Abstract：
Large quantity of untreated sewage produced in earth pressure balancd shield tunneling will cause environmental pollution. Especially for construction in the urban area, the requirements for environmental protection are high and working site is narrow. Requirements concerning sewage discharge and construction in urban area can not be satisfied by adopting traditional multistage horizontal sediment tank for natural precipitation. This paper introduces a new sewage treatment system for shield tunneling by which the treated water can be directly discharged to urban sewer system and the treated clean water can be recycled, with very good social and economic benefits achieved.
2011, Vol. 48 