technical Summary

Problems solved by technology

Although the tap water currently supplied by our country meets the national hygiene standards, due to various reasons, the water quality of tap water in domestic cities is generally poor at present, and still contains certain impurities and other trace organic substances that are harmful to the human body, affecting the health of the human body

For this reason, there are many kinds of water purification devices on the market, but because the structure is relatively complicated and the cost is relatively high, they are not widely used.

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