Study On Water Intake Nearby The Taipu River In Qingpu District

At present,the Taipu River water pollution is still serious,but Qingpu Water Plant takes water directly from the river,and uses conventional drinking water treatment process,which have limitations on removing pollutants.All these make it difficult to protect the quality of drinking water,and to male healthy drinking water at risk.In response to this situation,this paper brings up an idea of using water intake process along Taipu riverside to improve water quality and access to good quality drinking water.That's because in water intake process nearby the river, the water can be purified by the river water filtration system.And its water equipment is simple and low cost.If the engineering be designed reasonable and suitable with environment in Taipu River region,it will be able to obtain sufficient quantity source water with good quality,which of great significance.This paper mainly discussed the water intake along Taipu riverside in Qingpu District,hoping to improve the quality of drinking water in Qingpu District,and to bring design concept and valuable technical support for construction feasibility analysis of water sources nearby river.The main research methods are:survey the natural environment, land use,pollution overview in Taipu River area;fieldwork Taipu River water quality,hydrological,geological environment,for some important geological parameters,commissioned a geotechnical engineering firm in Songjiang,Shanghai to test;togother with Qingpu District Environmental Monitoring Station,monitoring and analysis the water quality of the water intake,the research period took one year and a half;access to a large number of domestic and foreign literature and technical reference, finishing water intake nearby river-related research results and theory,as a theoretical support for this paper carried out;analysis water project pattern of development nearby Taipu River,to develop the type of water works,and forecast water extraction,analysis engineering design of the technical feasibility;in the above basis,forecast the effects of water projects nearby Taipu River,focusing on the extent of water purification.This study shows that there are still many sources of pollution in Taipu River area,Taipu River water quality often deteriorated,resulting in drinking water source pollution serious.In addition,from analysis the hydro-geological conditions,Taipu region is suitable for water project along the riverside,and the majority water in the water project comes form infiltration river water,which in line with the requirements of water project along the riverside,with no land subsidence and other geological problems.At the same time,Taipu River sediments contains lots of clay and organic matter-rich,small size,which has great adsorption capacity, so it is expected to have a good purification efficiency by water infiltration.The water quality monitoring study on the water intake for one year and a half,found that perennial Taipu River water quality standard,the most polluted water project were as follows:total nitrogen, ammonia,potassium permanganate index,total phosphorus,dissolved oxygen,chemical oxygen demand,biochemical oxygen demand,oil.The number of days exceeds water standard accounts for 100%-13.3%. Taking the hydrogeological conditions and water requirements into account,choose large diameter well and the infiltration gallery as the two water development model for analysis:if using large diameter well,need about 15 wells,the water quality is good,the construction is simple and low cost;if using infiltration gallery,the appropriate selection is parallel and vertical layout form,calculation shows it meets the water quantity, with good economic returns,but the water quality is worse than large diameter well.On this basis,forecast water quality change after the water project near Taipu river,river water will be purified by filtration system, the current contaminate water will meet surface water environmental quality standards(GB3838-2002)â…¡,at the low level of water pollution. The water quality of water intake project nearby river,also depends on the water project design and operation conditions,the actual results is to be examined and verified in real projects.