A water treatment tank includes: a tank body including a bottom surface extending in a horizontal direction; and an overflow wall installed in the tank body to partition an inside space of the tank body into a seawater intake upstream tank into which treatment water having absorbed sulfur from an exhaust gas is introduced and a seawater intake downstream tank into which treatment water overflowing the seawater intake upstream tank is introduced to flow therein. The treatment water flowing into the seawater intake downstream tank is divided by the overflow wall in the width direction of the overflow wall so as to form a waterfall region and a non-waterfall region.

A regulating tank of a wastewater treatment system includes a tank member having an annular wall to receive wastewater, a first overflow weir connected to an interior side of the annular wall of the tank member, and a first pump device having a first pump and a first return pipe. The first pump of the first pump device pumps wastewater in the tank member to the first overflow weir through the first return pipe, and then the wastewater flows back to the tank member from the first overflow weir to disturb the wastewater in the tank member.

A regulating tank of a wastewater treatment system includes a tank member having an annular wall to receive wastewater, a first overflow weir connected to an interior side of the annular wall of the tank member, and a first pump device having a first pump and a first return pipe. The first pump of the first pump device pumps wastewater in the tank member to the first overflow weir through the first return pipe, and then the wastewater flows back to the tank member from the first overflow weir to disturb the wastewater in the tank member.

A regulating tank includes a tank member having an annular wall to receive wastewater. A circular pipe is connected to the tank member. A draining device drains the wastewater in the tank member to the circular pipe. A plurality of nozzles connected to the circular pipe to eject the wastewater in the circular pipe back to the tank member. When the wastewater is ejected by the nozzles, a temperature of the wastewater is reduced, and dissolved oxygen of the wastewater is increased.

A negative pressure aeration system, created by atmospheric siphon pressure above the waterline and mechanical pump suction below the waterline, which impedes the growth of organic matter. A waterfall in vacuum effect is created within a processing unit that aerates the raw water as it falls through the air chamber of the processing unit housing, which assists in the suppression of organic growth by reducing the contact surface area within the processing unit. A chemical tank allows an anti-fouling chemical to be added to the entire system and a power supply allows flexible electrodes driven by a vacuum to create a further anti-fouling benefit throughout the components of the system.

An air infiltration system for a hydroelectric plant includes a spillway gate and a linearized cone valve coupled to the spillway gate, the linearized cone valve having a pivotable plate assembly. The spillway gate may be a tainter or Stoney gate and the pivotable plate assembly may have a deflection plate. A method of infiltrating air in water released from an impoundment may include: lifting a spillway gate from a resting position proximate a bottom of a spillway; and pivoting a deflection plate coupled to the gate proximate the bottom of the spillway; wherein water flows through an opening disposed between the deflection plate and the gate and is sprayed into an atmosphere to be oxygenated.

A machine and process for providing a gas liquid mixture are described. The process can include providing a pressurized fluid stream; and subjecting the fluid stream to a series of alternating flow regions that include a plurality of laminar flow regions and turbulent flow regions. The machine can include a flow path from a pressure vessel to an ejection point, where the flow path includes a plurality of alternating flow characteristic regions.

A water restoration system is presented. The system includes a filtration chamber disposed proximate to or within a water basin, such as a watershed basin, to continuously filter contaminants from the water basin without relying on a rain event. The filtration chamber includes a reaction chamber and an aeration and mixing chamber, such that the water removed from the basin interacts with filtration media within the reaction chamber, and such that the filtration media mixes with the water (while the water is aerated) within the aeration and mixing chamber. As a result, water from the basin is continuously filtered through the water restoration system to reduce the concentration of contaminants, such as phosphorus and nitrogen, from the water basin.

A water restoration system is presented. The system includes a filtration chamber disposed proximate to or within a water basin, such as a watershed basin, to continuously filter contaminants from the water basin without relying on a rain event. The filtration chamber includes a reaction chamber and an aeration and mixing chamber, such that the water removed from the basin interacts with filtration media within the reaction chamber, and such that the filtration media mixes with the water (while the water is aerated) within the aeration and mixing chamber. As a result, water from the basin is continuously filtered through the water restoration system to reduce the concentration of contaminants, such as phosphorus and nitrogen, from the water basin.

A multi-path aquarium filtration system having multiple chambers adapted to receive different types of treatment systems, and having a bypass gate assembly whereby the flow volume between certain chambers is adjustable.