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Study on Rural Drinking Water Safety Evaluation of Ningxia

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Tutor: YaoQingYun
School: Ningxia University
Course: Water Resources and Hydropower Engineering
Keywords: Rural drinking water safety,index system,weights,comprehensive evaluation
CLC: S277.7
Type: Master's thesis
Year:  2014
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Abstract:
Ningxia is our country northwest arid area, rural drinking water safety issues directly affect the health, safety and social stability. Therefore, to solve the problem of rural drinking water safety is the urgent need to achieve sustainable economic and social development in Ningxia. On the rural drinking water safety of evaluation is scientific and reasonable, is the only way which must be passed to solve the problem of rural drinking water safety. In this paper,combined with the actual situation in Ningxia, using two kinds of methods to assess the security situation,has for relevant departments to provide theoretical evidence for targeted for rural drinking water safety. The specific contents are as follows:The main research contents:(1) based on the established suitable for Northern Ningxia Yellow River Irrigation District, central arid zone and southern mountainous area of three sets of evaluation index system, using AHP and entropy method are respectively the weight of each index in the system was calculated.(2) the situation of drinking water safety in rural areas of Ningxia is divided into five levels (¢ñ-¢õ), using the fuzzy comprehensive evaluation method and the evaluation and comparison of fuzzy matter-element method respectively to three districts of Ningxia rural drinking water safety situation, according to the result of analysis, the similarities and differences.(3) counties of Ningxia using the fuzzy matter element method (city, district) for evaluation of rural drinking water safety situation, were calculated by the county (city,district) level of security, and combined with the CorelDRAW drawing software, directly reflect the counties (city, area) of the rural drinking water safety situation.(4) for rural drinking water safety level in the high area (V represents danger), analyses its reasons and try to solve the method of shallow.Conclusions:(1) through the fuzzy comprehensive evaluation method based on the combined weight and comparison based on the conclusion of fuzzy matter-element method combined weight of view, central arid zone,mountain area in the South and north of the Yellow River irrigation area of rural drinking water safety situation for the basic security. To achieve the basic security and above the county (city, district) accounts for72%of the whole region (Northern accounted for40.3%, accounted for9%, Central South accounted for22.7%), unsafe status of county (city, district) accounts for28%of the whole region (Northern accounted for16.8%, middle11.2%). Safety of drinking water in Ningxia District, from an overall perspective:the northern Yellow River Irrigation District in southern mountain area of>> Middle Arid zone.(2) is determined by the combined weight of rural drinking water safety impact of7evaluation indexes the biggest respectively:residential water resource, water is not up to the standard of drinking fluoride exceed the standard, the proportion of the population, the proportion of the population drinking brackish water,concentrated water supply coverage, dispersed water supply coverage and convenient water level. Accordingly,for the relevant departments to provide theoretical basis for the status of rural drinking water safety improvement.
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