Abstract: A mixer support assembly for use in an integrated cover and mixer apparatus and anaerobic digester system incorporating same provided. The digester system includes a tank with an integrated cover and mixer apparatus which provides a completely or substantially gas tight enclosure for the collection of biogas. The integrated cover and mixer apparatus includes a cover, a mixer, and a mixer support assembly for supporting the mixer. The mixer support assembly includes a float ring and a support body that is selectively removable from the float ring. The support body is attached to the float ring by way of a clamping arrangement.

Abstract: A mixer support assembly for use in an integrated cover and mixer apparatus and anaerobic digester system incorporating same provided. The digester system includes a tank with an integrated cover and mixer apparatus which provides a completely or substantially gas tight enclosure for the collection of biogas. The integrated cover and mixer apparatus includes a cover, a mixer, and a mixer support assembly for supporting the mixer. The mixer support assembly includes a float ring and a support body that is selectively removable from the float ring. The support body is attached to the float ring by way of a clamping arrangement.

Abstract: An anaerobic digester apparatus including a container and an integrated cover and mixer system. The container includes vertical or sloped walls and is configured to contain wastewater and waste material. An integrated cover and mixer system is configured to extend over and cover the surface of the wastewater in the container. The cover is maintained on the surface of the wastewater in the container by a plurality of floats coupled to the cover. A mixer float is coupled to the cover with the mixer float including a mixer motor having a shaft extending through the mixer float and in fluid communication with the wastewater. The shaft includes an impeller configured to provide a downdraft mixing motion of the water and waste. The cover and mixer system are effectively integrated and coupled to the container to facilitate an anaerobic digestion of the waste in the container.

Abstract: A system configured to treat a mixture having target molecules and fluid is provided. The system includes a biological reactor containing bacteria configured to remove target molecules from solution. The system includes a chemical reaction tank configured to receive a chemical additive. The system includes a membrane separation system configured to separate solid target molecules from the fluid. The system includes a second pump configured to pump the mixture from the chemical reaction tank to the membrane separation system, to pump treated permeate from the membrane separation system, and to pump retentate from the membrane separation system. The retentate from the membrane separation system is divided into a first portion and a second portion that returns to the biological reactor. The first portion of the retentate mixes the chemical additive, the feed from the biological reactor, the first portion of the retentate, and the contents of the chemical reaction tank.

Abstract: An anaerobic digester apparatus including a container and an integrated cover and mixer system. The container includes vertical or sloped walls and is configured to contain wastewater and waste material. An integrated cover and mixer system is configured to extend over and cover the surface of the wastewater in the container. The cover is maintained on the surface of the wastewater in the container by a plurality of floats coupled to the cover. A mixer float is coupled to the cover with the mixer float including a mixer motor having a shaft extending through the mixer float and in fluid communication with the wastewater. The shaft includes an impeller configured to provide a downdraft mixing motion of the water and waste. The cover and mixer system are effectively integrated and coupled to the container to facilitate an anaerobic digestion of the waste in the container.

Abstract: A system and method for treating wastewater includes a treatment container for receiving and treating wastewater and a mixing/aeration system disposed in the treatment container. Wastewater is pumped under pressure from the treatment container through a solids/liquid separation system, preferably comprising multiple parallel membrane bioreactors, to separate the solids and liquids in the wastewater. Liquid retentate from the solids/liquid separation system is cycled back to the treatment container via the mixing/aeration system. The closed-loop system and method for solids/liquid separation and aeration/mixing provides for reduced equipment requirements and energy usage during operation.

Abstract: A system and method for treating wastewater includes a treatment container for receiving and treating wastewater and a mixing/aeration system disposed in the treatment container. Wastewater is pumped under pressure from the treatment container through a solids/liquid separation system, preferably comprising multiple parallel membrane bioreactors, to separate the solids and liquids in the wastewater. Liquid retentate from the solids/liquid separation system is cycled back to the treatment container via the mixing/aeration system. The closed-loop system and method for solids/liquid separation and aeration/mixing provides for reduced equipment requirements and energy usage during operation.

Abstract: A system and method for treating wastewater includes a treatment container for receiving and treating wastewater and a mixing/aeration system disposed in the treatment container. Wastewater is pumped under pressure from the treatment container through a solids/liquid separation system, preferably comprising multiple parallel membrane bioreactors, to separate the solids and liquids in the wastewater. Liquid retentate from the solids/liquid separation system is cycled back to the treatment container via the mixing/aeration system. The closed-loop system and method for solids/liquid separation and aeration/mixing provides for reduced equipment requirements and energy usage during operation.

Abstract: A improved activated sludge system and method for treating wastewater containing contaminants is disclosed which offers a broad array of advantages over conventional activated sludge wastewater treatment systems, including smaller size, higher rates of operation, higher oxygen transfer efficiency, lower operating costs, and a substantially decreased level of excess sludge production. The improved activated sludge waste treatment system of the present invention has two processing tanks rather than the several tanks that are commonly found in activated sludge systems for treatment and sludge management equalizations, including anaerobic processes. The first processing tank is a contact tank which hosts a reaction which functions not merely to digest the maximum amount of contaminants, but instead to bind contaminants to the microorganisms through absorption, adsorption, precipitation, or digestion so that they can then be removed from the liquid in a solid/liquid separator.

Abstract: A improved activated sludge system and method for treating wastewater containing contaminants is disclosed which offers a broad array of advantages over conventional activated sludge wastewater treatment systems, including smaller size, higher rates of operation, higher oxygen transfer efficiency, lower operating costs, and a substantially decreased level of excess sludge production. The improved activated sludge waste treatment system of the present invention has two processing tanks rather than the several tanks that are commonly found in activated sludge systems for treatment and sludge management equalizations, including anaerobic processes. The first processing tank is a contact tank which hosts a reaction which functions not merely to digest the maximum amount of contaminants, but instead to bind contaminants to the microorganisms through absorption, adsorption, precipitation, or digestion so that they can then be removed from the liquid in a solid/liquid separator.