One or more new, or existing, or modified, open bottom bio-remediation reactors R are contained within a commercial, industrial, or municipal waste water aeration treatment facility or tank directly above existing and/or new stand-alone diffusers located on the bottom of the facility or tank. The reactors R increase solubility of air and/or oxygen in water, increase energy efficiency, increase through put of treated waste water, and improve bio-remediation of the waste water. Also, a tube reactor having no packing substrates in a non-tube area is described.

One or more new, or existing, or modified, open bottom bio-remediation reactors R are contained within a commercial, industrial, or municipal waste water aeration treatment facility or tank directly above existing and/or new stand-alone diffusers located on the bottom of the facility or tank. The reactors R increase solubility of air and/or oxygen in water, increase energy efficiency, increase through put of treated waste water, and improve bio-remediation of the waste water. Also, a tube reactor having no packing substrates in a non-tube area is described.

The present invention provides a cage particle distribution system for wastewater treatment comprising contactors. Said contactors include shells and the interior of said shells is a hollow cavity. At least one of the side walls, the upper surface and the lower surface of said shells are equipped with through-holes. Particles are loaded inside said shells and said particles can carry some microorganisms on their surfaces at least. Said cage systems are placed in the water of a wastewater system or a wastewater treatment system and one or multiple said cage systems can be placed. Separate aeration and/or liquid distribution into each individual cage system disperse particles in the system by the gas and/or liquid, which improves the efficiency of wastewater treatment.

Provided are an immobilization carrier, a polyether compound used for production thereof and a method for producing the carrier. The immobilization carrier have both excellent strength and toughness while a content of a polymer forming hydrous gel is suppressed, The immobilization carrier includes a polymer having a repeated unit provided with a bisphenol group and a polyoxyalkylene group bonded to the bisphenol group. The polyoxyalkylene group is formed via copolymerization between an oxyethylene group and an oxyalkylene group with 3 or more carbon atoms and optionally having a substituent. A method for producing the immobilization carrier includes the step of preparing hydrous gel via polymerizing a polyether compound in an aqueous solution. The polyether compound includes a bisphenol group, a polyoxyalkylene group and a polymerizable group. The immobilization carrier may be applied to a microorganism immobilization carrier used for treating wastewater.

For bio-electrically generating electric power from organic ingredients of a waste water flowing in a flow direction, an anode is immersed in the waste water in a first spatial area, and oxygen is supplied to a cathode which is electrically connected to the anode and arranged in a second spatial area delimited from the first spatial area by means of a proton-permeable membrane. A voltage between the anode and the cathode is increased by a DC/DC converter located at the anode and the cathode, and a further voltage between a further anode in said or a further first spatial area and a further cathode in said or a further second spatial area is increased by a further DC/DC converter located at the further anode and the further cathode. A DC voltage link is charged with the DC/DC converter and the further DC/DC converter connected in parallel to the DC voltage link.

Provided is a device with microorganism-coupled activated carbon for removing agricultural chemicals in farmland drainage water, comprising a water-permeable mounting chute means (1), a coarse grid intercepting mesh (8), an insertable filter wall (3) and fixing piles (4); wherein the water-permeable mounting chute means (1) is provided with a slot (2) and a narrow groove (9), is closed at the bottom and the two sides parallel to the length direction of a farmland drainage ditch by a bottom baffle (10) and side baffles (5), respectively, and the water-permeable mounting chute means (1) is fixed to the farmland drainage ditch by the fixing piles (4); the insertable filter wall (3) is inserted into the slot (2); and the coarse grid intercepting mesh (8) is inserted into the narrow groove (9). The device has the advantages of small occupied space, high efficiency of agricultural chemical removal, thorough purification of the water body layer by layer, no influence on the drainage capacity of the ditch, convenient replacement and cyclic utilization, simple production, low implementation cost and ease of maintenance and management when being installed in the farmland drainage ditch.

A wastewater treatment device has: an ozone generator which supplies ozone; a mixer which mixes ozone supplied from the ozone generator with wastewater and supplies ozone mixed wastewater; an ozone oxidation unit which progresses ozone oxidation in the ozone mixed wastewater while passing the ozone mixed wastewater therethrough and discharges wastewater in which the ozone has been consumed; a biological treatment unit which performs biological treatment on the wastewater discharged from the ozone oxidation unit using microorganisms; and an adjusting device which adjusts the amount of ozone to be mixed with the wastewater by the mixer so that ozone in an amount that inhibits the microorganisms of the biological treatment unit does not remain in the wastewater discharged from the ozone oxidation unit.

Provided is a nano-photocatalyst-microorganism composite multilayered light-transmitting combination support, comprising a plurality of wave-shaped plexiglass plates (1), a tandem rod holder (4), hollow elastic spacers (5), and fixing screws (6); each of the wave-shaped plexiglass plates (1) is provided with four fixing holes (7); the tandem rod holder (4) is provided with four tandem rods (8), and the four tandem rods (8) pass through the fixing holes (7); the tandem rods (8) between the two adjacent wave-shaped plexiglass plates (1) pass through the hollow elastic spacers (5); each of the tandem rods (8) is provided with a fixing screw (6) at the top end; each of the wave-shaped plexiglass plates (1) have different loading layers on the upper and lower surfaces, with a nano-photocatalyst-loading layer (2) on one surface and a degrading bacteria-loading layer (3) on the other surface. Also provided is a method of making the nano-photocatalyst-microorganism composite multilayered light-transmitting combination support.

The invention discloses a fast biofilm formation method for an organic filler during treatment of sewage with a low C/N ratio, and belongs to the field of biofilm process for sewage treatment. The invention improves the effect of biofilm culturing by changing the micro-interface acting force of the filler and accelerating the attachment and colonization of microorganisms on the filler through increase of bacterial quorum-sensing molecules. As compared with a conventional biofilm culturing method, in the invention the biofilm culturing is rapid and operated conveniently, has strong practicality, and is a fast biofilm formation method for an organic filler, which is adapted for treatment of sewage with a low C/N ratio under an aerobic, anoxic or anaerobic condition.

A reactor for treating water, the reactor comprising a buoyant structure for supporting at least one cell for suspension in a body of water in use, wherein each cell is removeably attachable to the buoyant structure and is arranged to house biomedia. A water treatment system comprising the reactor in a body of water. A method of treating water comprising passing water to be treated through the reactor in a body of water.