Chidzidzo Chekuedza paMarapirwo eMarapirwo eCyanide-Yakashata Liquid mumugodhi weGoridhe

ziviso

Muindasitiri yekuchera goridhe, kurapwa kwemvura isina cyanide kwakakosha zvikuru. Mvura isina cyanide, senge mushonga mushure mekubviswa kwegoridhe mukuita kwecyanidation, ine zvinhu zvakasiyana-siyana zvinosvibisa, kunyanya makemikari ecyanide, izvo zvinogona kukonzera kusvibiswa kwakakomba kwezvakatipoteredza kana zvikasabatwa zvakanaka. Nokudaro, kugadzira nzira dzinoshanda uye dzisingadhuri dzekurapa mvura isina cyanide ibasa rekukurumidzira. Iyi blog post inotarisa pakudzidza kwekuyedza nzira dzekurapa mvura isina cyanide mune imwe mugodhi wegoridhe , nechinangwa chekupa ruzivo rwakakosha uye mareferensi kune indasitiri.

Mhedziso yeCyanide-Murombo Liquid Kurapa Nzira

Kazhinji, nzira dzekurapa dzecyanide-yakashata mvura inogona kukamurwa kuita zvikamu zviviri: nzira dzekuchenesa uye nzira dzekudzoreredza (zvekuzvarwa patsva).

Kuchenesa Nzira

1.Alkali-Chlorine Oxidation Method

• Iyi inzira yakakura yekuparadza cyanides mumvura yakasviba uye inoshandiswa zvakanyanya muzvimiti zvinoputira electroplating, coking plants, uye gold smelting plants. Pasi pe pH 11 - 12. Cyanides uye metal complex ions mumvura yakasviba ine cyanide zvinosanganiswa kuita cyanates, uye chlorine inowedzerwa kechipiri kuti isanganiswe muCarbon dioxide , nitrogen, nezvimwewo.

• Zvakanakira : Maitiro acho akura, ane mhedzisiro yakanaka yekurapa uye kushandiswa kwakakura. Maitiro ekurapa anogona kuitwa otomatiki zviri nyore.

• Zvakashata : Cyanides haigone kudzokororwa, mutengo wekurapa wakakwira, uye haigone kubvisa iron-cyanide complexes. Kunewo dambudziko rekusvibiswa kwechipiri.

2.Sulfur Dioxide - Air Oxidation Method

• Mumudziyo wakamutswa, iyo tsvina inowedzerwa, uye mhepo uye SO₂ (mvura kana gasi, kana sulfite solution, kana inowanikwa nekupisa elemental sulfur) inounzwa. Iyo pH inodzorwa pa 7 - 10. uye lime inoshandiswa kuita neutralize asidhi inogadzirwa panguva yekuita oxidation. Kuita kunoda kuvepo kwemhangura inonyungudika (sechinhu chinokonzeresa).

• Iyo Inco - SO₂/air oxidation nzira inogona kuora macyanides ese, kusanganisira iron-cyanides, uye iron-cyanides inogona kudonha uye kubviswa uchishandisa mamwe akachengeteka uye asingadhure reagents.

3.Hydrogen Peroxide Method

• Iyi nzira yakakodzera kurapa yakaderera - concentration cyanide-ine tsvina yemvura. Hydrogen peroxide inogona kuita oxidize cyanide mumiswe kuita isina kusimba uye nyore hydrolyzed cyanic acid (HCNO), iyo inozobviswa nekuwedzera oxidation uye hydrolysis.

4.Ozone Oxidation Method

• Ozone inhengo yakasimba yeoxidizing. Kana ichishandiswa kurapa cyanide-ine tsvina yemvura, yakazara kupfuura iyo alkali-chlorine oxidation nzira, ine nani cyanide yekubvisa mhedzisiro. Mushure me ozonation, iyo okisijeni yakanyungudika mumhinduro yemvura yetsvina inowedzera, iyo inogona kudzoserwa kune cyanidation system yekudzokorodza, kufambisa kuparara kwegoridhe nekuvandudza kugona kwegoridhe leaching.

• Zvakanakira : Kushanda kwacho kuri nyore uye kuri nyore, kuri nyore kudzora, uye mwero wekugadzira otomatiki wakakwira. Ozone inogona kugadzirwa panzvimbo yacho, izvo zvakakosha zvikuru kumafekitori ekugadzira cyanidation asina kutakurwa zvakanaka asi magetsi akakwana. Kushanda zvakanaka kwekuchenesa kwakakwira, uye hapana kusvibiswa kwechipiri kunogadzirwa.

