In late 1989, the Milwaukee Metropolitan Sewage District asked the author to present a three-day equipment maintenance course at one of its large effluent treatment facilities.
In late 1989, the Milwaukee Metropolitan Sewage District asked the author to present a three-day equipment maintenance course at one of its large effluent treatment facilities. Situated on Jones Island, the treatment plant makes a pelletized fertilizer byproduct, which we choose to call “Millfort.” The fertilizer is still sold today by several major-brand hardware stores for about $28 per 32-lb bag.
Among the raw material that flows into a sewage treatment plant is industrial waste, including fluids from a world-scale beer brewery. Contaminated water byproduct greatly exceeds the final beverages produced by breweries. However, this byproduct is a high-value, nitrogen-rich, slow-release ferti
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