The present invention has an object to efficiently precipitate a paint residue. A system (10) of collecting a paint residue includes: a bubble-containing functional water generation portion (6) which is configured so as to generate functional water that is bubble-containing alkaline water or acid water; a paint collecting portion (1) which collects the paint residue with the functional water; and a storage portion (2) which recovers the functional water from the paint collecting portion and which stores the functional water.

A near-zero-release treatment system and method for high concentrated organic wastewater is in the chemical engineering and environment protection field, whose core technology is SCWO. The wastewater and sludge are grinded by the homogeneous pump, pressurized by high-pressure plunger pump, transported to successive pipeline for preheating and mixing with the oxygen and undergoes SCWO reaction in the reactor. After pressure release in the pressure relief device, the reacted fluid passes through the self-cleaning filter and gas liquid separator for insoluble solid and gas separation; then enters the MVR for crystallization of the soluble salts to realize near-zero-release of the feeding. The regular water treatment technology (coagulation sedimentation, membrane biotechnology, membrane technology, etc.) is adopted to complement SCWO, which lowers the operating parameters of the reactor and cuts the operating cost by treating the remaining COD with regular water treatment technology.

Some implementations can include method and system to collect and remove micro plastics from a water environment or ecosystem.

Initial liquid containing fine bubbles is produced by mixing water and air (step S11). Fine bubbles have diameters of less than 1 μm. The density of bubbles in the initial liquid is measured (step S13), and when the measured density is less than a target density (step S14), the initial liquid is heated and reduced in pressure so that the liquid is vaporized (step S15). As a volume of the liquid decreases, the density of fine bubbles increases, and high-density fine bubble-containing liquid is easily obtained. Alternatively, by increasing the density of fine bubbles in the initial liquid with using a filter that does not pass all fine bubbles, high-density fine bubble-containing liquid is easily acquired (step S15). When the density of bubbles in the initial liquid is greater than the target density, the initial liquid is diluted (step S16).

A system for separating contaminants from fluids provides a modular mobile continuously operable site configurable multi-phase filtering system having an oil water separator 100, a dwell tank 220, a waste tank 250, an electrocoagulator 120 having plural concentrically aligned perforated tubular sacrificial electrodes, a first and a parallel second particulate filter 300A, 300B, a first and parallel second step-down membrane filter 400A, 400B, an optional ultra filtration filter 500, an optional reverse osmosis filter 600, a mixing station 700 and a totalizer and sensor array 900 to analyze, filter and treat fluids by separating contaminants and particulates and adjusting chemical content to meet specifications desired which will allow the use and re-use of the filtered fluid and the separated contaminants.

A bio-reactor for treating wastewater effluent using microorganisms includes a tank having a first volume, a second volume, and a third volume, each volume having an outer wall; an inlet in the first volume to introduce wastewater effluent; a central channel located within the second volume; a first air supply to introduce air into wastewater effluent located in the central channel within the second volume; a packed media bed of small components, the packed media bed being located in the second volume; a second air supply to introduce air into wastewater effluent located in the third volume to assist movement of wastewater effluent upward from the third volume, through the packed media bed, to the first volume; and an outlet in the third volume to drain a portion of the wastewater effluent.

A produced water evaporation system for spray evaporating water comprising a geothermal heat retainment system and an evaporation system is disclosed. The geothermal heat retainment system comprises a first feed inlet, an optional solar collection system or a heat exchanger, and a first discharge outlet. The evaporation system comprises a second feed inlet, a pump, a drip manifold comprising a drip orifice or a manifold comprising a nozzle, a container, wherein a first portion of a ceiling of the container is constituted by a demister element such that the first portion of the ceiling is entirely configured as an outlet for evaporated water and wherein a second portion of the ceiling is adjacent to an upper edge of a wall of the container, a second discharge outlet, and an air system comprising an air blower and an optional air preheater, wherein the air system is disposed through the wall of the container and wherein the air system discharges air flow counter to the produced water and/or water droplets from the drip orifice. A method of using the produced water evaporation system is also disclosed.

Methods and devices use one or more of pressure, pressure drop, increased temperature, rate of temperature increase, and inert gas to kill microbes. Utilizing a method or device, liquid is subjected to a pressure drop and heated either during and/or after the pressure drop. The liquid may be heated while in droplet phase, in a liquid volume, or both. Inert gas may be dissolved into the liquid at a pressure greater than 1 Bar. The pressure is later reduced, which causes inert gas to be released from the liquid. Other method steps and processes are also disclosed.

A bubble generator includes a diaphragm, a piezoelectric vibrator, and a light source. The diaphragm includes multiple micro apertures, a first surface to be in contact with the water in the water tank and a second surface to be in contact with the gas. The diaphragm transmits ultraviolet light. The piezoelectric vibrator vibrates the diaphragm. The light source emits ultraviolet light to the water in the water tank from a side region of the diaphragm near the other surface.

A bubble generator includes a diaphragm, a tube, and a piezoelectric vibrator. The tube includes a first end portion and a second end portion opposite to the first end portion, and the tube is connected to the diaphragm at the first end portion so as to support the diaphragm. The piezoelectric vibrator is fixed to a ring-shaped collar extending radially outward from the tube at a position in a vicinity of the second end portion of the tube, and the piezoelectric vibrator vibrates the tube. The first end portion of the tube is joined to the water tank.