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Plant capacity of wastewater treatment – Flow per day in m3 or mgd?
Please provide a simple process flow diagram - with mass balance, if available.
Chemical analysis of the influent sludge at the WWTP - please provide, if available.
Any other data available regarding your plant treatment performance - please provide, if available.
Are there anaerobic digesters present in your plant?
How many anaerobic digesters? What is the size/volume of each?
What is the flow rate of sludge into and out of the digesters?
What is the hydraulic retention time in your digesters?
Is in-flow sludge to digester primary only or is WAS added as well? Please provide ratio.
Please provide a chemical analysis of the sludge/digestate.
What is the % volatile solids destruction in the anaerobic digesters?
Is biogas currently being captured for energy use? If so, how much m3 per day or SCFM?
Methane % of biogas?
If no biogas is being recovered, is there a desire/interest to do so?
Are there aerobic digesters present in the plant? How many? Size?
What is the composition of the aerobically digested sludge?
Do you have a BNR system in your plant?
Are there any issues effluent water quality from the plant?
Are external carbon sources utilized in the BNR system? (i.e. methanol, glycerol)?
What is the quantity of the carbon source used on an annual basis currently?
What is the cost of the carbon source used on an annual basis?
Is there a dewatering system present?
What type of dewatering system? Capacity?
What are the polymers used for dewatering?
How much polymer (in kg or lb) is being used per m3 or per dry tonne/ton of sludge?
What is the cost of polymer (per kg or lb)?
Volume of dewatered biosolids waste generated for disposal per year (tonnes/ton or m3)?
Solids content of the dewatered biosolids (%)?
Detailed chemical, metals and pathogens analysis of dewatered biosolids available?
Dewatered biosolids storage available? Capacity?
Any further biosolid treatment / stabilization system in use currently?
How are your biosolids managed currently? (i.e. landfilled, land applied, other - what?)
How are they transported?
Current cost of transportation?
Current tipping fee?
Current cost of land application (if applicable)?
How much space would be available to accommodate a biosolids processing system (in m3 or sq. feet)? (Lystek requires between 600 - 2000 sq. feet, depending on volumes)
Proximity to the dewatering system (in meters or feet)?
Proximity of the above building from digesters (in meters or feet)?
Proximity to the utilities (power supply, voltage, water etc. in meters or feet)?
Storage of treated biosolids available? If yes, what kind? (i.e. lagoons, tanks, etc.?)
Current capacity of available storage? Do you have any storage challenges?
Do you have other types of organic waste (i.e. food waste, source separated organics, septage, etc.) that you would like to have managed as well?
Please describe the nature and types of this waste?
What kind of volumes would be included in this on an annual basis?
How are these materials collected and managed presently?
What has the history of biosolids management been like in your area from a Public & Stakeholder perspective? Has it been positive? Negative? Neutral?
How does your Public & other stakeholders (i.e. staff, political leaders, etc.) generally view the beneficial use of biosolids?
What kinds of challenges have you run into from a Public/Stakeholder engagement perspective, if any?
Has your organization ever experienced any negative media or public backlash regarding biosolids? If so, how have these situations typically been managed? Do you have a formal process in place for this?
Have you experienced any challenges related to biosolids management recently? What were they?
Have you and/or your staff and/or other leaders been trained in public/media/stakeholder relations?