The invention discloses a high-efficiency
denitrification device and method capable of self-strengthening release of a
solid carbon source. The device comprises a water distribution and
sludge discharge device, a reaction device and a three-phase separation device which are sequentially communicated from bottom to top, an anaerobic
ammonia oxidation zone, an inner three-phase separation zone, an inner water distribution zone and a short-range
denitrification zone are sequentially arranged in the reaction device from bottom to top.
Ammonia nitrogen and
nitrite nitrogen in
wastewater are removed through the anaerobic
ammonia oxidation zone, then the
wastewater is separated in the inner three-phase separation zone, gas is accumulated through the gas collection device and then is subjected to pulse
gas release in the short-
cut denitrification zone, and liquid enters the short-
cut denitrification zone through the inner water distribution zone; the short-
cut denitrification zone is provided with a
solid carbon source, and power generated by pulse
gas release can promote flow state disturbance and release of the
solid carbon source;
nitrate nitrogen of the
wastewater is converted into
nitrite nitrogen through the short-cut denitrification region, and the
nitrite nitrogen flows back to the anaerobic
ammonia oxidation region. According to the invention, all reaction characteristics are fully utilized, the release efficiency of the
solid carbon source is enhanced by adopting self-produced gas disturbance, the function cooperation of short-cut denitrification and anaerobic ammonia oxidation processes is improved, and efficient and economic biological denitrification is realized.