Case Study of the Month
Waste to Energy Facility – Camden, NJ
An Energy-from-waste facility in New Jersey chose a Geotube® system to dewater ash sludge residuals from their waste pond on site. For this project, the Geotube® dewatering system was selected as an alternative to mechanical dewatering and was used for evaluating permanent installation of the system for ongoing operations. Geotube® MDS containers were placed in dewatering and roll-off boxes in the containment area located near the waste pond. The objective of the project was to process and manage the ash sludge residuals to pass a paint filter test for subsequent disposal. Upon completion, evaluations would be made on future clean-out of the waste pond with the ultimate goal of installing a permanent system for solids dewatering on site. Our local sales agent, Peter Kaye, helped with this project. He can be reached at firstname.lastname@example.org or 215-870-7866.
WaterSolve LLC provided the equipment, Geotube® containers, chemistry, chemical feed equipment, and operation of the equipment to filter and collect the ash sludge from the waste pond. WaterSolve personnel were on site to assemble the polymer make-down unit as well as the Geotube® containers. Upon completion, pumping from the sludge pond would start and continue for approximately 10 days. During pumping operations, the ash sludge was to be pumped from the sludge pond via hydraulic pump to a mix tank located in the containment area. This mix tank was used to create a consistent slurry to aid in chemical conditioning. From the mix tank, another hydraulic pump was used to pump the slurried sludge into the Geotube® containers. Prior to the Geotube® containers, the Solve 137 emulsion polymer was injected in-line via the WSLP-1000-V2 polymer make-down unit. The WaterSolve technician monitored the chemical conditioning and made changes as needed. The treated ash sludge was then pumped into the Geotube® containers, where the solids were captured and the clean filtrate was returned back to the wastewater plant. The Geotube® containers were pumped to their maximum fill heights and allowed to dewater down to a point where pumping could be continued. Pumping into the Geotube® containers was done until all containers were completely filled. The Geotube® containers were successful in capturing and dewatering the ash sludge in this project.
The Geotube® containers were placed in roll-off boxes to control the filtrate.
An MDS Geotube® container being filled with ash sludge.
This lined pond contained the ash sludge that needed to be removed.
A sample of treated ash sludge taken prior to entering the Geotube® containers. It has great water release, clarity, and flocculation.