Linda County Wastewater Treatment Plant Tour (FEE)
Wednesday, April 18
1:45 PM - 5:30 PM
SWRCB Wastewater: 0.2 CEU
CWEA: 2.4 Contact Hours
$35 (Early Bird and Saver) / $42 (Full Rate after 3-30-18)
Pick Up Location: The tour bus will be picking up and dropping off on J street, out in front of Hall C. J street is also between 13th and 14th street, in front of the Convention Center.
1:45PM-2:45PM - Travel to tour site (45-60 min, depending on traffic)
2:45PM-4:30PM - Linda County Wastewater Treatment Plant (WWTP) (75-120 minutes)
4:30PM-5:30PM - Travel back to convention center (45-60 min, depending on traffic)
Please note: an additional registration fee is required to attend this tour.
Primary Filtration is an emerging advanced primary treatment technology that can be used to replace primary clarification at wastewater treatment plants (WWTPs). Primary filtration can produce significant energy and capital cost savings via carbon diversion due to higher treatment efficiencies when compared to conventional primary clarification. Based on several pilot and demonstration projects, primary filtration was found to increase the primary treatment removal efficiency by an additional 30 to 50% over conventional primary clarification. Main advantages of the primary filtration process are:
1. Decreased electrical energy of 25% to 30% required for aeration in secondary treatment because of reduced organic loading;
2. Increased gas energy production of between 20% and 30% in the anaerobic digestion process resulting from the high organic energy content of the volatile suspended solids removed by the filter;
3. Expanded plant capacity of about 30% by reducing the organic loading upstream of the secondary process;
4. Reduction of footprint required for primary treatment of approximately 75% compared with primary clarifiers for conventional treatment; and
5. Altered particle size characteristics of the wastewater to be treated biologically (enhancing the effectiveness of secondary treatment).
Construction of the first full-scale primary filtration system was completed in June 2017 at Linda County Water District (Linda) WWTP (Marysville, California). The Linda WWTP was upgraded in 2010 to meet the stringent effluent quality requirements for BOD, ammonia, nitrate, TSS, and turbidity. The WWTP has an average treatment capacity of 5 million gallons per day (MGD) and currently operates at an average daily flow of approximately1.3 MGD. The primary filtration system used at Linda WWTP is a cloth depth filter to treat average and peak flow capacities of 1.5 and 3.5 MGDd, respectively. The primary filter TSS removal efficiency at Linda WWTP is between 80 and 85 percent, which is approximately 50 percent higher compared to primary clarifier system.
Helen Hu, P.E.
Sr. Civil Engineer | O&M Business Efficiencies Manager
Sacramento Regional County Sanitation District