A heavy industrial mobile CIP system, which comprises two closed loops and facilitate uniformity in chemical mixing and in heating of cleaning fluid and chemical concentration. The first loop comprises an electric pump for pumping fluid from a mixing tank and through the first loop. The cleaning chemicals are added to the fluid circulating in the first loop prior to the fluid returning to the mixing tank. The cleaning fluid is heated in the mixing tank by at least one heater. The second loop comprises a second pump to pump fluid from the mixing tank through the second loop, which is connected to the equipment to be cleaned. The fluid and debris from cleaning the equipment circulates through the second loop to the mixing tank. In some cases, a weir can be used to facilitate separation of solids in the fluid returning from the equipment into the mixing tank.

The present disclosure relates to a system and method for treating wastewater, the method comprising the steps of: providing a vessel for receiving wastewater and a gas, wherein the gas comprises one or more constituent gas components; directing the wastewater and a first gas component of the gas to the vessel; reducing the temperature of the contents of the vessel from a first temperature to a second temperature to facilitate the formation of clathrate hydrates comprising the wastewater and the first gas component; increasing the temperature of the contents of the vessel with respect to the second temperature to facilitate melting of the clathrate hydrates; and removing clean water and/or the first gas component from the vessel.