A treatment system and treatment method for low-carbon high-ammonia-nitrogen wastewater

Through the combined process of hydrolysis acidification tank, nitrification/anaerobic ammonium oxidation/denitrification chamber and aerobic MBR tank, the problems of large footprint and high energy consumption of anaerobic ammonium oxidation process in sewage treatment are solved, and efficient removal of total nitrogen and organic matter is achieved, saving energy and simplifying the process flow.

CN117756290BActive Publication Date: 2025-10-21ZHEJIANG SHUANGYI ENVIRONMENTAL PROTECTION TECH DEV +1
1 Cites 0 Cited by

Patent Information

Application Number
CN202410165771.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-02-05
Publication Date
2025-10-21
Estimated Expiration
2044-02-05

AI Technical Summary

Technical Problem

The existing anaerobic ammonium oxidation process in sewage treatment has problems with anaerobic ammonium oxidation bacteria retention and short-range nitrification stability, which leads to an increase in treatment steps, large floor space and high energy consumption, making it difficult to be widely used in engineering.

Method used

A combined process of hydrolysis acidification tank, nitrification/anaerobic ammonium oxidation/denitrification chamber and aerobic MBR tank is adopted. By controlling the hydraulic retention time, dissolved oxygen and reflow ratio, the simultaneous nitrification, anaerobic ammonium oxidation and denitrification reactions are achieved. The three-dimensional elastic filler and wire mesh corrugated sheet are used to enrich the bacteria and prevent sludge swelling and loss.

Benefits of technology

Efficiently remove total nitrogen and organic matter, save aeration and energy, simplify process flow, reduce floor space, and stabilize the growth and enrichment of anaerobic ammonia-oxidizing bacteria.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application provides a treatment system and method for low-carbon high-ammonia-nitrogen wastewater, which comprises a hydrolysis acidification tank, a nitritation / anaerobic ammonia oxidation / denitrification chamber and an aerobic MBR tank connected in sequence; the hydrolysis acidification tank is provided with a wastewater inlet, and is connected with the bottom of the nitritation reaction zone; the aerobic MBR tank is provided with a water outlet connected with the outside; the nitritation / anaerobic ammonia oxidation / denitrification chamber comprises two parts separated by a partition, the inside is the nitritation reaction zone, and the outside is the anaerobic ammonia oxidation and denitrification reaction zone, and the water flow can pass through the top of the partition. The application controls the aeration amount of the MBR aeration tank and the reflux ratio, controls the dissolved oxygen of the nitritation / anaerobic ammonia oxidation / denitrification chamber in the required range, stably creates the environment required for nitritation and anaerobic ammonia oxidation, simultaneously performs the nitritation, anaerobic ammonia oxidation and denitrification reaction in the integrated anaerobic ammonia oxidation tank, removes total nitrogen and part of organic matters, can not only efficiently remove total nitrogen and organic matters, but also save the aeration amount and energy.
Need to check novelty before this filing date? Find Prior Art