case study
Center Street Wastewater Treatment System
Location
Weston, MA
Client
Commercial Property Owner
Project Type
Onsite wastewater treatment (Title 5, 4M facility)
Overview
This system treats commercial wastewater from a multi-tenant shopping plaza and additional commercial businesses along Boston Post Road. It uses an MLE-style activated sludge process with MBBRs, complete mix reactors, and clarification of effluent prior to sub-surface disposal below a parking lot. Robial has served both as the system’s Engineer since 2016 and is the current Operator of record.
Challenges
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Complex treatment train with hybrid biofilm and suspended-growth zones
High dense residential and commercial area sensitive to odors
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Long-term need to balance treatment performance with cost-effective maintenance
Aging infrastructure requiring phased physical rebuilds and process adjustments
Intermittent, variable-strength influent from restaurants and commercial tenants
Our Approach
Robial has provided licensed operations, hands-on repairs, and engineering design services to guide the system’s transition from a planted ecological design to a streamlined activated sludge configuration.
Center Street reflects Robial’s deep operational and engineering expertise in decentralized wastewater systems. The reconfigured process has improved maintainability, solved odor issues and provided long-term dependable performance while assisting the Owner to achieve regulatory compliance. Our involvement showcases Robial’s ability to integrate field service, design insight, and adaptive management for small commercial treatment systems.
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