He said the increase in midges had come from algae flourishing at the wastewater treatment plant's oxidation ponds after recent wet weather. "Algae are a food source for midges and the increase in ...

Currently, sewage water generated in the industrial township flows to three oxidation ponds at Sector-14 and one at Sector 22 for natural treatment through photochemical reaction in presence of ...

Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P.R. China ...