Study of the Acceleration of Nitrogen and Phosphorus Removal with a Sequencing Batch Reactor Activated Sludge Process.
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Accession number;00A0624850
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| Title;Study of the Acceleration of Nitrogen and Phosphorus Removal with a Sequencing Batch Reactor Activated Sludge Process. |
| Author;
YAMAOKA MASARU
(Minist. of Agric., For. and Fish., Natl. Res. Inst. of Agric. Eng.)
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Journal Title;Bulletin of the National Research Institute of Agricultural Engineering
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Journal Code:S0487A
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ISSN:0915-3306
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VOL.;NO.39;PAGE.1-63(2000)
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| Figure&Table&Reference;FIG.72, TBL.29, REF.146 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;This paper indicated that a sequencing batch reactor(SBR) activated sludge process would be a suitable process for rural sewage facilities for the removal of nitrogen and phosphorus with the improvement of operation and the addition of a device. In Chapter II, the background of this research was reviewed. This review was done from the following points. (1) Necessity of nitrogen and phosphorus removal to prevent damage to agriculture by water pollution and the eutrophication of rivers, lakes and ponds. (2) Present condition of waste water purification technology for the removal of organic pollutants, nitrogen and phosphorus. (3) Present system of waste water purification in rural areas. The review made clear the challenging task of the removal of nitrogen and phosphorus from the domestic waste water in rural areas. At the point of nitrogen removal, the processes that are installed in rural areas usually have the reactor of the relatively larger volume in comparison with influent waste water volume and are operated with a relatively longer sludge retention time. Nitrification occurs easily in these processes, so the processes installed in rural areas are suitable for biological nitrogen removal. Actually, biological nitrogen removal is already installed in some rural sewage facilities. However it was reported that in some facilities of the contact aeration process, biological nitrogen removal process didn't perform enough nitrogen removal. In the case of biological nitrogen removal in the SBR process and the oxidation ditch(OD) process by intermittent aeration, the nitrogen removal ability depends on the operation of the aeration system. The reactor must be given aerobic condition and anaerobic condition of equal durations in a suitable sequence to perform a higher rate of nitrogen removal.... (author abst.) |
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