A system and method using a subterranean biological reactor can include a pre-reactor storage unit configured to receive a feedstock including a slurry of biologically derived material and at least one pump configured to pump the effluent from the pre-reactor storage unit. The system may include at least one wellbore containing a subterranean biological reactor configured to receive the effluent from the pre-reactor storage unit. At least a portion of the subterranean biological reactor may be configured to perform anaerobic digestion upon the effluent to generate a biogas.

A system for treating organic feedstock, particularly livestock or poultry wastewater. The system employs combined anaerobic and aerobic digestion for converting the wastewater into safe water, fertilizer, and energy, wherein sequencing batch reactors (i.e. ASBR and SBR) are used for the digestion process.

A water filtering system includes providing light deep into a liquid used in applications such as the cultivation of both attached and suspended photosynthetic organisms. The system is configured to inject a stream of bubbles into the liquid and a light source is configured to shines light through the bubbles. The bubbles allow some light to travel deep into the liquid along the length of the bubble stream and scatter/deflect some light out of the bubble stream and into the surrounding liquid including screens for growing algae.

There is provided processes and uses of an inline saturator for maintaining fish in a cage in an open body of water, the process comprising: restricting movement of water into and out of a part of the cage and forming a portion of water within the part of the cage. The process also includes injecting oxygenated water produced by an inline saturator into the portion of water to raise a dissolved oxygen level and to lower a dissolved nitrogen gas level therein. A treatment process is also provided that includes the steps noted above and further including introducing a medicinal substance into the oxygenated water or the portion of the body of water.

Examples disclosed herein relate to a water treatment system including a first cavitation device coupled to a wastewater source via one or more cavitation device lines, a filter coupled to the first cavitation device via one or more filter lines, an equalizing tank coupled to the filter via one or more equalizing tank lines, a second cavitation device coupled to the equalizing tank via one or more second cavitation device lines where a flow from the equalizing tank which enters the second cavitation device is modified and reenters the equalizing tank, a first booster pump coupled to the equalizing tank via one or more first boost pump lines, a contact tank coupled to the first booster pump via one or more contact tank lines, a carbon filtration device coupled to the contact tank, a biological treatment system coupled to the carbon filtration device via one or more biological treatment system lines, a second booster pump coupled to the biological treatment system via one or more second booster pump lines, a polishing mass media filter coupled to the second booster pump via one or more polishing mass media filter lines, a granular activated carbon system coupled to the polishing mass media filter via one or more granular activated carbon system feeds, an ozonation system coupled to the granular activated carbon system via one or more ozonation system lines, a reaction tank coupled to the ozonation system via one or more reaction tank lines, a third booster pump coupled to the reaction tank via one or more third booster pump lines, a reverse osmosis pump coupled to the third booster pump via one or more reverse osmosis pump lines, a reverse osmosis system coupled to the reverse osmosis pump via one or more reverse osmosis system lines, and a SOW tank coupled to the reverse osmosis system via one or more SOW lines.

A method and system for converting an aqueous salt containing sludge into gases and a solid residue is described. The sludge is pyrolyzed and gasified with the assistance of microwave radiation.

A system and method using a subterranean biological reactor can include a pre-reactor storage unit configured to receive a feedstock including a slurry of biologically derived material and at least one pump configured to pump the effluent from the pre-reactor storage unit. The system may include at least one wellbore containing a subterranean biological reactor configured to receive the effluent from the pre-reactor storage unit. At least a portion of the subterranean biological reactor may be configured to perform anaerobic digestion upon the effluent to generate a biogas.

A water treatment system is provided. The system includes a container holding a reactant liquid within the container. The system further includes an electrode capsule removably retained within the container and submerged in the reactant liquid. The electrode capsule operates to generate reactant gas by operating within the reactant liquid. The system includes a cap releasably coupled to an opening of the container. The cap includes a nozzle that allows flow of reactant gas out of the container to treat an amount of water. The use of the system operates to treat water for particular applications and controlling pH level range and/or alkalinity for each particular application.

An aquarium filter assembly includes a transfer tube to convey aquarium liquid and a pre-filter member secured to an end of the transfer tube. The pre-filter member may include a rigid porous media basket, or it may include a micron filter of pleated media.

Increased control and efficiency over the wastewater purification can be achieved by allowing to selectively prioritize catabolic over anabolic processes via prioritization of the digestive function of microorganism in the activated sludge. The gas-dispersion return sludge is created using pure oxygen or oxygen containing trace amounts of ozone, which is blended with return sludge to create a mixture of gas and liquid, which is passed through an atomizer or a pump to instantly render the reactive gas to an ultra-fine bubble state. At least a portion of the ultra-fine bubbles dissolve within the sludge, raising oxygen to a critical level within a short time, activating the dormant microorganisms. The microorganism accumulate enough cATP upon initial encounter with the pollutants to prioritize their digestive function, and when exposed to pollutants present in wastewater, digest the pollutants using biochemical pathways different from the ones used in nature.