Brief Analysis on Overall Process Method of Implementation and Control of Urban Sludge Land Utilization
At present,the treatment technology of urban sludge is gradually mature in China.The sludge consumption has become the weakness in the overall process of urban sludge treatment and disposal.The land use is a kind of sludge disposal method based on resource utilization.The application of this method is the key to provide the proper nutrient to the plant growth on the basis of controllable pollution.Besides,the land use of sludge is the multi-industry action.At present,there is no the overall process of technical and management support in China.Therefore,concentrated on the overall process of admittance,application and supervision of sludge product the standards and specifications for the sludge,agriculture,forestry,soil and other fields are systematically sorted out At the same time,the requirements of sludge product quality standards for different control indicators are compared.Based on the demands of plant nutrient and pollutant control,the calculation principle and method of sludge product application rate are summarized.Combined with the relative requirements of soil quality control,the control process and method of sludge land use are explored.
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