Municipal Wastewater

Before: Lagoon with 7 surface aerators totaling 28 HP.  After: Identical capacity lagoon with 4 MBD (Micro Bubble Diffusion) aerators totaling 8 HP.

Before: Other surface aerator – frozen conditions limit oxygen transfer.. After: Same facility, different lagoon. Open area of water with higher oxygen transfer with MBD (Micro Bubble Diffusion) in winter.

  Issue: An Iowa wastewater treatment facility has a three-pond lagoon system that receives 300,000 GPD influent. Sludge levels are 26″ – 32″ in cell one and sludge removal is required. In 2001, the estimated expense to waste the lagoons and make the associated equipment repairs was approximately $300,000. Action: Four 2-HP Micro Bubble Diffuser…

Overview:  A North Carolina Service Company needs a solution for lift station odor control.  Several efforts to reduce the odor include rental of an air scrubber system with unsustainably high cost. Solution:  Installation of MBD Aerator Model 200 results in elimination of odors within 24 hours.                  …

Overview:  North Carolina residents complain about odor emanating from grinder tanks connecting their homes to the local wastewater treatment plant. Solution:  Install MBD aeration to reduce hydrogen sulfide (H2S).  Pre-aeration H2S levels ranges from 0.009 ppm to 0.560 ppm with a mean of 0.0554 ppm.  After VBT treatment H2S levels rarely registers over 0 ppm.  …

Overview:  A Texas wastewater treatment plant has a five lagoon system of 24 surface acres.  Average influent is 1.2 million gallons per day.  Regulation requires sludge removal at 36-48” of depth in their 8 foot deep lagoons. Goal – reduce sludge without impacting water quality. Solution:  Install seven (7) MBD Model 600 aerators totalling 21 HP. …

Overview:  A Minnesota community experiences odor problems in a municipal lagoon serving a turkey processing plant. The engineered solution is adding aeration to minimize the odors. Solution:  The odor problem is corrected upon MBD installation.  In addition, the MBD solution with six 3 HP Model 600 units is $387,000 less than the second place bid. Electrical savings…

Overview:  An Iowa Wastewater Treatment Facility has a three pond lagoon system that receives 250,000 GPD influent.  Sludge levels are 26” – 32” in 5’ deep lagoons and sludge removal is required. Solution:  Four Model 600 MBD units are installed totalling 12 HP.  Within 14 months sludge is reduced to an average of 3” – an…