On December 22nd 2008, a holding pond at a Tennessee Valley Authority coal-fired power plant ruptured, sending 978m gallons (3,702m litres) of ash into a nearby river, where it turned to sludge.
2008年12月22日，田纳西州流域管理局一座煤电厂的洗煤池溃口，向附近一条河流排入9.78亿加仑（3.702亿升）洗煤水，其中的煤灰在沉淀为淤泥之后被运往尤宁敦郊外的一个填埋点—亚罗海德（Arrowhead）。
Analyze sludge movement in the course of the mud scraper in concentrated pond operating, changes the straight line trowel to the curve trowel, raises the mud scraper working efficiency.
分析浓缩池刮泥机运转过程中污泥运动情况，改直线刮泥板为曲线刮泥板，提高了刮泥机工作效率。
The effects of controlling acidity of cathode pond solution and adding complex agents on Cd electrokinetic processes in actual sewage sludge were investigated.
采用实际城市污泥为研究对象，通过控制阴极液酸度和添加络合剂，考察了镉的动电过程。
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