Waste Water Purification

Abstract PDF: 

Tata Chemicals mines naturally occurring trona to produce soda ash. Soda ash, or sodium carbonate, is used in the manufacturing of glass, detergent chemicals, and other industrial products.

The refinement process circulates 4000 gallons per minute (gpm) of waste water. Waste water contains impurities such as sodium carbonate, sodium bicarbonate, sodium chloride, sodium sulfate, silica, and organic carbon. This water is deposited into large evaporation ponds. Tata Chemicals would like to reduce the rate at which these ponds are being filled and make their process more sustainable. We will focus on the opportunity, architecture, and some subsystem engineering stages of development.

A Solution Matrix was created to outline the feasibility of various solutions. This matrix displays which processes can achieve at 400 gpm of waste water reduction and the associated capital costs, energy cost, and environmental impact. This allows Tata Chemicals to select the process which best fits their needs and budget.

The recommended solution involves evaporating pond water using water launchers. The water launchers were selected as the best solution due to their capability of handling large amounts of waste water with minimal fouling. This method also proved to be significantly more cost effective than all other methods.

School Year (term): 
Tata Chemicals LTD.
Team Name: 
Jerry Bowman
Team Members: 
Sarah Best, Nicole Martin, David Ashworth, Kevin Stevens, Jared Wardell

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