Method and device for treating wastewater containing tetramethylammonium hydroxide and ammonium nitrogen
A method for treating wastewater containing tetramethylammonium hydroxide (TMAH) and ammonium nitrogen includes the steps of introducing an ammonium-nitrogen-containing solution without TMAH into a single reactor, denitrifying the ammonium-nitrogen-containing solution by using microorganism includin...
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| creator | CHIANG MING-KUEI CHEN CHIN-TE LIN JIH-GAW LIANG YINGANG LEE DER-MING SUNG KENGUAN LAN CHIEN-JU |
| description | A method for treating wastewater containing tetramethylammonium hydroxide (TMAH) and ammonium nitrogen includes the steps of introducing an ammonium-nitrogen-containing solution without TMAH into a single reactor, denitrifying the ammonium-nitrogen-containing solution by using microorganism including nitrifying bacteria and anammox bacteria under a dissolved oxygen concentration of 0.1-0.5 mg/L and pH of 7-8; when the denitrification efficiency reaches a steady state, introducing TMAH into the ammonium-nitrogen-containing solution in a concentration lower than 60 mg/L; and gradually increasing the concentration of TMAH in the solution to be added into the reactor for several times whenever the denitrification efficiency reaches a steady state. Accordingly, the inhibition of TMAH to the anammox bacteria can be significantly decreased, and both TMAH and the ammonium nitrogen can be treated simultaneously. |
| format | Patent |
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| subjects | CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | Method and device for treating wastewater containing tetramethylammonium hydroxide and ammonium nitrogen |
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