Device and method for partial nitrosation of low carbon municipal sewage

A technology of urban sewage and nitrosation, applied in a new type of sewage biological denitrification technology, can solve the problem of insufficient carbon source for denitrification, achieve remarkable sustainability and economic benefits, short process flow, and reduce the cost of reclaimed water Effect
CN102786142AInactive Publication Date: 2012-11-21BEIJING UNIV OF TECH
0 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2012-11-21
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a device and a method for partial nitrosation of low carbon municipal sewage, belonging to the field of sewage treatment. The device is provided with a raw water tank, a plug flow partial nitrosation reactor and a vertical flow secondary sedimentation tank, wherein the plug flow partial nitrosation reactor is divided into four chambers, the first chamber, the second chamber and the fourth chamber are aerobic zones, and the third chamber is an anoxic zone. The method utilizing the device comprises the following steps: 1) putting nitrified sludge collected from a sewage plant into the partial nitrosation reactor; 2) domesticating the nitrified sludge with sludge digestion fluid by using the mode of SBR; 3) further domesticating the nitrified sludge with low carbon municipal sewage by using the SBR mode; and 4) shifting the mode to a continuous flow mode so as to realize partial nitrosation of the low carbon municipal sewage. The invention provides the method for partial nitrosation of low carbon municipal sewage at a normal temperature, and the method is simple to control and has high stability.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a new type of sewage biological denitrification technology, that is, the secondary effluent of the A / O (anaerobic / aerobic) phosphorus removal process is used as the raw water, and through the partial nitrosation process, about half of the ammonia nitrogen in the sewage is controlled to be oxidized to sub Nitrogen, and reduce the production of nitrate nitrogen as much as possible, provide suitable influent for the anaerobic ammonium oxidation (ANAMMOX) process of low-carbon urban sewage to achieve autotrophic denitrification, suitable for the treatment and reuse of low-carbon urban sewage. Background technique

[0002] Low C / N is a typical water quality characteristic of urban domestic sewage in my country. However, when most sewage plants rely on traditional nitrification and denitrification to denitrify, they face the problem of insufficient carbon sources and the competition for carbon sources between denitrification and phos...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More