The best alternative to activated sludge package plants?
Michael Clayton
Upgrading Ageing Activated Sludge Package Plants: Why Orenco AdvanTex® is the Ideal Modern Solution
Across North America, thousands of small communities, commercial facilities, and mobile home parks rely on traditional activated sludge package plants designed and installed decades ago. While these systems were once standard for decentralized wastewater treatment, ageing units are increasingly becoming operational nightmares.
Corroding steel tanks, skyrocketing electricity bills, constant mechanical upkeep, and frequent sludge hauling costs leave utility managers and property owners searching for a modern replacement.
When it comes time to upgrade, switching to Orenco AdvanTex® Treatment Systems offers a dramatically more efficient, reliable, and cost-effective path forward.
The Problem with Ageing Activated Sludge Package Plants
Activated sludge depends on suspended growth biology: continuous aeration blows massive amounts of air into wastewater tanks to keep bacteria suspended and alive. While effective when brand-new, these systems present major long-term challenges as they age:
High Energy Consumption: Continuous motor blowers run non-stop, driving up monthly electric bills.
Heavy Maintenance & Operator Hours: Suspended growth systems are biologically sensitive. Shock loads, flow surges, or temperature drops require frequent operator intervention and chemical adjustments.
Rapid Sludge Accumulation: Activated sludge generates large volumes of waste activated sludge (WAS), requiring frequent, expensive vacuum truck hauling.
Nuisance Factors: Loud blower motors, vibrating equipment, and septic odors make old package plants an eyesore and earache for surrounding residents.
Why Orenco AdvanTex® is a Game-Changer for Plant Upgrades
Orenco’s AdvanTex® technology utilizes an attached-growth textile media filter rather than suspended growth aeration. Wastewater is micro-dosed over engineered textile sheets where a rich ecosystem of microorganisms treats the effluent.
This fundamental shift in process offers significant operational and financial benefits:
1. Significantly Lower Electrical Costs
Instead of running high-horsepower air blowers 24/7, AdvanTex systems use small, high-efficiency fractional horsepower pumps that dose effluent intermittently based on programmable timers. Electricity consumption drops drastically—often by 50% to 80% compared to traditional activated sludge plants.
2. Reduced Operator Visit Requirements
AdvanTex systems are exceptionally stable. Because microorganisms live attached to the textile media rather than suspended in liquid, the system naturally withstands surge flows, organic shock loads, and periods of low usage (such as seasonal drops in flow). Operators spend far less time tweaking controls or troubleshooting biological upsets.
3. Much Lower Sludge Removal Costs
In traditional activated sludge, high bacterial turnover yields huge amounts of excess sludge. AdvanTex systems incorporate multi-compartment primary/septic tanks that allow primary solids to settle and undergo long-term anaerobic digestion. Solids accumulate slowly, extending sludge pump-out intervals from weeks or months to years.
4. Quiet, Odorless, and Discreet Operation
With no heavy blowers or noisy surface aerators, AdvanTex systems operate silently. The biological process takes place under covered, insulated fiberglass filter pods, virtually eliminating nuisance odors. The low-profile pods blend seamlessly into landscaping without drawing negative attention from neighbors.
Real-World Success: The Countryside Mobile Home Park Upgrade
A prime example of this technology in action is the Countryside community in Sophia, North Carolina. Check out the case study.
The property owner faced a common challenge: an ageing activated sludge package plant that was deteriorating, costly to maintain, and situated right near residents. The new system needed to meet strict state discharge limits while lowering maintenance demands and eliminating local visual and noise complaints.
By replacing the failing package plant with an Orenco AdvanTex® System, the facility achieved:
Full compliance with existing discharge permits.
A dramatically reduced maintenance footprint and fewer required operator visits.
A quiet, low-impact footprint that eliminated odours and visual clutter in the neighbourhood.
Upgrading Your Wastewater Facilities?
If you are managing an ageing package plant that is draining your operational budget, upgrading to a packed-bed textile filter like Orenco AdvanTex® can lower your life-cycle costs while restoring reliable, hassle-free treatment. Get in touch for a free review of your project and proposal including preliminary sizing, layout, and cost estimate.
projects@aqwa.net
252-243-7693