Biofilm-electrode process based on autohydrogentrophic denitrification and its advantages were elaborated,with the electrode material,disposal of the process,factors influencing the treatment effect and some other aspects of the said technology emphatically analyzed.

The effect of substrate concentration on hydrogenotrophic denitrification was discussed,and the result showed that the denitrification activity was significantly inhibited at nitrate concentration more than 150 mg NO3--N·L-1,and the nitrate could be completelyreduced in 21h with initial biomass 25 mg·L-1at the nitrate concentration lower than 100 mg NO3--N·L-1.

Nitrate nitrogen removal from ground water by autotrophic denitrification in a packed bed reactor;

The mechanisms and effects of ACF electrode were introduced in the aspects of treatment of refractory organics in water,synchronous enhanced autotrophic denitrification and other advanced treatment.

Results After having been acclimated in two stages, mixotrophic and autotrophic denitrification stages, the denitrifying bac.

A new process for biological treatment of nitric wastewater——nitrous nitrifying/ autotrophic denitrifying process;

The best advantage of the biological nitrous nitrifying/ Autotrophic denitrifying in this dissertation is that no silicon source is needed in the process of biological nitrogen removal, this can save energy and reactor volume、simplify treatment process、reduce occupied aerea, especially the low C/N wastewater.

The start-up performance of anaerobic ammonia oxidation reactors was investigated by inoculating with aerobic nitrifying sludge and autotrophic denitrifying sludge in two sets of anaerobic sequencing batch reactors(ASBR).