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.

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

A wastewater treatment apparatus has a tank having an access opening therein, at least one fixed film media pod positioned in the interior of the tank, a diffuser positioned in the interior of the tank, and an air pump connected to the diffuser. The fixed film media pod is formed of a mesh material and has openings framed by the mesh material. At least one weight is affixed to the fixed film media pod adjacent to a bottom thereof so as to maintain a vertical orientation of the fixed film media pod in the tank. The diffuser can be affixed to the fixed film media pod so as to aerate liquid in the interior of the tank.

The disclosure herein relates to a helical bed biofilm reactor for wastewater treatment, and belongs to the fields of environment engineering and chemical engineering. The helical bed biofilm reactor comprises a reaction vessel, a draft tube, helical screen meshes, carriers, a carrier passage, a gas distributor, a gas inlet, a gas outlet, a water inlet, a water outlet and a sludge outlet. By improving the arrangement structure of the carriers and the structure of the helical passage, the helical bed biofilm reactor improves the oxygen transfer rate, the oxygen transfer efficiency and the biological reaction efficiency of a biological treatment process of wastewater, and helps to control the thickness of the biofilm and reduce energy consumption in wastewater treatment.

A water treatment system comprising a first reactor and a second reactor arranged to be placed in series in a body of water, the first and/or second reactor comprising at least one cell for housing biomedia. A mid-settling zone is provided between the first and second reactors for separating solids in the water. A method of treating water, the method comprising passing water to be treated through a first reactor and then a second reactor arranged in series in a body of water, the first and/or second reactors comprising at least one cell for housing biomedia, wherein the water is passed through a mid-settling zone between the first and second reactors before passing through the second reactor.

The present disclosure relates to a filter apparatus (1) for mechanically filtering a liquid (W). The filter apparatus (1) includes a filter chamber (5) for containing a plurality of filter elements (7) that form a filter pack (29) for filtering the liquid. The filter chamber (5) has a liquid inlet (12) and a liquid outlet (14). The filter apparatus (1) includes means for introducing air into the filter chamber (5) through one or more air inlets (25) to agitate the filter elements (7). The filter chamber (5) is substantially sealed and the air introducing means (22) may be configured to draw air into the filter chamber (5) as liquid is drained from said filter chamber (5). In certain embodiments, the filter chamber (5) may have a substantially constant profile or a substantially continuously tapered profile along its longitudinal axis (X-X). The present disclosure also relates to methods of filtering a liquid (W).

A biocarrier, including: a base plate, having a first face and a second face opposite to each other, the base plate further having two lateral sides, each of the lateral sides being located between the first face and the second face, a width direction being defined by a direction along which the two lateral side are aligned; a plurality of fin plates, the fin plates being spacedly arranged on the first face and the second face along the width direction, a gap being formed between any two adjacent ones of the fin plates; two protection plates, arranged at the two lateral sides of the base plate respectively, a face of each of the protection plates opposite to the base plate having a convex arc face, a width of each of the protection plates parallel to the base plate being larger than each of the gaps.

A fiber bundle for bearing microorganisms. Fiber filaments are wound into a ring shape or have two ends bound into a bundle, or wires, ropes or bands made of staple fibers or fiber filaments are wound into a ring shape or have two ends bound into a bundle or are woven into a strip. A filter layer formed by fiber bundles for bearing microorganisms is characterized in large specific surface area and high porosity, and the unit capacity of bearing the microorganisms may be several times that of a granular filter material.

A spiral wound filtration assembly including: i) a pressure vessel comprising a feed port, concentrate port and permeate port; ii) at least one spiral wound membrane module comprising at least one membrane envelop wound around a permeate tube which forms a permeate pathway to the permeate port; and iii) a bioreactor having a cylindrical outer periphery extending along an axis (Y) from a first end to a second end, an inlet located near the first end, and an outlet located near the second end;
wherein the spiral wound membrane module and bioreactor are serially arranged within the pressure vessel.

A fin assembly apparatus which comprising a product dispensing stand for supporting a fabric product, a movable fin insertion apparatus for overlapping the fabric product and forming a fin opening, a movable fin sandwiching apparatus for forming a fin member, a pair of spaced apart guide tracks for supporting the movable fin sandwiching apparatus and the movable fin insertion apparatus, and a control panel for controlling operation of the fin assembly apparatus during manufacture of the fin member.