英语翻译Physical Methods include processes where no gross chemical or biological changes are carried out and strictly physical phenomenaused to improve or treat the wastewater.Examples would be coarse screening to remove larger entrained objects

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英语翻译Physical Methods include processes where no gross chemical or biological changes are carried out and strictly physical phenomenaused to improve or treat the wastewater.Examples would be coarse screening to remove larger entrained objects

英语翻译Physical Methods include processes where no gross chemical or biological changes are carried out and strictly physical phenomenaused to improve or treat the wastewater.Examples would be coarse screening to remove larger entrained objects
英语翻译
Physical Methods include processes where no gross chemical or biological changes are carried out and strictly physical phenomena
used to improve or treat the wastewater.Examples would be coarse screening to remove larger entrained objects and
sedimentation (or clarification).
In the process of sedimentation.physical phenomena relating to the settling of solids by gravity are allowed to operate.Usually this consists of simply holding a wastewater for a short period of time in a tank under quiescent conditions,allowing the heavier solids to settle.and removing the "clarified" effluent.Still other physical phenomena are used in the treatment which consists of filtration.Here wastewater is passed through a filter medium to separate solids.An example would he the use of sand filters to further remove entrained solids from a treated wastewater.Certain phenomena will occur during the sedimentation process and can be advantageously used to further improve water quality.Permitting greases or oils,
for example·to float to the surface and skimming or physically removing them from the wastewaters is often carried out as a part of the overall treatment process.

英语翻译Physical Methods include processes where no gross chemical or biological changes are carried out and strictly physical phenomenaused to improve or treat the wastewater.Examples would be coarse screening to remove larger entrained objects
物理方法包括没有大量化学性或生物性变化的工艺,或严格采用物理方法改良或处理水质的方法.例如,采用筛子滤除夹带的物体,以及沉淀（澄清）.在沉淀过程中,利用固体在重力作用下沉淀到底部这个物理现象.通常这包括将污水在罐中简单地静置一段时间,使较重的固体沉淀,并移除“澄清的”废水.还可以采用包含了过滤的其他物理现象.这时,污水通过一个过滤介质,将固体分离出去.比如采用砂子进一步滤除经处理的污水中夹带的固体.有些物理现象在沉淀过程中出现,或以利用它进一步提高水质.例如,允许油或油飘浮在水面,并将其撇去,或采用物理方法将其去除,这些都是整个处理过程中的一个环节.
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