Kushandisa Activated Carbon Kubvisa Yemahara Cyanide (CN-) muWastewater

ziviso

Mvura yetsvina yemaindasitiri kazhinji ine zvinhu zvakasiyana siyana zvine chepfu, pakati pazvo Yemahara cyanide (CN-) ndeyekunetsa zvakanyanya nekuda kwehupfu hwayo hwakanyanya. Kunyangwe mudiki dosi, cyanide zvinogona kuuraya, zvichiita kuti kurapwa kwemvura yakasviba ine mvura iyi kuve dambudziko guru rezvakatipoteredza. Mitemo yakasimba iripo yekudzora kuburitswa kwemvura yakasviba ine cyanide, ichivavarira kwete kungozadzisa zvinodiwa chete asiwo kudzosa cyanide yakawanda sezvinobvira kubva mumarara nematsvina emufekitori. kabhoni yakabuda sechinhu chinovimbisa chekubvisa cyanide yemahara kubva mumvura yakasviba, uye chinyorwa chino chichaongorora mashandisirwo ayo, nzira dzayo, uye zvinhu zvinopesvedzera zvakadzama.

Zvitubu zveCyanide muWastewater

Yakakwira -concentration cyanide mumvura yetsvina inonyanya kuuya kubva kumaindasitiri maitiro senge electroplating, cyanide - yakavakirwa goridhe kudhirowa, gasi kugeza uye kutonhora mvura mucoke oveni uye kuputika mavira, pamwe nemamwe makemikari, mineral processing, synthetic rubber, fiber, uye maindasitiri edhayi. Mushonga we cyanide mumvura dzetsvina idzi unogona kubva pa1 - 180 mg/L kana kutopfuura.

Maitiro eActivation Carbon mukubvisa Mahara Cyanide

Physical Adsorption

Kabhoni yakakangwa ine chimiro chakasimba che microporous uye nzvimbo yakakura chaiyo, inowanzova pakati pe500 kusvika 3000 m²/g. Chimiro ichi chinopa kugona kwakasimba kwekunyungudutsa mvura mumuviri. Maion eCyanide mumvura yakasviba anogona kunyungudutswa pamusoro pemvura. Yakagadziriswa Carbon kuburikidza nemasimba evan der Waals. Nzvimbo yakakura inopa nzvimbo dzakawanda dzekunyungudutsa, zvichiita kuti cyanide ikwanise kubatwa zvinobudirira.

Kemikari Adsorption uye Catalytic Oxidation

Pamusoro pekushambadza kwemuviri, activated kabhoni inogonawo kutora chikamu mukuita kwemakemikari. Kana yakamiswa kabhoni inoshambadza okisijeni nemvura mumvura ine tsvina, inogona kuburitsa hydrogen peroxide (H₂O₂) pamusoro payo, nekabhoni yakagadziriswa pachayo ichiita sechinhu chinokonzeresa. Pamberi pemunyu wemhangura, iyo inogadzirwa H₂O₂ inogona oxidize uye kuora cyanide. Iyo reaction mechanism ndeye:

1. Chizvarwa cheH₂O₂: Okisijeni nemvura zvinoshambadzirwa pane yakabatidzwa kabhoni kuti igadzire H₂O₂.

2. Oxidation ye cyanide: Cyanide inoshongedzwa neH₂O₂ pasi pekuita kwekuita kwemhangura munyu, zvichikonzera kuparara kwecyanide kuita zvinhu zvishoma zvinokuvadza.

Zvinhu Zvinokanganisa Kubvisa Kubudirira kweActivation Carbon

Chekutanga Cyanide Concentration

Iyo yakakwirira yekutanga kusanganiswa kwecyanide yemahara mumvura yetsvina, iyo yakakura simba rekutyaira rekushambadza. Nekudaro, sezvo iyo adsorption kugona kweiyo activated kabhoni inogumira, kana iyo yekutanga yekuisa inodarika imwe kukosha, iyo yekubvisa inoshanda inogona kusawedzera zvakaenzana. Mune zvimwe zvidzidzo, zvakaonekwa kuti nekuwedzera kwekutanga cyanide concentration, huwandu hwecyanide yakashambadzirwa payuniti yakawanda yeakabatidzwa kabhoni inotanga kuwedzera uyezve mazinga akadzimwa.

pH Kukosha

Iyo pH kukosha kwemvura yakasviba inokanganisa zvakanyanya kushambadza kwecyanide neyakagadzirwa kabhoni. Kazhinji, pasi pemamiriro eacidic, iyo adsorption kugona kweiyo activated kabhoni yecyanide yakadzikira. Sezvo kukosha kwepH kuchiwedzera, iyo adsorption kugona zvishoma nezvishoma inowedzera. Kana iyo pH iri mu alkaline range, kunyanya pamusoro pe 11. kubviswa kwe cyanide kunogona kusvika kudarika 95% mukati memaminitsi makumi matatu mune dzimwe nguva. Izvi zvinodaro nekuti iyo speciation ye cyanide mumhinduro inoshanduka nepH, uye chimiro che cyanide ion chinowedzera kuita adsorption pane activated kabhoni pasi pemamiriro ealkaline.

tembiricha

Iyo adsorption ye cyanide neyakagadzirwa kabhoni ndeye exothermic maitiro. Sezvo tembiricha inokwira, iyo adsorption kugona kazhinji inoderera. Semuenzaniso, kana iri mhangura - impregnated activated carbon, kana yakasanganiswa necyanide solution, adsorption effect ye cyanide inoderera nekuwedzera kwekushisa. Izvi zvinodaro nekuti kuwedzera tembiricha kunokurudzira desorption yeadsorbed zvinhu kubva pamusoro peiyo activated kabhoni.

