1. A stream containing 4wt% chromium (Cr), is contained in the wastewater from an absorber. The wastewater stream is fed to a treatment unit that removes 95% of the chromium in the feed and recycles it to the plant. The residual liquid stream leaving the treatment unit is sent to a waste lagoon. The treatment unit has a maximum capacity of 4500 kg wastewater/hr. If wastewater leaves the finishing plant at a rate higher than the capacity of the treatment unit, the excess (anything over 4500kg/hr) bypasses the unit and combines with the residual liquid leaving the unit, and the combined stream goes to the lagoon.
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