A process for removal of TOC from industrial aqueous waste streams which have TOC of 350000 mg/I or less and various pH, wherein the process comprises a plurality of successive steps comprising in each step electromagnetic irradiation in the region 200 nm-600 nm at a temperature of less than 70° C. for photo oxidation of the waste streams using an added oxidant.

A waste treatment system including at least one treatment chamber through which a fluid to be treated is moved in a fluid flow, the or each treatment chamber including at least one of a number of ultraviolet light sources, and at least one dispersion assembly located at a base of the treatment chamber to disperse at least one sterilizing agent supplied to the treatment chamber in a counter flow direction to the fluid flow.

An energy-saving sludge drying disposal system is provided. The disposal system includes a vacuum heating unit, an incinerating unit, a vacuum cooling unit and a molten salt heat exchanging unit. The vacuum cooling unit includes a high-temperature gas inlet, a condensed water outlet, a low-temperature gas outlet, a low-temperature liquid inlet and a medium-temperature liquid outlet. The high-temperature gas inlet of the vacuum cooling unit is connected with the vacuum heating unit. The incinerating unit includes an incinerator, an incineration gas inlet, a combustion-supporting gas inlet, a flue gas discharge outlet, a cold molten salt inlet and a hot molten salt outlet. The incineration gas inlet is connected with the low-temperature gas outlet of the vacuum cooling unit. The molten salt heat exchanging unit includes a cold molten salt outlet, a hot molten salt inlet, a medium-temperature liquid inlet and a high-temperature liquid outlet.

The present disclosure provides a pump-assisted degassing system, a vacuum degassing tower, and a water system having the same. The degassing system comprises a vacuum pump, connected with a degassing tower through a main pipeline, and configured to pump out a gas-liquid mixture from the degassing tower; a gas-liquid separator, connected with the vacuum pump in a closed loop through a circulation pipeline, and configured to perform gas-liquid separation on the gas-liquid mixture; and a booster pump, arranged on the main pipeline between the vacuum pump and the degassing tower, and configured to assist the vacuum pump to pump out the gas-liquid mixture. The vacuum pump and the booster pump constitute a two-stage pumping device. Only one vacuum pump is needed in the system, and the vacuum pump requires less circulating water and less motor power resulting in lower the equipment load loss in the operation efficiency.

The invention relates to a water treatment apparatus based on plasma (ionized gas) discharge. In particular, the invention relates to the field of industrial and agricultural wastewater treatment. More particularly, the invention relates to disinfection of drinking water, and water in pools, spas and similar recreational water environments. The invention comprises a plasma reactor produces plasma discharge at low atmospheric pressure between liquid electrodes eliminating contamination of treated water by harmful nitrogen compounds and toxic substances due to electrode erosion.

A sanitizer system has an ultraviolet (UV) lamp, a UV transparent tube and Venturis that that draw ozonated air from near the UV lamp and mix the ozonated air with water traveling through the UV transparent tube while UV light breaks down ozone in the UV transparent tube into free radicals and other ozone decomposition products. Additional ozone can be introduced into what after it passes through the UV transparent tube.

The present invention concerns malting process for steeping grain comprising the provision of at least a first steeping tank having an inlet and an outlet, a second steeping tank having an inlet and an outlet, and a water circulation device fluidly connecting the outlet of the first steeping tank and the inlet of the second steeping tank for circulating steeping water from the first steeping tank in the second steeping tank.

A novel wastewater treatment method, apparatus and system to treat wastewater from septic tanks, including a tertiary treatment for the passive removal of phosphorus, nitrogen and coliforms from sewage streams, is described. The method, apparatus and systems comprise a septic tank, an enviro-septic system, a dephosphatation system, a denitrification system and a polishing field, including related piping distribution and pumping systems. The invention further comprises an enviro-septic system comprising an advanced enviro-septic pipe, a filtration medium, a collection drain and associated distribution systems; a polishing field comprising an advanced enviro-septic pipe, a collection drain, a filtration medium, a collection drain and associated distribution systems; and a dephosphatation system comprising a filtration medium for the removal of phosphorus and coliforms and a denitrification system comprising a filtration medium for the removal of nitrogen. The wastewater treatment method is used to treat domestic, industrial and commercial sewage effluent.

Systems and methods for containing a subsea flow of hydrocarbons includes a water intake. The water intake is operable to be positioned downstream of the subsea flow of hydrocarbons. A receiving facility is located at a surface of a sea. A suction hose extends from the water intake to the receiving facility. A suction system is operable to reduce a fluid pressure within the water intake.

A low energy desalination system with a venturi device includes a saline water feed, a pump, and a venturi device. The pump provides saline water to the nozzle of the venturi device. The fluid flowing through the nozzle speeds up at the throat or constricted region of the device. This results in a reduction in pressure at the throat of the device. The reduced pressure at the throat of the device makes the fluid susceptible to evaporation which causes a certain amount of water to evaporate from the saline water. Freshwater vapor from the fluid flows through a freshwater vapor outlet at the throat of the venturi device to a freshwater tank and the concentrated brine remaining in the venturi device flows toward the diffuser of the venturi device and then to a brine tank.