Kukurudzira Nguva

Nguva yekusimudzira yakakwana inodiwa kuti ive nechokwadi chekuti cyanide mumvura yetsvina inobata zvakakwana neiyo activated carbon. Muchikamu chekutanga, sezvo nguva inokurudzira inowedzera, kubviswa kwe cyanide kunowedzera nokukurumidza. Nekudaro, mushure mekusvika pane imwe nguva, chiyero chekubvisa chinowanzo kudzikamisa, zvichiratidza kuti iyo adsorption process yasvika pakuenzana.

Zvishandiso zveActivated Carbon muKurapa Cyanide - Ine Wastewater

Muindasitiri yeGoridhe Mining

Mumigodhi yegoridhe, kunyanya mucyanide - yakavakirwa goridhe kudhirowa maitiro, yakawanda yakawanda yetsvina ine cyanide inogadzirwa. Activated kabhoni inogona kushandiswa kubvisa yemahara cyanide kubva mumvura yakasviba iyi. Pamusoro pekubvisa cyanide, activated carbon inogonawo kushambadza goridhe - cyanide complexes (seAu(CN)₂⁻) mumvura ine tsvina. Iyo adsorbed yegoridhe - cyanide complexes inogona kufambiswazve kudzoreredza goridhe, kuwana zvese kuchengetedzwa kwezvakatipoteredza uye kudzoreredza zviwanikwa.

MuIndasitiri yeElectroplating

Electroplating zvirimwa zvinowanzo shandisa cyanide - ine zvigadziriso mukugadzira, zvichikonzera cyanide - yakasvibiswa mvura yetsvina. Activated kabhoni kurapwa inogona kunyatso kudzikisa iyo cyanide yemukati mumvura yetsvina kuti isangane nemiyero yekuburitsa. Kuenzaniswa nedzimwe nzira dzechinyakare dzekurapa, dzakadai sealkaline chlorination, activated kabhoni kurapwa ine zvakanakira kushoma kwechipiri kusvibiswa uye mukana wekudzoreredza zviwanikwa.

Kuenzanisa nedzimwe nzira dzekurapa

Alkaline Chlorination

Alkaline chlorination inzira yakakura yekuparadza cyanides mumvura yakasviba. Inoshandisa chlorine - ine zvinhu zvakaita sechlorine gasi, liquid chlorine, kana bleaching poda kuita oxidize cyanide kuita isiri-chepfu kabhoni dhiokisaidhi (CO₂) uye nitrogen (N₂). Nekudaro, iyi nzira inogona kuburitsa zvinokuvadza ne-zvigadzirwa, uye maitiro ekushanda anoda kudzora kwakasimba kwe chlorine dosage uye maitiro ekuita. Kusiyana neizvi, activated kabhoni kurapwa isarudzo ine hushamwari nharaunda nekugona kusarudza adsorb cyanide uye inogona kudzoreredza simbi dzakakosha.

Hydrogen Peroxide Oxidation

Hydrogen peroxide oxidation inogona zvakare kushandiswa kuderedza kuungana kwe cyanide mumvura ine tsvina. Inogona oxidize cyanide kune yakaderera - toxicity level. Nekudaro, hydrogen peroxide inodhura reagent, uye maitiro angangoda kuramba achiwedzera reagents, kuwedzera mutengo wekurapa. Activated kabhoni, kune rumwe rutivi, ine kuita kwakadzikama kana yanyatsosarudzwa uye kushandiswa, uye kuvandudzwa kwayo kunogonawo kutariswa kuderedza mari.

Zvakaitika Zvemangwana

Kuvandudzwa kweModified Activated Carbon

Kuti uwedzere kuvandudza kushanda kweiyo activated kabhoni mukubvisa yemahara cyanide, tsvakiridzo iri kuitwa pane yakagadziridzwa activated kabhoni. Semuenzaniso, kuisa kabhoni yakagadzirwa nesimbi dzakasiyana (semhangura, iron, nezvimwewo) inogona kukwidziridza kugona kwayo kwe cyanide. Yakasiyana simbi - yakarodha activated kabhoni inogona kugadziridzwa zvinoenderana neayo maitiro emvura yetsvina kuti iwane zvirinani kurapwa.

Combined Treatment Processes

Kubatanidza activated kabhoni kurapwa nedzimwe nzira dzekurapa zvakare maitiro. Semuyenzaniso, kubatanidza activated carbon adsorption ne biological treatment inogona kutanga yashandisa activated carbon kuderedza yakakwira -concentration cyanide mumvura tsvina kusvika padanho rinonyanya kukodzera kurapwa kwebiology, uyezve kushandisa utachiona kuwedzera kuora uye kubvisa cyanide - zvinhu zvine hukama. Iyi nzira yakabatanidzwa inogona kutora mukana wemasimba emhando dzakasiyana dzekurapa uye kubudirira zvakanyanya uye zvakakwana Kuchenesa mvura.

mhedziso

Activated kabhoni inoratidza kugona kukuru mukubviswa kwemahara cyanide (CN-) kubva mumvura ine tsvina. Kuburikidza nekushambadza kwemuviri uye kuita kwemakemikari, inogona kudzikisa zvinobudirira iyo cyanide yemukati mumvura yakasviba, kusangana nemamiriro ekunze ekuburitswa kwemazinga uye kunyange kugonesa kudzoreredza zviwanikwa mune dzimwe nguva. Kunyangwe kuchine dzimwe nzvimbo dzinoda kuvandudzwa, dzakadai sekuwedzera optimize adsorption uye kudzikisira mitengo, nekuenderera mberi kwetsvagiridzo yeyakagadziriswa kabhoni gadziriso uye akasanganiswa maitiro ekurapa, activated kabhoni ichaita basa rinowedzera kukosha mukurapwa kwecyanide - ine tsvina yemvura mune ramangwana.