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.

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.

A safety access system for use on floats, typically in the field of water and wastewater treatment, the system including rotatable and removable handrails and sockets attached to the float to receive the handrails.

Systems and methods for watercraft and marine propulsions systems having marine environment enhancement capabilities are disclosed.

Systems and methods for watercraft and marine propulsions systems having marine environment enhancement capabilities are disclosed.

Systems and methods to control colonization, amplification and/or growth of waterborne aerobic heterotrophic bacteria within potable water plumbing of a premises are provided, the premises having potable water plumbing having at least one point of use within the premises, the potable water plumbing being adapted to receive a potable water supply from a municipal water source. The systems and methods to control colonization, amplification, and/or growth of waterborne aerobic heterotrophic bacteria within cooling towers and evaporative condensers, recirculates system water through a deoxygenation device to reduce dissolved oxygen levels and prevent bacterial respiration within the heat exchanger and pressurized lines.

Systems and methods to control colonization, amplification and/or growth of waterborne aerobic heterotrophic bacteria within potable water plumbing of a premises are provided, the premises having potable water plumbing having at least one point of use within the premises, the potable water plumbing being adapted to receive a potable water supply from a municipal water source. The systems and methods to control colonization, amplification, and/or growth of waterborne aerobic heterotrophic bacteria within cooling towers and evaporative condensers, recirculates system water through a deoxygenation device to reduce dissolved oxygen levels and prevent bacterial respiration within the heat exchanger and pressurized lines.

An oil-containing wastewater treatment method and equipment with creating and saving energy efficiency are disclosed. The method comprises the following steps of: providing the oil wastewater having a first COD value; performing the acidized demulsification treatment to the oil wastewater to separate the oil wastewater into upper layer solution and lower layer solution; performing the first coagulation sedimentation treatment to the lower layer solution to form the precipitate and upper clear solution; and performing the contact aeration treatment step to the upper clear solution by using the biological agent. Therefore, the inflow solution having a second COD value that meets the inflow standard can be obtained.

An oil-containing wastewater treatment method and equipment with creating and saving energy efficiency are disclosed. The method comprises the following steps of: providing the oil wastewater having a first COD value; performing the acidized demulsification treatment to the oil wastewater to separate the oil wastewater into upper layer solution and lower layer solution; performing the first coagulation sedimentation treatment to the lower layer solution to form the precipitate and upper clear solution; and performing the contact aeration treatment step to the upper clear solution by using the biological agent. Therefore, the inflow solution having a second COD value that meets the inflow standard can be obtained.

A device for infusing gas into a liquid includes a housing and a tube having a width that is smaller than that of the housing and which is positioned within the housing such that the longitudinal axis of the tube is approximately parallel to that of the housing. The device further includes potting compound interposed between an outside surface of the tube and an inside surface of the housing at both ends of the tube. Microporous hollow fibers extend from the potting compound at the first end of the tube and through the potting compound at the second end of the tube. Openings in the device allow for the introduction of gas and liquid into the device. Gas enters the device and into the microporous hollow fibers. Liquid enters the device and is exposed to the outer surfaces of the microporous hollow fibers. Gas passes from the microporous hollow fibers to the liquid and is dissolved into the liquid. Liquid infused with gas exits the device.