Kugadzira Maitiro eKurapa Sodium Cyanide Wastewater neHydrogen Peroxide

ziviso

Sodium cyanide ikemikari ine muchetura inonyanya kushandiswa mumaindasitiri akadai semigodhi, electroplating, uye makemikari synthesis. Nekudaro, mvura yetsvina inogadzirwa kubva mumaitiro aya ine yakanyanya kuwanda yecyanide, inoisa njodzi huru kune zvakatipoteredza uye hutano hwevanhu kana ikasabatwa nemazvo. Kurapwa kweHydrogen peroxide kwakabuda senzira inoshanda uye yakachengeteka yekubata nayo -Sodium cyanide - ine tsvina yemvura. Ichi chinyorwa chinoongorora maitiro ekugadzira ekushandisa rehydrogen peroxide kuchenesa mvura yakasviba yakadaro, ichivhara zvinhu kubva pamaitiro ekuita kusvika kune chaiwo maitiro ekushanda.

Maitiro Okuita

Oxidation yeCyanide neHydrogen Peroxide

Kuita pakati pehydrogen peroxide uye Sodium Cyanide is an oxidation - kuderedza maitiro. Mune mhinduro ine aqueous, hydrogen peroxide inoshanda seanoxidizing agent. Inoisa iyo cyanide ion kuita zvinhu zvishoma zvine chepfu. Pasi pemamiriro akakodzera, hydrogen peroxide inoputsa chisungo chakasimba mukati meiyo cyanide ion. Iyo kabhoni mu cyanide inoiswa oxidation kune yakakwirira oxidation mamiriro, ichigadzira iyoni isingakuvadzi, uye nitrogen inoburitswa segasi. Kuita uku kwakakosha nekuti kunoderedza zvakanyanya huturu hwemvura yetsvina.

Basa reCatalysts (Sarudzo)

Mune zvimwe zviitiko, zvinokonzeresa zvinogona kuwedzerwa kukurumidza kuita pakati pehydrogen peroxide necyanide. Semuenzaniso, imwe shanduko yesimbi ions inogona kuita senge inokonzeresa mukuita system yakafanana neiyo Fenton reaction. Macatalysts anodzikisa chipingamupinyi chesimba rekuita, zvichibvumira iyo oxidation yecyanide kuti iitike nekukurumidza pane yakaderera tembiricha uye nekushomeka kwehydrogen peroxide kushandiswa. Nekudaro, kana uchishandisa ma catalysts, zvinhu zvakaita sehuwandu hwecatalyst yakawedzerwa, pH control, uye inogona kusvibiswa yechipiri kubva kune zvinokonzeresa zvisaririra zvinoda kunyatsotariswa.

Maitiro Kuyerera muKugadzira Kudzidzira

Pretreatment of Wastewater

Pamberi pehydrogen peroxide kurapwa, iyo sodium cyanide - ine tsvina yemvura inowanzoda pretreatment. Iyi nhanho ine chinangwa chekugadzirisa pH kukosha kwemvura yetsvina kusvika padanho rakakodzera. Kazhinji, iyo pH inogadziriswa kune zvishoma alkaline mamiriro, kutenderera 8 - 10. Izvi zvinodaro nekuti iyo Oxidation Reaction pakati pehydrogen peroxide necyanide inoshanda zvakanyanya munzvimbo ine alkaline. Pamusoro pezvo, pretreatment inogona kusanganisira kubvisa tsvina yakakura, yakamiswa, uye zvimwe zvinhu zvinogona kukanganisa maitiro anotevera ekurapwa. Nzira dzekusefa dzakaita sejecha mafirita kana membrane mafirita anogona kushandiswa kuita izvi.

