Removal of particulate organic matter and no 2 - Apparatus and methods for -n output

Abstract

Removal of particulate organic matter and NO based on hydrolytic acidification coupled with short-range denitrification technology 2 ‑ The device and method produced by ‑N belong to the field of sewage biological treatment. The device includes a particulate organic waste water tank, NO 3 ‑ ‑N wastewater tank, single-stage hydrolysis acidification coupling short-cut denitrification SBR reactor, effluent tank. Using the residual sludge from the sewage plant as the seed sludge, the hydrolytic acidifying bacteria in the seed sludge in the anaerobic section hydrolyze and acidify the particulate organic matter into small molecular organic substances; the denitrifying bacteria in the seed sludge in the anoxic section use the small molecular organic substances produced as electron donors Will NO 3 ‑ ‑N reverts to NO 2 ‑ -N. By gradually increasing influent organic matter and NO 3 ‑ ‑N load strengthens the enrichment culture of hydrolytic acidification bacteria and short-term denitrification bacteria, and finally realizes the removal of particulate organic matter and NO 2 ‑ ‑N output. The invention does not need an external carbon source, and the control is simple, which solves the problem that the particulate organic matter is not conducive to the NO in the denitrification process. 2 ‑ ‑N stable accumulation and technical problems of short-range denitrification bacteria enrichment.

Description

technical field [0001] The short-range denitrification technology based on hydrolysis acidification coupled with the present invention realizes the removal of particulate organic matter and the removal of nitrous (NO 2 - -N) The device and method of output belong to the technical field of sewage biological treatment, and are a method for solving the problem of particulate organic matter being unfavorable for NO in the denitrification process. 2 - -N stable accumulation and short-range denitrifying bacterial species enrichment method of technical difficulties. Background technique [0002] Anammox autotrophic denitrification technology (Anammox) is by far the most economical and effective biological denitrification method. Compared with the traditional nitrification and denitrification biological denitrification process, Anammox can save 60% of aeration and 100% of organic carbon At the same time, this process can greatly reduce the production of sludge and the emission of...

AI Technical Summary

Problems solved by technology

Using the residual sludge from sewage plants as seed sludge, using anaerobic hydrolysis acidification coupled with short-range denitrification technology to solve the problem that particulate organic matter is not conducive to NO in the denitrification process. 2 - -The technical problems of stable accumulation of N and enrichment of short-range denitrifying bacteria, while making full use of the raw water carbon source, provide stable NO for the large-scale application of anammox autotrophic denitrification technology in mainstream sewage plants 2 - -N source

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