Abstract: The invention relates to wastewater treatment systems with decentralized disposal of treated wastewater and methods of using the same. The invention further relates to methods of converting existing septic systems to a wastewater treatment plant system.
Abstract: The present discloses a waste screening apparatus comprising: a main body; a waste screener vertically and tiltedly disposed in the main body to screen wastes in the input water and to allow waste-removed water to be discharged through water discharge holes defined in both side faces of the main body respectively, wherein the waste screener vertically circulates in a conveyor manner, wherein the input water is input to a front, rear and bottom of the waste screener; wherein the main body includes: both side walls having the water discharge holes defined therein respectively to allow waste-removed water to be discharged out from the waste screener therethrough; and a rear blocking wall disposed at a rear of the waste screener to be spaced from the waste screener, wherein the input water passes through front and rear portions of the waste screener with wastes being removed from the input water, and, then, is discharged out through the water discharge holes defined in the both side walls respectively.
January 20, 2017
Date of Patent:
October 30, 2018
Young Nae Yoon, Youn Ho Lee, Young Ik Choi, Hee Jong Jung, Mi Hwa Kim
Abstract: A dual action retractable screen includes a first screen portion with a first screen portion perforated surface connected to the hinge mount via a horizontal hinge, which allows the first screen portion to rotate within a substantially horizontal plane. The screen also has a second screen portion with a second screen portion perforated surface and a latch pin. A vertical hinge connects the first screen portion to the second screen portion and allows the second screen portion to rotate within a substantially vertical plane. The screen also includes a latch mount that connects to the curb inlet and has a latch saddle that receives the latch pin. The screen operates in two modes: (1) a closed mode where the latch pin is disposed of in the latch saddle, inhibiting rotation about the horizontal hinge; and (2) an open mode where the latch pin is dislodged from the latch saddle, permitting rotation about the horizontal hinge and about the vertical hinge.
Abstract: A method is provided herein of dewatering a fly ash pond or pit, the method including: preparing one or more wellbores in, or in proximity to, the fly ash pond or pit; installing a riser pipe into a first of the wellbores, the riser pipe including a drain pipe having perforations formed therethrough, and a filter textile wrapped about the drain pipe so as to at least overlap the perforations, the filter textile being porous with openings having apparent opening size of 200 microns or less; and, generating negative pressure within the riser pipe so as to draw water from adjacent the first wellbore and through the filter textile. Advantageously, the method of the subject invention allows for the dewatering of a fly ash pond or pit with extraction of water therefrom which is visibly clear.
Abstract: A system and method for treating liquid runoff from bridge decks or other types of roadways are provided. The system includes vertical scuppers positioned at low points along a length of a bridge deck. Each scupper has a removable tube fitted inside the scupper with a filtration media for treating liquid runoff such as stormwater. During rainfall events, liquid runoff gravity flows downward through the tubes and the filtration media inside the tubes so that the liquid is treated before being discharged to the environment. The tubes can be removed to periodically replace the filtration media.
Abstract: A settling tank for receiving an influent stream separated into first and second influent streams and recombined under pressure in the settling tank. The settling tank comprises first and second pipes for conveyance of the first and second influent streams to a turbulent mixing zone wherein the first and second pipes terminate in first and second longitudinally parallel manifolds, each having a plurality of longitudinally arrayed holes defining first and second hole arrays. Each of the first and second arrays is directed in opposition to the other of the first and second arrays such that influent flows from the respective holes thereof can collide to cause turbulent mixing in said turbulent mixing zone.
