System dynamics and controller development for denitrification using a packed column bioreactor /
Agency guidelines for nitrate discharge. One such method
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | Agency guidelines for nitrate discharge. One such method amount of nitrate present in their runoff so that they may automatic control would be very useful. being studied is biological denitrification. For this study, both positive and negative step changes in the influent by the system met or exceeded Environmental Protection Agency clear, but effluent nitrate. levels did not exceed colony was established by recirculating this pond water denitrifying bacteria to attach themselves. The system was different influent nitrate concentrations and four different discharge it without violating Environmental Protection discharge, again suggesting the limits of the system were not Environmental Protection Agency guidelines for nitrate for a system that does not have tight environmental control, guidelines for nitrate discharge, suggesting that the limits hydraulic residence times, with the intent of determining the in a controller equation for an automated system. However, inoculated with water from a golf course pond. The bacterial it was determined that automation was not necessary for this meets Environmental Protection Agency guidelines. However, monitoring strategy is sufficient for producing effluent that N/L) effluent nitrite concentrations. All effluent produced negative step change. The positive step change was not as nitrate concentration was also studied. In general, the nitrate/nitrite concentrations were monitored for four of the system were not reached. The system's response to Once a colony was well established, effluent and influent percentages between 62 and 96 percent, with low (< I mg N02- reached. The combination of these two studies was to result removal characteristics. The system attained removal system was able to attain equilibrium within 6 hours of the The columns were filled with lava rock to provide sites for The nursery/floral industry is looking for ways to reduce the through the system, adding nitrate and methanol as needed. two 1.5 m x 0.3 m columns were built and placed in parallel. type of system under a very controlled environment. A simple |
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| Item Description: | "Major subject: Agricultural Engineering". Vita. |
| Physical Description: | xiii, 66 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 42-44. |