Title:
METHOD FOR EFFICIENTLY TREATING NITROGEN-CONTAINING WASTEWATER BASED ON DNRA-ANAMMOX IMMOBILIZED PELLETS
Document Type and Number:
WIPO Patent Application WO/2020/192536
Kind Code:
A1
Abstract:
The present invention relates to a method for efficiently treating nitrogen-containing wastewater based on DNRA-Anammox immobilized pellets. The DNRA-Anammox immobilized pellets are formed by embedding DNRA bacteria and Anammox bacteria with a cross-linked polymerization product of polyvinyl alcohol, sodium alginate, and gelatinized starch as a carrier. The immobilized pellets used in the method of the present invention have the advantages of high biomass concentration, strong environmental toxicity resistance, recycling, and the like, and high bacterial concentration and bio-activity of the DNRA bacteria and Anammox bacteria in a system can be maintained, so that the total nitrogen removal rate of the system is increased. Both the DNRA bacteria and the Anammox bacteria are anaerobic bacteria, the DNRA-Anammox immobilized pellets block mass transfer of dissolved oxygen, so that the DNRA bacteria and Anammox bacteria in the DNRA-Anammox immobilized pellets are not easily affected by the dissolved oxygen, the stability of the system is enhanced, combined nitrogen removal is realized, and the total nitrogen removal rate of the system is increased.
Inventors:
NI SHOUQING (CN)
LI QIANXIA (CN)
DONG YING (CN)
ZHAN JINHUA (CN)
CUI ZHAOJIE (CN)
LI QIANXIA (CN)
DONG YING (CN)
ZHAN JINHUA (CN)
CUI ZHAOJIE (CN)
Application Number:
PCT/CN2020/080098
Publication Date:
October 01, 2020
Filing Date:
March 19, 2020
Export Citation:
Assignee:
SHAN DONG UNIV (CN)
International Classes:
C02F3/28; C02F3/34; C12N11/08; C02F101/16; C12R1/01
Foreign References:
| CN110078206A | 2019-08-02 | |||
| CN108795922A | 2018-11-13 | |||
| CN108328730A | 2018-07-27 |
Other References:
CASTRO-BARROS, C.M. ET AL.: "Evaluating the Potential for Dissimilatory Nitrate Reduction by Anammox Bacteria for Municipal Wastewater Treatment", BIORESOURCE TECHNOLOGY, vol. 233, 20 February 2017 (2017-02-20), XP029957878, ISSN: 0960-8524, DOI: 20200515091450Y
Attorney, Agent or Firm:
JINAN JINDI INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
Download PDF:
Previous Patent: DISTANCE MEASUREMENT METHOD AND ELECTRONIC DEVICE
Next Patent: NETWORK CARD SWITCHING METHOD AND ELECTRONIC DEVICE
Next Patent: NETWORK CARD SWITCHING METHOD AND ELECTRONIC DEVICE