Using anaerobic granular sludge as the vicinal sludge,after 35 days operation,aerobic granular sludge was formed in sequencing batch reactor.This SBR system showed a very stable organic carbon and ammonium removal performance.The removal rate for organic carbon and ammonium could reach more than 95% and 99%,respectively.This systerm was applied to monosodium glutamate wastewater treatment.Under the conditions of organic volume rate of 2.4 kg/(m3·d) and ammonia volume rate of 0.24 kg/(m3·d),the COD,NH+4-N and TN removal efficiencies could reach more than 90%,99% and 85%,respectively.After treat monosodium glutamate wastewater,the sludge particle size reduced from 0.8~2.5 mm to 0.6~1.8 mm,the granule structure was more strength.

Monosodium glutamate production wastewater was treated by aerobic granular sludge process.The experimental results show that:The effect of the pre-setting anoxic section on denitrification is little,and the?denitrification process?is?mainly realized?in?the aerobic section;The optimum operation conditions?in aerobic section are aeration rate 0.38 m3/h and aeration time 5.5 h;When COD,ρ(NH3-N) and TN of the influent are 1 000.00-1 300.00,70.00-130.00,100.00-200.00 mg/L,the removal rates of COD,ρ(NH3-N) and TN can reach more than 90%,99% and 85% respectively;The organic compounds are mainly removed during the first 1.5 h of aeration,and they are stored in microorganism cells in the form of poly-β-hydroxybutyrate,which is the carbon source for denitrification.Comparing with the conventional SBR,the aerobic granular sludge process has a higher effect on the treatment of monosodium glutamate production wastewater.

Using anaerobic granular sludge as seed sludge,aerobic granular sludge was cultured in the sequencing batch reactor(SBR) fed with synthetic wastewater.After 35 d,mature granular sludge was obtained.The removal rates of COD and ammonia nitrogen were more than 95% and 99% respectively.The reactor was applied to monosodium glutamate wastewater treatment.When the volumetric loading rates of COD and ammonia nitrogen were 2.4 kg/(m3·d) and 0.24 kg/(m3·d),the removal rates of COD,NH+4-N and TN could reach 90%,99% and 85% respectively.The disintegration of granular sludge did not occur.Using anaerobic granular sludge as seed sludge and monosodium glutamate wastewater as influent,flocculent sludge was dominant in SBR after 60 d operation.The removal rates of COD,NH+4-N and TN were 85%,99% and 70% respectively.

According to the function monotony and closeness method in fuzzy identification,in this paper the application of Matter-element Analysis in comprehensive assessment of urban environment sustainable development was improved from two respects of distance function and correlation function.The improved distance function truly reflected the relationship between variables and interval;by substituting the correlation function with closeness function,the evaluation results were no longer negative so as to be easier to define the grade.By adopting the improved matter element method,a multi-stage matter-element model was established for comprehensive assessment of the urban environment sustainable development.The results showed that the improved method was faster to use,and reflected the urban environment sustainable development more objectively.