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 transferring wastewater, rainwater comprising a main vertical pipe (2), substantially horizontal branch pipes; and a outdoor pipe system for transferring wastewater combining rainwater drainage comprising a horizontal pipe (3) for connecting the indoor pipe system for collecting and transferring wastewater, rainwater to at least one wastewater treatment apparatus (1) above.

A solar-powered aeration device for sludge turnover and planting includes a grow bed fixed on a floating body and floats on water. A bottom of the floating body is fixedly connected with an inner pipe; an outer pipe is sleeved outside the inner pipe. The outer pipe is nested in an air chamber; a bottom of the air chamber communicates and is fixedly connected with a water inlet pipe; the water inlet pipe laterally communicates with a suction tube. An aeration ring is fixedly arranged at a bottom of the outer pipe, and the aeration tube has an air outlet pipe in communication with the outside. A movable foot is rotationally provided at a tail end of the suction tube, and the movable foot adapts to surface fluctuations to swing in a range limited by an angle limiter.

The invention in one form is directed to an airlift pump that is optimized to transfer large volumes of water using very low pumping head. Specifically, the airlift pump is comprised of a pump inlet and outlet which are both located below pond's surface. The pumping force driving the water flow is supplied by the weight of the volume of water displaced by pressurized air into a vertical pipe, and this energy is dissipated by the friction of the rising bubbles pipe entrance head, plus the frictional effects of the inner pipe wall and the energy contained in the water's exit velocity.

The invention in one form is directed to an airlift pump that is optimized to transfer large volumes of water using very low pumping head. Specifically, the airlift pump is comprised of a pump inlet and outlet which are both located below pond's surface. The pumping force driving the water flow is supplied by the weight of the volume of water displaced by pressurized air into a vertical pipe, and this energy is dissipated by the friction of the rising bubbles pipe entrance head, plus the frictional effects of the inner pipe wall and the energy contained in the water's exit velocity.

A solar-powered aeration device for sludge turnover and planting includes a grow bed fixed on a floating body and floats on water. A bottom of the floating body is fixedly connected with an inner pipe; an outer pipe is sleeved outside the inner pipe. The outer pipe is nested in an air chamber; a bottom of the air chamber communicates and is fixedly connected with a water inlet pipe; the water inlet pipe laterally communicates with a suction tube. An aeration ring is fixedly arranged at a bottom of the outer pipe, and the aeration tube has an air outlet pipe in communication with the outside. A movable foot is rotationally provided at a tail end of the suction tube, and the movable foot adapts to surface fluctuations to swing in a range limited by an angle limiter.

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 submersible aerator apparatus is disclosed. The apparatus uses injected air to create both aeration and mixing of a liquid. The apparatus is submersible and may be lowered into a container holding a liquid with suspended and coagulated solids, such as fats, oil, and grease (FOG). Air supplied to the apparatus is injected into the liquid through a hose, which results in an upward flow of large air bubbles and entrained liquid. The upwardly moving large air bubbles are cleaved (i.e., broken apart) by a series of baffle plates that are generally perpendicular to the direction of flow of the air bubbles. This action mixes and aerates the liquid.

An air grid for supplying air under pressure. The air grid may be used as an air scour system for a filter for removing at least some impurities (e.g., foreign matter of any nature including a solid, a liquid or a gas) from water or wastewater or as an aerator for aerating wastewater in an aeration tank or basin. The air grid includes an adapter for permitting in field adjustment of one or more components (e.g., drop pipe) of the air grid. Preferably, the adapter houses a portion of an air supply header and a portion of a drop pipe such that the air supply header is disposed above the drop pipe. The adapter may include a detachable sealing assembly. A tool may be provided for inserting and/or removing one or more components of the air grid from the operation environment.

An air grid for supplying air under pressure. The air grid may be used as an air scour system for a filter for removing at least some impurities (e.g., foreign matter of any nature including a solid, a liquid or a gas) from water or wastewater or as an aerator for aerating wastewater in an aeration tank or basin. The air grid includes an adapter for permitting in field adjustment of one or more components (e.g., drop pipe) of the air grid. Preferably, the adapter houses a portion of an air supply header and a portion of a drop pipe such that the air supply header is disposed above the drop pipe. The adapter may include a detachable sealing assembly. A tool may be provided for inserting and/or removing one or more components of the air grid from the operation environment.