W4 and W6 derived from single primer amplification, and had no homology to the known sequences.

W4和W6是单引物扩增产物，与已知序列无同源性。

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It is proposed that wastewater from W6 should not be discharged directly into biological treatment systems, and wastewater from W1 and W3 should be detoxified before or after the biological treatment.

因此，建议W6工段废水不直接进入好氧生物处理系统，W1和W3工段废水应在好氧生物处理前后采取必要的脱毒措施。

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It is proposed that wastewater from W6 should not be discharged directly into biological treatment systems, and wastewater from W1 and W3 should be detoxified before or after the biological treatment.

因此，建议W6工段废水不直接进入好氧生物处理系统，W1和W3工段废水应在好氧生物处理前后采取必要的脱毒措施。

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