| In recent years, with the industry developing and water resources pollution becoming more and more serious, the contents of organic matter in drinking water sources are increasing,so the water source is the tendency of micro pollution.In order to improve the processing capacity of organic matter, ammonia nitrogen and meet the new GB standard requirements, the water all over the country starte to carry on the renovation of advanced treatment process.This topic mainly takes Qingtai waterworks of hangzhou as the object of study, according to the basic theory of water treatment and the research of advanced treatment process,it carries on the renovation of the problems found in actual operation. In this paper the main research contents and conclusions are as follows:1).Carrying on the water quality experiment to analyze removal rate. After the pre ozone doses, nitrite removal rate is more apparent, about67%. The carbon sand filter on the oxygen consumption and ammonia nitrogen removal rate is higher, at32%and32%, obviously superior to the sand filter.To study removal rate of carbon sand filter under high ammonia nitrogen and high manganese in extreme water quality, it is concluded that the removal conditions and the limit removal rate of carbon sand filter.2).To study the removal rate after the advanced treatment process of pre ozone+coagulation sedimentation+carbon sand filter, the main water quality indexes of turbidity, oxygen consumption, the removal rate of ammonia nitrogen and nitrite were99ã€94ã€59ã€74and99.94%respectively.3).To carrying on the parameter determination of the carbon sand filter,we discover that there are serious running carbon phenomenon. We adopt corresponding adjustment and project modification measures to improve it.By studying the operation cycle of carbon sand filter,we make plans and prolong the operation cycle for36h, it may save the costï¿¥979every day.4).On the determination of methylene blue and iodine value,we find methylene blue and iodine value greatly reduce after a year of operation. This time mainly use activated charcoal biological function. The analysis of the experiment biological leak during renews transformation period meets the requirements of relevant standards. |
