大规模的粉煤灰的充填会产生高碱性的矿山废水，与此同时，它也减少流向地表水系的废水中的污染负荷。

Deposing of fly ash is in a great degree connected with development of high salinity mine drainage water, at the same time it decreases the contamination load carried away to the surface waters.

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越多的氢原子就越呈酸性(低ph值)；越少氢原子就越呈碱性(高ph值)。

The more hydrogen, the more acidic it is (low pH); the less hydrogen, the more alkaline it is (high pH).

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要在一小段时间内达到并维持一个高碱性PH值几乎是不可能的。

It's nearly impossible to achieve and maintain a high-alkaline pH for a prolonged period of time.

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