Study On The Technics Of Dealing With Manganese And Organics In Shallow Water

In recent years, with the construction of the urban water system implementation, urban flood and draining waterlogging and the requirements of the ecological landscape, built around river regulation engineering, make the city landscape environment have made a lot of improvement, but with the improvement of the river water level surface water and shallow diving supply relationship produced a series of change, both between pollutants exchange easier. WuLie river basin in chengde regions in rubber dam channel of water conservancy construction project, the influence of shallow water quality to dive, organic matter exists to light pollution, manganese and iron not exceed exceeds the pHenomenon, organic matter, mn in more than the living and drinking water hygiene standard of water quality index, organic matter in drinking water can lead to exceed the water chroma, it smells, let a person senses discomfort, organic matter contains a lot of poisonous and harmful material, cause harm to human body health; Manganese content in drinking water can lead to exceed the water there, XingChouWei reddish brown, long after quote to human body of the nervous system will have great harm, serious can lead to Parkinson’s disease.This shows, drinking water supplies contains manganese and organic pollution problem has become the influence to the city residents drinking water safety problems, must cause the attention of the appropriate departments.In order to better use shallow diving, and guarantee the safe supply, find suitable for the pollution of water treatment method is very urgent. The main topic of the fourth waterworks in Num 2 and Num 3,Num 4water Wells for test water, with its raw water as the research object, from the domestic experts research results, the paper analyses the reasons of pollutants, the choice of natural manganese sand filter potassium permanganate add/process, and combined with the engineering practice with the deep detailed analysis research. The research content mainly includes the following aspects:1.The cause of pollutants analysis, through to the channel silt, river water and soil around the river test, to determine the source of the pollutants;2.According to the type of pollutants, physical and chemical characteristics, select the suitable for processing method, make test plan; The cause of pollutants analysis, through to the channel silt, river water and soil around the river test, to determine the source of the pollutants;3.Static adsorption test and dynamic filter test, with the orthogonal analysis method to determine the most suitable for processing this kind of water quality test data and processing effect;4.Comprehensive analysis, determine treatment chengde regions of the slightly polluted water shallow dive operation parameters, guide the actual operation.After test analysis can reach the following conclusion, potassium permanganate drugs for processing organic slightly polluted water has obvious effect, the treatment effect is better than chlorine dioxide, best drug dosage determined for 1.5 mg/L; Static adsorption test shows that the commonly used water treatment filter material of natural manganese sand sand and to free manganese ion have adsorption effect, in raw water manganese ion concentration of certain conditions, natural manganese sand show good adsorption ability, the adsorption capacity of about 2.6 times the sand, the treatment effect is obviously superior to sand; Filter speed is too large, will lead to filter cycle is ending, this process to determine the most reasonable filter speed for 8 m/h; Test the raw water pH value is high, the effect is more obvious and manganese, filter water as a life after drinking water, so alkalinity too much, general groundwater pH value in 7.0, the basic can meet the joint process on manganese removal requirements; The raw water manganese in the concentration of the ions, the higher the manganese removal filter early, but with the growth of the filtering time, water manganese grew sharply concentration; The higher the temperature, high manganese removal the more obvious effect; Contact reaction time general control in 2 minutes; The water of the organic matter will affect manganese removal effect, the organic matter content is higher, the benefits of the effect of the more poor; Filter material reverse wash strength for 15 L/s. m~2, flush for about 15 minutes.Process design with 8 sets manganese removal filter filter tank, filter internal fill a natural manganese sand. Each strainer processing water for 800 m~3/h, 3 meters in diameter, equipment operation, filter speed control in the 6 always m/h or so, reverse wash strength control in 15L/sm~2. less than, flush for 20minutes, according to the source water manganese ion concentration changes, average 29 days flush again.This process solutions through the actual operation, showed the processing, the equipment is simple, impact resistant load ability strong, deal with stable discharging water, which verify the process in the treatment of the shallow dives, organic matter and the feasibility of manganese pollutants.