Note the variations in design and actual flow. The miniMBR® system is producing fantastic numbers even with higher loading concentrations and lower flow rates!
TN and TP are consistently below effluent concentration limitations established by the NPDES Permit.
Innovatreat calibrated dosing of MicroC and poly-aluminum chloride to the biological process in order to control for complete nitrogen and phosphorous removal. Chart 1 displays the actual levels of phosphorous and nitrogen (ENR) spanning March 26th through April 10th, 2020, demonstrating consistent performance.
Innovatreat was asked to play a major role in the modernization of the wastewater treatment facility of Harbour View Community, a quiet neighborhood near the Northeastern Maryland town of Chesapeake City. The project would upgrade the facility, originally built in the 1970s, to meet modern National Pollutant Discharge Elimination System (NPDES) standards for Enhanced Nutrient Removal (ENR) processes. The challenge, however, would be to improve treated effluent quality in a noise and odor free facility wedged tightly among existing residences with minimal disruption to the existing process for discharging into the Elk River tributary of the Chesapeake Bay.
Client Harbour View Cecil County DPW
Date December, 2019
The facility had undergone minor improvements over the years and was struggling to maintain consistent effluent quality. Innovatreat worked closely with GMB Engineers and Bearing Construction to provide a complete miniMBR® Package Plant System for Cecil County that included influent coarse and fine screen systems, chemical dosing systems, biological tanks, membrane filtering systems, UV disinfection systems along with complete system SCADA controls.
The Innovatreat miniMBR® Package Plant was delivered in pre-wired, pre-piped and pre-tested sub-sections for final connection by Bearing Construction and Innovatreat staff in the Spring of 2020. A single biological reactor with aerobic and anoxic zones was utilized for all flow regimes. The biological reactor was constructed with a vacuum-infused, close-molded monolithic Fiberglass Reinforced Plastic (FRP) structure. Innovatreat supplied two identical miniMBR® process skids, for 100% redundancy, to control bio-reactor circulation, membrane filtration and cleaning sequences networked with an ancillary control system designed to control biological air, level sensing, disinfection, headworks systems and SCADA.
The results were excellent with, actual levels of phosphorous and nitrogen in the effluent safely below limits despite, high diurnal flow variations and influent loadings of total phosphorous and nitrogen consistently greater than design concentrations. ENR levels are easily and consistently obtained by the miniMBR® process.