对大庆油田石英砂过滤器结构进行改造，并应用悬浮污泥过滤技术对油田污水进行了深度处理，试验取得了良好的处理效果。
With the structural modification of quartz sand filter in Daqing oil field, and using the suspended sludge filtration in treating oilfield wastewater, the good experimental results are obtained.
最后，用悬砂稠化剂进行了悬浮山砂的实验，制备出具有优良防灭火性能的稠化砂浆。
At last, experiments of suspending sand with thickener were done and excellent sand slurry for mine fire control was prepared.
多介质过滤器：用无烟煤、石英砂过滤介质去除水中的固体悬浮物。
Milti - medium filter: filter the solid suspend thing use the anthracite, quartzite filter medium.
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