Inactivated sludge-based anaerobic ammonium oxidation rapid enhancement starting method

Abstract

The invention relates to an inactivated sludge-based anaerobic ammonium oxidation rapid enhancement starting method. The method comprises the following steps: feeding deactivated sludge and active anaerobic ammonium oxidation sludge into a reaction area of an upflow type anaerobic reactor and evenly mixing, wherein the mass ratio of the active anaerobic ammonium oxidation sludge to deactivated sludge (unit: g / kg) is (0.5-1.8):1; introducing to-be-treated waste water from the bottom of the upflow type anaerobic reactor by utilizing a peristaltic pump, so that the hydraulic retention time of the to-be-treated waste water in the upflow type anaerobic reactor lasts for 10 to 48 hours; and successfully starting anaerobic ammonium oxidation reaction of sludge after the upflow type anaerobic reactor runs for 40-70 days, thus realizing the high-efficiency removal of nitrogen in sewage. By utilizing the method, the starting time of the anaerobic ammonium oxidation technology can be effectively shortened, and the enrichment speed of anaerobic ammonium oxidation bacteria can be obviously accelerated; the starting time of the upflow type anaerobic reactor can be shortened by 9.3%; and after running for 200 days, the enrichment quantity of anaerobic ammonium oxidation bacteria in the upflow type anaerobic reactor inoculated with deactivated anaerobic granular sludge and active anaerobic ammonium oxidation sludge can be increased by 40.9%.

Description

technical field [0001] The invention relates to a quick and intensified start-up method for anaerobic ammonium oxidation based on inactivated sludge, belonging to the field of wastewater biological treatment. Background technique [0002] The traditional sewage treatment process (nitrification-denitrification process) cannot meet the high-standard sewage denitrification requirements due to high energy consumption, large floor area, low denitrification efficiency, and the need for additional organic carbon sources. The new sewage denitrification process Development and research have become research hotspots in the field of water environment protection in various countries. Anaerobic ammonium oxidation process is a new type of denitrification process that has developed vigorously in recent years. This process means that under anaerobic or anoxic conditions, anammox microorganisms use nitrite nitrogen as an electron acceptor to directly convert ammonia nitrogen into nitrogen g...

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Problems solved by technology

[0003] However, the growth of anammox bacteria is slow, the generation time is usually as long as 11 days, and the environmental conditions required for survival are very harsh, and the enrichment is extremely difficult, which leads to a long start-up period of the anammox process and restricts the anammox process. The engineering application of the process makes this technology basically in the stage of laboratory theoretical research and less industrial application.

In addition, at present, the enrichment of anammox bacteria generally adopts the form of inoculated activated sludge culture. During the enrichment culture process, the competition of coexisting bacteria hinders the transformation speed of anammox bacteria to dominant bacterial genera, which is very large. Reduced the start-up speed of the anammox process to a certain extent

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