A system for recovering fat, oil and grease (FOG) from wastewater has multiple annular flotation zones in a concentric configuration surrounding a central column to create progressively increasing surface areas for FOG and solid particles flotation, and thereby enhance FOG recovery and removal. Each flotation zone is equipped with an independent pressurized micro air and ozone bubbles distribution system. A controlled amount of ozone can be injected into the wastewater along with recirculated effluent and micro-size air bubbles. Upon the release of pressurized air-ozone-water mixture, micro-size bubbles are generated and distributed in each flotation zone to effectively float up FOG and solid particles in the wastewater stream.

Wastewater may be reconditioned for re-use in a food processing line. The wastewater is subjected to coarse particle separation on the wastewater to create first stage water, after which large and small particles in the first stage water are separated in a liquid waste separator to create a second stage water. The second stage water is directed to a flocculation settling tank to aggregate remaining solids, and the remaining solids are removed to create a third stage water. Finally, the third stage water is treated with at least one of UV light and chemical antimicrobials to create reusable water. The reusable water is delivered upstream to reduce fresh water requirements. Ferrate (IV) is an exemplary antimicrobial that has broad applications in the food processing line.

Introduced here are systems for treating a wastewater stream to produce an effluent stream. A treatment system can include a sensor for measuring a characteristic of the wastewater stream and/or the effluent stream, a pump for supplying a chemical additive to the wastewater stream, and a controller for varying the flow rate of the chemical additive based on real-time analysis of measurements generated by the sensor. The characteristic could be, for example, turbidity, pH, total suspended solids (TSS), etc. Some embodiments of the treatment system further include a flow meter for measuring flow of the wastewater stream. In such embodiments, the controller may vary the flow rate of the chemical additive based on the measurements generated by the sensor and the flow meter.

A filtration apparatus and methods of installing, using, and retracting the same. A filtration apparatus includes a compression gland, a ball valve, and a filter pipe. A distal portion of the filter pipe has one or more filtration holes. The filtration apparatus may be installed in a process pipe and the distal portion of the filter pipe may be disposed within the process pipe. The filter pipe can be easily retracted from the process pipe without interruption of the industrial process. The filtration apparatus can be automatically cleaned by compressed air or water.

The invention relates to a method for cleaning and/or disinfecting liquid and/or aqueous media, comprising the following method steps: cavitation treatment of the medium, in particular by means of jet cavitation, at a negative pressure <1 bar, preferably 0.3 to 0.7 bar; subsequent treatment of the medium in a hydrodynamic reactor having a a rotating magnetic field and magnetic and/or magnetisable elements, in particular having ferromagnetic needles or a rotating cutting mechanism at a negative pressure <1 bar, preferably 0.3 to 0.7 bar; subsequent separation, in particular sedimentation of the treated medium by means of sludge separation at a negative pressure of <1 bar, preferably 0.3 to 0.7 bar. The invention further relates to an apparatus having the following features: a cavitator formed in particular as a jet cavitator, which is equipped with a negative pressure generator, a hydrodynamic reactor having a rotating magnetic field and magnetic and/or magnetisable elements, in particular having ferromagnetic needles and/or a rotating cutting mechanism, a unit for separation, in particular for sedimentation, preferably combined with a sludge separation apparatus.

Embodiments of the present disclosure can include a method for isolating a contaminate from water comprising: introducing a plurality of aluminum-doped nanoparticles to water, the water comprising the contaminate; contacting the plurality of aluminum-doped nanoparticles with the contaminate to form contaminate-adsorbed nanoparticles; and isolating the contaminate-adsorbed nanoparticles by applying a magnetic field to the water.

The invention relates to methods and apparatuses for treating a condensate stream from a condenser that contains odorous compounds, such as various condensate streams produced in a rendering process. In one embodiment, the condensate stream is treated by adding an oxidizer to the liquid condensate stream to oxidize odor-causing compounds in the stream prior to being treated in a waste water pre-treatment system. In this manner, the odor resulting from these compounds can be reduced or eliminated.

A sulphur denitrification system includes a liquid input fluidly coupled to a source of saltwater that includes nitrate; a liquid output fluidly coupled to the source of saltwater; a plurality of vertically-oriented tanks, at least one of the tanks including a liquid inlet that is fluidly coupled to the liquid input to receive a flow of the saltwater, a volume configured to enclose a plurality of sulphur particles that support denitrification bacteria that biologically transform the nitrate into at least one of nitrous oxide or nitrogen gas, and a liquid outlet fluidly coupled to the liquid output and the liquid inlets of the tanks; and a circulation system configured to circulate a portion of the saltwater though the liquid input to the liquid inlets of the plurality of tanks, through the plurality of tanks, and from the liquid outlets of the tanks to the liquid output and the liquid inlets of the tanks.

Wastewater leaching chambers and leaching channels are disclosed. The chambers may include a recess for receiving a wastewater supply, the recess serving to lower the overall height of the combined chamber and supply. The recess also configured to tightly seat the supply and form a gap therebetween. Leaching channels having a high aspect ratio may also be coupled to or otherwise in fluid communication with the chamber.

The present invention relates to a method to purify nutrient-contaminated water for safe reuse or discharge, while recovering the fertilizer value of the contaminants. The core components of the invention are digestion tanks for the conversion by appropriate fauna and aerobic bacteria of dissolved or suspended organic contaminants into dissolved inorganic contaminants, which are flow-connected to biofiltration tanks for the removal by plant root uptake of dissolved inorganic contaminants. Generally, the digestion and biofiltration tanks are configured as follows: the contaminated water is conducted between one or more digestion tanks containing detritivorous or omnivorous fauna (which feed on suspended contaminants and pathogens) and naturally-occurring aerobic bacteria (which feed on the excreta of the fauna, solubilize and decompose organic contaminants, oxidize nitrogen into nitrates, and compete with pathogens), and one or more biofiltration tanks containing plants rooted in the water (which take up dissolved inorganic contaminants, primarily phosphates and nitrates).