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III/53
The ozonation process operates most efficiently at pH 6 to 7 and is
reported to provide an economically feasible alternative to activated
carbon adsorption for COD reduction in secondary effluents from small
plants where carbon regeneration is not practical.
BIOLOGICAL PROCESSES
General
Conventional biological processes are 'veIl es tablished for secondary
\vaste treatment although they are often unpredictable and difficult
to control due to the inherent variability introduced by depending on
a living organism. Hm.,ever, much progress has been made in recent
years tmvard defining the environmental requirements and performance
capabilities of the microorganisms utilized in v]aste treatment. This
has leG to lli.Or(; reliable design of conventional processes and to modi-ficationsof
them as ,.,ell as entirely new methods designed for specific
treatment objectives.
The possible methods for the expansion of the activated sludge process
for the Haumee River Plant are discussed in Section III-A of this Report.
Biological Nitrogen Removal
As an a,lternative to the physical methods di.scussed previously, it
is possible to remove nitrogen from ,.,aste'h1ater by biological means.
The process occurs in three sequential reactions beginning with the
conversion of ammonia (the form in vlhich most nitrogen exists in 1"3"\"
smvage) to ni tri te. The second reaction is the oxida tion of ni trite
to nitrate, and the third is the reduction of nitrate to nitrogen gas
Object Description
| Title | Master plan for sewers (pt. 3) |
| Alternative Title | Water pollution control plant |
| Contributor |
Henry B. Steeg & Associates Fort Wayne (Ind.). Board of Public Works |
| Topic | Public Utilities |
| Subject | Sewage disposal--Indiana--Fort Wayne |
| Geographical Coverage | Fort Wayne, Indiana |
| Date of Original | January 1972 |
| Time Period | 1900-1999 |
| Source | Print version: Master plan for sewers. Pt. 3: Water pollution control plant. (Indianapolis, Ind.: Henry B. Steeg & Associates, 1972), 1 v. |
| Additional Availability | Print version might be available at IPFW Helmke Library. See online catalog. |
| Relation | Third of three parts of Master plan for sewer. Pt. 1, Relief sewers, digital barcode is 30000126499916; Pt. 2, Sanitary sewers, digital barcode is 30000126499924; |
| Rights | Copyright Indiana University-Purdue University Fort Wayne, 2006- . All rights reserved. May not be reproduced without permission. For information regarding reproduction and use see: http://cdm16776.contentdm.oclc.org/cdm/about/collection/p16776coll1/ |
| Date Digitally Created | April 17 2012 |
| Digital Publisher | Walter E. Helmke Library, Indiana University-Purdue University Fort Wayne |
| Digitization Specifications | This pdf file was derived from 400 dpi, 1-bit, uncompressed TIFF images that were scanned from the originals using a Fujitsu 5750C scanner with Adobe Acrobat 9.0 Professional scanning software, black and white configuration. |
| Content Type | Text |
| Digital Format | text/pdf |
| Collection | Fort Wayne Area Government Information |
| Identifier | 30000126499932 |
| File Name | 30000126499932.pdf |
Description
| Title | Page 134 |
| Transcript | III/53 The ozonation process operates most efficiently at pH 6 to 7 and is reported to provide an economically feasible alternative to activated carbon adsorption for COD reduction in secondary effluents from small plants where carbon regeneration is not practical. BIOLOGICAL PROCESSES General Conventional biological processes are 'veIl es tablished for secondary \vaste treatment although they are often unpredictable and difficult to control due to the inherent variability introduced by depending on a living organism. Hm.,ever, much progress has been made in recent years tmvard defining the environmental requirements and performance capabilities of the microorganisms utilized in v]aste treatment. This has leG to lli.Or(; reliable design of conventional processes and to modi-ficationsof them as ,.,ell as entirely new methods designed for specific treatment objectives. The possible methods for the expansion of the activated sludge process for the Haumee River Plant are discussed in Section III-A of this Report. Biological Nitrogen Removal As an a,lternative to the physical methods di.scussed previously, it is possible to remove nitrogen from ,.,aste'h1ater by biological means. The process occurs in three sequential reactions beginning with the conversion of ammonia (the form in vlhich most nitrogen exists in 1"3"\" smvage) to ni tri te. The second reaction is the oxida tion of ni trite to nitrate, and the third is the reduction of nitrate to nitrogen gas |
