Fire power plant fly ash emissions, chemical water circulation system, sulfur removal system.
Coal, coal slurry transport, mine air supply, exhaust, drainage system.
Strong acid, alkali and other high corrosive media delivery, salt chemical brine, salt pulp, salt transport.
Crude oil transportation, natural gas gathering and transportation, sewage recharge.
Coke powder, slag, pulp and smelting residue.
Slurry pipeline, coal mine high pressure water supply, gas pipeline.
Rivers, lakes, ports, docks and other dredging works to transport sediment.
Ocean works: seawater desalination in the transport of water, fresh water.
Municipal works: sewage treatment, domestic water supply and gas transportation.