Modernization of the SCWW facility now includes Ozone, UV and Electrocoagulation technology.

 

Santa Clara Waste Water using Electrocoagulation

Serving the Waste Water Needs of Industry

Santa Clara Waste Water (SCWW) is a private company processing and treating non-hazardous waste water streams from various different industries located in Ventura County and throughout California. SWCC’s main clientele are septic and portable toilet pumpers, cooling tower brine blowdown water and landfill leachate. SCWW facility has been treating waste water at their location for over 40 years.  The pre-treated water is discharged into the sewer mains and pumped to the Oxnard Municipal Wastewater Treatment Plant for final treatment before discharge into the Pacific Ocean.

“We allow industries to focus on what they do best and outsource their waste water treatment needs to the experts,” says Chuck Mundy, General Manager. “We have been in the business of cleaning industrial wastewater for almost 40 years and have some of the most advanced technology to meet the challenges of a stricter regulatory environment.”

Meeting the Challenge
Industrial wastewater streams are different from source to source. Stricter discharge regulations throughout California have driven the demand for better and more effective wastewater treatment. Over the years SCWW have expanded the capacity of their facility handle to handle up to 100 gpm or 140,000 gallons per day. Not only has capacity increased but modernization of the SCWW facility now includes Ozone, UV and Electrocoagulation technology. “We now have a full spectrum of technologies that eliminates a long list of contaminants”, noted Mundy, “this gives us greater reliability but also flexibility to meet the challenges of a changing regulatory mandate”.

Reducing Operational Costs
Removal of heavy metals from industrial and municipal wastewater is often an operationally intensive process. Chemical precipitation in wastewater treatment involves the addition of chemicals to alter the physical state of dissolved and suspended solids allowing them to be physically removed from water through filtration.

The chemicals used in wastewater treatment include Alum, Ferric chloride, Ferric sulfate, Ferrous sulfate, and Lime. The inherent disadvantage associated with most chemical processes is that they are additive processes. SCWW was spending up to $100,000 per month on chemical-additives for heavy metal remediation.  By installing an Electrocoagulation (EC) system, SCWW was able to reduce their monthly chemical costs to $10,000 month and at the same time improve the wastewater treatment process to surpass discharge requirements to the local POTW.  

In addition, the EC system reduces the total sludge generated by 90%. Sludge removal costs can be significant. SCWW was able to reduce tipping and hauling costs by 90%. “The EC system was delivered on a skid ready to be installed”, says Mundy, “A technician from the factory arrived the same day, helped with the installation, gave the operators the necessary training and we were ready to go. The EC unit is very easy to install, operate and maintain.”

More effective Treatment

A 50 gpm Electrocoagulation unit treating septic, landfill leachate and portable toilet wastewater replaces chemical treatment and saves a liquid waste treatment facility one million dollars per year

The electrocoagulation technology efficiently removes a wide range of contaminants with a single system. Traditional water treatment would require a different type of equipment to remove bacteria, silt, pesticides, heavy metals, and oil from water. The broad-spectrum effect allows one system to remove multiple contaminates saving equipment cost, space, time and minimizes potential points in failure. In addition to the EC system, SCWW has installed downstream an ozone generator and injection system as a secondary anti-microbial treatment eliminating any remaining pathogens such as viruses, bacteria, E-coli and cryptosporidium. The result is more effective non-chemical treatment and better quality water that can be discharged.

Reusable Water
Chemical treatment is not only expensive, but, more importantly, the net increase in the dissolved constituents in the wastewater render it impractical or impossible to reuse. Electrocoagulation precipitates the dissolved and suspended solids. The total dissolved solids in the liquid usually decrease by 27 to 60 percent. This enables the water to be reused in many applications, such as water reuse in steam cleaning operations. Reuse of the water provides a major advantage because this eliminates all EPA and POTW discharge concerns, to say nothing of the replacement costs of the water itself. In the case of SCWW, the facility acts as an up stream pre-treatment for the local municipal wastewater treatment plant.

Private and Public Partnership
Downstream from SCWW is the Oxnard Wastewater Treatment Plant (OWTP). It is a secondary treatment plant with a design capacity of 31.7 MGD. Treated water is discharged directly into the Pacific Ocean as well as injected into groundwater wells to prevent salt water intrusion into the agricultural rich Oxnard Plain. As the only ocean discharger in Ventura County, OWTP has to meet strict state and federal EPA discharge levels. SCWW has specialized on the treatment of difficult industrial wastewater stream that could otherwise not be treated by conventional secondary treatment technology. “We provide a service that not only benefits our industrial customers directly but we also remove a burden for the City of Oxnard by effectively pre-treating wastewater so they can meet their discharge levels” explains Mundy. “We are reducing bacteria from the sewage waste water, oily waste waters from steam cleaning operations, refineries, and food processors, dissolved silica, clays and other suspended materials and heavy metals in water such as arsenic, cadmium, chromium, lead, nickel, and zinc”.

See Electrocoagulation for more information on this technology.

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