Title:
BACKFLOW UNIT AND SEWAGE TREATMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/245897
Kind Code:
A1
Abstract:
Provided in the present invention are a backflow unit and a sewage treatment system. The backflow unit comprises an input section, a treatment section and an output section, which are in communication in sequence, wherein the treatment section is used for carrying out a deoxidation treatment on a backflow substance, which is input by means of the input section; and the treatment section is at least partially located above an aeration port of an aeration apparatus, or the treatment section is arranged on a surface of the aeration apparatus in an attached manner. Since the input section, the treatment section and the output section are in communication in sequence, a backflow substance is input into the treatment section along the input section; the treatment section carries out a deoxidation treatment on the backflow substance, which is input by means of the input section; and the backflow substance, which has been subjected to the deoxidation treatment, flows to the output section, and is output by the output section into an anaerobic tank, such that the backflow substance, which has been subjected to the deoxidation treatment by the treatment section and which enters the anaerobic tank, has a relatively low dissolved oxygen (DO) concentration, thereby avoiding the increase of DO content in the anaerobic tank. Therefore, high DO affecting the release of phosphorus-accumulating bacteria in the anaerobic tank and the denitrification of NOx-N is prevented, and the nitrogen and phosphorus removal effect of the anaerobic tank is improved, such that the treatment effect in the anaerobic tank is relatively good.
Inventors:
YU HAIJUN (CN)
LI AIXIA (CN)
XIE YINGHAO (CN)
LI CHANGDONG (CN)
LI AIXIA (CN)
XIE YINGHAO (CN)
LI CHANGDONG (CN)
Application Number:
PCT/CN2022/122273
Publication Date:
December 28, 2023
Filing Date:
September 28, 2022
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP EV RECYCLING CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP EV RECYCLING CO LTD (CN)
International Classes:
C02F9/14
Foreign References:
| CN110217939A | 2019-09-10 | |||
| CN109942086A | 2019-06-28 | |||
| CN108341560A | 2018-07-31 | |||
| CN211111605U | 2020-07-28 | |||
| CN113264586A | 2021-08-17 | |||
| CN110015756A | 2019-07-16 | |||
| CN212609804U | 2021-02-26 | |||
| JP2010125361A | 2010-06-10 | |||
| CN110054361A | 2019-07-26 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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