Rural Decentralized Sewage Treatment in Zhejiang Province, China:Progress, Problems and Requirements

摘要

In China, there was about 148 million tons of rural sewage discharged in 2017. With the implementation of"Action Plan for Prevention and Control of Water Pollution", the requirement for rural decentralized sewage treatment was greatly increased nationwide. It is estimated that at least 60 % of the rural sewage be treated in the next 5 years, leading to a huge market of over RM￥100 billion. Zhejiang province is one of the most densely-populated and developed district in China, taking account for 1.10% of the land area, 3.74% of the population and 6.71% of the GDP in the nation. Under the pressure of environment, Zhejiang is leading China's move to treat rural sewage. By the end of 2017, about 95,000 of rural sewage treatment facilities have been constructed in nearly 21,000 villages which accounted for more than 90% of the total villages in the province. After almost two years of scalable operation and management, many problems have been exposed. Especially, it is a big challenge for the government and enterprises to deal with so huge number of highly-scattered rural sewage treatment facilities at a limited running cost. The study aimed to investigate on the current status, problems and possible solutions of rural decentralized sewage treatment in Zhejiang province.