Intensified denitrification MBR (membrane bioreactor) sustainable biological nitrogen removal device and method

Abstract

The invention relates to the technical field of sewage biological denitrification and discloses an intensified denitrification MBR (membrane bioreactor) sustainable biological nitrogen removal devicewhich comprises a stirrer, wherein the stirrer is arranged in the center of a biological tank; a floating ball valve is arranged at the top of the biological tank; a water distribution box is connected with a high-level water tank through a pipeline; a water outlet is formed in the bottom of the high-level water tank and is connected with the floating ball valve; the biological tank is isolated from an MBR membrane tank through a through hole partition plate; a hollow fiber membrane component is arranged in the MBR membrane tank; the upper end of the hollow fiber membrane component communicates with a water generation tank through a pipeline with a water generation pump; and the upper end of the hollow fiber membrane component communicates with a chlorine chemical tank through a pipeline with a chlorine chemical backwash pump. Through intensification of the MBR membrane upon the denitrification biological nitrogen removal device, the nitrogen removal performance can be intensified, thesecondary treatment tail water TN (total nitrogen) index qualification rate of a city sewage plant can be increased, a carbon-nitrogen ratio, on-line generated water backwash and on-line chlorine chemical backwash can be optimized while the nitrogen removal effect is ensured, pollution of the MBR membrane is controlled, the working time of the membrane can be prolonged, and the operation cost canbe lowered while standard meeting of generated water is ensured.

Description

technical field [0001] The invention relates to the technical field of sewage biological denitrification, in particular to an enhanced denitrification MBR sustainable biological denitrification device and method. Background technique [0002] With the rapid development of my country's economy and population growth, the deterioration of water quality and the destruction of water ecosystems have become increasingly prominent. Among them, the eutrophication of slow-flowing water caused by nitrogen has intensified, and the situation of water pollution has not been effectively controlled. As the country's nitrogen emission limit standards become increasingly stringent. Most of the sewage treatment plants now face the problem of insufficient carbon sources in the influent, resulting in insufficient denitrification and poor denitrification effect in the existing biological denitrification process, resulting in excessive nitrate nitrogen, resulting in secondary treatment of tail wat...

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Problems solved by technology

[0005] In view of the shortcomings of the above-mentioned background technology, the present invention provides an enhanced denitrification MBR sustainable biological denitrification device and method, which has the advantages of optimizing the carbon-nitrogen ratio and online membrane backwashing, and solves the problem of TN in the secondary treatment of sewage plants. Compliance issues

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