This application relates to a system of treating wastewater wherein an oxygen infusion system is used to supersaturate wastewater before aerobic biological processes, wherein oxygen is transferred to the wastewater free of oxygen bubbles and achieves a reduction in power demand for the aeration process of wastewater.

This application relates to a system of treating wastewater wherein an oxygen infusion system is used to supersaturate wastewater before aerobic biological processes, wherein oxygen is transferred to the wastewater free of oxygen bubbles and achieves a reduction in power demand for the aeration process of wastewater.

Provided is a method of treating feed water comprising the step of passing the feed water through a biostratum that comprises resin beads and living microorganisms to produce biostratum-treated water, wherein (a) the area-normalized free void volume in the biostratum is 0.018 m.sup.3/m.sup.2 or less; (b) the packing density in the biostratum is 0.68 to 0.96; (c) the ratio of the exterior surface area of the resin beads to the total free void volume in the biostratum is less than 2.0 to 50 m.sup.2/L; (d) the velocity of the water through the biostratum is 1 to 1,500 biostratum volumes per hour; and (e) the Reynolds number of the flow through the biostratum is 0.10 to 3.0.

The present disclosure provides an urban river channel direct purification device. The device includes a support wall panel arranged vertically, an upper tray and a lower tray arranged horizontally, an upper end of the support wall panel is connected with the upper tray, a lower end of the support wall panel is connected with the lower tray, the upper tray and the lower tray are respectively semi-circular, several filler biological walls are disposed between the upper tray and the lower tray, a top end of each filler biological wall is fixedly connected with the bottom of the upper tray, a bottom end of each filler biological wall is fixedly connected with the lower tray, and the filler biological wall is arranged along a radial direction of the upper tray/lower tray. The device can purify the water of the river channel through the adsorption material in the device.

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 discloses a filler component based on the Internet of Things (IoT). The filler component includes a main board, a first piece, a second piece, an accessory piece, a plurality of first through holes, and a plurality of second through holes. The main board includes a first curved surface and a second curved surface arranged opposite to each other and that are configured to form a double elliptical cross structure having a cavity. The first piece, the second piece, and the accessory piece are respectively fixed in the cavity of the main board. The first and second pieces are perpendicular to each other, and the accessory piece is parallel to the second piece and perpendicular to the first piece. The plurality of first through holes is arranged on the main board; the plurality of second through holes is arranged on the first piece and/or second piece.

A filter element (1) comprising a central tubular body/core (2) and a plurality of radially outwardly directed fins (3) forming the main structure of the element, the radially outwardly directed fins (3) projecting outwardly from said central tubular body/core (2) and whose radial length increases stepwise from each end of the central body or core to a maximum length located centrally of the length of the body or core (2), thereby effectively providing a generally double back-to-back conical appearance, a stiffening ring (8) arranged to encircle with a gap therebetween the body/core (2) at a mid-region thereof and whose plane is perpendicular to the axis of the body or core (2), the central tubular body/core (2) including one or more radially inwardly directed ribs (12).

The disclosure relates to bioreactors, for example for biological treatment and, more specifically to bioreactor insert apparatus including biofilms and related methods. The bioreactor insert apparatus provides a means for circulation of reaction medium within the bioreactor, a biofilm support, and biological treatment of an inlet feed to the reactor/insert apparatus. The bioreactor insert apparatus has a high relative surface area for biofilm attachment and is capable of generating complex flow patterns and increasing treatment efficiency/biological conversion activity in a biologically-active reactor. The high surface area structure incorporates multiple biofilm support structures such as meshes at inlet and outlet portions of the structure. The biofilm support structures and biofilms thereon can increase overall reaction rate of the bioreactor and/or perform some solid/liquid separation in the treatment of the wastewater or other influent.

Provided is a method of treating feed water comprising the step of passing the feed water through a biostratum that comprises resin beads and living microorganisms to produce biostratum-treated water, wherein (a) the area-normalized free void volume in the biostratum is 0.018 m.sup.3/m.sup.2 or less; (b) the packing density in the biostratum is 0.68 to 0.96; (c) the ratio of the exterior surface area of the resin beads to the total free void volume in the biostratum is less than 2.0 to 50 m.sup.2/L; (d) the velocity of the water through the biostratum is 1 to 1,500 biostratum volumes per hour; and (e) the Reynolds number of the flow through the biostratum is 0.10 to 3.0.

A wastewater treatment apparatus has a tank with an access opening, 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 polymeric material and has openings framed by the polymeric material. The diffuser is adapted to aerate liquid in the interior of the tank. The media pod has a tubular structure extending vertically in the interior of the tank and positioned above the bottom of the tank. Floats are attached to the top of the media pod so as to suspend the media pod in the liquid in the tank.