Abstract:
A cover system for a storage pond formed using a liner is disclosed. A cover flap, a liner flap and an anchor flap are preassembled either off-site at a factory or on-site. The anchor flap is disposed in an anchor trench and the anchor trench is backfilled. The liner is deployed and the perimeter is welded to the liner flap. The cover is deployed and the perimeter is welded to the cover flap. The above welding is preferably fusion welding and could take place in any order.
Abstract:
A method and system for a wastewater treatment plant to include a hydrodynamic separator (HDS) arrangement in association with an aeration basin effluent channel as an input, and the output of an HDS arrangement which are not bifurcated and a splitting of the output from the HDS arrangement is achieved by use of a removable and movable splitter.
Abstract:
A membrane supported biofilm apparatus has a plurality of hollow fiber gas permeable membranes in a tank containing water to be treated. A biofilm supported on the membranes occupies between about 40% and 80% of the volume of water to be treated in a reactor. Wastewater treatment processes are described. A process to denitrify water or treat oxidized contaminants comprises introducing hydrogen into an inner volume of the membranes to grow autotrophic organisms in the biofilm near the membrane and heterotrophic organism near the water. Another process is operated as a biomass concentration of at least 10 g/L and up to about 40 g/L to maintain a biofilm having a surface area of over 1000 square meters per cubic meter of tank volume. A hybrid process has suspended biomass and a membrane supported biofilm.
Abstract:
Processes and systems for treatment of wastewater are provided. Some of these systems and processes flow wastewater from an upright infiltrative surface into sand or other soil between opposing infiltrative surfaces and provide for aerobic treatment of the wastewater in the sand or other soil between the opposing infiltrative surfaces. Some of these systems and processes may employ spacing connectors positioned and configured to connect neighboring infiltrative channels.
Abstract:
Embodiments of the invention include water treatment systems and components for water treatment systems that possess a collapsed and an expanded configuration, that can be easily transported in the collapsed configuration and expeditiously set up in the field into their expanded configuration. The embodiments include trickle filter/clarifier combinations, upflow anaerobic digester reactors, recirculating anaerobic digesters and their components. In preferred embodiments the volume of the expanded configurations is at least four times the volume of the collapsed configurations.
Abstract:
An aeration apparatus includes an injection nozzle provided at one of the open ends of a main body formed in the shape of a cylinder. When the injection nozzle is immersed in a liquid, the main body stands upright such that the injection nozzle is on a lower side, and gas is injected inside the main body from the injection nozzle to disperse the gas. The injection nozzle is disposed such that a center line of an injection port formed at the tip of the injection nozzle intersects the inner flow channel surface at a position lower than a blade member disposed in the lowest stage, and such that the angle formed between the center line and the vertical direction is not greater than 45 degrees.
Abstract:
The disclosure relates to an apparatus, system, and methodology for treating nested waste matter, including a delivery system for delivering a volume of untreated material; a confined container having an inlet connected to the delivery system; an energy impingement device introduced transversely into said confined container, where the energy impingement device is configured to deliver a volume of injected fluid and further configured to treat the volume of untreated material in said confined container and wherein the confined container has an outlet for exiting a volume of treated material.
Abstract:
A filter system for filtering a fluid is disclosed which includes a sock tank fluidly connected to a baffle tank. The sock tank contains a sock filter for separating particles of a certain size from an unclean fluid. The unclean fluid can come from a container holding a large quantity of fluid, such as an aquarium. The filtered fluid from the sock tank is then routed into the baffle tank. The baffle tank has a first chamber in fluid communication with a second chamber. The first chamber contains a bacteria culture for biological filtration of the incoming fluid. First and second baffles are positioned within the first and second chambers and function to regular the flow of filtered fluid from the first chamber to the second chamber. The first and second baffles also control the fluid level in the first chamber so that the bacteria culture is fully immersed in fluid at all times. This is needed so that the bacteria culture can function properly. The filter system further includes a return conduit for routing filtered fluid from the second chamber of the baffle tank back into the container holding a large quantity of fluid.
Abstract:
An aeration element for gasification or aeration of liquids includes an essentially flattened, rigid support element having a substantially oval cross-section and corrugated outer surfaces, the corrugated outer surfaces including ridges defining grooves therebetween; a threaded opening for receiving a cooperating fitting for connection to an air supply; and a flexible membrane of elastomeric material disposed around the support element. An assembly bracket includes upper and portions that can be cooperatingly attached to one another about the aeration element for securing the aeration element to a floor of a tank or pool. The assembly bracket includes through-going passages for enabling water to circulate around the bracket and reduce buoyancy of the assembly. Two aeration elements of shorter lengths can be positioned adjacent two one another, secured within assembly brackets, and connected at adjacent ends, so that one of the aeration elements functions as a conduit to the other aeration element when air is supplied into one of the aeration elements.
Abstract:
A non-chemical-feed biofilm filtration method is elucidated, and a biofilm filtration device that can achieve a desired filtration water quality level by controlling the backwash flow for a filter media is provided. The biofilm filtration device has a biofilm formed on the surface of a granular filter media filled into a filter vessel and cleans water to be filtered by passing the water in a filtration direction to a filter layer formed from the filter media. A backwashing mechanism is provided such that the flow velocity (V) for backwashing water passing through in a direction opposite to the filtration direction during backwashing of the filer media is set in a range having a lower limit which is a value (Vs) at which a prescribed backwashing effect can be obtained and an upper limit which is the value (Vm) when the backwashing expansion coefficient for the filter media is 0.