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Why Pretreatment?
Pretreatment is any pollution control action performed by a customer discharging wastewater into a sewer. Why should commercial sewer users participate in pretreatment? Users are subject to pretreatment so as to 1) reduce the pollutant load at the municipal treatment plant, and 2) to protect the miles of sewer lines leading to the municipal treatment plant from problems such as sewer clogs.
Pretreatment programs came about as a preventative measure to keep industrial sewer users from releasing wastes into the sewer systems that could be harmful to the wastewater treatment plant as well as the environment. Pretreatment programs outline which wastes a sewer user may or may not discharge into the collection system.
A pretreatment ordinance gives pretreatment officials the authority to enforce the program.
Most pretreatment ordinances forbid the discharge of excessive amounts of fat, oil, and grease (FOG) into the sewer system. FOG discharge can damage collection system equipment and treatment plants, and also is a primary cause of sewer line blockages that result in sewer overflows. Most pretreatment programs require FOG producing industries (food preparation and food processing facilities) to install a pretreatment device like a grease trap or grease removal system. Some pretreatment authorities sample and test water exiting the pretreatment device to ensure that the establishment is properly caring for the unit.
Most pretreatment ordinances forbid the discharge of excessive amounts of fat, oil, and grease (FOG) into the sewer system. FOG discharge can damage collection system equipment and treatment plants, and also is a primary cause of sewer line blockages that result in sewer overflows. Most pretreatment programs require FOG producing industries (food preparation and food processing facilities) to install a pretreatment device like a grease trap or grease removal system. Some pretreatment authorities sample and test water exiting the pretreatment device to ensure that the establishment is properly caring for the unit.
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