Advanced nitrogen and phosphorus removal device for respectively coupling iron-carbon micro-electrolysis and endogenous denitrification with short-cut nitrification/anaerobic ammonia oxidation and method thereof

Abstract

The invention discloses an advanced nitrogen and phosphorus removal device for respectively coupling iron-carbon micro-electrolysis and endogenous denitrification with short-cut nitrification / anaerobic ammonia oxidation and a method thereof. The device comprises a raw water tank, an iron shaving unit, a phosphorus removal water outlet tank, a short-cut nitrification reactor, a short-cut nitrification water outlet tank and an endogenous denitrification coupling anaerobic ammonia oxidation reactor. According to the invention, coupling of iron-carbon micro-electrolysis and anaerobic ammonia oxidation is adopted to provide a new idea for solving the problem of slow proliferation of anaerobic ammonia oxidation bacteria during iron-carbon micro-electrolysis in the prior art, the iron-carbon micro-electrolysis system provides trace iron to enhance the activity of an anaerobic ammonia oxidation complex, and the starting of the anaerobic ammonia oxidation reactor is further accelerated; and efficient and stable operation of the anaerobic ammonia oxidation system is maintained.

Description

technical field [0001] The application belongs to the technical field of sewage biological treatment, and specifically relates to a device and method for deep nitrogen and phosphorus removal in which iron-carbon micro-electrolysis and endogenous denitrification are respectively coupled with short-range nitrification / anammox. Background technique [0002] Short-cut nitrification-anammox biological denitrification technology is a new type of high-efficiency, economical and energy-saving biological denitrification technology. Therefore, it is considered to be the most promising biological denitrification technology, and has good application prospects and commercial value. [0003] However, because the water quality and quantity of actual urban sewage fluctuate greatly with the seasons, and the organic matter composition is also relatively complex, even after pretreatment, it will still cause anammox bacteria and other heterotrophic bacteria in the spatial distribution or on the...

AI Technical Summary

Problems solved by technology

[0003] However, because the water quality and quantity of actual urban sewage fluctuate greatly with the seasons, and the organic matter composition is also relatively complex, even after pretreatment, it will still cause anammox bacteria and other heterotrophic bacteria in the spatial distribution or on the substrate matrix. Competition, which is not conducive to anammox bacteria becoming the dominant flora of the system

In addition, since the stability of the short-cut nitrification of urban sewage under low temperature conditions is still not guaranteed, it is easy to cause excessive proliferation of nitrite oxidizing bacteria, resulting in NO in the short-cut nitrification system. －3 is too high to provide suitable conditions for the growth of anammox bacteria Substrate Concentration Ratio Affects Nitrogen Removal Efficiency of Short-cut Nitrification-ANAMMOX Process

Images