An aerobic biological treatment apparatus includes a reaction tank (tank body), a water permeation plate horizontally installed in a lower part of the reaction tank, a large-diameter particle layer formed on an upper side of the water permeation plate, a small-diameter particle layer formed on an upper side of the large-diameter particle layer, an oxygen dissolution membrane module disposed on an upper side of the small-diameter particle layer, a receiving chamber formed on a lower side of the water permeation plate, a raw water dispersion pipe supplying raw water into the receiving chamber, a diffuser pipe installed to perform gas diffusion in the receiving chamber and the like. A condensed water drainage pipe branches from an exhaust pipe from the oxygen dissolution membrane module, and a valve is provided.

A device for removing nitrogen and carbon using microporous aerated biofilms is provided, which relates to the field of waste water treatment technologies. The device includes a carbon removal reactor, a first sedimentation tank, an anaerobic ammonia oxidation nitrogen removal reactor, and a second sedimentation tank which are sequentially communicated. A plurality of groups of first microporous aerated biofilm assemblies are arranged in the carbon removal reactor. A plurality of groups of second microporous aerated biofilm assemblies are arranged in the anaerobic ammonia oxidation nitrogen removal reactor. The carbon removal reactor is communicated with the second microporous aerated biofilm assemblies. In the device, nitrogen and carbon are removed via microorganisms loaded by the first microporous aerated biofilm assemblies and the second microporous aerated biofilm assemblies. Sludge loss is reduced by the first sedimentation tank and the second sedimentation tank.

The present disclosure provides a water treatment module, a bioreactor comprising one or more of such modules and a receptive water treatment system. Also provided herein is a method making use of the above module, bioreactor and system. The water treatment module comprises (i) at least one elongated gas enclosure comprising a gas inlet and two vertical walls, at least one vertical wall comprising a water-impermeable and gas-permeable membrane having a water-facing side and a gas-facing side, the two vertical walls separating between water external to the enclosure and gas within the enclosure, the gas enclosure being in a rolled or folded configuration to thereby define a convoluted horizontal path and one or more water-treatment spaces formed between opposite water facing sides of the enclosure; and (ii) a diffuser arrangement comprising gas diffusers configured for introducing a stream of gas into the one or more water treatment spaces.

A method of treating waste activated sludge. More specifically, the disclosure concerns treating waste activated sludge by a membrane aerated sludge digester to reduce of volatile soluble solids (VSS) concentration in the sludge to obtain aerobically treated sludge.

The present disclosure is directed toward membrane biofilm reactors primarily comprising microorganisms that produce chemical fuel products or precursors thereof. Reactors of the present disclosure can primarily comprise acetogens, a methanotrophs, and/or Methanosarcina acetivorans.

Examples disclosed herein relate to a water treatment system including a first cavitation device coupled to a wastewater source via one or more cavitation device lines, a filter coupled to the first cavitation device via one or more filter lines, an equalizing tank coupled to the filter via one or more equalizing tank lines, a second cavitation device coupled to the equalizing tank via one or more second cavitation device lines where a flow from the equalizing tank which enters the second cavitation device is modified and reenters the equalizing tank, a first booster pump coupled to the equalizing tank via one or more first boost pump lines, a contact tank coupled to the first booster pump via one or more contact tank lines, a carbon filtration device coupled to the contact tank, a biological treatment system coupled to the carbon filtration device via one or more biological treatment system lines, a second booster pump coupled to the biological treatment system via one or more second booster pump lines, a polishing mass media filter coupled to the second booster pump via one or more polishing mass media filter lines, a granular activated carbon system coupled to the polishing mass media filter via one or more granular activated carbon system feeds, an ozonation system coupled to the granular activated carbon system via one or more ozonation system lines, a reaction tank coupled to the ozonation system via one or more reaction tank lines, a third booster pump coupled to the reaction tank via one or more third booster pump lines, a reverse osmosis pump coupled to the third booster pump via one or more reverse osmosis pump lines, a reverse osmosis system coupled to the reverse osmosis pump via one or more reverse osmosis system lines, and a SOW tank coupled to the reverse osmosis system via one or more SOW lines.

Provided is a clarifier unit of wastewater treatment system and a system comprising the unit, the unit including a treatment tank having a bottom wall, side walls, influent inlet, clarified water outlet and a sludge discharge outlet; wherein the unit has an oxygen supply assembly, including one or more oxygen supply elements confined to a bottom portion of the tank, each of which includes (i) a water-tight enclosure including oxygen-permeable membranes permitting oxygen permeation by, for example, a diffusion from the enclosure to a surrounding medium, and (ii) a gas inlet for receiving an oxygen-containing gas and a gas outlet for removal of gas.

A device and method for shortcut nitrogen removal and nitrite-oxidizing bacteria activity inhibition are disclosed herein. An embodiment of the present invention provides a hollow fiber diffuser comprising: a plurality of hollow fibers on which bacteria can be attached and grow; and an inlet capable of supplying gas to one sides of the plurality of hollow fibers, wherein the gas includes oxygen and carbon dioxide, nitrite can be produced by the oxygen, and the concentration of oxygen in the gas is adjusted by the oxygen and the carbon dioxide.

A hybrid membrane aerated biofilm reactor (MABR) and activated sludge (AS) system and process are described herein. At least a portion of the AS system includes aerobic mixed liquor, for example in an aerobic tank or zone downstream of a tank or zone containing membrane aerated biofilm modules. The flow of air to the membrane aerated biofilm is modulated considering the ammonia loading rate to the system or to the aerobic mixed liquor, for example according to a diurnal cycle. For example, air flow to the membrane supported biofilm can be below an average or initial air flow rate during a period of low ammonia loading. Air flow to the aerobic mixed liquor may remain essentially constants during the same period. Optionally, mixed liquor around the membrane aerated biofilm modules may be aerated during a period of high ammonia loading.

The present invention relates to a method and a device for preventing and controlling pollutants in basin water resources utilization. The method includes: providing a hydrolysis tank (1), a nano-aeration tank (2) and a vertical subsurface flow constructed wetland (3) connected in sequence, salvaging duckweed and algae in the basin, then crushing, acidizing and digesting them in the hydrolysis tank (1), importing the supernatant obtained in the hydrolysis tank (1) into the nano-aeration tank (2), then mixing the water from the nano-aeration tank (2) with basin water and importing them into the vertical subsurface flow constructed wetland (3), treating to obtain basin water meeting the irrigation requirements.