405results about "Liquid/slurry treatment" patented technology

A self-sustaining wastewater treatment facility abates greenhouse gas abatement, captures CO2 and produces biomass to address multiple critical environmental needs. The facility includes an array of rotating media wheels that create an optimum ordered mixing of algae for sustained growth. Biomass harvested from the rotating media wheels may be provided to other processing facilities to produce, for instance, bio-fuels. Waste CO2 from the processing facility may also be returned to the treatment system for enhanced algae growth. Bacteria are provided to form a symbiotic relationship with the algae, fueled by sunlight to effectively remove toxic materials from the wastewater. The multi-functional facility may also be integrated into a regenerative facility in which the biomass obtained from the algal and bacterial colonies is used in a separate facility and byproducts of the operation of the separate facility are used by the multi-functional facility to fuel further algal growth.

Methods and devices are disclosed for converting predominantly organic waste materials, such as sludge, into useful byproducts.

Apparatuses and methods for anaerobic digestion of high-solids waste are provided. The methods may include and the apparatuses may be used for moving the solid waste in a corkscrew-like fashion through a closed container. The method may further include moving the high-solids waste into contact with a heating device to facilitate the corkscrew-like movement. Other methods and apparatuses may use at least one of a partition and a conduit from which liquid or gas is discharged.

Apparatuses and methods for anaerobic digestion of high-solids waste are provided. The methods may include and the apparatuses may be used for moving the solid waste in a corkscrew-like fashion through a closed container. The method may further include moving the high-solids waste into contact with a heating device to facilitate the corkscrew-like movement. Other methods and apparatuses may use at least one of a partition and a conduit from which liquid or gas is discharged.

An ICBTL system having a low GHG footprint for converting coal or coal and biomass to liquid fuels in which a carbon-based feed is converted to liquids by direct liquefaction and optionally by indirect liquefaction and the liquids are upgraded to produce premium fuels. CO2 produced by the process is used to produce algal biomass and photosynthetic microorganisms in a photobioreactor. Optionally, lipids extracted from the some or all of the algal biomass is hydroprocessed to produce fuel components and biomass residues and the carbon-based feed our gasified to produce hydrogen and syngas for the direct and indirect liquefaction processes. Some or all of the algal biomass and photosynthetic microorganisms are used to produce a natural biofertilizer. CO2 may also be produced by a steam methane reformer for supplying CO2 to produce the algal biomass and photosynthetic microorganisms.

Sludge from an anaerobic digester is treated to recover one or more of fibers, or solids or liquids with a high nutrient content. The solids or liquids can be used as a fertilizer. The fibers can be used in a plant growing medium. Solids are separated from liquids in the sludge and dried. The solids may be dried to produce a flake or pellet. Ammonia in the liquids is recovered and used to produce a concentrated acidic ammonium salt solution. This solution may be mixed with the solids to produce a nitrogen enhanced solid. The fibers and solids or liquids can also be used in combination to produce an enhanced plant growing medium. A device and process for removing ammonia from a liquid can be used in the system or separately.

An apparatus for recovering nutrients or water from digestate comprises one or more solid-liquid separation units, an ammonia stripping device, and a gas scrubbing unit. In a process, digestate is separated into a solids portion and a liquid portion. Ammonia is stripped from the liquid portion and converted into an ammonium salt solution which may be sold or used as, or blended with, a fertilizer product. Optionally, at least part of the remaining liquid portion may be concentrated to produce brine. The brine is mixed with the solids portion. The mixture may be dried and used as, or blended with, a fertilizer product. Optionally, a least part of the remaining liquid portion may be re-used as dilution water in a digester. A solids portion of the digestate, and one or both of an ammonium salt solution and a brine, may be used as fertilizer without thermal drying.

A method and apparatus for removing settleable solids and unsettleable solids from a partially closed flush system in a diary milking operation whereby a first processing tank bottom removes settleable solids contained therein where the net current flow vertically in the process tank is less than the settling rate of the settleable solids contained therein. The process tank batch feeds a plurality of thickening tanks that are each allowed to settle for a period of time before transferring fluid is to a second separator. The method and apparatus is particularly conductive for feeding a digester.

