Title:
COD ONLINE MEASUREMENT METHOD, AND DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/022857
Kind Code:
A1
Abstract:
Provided are a COD online measurement method and device, wherein same measure the COD of sewage by combining an ORP and an electrolytic oxidant, that is, a change in the ORP value of a water sample to be tested is measured by oxidizing organic matters in the water sample to be tested, such that the COD value in the water sample to be tested can be quickly measured without the need to determine the consumption amount of a reactant through titration as in a traditional mode. The reading of the ORP is fast, and fast reading and online measurement can be achieved at the same time. A series of operations, such as data acquisition, calculation, and the addition of an oxidant, in a COD measurement process can be performed without human participation, and the COD value of sewage can be automatically measured online. The corresponding COD online measurement device has a simple structure, is easily operated and has low maintenance costs, and is free of other chemical titrants and calibration agents, thereby reducing secondary pollution and being more environmentally friendly.
Inventors:
ZHONG JIANHUA (CN)
ZHANG WENYING (CN)
PAN YUFU (CN)
ZHONG ZHUOPENG (CN)
ZHANG WENYING (CN)
PAN YUFU (CN)
ZHONG ZHUOPENG (CN)
Application Number:
PCT/CN2020/089490
Publication Date:
February 11, 2021
Filing Date:
May 09, 2020
Export Citation:
Assignee:
GUANGDONG SHANGZHI ENVIRONMENTAL PROTECTION TECH CO LTD (CN)
International Classes:
G01N27/416; G01N33/18
Foreign References:
| CN110441376A | 2019-11-12 | |||
| CN101625353A | 2010-01-13 | |||
| CN203653364U | 2014-06-18 | |||
| CN103399134A | 2013-11-20 | |||
| KR101777775B1 | 2017-09-12 |
Other References:
ZHU YUEFEI: "Design of Automatic Monitoring System for Continuous Advanced Treatment Process of Papermaking Wastewater And Development of Soft-sensing Models for COD", CHINESE MASTER'S THESES FULL-TEXT DATABASE, no. 2, 22 April 2016 (2016-04-22), pages 1 - 97, XP055777576, ISSN: 1674-0246
GAO DAWEN: "Correlation of ORP and COD in SBR Process Treating Soybean Processing Wastewater", WATER & WASTEWATER ENGINEERING, vol. 28, no. 9, 20 September 2002 (2002-09-20), pages 40 - 43+0, XP055777584, ISSN: 1002-8471, DOI: 10.13789/j.cnki.wwe1964.2002.09.014
GAO DAWEN: "Correlation of ORP and COD in SBR Process Treating Soybean Processing Wastewater", WATER & WASTEWATER ENGINEERING, vol. 28, no. 9, 20 September 2002 (2002-09-20), pages 40 - 43+0, XP055777584, ISSN: 1002-8471, DOI: 10.13789/j.cnki.wwe1964.2002.09.014
Attorney, Agent or Firm:
GAUNGZHOU SHIDAI INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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