Industrial Pretreatment Technology

Spartan Industrial Pretreatment Systems for BOD/COD Reduction

Spartan supplies industrial pretreatment systems which allows customers to meet their permit requirements and lower sewer surcharges. These systems combine ozone generators with other equipment to achieve high BOD/COD reductions. To learn more about our systems call 800-492-1252 (toll free), e-mail us at info@spartanwatertreatment. com or follow the link below to our product data sheet: on the GasTran System including information on BOD/COD reduction.

Background Information on Industrial Pretreatment

Industrial facilities that discharge their waste water to a publicly owned treatment works (POTW) must insure that their waste water meets certain standards. These rules are designed to insure that the POTW can meet its own discharge requirements for what ever body of water where the treated water will go. There is usually a list of materials that can not be discharged to the sewer system above certain levels for example cyanides and heavy metals. In addition, the POTW may also place limits on BOD, COD and TSS. These limits are designed to insure that the POTW has the capacity to treat the waste water that is being fed to the facility.

In most cases, even for permitted discharges, the POTW may levy surcharges for BOD, COD and TSS. These may be based on amounts above a minimum level of BOD, COD and TSS or on any BOD, COD or TSS discharged. In the case of BOD, charges range from $0.02/lb BOD to $0.60/lb BOD. Additional surcharges for COD and TSS are also levied in certain jurisdictions. Excursions outside of the permitted discharge for BOD, COD and TSS can result in fines in addition to the surcharges.

As an example, for a facility with waste water flows of 150 gpm with BOD of 500 mg/l over the minimum amount for a surcharge and a surcharge rate of $0.30/lb BOD, the monthly cost would be over $8,000. In these cases, pretreatment for BOD reduction using Spartan pretreatment systems can result in payback periods of 1-1.5 years.

Beyond the costs associated with sewer surcharges and fines, discharges to POTW are a matter of the public record. Certain groups track these discharges and publish them via the Internet. An example is the Right-to-Know Network (www., a service of OMB Watch, provides free access to numerous environmental databases. With the information available on Right-to-Know Network, you can identify specific factories and their environmental effects, and assess the people and communities affected. Many industrial clients would prefer to maintain a positive environmental image in their communities.