Document Type
Thesis
Date of Award
5-31-1990
Degree Name
Master of Science in Civil Engineering - (M.S.)
Department
Civil and Environmental Engineering
First Advisor
Yeun C. Wu
Second Advisor
Paul N. Cheremisinoff
Abstract
The sludge produced by wastewater treatment plant has some major characteristics such as high COD ( 52093 mg/1 - 79683 mg/1) and VS ( 19247 mg/1 - 44178 mg/1). The present laboratory investigation has indicated that successful treatment and purification of the subject of sludge is possible using multiple-stage anaerobic digestion system.
The multiple-stage system is capable of degrading 40-55% of COD and 50 to 60% of VS. The conventional digestion system degrades 30-45% of COD and 40-50% of VS. After treated by conventional system and multiple-stage system, the concentration of COD and VS are still high (21200 mg/1 - 60873 mg/1), (9835 mg/i to 22370 mg/1) and (18040 mg/1 - 50977 mg/1), ( 5751 mg/1 - 17701 mg/1), respectively. These two systems which were studied is one of the primary treatment of the sludge. The retention time of multiple-stage system equals to nine, fifteen, twenty days by 1.25, 0.6, 0.45 gal/hr flow rate, respectively. Both conventional digestion system and multiple-stage digestion systems will be theoretically discussed by the following study.
Recommended Citation
Tsao, I-Chang, "Study of essential factors affecting the efficiency of sludge digestion" (1990). Theses. 2972.
https://digitalcommons.njit.edu/theses/2972
