URBAN NIGHT SOIL TRANSPORTATION AND TREATMENT IN CHINA
With the growth of population, night soil had become an important influencing factor for ecological environment of China. The situation of urban night soil transportation and treatment in China was investigated and described. Depending on the China Urban Construction Statistical Yearbooks and other references, relative data of urban night soil are statistically treated. By correlation analysis and variance analysis, the chronological changes and their relations with other factors of the night soil transportation and treatment were studied. Over the last twenty two years, urban night soil transportation quantity was affected by the urban non-agricultural population and latrines. Urban night soil non-hazardous treatment quantity had significant positive correlation with the urban night soil transportation quantity. Urban night soil transportation quantity of Eastern region was higher than that of Central region and Western region, and urban night soil non-hazardous treatment quantity of Eastern region was highest. The urban night soil treatment model of China is diverse, co-treating night soil with sewage or establishing separate night soil treatment plant, but the level of technology is below that of some developing countries. Due to lack of enough urban environmental sanitation funds, large amount of urban night soil were untreated, and most untreated night soil had been discharged directly, which caused environmental pollution. The problems of urban night soil system of China were also discussed.
urban night soil transportation treatment China
Ting LIU Zhu-Lei CHEN Lie YANG
Institute of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
853-858
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）