Study And Application On New Sequencing Batch Reactor

In the text the method of draining in the top and influent in the bottom was studied. To get the best effect controlled the speed of influent was controlled. The high-concentrated organic soybean wastewater was treated by SBR in order to get the draft parameter of the reactor. The dynamics of substrate removal and the removal of nitrogen was studied in SBR. The high-salty organic wastewater was simulated.The result showed that:The experimental research of soybean wastewater by SBR showed that reliable and stable treatment results could be achieved. The method of draining in the top and influent in the bottom was feasible. The speed of influent was 80L/h, the best ratio of draining was 3/5.Aeration time and aeration quantity has strong influence on treatment efficiency. When the MLSS concentration was about 4000mg/L, the removal rate of COD was high. The draft parameter of the reactor: the time of influent (effluent) was 104 min, aeration 8h, settle 1.5h, The removal rae of COD was higher than 85%, when the COD concentration of influent water was in level of 300 to 2000 mg/L. The increasing of the number of alternate anoxic-oxic, the removal rate of nitrogen was increased.The effection of inorganic salts (NaCl) was studied. The removal rate of COD and NH3-N was declined when the salinity was overpass 10 g/L. The removal rate of COD and NH3-N was very low when the saltinity was 30g/L.The ability of degration of the system was declined when more salt was added to the system, and after some time the system would recover to the beginning. The higher the saltinity was, the longer the recvering time was. The cultivating of the activated sludge was very necessary in the system of high salt SBR.