Agricultural Wastewater

Issue: A chicken egg-processing plant is experiencing malodor from a 800,000-gallon lagoon in its wastewater treatment facility. BOD in this lagoon is 2,600 mg/L. Flow into the lagoon is about 35,000 GPD, and the system operator estimated influent BOD of 1,500 mg/L. Action: Install 2 MBD-12 aerators. Odor improves; results are less than expected. New…

I Issue: A 17,000-head pig nursery is experiencing odor problems in a 16 million gallon manure lagoon. System loading is 2,890 lbs. BOD/day. Lagoon BOD is 12,100 mg/L Lagoon HPC (Heterotrophic Plate Count) is 750,000 cfu/ml Lagoon TKN is 1,080 mg/L Lagoon TSS is 6,180 mg/L Malodor is high Action: Install six 2 HP MBD…

Overview:  A North Carolina company seeks to minimize pumping frequency and expense for solids removal from hog lagoons. Solution:  Install MBD Aeration based on lagoon volume.  Systems tested have an average sludge reduction from 5’ to 3.5’ over a 60 day period.  Electrical cost to reduce BOD from 400 feeder pigs in this test is…

Overview:  Research project with Iowa State University measures dairy lagoon odor before and during treatment with Vacuum Bubble Aeration equipment. Results:  During treatment with MBD Aeration there is a 94% odor reduction over 48 days.  Hydrogen sulfide is reduced from 22.3 ppm to 0.2 ppm.