Analysis Of Microbe Community Development In Sulfate-Reducing Reactor Under Various Process Conditions

It is a useful way that the high strength sulfate waste water was treated with by the acidogenic phage reactor using the two-phase anaerobic biological treatment process . The acidogenic process may remove more sulfate recur to FAB and SRB which can coordinated-metabolize. The acidogenic sulfate-reducing reactor is essentially man-made microorganism ecosystem. Therefore , it can directly affect the ability and level of the wastewater treatment to understand the law of the microorganism ecosystem. The method of molecular development basing the genetic fingerprinting technique make it possible to understand the microorganism community dynamics in the process system. In this work , the operation effectiveness of acidogenic sulfate-reducing reactor affected by the sulfate and alkalinity was studied and discussed. The microorganism community dynamics influenced by the alkalinity and sulfate was analysed with the help of the SSCP .At the same time, the operation effectiveness of sulfate reducing reactor and the microorganism community dynamics reacted by the carbon resources was studied as regards the complete oxidative sulfate-reducing.During studying the effect of the alkalinity , choosed the glucose as carbon resource and 2:1 as carbon sulfate ratio . The reactor has started up for 17 days under natural alkalinity. The removed effectiveness of sulfate was only 40% which was not steady and increasingly decreaced. When the alkalinity of water intake was adjusted to 1300～1500mg/L,The removed effectiveness of sulfate was steadily heightened and ultimate efficiency as 60%. After the alkalinity was increased ,the reactor run smoothly .in the system, the Raoultella,Kluyvera,Dysgonomonas,Quinella and Citrobacter composed of superiority community. The adjustment of alkalinity hardly affect the residental colony such as Dysgonomonas,Quinella,Citrobacter . Bacteroides which was superiority FAB when alkalinity was not controlled is replace as the alkalinity was increased. Raoultella and Kluyvera which was secondary colony occupy the dominate position along with the rising of the alkalinity. The quantity of Raoultella decreased rapidly when the water intake contain no sulfate. Raoultella directly...