Flue gas generated from thermal power plants commonly requires desulfurization and denitrification processes. In the wet desulfurization process unit, limewater or certain chemicals needs to be added in the wet scrubber spray tower to promote the reaction and absorption. The wastewater after wet desulfurization normally contains a considerable amount of heavy metal ions, COD and other components.
The coal-derived chemical industry uses coal as raw material for conversion and utilization, and relevant wastewater primarily involves three aspects: coking wastewater, coal gasification wastewater and coal liquefaction wastewater. The wastewater quality components are complex, especially high content of COD, ammonia nitrogen, phenolic substances, and simultaneously contains fluoride, thiocyanide and other toxic substances. The coal chemical industry has enormous water consumption, along with high concentration...
Industrial wastewater is generated from a wide variety of production and processing processes. Depending on the different industry properties, industrial wastewater can be composed of various organic and inorganic components such as oils, fats, alcohols, heavy metals, acids, alkalis and etc. This type of wastewater must be pretreated before recycle and reuse for internal purpose, or before discharge to public sewage treatment plants and the nature.
The origin of the landfill leachate are as follows: Precipitation: Rainfall and snowfall (main source). Surface water: Surface runoff and irrigation. Groundwater: Groundwater infiltration when the leachate level is lower than the groundwater level. Water content in the trash: From trash itself or from the atmosphere. Trash degradation: Water generated from organic matter degradation.
