Uphononongo kunyango lwe-copper-arsenic waste acid yamanzi kunye ne-sodium hydrosulfide endaweni ye-sodium sulfide.

intshayelelo

Uphando lubonisa ukuba unyango lwe-asidi yobhedu kunye ne-arsenic equkethe inkunkuma isebenzisa inkqubo ebandakanya i-sulfide precipitation, ilandelwa yi-gypsum supplement kunye ne-electrochemical neutralization, ekugqibeleni ikhokelela ekukhutshweni okuzinzile okuhlangabezana nemigangatho yokulawula. Kwinqanaba le-sulfide yemvula, a sodium sulfide Isisombululo esinobunzima be-26% yongezwa ngokuzenzekelayo kwi-asidi yenkunkuma kunye ne-arsenic equkethe inkunkuma phantsi kweemeko ezithile ze-asidi, okubangelwa ukubunjwa kwe-CuS kunye ne-As2S3 i-precipitates ukususa i-copper kunye ne-arsenic ion kwisigaba samanzi. Kwimveliso yokwenyani, isisombululo se-sodium sulfide siqulethe amanqanaba aphezulu okungcola okunganyibilikiyo, kwaye xa sibonakaliswe emoyeni, ngokuthe ngcembe siya oxidize ukwenza i-thiosulfate. Ukongeza, inobushushu obuphezulu becrystallization, phakathi kwezinye izinto ezingezizo. Ngoko ke, ukufumana i-agent entsha ye-sulfide ukuthatha indawo ye-sodium sulfide kuya kubaluleka kakhulu.

ISodium Hydrosulfide eqinile

Inkqubo yoMgaqo

Ukunyanzelwa yinkqubo ekhoyo yokufunxa engaphezulu kwe-H2S, unyango lobhedu kunye ne-arsenic equlathe inkunkuma yeasidi kusetyenziswa. Isodiyam hydrosulfide iqhutywa ngokusekwe kwisixhobo sangoku kunye nokuhamba kwenkqubo ye-asidi yenkunkuma ye-asidi yocweyo yesulfuric kunye namanzi amdaka. Le ndlela isebenzisa isisombululo esixubileyo se-sodium hydrosulfide kunye ne-sodium sulfide yonyango.

Inkqubo yokuPhuma

Umzobo 1 ubonisa umzobo wokuhamba kwenkqubo yonyango lwe-asidi yobhedu kunye ne-arsenic equkethe inkunkuma esebenzisa i-sodium hydrosulfide. Isisombululo se-asidi yenkunkuma, emva kokususwa kwe-SO2 kwinqaba yokuhlutha, ingena kwi-sodium hydrosulfide reaction tank ukusuka phezulu. Isisombululo esixubileyo se-sodium hydrosulfide kunye ne-sodium sulfide yongezwa ukusuka phantsi kwetanki yokusabela. Ngaphantsi kweemeko ze-acidic, igesi ye-H2S yenziwa kwaye ngokuthe ngcembe iphakama, isabela ngobhedu kunye ne-arsenic ukusuka phezulu ukuya phezulu ukwenza i-CuS kunye ne-As2S3 i-precipitates. Ezi mvula ziphuphuma zingene kwi-copper thickening ukwenzela ukuchithwa kwentlenga. I-supernatant ithunyelwa kwinkqubo yonyango ye-gypsum, ngelixa i-sludge ephantsi ichithwa emanzini kwi-press press ngaphambi kokuba ithunyelwe ukuqhutyelwa phambili. Ixabiso elincinci le-H2S elingaphendulwanga litsalwa ngumbhobho obi woxinzelelo kwinqaba ye-detoxification, apho ixutywe ngesisombululo esijikelezayo somxube we-sodium hydrosulfide kunye ne-sodium sulfide, ukuqinisekisa ukuba ihlangabezana nemigangatho yokukhupha.

Indlela yovavanyo

Imodi yokuvelisa eqhubekayo yamkelwa, kunye nezinye iinkqubo kunye neeparitha zokulawula zihlala zingatshintshi. I-sodium hydrosulfide isabela ngokukhawuleza kune-sodium sulfide; ukuba i-concentration iphezulu, isixa esikhulu se-hydrogen sulfide (H2S) senziwa ngokukhawuleza phantsi kweemeko ze-acidic. Ngaphandle kokusabela ngenye yobhedu kunye ne-arsenic kwi-asidi yenkunkuma, i-hydrogen sulfide egqithisileyo kakhulu iya kubaleka umphezulu wolwelo ngenxa yokuzazela kwephini lokuhlambulula kwaye itsalwe luxinzelelo olubi kwinqaba yokukhupha ityhefu. Inkqubo ekhoyo isebenzisa i-sodium sulfide ukufunxa i-hydrogen sulfide engaphezulu eyenziwe ngexesha le-sulfide reaction (Na2S + H2S = 2NaHS). Emva kokusetyenziswa kovavanyo lwe-sodium hydrosulfide, itanki yokugcina i-sodium sulfide iqulethe i-sodium hydrosulfide, enciphisa amandla ayo okufunxa i-hydrogen sulfide engaphezulu. Ukuthintela ukufunxwa okungaphelelanga kwe-hydrogen sulfide, enokukhokelela ekukhutshweni okungahambelaniyo nokukhutshwa kwe-detoxification tower, amanzi (i-condensate ukusuka kumphunga wokufudumeza wetanki yokugcina i-sodium sulfide) yongezwa kwitanki yokugcina i-sodium sulfide ngexesha lovavanyo ukuze kugcinwe ukuxinwa kwesisombululo esixubileyo se-sodium sulfide kunye ne-sodium hydrosulfide malunga ne-15%.

isiphelo

1. Emva kokusebenzisa isisombululo esixubeneyo se-sodium hydrosulfide kunye ne-sodium sulfide, ixabiso le-reagent yokuphatha enye i-cubic meter ye-asidi yenkunkuma iyancipha ukuya kwi-52.5% ye-sodium sulfide ecocekileyo, ekhokelela kwiinzuzo ezibalulekileyo zezoqoqosho.

2. Ukusetyenziswa kwesisombululo esixubileyo se-sodium hydrosulfide kunye ne-sodium sulfide ayizange ichaphazele izibonakaliso zokukhupha kwi-workshop; imigangatho yokukhutshwa kwamanzi amdaka ihlala izinzile kwaye iyahambelana.

3. Ngenxa yokusetyenziswa okuxubileyo kwe-sodium sulfide kunye ne-sodium hydrosulfide, kunye nenkqubo ekhoyo ye-detoxification tower engatshintshiyo, akukho ziganeko zokungahambelani nokukhutshwa kwe-detoxification tower.