Application Study On Tibetan Area Of Sichuan Province Mountain Water Type Safe Drinking Water Project

Water is the source of life,and it is the guarantee of the resources of farmers' life and production.High altitude and cold climate inTibetan area of Sichuan Province lead to severe challenges to the safety of drinking water inTibetan area of Sichuan Provinces.The traditional water purification technology is not all suitable for Tibetan areas in Sichuan.Most of the traditional water supply projects that have been built previously exist in the case of abnormal operation and the failure of water to be frozen in the pipeline.Therefore,in the areas where the population is living,the water supply is guaranteed,and the water supply project with good effect is the choice to solve the above problems.Based on the data access,data collection,field investigation and work in Tibetan areas in Sichuan experience,through the method of combining theory and practice,mainly from the water brooks water source protection,the population of farmers and herdsmen use water most of the drinking water caused by unsafe factors decomposition,water treatment process of water the water quality of different exceed the standard case,the key to the corresponding research project.The main research conclusions include the following aspects:1)the hygienic standard of drinking water stipulates that pH is between 6 and 8.5,and the pH value is too large.Water points for mountain stream,by gravity,through the water to the PE pipe waterworks,water purification process of the standard,it directly after the water supply.The water distribution project is connected by the water distribution supervisor directly from the valve well in the water plant.2)iron and fluoride exceeded the standard limits,which did not meet the drinking water standard,but other indicators could meet the corresponding drinking water standards.The water supply project adopted the technology of "pre sedimentation tank+slow filter+ disinfection".The sedimentation tank and filter tank were used to purify the raw water.The chlorine dioxide generator was used to disinfect the raw water at the location of the disinfection pond,and the residue was discharged regularly through the drain pipe.3)the water quality conforms to the standard of drinking water,the water source is a natural fine water source,and the water supply project only needs to combine the disinfection and filtration.The raw water is filtered directly to the water purification facility,and the corresponding disinfectant generator is added to complete the disinfection work.After the mountain water "iron,fluoride,pH is too large,exceed the standard"water quality analysis of three different types of water engineering,find the corresponding treatment measures,and has certain application value.