[Treatment performance of submerged membrane bioreactor treating brewery wastewater].
Under the condition of keeping the influent COD: TN: TP = 100:5:1, submerged MBR has an excellent treatment performance for COD and NH4+ -N, and the removals for COD and NH4+ -N are both beyond 90% under steady state, in addition, MBR has a strong adaptation ability for shock organics loading rate. When the organic loading rate was increased from 0.27g/(g x d) to 0.54g/(g x d) suddenly, there was no big fluctuation for COD in effluent. According to the results of GC/MS, the remaining organics in effluent was mainly alkyl hydrocarbon, and the membrane modules played a main role in stabling permeation quality. When the sludge in MBR was at the multiplication stage, the system has a removal of about 40% for TN because of biosynthesis and simultaneous nitrification and de-nitrification, in addition, a certain removal for TP was also observed. When the sludge was at the steady stage, the removal for TN decreased to about 30% due to simultaneous nitrification and de-nitrification, whereas, the removal efficiency for TP was very little, and sometimes even below zero.
Zhang
Li-qiu
LQ
School of Municipal and Environmental Engineering Harbin Institute of Technology, Harbin 150090, China.
Feng
Li
L
Lü
Bing-nan
BN
Zhang
Xiao-fei
XF
D001515:Beer; D019149:Bioreactors; D008567:Membranes, Artificial; D014865:Waste Disposal, Fluid / Q000379:methods*; D018505:Waste Management / Q000379:methods*; D018508:Water Purification / Q000379:methods*
D008567:Membranes, Artificial