Abstract: A water treatment apparatus includes a first fluid channel that can circulate contaminated water in the water body, a first inlet that draws the contaminated water into the first fluid channel, and an outlet that allows the contaminated water to exit the first fluid channel. A second fluid channel installed with a filter therein can filter contaminated water in the water body to produce a filtered water flow. A fluid transport apparatus can draw the contaminated water through the first fluid channel and the second fluid channel. A flow control system allows water to flow in a predetermined angular range while blocking at least a portion of the remaining angular range in at least one of the first inlet and the outlet to achieve mixing coverage with different aspect ratio. The position of the outlet can be adjusted to optimize the flow rate and pattern.

Abstract: A water treatment apparatus includes a float configured to float on the surface of a water body, a first fluid channel coupled to the float and configured to circulate contaminated water in the water body, and a second fluid channel coupled to the float and configured to filter contaminated water in the water body. A fluid transport apparatus can draw the contaminated water through the first fluid channel at a first flow rate and through the second fluid channel at a second flow rate.