求翻译：兰州市雁儿湾污水处理厂拟采用高温厌氧消化技术处理剩余污泥，剩余污泥高温厌氧消化后含有一定量重金属，这些重金属污染物成为剩余污泥农用最大制约因素，因此需要对高温厌氧消化后的剩余污泥进行检测和评价。是什么意思？

Lanzhou City, the wild goose Bay sewage treatment plant to be adopted thermophilic anaerobic digestion technology to dispose of surplus sludge, thermophilic anaerobic digestion of excess sludge contains a certain amount of heavy metal, heavy metal pollutants residual sludge in agriculture the larges

The Lanzhou City Batangas Bay's sewage treatment plant with high temperature be anaerobic digestion technology with the remaining sludge, and the remaining sludge anaerobic digestion temperature after heavy metal containing a certain amount, these heavy metals used in agriculture as a residual sludg

The Lanzhou city wild goose bay sewage treatment plant plans to use the high temperature to tire of the oxygen digestion technology processing surplus sludge, after the surplus sludge high temperature tires of the oxygen digestion to include the ration heavy metal, these heavy metal pollutant become

Goose Bay sewage treatment plant of Lanzhou city proposed treatment of excess sludge by thermophilic anaerobic digestion technology, after high-temperature anaerobic digestion of excess sludge containing a certain amount of heavy metals, these heavy metals as the residual sludge's biggest constraint

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