Nitrate removal from irrigation run-off using packed-bed bioreactors /
2.0, and 2.5 gpm). Efficiency of N03- and N02- removal was
| Main Author: | |
|---|---|
| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
|
| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 2.0, and 2.5 gpm). Efficiency of N03- and N02- removal was 3.5:1 C:N as the electron donor, and NH4NO3, Supplied the anaerobic environment (1.0 to 2.0 ppm DO). The seed colony and 200 ppm for N03- (96% removal) and 1.0 gpm and 50 ppm for and N02- removal was observed along 16 treatment combinations and necrosis of leaf material. concentration step changes from 150 to 100 ppm and 100 to 50 concentrations remained steady with slight removal (6.3 -1 1. Denitrification of irrigation runoff was achieved using a electron acceptor (NO3-). The fate of N03-, N02-, and NW, as equilibration, was also observed at 1.0 gpm with negative fixed colony of facultative, heterotrophic bacteria in an flow rate of 1.0 gpm (0.58 hour HRT). The majority of the Hydrogenophaga, Chromobacterium, Rhodobacter, Acidovorox, and I%) occurring in the first two regions. Efficiency of N03- Intermediate regions reduced 5.2-16.5%. Ammonium Methylobacterium. A sub-irrigation growth study utilizing N02-(O.3 ppm effluent). Transient response time, or colony N03- (76.5%) were removed in the first region of the columns observed to be greatest at a treatment combination of 1.0 gpm of 1.0 gpm and 150 ppm was performed on Catharanthus roseus. of N03'(50, 100, 150, and 200 ppm) and flow rate (I. 0, 1. 5, ppm. Approximately two days were needed for equilibration to produced (1.0 ppm) within the first region of the columns regions of the columns at an influent of I 00 ppm N03- and a runoff holding ponds. Methanol was supplied at a ratio of steady state. Microbial species dominating in the bioreactor the discharged bioreactor water from a treatment combination they passed up the columns was analyzed along four equal Those treated with bioreactor water showed severe chlorosis was derived from stirred pond water acquired from golf course were identified as those in the genera Pseudomonas, with subsequent regions removing 4.8-7.6%. Nitrite was with the majority (21.12%) being removed in the final region. |
|---|---|
| Item Description: | "Major subject: Horticulture". Vita. |
| Physical Description: | xi, 118 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |