摘要
以国电银河水务青岛开发区污水处理厂为例,按照m(生物泥)︰m(厌氧泥)︰m(化学泥)︰m(混合泥)=8︰1︰2︰5的比例进行优化配比。在保证固体回收率达到92%的前提下,利用带式脱水机将剩余污泥含水率由97%降至79%,再通过板框压滤机降至60%,最终达到深度减容目的,同时保持吨干泥药耗低于业内均值3 kg。这类优化配比方式适用于复杂多变的剩余污泥深度减容,相比原先将不同泥质的剩余污泥进行逐步单一减容的工序,此法更有利于污水处理厂降本增效,具有推广应用的价值。
This paper takes the Sewage t reatment plant of the Guodian galaxy water Qingdao development Zone as an example, followed by the ratio of 8︰1︰2︰5（biological sludge： anaerobic sludge： chemical sludge： mixed sludge） to achieve optimization and proportioning. Under the condition that the recovery of solid reaching 92%, the belt dewatering machine was used to decrease the Sludge moisture content from 97% to 79%, and then the plate and frame filter press was continued to reduce to 60% to achieve the depth reduction of capacity purpose and keep the dry mud drug consumption perton lower than the industry average at 3 kg. This kind of optimized proportioning method is suitable for the complex and changeable residual sludge depth reduction. Compared with the original process of make different property surplus sludge gradually and single to reduction, this method is more beneficial for the sewage treatment plant to reduce the cost and it also has the value of popularization and application.
出处
《环境科技》
2015年第5期1-3,共3页
Environmental Science and Technology
关键词
不同泥质
固体回收率
含水率
深度减容
吨干泥药耗
Different sludge property
Solid recovery rate
Moisture content
Depth reduction
Dry mud drug consumption per ton
