The purification rate could amount to more than 93 % by anaerobic method.

用厌氧生物净化法净化此工艺废水，可使净化效率达到93%以上。

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The purification rate could amount to more than 93 % by anaerobic method.

用厌氧生物净化法净化此工艺废水，可使净化效率达到93%以上。

youdao