Neutralizer® Class A Residuals

Neutralizer® Residuals Characteristics

Percent solids 18-24%
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 N/A
Typical distribution method Truck and spreader
Ground water impact Low nutrient leaching
Water conservation Water retention in soils

The Neutralizer produces a consistent, fertilizer grade residual that expands the number of viable end use options. Neutralizer treated residuals meet Class A/EQ biosolids standards in accordance with the United States Title 40 Code of Federal Regulations (CFR) Part 503 through Alternative 6: Biosolids Treated in a Process Equivalent to a Process to Further Reduce Pathogens (PFRP). Neutralizer meets Vector Attraction Reduction (VAR) requirements typically through Option 1: 38% Reduction in Volatile Solids Content, although VAR can also be achieved through other options. The residuals may be registered as a commercial fertilizer with the Department of Agriculture in various states.

By avoiding digestion, Neutralizer residuals retain a higher nutrient content, making them a highly desirable beneficial reuse product. When applied as a soil amendment or fertilizer, the residuals provide an excellent source of nitrogen and organic materials. The pH of the residuals can be adjusted to meet client needs, expanding the number of viable disposition sites.

Neutralizer treatment oxidizes sulfides, sulfates, and mercaptans, producing an end product free from foul odors. The odor-free nature of Neutralizer residuals further increases the desirability of this Class A/EQ product and expands viable application sites to those in close proximity to residences. In addition, Neutralizer residuals reduce phosphorus leaching, which poses a threat to ground or surface water. Neutralizer residuals have an extremely low P index (measurement of phosphorous leachability).

Benefits of Neutralizer® Residuals

Neutralizer residuals deliver numerous key advantages when compared to other Class A products produced through traditional management technologies:

  • Elimination of odor issues: Neutralizer effectively eliminates odor issues associated with end product disposition. Neutralizer residuals have a pleasant, earthy smell. Fertilizer application can take place in close proximity to residences without generating nuisance odors or odor complaints.
  • Expanded disposition options: Regulatory restrictions significantly limit land application of Class B material compared to the Class A/EQ residuals. Neutralizer produces a pH-adjustable, fertilizer grade product that greatly expands the number of viable end use options which include fertilizer and soil amendment options.
  • 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.
  • Reduced nutrient loss: Light textured (sandy) soils possess a low cation exchange capacity (CEC), resulting in nutrient loss. Adding Neutralizer residuals 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. Neutralizer residuals add necessary organic material back to the soil.