An aquaponic system includes a frame, an aquarium located at a lower portion of the frame and provided with a motor, a plurality of cultivating tanks arranged on the frame and having two opposite sides provided with a plurality of inlet tanks and a plurality of outlet tanks, and a strainer unit mounted on the frame. Each of the outlet tanks is connected with a lower one of the inlet tanks. The strainer unit includes a water outlet port connected with the water inlet pipe, a water inlet port connected with a water feeding pipe, two hollow clamping plates located between the water outlet port and the water inlet port, a filtering sponge clamped between the two clamping plates, a fertilizer ferment chamber located under the water inlet port, and a drain pipe connected with the fertilizer ferment chamber.

The invention relates to a diffusor for adding of gases into water, said diffusor comprising a perforated tube (1) and at least one supply tube (2), said the at least one supply tube (2) is at one end coupled to a source for supplying gas and at the other end in fluid communication with the perforated tube (1), the gas is supplied to the perforated tube (1) through at least one inner supply tube (4; 5; 15) extending from the supply tube (2) to the perforated tube (1). The invention is distinctive in that at the least one inner supply tube (4; 5; 15) is a non-perforating tube and has at least one outlet (4a, 5a, 15a) situated at a free end of the at least one inner supply tube (4, 5, 15), said gas is adapted to be distributed into the perforated tube (1) through the at least one outlet (4a, 5a, 15a).

A method of recovering solids from water-based effluent. A first step involves evaporating wastewater effluent containing a liquid contaminant, such as ammonium to recover a concentrated solution and a water effluent stream. Where the water effluent stream includes solids, further step can be taken to dry the wastewater effluent further to recover solids, such as by using a thin plate evaporator and a heat exchanger disk evaporator.

The present disclosure relates to a biofilter for wastewater digestion, in which a high degree of contaminant removal is obtained with a single device. In order for these levels to be achieved, the following are essential: the shape of the biofilter, the supply/discharge ratio of the biofilter, the position and height of each of the components and, finally, the combination of two packed zones, namely: a random zone, and a zone arranged in the form of ringed or corrugated tube bundles.

A method and an apparatus for receiving manure from a vacuum truck, as that manure is collected from alleys of a dairy barn, includes receiving the manure in a mixing basin. The received manure is diluted in the mixing basin with a jet of water discharging a sufficient volume of water to form a sand-laden manure flow having a velocity of over 3 feet per second and dilute the received manure into a sand-laden manure suspension of less than seven percent manure solids. The resulting sand laden manure suspension is conducted into a vestibule of a sand settling lane to slow the flow of the sand laden manure suspension to enter a sand settling lane at a velocity of less than 1.25 feet per second. Sand is collected in the sand settling lane.

A method for optimizing filtration in an aquaculture system. The method for optimizing filtration includes, taking at least one sample of matter from an aquaculture system, defining at least one predetermined characteristic to test the sample of matter for, testing the at least one sample of matter, determining if the at least one predetermined characteristic is present within the sample, modifying resource distribution within the aquaculture system, taking at least two samples of matter within the aquaculture system, re-defining at least one predetermined characteristic to test the at least two samples of matter for, testing the at least two samples of matter, determining if the re-defined at least one predetermined characteristic is present within the at least two samples of matter and ensuring the filtration system will retain a state of optimization.

An enclosed incubation system for production of trout fish is disclosed. The incubation system includes: an ultraviolet unit to disinfect water prior to entering the system, a disinfecting tank to disinfect water, a plurality of water tanks to supply water, a water heater, a plurality of fish tanks, a plurality of inlet and outlet valves, a plurality of canals, a first and a second aeration pump to aerate the plurality of the fish tanks.

According to present disclosure, there is disclosed an algae growth and cultivation system that provides a cost-efficient means of producing algae biomass as feedstock for algae-based products, such as, biofuel manufacture, and desirably impacts alternative/renewable energy production, nutrient recovery from waste streams, and valued byproducts production. The system as discussed herein is an integrated systems approach to wastewater treatment, algal strains selection for byproducts production, and recycle of algal-oil extraction waste or additional algae harvested as feedstock for fertilizer production. Embodiments of a system as discussed herein present an economically viable algae production system and process that allows algae-derived products such as biofuels, fertilizer, etc. to compete with petroleum products in the marketplace.

A water quality measuring system includes a first introduction section for introducing rearing water as a sampling target, and a first adding section which adds an acid to the rearing water introduced by the first introduction section, and a nitrous acid sensor whose measurement target is nitrous acid and which measures the measurement target concentration of the rearing water to which the acid has been added by the first adding section. The water quality measuring system includes a second adding section which adds a base to the rearing water introduced by the first introduction section, and an ammonia sensor whose measurement target is ammonia and which measures the measurement target concentration of the rearing water to which the base has been added by the second adding section.

A process for purification of waste from zootechnical sources or from small agri-food companies is provided. A plant for carrying out the wastewater treatment process is also provided.