莱钢焦化厂生物脱氮系统优化实践  

Optimization Practice of Biological Denitrification System of the Laiwu Steel's Coking Plant

作　　者：徐红 翟瑞津 刘民 王耀臣 

机构地区：[1]莱芜钢铁股份有限公司焦化厂,山东莱芜271104

出　　处：《山东冶金》2011年第5期173-174,共2页Shandong Metallurgy

摘　　要：莱钢焦化厂1#生物脱氮系统在运行过程中存在污泥脱水效果差、加碱成本高、二沉池污泥上浮等问题,通过实施带式浓缩压滤机代替螺压脱水机、液碱代替纯碱、刮泥机改造等技术措施,解决了上述问题。系统优化后运行稳定,沉降比由60%～70%降至20%～40%,加碱成本降低了38%,出水悬浮物由90mg/L降至30mg/L。There were some problems in 1# biological denitrification system of Laiwu Steel＇s Coking Plant such as poor dewatering effect of sludge,high cost of sodium carbonate and floating upward of sludge in secondary sedimentation tank. The measurements of using thickener-press filter instead of screw press filter,using sodium hydroxide instead of sodium carbonate and transformation of sludge scraper were carried out. The questions were solved. The system ran stably and the indices were improved. SV30 was reduced from between 60% and 70% to 20% and 40%,the cost of alkali was reduced 38% and the suspended matter of effluent was reduced from 90 mg/L to 30 mg/L.

关 键 词：生物脱氮 带式浓缩压滤机 液碱 刮泥机 

分 类 号：X784[环境科学与工程—环境工程]