Chidzidzo Chekuedza paMarapirwo eMarapirwo eCyanide-Yakashata Liquid mumugodhi weGoridhe

ziviso

Muindasitiri yemigodhi yegoridhe, kurapwa kwe cyanide-mvura isina kunaka ine kukosha kukuru. Cyanide-varombo mvura, senge mhinduro mushure mekutorwa kwegoridhe mucyanidation process, ine zvakasiyana siyana zvinosvibisa, kunyanya cyanide makomisheni, ayo anogona kukonzera kusvibiswa kwezvakatipoteredza kana isina kunyatsogadziriswa. Naizvozvo, kugadzira zvinobudirira uye zvinodhura Nzira dzokurapa nekuti cyanide-varombo mvura ibasa rekukurumidzira. Iyi blog post inotarisa pakuedza kudzidza kwemaitiro ekurapa ecyanide-varombo mvura mune imwe Mugodhi wegoridhe, nechinangwa chekupa ruzivo rwakakosha uye mareferensi eindasitiri.

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 yakatokura yekuparadza cyanides mumvura yetsvina uye inoshandiswa zvakanyanya mumiti ye electroplating, coking zvirimwa, uye goridhe rinonyungudutsa zvirimwa. Pasi pemamiriro e pH 11 - 12. Cyanides uye maion esimbi akaomarara mumvura ine cyanide anosanganiswa kuita cyanates, uye chlorine inowedzerwa kechipiri kuti isanganiswe mu kabhoni dioxide, nitrogen, nezvimwewo.

• Advantages: Maitiro acho akakura, ane maitiro akanaka ekurapa uye kushandiswa kwakakura. Iyo nzira yekurapa inogona kuve nyore otomatiki.

• payakaipira: Cyanides haigoni kushandiswa zvakare, mari yekurapa yakakwirira, uye haigoni kubvisa iron-cyanide complexes. Panewo 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.

• Advantages: Kushanda kuri nyore uye kuri nyore, kuri nyore kudzora, uye dhigirii rekugadzira otomatiki rakakwira. Ozone inogona kugadzirwa pa-saiti, inova yakakosha kune zvidyarwa zvecyanidation zvine zvifambiso zvisina kunaka asi magetsi akakwana. Kushanda kwekuchenesa kwakakwirira, uye hapana kusvibiswa kwechipiri kunogadzirwa.

• payakaipira: Simba rekushandisa kugadzira ozone rakakura, uye mutengo wekugadzira wakakwira, izvo zvinoganhurira kushandiswa kwayo kwakakura.

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.

• Hunhu Hunokosha: Tembiricha inoda kuchengetedzwa pamusoro pe10 ℃ nguva dzese kuchengetedza mwero wekubvisa 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.

• Advantages: Maitiro aya anogona kukwidziridza kudzoreredzwa kwecyanides, kuvandudza chiyero chekushandisa checyanides, uye kuderedza mutengo wekugadzira.

• payakaipira: Mari yekudyara nguva imwe chete yakakura, kuyerera kwemaitiro kwakaoma, uye zvakaoma kune yakarapwa cyanide-ine inosara mvura kuti isangane nezviyero zvekuburitsa.

2.Ion Exchange Method

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

3.Adsorption Method

• Activated Carbon Adsorption: Kunyudzwa kwe Yakagadziriswa Carbon Zvinonyanya kutsamira pamaburi akawanda emukati mayo uye nzvimbo yakakura chaiyo. Maitiro ekunyungudutsa anosanganisira kunyungudutsa kwemuviri uye kunyungudutsa kwemakemikari. Kubviswa kwecyanide kunonyanya kuita nzira nhatu: kunyungudutsa, kunyungudutsa, uye kubvisa. Maitiro makuru maitiro ekunyungudutsa kwecyanides mumvura ine cyanide ine hydrogen peroxide pamusoro pekabhoni yakakangwa.

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

• Nhatu - Stage Oxidation: Hydrogen peroxide (H₂O₂) uye chaiyo catalyst "M" inoshandiswa kune matatu-nhanho oxidation. Izvi ndezvekuita kuti pave nekuwedzera kwakaringana oxidation yeakasiyana cyanide makomisheni, kusanganisira yakaoma cyanides.

• Chlorination Aeration: Mushure meiyo matatu-nhanho oxidation, chlorination aeration inoitwa. Chlorine inounzwa mumvura ichiri kufefetera, iyo inogona kuwedzera oxidize yasara cyanide-inoenderana zvinhu uye zvimwe zvinoderedza zvinosvibisa.

• C Adsorption: Chekupedzisira, activated kabhoni adsorption inoshandiswa kushambadza iyo yasara yakanaka - yakaomeswa zvinosvibisa uye chero yasara cyanide - ine chekuita nezvinhu kuti uwane chinangwa chekuchenesa cyanide - isina mvura mvura.

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 - Kubudirira: Panyaya yemutengo, kunyangwe iyo matatu-nhanho oxidation process ine catalyst uye yakawedzera chlorination aeration inoda mamwe maoresheni akaomarara uye kushandiswa kwezvimwe zvinokonzeresa uye chlorine, zvakazara, zvichienzaniswa nedzimwe nzira dzakanyanya kuomarara kana dzakadhura, mutengo unonzwisisika. Inogona kunyatso kurapa yakakwira -concentration cyanide - isina mvura mvura uku ichidzora mitengo mukati meiyo inogamuchirwa renji.

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.