Abstract: A system and method for regression modeling an interior volume of a containment vessel and interpolating data from multi-point sensor arrays within the containment vessel to detect conditions across the interior volume of the containment vessel.

Abstract: A rotating biological contactor (RBC) is provided that includes a media wheel with a plurality of vanes configured for growth of algae thereon. The media wheel is configured for rotation by air directed from an air diffuser to impinge on the vanes such that when said media wheel is partly immersed in water rotation of the media wheel alternately exposes algae growing on the plurality of vanes to sunlight and to the water. A frame is connected to an axle of the media wheel. Only one of the media wheel and the frame is constructed with a buoyancy sufficient to support the media wheel partly immersed in water during rotation of the media wheel.

Abstract: A portable pool filter cleaning assembly is configured to retain a pool filter on support rod and allow the pool filter to spin from a spray of water. The spinning filter releases debris from the filter surface through centrifugal force. The assembly has drainage features to ensure proper drainage of water collected within the interior of the pool filter and enable proper spinning from the spray of water. The assembly utilizes a support rod with a bottom filter retainer that is conical in shape for engaging with the pool filter aperture. The bottom filter retainer may further have a bearing that enables the pool filter to rotate freely about the rod with very little force. The assembly may include a stand for securing the support rod on a hard surface, such as concrete or on an uneven lawn surface.

Abstract: A skimmer for removing water from a basin to an outlet conduit includes a buoyant element with a buoyancy sufficient that the skimmer will float generally at a surface of water within the basin; an inlet mounted to an underside of the buoyant element, the inlet pipe defining an inlet located within a perimeter of the buoyant element for receiving water to be transmitted to the outlet conduit; and a flexible membrane arranged circumferentially around the buoyant element. The flexible membrane side wall extends downward from the buoyant element to a position below the inlet, the flexible membrane configured to at least one of, filter water passing through the flexible membrane and redirect water to pass under the flexible membrane, to and through the inlet at a water flow rate. A related kit includes two skirts configured for use in different flow conditions.

Abstract: An anaerobic digestion system may include a material grinding/pulping portion, a hydrolysis portion arranged downstream of the grinding portion, a multiple chamber anaerobic reactor arranged downstream from the hydrolysis portion and including a gas collection and reintroduction system, a collection system for collecting digestate and gas from the anaerobic reactor.

Abstract: A filter arrangement for an aquarium is disclosed. The filter arrangement can include a housing assembly, a pump assembly, a transfer tube assembly, and a valve assembly for controlling water flow through the transfer tube assembly. The transfer tube assembly can include a tube structure within which a valve body of the valve assembly is rotatably disposed. The tube structure can be formed from a first tube half mated to a second tube half to permanently secure the valve body within the tube structure. A valve operator can be connected to the valve body to advantageously allow a user to manipulate the flow of water through the transfer tube assembly. Control of water flow through the filter arrangement is beneficial for obtaining a desired water flow for a certain aquarium size and application and for reducing flow during certain periods, such as during feeding.

Abstract: A method for treating water in a spa or a hot tub includes, for example, suspending a water treatment dispenser from an upper end of a filter cartridge disposed in a skimmer of the spa or the hot tub. The dispenser includes a water treatment material. A supply of water is passed from the spa or the hot tub into the skimmer and through the filter cartridge so that the dispenser suspended in the filtered water in the filter cartridge is operable to dispense the water treatment material from the dispenser, and a supply of treated filtered water from the filter cartridge is returned to the spa or the hot tub. A cover, for example, may be employed when the dispenser is not used.

Abstract: A device and method for shortcut nitrogen removal and nitrite-oxidizing bacteria activity inhibition are disclosed herein. An embodiment of the present invention provides a hollow fiber diffuser comprising: a plurality of hollow fibers on which bacteria can be attached and grow; and an inlet capable of supplying gas to one sides of the plurality of hollow fibers, wherein the gas includes oxygen and carbon dioxide, nitrite can be produced by the oxygen, and the concentration of oxygen in the gas is adjusted by the oxygen and the carbon dioxide.

Abstract: A water quality converter includes: a container having an oval hollow, where the container is a plastic body of a mixture in which 10% to 30% by weight of aventurine, 5% to 20% by weight of sodalite, 2% to 10% by weight of amethyst, 1% to 10% by weight of Chungito, 5% to 20% by weight of germanium, 2% to 10% by weight of Shungite, 3% to 10% by weight of elvan, 2% to 10% by weight of rose crystal, 1% to 5% by weight of seven-colored gemstone, and 1% to 5% by weight of wooden stone are mixed, and a weight ratio of aventurine to sodalite ranges from 3:1 to 1:1, a weight ratio of aventurine to germanium ranges from 2:1 to 1:1, a weight ratio of germanium to Shungite ranges from 4:1 to 1:2, and a weight ratio of amethyst to germanium ranges from 1:2 to 1:5.

Abstract: A system comprising a collocated thermal plant, water source, CO2 source and biomass growth module is disclosed. A method of improving the environment by utilizing the system is disclosed.

