摘要
本文报导了采用兼氧—AB工艺处理屠宰废水(400—2000m^3/d)的工艺流程、工艺特性,运行中的微生物学机理与应用效果。研究表明,兼氧污泥以产酸菌为主,容积负荷0.5kgCOD/M^3·d,COD去除31.2％,BOD_5/COD从0.65上升到0.73;A级污泥由原核生物组成,有较多的游离细菌,常有丝状菌,污泥负荷较高(4.78kgBOD_5/kgMLSS·d),COD去除53.4％;B级污泥以分枝菌胶团为主,原生动物(钟虫,累枝虫),多且活跃,污泥负荷较低(0.73kgBOD_5/kgMLSS·d),COD去除54.7％。处理后的水质达到国家《GB8978—88》排放标准的要求。
This paper reported the technology process, technology character, microbiology mechanism and operation effect of faeultative anaerobic-AB technology process in treating slaughterhouse wastewater. The study indicated that acidgenic bacteria occupied a dominant position in faeultative sludge. The volume loading rate was 0.5 kg COD/m^3·d. COD removal efficiency was 31.2％. BOD_5/COD raised from 0.65 to 0.73, The sludge of A stage was constituted of procaryote in which were many free and filiform bacteria. The sludge loading rate was 4.78 kg BOD_5/kg MLSS·d. COD removal efficiency was 53.4%. The sludge of B stage was mainly constituted of mycobacteria. There were also many living protozoa (vorticella, epistylis). The sludge loading rate was low (0.73 kg BOD_5/kg MLSS·d). COD removal efficiency was 54.7％. The quality of the effluent from the treatment plant has demanstrated that this process has no problem in meeting the effluent requirement ofthe goverment--GB 8978-88.
出处
《重庆环境科学》
1993年第5期8-12,共5页
Chongqing Environmental Science
