Present Situation Of Domestic Sewage In Chongqing Areas And Research On ALB New Technology

Located in the upstream region of the Three Gorges Reservoir area, Chongqing and the surrounding small towns is the national key environmental protection areas,with 15 in the core area of the reservoir. The small town population range from 10 to20 thousand. sewage have high nitrogen and low carbon nitrogen ratio characteristics.Sewage treatment plant operation is not normal, sewage straight row of rivers or sewage treatment standards and sewage quality have high impact in Three Gorges Reservoir area dry tributary water quality, for the safety of the Three Gorges reservoir water environment pose a threat. Therefore, to adapt to the high, good treatment effect process is to solve the problem of choice.Firstly, according to the investigation of the cities and towns in Chongqing using the highest frequency of typical process- artificial rapid infiltration, and on all aspects of the situation were pooled analysis, and put forward rectification opinions. However,artificial rapid infiltration is not regarded as solve the long-term selection for the regional sewage disposal problem, and as the transition period of temporary selection process. Therefore, to adapt to the high, good treatment effect process is to solve the problem of choice.This experiment use the experimental water distribution,simulation methods to detect the effect of ALB process.Fist,design ALB integrated experimental device. And ALB process operation stage following. this stage is mainly by ALB process test device to simulate the sewage treatment process of ALB of plant operation, and adjusting the parameters of device, to achieve the best operating conditions. Finalized the appropriate reagents diatomite, is added to the normal operation of the alb process apparatus is cast, and regulate the diatomite dosage monitoring the operation and treatment effect, determine the best delivery conditions.Study found that, after the commissioning of the gas provided clarification of sewage to the laboratory configuration has better treatment effect integration process,diatomite dosing for the pollutants in water treatment effect is obvious, and without the need for additional treatment structures, save money and resources, little pollution to the environment, should be popularized and applied in small town sewage.