The Future of Sludge Disposal: A Fresh Perspective after Sandy

Jim Meehan – Executive Director

Rahway Valley Sewerage Authority

Recent Plant UpgradeRecently completed a plant expansion, including:

• Increased pumping capacity based on 100 year storm

• Raised grade along river approximately 10 feet

• Upgraded backup electric including a Cogeneration facility, allowing us to go on “Island Mode” for 16 days during Superstorm Sandy

(Approximate Construction Cost: $170M)

Storm Response Considerations• Additional Storage Tanks; think outside the

box:• Utilize offline primary or secondary tanks• Temporarily increase SVI in secondary

• Plan for out of state disposal sites• Modify bid specifications for sludge

disposal/hauling to include alternate

Review Possible Last Resort Options• Disposal at garbage incinerator facilities

– Establish which facilities are available to a plant– Review any technology limitations to accepting biosolids.– Review permit barriers and weather emergency approvals

would be possible. Begin discussions with appropriate agencies.

• Onsite open air storage of dried/dewatered biosolids

– Establish a location suitable for storage– Review storm water protection measures required

Conclusions:• Advanced preparation will save time during

emergency:» Plan a temporary thickening/dewatering scenario

• Involve vendors early to establish a plan of action and have the required utilities and piping connections available

» Review options for power generation and establish backup locations where temporary generators can be connected to critical equipment• May not be able to use plant distribution. Have equipment

and/or building specific utility connection options.