CleanB® Biosolids

CleanB® Biosolids Characteristics

Percent solids 22-26%
Appearance Light brown granular cake
pH 6.5 to 7.5
Odor Earthy
Lime content N/A
Total N 4-6%
Total P 2-3%
Total K 0.2-0.5%
Typical distribution method Truck and spreader
Ground water impact Minimal nutrient leaching
Water conservation Provides water retention

CleanB treated biosolids meet Class B biosolids standards in accordance with Title 40 Code of Federal Regulations (CFR) Part 503 through Alternative 1: Monitoring of Indicator Organisms. CleanB™ biosolids meet Vector Attraction Reduction (VAR) requirements for land application through Option 10: Incorporation. Other options exist under a number of different situations, including the use of Option 4: Specific Oxygen Uptake Rate (SOUR) when used with extended aerobic processes, or Option 5: Aerobic treatment for at least 14 days above 104°F with an average temperature over 113°F when the material is processed at a BCR Accelerated Composting facility.

By avoiding digestion, CleanB biosolids retain a higher nutrient content, making them a highly desirable beneficial reuse product. The biosolids have a near neutral pH, expanding the number of viable disposition sites compared to lime stabilization. CleanB treatment oxidizes sulfides, sulfates, and mercaptans (odor-producing chemicals) and produces an end product free from foul odors. The odor-free nature of CleanB biosolids further increases the desirability of the product and expands viable application sites to those in close proximity to residences.

Benefits of CleanB® Biosolids

CleanB biosolids deliver numerous key advantages when compared to other Class B products produced through traditional management technologies:

  • Elimination of odor issues: CleanB effectively eliminates odor issues associated with end product disposition. The CleanB chemical treatment eliminates odorous compounds, producing a biosolids product with a pleasant, earthy smell. Land application can take place in close proximity to residences without generating nuisance odors or odor complaints.
  • Improved product quality: Eliminating digestion produces a more consistent end product and enhances nutrient retention in the biosolids, resulting in a more nutrient-rich, restorative Class B product.
  • Expanded disposition options: Regulatory restrictions can limit land application of the high pH material produced by lime stabilization, and few land application facilities can accept it. CleanB produces a pH neutral product that expands the number of viable land application sites.
  • Simplified regulatory compliance: BCR maintains open communication with the U.S. EPA and state environmental agencies to ensure our end products achieve current and future regulatory compliance. CleanB biosolids meet the U.S. EPA requirements for Class B biosolids suitable for a wide variety of permitted land application sites.
  • Reduced nutrient loss: Light textured (sandy) soils possess a low cation exchange capacity (CEC), resulting in nutrient loss. Adding CleanB biosolids to the soil raises the CEC and enables the soil to better hold onto nutrients like potash and nitrogen which would otherwise leach out of the soil.
  • Improved plant survival and growth rates: Organic matter improves the aggregate strength of soils, making the soil more resistant to compaction, improving root penetration, and helping plants establish and sustain growth. Additional nitrogen fertilizer alone cannot compensate when organic matter is low. CleanB biosolids add necessary organic material back to the soil.