Eutrophication of water quality of raw water results in algae multiply greatly, affects usual water treatment.

水源水质富营养化导致藻类繁殖，严重影响了常规水处理。

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This simple technique may be used to treat micro-polluted raw water and can remove organic pollutants and ammonia efficiently.

该工艺具有工艺简单、适合于处理微污染水，能够有效地去除有机物和氨氮。

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Biological pretreatment technology is an economic and efficient method to remove ammonia - nitrogen in micro - polluted raw water.

生物预处理是去除微污染源水中氨氮的一种经济有效的方法。

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Other developing countries also face problems with inequitable pricing and raw water shortages - which is what really keeps communities from having clean,piped water.

VOA: standard.2010.08.04

"The main issue is we don't have enough raw water for Jakarta.

VOA: standard.2010.08.04

Some European regulations will have to be altered in order to ensure the efficient use of energy, water and raw materials, and to protect the natural environment.

FORBES: Sad Stupidity at the European Commission

Companies that escaped damage from the earthquake and ensuing tsunamihave to cope with rolling power outages and disruptions to supplies of water, raw materials and transportation, suggesting the road to reconstruction could be long and halting.

WSJ: Firms in Japan Assess Quake Damage

But unlike other alternative energy sources, such as sun or wind power, there's nothing fickle about the availability of the key raw ingredients--fresh water and sea water.

FORBES: Getting Power From Salty Water