If the sludge content is over 15%, the wastewater should be separated by means of centrifuge;

含渣率在15％以上的钻井废水应采用离心机进行分离；

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If the sludge content is over 15%, the wastewater should be separated by means of centrifuge;

含渣率在15％以上的钻井废水应采用离心机进行分离；

youdao