Evoqua BioMag – Ballasted biological process to allow WWTP to handle 3x flow and solids loadings, and to operate at longer sludge ages to achieve enhanced nutrient removal, without physically adding tankage to the plant.
Magnetite is a dense, non-abrasive, iron oxide mined locally in Missouri that can be recovered magnetically from the waste activated sludge and reused in the process to maintain an extremely dense, fast settling biomass. Results in a plant with small footprint, low capital, and low operational costs.
Easy to incorporate in any type of activated sludge treatment where biological process remains unchanged and BioMag equipment is located in the sidestream location (WAS stream) without impacting main liquid stream in the WWTP. Ability to with multi-stage treatment processes, to meet TN to ≤ 3.0 mg/L and TP to ≤ 0.2 mg/L without tertiary filters
The enhanced settling capabilities of the BioMag System has been proven at municipal and industrial facilities to deliver the following results:
BOD5 < 5.0 mg/L
TSS < 10 mg/L
NH3-N < 0.2 mg/L
TP < 0.2 mg/L without filters
TN < 3.0 mg/L without filters
SVI < 70 mL/gram
Clarifier SLR up to 100 lb/day-ft2
Clarifier SOR up to 2,500 gpd/ft2
MLSS up to 10,000 mg/L
MLVSS up to 8,000 mg/
Simplicity and reliability – Ballasting biological floc with magnetite dramatically increases secondary settling rates eliminating bottlenecks to process greater loads, flows or both.
Up to triple the capacity – Rapid and reliable settling enables a 2 – 3x increase in MLSS concentrations without the risk of upset, and an equivalent increase in treatment capacity — all within existing bioreactors and clarifiers.
Low-cost ENR – Increased capacity and superior solids removal enable existing activated sludge systems to free up reactor capacity for multi-stage treatment processes, thereby enabling the removal of TN to ≤ 3.0 mg/L and TP to ≤ 0.2 mg/L without tertiary filters.
Lower life-cycle costs – The BioMag™ System continuously recovers and reuses up to 95% of the injected magnetite offering a cost-effective, sustainable process.
Dedication and experience—Evoqua has 40 years of experience in biological processes, offering a holistic view when upgrading a plant, and maximizing synergies between BioMag and secondary treatment equipment.
A high rate clarification process utilizing internal recycling of settled solids and small amount of Magnetite (non-abrasive, high specific gravity) for floc formation to allow for less chemical use and footprints up to 20x smaller than conventional clarification. The CoMag System easily integrates with planned or existing facilities to allow the use of existing clarifiers of any size or type. Applications included treating wet weather flows, phosphorus removal and water re-use.
Enhances traditional floc by adding Magnetite ballast for reliable and rapid settling
Allows for increased treatment capacity
Allows for enhanced clarification
Meet tighter regulations in smaller footprint
Superior solids removal
Magnetite is readily available and has SG of 5.1 to increase density of flocs
Inexpensive and easy to recover
Enhanced primary treatment
Lagoon effluent to remove algae
The CoMag System competes effectively with all forms of media and membrane filtration and conventional clarification, and is proven effective for:
Tertiary treatment for polishing secondary effluent
Stormwater/CSO (combined sewer overflow)
SSO (sanitary sewer overflow)
Wet weather control
Reverse osmosis pretreatment
Heavy metals removal
Lagoon/reservoir for high solids, algae, and phosphorus
Fixed film application (right after fixed-film bioreactor)
Temporary treatment during or before plant upgrade projects
Video: Underwater Clarifier Footage of Magnetite-Ballasted Clarification
Easy to incorporate into any type of coagulation/flocculation process
Can use with any type of clarifier (circular, rectangular, squircle, inclined plate/tube settlers)
Only ballasting technology with an internal recycle from clarifier underflow to process tanks that reduces chemical consumption
Recycling promotes sludge densification and solids contact for better flocculation and sweeping effect in clarifiers to enhance capture of colloidal particles.
Magnetite is dense (2X more dense than silica sand), readily available (iron ore commodity), fully inert (NSF certified for DW applications), not abrasive (particle size is 40-50 microns) and magnetically retrievable (high recovery rates.)
Package plug and play offering for up to 300,000 gpd
Easy to pilot—Evoqua has two pilot units available and has conducted 35-40 pilots.
Rapid startup and quick process optimization for operation with frequent shut-down and re-starts
The enhanced settling capabilities of the CoMag System has been proven at municipal and industrial facilities to deliver the following results:
SOR up to 15 gpm/ft2 with conventional SOR up to 50 gpm/ft2 with plate settlers Turbidity < 1 NTU TP < 0.05 mg/L TSS < 2.0 mg/L Color 2 Pt-Co Units Fecal Coliform < 200 Col/100 mL Copper < 8 μg/L Aluminum < 80 μg/L Arsenic < 5 μg/L UV Transmittance > 75% Oil and Grease Removal
Superior contaminant removal – Efficiently reduces total suspended solids (TSS), total phosphorus (TP), turbidity, color, pathogens, and metals far below conventional treatment, without the need for filters
Low costs – High-rate, ballasted clarification allows for smaller reaction and solids separation tanks, minimal power consumption and moderate chemical use
Easy incorporation – CoMag is easy to incorporate into existing tankage
Lower OPEX – Continuously recovers and reuses up to 99+% of the injected magnetite, offering a sustainable process for lower OPEX
Process stability – Stability under shock loads – does not choke or plug; rapid startup and quick process optimization
Ultraviolet enabling – The high transmissivity of the CoMag System effluent reduces energy and operating costs of final purification
User friendly – Fully automated, requires minimum operator attention, easy to operate, core equipment has been used by industry for decades
Plug and play – Package plug and play offering for up to 300,000 gpd
Please describe the products or service needs in the short form below and our technical assistants will work closely with you to ensure you have all necessary parts shipped instantly. You can also call our experts at 800-366-7867.