A wastewater treatment system including a contact tank, a dissolved air flotation unit, a fixed film reactor, and a solids-liquid separation unit is disclosed. A method of treating wastewater with a dissolved air flotation unit and a fixed film reactor is also disclosed. A method of retrofitting a fixed film reactor wastewater treatment system including providing a contact tank and a dissolved air flotation unit is also disclosed. A method of facilitating increased operating efficiency of a fixed film wastewater treatment system including providing a dissolved air flotation unit is also disclosed.

A wastewater treatment apparatus includes a treatment mechanism that treats a wastewater containing an organic chromaticity component with an enzyme produced by Bacillus proteolyticus.

A water treatment system includes a flat plate rotating so as to be partially immersed in a raw water and an imaging device configured to image the flat plate to which microorganisms adhere. The water treatment system further includes a calculator configured to calculate an amount of the microorganisms adhering to the flat plate, a controller configured to control the water treatment system and a lighting device radiating light on the flat plate.

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.

A nano zero valent iron biological coupling device for organic wastewater includes a continuous flow stirred reactor, a flocculation sedimentation device and a membrane bioreactor arranged in series. A nano zero valent iron feeding device is arranged in the continuous flow stirred reactor, a flocculant and a coagulant aid are arranged in the flocculation sedimentation device, and a microbial reaction liquid is arranged in the membrane bioreactor. A nano iron biological coupling process includes: S1, placing the organic wastewater in the continuous flow stirred reactor, adding the nano zero valent iron, stirring and mixing; S2, placing the organic wastewater treated after S1 in the flocculation sedimentation device; S3, placing the organic wastewater treated after S2 in the membrane bioreactor and interacting with the microbial reaction liquid; S4, performing a membrane separation on the organic wastewater treated after S3 in the membrane bioreactor to obtain purified organic wastewater.

The invention relates to a device and method for filtering and/or purifying liquid. The device comprises: an outer housing provided with at least one outer opening; an inner housing which encloses an inner chamber, wherein the inner housing is provided with an inner opening; a purification chamber which extends between the outer housing and the inner housing, wherein the at least one outer opening debouches in the purification chamber and wherein the purification chamber is provided with a carrier material on which a biological purification film can form for filtering and/or purifying water; and wherein a side wall of the inner housing which is adjacent to the purification chamber is provided with one or more fluid throughfeed openings, and wherein, during use of the device, a substantially vortex-like fluid flow path is formed in the purification chamber, between the at least one outer opening and the fluid throughfeed openings.

A system and method is provided for water and wastewater treatment. The system comprises a fixed film biological process and a ballasted flocculation process.

A wastewater treatment system including a contact tank, a dissolved air flotation unit, a fixed film reactor, and a solids-liquid separation unit is disclosed. A method of treating wastewater with a dissolved air flotation unit and a fixed film reactor is also disclosed. A method of retrofitting a fixed film reactor wastewater treatment system including providing a contact tank and a dissolved air flotation unit is also disclosed. A method of facilitating increased operating efficiency of a fixed film wastewater treatment system including providing a dissolved air flotation unit is also disclosed.

A method of exposing microorganisms to a condition wherein the condition facilitates or inhibits growth of a specific species of microorganisms or a specific consortium of microorganisms. The condition may also stimulate microorganisms to uptake a pollutant from a fluid and/or release the pollutant. Furthermore, the microorganisms may also be harvested and used as a foodstuff for human and animal consumption.

A multi-functional slurry processing system (“VARCOR”) and associated methods is disclosed. The present examples provide a multi-functional slurry processing system incorporating systems and methods for separating liquid and solid components in slurries. In particular the systems and methods described herein produce clean water, dried solids, and potential concentration of desirable constituents with a boiling point lower than water. At least one example of the multi-functional slurry processing system provides a self-contained processing facility configured to efficiently convert high water-content slurries into its constituent solid and liquid fractions and subsequently generating and collecting clean water and concentrating desirable constituents with a boiling point lower than water. The multi-functional slurry processing system advantageously applies thermodynamic principles in a system which may include various combinations of a preheater, a degassing unit, a dryer, a steam filter, a compressor, a concentrating tower, and a condensation unit.