Treatment method for etching waste water containing fluorine and ammonium
The invention discloses a treatment method for etching waste water containing fluorine and ammonium. The method comprises the following steps that (1) ammonium bicarbonate is added into the waste water, after a reaction is finished, solid-liquid separation is conducted, and tail gas is absorbed by w...
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creator | ZHOU HUANHUAN CHEN QI FANG WEN ZHANG YIGEN |
description | The invention discloses a treatment method for etching waste water containing fluorine and ammonium. The method comprises the following steps that (1) ammonium bicarbonate is added into the waste water, after a reaction is finished, solid-liquid separation is conducted, and tail gas is absorbed by water; (2) after the solid-liquid separation, a filtrate and the water absorbing the tail gas in thestep (1) are concentrated through a reverse osmosis system, and fresh water and concentrated water are prepared; (3) after the solid-liquid separation, a solid obtained in the step (1) is washed withthe fresh water in the step (2) and dried, white carbon black is obtained, and washing water is circulated to reverse osmosis treatment; (4) the white carbon black in the step (3) is added into the concentrated water in the step (2), then boric acid is added, the mixture is stirred and mixed uniformly, and a temperature preservation reaction, filtering and drying are conducted; (5) after drying, asolid obtained in the step |
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The method comprises the following steps that (1) ammonium bicarbonate is added into the waste water, after a reaction is finished, solid-liquid separation is conducted, and tail gas is absorbed by water; (2) after the solid-liquid separation, a filtrate and the water absorbing the tail gas in thestep (1) are concentrated through a reverse osmosis system, and fresh water and concentrated water are prepared; (3) after the solid-liquid separation, a solid obtained in the step (1) is washed withthe fresh water in the step (2) and dried, white carbon black is obtained, and washing water is circulated to reverse osmosis treatment; (4) the white carbon black in the step (3) is added into the concentrated water in the step (2), then boric acid is added, the mixture is stirred and mixed uniformly, and a temperature preservation reaction, filtering and drying are conducted; (5) after drying, asolid obtained in the step</description><language>chi ; eng</language><subject>CHEMISTRY ; COMPOUNDS THEREOF ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; TRANSPORTING ; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><creationdate>2019</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&date=20190809&DB=EPODOC&CC=CN&NR=110104842A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190809&DB=EPODOC&CC=CN&NR=110104842A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZHOU HUANHUAN</creatorcontrib><creatorcontrib>CHEN QI</creatorcontrib><creatorcontrib>FANG WEN</creatorcontrib><creatorcontrib>ZHANG YIGEN</creatorcontrib><title>Treatment method for etching waste water containing fluorine and ammonium</title><description>The invention discloses a treatment method for etching waste water containing fluorine and ammonium. The method comprises the following steps that (1) ammonium bicarbonate is added into the waste water, after a reaction is finished, solid-liquid separation is conducted, and tail gas is absorbed by water; (2) after the solid-liquid separation, a filtrate and the water absorbing the tail gas in thestep (1) are concentrated through a reverse osmosis system, and fresh water and concentrated water are prepared; (3) after the solid-liquid separation, a solid obtained in the step (1) is washed withthe fresh water in the step (2) and dried, white carbon black is obtained, and washing water is circulated to reverse osmosis treatment; (4) the white carbon black in the step (3) is added into the concentrated water in the step (2), then boric acid is added, the mixture is stirred and mixed uniformly, and a temperature preservation reaction, filtering and drying are conducted; (5) after drying, asolid obtained in the step</description><subject>CHEMISTRY</subject><subject>COMPOUNDS THEREOF</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>TRANSPORTING</subject><subject>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2019</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNisEKwjAQBXPxIOo_rB8gNNqD11IUvXjqvSzpiw00m5Js8fdV8AO8zMAwa3PvMlgjRClCxzSQT5mgbgzypBcXxYeKTC6JcpBv9tOSchAQy0AcY5KwxK1ZeZ4Kdj9vzP566drbAXPqUWZ2EGjfPqytbFWf62Nz-ud5AxM_NQM</recordid><startdate>20190809</startdate><enddate>20190809</enddate><creator>ZHOU HUANHUAN</creator><creator>CHEN QI</creator><creator>FANG WEN</creator><creator>ZHANG YIGEN</creator><scope>EVB</scope></search><sort><creationdate>20190809</creationdate><title>Treatment method for etching waste water containing fluorine and ammonium</title><author>ZHOU HUANHUAN ; CHEN QI ; FANG WEN ; ZHANG YIGEN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN110104842A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2019</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS THEREOF</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>TRANSPORTING</topic><topic>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</topic><toplevel>online_resources</toplevel><creatorcontrib>ZHOU HUANHUAN</creatorcontrib><creatorcontrib>CHEN QI</creatorcontrib><creatorcontrib>FANG WEN</creatorcontrib><creatorcontrib>ZHANG YIGEN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ZHOU HUANHUAN</au><au>CHEN QI</au><au>FANG WEN</au><au>ZHANG YIGEN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Treatment method for etching waste water containing fluorine and ammonium</title><date>2019-08-09</date><risdate>2019</risdate><abstract>The invention discloses a treatment method for etching waste water containing fluorine and ammonium. The method comprises the following steps that (1) ammonium bicarbonate is added into the waste water, after a reaction is finished, solid-liquid separation is conducted, and tail gas is absorbed by water; (2) after the solid-liquid separation, a filtrate and the water absorbing the tail gas in thestep (1) are concentrated through a reverse osmosis system, and fresh water and concentrated water are prepared; (3) after the solid-liquid separation, a solid obtained in the step (1) is washed withthe fresh water in the step (2) and dried, white carbon black is obtained, and washing water is circulated to reverse osmosis treatment; (4) the white carbon black in the step (3) is added into the concentrated water in the step (2), then boric acid is added, the mixture is stirred and mixed uniformly, and a temperature preservation reaction, filtering and drying are conducted; (5) after drying, asolid obtained in the step</abstract><oa>free_for_read</oa></addata></record> |
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subjects | CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
title | Treatment method for etching waste water containing fluorine and ammonium |
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