The return flights can also be made use of to collect some things like floatingsludge, rubbish and oil slick on the water surface.
并可利用在水面上的回程刮板收集漂浮在水面上的浮渣、垃圾及浮油等。
2
The complex surfactant and emulsifying technology were applied to improve the fluidity of the condensed floatingsludge from the wastewater treating plant of refinery.
采用表面活性剂复配和乳化技术，对炼油厂污水处理场的浓缩浮渣的流动性进行了改进研究。
3
There were anti-nitrification floatingsludge, aged activated floatingsludge and floatingsludge from biological foam in the final settling basin of municipal second stage sewage treatment plant.