Embodiments disclosed herein relate to an apparatus for refining a liquid stream which includes a liquid carrier with a heavier waste and a lighter waste. The apparatus includes a first flow chamber, a second flow chamber, and plates. The first flow chamber is a cone structure and directs the liquid stream downwards in a first direction at a first velocity. The first velocity is greater than a settling velocity of a heavier waste in the liquid carrier. The second flow chamber directs the liquid carrier upwards in a second direction at a second velocity less than the settling velocity. The plates are in the second flow chamber and at a transition between the first and second flow chambers. The plates have an inclined geometry to cause laminar flow in the liquid stream to separate the heavier waste to a lower collection chamber and lighter waste to an upper collection reservoir.

A method for converting waste oil into oil products includes forwarding the waste oil to an oil treatment part of a waste oil converting system that includes one or more of the following subsystems: a decanter, a centrifuge, a chemical addition subsystem, a mixer, a filter, a settling tank, a water injection nozzle and/or a heater. Then measuring a property of the waste oil, such as density, viscosity, amount of water, amount of ash, amount of particles, and/or flash-point, using a sensor. Then adjusting one or more settings of the subsystem based on at least one measured value using a control system. Also treating the waste oil with the at least one subsystem to decrease a water content, a sludge content and/or a particle content of the waste oil, and using the control system to control an outlet flow of the treated waste oil. Also the waste oil converting system.

In a container, a sample is separated with a heavy solution based on a specific gravity. An overflow pipe is a pipe provided at an upper portion of the container, the overflow pipe being arranged to cause a supernatant containing a target substance separated by gravity separation in the container to overflow from the upper portion of the container. A control device controls entry and exit of the heavy solution into and from the container. The control device causes some of the supernatant produced by gravity separation to flow over the container through the overflow pipe, thereafter causes the supernatant that remains in the overflow pipe to flow back into the container, and then causes the supernatant to flow over again through the overflow pipe.

The system and method is directed to improved separation or clarification of solids from a solids-laden liquid, including the removal of low gravity solids. A liquid to be treated is introduced into the inlet of a solid-liquid separator modified to include one or more sources of vibrational energy. The liquid is directed through a conduit within the separator. This conduit can be configured into a tortuous flow path to assist in the separation of solids from the liquid, the tortuous path being interconnected between two separation towers. Vibrational energy and gas sparging is applied to the flow path. As solids fall out of solution, they are collected. The clarified liquid is also collected. A vacuum can be applied to the system to assist in moving the solid-liquid mixture through the system and to provide vacuum clarification. Electrocoagulation electrodes can also be employed.

A grit removal unit including an influent channel directing wastewater with grit into a round grit removal chamber and an effluent channel receives wastewater output from the chamber. A divider wall extends upwardly between the sides of the influent channel, and gates at the upstream end of the divider wall are adjustable to selectively open channel portions on opposite sides of the divider wall. An output guide member is mounted to allow selective adjustment of output flow opening width c to the effluent channel. The output guide member has a horizontal bottom extending from the chamber into the effluent channel across the width of the output opening, and a guide wall extending upwardly from the guide member bottom. The guide wall has a forward end spaced from the chamber annular vertical wall to define the output flow opening width therebetween.

System and method of recycling grey water, and more particularly a system and method to utilize grey water resulting from a cleaning activity such as a laundry or shower as an environmentally safe form of irrigation. In accordance with one embodiment of said system, pressure sensors and transmitters in various zones may be communicatively coupled to a system controller capable of regulating the use of at least one variable frequency drive with said system.

A method and apparatus for separating the constituents of a drilling fluid into two or more groups based on particulate size and specific gravity in a continuous flow process.

An apparatus for automated decantation of a multi-phase fluid mixture comprising a decantation container, a floating marker, a sensor, a plurality of engines and a plurality of micro-switches. The decantation container comprises an inlet valve and at-least two outlet valves. The floating marker is housed within the decantation container. The floating marker is of a selective density. The sensor is attached at a bottom surface of the decantation container. The plurality of engines are connected with the sensor. The plurality of engines controls an opening and a closing of the at-least two outlet valves. The plurality of micro-switches are connected to the plurality of engines. The plurality of micro-switches control an amount of power supplied to the plurality of engines.

A system for treatment of contaminated sediments and soils using free radical chemical reaction and phase separation processes comprises a sediment or soil inlet system, a slurry tank, wherein the inlet system feeds the slurry tank, a water make-up tank, an optional acid storage tank, wherein the water make-up tank and the acid storage tank are connected to the slurry tank, a reaction vessel, wherein the slurry tank is connected to the reaction vessel, an oxidant agent storage tank, an optional catalyst storage tank, wherein the oxidant agent storage tank and the catalyst storage tank are connected to the reaction vessel, a first particle separator, wherein the reaction vessel is connected to the first particle separator, and an oil/water separator, wherein the first particle separator is connected to the oil/water separator is disclosed. A method for treatment of contaminated sediments and soils is also disclosed.

Techniques for recovering a hydrocarbon fluid from a waste fluid include transmitting a plurality of wave energy pulses through a waste fluid, the waste fluid including a mixture of a hydrocarbon fluid and a non-hydrocarbon fluid; receiving a plurality of reflected wave energy pulses transmitted through the waste fluid; determining a level difference between a surface of a hydrocarbon fluid layer that includes the hydrocarbon fluid and a surface of a non-hydrocarbon fluid layer that includes a non-hydrocarbon fluid based, at least in part, on the plurality of reflected wave energy pulses; and operating a hydrocarbon fluid pumping assembly, based on the determined level difference, to circulate a portion of the hydrocarbon fluid in the hydrocarbon fluid layer from the waste fluid.