Po Saponification Wastewater Treatment Processes And Equipment

PO(propylene oxide) wastewater in the production of epoxy compound often has high density of chlorine substances, and its [Cl~-], [SS] and other organic chloride concentration are also very high.The generating process of PO wastewater and the current situation of treating method at home and abroad are introduced firstly. According to the treating methods of PO wastewater in BinZhou Chemical Engineering Factory, a new technology called Active Sludge - Biofilms process is studied in detail, at the same time, the pre-process of wastewater, the treatment of mud and other treating process are analyzed, working methods of some key relevant facilities are also studied.Based on analyzing the complete treating outfit, the Sludge Scraper which is the key machine in the complete treating technology is studied and analyzed with emphasis. Because about forty five days is needed in domesticating and stabilizing the active sludge---Time is very long, meanwhile, this process is very complicated and thus the cost is very high, the active sludge in the Second Settling Tank needs to be refluenced to increase the efficiency. Then, the sorts, characteristics and operation principle of the Log Spiral Curve Sludge Scraper are analyzed, while, the dynamic property of it is studied in detail. As an important parameter, the (3 angle of scraping plank is optimized by a lot of experiments. Finally, the improving proposal of sludge scraper is put forward.