Process method/device adopting RO membrane to perform water treatment

Abstract

The invention discloses a process method / device adopting RO (Reverse Osmosis) membrane to perform water treatment. The method comprises working processes such as preprocessing, advanced purification and sterilization, wherein the preprocessing comprises ultrafiltration and / or filtration and microfiltration to source water; the advanced purification adopts RO treatment; and the sterilization adopts UV (Ultra Violet) sterilization and disinfection. In the invention, various purification treatment processes of the drinking water source are optimized, and the device / equipment which can ensure the favorable process implement effect is correspondingly selected. Compared with the prior art, the processes such as active carbon filtration, dual-media filtration, biofiltration, ultrafiltration and microfiltration are combined with the RO process; the reasonable preprocessing process is selected according to the specific circumstances through experiments, so that the processing pressure of the RO process is reduced, the favorable purification effect is obtained, the product water after preprocessing, RO and UV disinfection reaches the high quality or direct drinking water standard, and the problems existing on the current drinking water in countryside are effectively solved.

Description

technical field [0001] The invention relates to a water treatment with a reverse osmosis membrane, in particular to a process method and a device for advanced treatment of well water, river water, small water plant effluent and Taihu source water, and belongs to the technical field of water treatment. Background technique [0002] China's vast rural areas span a vast territory, spanning two major climatic zones, hot and temperate, from north to south, with complex terrain changes. Therefore, the hydrogeological conditions vary greatly, which determines the variety of drinking water sources. The types of drinking water sources in China mainly include five types: river water, reservoir and lake water, pit and pond cellar water, well water and spring water. River water is not only the source of water for centralized water supply in cities, but also the source of drinking water for small towns and scattered rural areas. Reservoirs and lakes are sources of water for cities, and...

AI Technical Summary

Problems solved by technology

[0003] The main problems of drinking water in China's rural areas are: the overall level of rural water supply is not high, which seriously affects the health and normal life of the masses; the drinking water source in some areas is insufficient, and the guarantee rate is low; the quality of rural drinking water is not high

It can be seen from the test indicators that the main problems of the three water sources are: the residual chlorine content in the effluent from small water plants is seriously exceeding the standard, the residual chlorine content of the factory water is 6 times that of the national drinking water standard, and the factory water has a strong cyanobacteria smell; The organic pollution of the river water is serious, the content of sediment and suspended solids is high, the sensory indicators such as color, taste, and turbidity are seriously exceeded, and the number of bacteria is high. The water mineral content is high, the water hardness is high, and the number of bacteria seriously exceeds the standard. The total number of bacteria and total coliforms are 13 times and 23 times that of the national drinking water standard respectively

[0012] (2) High turbidity: the turbidity of the source water of Taihu Lake is 400 degrees (NTU), and the national drinking water source water quality standard is ≤3 degrees (NTU), which is 133 times higher than the national standard

[0013] (3) Obvious objects visible to the naked eye: the source water of Taihu Lake contains a large amount of sediment, which does not meet the water quality standards for drinking water sources

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