Abstract: A hydraulic separation and collection system applicable to linear street curb-inlet type drainage-chambers, independent or connected to a storm drainage network. The FIRST FLUSH COLLECTOR™ is a pollutant separation and collection apparatus that can be integrated into an existing storm drain network, or be retrofitted as a component into a new or existing curb-inlet type drainage-chamber. The outfall from the FIRST FLUSH COLLECTOR™ can be redirected to a conventional stormwater pollutant BMP, or be diverted to a sanitary sewer, storm drain, or combined collection system for treatment downstream. The apparatus is envisaged as a simple, easy to install prefabricated-kit utilizing a basic build-in-place separation and collection apparatus. The apparatus can be readily adapted to the needs of a given curb-inlet type drainage-chamber with minor alterations to the chambers, or to the connected existing storm drainage network.
Abstract: A self-cleaning filter device adaptable to the volume of rainwater and a method for its use are described. The self-cleaning filter device adaptable to the volume of rainwater comprises a body including a rainwater inlet, a debris outlet, at least one filtered rainwater outlet, a filter element provided inside the body and comprising a flexible element having a filter means involving and secured to it and whose upper end is connected to said rainwater inlet and whose lower end is connected to said debris outlet, said filter element being provided with an upper portion, a central portion and a lower portion, and a regulating device provided inside the body and connected to the filter element.
Abstract: A settling basin insert for controlling fluid flow into a settling basin has a first and second side wall in opposition, and a top surface extending between the first and second side walls, defining a sump extending from head to end. Fluid apertures extend through the top surface to permit fluid to communicate with the sump and an access aperture in the top surface permits a vacuum hose to pass into the sump. The first side wall is taller than the second side wall, and the first and second side walls each define a guide wall extending above the top surface. The second side wall is configured to be adjacent the settling basin. The first and second side walls direct inflowing fluid along the settling basin insert and through the fluid apertures in the top surface, decelerating the fluid for settling of sediment in the settling basin insert.
Abstract: Apparatus for removal and collection of duckweed from a body of water comprising an engine, a turbine duckweed collection assembly having a housing with a duckweed collection inlet, a duckweed discharge outlet, and a well located between collection inlet and discharge outlet, a series of spaced elements supported on a rotatable shaft and located within well with the shaft connected to the combustible engine to rotationally drive spaced elements within well to create a vortex pumping action in the body of water drawing free floating duckweed into collection inlet, through well and out from discharge outlet, a platform supporting combustible engine and turbine duckweed collection assembly in an upright condition, and a collection manifold assembly connected to discharge outlet and includes a water permeable collection bag receiving and collecting duckweed while allowing water to escape therethrough and return back to the body of water.
Abstract: Provided are: a lid capable of capturing a foreign substance from a liquid crystal material in advance before the liquid crystal material is used; and a method of capturing a foreign substance. In a lid (20) including a bottom part (22) closing an opening on one end of a circumferential part (21) having a tubular shape is provided and a circumferential part (21) placed over a tubular part having an opening of a container provided at the container, the bottom part (22) covering the tubular part, the lid further includes a partition board (211) provided at an inner surface of the circumferential part in a slanted direction against the bottom part (22) and dividing the inside of the circumferential part (21) into a first space proximal to the bottom part (22) and a second space apart from the bottom part (22), and a connection part (213) which connects the first space with the second space being provided at a portion of the partition board (211) closest to the bottom part (22).
Abstract: An immiscible liquid separator for maintaining a desired liquid relationship between an oil spillover and a water spillover irrespective of a tilt angle of the separator. The use of the separator is thus well adapted for use on ships and the like. The separator includes a cylindrical weir having an open top over which separated water spills when waste liquid is drained into the separator. The separator also includes a cylindrical oil stack having an open top over which separated oil spills when waste liquid is drained into the separator. The cylindrical oil stack is located within the cylindrical water weir, thus allowing the separator to function as desired independent of the angle of tilt of the separator.
