几种新型生物脱氮工艺的简介与比较

Pollution caused by nitrogen in water is more and more serious. The traditional biological nitrogen removal process has played an important role in wastewater denitrification. But it also has disadvantages of high cost and low efficiency. With the development of nitrous nitrification-denitrification technology and anaerobic ammonium oxidation technology, new biological nitrogen removal processes has attracted great attention gradually. The paper discusses several new biological nitrogen removal processes, including single reactor for high ammonia removal over nitrite process (SHARON), anaerobic ammonium oxidation process (ANAMMOX), SHARON and ANAMMOX combined process, completely autotrophic ammonium removal over nitrite process (CANON) and oxygen limited autotrophic nitrification denification process(OLAND). The principle, influence factor, characteristic and application of the technology are elaborated. The ending of paper gives the difference and relation of the processes. And the manipulation parameter of the processes are also generalized and made a comparison.