摘要
采用厌氧膜生物反应器(AnMBR)对乳品废水进行处理,装置连续运行100d,研究了不同进水COD_(Cr)浓度(3 000、5 000、7 000、9 000 mg/L)对出水水质及反应器内污泥特性的影响,并与常规厌氧生物反应器的处理效果进行对比。结果表明,温度为35℃,HRT为48h时,COD_(Cr)去除率和氨化率随着进水COD_(Cr)浓度的降低而升高,最高可达89%和38%以上。TN去除率随着进水COD_(Cr)浓度的增加先增高后降低,在7 000 mg/L条件下,去除率为55%。装置在运行过程中,MLVSS/MLSS平均值约为0. 7,SVI值在60～80 m L/g的范围内,污泥具有良好的活性与沉降性。AnMBR与常规厌氧生物反应器相比,在处理高浓度乳品废水时运行更加稳定,耐冲击负荷能力更强,出水水质更好。
The anaerobic membrane bioreactor （AnMBR） was used to treatment dairy wastewater, and the effects of different CODCr influent concentration （3 000, 5 000, 7 000 and 9 000 mg/L） on effluent water quality and sludge characteristics in AnMBR were investigated, and the performance of AnMBR was compared with conventional anaerobic bioreaetor under the same conditions. The result showed that at the temperature of 35 ℃, HRT was 48h, the CODCr removal rate and ammonifieation rate increased with the decrease of CODCr concentration, can reach 89% and 38% , respectively. The TN removal rate increased first and then decreased with the increase of influent CODCr concentration, and reached the maximum removal rate of about 55 % when the influent CODCr concentration was 7 000 mg/L. During treatment process, the MLVSS/MLSS was 0. 7 on average, the SVI value was in the range of 60 -80 mL/g, which indicted a good activity and sedimentation of sludge. In addition, by comparing with conventional anaerobic bioreaetors, AnMBR runs more steadily and exhibited a stronger ability to mitigate shock load in the treatment of concentrated dairy wastewater.
作者
李鹏芳
刘梦
张科亭
颜明磊
金春姬
LI Peng-fang;LIU Meng;ZHANG Ke-ting;YAN Ming-lei;JIN Chun-ji(Key Laboratory of Marine Environment ＆ Ecology,Ministry of Education,Ocean University of China,Qingdao,Shandong 266100,China;Minglang Environmental Engineering Co.,Ltd.,Qingdao,Shandong 266061,China)
出处
《四川环境》
2018年第5期12-18,共7页
Sichuan Environment
