At the biologicaltank and the secondary clarifier of LongYan waste water treatment plant, we solve the problems by adopting the non cohesive prestressed force.
龙岩污水处理厂生物池、二沉池采用无粘结预应力砼结构，解决了这一问题。
2
The biological purification tank combined of artificial wetland technique and the bio-contact oxidation method was applied for malodorous river water in central urban region of Shanghai City.
将人工湿地技术与生物接触氧化法相组合的生物净化槽应用于上海市中心城区黑臭河水净化。
3
By means of setting up an anaerobic tank in front of DAT-IAT, biological degradation performance and phosphorus removal efficiencies are studied with municipal sewage.