the urban sewage treatment plant is the main source of sludge. with the development of china's social economy, the sewage treatment volume and sludge production are getting larger and larger.
when we go to buy a sludge drying machine, we will find that there are many types of sludge drying machines on the market, and even if it is the same sludge drying machine, the price of the final purc...
in recent years, the chinese government has issued a number of policies to guide the prevention and control of water pollution. especially since the release of “water 10” in april 2015
