Method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with potassium dichromate method

Method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with potassium dichromate method

The invention discloses a method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with a potassium dichromate method, and belongs to the field of waste liquid treatment. The method is characterized in that a certain proportion of reducing salt is adopted t...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: CHU JIE, CHU YUEXI, ZHANG JUAN, NIE ZHONGJIE, LV JIANKUI, CHU YUEHAI
Format: Patent
Sprache:chi ; eng
Schlagworte:
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator CHU JIE
CHU YUEXI
ZHANG JUAN
NIE ZHONGJIE
LV JIANKUI
CHU YUEHAI
description The invention discloses a method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with a potassium dichromate method, and belongs to the field of waste liquid treatment. The method is characterized in that a certain proportion of reducing salt is adopted to react with the waste liquid into which an interference removing solvent is added; then alkali is added into the waste liquid and a precipitation reaction is conducted; and finally, the waste liquid stands still to precipitate, and a supernatant can be emitted up to standard after the pH (potential of hydrogen) value is regulated. The method has the advantages as follows: through using the interference removing solvent the utility model effectively solves the problems that high-concentration sulfuric acid in the waste liquid participates in the chemical reactions to produce SO2 to harm the physical health of an operator, and as SO42 minus ions in the waste liquid interferes following chemical reaction steps, the a
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_CN102583815A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>CN102583815A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_CN102583815A3</originalsourceid><addsrcrecordid>eNqNjb0KwkAQhNNYiPoOa6dFwBgCaSUqNmpjH467TbKQuz3vh2jvgxvFB7AahvmYb5q8zhg6VtCwg-BQBDItDMIHhJ7ukRRYxypKVKCi-4xs0p4MguxQkxQ98OPZogGFWhgFq-q6X48loNNkxj82MFDowHIQ3lPUoEh2jrUYHfprnyeTRvQeF7-cJcvj4VadUrRco7dCosFQV5dssy3KvMyKXf4P8wZ4NUrF</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with potassium dichromate method</title><source>esp@cenet</source><creator>CHU JIE ; CHU YUEXI ; ZHANG JUAN ; NIE ZHONGJIE ; LV JIANKUI ; CHU YUEHAI</creator><creatorcontrib>CHU JIE ; CHU YUEXI ; ZHANG JUAN ; NIE ZHONGJIE ; LV JIANKUI ; CHU YUEHAI</creatorcontrib><description>The invention discloses a method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with a potassium dichromate method, and belongs to the field of waste liquid treatment. The method is characterized in that a certain proportion of reducing salt is adopted to react with the waste liquid into which an interference removing solvent is added; then alkali is added into the waste liquid and a precipitation reaction is conducted; and finally, the waste liquid stands still to precipitate, and a supernatant can be emitted up to standard after the pH (potential of hydrogen) value is regulated. The method has the advantages as follows: through using the interference removing solvent the utility model effectively solves the problems that high-concentration sulfuric acid in the waste liquid participates in the chemical reactions to produce SO2 to harm the physical health of an operator, and as SO42 minus ions in the waste liquid interferes following chemical reaction steps, the a</description><language>chi ; eng</language><subject>CHEMISTRY ; METALLURGY ; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><creationdate>2012</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20120718&amp;DB=EPODOC&amp;CC=CN&amp;NR=102583815A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20120718&amp;DB=EPODOC&amp;CC=CN&amp;NR=102583815A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CHU JIE</creatorcontrib><creatorcontrib>CHU YUEXI</creatorcontrib><creatorcontrib>ZHANG JUAN</creatorcontrib><creatorcontrib>NIE ZHONGJIE</creatorcontrib><creatorcontrib>LV JIANKUI</creatorcontrib><creatorcontrib>CHU YUEHAI</creatorcontrib><title>Method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with potassium dichromate method</title><description>The invention discloses a method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with a potassium dichromate method, and belongs to the field of waste liquid treatment. The method is characterized in that a certain proportion of reducing salt is adopted to react with the waste liquid into which an interference removing solvent is added; then alkali is added into the waste liquid and a precipitation reaction is conducted; and finally, the waste liquid stands still to precipitate, and a supernatant can be emitted up to standard after the pH (potential of hydrogen) value is regulated. The method has the advantages as follows: through using the interference removing solvent the utility model effectively solves the problems that high-concentration sulfuric acid in the waste liquid participates in the chemical reactions to produce SO2 to harm the physical health of an operator, and as SO42 minus ions in the waste liquid interferes following chemical reaction steps, the a</description><subject>CHEMISTRY</subject><subject>METALLURGY</subject><subject>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2012</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjb0KwkAQhNNYiPoOa6dFwBgCaSUqNmpjH467TbKQuz3vh2jvgxvFB7AahvmYb5q8zhg6VtCwg-BQBDItDMIHhJ7ukRRYxypKVKCi-4xs0p4MguxQkxQ98OPZogGFWhgFq-q6X48loNNkxj82MFDowHIQ3lPUoEh2jrUYHfprnyeTRvQeF7-cJcvj4VadUrRco7dCosFQV5dssy3KvMyKXf4P8wZ4NUrF</recordid><startdate>20120718</startdate><enddate>20120718</enddate><creator>CHU JIE</creator><creator>CHU YUEXI</creator><creator>ZHANG JUAN</creator><creator>NIE ZHONGJIE</creator><creator>LV JIANKUI</creator><creator>CHU YUEHAI</creator><scope>EVB</scope></search><sort><creationdate>20120718</creationdate><title>Method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with potassium dichromate method</title><author>CHU JIE ; CHU YUEXI ; ZHANG JUAN ; NIE ZHONGJIE ; LV JIANKUI ; CHU YUEHAI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN102583815A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2012</creationdate><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</topic><toplevel>online_resources</toplevel><creatorcontrib>CHU JIE</creatorcontrib><creatorcontrib>CHU YUEXI</creatorcontrib><creatorcontrib>ZHANG JUAN</creatorcontrib><creatorcontrib>NIE ZHONGJIE</creatorcontrib><creatorcontrib>LV JIANKUI</creatorcontrib><creatorcontrib>CHU YUEHAI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>CHU JIE</au><au>CHU YUEXI</au><au>ZHANG JUAN</au><au>NIE ZHONGJIE</au><au>LV JIANKUI</au><au>CHU YUEHAI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with potassium dichromate method</title><date>2012-07-18</date><risdate>2012</risdate><abstract>The invention discloses a method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with a potassium dichromate method, and belongs to the field of waste liquid treatment. The method is characterized in that a certain proportion of reducing salt is adopted to react with the waste liquid into which an interference removing solvent is added; then alkali is added into the waste liquid and a precipitation reaction is conducted; and finally, the waste liquid stands still to precipitate, and a supernatant can be emitted up to standard after the pH (potential of hydrogen) value is regulated. The method has the advantages as follows: through using the interference removing solvent the utility model effectively solves the problems that high-concentration sulfuric acid in the waste liquid participates in the chemical reactions to produce SO2 to harm the physical health of an operator, and as SO42 minus ions in the waste liquid interferes following chemical reaction steps, the a</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language chi ; eng
recordid cdi_epo_espacenet_CN102583815A
source esp@cenet
subjects CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title Method for treating waste liquid produced during on-line chemical oxygen demand (COD) determination with potassium dichromate method
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-10T23%3A36%3A23IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=CHU%20JIE&rft.date=2012-07-18&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3ECN102583815A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true