286results about "Sedimentation device making" patented technology

A treatment facility for removing toxic metals from storm water runoff to provide clean water. The treatment facility includes a pretreatment chamber for removing large toxic particles from the storm water runoff and absorbent chamber for removing fine particles of toxic metals from the storm water runoff. The absorption chamber has an absorption bed of three absorptive materials for removing the fine particles of toxic metals from the storm water runoff.

A storm water interceptor comprises an input conduit connected to a first treatment tank for delivering storm water to the first treatment tank and having an obvert elevation. Also, the interceptor comprises a lower conduit having an invert elevation, a substantially horizontal orifice at a first end connected to the first treatment tank and an exit orifice at an opposite end connected to a second treatment tank, whereby the substantially horizontal orifice at the first end of the lower conduit is below the invert elevation of the lower conduit. The interceptor further comprises an overflow conduit connecting the first treatment tank to the second treatment tank, whereby the overflow conduit is connected to the first treatment tank at a location above the obvert elevation of the input conduit. As well, there is an output conduit having a substantially horizontal orifice at a first end connected to the second treatment tank and an exit portion extending away from the second treatment tank, whereby an invert elevation of the output conduit is above an obvert elevation of the lower conduit, and whereby the substantially horizontal orifice at the first end of the output conduit is below the invert elevation of the output conduit. More than two treatment tanks may be connected in a cascading manner using the same general components and principles as an interceptor having two treatment tanks.

A settling tank for dewatering a thin slurry is provided in a lined portable container and with a disposable filtering means. A novel method of processing the slurry by settlement of the solid phase and removal of the liquid phase in cycles avoids the clogging of the filtering means. The settling tank can be easily transported and dumped without requiring the transferring of residue sludge or the cleaning of equipment.

A refuse / oil removing device and a refuse / oil recovery bag are provided which can remove refuse and oil contained in drainage discharged from a restaurant in a simple manner without contact with the refuse and oil. A support base of a support unit is disposed in the interior of a grease trap at a position higher than the water level. A recovery bag is attached to the support unit and plural layers of bag portions of the recovery bag are put on the support base. The bag portions are each formed of a material which permits the adhesion of oil thereto and a large number of water passing holes are formed in each of the bag portions. Drainage is introduced inside the innermost one of the plural layers of bag portions and is passed through the bag portions, allowing refuse and oil to adhere to the bag portions. In this way, the job of replacing the recovery bag can be simplified and the amount of oil accumulated within the grease trap can be decreased.

The present invention is concerned with a method and apparatus for recycling drilling fluids used in the drilling of wells. The apparatus comprises a tank with a plurality of compartments. Used drilling fluid containing well cuttings or “solids” is pumped into a receiving compartment of the tank and directed towards a flow-reversing barrier. Reversal of the flow causes heavier solids to settle to the bottom of the tank. As fluid fills the receiving compartment, it flows downstream into an adjacent compartment by passing through a flow-restricting baffle that causes more solids to settle to the bottom of the tank. As fluid overflows from compartment to compartment in the tank, it passes through successive flow-restricting baffles causing further solids to settle to the bottom of the tank. When the fluid reaches the collecting compartment of the tank, it is removed to be used again in drilling operations. A conveyor extending along the bottom of the tank is used to move the settled solids to the collecting compartment, from which they are removed and pumped through a centrifuge to recover residual fluids.

The present invention is a storm water filter system for filtering floatable debris and non-floating pollutants from storm water passing through a storm water drain system. The storm water filtering system has a floatable skimmer therein for capturing floatable debris and trash from the storm water and a separate filtration system to filter non-floatable pollutants from water passing therethrough.

The present invention is a storm water filter system for filtering floatable debris and non-floating pollutants from storm water passing through a storm water drain system vault. The storm water filtering system has a vault having chamber having a wall between the inlet thereto and the outlet therefrom. The wall has a filter passageway therethrough for filtering the storm water and a floatable baffle panel covering a second passageway therethrough for capturing floatable debris and trash from the storm water. Storm water entering the vault inlet passes through a filter element and out the outlet and also can pass under the floating baffle panel when the floatable baffle panel is floated to a raised position to thereby prevent storm water from accumulating on the inlet side of the wall.

A variety of improved hydroclone based fluid filtering systems are described. The hydroclones generally include a tank having an internal chamber and a filter (preferably a surface filter) that is positioned within the internal chamber. The filter defines a filtered fluid chamber within the internal chamber of the tank. The hydroclone may be operated such that a vortex of flowing fluid is formed between the chamber wall and the filter with the filter being located in the center of the vortex. With this arrangement, the filter acts as a cross-flow filter. In one aspect of the invention, the filter is a stepped filter. In another aspect of the invention, the filter is an surface filter, as for example, an electroformed metal surface filter. In some preferred embodiments, the openings in the filter are arranged as slots that extend substantially vertically so that they are oriented substantially perpendicular to the flow path of fluid flowing in the adjacent portion of the vortex. In another aspect of the invention, a circulating cleaning assembly is provided in the hydroclone region. The cleaning assembly is arranged to help clean the filter and is driven by the vortex of flowing fluid formed in the hydroclone region of the internal chamber. In yet another aspect of the invention, improved hydroclone intake structures are described. The described hydroclones may be used to filter water and other fluids in a wide variety of applications.

Various embodiments of the present invention are directed to a plate settler comprising: a plurality of plates, each plate defining a first end, a second end, and a settling surface there between; a plurality of angular support members extending from and structurally supporting the first ends of respective ones of the plurality of plates, each angular support member defining a first lateral flow encouraging surface and a second lateral flow encouraging surface; and a plurality of headloss control gaps defined by the plurality of angular support members. The first lateral flow encouraging surface of each angular support member may combine with the second lateral flow encouraging surface of an adjacent angular support member to define a generally v-shaped lateral flow channel.

A septic tank formed of a blow molded body having an interior and an exterior. The septic tank body is formed from one or more layers of plastic material that are chosen for their chemical, mechanical or other properties. The septic tank body includes a plurality of integral ribs to provide circumferential structurally rigidity and also includes compression molded flange portions to provide axial structural rigidity. Additionally, septic tank covers and riser systems are provided.

A method of flow baffle installation is disclosed herein. The method, in various aspects includes the steps of orienting a side support at a specified elevation about a sidewall of a sump using a leveling support, bolting the side support to the sidewall of the sump following the step of orienting a side support at a specified elevation about a sidewall of a sump using a leveling support, orienting an opposing side support at the specified elevation about the sidewall of the sump using a corresponding leveling support, bolting the opposing side support to the sidewall of the sump following the step of orienting an opposing side support at the specified elevation about the sidewall of the sump using a corresponding leveling support, adjusting an adjustable cross-member to span between the side support and the opposing side support. This Abstract is presented to meet requirements of 37 C.F.R. §1.72(b) only. This Abstract is not intended to identify key elements of the apparatus and methods disclosed herein or to delineate the scope thereof.