Apparatus, systems and methods are provided for the improved use of waste heat recovery systems which utilize the organic Rankine cycle (ORC) to generate mechanical and / or electric power from waste heat of large industrial machines (prime movers) generating power from biofuel such as biogas produced during the anaerobic digestion process. Waste heat energy obtained from prime mover(s) is provided to one or more ORC system(s) which are operatively coupled to separate electrical generator(s). The ORC system includes a heat coupling subsystem which provides the requisite condensation of ORC working fluid by transferring heat from ORC working fluid to another process or system, such as anaerobic digester tank(s), to provide heat energy that enhances the production of fuel for the prime mover(s) without requiring the consumption of additional energy for that purpose.

A process for the recovery of nitrogen from anaerobically digested liquid waste and for the collection of the nitrogen as nitrate compounds that can be used to produce fertilizer and compost, includes stripping ammonia from anaerobically digested liquid waste, and converting the ammonia into nitrates via nitrification. The stripping gas is heated above ambient atmospheric temperature to improve nitrogen recovery. The heat can be reclaimed by burning gases generated during the anaerobic digestion process.

A method for comprehensively processing coal-type caustobiolites, predominantly brown coal and leonardite, into humic organic and organomineral fertilizers and intor preparations producing fuel briquettes, including carrying out main processes in a continuous flow; carrying out leaching processes based on aqueous solutions with hydromodules of close to 2, carrying out acidification processes with the formation of humic acid released from a liquid phase into a heavy phase of a coagulated pulp, carrying out mechanical phase separation processes in a centrifugal field, carrying out liquid-phase mechanoactivation and the dispersion of reaction compositions via grinding, using residual “water” in recycling, and including the production of water-soluble humic acids and fuel briquettes and allowing for the production of a wide range of products; preliminarily grinding raw materials to a 03 mm class, and cleaning and electrochemically softening water in preparing reaction aqueous solutions; using a liquid-phase raw material oxidation process, and using liquid-phase mechanoactivation and / or mechanochemical activation, with the dispersion of reaction compositions by means of grinding and by means of dynamically shifting layers having statistical shift rate components, of a medium to be processed, which range from single-digit meters per second to tens of meters per second; accompanying said mechanoactivation with the dosed input into said medium of 1040 MJ of mechanical energy per cubic meter, with the stabilization of said dosing regardless of the drift of all other parameters in said medium to be processed; wherein, said grinding and shifting processes are formed by means of statistical and dynamic characteristics; in this way, a dynamic hydro-pulse effect on a medium to be processed is carried out within a range of frequencies floating between infrasound and frequencies bordering on ultrasound, wherein the processing is carried out beginning with higher frequencies; in addition, providing for automatically maintaining maximum parameters for inputting mechanical energy into the medium to be processed, while automatically restricting same within a sub-cavitation zone in order to prevent the transition of the mechanochemical reactors into cavitation modes.

A process of treating organic waste such as food wastes for anaerobic digestion including preparing a waste-slurry from organic waste such as food wastes, transferring the organic waste-slurry to a paddle pulper / finisher, processing the waste-slurry in the paddle pulper / finisher which reduces the particle size of the solids in the waste slurry and separates the waste slurry into a pulp slurry and pomace, and processing the pulp slurry in an anaerobic digester for the production of methane gas fertilizer and soil amendments. In a further process, the organic waste is slurried by dumping the organic waste in a slurry tank, adding a liquid and mechanically mixing the organic waste and liquid until consistent slurry is attained. In a still further process, the slurry from the slurry tank is processed by forming a macerator-slurry in an inline macerator unit which removes heavy solids and cuts other solids into smaller sizes which can be transferred by a slurry pump.

The present invention is directed to a substantially odorless biological treatment process for solid and liquid organic wastes. The present invention also provides for a novel nutrient rich humus material produced from the biological treatment process. The bioconversion process of the present invention results from low oxygen concentrations and high quantities of microorganisms in a diverse microbial community.

Methods, systems, and apparatuses for anaerobic digestion of waste fibrous material and the recovery of nutrients are provided. Methods, systems, and apparatuses disclosed herein provide mechanisms to release dissolved gases from anaerobic digester effluent. Methods, systems and apparatuses disclosed herein can recover one or more nutrients from anaerobic digested effluent using a range of temperatures, aeration rates, aeration times, pH ranges, and settling times.