Materials and methods for degrading a microcystin compound, and filtering microcystin from water, are described.

A system and method is provided for water and wastewater treatment. The system comprises a fixed film biological process and a ballasted flocculation process.

A system and method of treating wastewater. In one embodiment, the system comprises a biological reactor fluidly connected to a source of wastewater and having a treated wastewater outlet, a fixed film biological reactor connected to the source of wastewater and having a fixed film effluent outlet, and a ballasted system fluidly connected to the fixed film effluent outlet. The ballasted system may comprise a ballast reactor tank configured to provide a ballasted effluent, and a source of ballast material fluidly connected to an inlet of the ballast reactor tank. The system may further comprise a bypass line having an inlet fluidly connected to the source of wastewater, a first outlet fluidly connected to the ballasted system, and a second outlet fluidly connected to the fixed film biological reactor, the bypass line configured to bypass the fixed film biological reactor.

The present invention provides a treatment system and method for rural black and odorous water and manure. The treatment method includes: (1) sending manure into a solid-liquid separation system, adding straws and/or saw-dust and chaff to solid obtained after the solid-liquid separation, adjusting a carbon-nitrogen ratio, sending into a solid aerobic fermentation system for aerobic fermentation, and then aging to produce organic fertilizer; (2) sending liquid obtained after the solid-liquid separation into a liquid anaerobic fermentation system for deep anaerobic fermentation; (3) sending biogas slurry after the deep anaerobic fermentation to a bio-membrane filter tank and a fibrous filter tank for treatment; (4) irrigating crops with the treated liquid or reusing the treated liquid in the farmland; and (5) soaking straws in manure slurry of a straw hydrolysis tank for hydrolysis, then pumping the softened straws to the solid-liquid separation system by using a cutting pump.

A system for determining operating conditions of a rotating biological contactor includes a sensor including a first end coupleable to the gearbox assembly of the rotating biological contactor at a radial distance from a rotation axis of a rotatable shaft. The rotatable shaft rotates a plurality of media elements about the rotation axis to treat water within a basin of the rotating biological contactor. The sensor also includes a second end coupleable to a brace to prevent rotation of the sensor and the gearbox assembly when the rotatable shaft is rotated. The sensor further includes a body extending between the first end and the second end. The sensor is configured to detect a load on the body when the rotatable shaft is rotated. The system further includes a controller communicatively coupled to the sensor. The controller is configured to determine a torque of the rotatable shaft based on the load detected by the sensor.

System (1) for the biological treatment of wastewater comprising a tank (10) comprising a point for the entry (11) of water to be treated and a point for the exit (12) of treated water; a rotating drum (20) defining an internal volume, said drum being capable of rotating about a horizontal shaft (200) and having a wall (21) that is at least partly permeable to water, said rotating drum being disposed the tank and being intended for partial submersion in the water contained in the tank, less than half of its internal volume bathing in the water contained in the tank; a driving means (30, 31, 32) intended for driving the drum in rotation along the horizontal shaft; free media (15), having a surface suited to the development of a biofilm, disposed within the drum (20) and retained by the wall of this drum, the free media occupying a volume ranging from 30% to 80% of the internal volume of the rotating drum; at least one hollow tube (40) extending in parallel to the horizontal shaft fixed to the wall of the rotating drum within the drum, the hollow tube having a perforated longitudinal section comprising a set of orifices distributed homogeneously throughout the length of the hollow tube, the hollow tube being designed to get filled alternately with water and with air when the rotating drum, partially submerged in the water contained in the tank, is put into rotation in a given sense.

A disclosed piping manifold for providing pulsating flow includes an outer tubular member extending along a longitudinal axis. The outer tubular member includes a plurality of outer radial openings. An inner tubular member is positionable within the outer tubular member and rotatable about the longitudinal axis. The inner tubular member includes a plurality of inner radial openings, an inlet port configured to receive a fluid, and a lumen providing a fluidic pathway between the plurality of inner radial openings and the inlet port. Rotation of the inner tubular member about the longitudinal axis is configured to periodically bring the plurality of inner radial openings in and out of registration with the plurality of outer radial openings to provide a plurality of pulsating flows of the fluid out of the outer radial openings.

Provided are a water quality purification device, and a water purifier and an aquarium that use the water quality purification device. The water quality purification device includes a component filled with a micro-electrolysis catalyst and a biological filtration component that are connected in series. By utilizing a micro-electrolysis technology, pollutants in water are preprocessed and the biodegradability of the water is improved. A water body processed by the micro-electrolysis catalyst enters the biological filtration component, which can greatly improve the purification efficiency of the biological filter bed. Working together with an adsorption electrode, this structure can effectively stabilize the water quality in the aquarium and greatly reduce the required times of changing water.

A multi-functional slurry processing system (VARCOR) and associated methods is disclosed. The present examples provide a multi-functional slurry processing system incorporating systems and methods for separating liquid and solid components in slurries. In particular the systems and methods described herein produce clean water, dried solids, and potential concentration of desirable constituents with a boiling point lower than water. At least one example of the multi-functional slurry processing system provides a self-contained processing facility configured to efficiently convert high water-content slurries into its constituent solid and liquid fractions and subsequently generating and collecting clean water and concentrating desirable constituents with a boiling point lower than water. The multi-functional slurry processing system advantageously applies thermodynamic principles in a system which may include various combinations of a preheater, a degassing unit, a dryer, a steam filter, a compressor, a concentrating tower, and a condensation unit.

A wastewater treatment device has: an ozone generator which supplies ozone; a mixer which mixes ozone supplied from the ozone generator with wastewater and supplies ozone mixed wastewater; an ozone oxidation unit which progresses ozone oxidation in the ozone mixed wastewater while passing the ozone mixed wastewater therethrough and discharges wastewater in which the ozone has been consumed; a biological treatment unit which performs biological treatment on the wastewater discharged from the ozone oxidation unit using microorganisms; and an adjusting device which adjusts the amount of ozone to be mixed with the wastewater by the mixer so that ozone in an amount that inhibits the microorganisms of the biological treatment unit does not remain in the wastewater discharged from the ozone oxidation unit.