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Advanced Filtration Dynamic Membrane Technology

Advanced Filtration Dynamic Membrane Technology

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Advanced Filtration Dynamic Membrane Technology

CORNCOB advanced filtration dynamic membrane technology can convert nearly any wastewater stream into clean reusable water in a small footprint, Decentralized Wastewater Treatment System (DEWATS). Compared to innovative DEWATS biological processes, such as FMBR, CORNCOB is ideally suited for wastewater streams that are less suitable for biological treatment such as landfill leachate.

Case Study: CORNCOB Landfill Leachate Solution

A medium size municipal landfill in Monroe County, Wisconsin faced the threat of shutdown if it could not solve its growing leachate problem. It’s average daily leachate production was 10,000 gallons per day which was hauled and disposed of offsite 365 days per year.

The Corncob solution provided an onsite landfill leachate treatment & recovery system that recovered clean NPDES permittable water and eliminated the need for offsite hauling and disposal.

Gail Frie, Solid Waste Manager, Monroe County Landfill, Wisconsin

Met/exceeded all landfill requirements

  • Flexible onsite solution
  • Environmentally safe
  • Cost effective
  • Does not disrupt current operation
  • Expandable

Benefits

  • $180,000+ in annual savings
  • 30% less capital, 50% less energy, 80% smaller footprint as compared to alternative solutions
  • 67% of leachate is converted into clean, NPDES permittable water
  • Ensured a resilient & sustainable operation

Example applications include but are not limited to:

  • Agricultural processes
  • Breweries & wineries
  • Campgrounds
  • Dairy processing
  • Fiber Processing
  • Food cleaning processes
  • Frack Flowback
  • Industrial Laundry
  • Landfill Leachate
  • Meat & poultry processes
  • Municipal Sewage
  • Shrimp Farms
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WWTP saves $35m with Low DO, 1-step nitrification/de-nitrification

WWTP saves $35m with Low DO, 1-step nitrification/de-nitrification

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CASE STUDY

Wastewater municipality saves $35 million with one-step nitrification/de-nitrification

The Problem

Trinity River Authority, TX (162MGD) needed an optimal nutrient removal strategy for a planned significant expansion in capacity. Assuming a standard two-step nitrification/de-nitrification process, the budgeted capital cost was $50 million.

The Solution

Under the guidance of Leon Downing, PhD, PE, a Consulting Engineer and Northwestern University, McCormick School of Engineering, a one-step nitrification/de-nitrification process was validated over five years by gradually reducing dissolved oxygen (DO) levels to a super low setpoint. Microbe Detectives next generation DNA analysis and other test methods were used to measure changes in the ecology and validate results.

Hypothesis: As we adopt lower aeration operation, ecology will shift and nutrient removal capacity will not be be decreased.

Action: Gradually progressed from 2.0 mg/l to 0.2 mg/l dissolved oxygen (DO) operating conditions over 5 years in 4 aeration basins.

Result: Commamox (CMX) bacteria was validated to emerge and become the primary “workhorse” delivering an improvement in nutrient removal at a super low DO setpoint with a one-step nitrification/de-nitrification process.

Benefits

Basin Design Savings: $35 million

Pre-study $50 million estimated
Post-study $15 million actual cost

Operating Savings: $490,000/year

$350,000/year aeration savings
$140,000/year chlorine savings

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Wastewater municipality saves $6m by reducing lagoon biosolids

Wastewater municipality saves $6m by reducing lagoon biosolids

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A California municipal wastewater treatment facility (WWTF) with 4 lagoons primarily processed municipal waste as well as several types of commercial/ industrial waste, including waste from a tomato processing plant and a dairy processing plant, for a total of 2.8 million gallons a day.

CASE STUDY

Wastewater municipality saves $6 million by reducing lagoon biosolids by 68 million gallons in one year

The Problem

The influent to the wastewater system was primarily municipal, with some commercial and industrial sources (25%) for a total of 2.8 million gallons a day. Each primary lagoon – Ponds 1A and 1B – was estimated to hold 25 million gallons of water.

A sludge judge was performed on the primary lagoons as a baseline. The overall lagoon depth averaged 10 feet with 2 feet of freeboard. It was determined that the sludge blanket was greater than 5 feet in several locations in both primary lagoons, Pond 1A and Pond 1B. The high average sludge-blanket depth significantly reduced the primary lagoon’s overall capacity.

The Solution

A biostimulant was selected to support the reduction of the organic solids in the system. The liquid biostimulant was added via peristaltic pump to the lagoon inlets. Initially the dose applied was 7 ppm and was eventually decreased 10 months later to 5 ppm. A maintenance dose of 3 ppm was established 2 months later.

Results

Measurements used to calculate sludge removal are shown in Table 1 below. These values correlated to about 9,375,000 gallons of sludge removal or about 2,800 truckloads. An additional 57.4 MG/Year of solids were treated in addition to what was removed resulting in a total sludge removal of 66.8 million gallons of sludge, or 17,800 dry tons. At a cost of $340/dry ton for hauling offsite and disposal, the estimated savings was $6,066,000.

Table 1 – Sludge Removal Calculations

Benefits

• $6 million cost avoidance in dredging, hauling, disposal costs.
• 45% reduction of sludge depth
• Equivalent of 17,810 dry tons of sludge removed

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