A method of producing a final product from a wastewater dissolved air flotation (DAF) sludge which includes the following dewatering step: 5dewatering of the sludge, an aged sludge or a pre-processed sludge to produce a sludge filter cake and a filtrate; such that the pre-processed is sludge, or aged sludge, that has undergone additional processing steps prior to dewatering and aged sludge is sludge that has been stored for a period of time, wherein the dewatering step is a mechanical dewatering step 10 carried out at a maximum of 30 C. which results in a sludge filter cake that does not flow under its own mass.

Provided is a method of treating wastewater, which can treat wastewater, particularly organic wastewater while saving labor and decreasing the environmental impact by improving deterioration in the purification performance due to clogging of the filter bed, which is regarded as a problem when purifying wastewater, particularly organic wastewater having high SS concentration, BOD, and COD by a constructed wetland and by decreasing increases in the area and the number of stages of wetland required due to an increase in the BOD and COD load. A method of treating wastewater provided comprises: an aggregate floc forming step of forming an aggregate floc by adding a polymer flocculant to wastewater; a solid-liquid separation step of obtaining separated water by solid-liquid separation of the aggregate floc; and a purification step of purifying the separated water by using a constructed wetland.

A fluid treatment system having an electrocoagulation unit for treating fluid. In one embodiment, the electrocoagulation unit is has a cathode with an electrically conductive cathode tube surrounding a reactor cell. The reactor cell is provided with a non-electrically conductive reactor shell having a plurality of perforations, a plurality of reactor beads disposed within the reactor shell, and an anode rod disposed within the reactor shell in direct contact with at least a portion of some of the reactor beads. When an electrical current is applied to the anode rod and the cathode tube, an electric gradient is created between the anode rod and the cathode tube ionizing contaminants in a fluid passed from the fluid inlet to the fluid outlet.

A method of treating dairy wastewater includes receiving a dairy wastewater stream at a first pH from a dairy processing facility at an equalization tank, receiving the dairy wastewater stream from the equalization tank at a pump, and, based on at least one of the first pH or a second pH of the dairy wastewater stream upon exiting the equalization tank, receiving an acid to the dairy wastewater stream prior to the pump. A pump outlet stream includes a mixture of the dairy wastewater stream and the acid at a third pH that is lower than the first pH. The method also includes receiving the pump outlet stream at a pipe reactor in fluidic communication with the pump, then receiving the pipe reactor outlet stream at a dissolved air flotation (DAF) unit, and then outputting a liquid stream at a final pH from the DAF unit.

Provided herein are methods of organic waste stream conversion including fermenting an organic waste stream with an inoculum using arrested methanogenesis to generate an organic product. The inoculum includes an anaerobic consortium isolated from cheese, yogurt, saline soil, kefir, and/or probiotics and the anaerobic consortium is pretreated to transform the anaerobic consortium into an acidogenic consortium.

In a method of anaerobic treatment of an organic waste stream (1), a stream originating from an anaerobic reactor (5) is fed to a first separating unit (33) to be separated into a sludge fraction (7) containing between 50% and 80% of the solids by weight and a second fraction (7). The second fraction (7) is fed from the first separating unit (33) into a Dissolved Gas Floatation (DGF) unit (16). The sludge fractions (7) and (9) from the separator units (33) and (16) are fed back to an inlet 41 of the reactor 5.

A method for treating organic wastewater includes: proceeding with anaerobic fermentation on organic wastewater to obtain a fermentation liquid; nitrifying a portion of the fermentation liquid to obtain a first fermentation liquid containing nitrate nitrogen, and separating the remaining portion of the fermentation liquid to obtain a second fermentation liquid containing propionic acid; mixing the first and second fermentation liquids to obtain a mixture; and removing nitrogen and phosphorus from the mixture and then proceeding with sedimentation to obtain a sediment and a supernatant discharged as purified water. An organic wastewater treating system includes an anaerobic fermentation reactor, an aeration tank, a fermentation liquid separating equipment, a biological removal reactor for removing nitrogen and phosphorus, and a sedimentation tank. The mixing ratio of two fermentation liquids is controlled to achieve balance between carbon, nitrogen, and phosphorus during the nitrogen and phosphorus removal process, achieving highly efficient and simultaneous removal of carbon, nitrogen, and phosphorus without additional carbon source.

The invention relates to cold temperature-resistant microbials for use in waste water treatment. More particularly, the invention relates to isolated Bacillus strains ALG and DRT, and strains having all of the identifying characteristics of these strains, and combinations thereof, for a use comprising the above-mentioned use.

A biomass-derived protein compound has a high concentration of protein and can be made to have a very low concentration of fat and water; even when the biomass feedstock has a high fat concentration. The biomass-derived protein compound may be a whole protein that is non-denatured and enzymatically digestible. This unique protein compound can be produced from molecules from more than one source organism, including various animals and/or plant feedstocks. The unique protein compound is derived from a unique biomass method and apparatus for the treatment of a biomass stream to extract and separate an essentially solvent-free product from the biomass stream. In this unique method the solids content of the biomass stream is increased by bringing the biomass stream into contact with a moderately pressurized liquefied gas solvent, to create a high solids content biomass stream and introducing the high solids content biomass stream to an extraction apparatus.

A method of fabricating carbon quantum dots (CQDs) from camel hair using a bio-char synthetic approach. In an embodiment, the method comprises adding dried camel hair to water to provide a mixture; subjecting the mixture to a hydrothermal treatment in a hydrothermal reactor at a temperature of about 150 C. to about 250 C. for a period of time ranging from about 8 hours to about 13 hours to provide a product including camel-hair derived carbon quantum dots. The camel-hair derived carbon quantum dots can be an effective electrocatalyst in a microbial fuel cell for bioelectricity generation.