摘要
采用单相中温升流式厌氧污泥床 (UASB)反应器厌氧生物工艺处理含有有毒难降解有机物的林可霉素生产废水 .当进水COD 80 0 0～ 1 4 0 0 0mg/L ,HRT约 1 0h时 ,COD容积负荷可达 2 0～ 35kg/(m3·d) ,COD去除率为50 %～ 55% .适时调整并维持较高的表面水力负荷 [0 .2～ 0 4m3/(m2 ·h) ]、较高的进水有机基质浓度 (COD为2 0 0 0～ 30 0 0mg/L)和污泥COD负荷 [0 2～ 0 5kg/(kg·d) ],并适当延长启动驯化时间可培养出沉降性好、污泥活性较高的颗粒污泥 .废水厌氧生物降解动力学符合Monod方程 ,动力学常数Vmax=1 3d- 1,Ks=81 33mg/L .废水中不可生物降解物质占总COD的比例约为 30 % ,这是废水COD去除率偏低的重要因素 .
The high strength Lincomycin production wastewater containing toxic and refractory substances treated by lab scale mesophilic UASB reactor was described. When the reactor was operated in influent COD 8000～14000 mg/L and HRT 10h, the volumetric loading rate and COD removal rate could reach 20～35 kg/(m 3·d) and 50%～55%, respectively. The granular sludge might be formatted by using a bit longer acclimation time, adjusting and maintaining fairly high surface hydraulic loading rate of 0 2～0 4 m 3/(m 2·h), influent COD of 2000～3000 mg/L and sludge loading rate of 0 2～0 5 kg/(kg·d). The anaerobic kinetic constants of V max and K s for the wastewater treatment were 1 3 d -1 and 8133 mg/L, respectively. The non biodegradable substances accounted for about 30% of total COD, which was the important factor of relative low COD removal rate for the wastewater.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2001年第2期82-86,共5页
Environmental Science
基金
国家自然科学基金!资助项目 (4 96 2 5 10 1)
