Analysis of Seepage Field of Polluted Water in Agricultural Planting Soil in Ordos Basin

  • Yu-zhe Zhang

Abstract

The Ordos Basin is an important energy and chemical base in China and it is rich in mineral resources. However, due to the climate drought, rare precipitation, strong evaporation, etc., the basin is very scarce, and how to effectively use and protect water resources is very important. In addition, agricultural planting soil is the key to agricultural harvesting. With the development of industry and agriculture, industrial wastewater and domestic garbage increase, water bodies are polluted, resulting in more and more polluted water content in agricultural planting soil. This has led to serious impacts on the development of agricultural cultivation, and agricultural harvesting is not ideal. The large-scale coal resource exploitation in the Ordos Basin has led to changes in the chemical fields in the waters, such as increased sulfate content, deterioration of water quality, hardening, and serious nitrification of groundwater. Therefore, in view of the water pollution in the basin and the protection of agricultural planting crops, it is urgent to analyze the seepage field of polluted water in the agricultural planting soil in the Ordos Basin. Firstly, the collection of natural water conditions and human activity data, water samples from the agricultural soil in the basin are collected and detected. Secondly, it analyzes the water chemistry characteristics of agricultural planting soil and evaluates its water quality. Finally, the problem of seepage field of polluted water in agricultural planting soil is analyzed. The research on three aspects of polluted water in agricultural planting soil shows that the polluted water in the agricultural planting soil is neutral-weak alkaline water, and the water quality in the region is poorly evaluated, which does not meet the agricultural planting standards. The results of seepage field analysis of polluted water bodies based on AHP analytic hierarchy method show that the hydraulic relationship between W3 and nitrate pollution points is the closest, and the comprehensive evaluation value is 67.3. The results are consistent with the laboratory test results, and the comprehensive evaluation of the analytic hierarchy method can effectively and accurately evaluate the seepage of polluted water bodies.

 

Published
2019-08-25