A method of treating a liquid by creating nanobubbles of a desired gas within a target liquid and allowing the desired gas to react with a target component of the target liquid. The desired gas can be selected to be reactive with the target component, and a desired liquid can be formed after the desired gas reacts with the target component.

A method and apparatus for the separation of gas and liquid-solid slurry under pressure, and passage of the liquid-solid slurry to an atmospheric discharge.

Process of sewage treatment in a continuous, linear and flexible channel, through a modified aerobic biological reactor system, or transformation of an existing anaerobic biological reactor into a modified aerobic biological reactor, coupled with a modified flexible flotation/decantation system, intended for the sewage treatment, to be carried out in a treatment plant, in a continuous, linear and flexible channel, using, as preliminary treatment, a garbage grid and a sandbox, to remove these debris, followed by a primary treatment, where the sewage receives the primary treatment inside an aerobic reactor—modified MBBR, or inside a pond aerated, facultative or anaerobic, transformed into an aerobic reactor—modified MBBR, or even inside an anaerobic reactor—UASB transformed into an aerobic reactor—modified MBBR, followed by a secondary treatment.

A method of preparing and separating biopolymers and biopolymer fractions is useful for wastewater treatment applications from sewage sludge. The method comprising the steps of disrupting the bacterial cell walls of bacteria present in the sewage sludge by at least 75% to release the intracellular contents of the bacterial cells and separating the biopolymers from any contaminants present.

A liquid treatment system and methods for removing contaminants from a liquid flow is disclosed. The treatment system having a treatment zone, a nanobubble diffuser system and a skimmer cassette assembly configured to remove the nanobubble and contaminant agglomeration from the liquid flow. The nanobubble diffuser system configured to diffuse negatively charged nanobubbles into the liquid flow whereby the nanobubbles adhere to positively charged contaminants and the nanobubble and contaminant agglomeration is urged to float towards a surface of the liquid flow in the treatment zone and be removed by the skimmer cassette assembly. In some embodiments, larger bubble diffuse systems are provided to increase the rise rate of contaminants. In some embodiments, the treatment system is a floating vessel. In some embodiments, the treatment system is configured to remove microplastics down to a size of about 1 mm and less.

An ion removal system includes: an electrolysis device configured to generate alkaline water and acidic water by electrolysis; a first flow path and a second flow path through which the alkaline water and the acidic water generated by the electrolysis device are alternately allowed to flow; a hard water flow path connected to the electrolysis device to supply the electrolysis device with hard water; and a fine bubble generation device configured to generate fine bubbles in a flow path upstream or downstream of the electrolysis device, wherein a first flow-rate adjustment valve is connected to the first flow path, and a second flow-rate adjustment valve is connected to the second flow path.

A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.

Disclosed are a method for manufacturing hydrogen microbubbles (A1) and a device (10) thereof. The device comprises air pressure assembly (1) and a water container (2), wherein the water container (2) is loaded with water (A). The air pressure assembly (1) can perform gas suction and pressurization and the gas enters a hydrogen oscillation generation unit (3). The hydrogen oscillation generation unit (3) is internally provided with a magnesium alloy-manufactured hydrogen oscillator (4), and the hydrogen oscillator (4) is reacted with water molecules contained in the gas to obtain magnesium oxide and hydrogen. Then, the chemically reacted gas is sprayed by the hydrogen oscillation generation unit (3) into the water (A) via a gas spray nozzle (5), forming hydrogen microbubbles (A1) containing hydrogen in the water (A).

In a fine bubble generator having a structure in which a columnar portion protrudes from an orifice of a tubular member, the presence of the columnar portion inhibits a flow of a fluid, so that a flow rate of the fluid that generates fine bubbles is limited. In addition, foreign matter may be sandwiched between the columnar portions. It takes time and effort to manufacture the columnar portions. Furthermore, when the columnar portion is supported in a cantilever state, it is difficult to ensure mechanical rigidity and also to ensure durability.

A fine bubble generator includes: an inlet portion that gradually reduces in diameter from an inlet of a tubular body; an orifice continuous to the inlet portion; and an enlarged-diameter portion continuous to the orifice, and the inlet portion, the orifice and the enlarged-diameter portion are sequentially formed. A boundary between the orifice and the enlarged-diameter portion is a radially elevation surface, and a diameter of the enlarged-diameter portion is 3 to 10 times a diameter of the orifice. A concave portion is preferably formed in an outlet peripheral wall.

Provided are a method for producing an ultra-fine bubble-containing liquid, an ultra-fine bubble-containing liquid, and a method for utilizing and a device for utilizing ultra-fine bubbles that allow highly concentrated UFBs to be maintained for a long period of time and that are capable of effectively utilizing the UFBs. To this end, the method for producing an ultra-fine bubble-containing liquid includes an ultra-fine bubble generating step and a dispersing step to disperse the ultra-fine bubbles. In the ultra-fine bubble generating step, the ultra-fine bubbles are generated in a liquid by heating a heating element and making film boiling on an interface between the liquid and the heating element. In the dispersing step, a floc, which includes two or more ultra-fine bubbles, is dispersed into multiple ultra-fine bubbles by applying vibration to the liquid in which the floc floats.