A process for treating an aqueous fluid comprising a biodegradable organic substance the process comprising a bioreactor unit batch feeding stage, wherein the aqueous fluid that is to be treated is fed into a bioreactor unit; a batch reaction stage, wherein the aqueous fluid is microbiologically treated and biogas is produced in the bioreactor unit; a degassing unit feeding stage, wherein an aqueous suspension comprising microbiologically treated aqueous fluid and biomass is withdrawn from the bioreactor unit and fed batch-wise into a degassing unit; and a semi-continuous biomass separator unit feeding stage, wherein the degassed aqueous suspension is withdrawn from the batch degassing unit and fed into a biomass separator.

A method for producing mineral wool composites, including: (a) producing a first mineral wool composite by extracting a portion of circulating water to prepare a first binder composition and spraying it onto mineral fibers, while providing clean water to the circulating water; (b) performing (b1) and (b2) in any order or at the same time (b1) pausing extraction of the circulating water for preparation of the first binder composition and (b2) extracting a portion of the circulating water and storing the extracted circulating water in a first tank; (c) producing a second, different mineral wool composite by extracting a portion of the circulating water to prepare a second binder composition, and spraying it onto mineral fibers, while providing clean water to the circulating water, wherein the circulating water is used to clean a production apparatus for producing mineral wool composites and is filtered and reused in the production apparatus.

A system for producing magnesium chloride includes a removal unit, and a concentration unit that is connected to the removal unit. The removal unit generates feedstock water by removing sulfate ions and sodium ions from treatment target water having seawater as a feedstock. The concentration unit generates a slurry in which magnesium chloride is crystallized by concentrating the feedstock water. The removal unit has a first removal unit which reduces the sulfate ion concentration compared to the sulfate ion concentration in the treatment target water, and a second removal unit which reduces the sodium ion concentration compared to the sodium ion concentration in the treatment target water.

Methods are provided for improved recovery of organic salts, such as ionic liquids or organic salts comprising quaternary organic cations, in an industrial alumina production process, such as the Bayer process. These methods include (i) using an organic salt for the removal of impurities in an industrial process for the production of alumina; (ii) subjecting the spent organic salt to a recycling operation that generates at least one exit stream having a measureable amount of the organic salt {e.g., by entrainment or by solubility of the organic salt in the exit stream); (iii) collecting and treating the exit stream (s) with an inorganic salt, in an amount effective to induce phase separation; and (iv) recovering the organic phase containing the recovered organic salt. These methods and compositions allow alumina refinery plants to use organic salts for removal of industrial process streams in an economical manner, due to the efficient recovery of the organic salt.

An anaerobic digestion system may include a material grinding/pulping portion, a hydrolysis portion arranged downstream of the grinding portion, a multiple chamber anaerobic reactor arranged downstream from the hydrolysis portion and including a gas collection and reintroduction system, a collection system for collecting digestate and gas from the anaerobic reactor.

A liquid purification system includes a system raw liquid feed unit and a filtration unit, which includes a liquid concentration device having an internal partition dividing a variable volume collection cavity for raw liquid coming from an initial stage of liquid filtration and for mixing therein concentrate and a raw liquid displacement cavity. The cavity is connected to a secondary line that supplies raw liquid to the cavity to displace concentrate from the collection cavity and to recycle raw liquid from the displacement cavity through the secondary line under pressure exerted by concentrate and raw liquid in the collection cavity. A filtration unit provides long-term contact between raw liquid and concentrate in the variable-volume collection cavity to provide smooth increase in the concentration of liquid supplied to a liquid purification device.

A water purification system provides clean water for the consumption by livestock by using a continuously recirculating water loop. Optionally, a circulating pump moves the water within the water loop in a flow direction. A water supply inlet is fluidically connected to the water loop to provide additional water. A particle filter system (or systems) is fluidically connected in series and removes dissolved solids or particulates within the water. An ozone purification system and/or with the addition of other antimicrobial or purification agents is fluidically connected in parallel to a portion of the continuously recirculating feedback monitored and control water loop. The ozone purification system is disposed downstream of the particle filter system and RO (or similar) system in relation to the flow direction. A feeding station is connected in series with the continuously recirculating water loop disposed downstream of the ozone purification system in relation to the flow direction.

Disclosed is a method for reducing methane emission from slurry (2) produced in a livestock farm (1). The method comprises the steps of guiding the slurry (2) from the livestock farm (1) to a dewatering unit (12) in which the slurry (2) is at least partially dewatered by extracting a watery fraction of said slurry (13), guiding the slurry from the dewatering unit (12) to a steam dryer (3), drying the slurry in the steam dryer (3), guiding the dried slurry (4) into a pyrolysis reactor (5) to produce pyrolysis gas (6) and biochar (7) through a pyrolysis process in the pyrolysis reactor (5), guiding at least a portion of the pyrolysis gas (6) to a combustion unit (8) in which the pyrolysis gas portion is combusted to raise the temperature of the combusted pyrolysis gas (9), guiding the combusted pyrolysis gas (9) to the pyrolysis reactor (5) to drive the pyrolysis process, guiding the combusted pyrolysis gas (9) from the pyrolysis reactor (5) to the steam dryer (3) to increase the temperature of steam (10) in the steam dryer (3), and heating the watery fraction of the slurry 13 to a temperature at least above 75° Celsius by means of the steam (10) from said steam dryer (3). Furthermore, a slurry treatment plant (20) for reducing methane emission from slurry (2) is disclosed.

The present invention relates to systems and methods for cleaning materials, such as flooring and upholstery. In some cases, the systems and methods use an electrolytic cell to electrolyze a solution comprising sodium carbonate, sodium bicarbonate, sodium acetate, sodium percarbonate, potassium carbonate, potassium bicarbonate, and/or any other suitable chemical to generate electrolyzed alkaline water and/or electrolyzed oxidizing water. In some cases, the cell comprises a recirculation loop that recirculates anolyte through an anode compartment of the cell. In some cases, the cell further comprises a senor and a processor, where the processor is configured to automatically change an operation of the cell, based on a reading from the sensor. In some cases, a fluid flows past a magnet before entering the cell.

In some additional cases, fluid from the cell is conditioned by being split into multiple conduits that run in proximity to each other. Additional implementations are described.

The invention generally relates to the filed of providing a liquid for human consumption. In particular, the invention relates to a system for channeling a liquid such as particularly an aqueous liquid such as water in a circuit and for controlling the contamination of the circulating liquid with microorganisms, as well as to a corresponding method using the same. Furthermore, the invention relates to a method for the effective energy saving in the course of providing a heated liquid for human consumption while controlling the limit values recommended, admissible or acceptable for microorganisms, in which the set temperature of a heating device (8) is adjusted to a value below 60° C., preferably to a value between 40 and 55° C., most preferably to a value between 43 and 48° C.