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http://hdl.handle.net/123456789/844
Title: | Process and installation for removing nitrates from residual waters in cities | Other Titles: | Procedeu si instalatie de indepartare avansata a nutrientilor din ape uzate orasenesti utilizand ca sursa externa de carbon-namol primar prefermentat | Authors: | Dinu, Laurentiu Razvan Dumitrescu, Ciprian Ghita, Ileana Patroescu, Viorel Ion Pena-Leonte, Eliza |
Keywords: | Nitrate;Removal;Wastewater | Issue Date: | 30-Oct-2009 | Abstract: | The invention relates to an anoxic-anaerobic-aerobic biological process for removing nitrates and phosphorus from residual waters, which uses prefermented primary mud hydrolysate as supplementary carbon source. According to the invention, the process consists in treating the residual water in an area of denitrification at a retention time of 7 h in the presence of prefermented mechanical mud, the reaction mixture flows gravitationally in an anaerobic reaction area where there is performed the dephosphorisation at a retention time of 2 h, where from it reaches the aerobic phase where there are performed the biodegradation and nitrification at a retention time of 7 h, at a mud concentration of 3 gds/l, afterwards the mixture is subjected to decantation there resulting removing efficiency of 86% for nitrates and 75% for total phosphorus. |
Description: | Patent Assignee Name(s) and Code(s): ECOIND INST NAT CERC DEZVOLTARE ECOLOGIE |
URI: | http://hdl.handle.net/123456789/844 |
Appears in Collections: | Patents |
Files in This Item:
File | Description | Size | Format | Existing users please |
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Documentatie RO122634B1.pdf | 30.35 kB | Adobe PDF | Request a copy | |
RO122634B1.pdf | 91.28 kB | Adobe PDF | Request a copy |
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