The Honey Monster at the Smiths Creek Landfill screens the flow and removes trash before septage is allowed to enter the bioreactor portion of the landfill.
Researchers in Michigan are trying to determine if liquid septage can super-charge the breakdown of garbage inside landfills. Is septage the secret ingredient needed to turn a regular landfill into a bioreactor landfill – producing more biogas and freeing up space for even more garbage?
Starting in 2005 the research team associated with Smiths Creek Landfill in Michigan constructed a septage receiving area to screen septage, store it and then pump it into infiltration pipelines buried in one portion of the landfill.
JWCE in collaboration with polymer suppliers design a waste activated sludge thickening system
The City of Brockville in Ontario, Canada was undergoing an upgrade to a secondary treatment system in order to meet more stringent effluent limits established by Ontario’s Ministry of Environment. However, achieving the new limits also increased waste activated sludge (WAS) volumes, which resulted in the need for additional digester capacity. The city was faced with the decision to build another $2.9 million digester or add two rotary drum thickeners for less than $1 million to process the additional sludge.
The Challenge – Varied Waste Activated Sludge:
Unlike larger municipal waste treatment plants, which tend to experience steady biological conditions and more consistent average waste activated sludge (WAS) concentrations, the City of Brockville had wide variations in both — a common situation for smaller municipal waste treatment systems. In addition, the initial design specified 100 lbs/hour solids throughput; however, operating conditions went up to 200 lbs/hour, resulting in a post-installation change.
Solution Rotary Drum Thickeners:
JWC recommended two Monster Drum Thickeners for their low maintenance, easily removable wedgewire or mesh panels, and for their adaptive controls to compensate for fluctuation in sludge concentration and flow. In meeting the new effluent requirements, Malcomnson’s team estimated an additional 20 to 30 m3 of primary sludge and another 200 to 250 m3 of secondary sludge per day. However, since secondary sludge is much thinner — 0.5 percent compared to primary sludge, which is 3 to 4 percent — the Monster Drum Thickeners converted the 200 m3 secondary sludge into 20 m3 of 5 percent thickened waste activated sludge (TWAS). As a result, less water is sent to the digesters. Although the digesters are handling an additional 40 to 50 m3 of primary and secondary sludge, they remain within their capacity. Because of the system’s flexibility, the post-installation design change was easily accommodated and did not affect project costs.
“Our system is adaptable to allow higher throughput because we feed the sludge into the screens in a proprietary pattern that separates the water more quickly than other similar WAS thickening systems,” said Bert Irwin, of JWC “The unique pattern allows us to treat lower concentrations at higher flows.”
Reducing Emergency Sewer Repairs in Big Box Pump Lift Stations Caused by Non-Dispersible Debris
AQUALIS and JWC Environmental (JWCE) have teamed up to provide a solution for retailers that reduces lift station clogs caused by wipes, rags, clothing, rocks, wood, plastics and other non-dispersible debris. A growing number of major retailers are adopting Monster Industrial Manholes, from JWCE, equipped with high-powered dual-shafted grinders and proprietary cutter technology that shreds wipes, diapers and other debris into small pieces to keep lift pumps up and running – virtually eliminating the need for emergency repairs, and cutting municipality fees for discharging pump-clogged trash into sewage lines.
Wastewater treatment plant operators have dealt with clogging problems at their plants and pump stations for decades, but the meteoric rise in the use of disposable wipes and other non-dispersible products has accelerated the problem to epidemic proportions.
Big Box Dilemma
This problem is in no way limited to municipal wastewater treatment facilities. The growing volume of non-dispersible solids is just as much a serious and growing issue for commercial operations, such as healthcare facilities, multi-family developments, high-traffic convenience stores, and big box retailers. Many of these facilities maintain on-site pump lift stations, which are the first to be impacted by this non-dispersible debris.
Servicing one of the world’s leading retailers, AQUALIS was tasked with finding alternative solutions to the non-dispersibles problem.
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