求翻译：国内有相当数量的污水厂都在将污泥经过简单脱水、外运后随意抛弃、倾倒。由此引起的二次污染问题已不容忽视，污泥中的重金属、有机物、富营养物质、病原体等再次被传播到土壤、大气以及水体当中，在一定程度上甚至抵消了部分“污染减排”的成果。是什么意思？

There are a considerable number of domestic wastewater treatment plant sludge in the dewatering through a simple, Sinotrans, after discard, dump. The resulting problem of secondary pollution can not be ignored, sludge heavy metals, organic matter, nutrient-rich substances, pathogens spread again to

There are quite a number of domestic sewage treatment plants in the country in the sludge after a simple dehydration, shipping, dumping to discard after. As a result, 2 th issue of pollution in the sludge has been not to be overlooked, heavy metals, organic matter, nutrients, pathogens such as Rich

The home has the considerable amount sewage factory all after to pass through the sludge the simple dehydration, the foreign shipment gets rid at will, falls.From this causes two contamination concerns already not allow to neglect, in the sludge heavy metal, the organic matter, the rich nutrients, t

A considerable number of domestic wastewater treatment plant sludge dewatering, after China free to abandon after a brief, dumping. The resulting secondary pollution problem can no longer be ignored, of heavy metals in sludge, organic matter, nutrients, pathogens and other rich was once again spread

A considerable number of domestic wastewater treatment plant sludge dewatering, after China free to abandon after a brief, dumping. The resulting secondary pollution problem can no longer be ignored, of heavy metals in sludge, organic matter, nutrients, pathogens and other rich was once again spread