Technical Innovation of Land Treatment Systems for Municipal Wastewater in Northeast China

• Published in: Pedosphere Vol. 16; no. 3; pp. 297 - 303
• Main Authors: ZHOU, Qi-Xing, ZHANG, Qian-Ru, SUN, Tie-Heng
• Format: Journal Article
• Language: English
• Published: Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016 China 01.06.2006; Graduate School of the Chinese Academy of Sciences, Beijing 100039 China%Shenyang Key Laboratory of Environmental Engineering, Shenyang University, Shenyang 110010 China; Shenyang Key Laboratory of Environmental Engineering, Shenyang University, Shenyang 110010 China; College of Environmental Science and Engineering, Nankai University, Tianjin 300071 China%Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016 China
• Subjects: China, People's Rep; soil ecosystem; land treatment system; municipal wastewater; soil purification
• DOI: 10.1016/S1002-0160(06)60055-6
• ISSN: 1002-0160

On the basis of ecological principles including holistic optimization, cycling and regeneration, and regional differentiation, land treatment systems (LTSs) for municipal wastewater were continuously explored and updated in the western Shenyang area and the Huolinhe area, China. Intensified pretreatment, addition of a man-made soil filtration layer, and use of an ecologically diversified secondary plant cover were proved to be technically feasible. Hydraulic loading was determined according to the assimilation capacity of soil ecosystems, thus ensuring safe operation of wastewater treatment. This modernized and alternative approach to wastewater treatment had been widely applied in middle-sized and small cities and towns of Northeast China, and these innovative systems in some areas had indicated favorable ecological, social, and economic benefits.