Reverse technology transfer of low cost and energy consuming wastewater treatment system in India to step out of traditional activated sludge process

帘式DHS（下流悬挂海绵）反应器在发展中国家已被研究用于污水处理，其不能产生适用于发达国家的良好水质。然而，即使DHS是非常具有成本效益和节能的过程，它揭示了UASB和DHS的系统具有良好的出水与活性污泥法相比，污泥产量更少。在这项研究中，新型DHS反应器，发达国家如日本试图通过转让在印度的污水处理实验积累的技术。

Curtain type DHS(Down-flow Hanging Sponge) reactor has been studied for sewage treatment in developing countries, which was not expected to produce a good water quality applicable for developed countries. However, even though DHS is very cost effective and energy saving process, it was revealed that a system of UASB and DHS had a good effluent comparable to activated sludge process with less sludge production. In this study, novel DHS reactor for developed countries like Japan was tried to develop by transferring the knowhow accumulated in sewage treatment experiments in India.