Oxy Petrochemicals, Inc.
In 1991, a copper discharge limitation was added to the facility's wastewater permit. An initial analysis of the wastewater showed the levels of copper present were much higher than permitted. OxyChem determined that the plant water supplier (City of Corpus Christi) was dosing the water with copper sulfate for algae control
OxyChem and the City of Corpus Christi Water Department worked together over a period of more than eight months during
The substitution source reduced copper from not only OxyChem's water but other industrial customers of the City of Corpus Christi. Total copper releases to the environment were reduced.
Details of Reductions
Additional Information :
OxyChem avoided the expense of designing, installing and operating a water pretreatment facility for its process water. In addition, the water for copper removal would have created additional solid waste.