目前高吸水性树脂的合成工艺存在反应时间长、能耗大、有废液污染等问题。
At present its synthetic technology has such problems as long reaction time, high energy-consuming, and wastewater.
在经检测的13种优先级污染金属中，发现有两种金属在钝化废液中的水平有所增加。
Of the 13 priority pollutant metals tested for, two are found in elevated levels in passivation waste effluent waters.
它是造纸厂排出的废液中的主要成分，是主要的水污染源之一。
But lignin becomes one of the main pollution sources, coming from waste water in the paper-making factory.
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