摘要
采用浸没式膜生物反应器 (SMSBR)处理焦化废水的试验结果表明 :膜的截留作用可使硝化菌在反应器内富集而有利于提高系统的硝化能力 ,其去除氨氮的最高负荷为 0 .19kg/(m3 ·d) ,出水氨氮 <1mg/L(去除率为 99%) ;泥龄长可能使微生物的代谢产物或其他大分子物质积累 ,从而抑制硝酸盐细菌的活性 ,导致NO- 2 积累而有利于短程脱氮的进行 ,但泥龄过长也会影响亚硝酸盐细菌的活性 ,从而影响对氨氮的处理效果。整个系统的硝化效果主要受温度、pH值、DO、冲击负荷等因素的影响。
A submerged membrane sequencing batch bioreactor was used to treat coke wastewater. Long running performance showed that due to the membrane interception, the nitrobacter is enriched in reactor in the interest of improving the nitrification rate; the maximum ammonia nitrogen loading can be 0.19 kg/(m 3·d) with effluent ammonia nitrogen < 1 mg/L (removal rate 99%). Long sludge retention time may result in the accumulation of metabolic products and high molecular materials, and thus inhibiting activity of nitrate bacteria (nitrobacter) and causing accumulation of NO - 2, which is beneficial to the running of short-cut denitrification. However, too long retention time will affect the activity of nitrite bacteria (nitrosomonas), detrimental to the treatment effect of ammonia nitrogen. The nitrification effect in the whole system is mainly influenced by temperature, pH, DO, and shock loading.
出处
《中国给水排水》
CAS
CSCD
北大核心
2002年第7期8-11,共4页
China Water & Wastewater
基金
教育部科研基金
青年骨干教师基金资助项目
关键词
SMSBR
焦化废水
硝化
NO2^-积累
短程脱氮
SMSBR
coke wastewater
nitrification
NO - 2 accumulation
short-cut denitrification
