A device for detecting the presence of hydrocarbon fluid in runoff water includes an outer canister and a cartridge situated within the outer canister. The cartridge includes a pre-filter, at least one containment vessel, a diffuser/separator member situated within the containment vessel, a hydrocarbon fluid accumulator and an electronic circuit. The diffuser/separator member slows the flow of runoff water entering the containment vessel so that oil in the runoff water separates from and rises to the surface of the water where it accumulates in the hydrocarbon fluid accumulator. A sensor situated in the hydrocarbon fluid accumulator detects the accumulated oil and sends a signal to the electronic circuit which, in turn, closes a valve and prevents water from flowing through an egress opening in the outer canister.

A water treatment filter backwash process control system, comprising a control system that receives filter level data and filter backwash turbidity data. The control system having a filter level set point, wherein the filter level set point corresponds to a desired filter media bed expansion. The control system having a filter backwash turbidity set point, wherein the control system controls the filter backwash process by, while monitoring the filter backwash turbidity, sending one or more output signals that are used to control a backwash inlet liquid flow in order to maintain a desired media bed expansion, and stop the backwash inlet liquid flow when the filter backwash turbidity set point is reached.

Process for treating effluents containing nitrogen in ammonium form, using a sequential biological reactor (1), according to which: a volume of effluents to be treated in one complete cycle is introduced into the biological reactor in one or more successive fractions by volume, each fraction by volume being treated during a subcycle; each subcycle comprises a phase of feeding with a fraction by volume, and at least a first aerated step, during which total or partial oxidation of the ammonium to nitrites takes place by injection of air or of oxygen into the effluent, a settling out and emptying step taking place after the end of the complete cycle; the weight of N—NH.sub.4 to be treated is determined from the volume of effluents in the reactor at the end of the feeding phase, and from the difference between the initial N—NH.sub.4 concentration in the reactor and a concentration desired at the end of the aerated step, a maximum aeration time TM is dedicated to the aerated step, and an initial air flow rate Qairinit, for the beginning of the aerated step, is determined by taking into account the weight of N—NH.sub.4 to be treated and the maximum aeration time TM.

A wastewater recycling system includes a biological reactor having anaerobic, anoxic, and aerobic chambers. A lift station including a pump is operatively connected to the biological reactor. The lift station receives biologically treated liquid from the biological reactor and pumps the liquid from the lift station. A filtration subsystem is operatively connected to the lift station. The filtration subsystem receives and filters the liquid pumped by the lift station. The filtration subsystem includes a salt-rejecting membrane filter comprising a concentrate recirculation conduit operatively connected to recirculate salt-rejecting membrane filter concentrate to a point along the wastewater recycling system upstream of the salt-rejecting membrane filter, thereby forming a salt concentration loop between said point along the wastewater recycling system and the salt-rejecting membrane filter. A post-filtration subsystem is operatively connected to receive salt-rejecting membrane filter permeate, and comprises a water disinfection system that disinfects the permeate thereby generating potable water.

The disclosure relates to a system for separating waste. The waste separating system includes a compacting assembly, a liquid diverting assembly, and a controller configured to control aspects of the compacting assembly and the liquid diverting assembly. The waste separating system can divert waste liquid from a manufacturing assembly to a liquid diverting assembly, where a controller is configured to selectively control a flow of the waste liquid to a drain or to a storage tank.

An enhanced septic system includes a storage tank having an inlet that receives liquid gray water from a standard septic system having at least one digester and a pump located in the storage tank. The pump is coupled to an actuator to selectively provide power to the pump from a power supply to pump the gray water from the storage tank when the gray water reaches a predetermined level within the storage tank. The system also includes an outlet pipe coupled to the storage tank and to receive gray water pumped from the storage tank by the pump, at least one ultraviolet light in communication with the outlet pipe, and a detector to determine when the pump is actuated and to turn on the at least one ultraviolet light upon actuation of the pump.

A water purification system comprising a salvage pump, a vacuum assembly, and a clean water assembly. The salvage pump is configured to draw water from a water source. The vacuum assembly is configured to remove solutes from the water via vacuum evaporation. The clean water assembly is configured to remove non-soluble particles and/or bacteria from the water.

A hydrocarbon emulsion treatment system includes a treatment tank having a gas vent for operating the treatment tank near atmospheric pressure. The treatment tank separates water and oil in the emulsion for discharge to separate water and oil tanks respectively. According to a preferred embodiment, the treatment tank and the oil tank are supported on a common frame including an integral secondary containment structure providing secondary containment to both the treatment tank and the oil tank. The treatment tank is supported at greater elevation than the oil tank to allow the flow of oil from the treatment tank to the oil tank primarily under force of gravity.

A system and method for purifying domestic sewage using 1 cycle per day, which reduces constructive complexities, energy demand and avoids the emission of hydrogen sulfide into the environment, the system comprising: a reactor comprising at least two air diffusers located at the bottom of the reactor; a sludge outlet duct and a clarified water outlet duct; a feed pipe connected at one end to a pump submerged inside a pumping chamber and at the other end to a wastewater inlet located at the bottom of the reactor; a programmable logic control; a valve arrangement consisting of four valves connected to a blower, each valve being connected to one of: the sludge outlet duct, the clarified water outlet duct, and the at least two diffusers.

Embodiments under the present disclosure include the application of an electric field in a region of liquid undergoing ultra-high shear impact, mixing and or cavitation. The co-location of electrolysis and high shear mixing and or cavitation has demonstrated the ability to cause advanced oxidation reactions and advanced reduction reactions in fluid systems such as water with both dissolved and suspended solids, and hydrocarbon with and without water emulsion.