Hydrogen Peroxide Kuwedzera

Huwandu hwakakodzera hwehydrogen peroxide hunozowedzerwa kumvura inoraswa isati yacheneswa. Kuyerwa kwehydrogen peroxide kunotarwa zvichienderana nekuwanda kwecyanide mumvura ine tsvina. Kazhinji, kuverenga kunotanga kuitwa maererano nemakemikari anoita. Asi mukugadzirwa chaiko, kuwandisa kwehydrogen peroxide kunowanzowedzerwa kuve nechokwadi chekuzara kwe cyanide oxidation. Iko kusanganiswa kwehydrogen peroxide inoshandiswa mumaindasitiri ekushandisa kazhinji iri pakati pe30% - 50%. Kuwedzerwa kwehydrogen peroxide kunogona kuwanikwa kuburikidza ne metering pombi, iyo inogona kunyatso kudzora kuyerera uye huwandu hwehydrogen peroxide inopinda mukati. Kuchenesa mvura tangi.

Reaction uye Kusanganisa

Mushure mekuwedzera hydrogen peroxide, mvura yetsvina inoda kunyatsosanganiswa kuti ive nechokwadi chekusangana pakati pehydrogen peroxide necyanide. Kusanganisa kunogona kuwanikwa uchishandisa ma mechanical agitators, air - driven mixers, kana musanganiswa wezvose. Nguva yekuita inosiyana zvichienderana nezvinhu zvakadai sekutanga cyanide concentration, tembiricha, uye kuvapo kwezvinokonzeresa. Kazhinji, nguva yekuita inogona kubva pamaawa akati wandei kusvika kumaawa gumi nemaviri. Munguva iyi, kutaridzika kwekushisa zvakare chinhu chakakosha. Kunyangwe maitiro acho achigona kuitika pane tembiricha yekamuri, kuwedzera tembiricha mukati meimwe siyana (kazhinji isingapfuuri 50 ° C) inogona kukurumidza kuita chiyero. Zvisinei, kupisa kwakanyanya kunogona kukonzera kuora kwehydrogen peroxide, kuderedza kushanda kwayo mukurapa cyanide.

Post - kurapwa

Kana mhinduro yacho yapera, matanho ekurapa anodiwa. Imwe yeakakosha positi - matanho ekurapa kubvisa yakasara hydrogen peroxide. Yakawandisa hydrogen peroxide mumvura yetsvina yakacheneswa inogona kukuvadza nharaunda uye inogona zvakare kukanganisa maitiro anotevera ekurapwa kwebiological kana mvura yetsvina ichizowedzerwa kurapwa mubiological treatment system. Residual hydrogen peroxide inogona kuodzwa nekuwedzera zvinoderedza maajenti sesodium sulfite kana kushandisa nzira dzekuora. Mushure mekubvisa yakasara yehydrogen peroxide, yakagadziriswa mvura yetsvina inobva yaoma - kupatsanurwa kwemvura kubvisa chero mvura inonaya kana yakamiswa yakaoma yakaumbwa panguva yekurapwa. Sedimentation matangi, flotation zvishandiso, kana masefa zvikamu zvinogona kushandiswa pane izvi. Chekupedzisira, mvura yetsvina yakacheneswa inoongororwa kuti ione kana cyanide concentration inosangana neyakakodzera yekuburitsa miyero.

Zvinhu Zvikuru Zvinokanganisa Kushanda Kwekurapa

pH Kukosha

Sezvambotaurwa, kukosha kwepH yemvura yetsvina kunokanganisa zvakanyanya pakurapwa kwehydrogen peroxide. Munzvimbo ine acidic, hydrogen peroxide inogona kuora nekukurumidza mumvura uye okisijeni, ichideredza kugona kwayo oxidize cyanide. Kune rumwe rutivi, munzvimbo ine alkaline yakanyanya, chiyero chekuita pakati pehydrogen peroxide necyanide chinogonawo kukanganiswa. The optimal pH range for the reaction between hydrogen peroxide and cyanide is usually around 8 - 10. apo mhinduro inogona kuenderera zvakanaka uye kuora kwehydrogen peroxide kunoderedzwa.

tembiricha

Tembiricha inoita basa rakakosha mukumhanya kwekuita. Kuwedzera kwekushisa kunowanzo mhanyisa kuita pakati pehydrogen peroxide necyanide. Zvisinei, sezvo tembiricha inokwira, kuora kwehydrogen peroxide kunowedzerawo kukosha. Kana tembiricha yadarika 50°C, kuora kwehydrogen peroxide kunogona kukurumidza zvikuru zvokuti kunoderedza huwandu hwehydrogen peroxide inowanika pakuita oxidizing cyanide. Naizvozvo, mukugadzirwa kunoshanda, tembiricha inoda kunyatsodzorwa mukati mehunyoro hunoenderana nechiyero chekuita uye kugadzikana kwehydrogen peroxide.

