X hits on this document

PDF document

Date: September 17, 1999 - page 6 / 9

17 views

0 shares

0 downloads

0 comments

6 / 9

This high temperature, along with significant volatile oxidation, provides for pathogenic organism destruction, required to meet Class A biosolids requirement. In addition, this technology reduces the biosolids volume that must be dewatered and/or removed by over 50%.

Advantages

  • High solids reduction

  • Beneficial reuse options within Prescott Valley

Disadvantages

  • High capital costs

  • Moderate energy costs

  • Moderate operations and maintenance requirements

  • Moderate noise and odor potential.

Aerobic Digestion This technology is a batch process that makes use of open tank/s. The tank/s are aerated and mixed (assumed via jet aeration and centrifugal recirculation pump). When waste sludge is added to the tank the biological organisms proceed to oxidize the volatile organic compounds. Approximately a 40% volatile oxidation of the biosolids can be achieved, providing for pathogenic destruction, required to meet Class B requirements. This technology reduces the biosolids volume that must be dewatered and/or removed by approximately 40%.

Advantages

  • Low operations and maintenance requirements

Disadvantages

  • Moderate capital costs

  • Moderate energy costs

  • Moderate noise and odor potential

Land Application

This technology has been used in many areas to apply Class B biosolids to

agricultural lands to provide nutrients and moisture to promote plant growth. It has been utilized successfully around the world. Permitting is required of the lands for application. Nutrient limits and

use of crop dictate application requirements.

Advantages

  • Low capital costs

  • Low/moderate operations and maintenance requirements

  • Beneficial reuse options within Prescott Valley

  • Low noise potential

Disadvantages

  • High land requirements

  • Moderate/high difficulty in locating and permitting land areas

  • Moderate odor potential

Document info
Document views17
Page views17
Page last viewedSat Dec 03 17:51:58 UTC 2016
Pages9
Paragraphs412
Words3028

Comments