Embodiments of the present disclosure are directed towards a bioreactor, a floating bioremediation platform system, and a process for reducing sulfates, in surface water.

The invention relates to the development of a carrier material providing high surface area for biofilm formation in wastewater treatment plants and a carrier material surface modification method for accelerating and enriching biofilm formation.

A method for modifying a wastewater treatment device, the method including: 1) fixing a filling support in a wastewater pool, where the filling support includes a support frame; the support frame includes a hollow shaft, a fixed ring, and at least one vane; 2) adjusting the height of the filling support, until the fixed ring is submerged below the liquid level of the wastewater pool, where the water intake velocity of the wastewater pool is no less than 0.25 m/s, whereby a water current is produced and drives the support frame to rotate; 3) adding a functional liquid into the hollow shaft; and 4) adding an enzyme mixture to the hollow shaft when the rotation speed of the support frame is less than a first preset value, until the rotation speed of the support frame reaches a second preset value.

The present invention is concerned with a fibre membrane for use in a Membrane Supported Biofilm Reactor (MSBR) or the like, the fibre membrane comprising a substantially cylindrical sidewall defining an internal lumen from which gas can permeate through the sidewall, and characterised in that at least a part of an outer surface of the fibre membrane is engineered to define at least one biofilm retaining region which acts to retain a quantity of biofilm therein, in particular when the fibre membrane is subjected to a high sheer biofilm control event, such as experienced during a reactor cleaning cycle, for removing excess biofilm in order to prevent clogging of the reactor.

A wastewater treatment apparatus for remediation of a wastewater treatment system has a septic tank with a lower sludge layer and an upper liquid effluent layer. The apparatus is comprised of a brush that includes a brush arm having a first end, a second end, and bristles disposed on the brush arm between the first end and the second end. The brush is configured to be positioned within the liquid effluent layer in the septic tank in a vertical orientation such that the second end is disposed below the first end.

A pond filter unit and a method for operating a pond filter unit is provided. A control unit controls the operation of the pond filter unit, including the cleaning cycle of the filter. The pond filter unit further includes one or more plugs for connecting one or more auxiliary devices, such as a separate pump, one or more additional pond filter units, illumination means/lamps, air pumps, and/or feed automats. The control unit of the pond filter further controls the one or more auxiliary devices connected to the plugs, such as pumps, air pumps, automatic feeding devices based on input settings for each of the one or more auxiliary devices. The control unit further controls the cleaning cycle for cleaning of the filter in the vessel.

The present invention relates to a filtering device for a water treatment system comprising a biological treatment device adapted to provide a sludge from wastewater or filtrated wastewater, and/or the biological treatment device being fluidic connectable to or in fluidic connection with the filtering device for receiving filtrated wastewater from the filtering device and for delivering sludge to the filtering device. The filtering device is a cake filtration device comprising a fluid penetrable support structure and the support structure is provided as one or more tubular elements having a filtration cake provided on the inside of the fluid penetrable support structure. The filtering has device an inlet being connectable to receive liquid to be filtered so that the flux of liquid to be filtered is from the inside of the support structure, through the filtration cake and to the outside of the support structure thereby providing a filtrate, an outlet for outletting liquid from the interior of the tubular element, and a filtrate outlet for outletting filtrate from the filtering device. The filtration cake is being provided by deposition of solids from the sludge formed in the biological treatment device.

A process for treating wastewater including: feeding organic wastewater to a first aerobic tank and an anoxic tank; nitrifying and denitrifying the organic wastewater by bacteria supported on carriers in the first aerobic tank followed by discharging primary treated water; denitrifying the organic wastewater and the primary treated water by bacteria in an activated sludge in the anoxic tank followed by discharging secondary treated water; nitrifying the secondary treated water by bacteria in an activated sludge in the second aerobic tank followed by discharging tertiary treated water; and separating the sludge from the tertiary treated water in the solid-liquid separator followed by discharging final treated water while returning the sludge to the anoxic tank. According to this process, a load in a latter anoxic tank can be reduced, the anoxic tank can be downsized compared with the prior process and treated water with good water quality is stably provided.

The present invention relates to an apparatus for collecting and treating wastewater (1) based on biodegradation-recombination-biodegradation process, comprising: a shell (1.1), the space inside the shell is divided into a first chamber (1.2) and a second chamber (1.3) by a divider wall (1.4), wherein: the first chamber (1.2) contains biological medium suitable for heterotrophic microorganisms growth; the second chamber (1.3) contains biological medium suitable for autotrophic microorganisms and heterotrophic microorganisms growth. The present invention also relates to a system for collecting and treating wastewater combining rainwater drainage used for building, comprising: at least one wastewater treatment apparatus (1) above; a indoor pipe system for collecting and transfering wastewater, rainwater comprising a main vertical pipe (2), substantially horizontal branch pipes; and a outdoor pipe system for transfering wastewater combining rainwater drainage comprising a horizontal pipe (3) for connecting the indoor pipe system for collecting and transfering wastewater, rainwater to at least one wastewater treatment apparatus (1) above.

A wastewater treatment apparatus for remediation of a wastewater treatment system has a septic tank with a lower sludge layer and an upper liquid effluent layer. The apparatus is comprised of a brush that includes a brush arm having a first end, a second end, and bristles disposed on the brush arm between the first end and the second end. The brush is configured to be positioned within the liquid effluent layer in the septic tank in a vertical orientation such that the second end is disposed below the first end.