Abstract

Attached-growth biological treatment systems have potential to conduct nitrification in cold-temperature climates. In this research, in order to simulate the attached-growth nitrification process (using BOBBER biological reactor) at a real wastewater treatment facility, two laboratory-scale mini-BOBBER systems were installed in a temperature-controlled room and were operated for 101 days with pure ammonium chloride feed solution. Steady-state conditions were approached at 20°C, 15°C, 10°C, and 5°C. In addition, a series of batch experiments were conducted at temperatures of 20°C and 5°C to investigate the relationship between nitrification rate and ammonia-N concentration. Results from these experiments were analyzed and compared with the water quality data from the full-scale lagoon system at Wingate. Collectively, it is possible to maintain effective biochemical nitrification in attached-growth systems under cold-weather conditions. Satisfactory performance of these systems will depend on hydraulic design and loading rates of the systems.

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Civil Engineering

Date of Award

Spring 2014

First Advisor

Ernest R. Blatchley III

Committee Member 1

Loring F. Nies

Committee Member 2

Ronald F. Turco

Download

Share

COinS