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Sewage Treatment This is a joint project with Department of Civil Engineering. This project is developed to demonstrate the whole process of waste water treatment utilities. It converts the model developed by the Department of Civil Engineering into a VR environment in computer graphics, which will provide a vivid representation of waste water facilities, user-friendly walk through mode, and the real-time animation of water flow. Furthermore, the project also brings up new challenges to model various phenomena related to waste water, such as bubbles, sludge, which are vital to the overall effect.
The model consists of 3 major parts, which require different simulation methods.
Primary Clarifier
The primary clarifier consists of 4 separate rectangular tanks, each of which has a fixed water flow direction. The process in this part is mainly physical operation -- the removal of pollutants by physical forces, such as gravity. The water surface is quite placid.
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Below water, sludge accumulates as the sludge sweeper moves.Aeration Tank
Compared to the other 2 tanks, the water in this tank is quite violent, because of bubbles generated by the nozzles mounted on the bottom. The cleaning
process is driven by the bubbles in the water formed by the gas rushing out of the nozzles.
Secondary Clarifier
Unlike the rectangular shape of Primary Clarifier, the shape of the Secondary Clarifier is circular. By the similar token, unlike the uni -directional
behavior of water flow in the Primary Clarifier, the water flow in Secondary Clarifier is radial-flow. Our modeling the scheme is to divide the circular area
into sectors, (of course, the more the better), then, apply texture mapping method to each sector.
There are also sludge sweepers under water in the second Clarifier. They move in the circular direction and keep sweeping the sludge into the sludge pipe. |
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