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Anammox process reaction anammox (ANAMMOX), developed a new type of biological nitrogen removal process. This study is the start of the process of nitrate supply, inoculation sludge source and reactor, the following results were obtained: (1) granular sludge bed nitrifying reactor biological nitrification performance, can withstand high influent NH -N concentration (78.49mmol / L), with a high volume conversion efficiency (163.18mmol / L · d), stable operating performance (NH 4 removal of -N remains above 94.42%), can be used as a highly efficient biological nitrification reactor a new biological denitrification system of ANAMMOX reactor. (2), can occur in the nitrification reactor during the operation of the granular sludge bed in the role of nitrifying sludge particles. The granular sludge began about 45d, the particle size of the average for the 0.83mm settling velocity greater than 55.53m / h, ammonia oxidation activity 0.95mmol (NH 4 -N) / g (VS) · d. Good settling properties of granular sludge and strong ammonia oxidation activity, ensure the efficient running of the granular sludge bed nitrifying reactor. (3) the the nitrifying sludge inoculation biofilm ANAMMOX reactor, HRT for 1d, anaerobic running 40d, influent concentration of NH 4 -N 5.07mmol / L increased to 19.45mmol / L, the removal rate in more than 89%; the influent of NO 2 - -N concentration increased from 5.70mmol / L to 20.82mmol / L, the removal rate stabilized at 95%. Nitrification granular sludge inoculated granular sludge bed ANAMMOX reactor in HRT 1d conditions, anaerobic running for more than a month, NH water 4 -N concentration rose from 4.95mmol ╱ L 33.09mmol / L, corresponding removal efficiency of 98.37% and 72.02%; the influent of NO 2 - -N concentration from 5.35 mmol / L to 36.11mmol / L, corresponding to the removal rate of 100% and 82.44%. Tests show that it is feasible to use high active nitrification the sludge start ANAMMOX reactor. (4) ANAMMOX reactor has a high running performance and stability. Biofilm ANAMMOX reactor volume of ammonia removal efficiency 64.13mmol / L · d, volume removal rate of nitrite 83.27mmol / L · d, a TN removal 149.55mmol volume / L · d. Stable operation period, the average volume of ammonia loading rate, volume nitrite loading rate, the volume of total nitrogen loading rate were 45.96,43.01,85.72 mmol / L · d, the average volume of ammonia removal efficiency, volume nitrite removal rate The volume of total nitrogen removal rates 43.08,41.15,84.37 mmol / L d, NH ,, 4 -N average removal rate of 96.89%, NO 2 < / sub> - -N average removal rate of 99.67%. Particles the sludge bed ANAMMOX reactor largest volume of ammonia removal efficiency 68.86mmol / L · d, volume nitrite removal rate of 82.36mmol / L · d, the volume of total nitrogen removal 151.22mmol / L · d . Stable operation of the high-load period, the average volume of ammonia loading rate, volume nitrite loading rate, the volume of total nitrogen loading rates were 49.25,51.13, 100.38rnmol / L *, the average volume of ammonia removal efficiency, volume nitrite removal rate, the volume of total nitrogen removal were 47.82, sl. 13,98.951 Illllol few d N thirty N average removal rate of 97.170, NO. '-N removal efficiency reached 100O. Is) packing holders remain sludge or sludge, can effectively reduce the loss by cultivating anammox granular sludge, but the effect of the latter than the former good.
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