Experimental Study Of M Irco-pollutent In Water Treatment By Ballasted Flocculation Magnetic Technical

Water is the source of life, all life is the material basis for survival. With the improvement of people’s living standard and the development of society, the water quality is more and more strict. But the reality is, in recent years as the city modernization and industrial production’s unceasing development, the scope of human activities continue to expand, large amounts of sewage and industrial wastewater has been discharged into the lake, rivers and soil, drinking water source pollution in aggravate, serious harm to the ecological environment, the existing water works water difficulty more and more.some tap water was variation trend. Effective treatment of micro polluted raw water, the preparation of high quality drinking water in our country has become one of the challenges facing. Nowadays, the treatment of micro polluted raw water in many ways (such as chemical method, pHysical and chemical, microbiological method etc.). Practical applications of these methods are also quite extensive. In order to explore the more effective treatment methods, this paper mainly loaded magnetic flocculation technology for treatment of micro polluted raw water in COD and turbidity was studied, for this technology in preparation of drinking water project application to provide technical reference.The main content of the research are:the use of static beaker experiment of polyaluminium chloride and ferric sulfate from Micropolluted Raw Water by COD and turbidity removal factor as well as its most appropriate dosing conditions, then through the comparison of technology and economy, optimum flocculant, and magnetic particle binding, research the best dosing conditions, then further experiments, according to the orthogonal experimental results and the actual situation of water plant process design, the project budget and cost analysis.The results of the study show that:(1) polymerization aluminum chloride to micro polluted raw water in CODMn and turbidity of the optimum experimental conditions:dosage is60mg/L, static settling time is20min, pH7.5, temperature had little effect, and the room temperature.(2) polymerized ferric sulfate to the micro polluted raw water in CODMn and turbidity of the optimum experimental conditions:dosage is100mg/L, static settling time is30min, pH7.5, temperature had little effect, and the room temperature.(3) for technical and economic comparison, the optimal coagulant polyaluminum chloride, PAC and magnetic combined, the optimum experiment conditions:dosage is500mg/L, static settling time is15min, pH7.5, temperature had little effect, and the room temperature.(4) by orthogonal experiments the optimum operating condition PAC dosage is60mg/L, static settling time is15min, magnetic powder dosage is500mg/L, pH7.5.(5) on the design of the process of project budgetary estimate, water plant water for20000m/D, for a total investment of28,106,300yuan, of which:the construction project cost to be21,757,100yuan; other costs454,9100yuan; reserve cost is1578400yuan; start-up funds for221,700yuan.(6) at the end of the processing technology and the cost analysis, the analysis results:annual water cost is7,580,000yuan, operating costs6,240,000yuan, unit water supply cost is1.04yuan, unit operation cost is0.85yuan.