Abstract: A gas sensor assembly includes a housing; an inlet assembly configured to carry a gaseous composition having a volatile organic compound into the housing; and an outlet assembly configured to carry the gaseous composition from the housing. The gas sensor assembly also includes an ultraviolet light source disposed within the housing and a gas sensor disposed within the housing and configured to sense an amount of the volatile organic compound.

Abstract: An extraction manifold for extracting digestate from a covered lagoon digester includes a digester vessel being shaped generally as a rectangular prism lacking an upward facing face and having a floor sloping generally downward from an intake face to an extraction face of the digester vessel. The intake face and extraction face are oriented vertically, situated in opposed relation on a longer horizontal axis. Each effluent pipe terminates in an extraction nozzle on one end and an independently addressable actuatable valve on the opposite end. Each actuatable valve communicates with a manifold plenum such that actuation of the valve draws digestate from the floor in a region of the floor adjacent to the extraction face and in proximity to the extraction nozzle. A valve controller actuates valves to remove digestate from the region of the floor adjacent to the extraction face. The valve controller includes sensors to monitor biogas production.

Abstract: A bioreactor (1, 2, 3) and its use for the conversion of organic residual and/or waste materials into an organic nutrient solution with a proportion of at least 10% plant-accessible mineralised nitrogen relative to the total nitrogen content of the nutrient solution, with a reaction tank (5), where the reaction tank (5) has an input feed (6) through which suspension (4) can be introduced into the reaction tank (5), and where the reaction tank (5) has an outlet feed (7), through which the suspension (4) can be discharged from the reaction tank (5), where the carrier element (10) has at least one inner and one outer settlement surface (11), on which ammonifying and/or nitrifying bacteria can collect.

Abstract: A system for growing algae includes a photobioreactor comprising a tubular structure having inner and outer surfaces, an annular space defined between the inner and outer surfaces, an inlet to allow an algae slurry to enter the annular space, and a mechanism configured to produce radially-directed contractions and expansions in the tubular structure. At least one of the inner and outer surfaces is transparent to at least some wavelengths of light useful for growing algae within the algae slurry.

Abstract: The invention relates to a easily adaptable or DIY installation water cleaning device on any existing spa or pool, said cleaning device including an electrolysis module equipped with a particular boron-doped diamond electrode on silicum substrate. The inventions also relates to a method to clean water on spa or pools using a water cleaning device comprising said particular boron-doped diamond electrode present on the elecrolysis module. The invention also relates to electrolyzed bathing water for use in the treatment of inflammatory diseases of the skin and for use for use in the treatment of wound healing of the skin.

Abstract: A wastewater treatment method applicable to new or existing enhanced biological phosphorus removal (EBPR) treatment process designs which utilize the sequencing batch reactor (SBR) process activated sludge process treatment tanks. The method improves the performance and efficiency in the treatment of municipal and industrial wastewater to remove phosphorus (P) and nitrogen (N). The method includes ceasing reaction cycles when a derivative of rate of change of the input flow volume of the air stream into the tank needed to maintain a low-range of dissolved oxygen (DO), in which an oxidation reduction potential (ORP) setpoint reaches a derivative value indicating that conversion of the ammonia nitrogen in the influent wastewater content to a nitrite or to a nitrate is complete.

Abstract: An improved skimmer system is disclosed, as well as method of use and manufacture. The skimmer system comprises a base-basket and a moving section, where the moving section has two or more louvres defined therein. During use, the base-basket will likely remain stationary, but the moving section will float-travel along a vertical axis defined by the louvres. The skimmer system enables effective skimming regardless of potential changes in level of the pool water. The louvres within the moving section correspond with a plurality of slots within the base-basket. During installation of the system, a user would first position the base-basket within the bottom of any (existing) circular opening which normally houses a pool skimmer. Then, the user takes the movable section and loads it in on top of the base-basket.

Abstract: A multi-stage system comprising a digester, a bioreactor, a scrubber, a biofilter, and a membrane filter extracts and purifies biogas from a wastewater feed. The digester separates raw biogas from wastewater, the wastewater is then purified with a three-stage bacterial process in a bioreactor. The scrubber receives raw biogas from the digester under pressure, dissolving waste gases and purifying the methane, which can be further condensed and purified in the membrane filter. The bioreactor receives waste gases from the scrubber and membrane filter, with the ammonia portion of the waste gases rising through water from the bioreactor and being converted by annamox bacteria into nitrogen gas. The multiply recycled gas and water feeds produce a biogas having high purity and reduced atmospheric emissions of waste gases.

Abstract: An algae scrubber system operates via a flow of water and a power source. The algae scrubber system does not require a bubbler. The rate of flow of the water may be variable. The algae scrubber system includes a screen that is configured to be removed from the system without shutting off the flow of water through the system and without spilling the water. The system includes a main body with a water distributor providing water to a tray. A screen hangs from the tray to and grow light(s) encourage algae growth on the screen.

Abstract: A filterwell cartridge having ports for dispensing a dispersant directly into a filterwell of a hot tub, spa or the like with the filterwell cartridge peripherally and postionally supportable in a quick release mode through facial engagement of compound surfaces located on opposite sides of the filterwell cartridge.