Reactor for combined chemical-biological removal of nitrate nitrogen and ammonia nitrogen
A reactor and biological technology, applied in the field of reactors for chemical-biological combined removal of nitrate nitrogen and ammonia nitrogen, can solve the problems of inability to complete denitrification and the ineffectiveness of the Anammox process, and achieve the reduction of floating losses, efficient use of energy, and guarantees The effect of water quality
Active Publication Date: 2016-08-17
ZHEJIANG UNIV
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Problems solved by technology
[0004] However, for the control of wastewater containing nitrate and nitrogen at the same time, a single Anammox process is difficult to be effective
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[0026] like Figure 1-5 As shown, the chemical-biological joint removal of nitrate nitrogen and ammonia nitrogen reactor includes water distribution area A, short-range denitrification area B, anaerobic ammonium oxidation area C and separation area D from bottom to top; water distribution area from bottom to top There are mud discharge pipe 1 and return-water inlet pipe 2; the short-range denitrification area B is directly connected to the water distribution area A, and the lower end of the short-range denitrification area B is equipped with H 2 The air intake pipe 3 communicates with the composite porous ceramic catalytic column group 5, and a support frame 4 is arranged beside it to fix the composite porous ceramic catalytic column group 5, and the upper end is provided with a H 2 Circulation pipe 7, externally connected to H 2 Recovery pump 6 and with H 2 The intake pipe 3 is connected, the short-range denitrification zone B and the anammox zone C are connected by a flang...
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Abstract
The invention discloses a chemical-biological combined ammonium nitrogen and ammonia nitrogen removal reactor. The reactor is characterized in that a discharge pipeline and a backflow pipe-inlet pipe are arranged from down to up in a water distributing zone; a H2 air inlet pipe is arranged at lower end of a short distance denitrification zone, and is communicated to a composite porous ceramic catalysis column, a H2 circulating pipe is arranged at the upper end of the short distance denitrification zone, the short distance denitrification zone is connected to an anaerobic ammoxidation zone by a flange, a three-hole separator plate is arranged, and three liquid delivery tubes are arranged on the three-hole separator plate; a support sieve plate is arranged at bottom of the anaerobic ammoxidation zone, a mud obstructing sieve plate is arranged at upper part; the anaerobic ammoxidation zone is connected to a disengaging zone through the flange, a diplopore separator plate is arranged, a honeycomb duct and a mud guiding plate are respectively arranged on the plate; a mud discharge port, an overflow groove and a water outlet pipe are arranged on the sidewall of a disengaging zone in order from down to up, a double-effect three-phase separator is arranged at center of the disengaging zone, a back flow is arranged at sidewall of the central section, and a detachable liquid seal gas-collecting hood is arranged at top. The reactor has the advantages of fast reaction rate, high NO2<-> selectivity, and no requirement of additive carbon source, and the H2 circulating system is arranged for realizing high efficiency utilization of the resource.
Description
technical field [0001] The present invention relates to denitrification reactors. In particular, it relates to a chemical-biological combined reactor for removing nitrate nitrogen and ammonia nitrogen. Background technique [0002] According to the 2013 Bulletin on the State of the Environment in China, the discharge of ammonia nitrogen in wastewater reached 2.457 million tons. Lake "blooms" and offshore "red tides" frequently occur due to pollution, which have endangered agriculture, fishery, tourism and many other industries, and pose a serious threat to drinking water sanitation and food safety. Wastewater nitrogen discharge is an important cause of water eutrophication, and wastewater denitrification has become an urgent task for environmental protection. [0003] Compared with the traditional denitrification process, the anammox process has the advantages of high volumetric efficiency, low energy consumption for oxygen supply, less sludge production, and no need for a...
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IPC IPC(8): C02F9/14
Inventor 郑平厉巍陈俊杰王东豪李晨旭林潇羽
Owner ZHEJIANG UNIV