cetcoenergyservices.com Challenge The metal fabricating plant generates between 400 and 800 gallons of vibratory water per week, containing soap and suspended solids. The plant was unable to directly discharge its process water back into the environment since it did not meet government regulations. The problem was that the biochemical oxygen demand in process water was more than 10,000 parts per million (PPM), when it needed to be below 500 P

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