Fed-batch shortcut nitrification apparatus and technology thereof

Abstract

The invention discloses a strain fed-batch short distance nitration device and the technique thereof. The body of the technique comprises a two-stage nitrosomas seeding tank and a short distance nitration reactor. The two-stage nitrosomas seeding tank is operated by using imitation ammoniacal inorganic wastewater and used for producing fast grow nitrosomas group; the short distance nitration reactor is used for treating actual ammoniacal wastewater and increases the nitration function of the short distance with the help of strain fed-batch from the nitrosomas seeding tank. The invention has the advantages that the seeding tank is used for special culturing the fast grow nitrosomas, thus improving the quality of the strain and increasing the nitration potential of the short distance; the predicament that the nitrosomas can not dominate the advantage because of the limitation of water quality is broken away by the stain fed-batch, thus improving the stability of the short distance nitration; and the stain culture and the short distance nitration are separately carried out, thus simplifying the control of the course and the running operation.

Description

technical field [0001] The invention relates to a feeding type short-range nitrification device and its technology. Background technique [0002] Biological denitrification has become the mainstream technology for denitrification of wastewater all over the world. Currently popular biological nitrogen removal technologies include nitrification and denitrification process, oxygen-limited autotrophic nitrification and denitrification process (OLAND process), nitrite-based fully autotrophic nitrogen removal process (CANON process), short-cut nitrification and denitrification process ( SHARON process) and short-cut nitrification anaerobic ammonium oxidation process (SHARON-ANAMMOX process), etc. Among them, the short-range nitrification process (SHARON process) is the basis and necessary link of many new biological denitrification processes, and has broad application prospects. [0003] The basic principle of the short-cut nitrification process is to limit the nitrification pro...

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Problems solved by technology

The reason is mainly that in actual wastewater, ammonia often coexists with organic matter, and the competition ability of nitrous bacteria for dissolved oxygen and nutrients is weaker than that of heterotrophic bacteria, so it is difficult to occupy a dominant position and function; at the same time, the actual wastewater quality There is a certain range of fluctuations, and physical and chemical factors (such as dissolved oxygen, pH, alkalinity) are also difficult to control

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