Abstract:After investigating sources of N and P pollution in a rural area of southern China, it was found that the ratios of amounts of N and P pollution from RDW over those from crop were about 11.4% and 11.1%, respectively. Corresponding values were 0.44% and 0.55% RDW over crop plus breeding. Recently, RDW treatment systems, belong to decentralized processing technologies, have been formed initially. They are different from municipal wastewater treatment technologies. It is found that each effluent COD of decentralized processing technologies was lower than 60mg/L, especial for aeration, by study for operation of demonstration projects and investigation for other projects. However, all decentralized processing technologies have not reached the purpose for the removal of N and P, the highest concentration of effluent TN and TP was 28mg/L and 1.8mg/L, respectively. Therefore, this paper suggests that the main objective of rural wastewater treatment should be eliminating the “black and stink” of waterbody in rural area resulted from RDW discharge by removing organic pollutants, rather than removing N and P which is not necessary and difficulty to be achieved.
马鲁铭, 王云龙, 刘志刚, 王红武. 南方农村生活污水处理目标及工艺模式探讨[J]. 中国环境科学, 2013, 33(1): 118-122.
MA Lu-Ming, WANG Yun-Long, LIU Zhi-Gang, WANG Hong-Wu. Discussion on objective of rural domestic wastewater treatment and technology system in Southern China. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(1): 118-122.