Kuwedzera kweCyanide uye Hydrogen Peroxide

Iko kusanganiswa kwekutanga kwecyanide mumvura yakaraswa kunogadzirisa huwandu hwehydrogen peroxide inodiwa kuti iite oxidation yakakwana. Yakakwira cyanide concentrations inoda yakawanda hydrogen peroxide. Kana muyero wehydrogen peroxide usina kukwana, oxidation yecyanide inenge isina kukwana, zvichiita kuti mvura yakasvibiswa yakarapwa isingasviki mitemo. Sezvineiwo, kuwedzera yakawandisa hydrogen peroxide hakungowedzere mari yekurapa asiwo kunoda zvakanyanya kuoma post - kurapwa kubvisa yakawandisa. Nokudaro, kunyatsogadzirisa kusanganiswa kwecyanide mumvura yakasvibiswa uye kugadzirisa zvakakodzera hydrogen peroxide dosage inokosha pakurapa kwakanaka.

Nyaya Yokudzidza muIndasitiri yeMigodhi

Mukuita basa rekuchera goridhe, yakawanda sodium cyanide inoshandiswa mukutora goridhe maitiro, ichigadzira yakakura cyanide - ine tsvina. Mugodhi wacho wakatora nzira yekurapa yehydrogen peroxide. Kutanga, mvura yetsvina yakaunganidzwa mutangi hombe rokuchengetera. Iyo pH yemvura yakasviba yakagadziridzwa kuita 9 uchishandisa lime. Zvadaro, 35% yehydrogen peroxide yakawedzerwa kumvura yetsvina kuburikidza nepombi yekuyera. Mari yekuwedzera yakaverengerwa zvichienderana neiyo cyanide concentration mumvura yetsvina, ine zvishoma yakawandisa kuti ive nechokwadi chekuti oxidation yakakwana.

Mvura yetsvina yakasanganiswa uchishandisa mechanical agitator kwe8 maawa. Munguva iyi, tembiricha yemaitiro ekuita yakachengetedzwa payakatenderedza 35 ° C kuburikidza neinotonhorera uye yekudziya system. Mushure mekuita, sodium sulfite yakawedzerwa kuti iparadze yakasara hydrogen peroxide. Mvura yetsvina yakacheneswa yaibva yatumirwa kune tangi remashanga kuti iparadzanise yakasimba - yemvura. Iyo supernatant yakaongororwa, uye zvigumisiro zvakaratidza kuti cyanide concentration mumvura yakasvibiswa yakadzikira kubva pamutengo wekutanga we 500 mg / L kusvika pasi pe0.5 mg / L, ichisangana nemitemo yemunharaunda yekubuda kwezvakatipoteredza. Mhosva iyi inoratidza kushanda kweiyo hydrogen peroxide kurapwa maitiro mune chaiyo - yenyika maindasitiri mamiriro.

mhedziso

Iyo hydrogen peroxide kurapwa kwe Sodium Cyanide Wastewater inzira inoshanda uye inoshanda mukugadzirwa kwemaindasitiri. Nekunzwisisa maitiro ekuita, kugadzirisa kuyerera kwemaitiro, uye kudzora zvinhu zvakakosha senge pH, tembiricha, uye reagent dosages, kurapwa kwemhando yepamusoro yecyanide - ine tsvina yemvura inogona kuwanikwa. Nekudaro, kuenderera mberi kwekutarisa uye kugadzirisa kunodiwa panguva yekugadzira nzira kuti ive nechokwadi kugadzikana kwekurapa kunyatsoshanda uye kutevedzera mitemo yezvakatipoteredza. Sezvo zvinodiwa kwezvakatipoteredza zvichiwedzera kuomarara, nzira yekurapa yehydrogen peroxide yesodium cyanide tsvina inotarisirwa kuita basa rakatonyanya kukosha mukuchengetedza nharaunda.