All data compiled and compared to industry standards or benchmarks (e.g., aerobic versus anaerobic)
Ranking of odor sources and recommendations for emissions reduction
Risk analysis for the addition of food waste
Recommendations for improved performance and increased throughput
Identification of key process limitations
Providing a Clear Path Forward for Your Compost Facility
After we conduct our compost facility audit, you will be provided with a final report outlining the current state of your facility and a clear path for optimization. The report will include:
Straight-Forward Compost Facility Audit Services
Our standard compost facility audit service includes the following samples and measurements, each benchmarked against ideal conditions. We also have optional services to further optimize your facility’s compost process.
Increase Throughput
by 150%
Reduce Odors
by 10-100x
Reduce Site
Footprint by 15-30%
Increase Compost
Stability by 1-2 Solvita
Realize the Benefits of a Compost Facility Audit
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Geoff.Hill@HDRinc.com
Project Manager
Geoff Hill, Ph.D.
— John Doyle, Z-Best Products | Gilroy, CA
“Over the last few years, Geoff has saved us hundreds of thousands of dollars by developing new air emissions test methods, conducting source testing, and delivering compost process consulting and recommendations.”
Is Your Compost Facility Ready for Backyard Barbeque Season?
Optional Services
Storage/
Finished Product
Curing Composting
Active Composting
Feedstock
Mix
Storage/
Finished Product
Curing Composting
Optional Services
Active Composting
Feedstock
Mix
Compost Material
Density
C/N
Moisture
Solvita stability and maturity
Temperature
Compost Material
pH
pH
ASP systems: air flow rate
All systems: O2, CO, CH4, H2S,
Gas Analysis
Solvita stability and maturity
pH
Compost Material
ASP systems: air flow rate
All systems: O2, CO, CH4, H2S,
Gas Analysis
Solvita stability and maturity
pH
Compost Material
All systems: O2, CO, CH4, H2S,
Gas Analysis
Dynamic in-field analysis with SM100 from Scentroid, or sampling air in chosen locations for off-site odor analysis.
Loading rate, moisture content and emission reduction performance
Composting is a biological reaction that can be inhibited by poor process control. With monitoring and intervention to optimize the biophysical environment the reactions can be sped up.
Increase Throughput by 150%
This can result in an ability to process more material in the same time period as compared with the optimized state.
x
Odors can be dramatically reduced by keeping oxygen up and temperatures down and we’ll figure out how to achieve this together with your site constraints and equipment available.
When process conditions like oxygen and temperature fall out of optimal zones, biological reactions become anaerobic. The intermediate and final products of anaerobic reactions smell terrible.
Reduce Odors by 10-100x
x
With reduced temperatures, decomposition rates speed up and this can result in improved stability (better compost) and higher maturity (more available nitrogen).
Many operators consider high temperatures a sign of an optimized process and use terms like “cooking” to describe the biology. In actuality, temperatures above 65 C reduce the decomposition rate and tend to generate excess odors.
Increase Compost Stability by 1-2 Solvita
x
This can be helpful to reduce the amount of stormwater generated, reduce operations and maintenance costs, or move further from sensitive receptors.
Instead of increasing the throughput of the site, post process optimization, it is alternatively possible to reduce the site footprint.
Reduce Site Footprint by 15-30%
x
Perimeter Odor Analysis
Biofilter Analysis
How We Can Assist Our Healthcare Clients Right Now
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The difference between a highly profitable and low-odor compost facility and the type featured in the news for unsavory reasons is all about facility optimization. Save time, money, and headache by optimizing your compost process with our compost facility audit – a one-day onsite analysis and benchmarking exercise with proven results.