Analysis Of Chemical Characteristics Of Drinking Water And Water Safety Assessment In The New Rural Of Pengyang

Building a socialist new rural is a major strategic initiatives of implementing the scientific concept of development, co-ordinating urban and rural development and resolving the "three rural" issue. Irrigation works must first have it a focal point to improve the degree of indemnity of rural drinking water. It is given top priority to solve the rural drinking water security issues. Pengyang County is the model the temperate zone half arid continental monsoon climate, The precipitation is small, the transpiration rate is big. The water resources quantity is bad and few amount. The regional distribution is non-uniform. For many years, the water quality question has been affecting people's normal life and the physical and moral integrity, the socio-economic development of this count has been suppressed. Safeguards the countryside.drinking water security,that is the comprehensive construction affluent society's basic requirement, is also the socialism new rural reconstruction request inevitably. After finishing open country investigation and Multianalysis existence information and predecessor research results,the aticle has analyzed hydrochemistry ingredient characteristic and the regional distribution characteristic and the hydrochemistry component formation function mechanism systematically of the drinking water in the research area. And carries on the quality synthetic evaluation to the life drinking water quality. Provides the basis for the solution of life drinking water, the paper main research content and the conclusion is as follows:(1) By analyzing the hydrochemistry characteristic of the drinking water. The result indicated: 1) The average content of TDS in the surface water is 736.32mg/l,the primarily water is the HCO₃·SO₄-Na·Mg·Ca water, HCO₃·SO₄-Na·Mg water, The fluoride content is high, the average value is 1.06mg/L.2) The range of variation of TDS in the ground water is large and gradually reduce from north to south, fluoride content about 1mg/L, the primarily water is NaMg- multi-skill water. TDS and the fluoride content is the lowest in the cellar water,their average value is 184.84mg/L, 0.19mg/L, the primarily water is the HCO₃-Ca water.(2) After finishing multianalysis of hydrochemistry characteristic to the life drinking water then discussed the drinking water. TDS, total hardness, the hydrochemistry type, the great generosity component and the minor component region change rule, The result indicated: TDS reduces gradually from north to south; Total hardness gradually reduces and.separately from northwest, southwest to the southeast, Northeast. The ttansformation of Hydrochemistry type by the south and the northern HCO₃·SO₄ multi-skill water to the middle HCO3 water. Mg²⁺, Ca²⁺, the SO₄^2- content is high in the northwest andsouthwest, Na⁺, the NO₃^- content gradually reduce from north to south. The HCO₃^- content is high, does not have the obviously change rule, Cl^- in the north of research area gradually reduces from west to east and gradually increases from west to to east, F- content is low in the middle area.(3) Security appraisal to the life drinking water, first,F^-, Na⁺, the SO₄^2- of the drinking water in the research area that has exceeded the allowed figure very much, next is TDS, NO3"; The water quality overall is bad, the security drinking water only accounts for 39.8%.(4) Using component distribution model and equation of mass balance,did a simulation to the form function of hydrochemistry component of drinking water in the research area, has carried on the computation with the computer programming to the ground water component existence form and the mineral saturation index, obtains: The ground water hydrochemistry component is mainly from the albite dissolution and the sodium montmorillonite, the calcite precipitation. Next is the salty crag, the gypsum, the dolomite dissolution. The surface water hydrochemistry component is mainly from the albite, the salty crag dissolution and the sodium montmorillonite, the calcite precipitation, cellar water hydrochemistry component is mainly from the albite, the dolomite dissolution and the calcite, the sodium montmorillonite precipitation.