分析危险废物处理厂生产区周围进行大面积地面硬化的原因，提出加大厂区绿化的措施。
The reasons of ground hardening in a large area around working areas in hazardous waste treatment plants were analyzed.
经过几十年的采矿后，这座城市变成了一片环境紧急事故区，因为开矿企业从一开始就缺少废物处理厂。
Following several decades of ore mining the city turned into an area of environmental emergency as the enterprises lacked waste plants since the very beginning.
“下水道淤泥”，是指经城市污水处理厂产生的淤渣，包括预处理的废物、污垢和性质不稳定的淤泥。
"Sewage sludge" means sludge arising from urban effluent treatment plant and includes pretreatment waste, scourings and unstabilised sludge.
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