给水清水工艺的长大(国外英文资料).docVIP

给水净水工艺的发展(国外英文资料)Some urban water plants in China have already begun work on this.(2) modification of coagulation technology. The basic method of transformation can be used for the use of static mixer, water pump and mixing mixer.(3) flocculation technology. The basic principle of the transformation is to create suitable hydraulic conditions, which make the flocculation process as close as possible to the best GT value. The area of the area of the area of the broken floccules should be expanded, and the small parts of the GT are added to the grid or the resistance flow device. If you want to increase the flocculation time properly, you can properly take up some sediment pool space to solve it.(4) modification of the filtration technology, which shall be transformed into a double filter for coal and sand; It is possible to consider using light weight (coal or ceramic filter), coarse particle size, and thicker filter layer. The filter is combined with the soda water to wash down, improve the washing effect, and reduce the amount of water washing.(5) the application of the filter. Again in into filter water filling a few (usually 1 to 3 mg/L) as coagulant or trace of high polymer flocculant, can significantly improve the filtering performance of water, significantly improve the removal rate. This is a very important measure to improve water quality. After the addition of the filter, the amount of water turbidity decreased significantly, but the operation cycle was shortened accordingly. After the test, using the filter aid, such as operation cycle is long, can not change the filter layer, or to change the filter to double filter material at the same time or particle filter layer and add surface flush to improve the washing effect.(6) adding activated carbon adsorption or biological activated carbon (ozone activated carbon combined) depth treatment facilities, further control the concentration of organic pollutants in the water leaving the factory, to reduce the generat