Catalysis and purification is the principal part of the combined purification, while the auxiliary purification is the use of additive and spraying water tank.
催化净化是联合净化法的主体，辅助净化方法是采用添加剂和喷雾式水箱。
When the auxiliary sewer line stores the waste water, the waste water can be pumped into the water storage tank through the water suction pipe by the self-sucking pump.
当副下水管道储存有废水时，自吸泵可将废水经抽水管抽至储水箱内。
When the auxiliary sewer line stores the waste water, the waste water can be pumped into the water storage tank through the water suction pipe by the self-sucking pump.
当副下水管道储存有废水时，自吸泵可将废水经抽水管抽至储水箱内。
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