After the short-cut nitrification was realized, chemical dosage could be saved and short-cut nitrification maintained by means of changing the chemical dosing method.

当短程硝化反应实现后，通过改变投药方式可节省投药量并维持短程稍化反应。

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After the short-cut nitrification was realized, chemical dosage could be saved and short-cut nitrification maintained by means of changing the chemical dosing method.

当短程硝化反应实现后，通过改变投药方式可节省投药量并维持短程稍化反应。

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