• Zvakashata : Simba rinoshandiswa pakugadzira ozone rakakura, uye mutengo wekugadzira wakakwira, izvo zvinoderedza kushandiswa kwayo zvakanyanya.

5.Electrolytic Oxidation Method

• Pamberi pe electrolysis, tanga wagadzirisa pH ye cyanide-yakashata mvura kusvika> 7. wedzera munyu mushoma, shandisa graphite seanode uye titanium ndiro se cathode, uye shandisa alkaline mhangura - zinc aqueous solution se electrolyte. Kana yakananga ikozvino yakapfuura, simbi mhangura uye zingi zvinogadzirwa pane cathode, uye hydrogen inogadzirwawo. Paanode, CN⁻ inoiswa oxidized muCNO⁻, CO₂, N₂, uye Cl⁻ inoiswa muCl₂, uye Cl₂ inopinda mumhinduro kugadzira HClO.

6.Microbial Oxidation Method

• Iyi nzira inoshandisa biochemical properties yemicroorganisms kuti iparadze cyanides, thiocyanates, uye iron-cyanides, ichigadzira ammonia, carbon dioxide, uye sulfates, kana hydrolyzing cyanides kuita formamide. Panguva imwecheteyo, mabhakitiriya adsorb heavy metal ions, zvichiita kuti adonhe ne biofilm uye abviswe.

• Chinhu Chinokosha : Tembiricha inofanira kuchengetedzwa pamusoro pe10℃ nguva dzese kuti irambe iine chiyero chakakwana chekubvisa cyanide.

Kudzorera (Regeneration) Nzira

1.Acidification Method

• Nheyo huru yeiyi nzira ndeyekuwedzera sulfuric acid kune cyanide-ine tsvina yemvura, gadzirisa pH kusvika 1.5. uye shandura CN⁻ kuita HCN. Gasi rakapukunyuka reHCN rinopinzwa mumudziyo wekunyudza uye rinotorwa nealkaline solution (sodium hydroxide kana calcium hydroxide solution) kuti riwane 20% - 30% cyanide solution, inogona kushandiswazve.

• Zvakanakira : Maitiro aya anogona kuwedzera kudzoreredzwa kwecyanides, kuwedzera mwero wekushandiswa kwakanaka kwecyanides, uye kuderedza mari yekugadzira.

• Zvakashata : Mari yekudyara kamwe chete yakakura, kufamba kwenzira yacho kwakaoma, uye zvinonetsa kuti mvura yasara ine cyanide yakarapwa isangane nezvinodiwa pakuburitsa mvura.

2.Ion Exchange Method

• Mukurapa kwecyanide-yakashata mvura, ion exchange resin inogona kushandiswa kupfumisa cyanides.

3.Adsorption Method

• Kunyudzwa kweKabhoni Inoshandiswa : Kunyudzwa kweKabhoni Inoshandiswa kunonyanya kuenderana nemaburi akawanda emukati mayo nenzvimbo yakakura chaiyo. Maitiro ekunyudzwa anosanganisira kunyudzwa kwemuviri uye kunyudzwa kwemakemikari. Kubviswa kwecyanide kunonyanya kuita nzira nhatu: oxidation, hydrolysis, uye stripping. Maitiro makuru ndeyekunyudzwa kwecyanides mumvura ine cyanide ine hydrogen peroxide pamusoro pekabhoni inoshandiswa.

4.Solvent Extraction Method

• Solvents inoshandiswa kubvisa zvakakosha zvinhu uye cyanides kubva kune cyanide-varombo mvura.

5.Liquid Membrane Method

• Mukurapa kwecyanide-yakashata mvura, mafuta - in - mvura system inonyanya kushandiswa. Chinhu chakakosha ndechekuti: chekutanga, acidify mvura ine tsvina ine cyanide kushandura iyo cyanide ions mairi kuita HCN. HCN inopfuura nepakati pemafuta - chikamu chemvura membrane ichipinda muchikamu chemvura yemukati uye yozosangana neNaOH kugadzira NaCN.

6.Electrodialysis Method

• Iyi nzira inoshandisa munda wemagetsi kutyaira kutama kweion kuburikidza neion - kuchinjanisa membranes kuti uwane kupatsanurwa uye kupora kwezvinhu.