Abstract: An oil-water separator for separating mixed density fluids, such as oil and water, oily sediment laden water and the like, as well as portable, in-tank and towable and anchorable boom containment systems kits and methods employing the same. The oil-water separator employs at least two oil-separation chambers operating in opposing but synergistic separation modes in parallel. The oil-separation chambers alternate distribution of a single mixed fluid density stream between the chambers using a partial vacuum source to draw the stream into one chamber, while concurrently stopping inflow of the stream into another chamber by removing the vacuum source. The apparatus allows each chamber to switch back and forth between (a) actively separating and removing less dense fluid (e.g., oil) when the partial vacuum is applied, and (b) passively separating the less dense fluid (e.g., oil) and removing the more dense fluid (e.g., water) when the partial vacuum source is removed.
Abstract: An in-situ purification island structure and the construction method thereof, which refers to the field of sewage treatment technology. The in-situ purification island structure comprises the upstream purification island main body and the downstream purification island main body, in which the upstream purification island main body comprises the first base backfill layer, the first lower layer, the first hydrophobic layer, the first water permeable layer and the first upper layer. The first ecological bags are set around the surface of the first base backfill layer. The first lower layer has center formed with a lower layer backfill transitional zone. The first hydrophobic layer has center formed with a hydrophobic layer backfill transitional zone. It has a good natural purifying effect on the sewage, saves the investment and cost, no limitation on the applications, the capacity and efficiency of the purifying is high, and saves the resource.
December 5, 2014
Date of Patent:
June 19, 2018
NANJING UNIVERSITY ECOLOGICAL RESEARCH INSTITUTE OF CHANGSHU
Shuqing An, Lingyan Zhou, Lijun Ren, Yuyuan Zhang
Abstract: A one piece, planar flatpack gutter trap formed and creased on its top surface in a configuration so as to allow assembly into a gutter system trap. It is capable of folding assembly on a job site with a minimum of hand tools and an object with a sharp linear edge. It has a leaf guard incorporated thereon that is capable of locking the gutter trap in its assembled configuration to prevent the collapse of the leaf trap and to increase the lateral stability of the device.
Abstract: The invention discloses an unpowered water purification system for a riverfront landscape constructed wetland, comprising a riparian wetland constructed along a lake-land ecotone of a river, lake-pond. The riparian wetland comprises a plurality of alternatively arranged wetland islands and watercourses formed between them. The bottom surface of the riparian wetland is lower than the normal water level of the river, lake-pond, and the upper surface of the wetlands is flush with the normal water level of the river, lake-pond. Plants are planted on the wetlands. A revetment is constructed between the riparian wetland and the river, lake-pond, and its upper surface is between the bottom surface of the riparian wetland and the upper surface of the wetlands. The invention achieves good purification and landscape effects. The purification system has some advantages such as good landscape effects, simple management without energy and power consumption, and thus is durable and stable.
Abstract: A wastewater-lifting system is provided. The wastewater-lifting system includes at least one bulky-material-collecting vessel for wastewater loaded with bulky materials which is guided therethrough, a liquid-collecting vessel for the wastewater which is freed from bulky materials and precleaned in the bulky-material-collecting vessel, and with a wastewater shaft for accommodating the bulky-material-collecting vessel and the liquid-collecting vessel. The liquid-collecting vessel and the wastewater shaft have at least one common wall surface. The liquid-collecting vessel defines a closed-off space with only a partially covered base surface in the wastewater shaft, and is equipped for this purpose with at least one wall surface independent of the wastewater shaft.
October 10, 2014
Date of Patent:
June 12, 2018
Michael Becker, Enrico Mueller, Thomas Pensler, Maik Ulmschneider
Abstract: A feedwell comprising a plurality of holes disposed in a bottom thereof, at least some of the holes having a tube disposed thereabout which extends downward or otherwise away from an interior of the feedwell. Optionally, a large center hole can be provided and it can have a tube disposed around it. By providing a plurality of holes spread across a large portion of the bottom of the feedwell, lower velocity flow rates from the feedwell to a sedimentation chamber can be provided, thus reducing induced turbulence in the fluid within the sedimentation chamber, while still providing sufficient separation of the feedwell from the sedimentation chamber so that the contents of the feedwell can be properly and adequately mixed.