The invention relates to the development of a carrier material providing high surface area for biofilm formation in wastewater treatment plants and a carrier material surface modification method for accelerating and enriching biofilm formation.

A system and method to treat wastewater or non-potable water using a reactor that is perforated at its bottom arranged in a vessel at a depth. Air pressure from an air grid at a reactor bottom induces an uplift of liquid and media to move highly aerated liquid through the media, which provides surfaces for microbial attachment and growth. An alkali porous material is suspended in the upswelling liquid that dissolves to reduce acidity and balance the pH of the liquor. The upswell in the reactor is at a higher elevation than the vessel giving directional discharge outlets head or velocity creating stirring and mixing to an area surrounding the reactor. Interchange of mixed and unmixed liquor is provided via the bottom perforations. Provision is also made for unit to cycle off and on so that the media can decant and for solids to settle out of the treatment unit.

A system for transferring marine life within an aquaculture facility including a plurality of segregated storage facilities each containing water for marine life, maintained within a predetermined temperature range and supported at independent ground levels. The storage facilities are successively disposed and structured to contain marine life at different stages of growth. A transfer assembly includes a path of fluid flow interconnecting successive ones of said plurality of storage facilities in fluid communication with one another, wherein at least a majority of a length of said path of fluid flow is disposed beneath the independent ground levels at a predetermined depth, which is sufficient to facilitate maintenance of the path of fluid flow within the predetermined temperature range, via geothermal cooling. The transfer assembly may also connect a holding facility, which may be dimensioned and structured to transfer mature marine life, possibly on an on-demand basis, to the harvesting facility.

A moving bed biofilm reactor system for growing microorganisms comprising a reservoir containing a fluid that contains nutrients conducive to growth of microorganisms and a plurality of inert biomass carriers having a surface area configured to support growth of microorganisms is provided. The microorganisms may be used to remove a pollutant from a fluid. Furthermore, the microorganisms may be harvested and used as a foodstuff fertilizer, biofuels, and bioplastics.

An organic industrial tailwater treatment method based on simultaneous combination of ozonation and biodegradation (SCOB), includes: placing a sponge carrier that is internally attached and grown with a biofilm in a recycle reactor; introducing air into an ozone generator to generate ozone; and introducing the ozone into the recycle reactor; where the ozone output of the recycle reactor is adjusted through a flow meter and an ozone generator adjustment knob, the sponge carrier is uniformly fluidized under the action of the ozone, and microorganisms loaded on the sponge carrier cooperate with the ozone to degrade pollutants. Easily degradable organic substances produced from the ozonation of the present disclosure can be quickly utilized by the microorganisms in the internal pores of the composite carrier, which improves the degradation and mineralization efficiency of pollutants.

The present invention provides a nitrogen treatment method which can suppress the production of nitrate nitrogen to stabilize the concentration of nitrite nitrogen in a nitritation treatment in which ammoniacal nitrogen is biologically oxidized to produce the nitrite nitrogen. A nitrogen treatment method includes a nitrification treatment step of producing nitrite nitrogen by oxidizing ammoniacal nitrogen contained in water to be treated, using microbial sludge, wherein: a volume load of the ammoniacal nitrogen in the nitrification treatment step is set to a high load of 0.3 kg-N/m.sup.3.Math.day or more and 5 kg-N/m.sup.3.Math.day or less; and in the nitrification treatment step, at least one of a treatment of adjusting a pH of the water to be treated to pH 8 or more and pH 10 or less and a treatment of applying an inactivating operation for sterilizing microorganisms or causing bacteriostasis to the microbial sludge is performed.

A completely biological method for removing a first group of micropollutants of pharmaceutical origin and a second group of micropollutants of pharmaceutical origin from raw wastewater includes: providing a first buffer tank upstream of a bioreactor; providing a moving bed membrane bioreactor (MB-MBR) for developing biomass growth both on a fixed support and in suspension in a form of flocs, and on mobile supports, the bioreactor obtaining an effluent with a COD concentration of organic matter of less than 50 mg l.sup.−1 and a total nitrogen concentration of less than 15 mg l.sup.−1; providing a biofiltration tank, separate from the first buffer tank of the bioreactor, that includes one or more biologically activated carbon (BAC) columns containing activated carbon; supplying the first buffer tank upstream of the bioreactor with raw wastewater containing micropollutants of pharmaceutical origin; pretreating the wastewater by passing the wastewater through a fine mesh sieve.

A net cage for farming of marine organisms is described, where the net cage is comprised of a main chamber to hold the marine organisms and where the net cage has further water chambers to treat the water before it is circulated back to the main chamber.

A water treatment system that removes calcium and magnesium using coagulants and pH controls, aqueous phase organic materials from water using a biological removal system that includes microorganisms and a physical separation system that includes sparging equipment for sparging the water to remove non-aqueous phase liquid organic materials, volatile phase organic materials. An apparatus, system and method for pretreating oilfield produced water to completely remove or significantly reduce concentrations of substances that are known to interfere with downstream recovery of metals including lithium. This technology facilitates a more efficient and cost-effective extraction method from alternate sources to meet the increasing global demand.

A recovery system of composite powder carrier in HPB municipal wastewater treatment includes a biochemical tank and a concentration tank. The composite powder carrier is added to the biochemical tank for biochemically treating on the wastewater. The mixed liquid is then made to flow into the concentration tank. The supernatant obtained after filtration is then discharged. The concentrated sludge is returned to the biochemical tank, and the excess concentrated sludge is transported to a separator. The separator separates the substances with large specific gravity from those having smaller specific gravity, and the substances with large specific gravity are recycled to the biochemical tank for reuse. Matter having smaller specific gravity is discharged. The separator can be used to separate the composite powder carriers for recycling, which improves the utilization rate of the composite powder carriers and reduces the operation cost of the HPB technology for wastewater treatment.