生物过滤法处理城市污水处理厂臭气  

Removal on odor of municipal sewage by biofiltration

作　　者：屈艳芬 叶锦韶[2] 尹华[2] 

机构地区：[1]广东省环境保护工程研究设计院,广州510140 [2]暨南大学环境工程系,广州510632

出　　处：《生态科学》2005年第1期18-20,共3页Ecological Science

摘　　要：对某城市污水处理厂沉砂池的臭气进行了生物过滤处理。生物过滤池滤料层高1.5m,滤料体积55m3,臭气处理量为12000m3·h-1。对除臭效果120d的监测和研究结果表明,进气中H2S浓度在1.96～4.63mg·m-3之间,NH3的浓度为2.21～5.68mg·m-3。处理后,出气中H2S的浓度在0.03～0.97mg·m-3间,去除率均达80%以上,NH3浓度最高值仅为0.46mg·m-3,低于1.0mg·m-3的一级排放标准。生物除臭复合微生物主要包括细菌、酵母和霉菌,其中细菌含量最高,每克干滤料细菌含量达1.8～3.1×108CFU。菌种鉴定结果表明,除臭菌主要有芽孢杆菌属(Bacillus)、假单胞菌属(Pseudomonas)、动胶菌属(Zoogloea)、不动杆菌属(Acinetobacter)、硫杆菌属(Thiobacillus)、酵母属(Saceharomyces)、假丝酵母属(Candida)、曲霉属(Aspergillus)、青霉属(Penicillium)、根霉属(Rhizopus)等种属的微生物。Biofiltration removal of odor emitted from grit-water separator in a municipal sewage plant was studied. The height and volume of biofilter media were 1.5m and 55 m3respectively, and the volume of odor gas to be treated was 12 000 m3·h-1. The 120d observation showed that the initial concentration of H2S and NH3 was 1.96~4.63 mg·m-3, 2.21~5.68 mg·m-3. After treatment, the concentration was reduced to 0.03~0.97 mg·m-3 for H2S and under 0.46 mg·m-3 for NH3. The removal ratio of H2S exceeded 80%, and the concentration of NH3 in outflux was better than level 1 National Standard. Odor removal strains consisted of bacteria, yeast and mould, such as Bacillus, Pseudomonas, Zoogloea, Acinetobacter, Thiobacillus, Saceharomyces, Candida, Aspergillus, Penicillium,and Rhizopus, among which bacteria was dominant and reached 1.8~3.1×108 CFU per gram dry filter media.

关 键 词：生物除臭 生物过滤法 城市污水 硫化氢H2S 氨NH3 

分 类 号：X512[环境科学与工程—环境工程]