sewage

• The mournful litany of disease is caused by sewage
  污水带来了无尽的惨痛疾病。
• On disposal ways of sewage sludge of hefei city
  合肥市污水处理厂污泥处置途径探讨
• Someone has to do it : drainage inspection and sewage sampling
  厌恶性工作谁来做
• Applying polluter - pays principle to sewage services
  以污染者自付原则落实排污费
• The biochemistry of detest oxygen about series flow of sewage
  污水连续流厌氧生化
• Study of co - composting of sewage sludge and straw biomass
  秸秆与污泥混合堆肥研究
• Sewage agents , paper processing and sales aids
  污水处理剂、造纸助剂加工销售。
• Structural improvement of model ywd submerged sewage pump
  型液下污水泵的结构改进
• General specification for sewage treatment equipment
  污水处理设备.通用技术条件
• Discussions on urban sewage resources in hebei province
  河北省城市污水资源化浅析