Provided herein are lagoon systems and methods for industrial wastewater remediation.

A method of exposing microorganisms to a condition wherein the condition facilitates or inhibits growth of a specific species of microorganisms or a specific consortium of microorganisms. The condition may also stimulate microorganisms to uptake a pollutant from a fluid and/or release the pollutant. Furthermore, the microorganisms may also be harvested and used as a foodstuff for human and animal consumption.

The present invention relates to a method and a device for controlling pollutants in basin water resources cycling utilization in agricultural activity areas. The method includes: providing an acidification tank, an aeration tank and a multi-media constructed wetland connected in sequence, which are 4˜10 m far from basin revetment, feeding basin water into the constructed wetland, adsorbing or degrading heavy metals and organic pollutants by the constructed wetland, and then transporting the treated basin water to the agricultural activity areas. The present invention effectively controls the content of heavy metals that will enter the agricultural activity areas, fundamentally reduces the content of heavy metals in the crops, promotes the growth of the crops, maintains sustainable and healthy development of agriculture, and therefore guarantees human health and safety.

Disclosed a device for preventing and controlling pollutants in the reuse of reclaimed water in agricultural activity areas with extreme water shortage, including A.sup.2/O tank (1), nano-aeration tank (2) and quick soil infiltration device (3) connected in sequence. A.sup.2/O tank (1) is fed with wastewater to be treated, which is treated sequentially in anaerobic, anoxic and aerobic environment, thereafter the supernatant is transported into nano-aeration tank (2). The supernatant treated by nano-aeration tank (2) is transported into quick soil infiltration device (3), and is allowed to flow through one or more layers of fillers laid in quick soil infiltration device (3) to degrade or remove pollutants.

The disclosure relates to a filtration system for harvesting microalgae. The filtration system includes a filter housing with modular filtration units each containing a fungal filter. The fungal filter includes a perforated support with a capture fungus on the support. The fungal filter is adapted to be removed and replaced from the modular filtration unit, for example during operation of the filtration system. The capture fungus is adapted to capture one or more types of microalgae upon contact of the capture fungus with the microalgae, for example via fungal mycelium. During use of the filtration system to treat an influent stream containing microalgae, microalgae are captured and coated on the fungal filters. The coated fungal filters can be easily removed and the microalgae is harvested directly from the perforated support. New replacement filters can be inserted into the filtration system for continuous operation.

Apparatuses and methods for utilizing different algal growth techniques to filter aquarium water under varying conditions, including freshwater, brackish, and saltwater, and including amounts of nutrients (including ammonia, nitrite, nitrate, phosphate, CO2) which vary from low to high levels. Also disclosed are embodiments to operate above water, submerged, or any combination thereof, in separate or synergistic configurations, as well as embodiments to utilize faster-growing algal species to out-compete and overgrow slower-growing species.

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.

The present document describes a carbon allotrope-silica composite material comprising a silica microcapsule comprising a silica shell having a thickness of from about 50 nm to about 500 μm, and a plurality of pores, said shell forming a capsule having a diameter from about 0.2 μm to about 1500 μm, and having a density of about 0.001 g/cm3 to about 1.0 g/cm3, wherein said shell comprises from about 0% to about 70% Q3 configuration, and from about 30% to about 100% Q4 configuration, or wherein said shell comprises from about 0% to about 60% T2 configuration and from about 40% to about 100% T3 configuration, or wherein said shell comprises a combination of T and Q configurations thereof, and wherein an exterior surface of said capsule is covered by a functional group; a carbon allotrope attached to said silica microcapsule. Also described is a carbon allotrope-silica composite material comprising a carbon allotrope attached to a silica moiety comprising a silica nanoparticle having a diameter from about 5 nm to about 1000 nm, wherein an exterior surface of said silica nanoparticle is covered by a functional group.

A water filtering system is provided for growing algae that filters the water. The system may include a container having a cylindrical inner surface and an opening at one end of the container. A clear central core including a cavity may be disposed inside the container and a light source may be disposed inside the cavity of the clear central core. A screen mesh may be disposed inside the container such that a surface of the screen mesh is parallel to the cylindrical inner surface of the container. The system may include an inlet configured to route water into the container and an outlet configured to route water from the container. A lid may cover the opening of the container.

A method of using algae to remove a contaminant or pollutant from a first fluid is provided. The method can include providing a growing apparatus having a first reservoir containing the first fluid and a second reservoir containing a second fluid, and growing the algae using the growing apparatus. The method can further include exposing the algae to the first fluid within the first reservoir where the algae uptakes the contaminant or pollutant from the first fluid, and exposing the algae via a belt to the second fluid in the second reservoir where the algae is stimulated to release the contaminant or pollutant.