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Depending on how fast the winds from a waterspout are whipping, anything that is within about 90 cm (1 yard) of the surface of the water, including fish of different sizes, frogs, and even turtles, can be lifted into the air. [34] A waterspout can sometimes suck small animals such as fish out of the water and all the way up into the cloud.
Many water treatment processes use a variety of forms of aeration to support biological oxidative processes. A typical example is activated sludge which can use fine or coarse bubble aeration or mechanical aeration cones which draw up mixed liquor from the base of a treatment tank and eject it through the air where oxygen is entrained in the ...
The treatment of waste water issuing from raceway farms is a major concern. Fish fecal matter and uneaten feed are typically the major elements of solid waste produced in raceway aquaculture farms. These can adversely impact the environment in the receiving water body.
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After treatment, the effluent may be returned to surface water or reused as irrigation water (or reclaimed water) if the effluent meets the required effluent standards (e.g. sufficiently low levels of pathogens). Waste stabilization ponds involve natural treatment processes which take time because removal rates are slow.
The National Weather Service says a “waterspout is a rotating column of cloud-filled wind that descends from a cumulus cloud over a body of water. They can last from 2 to 20 minutes and move at ...
A waterspout churns in the distance while lightning strikes near Vancouver International Airport on Saturday, November 6, 2021. (Image credit: Sean David via Storyful)
Water body stagnation (stagnation in swamp, lake, lagoon, river, etc.) Surface and ground water stagnation; Trapped water stagnation. The water may be trapped in human artifacts (discarded cans, plant pots, tires, dug-outs, roofs, etc.), as well as in natural containers, such as hollow tree trunks, leaf sheaths, etc.