Kuedza Kudzidza paMugodhi weGoridhe's Cyanide-Poor Liquid

Background Yekuedza

Mvura ine cyanide-yakashata yemumwe mugodhi wegoridhe ine yakanyanya kukwira yakazara cyanide, inosvika 13000mg/L. Yakadaro yakakwira -concentration cyanide - ine tsvina yemvura inoisa njodzi huru kune zvakatipoteredza uye inoda kurapwa kunoshanda.

Nzira dzekuedza

1.H₂O₂ + ClO₂ + C Adsorption Method

• Munzira iyi, hydrogen peroxide (H₂O₂) uye chlorine dioxide (ClO₂) zvinotanga kushandiswa seoxidants kuita oxidize cyanides mucyanide - isina kunaka mvura. Ipapo, activated kabhoni (C) adsorption inoitwa kuti ienderere mberi nekubvisa zvakasara zvinosvibisa.

2.Three - Stage Oxidation (H₂O₂ + Catalyst “M”) + Chlorination Aeration + C Adsorption Method

• Kuoxidation Kwematanho Matatu : Hydrogen peroxide (H₂O₂) uye catalyst chaiyo "M" zvinoshandiswa paoxidation yematanho matatu. Izvi zvinoitirwa kuve nechokwadi chekuti macompounds akasiyana-siyana ecyanide, kusanganisira macyanides akaomarara, anosanganiswa.

• Kufefetedza kweChlorination : Mushure mekufefetedza kwezvikamu zvitatu, kufefetedza kweChlorination kunoitwa. Chlorine inopinzwa mumvura panguva yekufefetedza, iyo inogona kuwedzera kufefetedza zvinhu zvine chekuita necyanide nezvimwe zvinosvibisa zvinoderedza kusvibiswa.

• C Kunyungudika : Chekupedzisira, kunyungudika kwekabhoni kunoshandiswa kunyungudika tsvina yasara pamwe nechero zvinhu zvine chekuita necyanide kuti kuzadzisa chinangwa chekuchenesa cyanide - mvura isina kunaka.

Kuedza Migumisiro uye Kuenzanisa

1.H₂O₂ + ClO₂ + C Adsorption Method

• Iyi nzira yakawana imwe dhigirii yekubviswa kwecyanide, asi iyo yekupedzisira yakazara cyanide yemukati mumvura yakarapwa yakanga ichiri yakakwira, ichitadza kuzadzisa zviyero zvepasi rose.

2.Three - Stage Oxidation (H₂O₂ + Catalyst “M”) + Chlorination Aeration + C Adsorption Method

• Iyi nzira yakaratidza zvimwe zvinogutsa. Yekupedzisira yakazara cyanide yemukati yakaderedzwa kusvika 0.44mg/L, iyo inosangana nenyika yekubuda zviyero. Pamusoro pezvo, zviri mune mamwe masimbi anorema zvakare akasangana neakakodzera nyika standard zvinodiwa.

• Mutengo - Kushanda : Panyaya yemutengo, kunyangwe maitiro e oxidation ematanho matatu ane catalyst uye kuwedzera chlorination aeration kuchida mashandiro akaomarara uye kushandiswa kwemamwe ma catalysts ne chlorine, zvakazara, zvichienzaniswa nedzimwe nzira dzakaomarara kana dzinodhura zvakanyanya, mutengo wacho wakaringana. Inogona kurapa cyanide yakawanda isina simba uku ichidzora mitengo mukati mehuwandu hunogamuchirwa.

mhedziso

Kurapwa kwecyanide - isina mvura mumigodhi yegoridhe ibasa rakaoma asi rakakosha. Kuburikidza nechidzidzo chekuedza pacyanide - mvura isina kunaka yemumwe mugodhi wegoridhe, zvinogona kuonekwa kuti nzira dzakasiyana dzekurapa dzine zvadzo zvakanakira nekuipira. Iwo matatu - nhanho oxidation (H₂O₂ + catalyst “M”) + chlorination aeration + C adsorption nzira inoratidza zvakaringana kurapwa mhedzisiro uye mutengo - kushanda kwecyanide - isina mvura ine yakakwira yakazara cyanide zviri mumugodhi wegoridhe uyu. Zvisinei, kuenderera mberi kwekutsvakurudza nekuvandudza kuchiri kudiwa mune ramangwana kukudziridza nzira dzekurapa dzinoshanda, dzinodhura - dzinoshanda, uye dzinochengetedza zvakatipoteredza kuti zvizadzise zviri nani zvinodiwa zvekuchengetedzwa kwezvakatipoteredza uye budiriro yakagadzikana muindasitiri yemigodhi yegoridhe.