Ọmụmụ na ọgwụgwọ nke ọla kọpa-arsenic mkpofu mmiri acid na sodium hydrosulfide kama sodium sulfide

Okwu Mmalite

Nnyocha na-egosi na ọgwụgwọ nke ihe mkpofu ọla kọpa na arsenic nwere na-eji usoro nke gụnyere mmiri ozuzo sulfide, nke na-esote mgbakwunye gypsum na mwepụ electrochemical, nke na-eduga na mwepụ kwụsiri ike nke na-emezu ụkpụrụ iwu. Na usoro mmiri ozuzo sulfide, a na-agbakwunye ngwọta sodium sulfide nwere oke mkpokọta nke 26% na akpaghị aka na acid mkpofu ọla kọpa na arsenic n'okpuru ọnọdụ acidity kpọmkwem, na-ebute mmepụta nke CuS na As2S3 precipitates iji wepụ ọla kọpa na arsenic ions site na usoro mmiri mmiri. Na mmepụta n'ezie, ngwọta sodium sulfide nwere oke dị elu nke ihe na-adịghị agbaze agbaze, mgbe a na-ekpughe ya na ikuku, ọ na-eme ka ọ dị nro iji mepụta thiosulfate. Na mgbakwunye, ọ nwere oke okpomọkụ kristal dị elu, tinyere ihe ndọghachi azụ ndị ọzọ. Ya mere, ịchọta ihe nnọchite anya sulfide ọhụrụ iji dochie sodium sulfide ga-adị oke mkpa.

Sodium hydrosulfide siri ike

Ụkpụrụ Usoro

N'ihi usoro mmịpụta H2S dị ugbu a nke karịrị akarị, a na-eji Sodium hydrosulfide agwọ acid mkpofu ọla kọpa na arsenic dabere na akụrụngwa na usoro nke acid mkpofu na mmiri mkpofu nke ụlọ ọrụ sulfuric acid. Usoro a na-eji ngwọta ngwakọta nke sodium hydrosulfide na sodium sulfide maka ọgwụgwọ ahụ.

Oge nhazi

Ihe onyonyo nke 1 na-egosi eserese usoro na-erugharị maka ọgwụgwọ ọla kọpa na acid mkpofu nwere arsenic na-eji sodium hydrosulfide. Ngwọta acid mkpofu, mgbe ewepụsịrị SO2 na ụlọ elu na-apụ apụ, na-abanye na sodium hydrosulfide mmeghachi omume tank si n'elu. A na-agbakwunye ihe ngwọta ngwakọta nke sodium hydrosulfide na sodium sulfide site na ala nke tankị mmeghachi omume. N'okpuru ọnọdụ acidic, a na-emepụta gas H2S ma jiri nwayọọ nwayọọ na-ebili, na-emeghachi omume na ọla kọpa na arsenic site n'elu ala iji mepụta CuS na As2S3. Ihe ndị a na-asọpụta wee na-asọba n'ime ebe a na-etinye ọla kọpa maka sedimentation. A na-ezigara ihe dị elu na usoro ọgwụgwọ gypsum, ebe a na-eme ka sludge dị n'okpuru ebe a na-agbanye mmiri n'ime ihe ntanetị tupu ezipụ ya maka nhazi ọzọ. A na-adọta obere H2S na-enweghị mmeghachi omume site na ọkpọkọ nrụgide na-adịghị mma gaa na ụlọ elu detoxification, ebe ọ na-etinye uche na ngwọta ngwakọta nke sodium hydrosulfide na sodium sulfide, na-ahụ na ọ na-agbaso ụkpụrụ nkwụsị.

Usoro nyocha

A na-anabata usoro mmepụta na-aga n'ihu, yana usoro ndị ọzọ na akara njikwa na-agbanweghị agbanwe. Sodium hydrosulfide na-eme ngwa ngwa karịa sodium sulfide; ọ bụrụ na ntinye uche dị elu, a na-emepụta nnukwu hydrogen sulfide (H2S) ngwa ngwa n'okpuru ọnọdụ acidic. Ewezuga imeghachi omume na ụfọdụ ọla kọpa na arsenic na acid mkpofu, hydrogen sulfide dị oke oke ga-agbanarị elu mmiri n'ihi mkpasu iwe nke paddle na-akpali akpali wee dọpụ ya site na nrụgide ọjọọ na ụlọ elu detoxification. Usoro dị ugbu a na-eji sodium sulfide iji nweta oke hydrogen sulfide emepụtara n'oge mmeghachi omume sulfide (Na2S + H2S = 2NaHS). Mgbe a na-eji sodium hydrosulfide eme nnwale nnwale, tankị nchekwa sodium sulfide nwere ụfọdụ sodium hydrosulfide, nke na-ebelata ikike ya ịmịnye oke hydrogen sulfide. Iji gbochie absorption na-ezughị ezu nke hydrogen sulfide, nke nwere ike iduga na-adịghị ekwenye ekwenye site na ụlọ elu detoxification, mmiri (condensate sitere na uzuoku ọkụ nke sodium sulfide nchekwa tank) na-agbakwunye na sodium sulfide nchekwa tank n'oge oge ikpe iji nọgide na-etinye uche nke ngwakọta ngwakọta nke sodium sulfide na sodium hydrosulfide na ihe dịka 15%.

mmechi

1. Mgbe ijiri ngwọta ngwakọta nke sodium hydrosulfide na sodium sulfide, ọnụ ahịa reagent maka ịgwọ otu cubic mita nke mkpofu acid na-ebelata ruo 52.5% nke sodium sulfide dị ọcha, na-ebute uru akụ na ụba dị ukwuu.

2. Ojiji nke ngwakọta nke sodium hydrosulfide na sodium sulfide emetụtaghị ihe ngosi mwepu nke ogbako; Ụkpụrụ mkpofu mmiri na-adịghị na-anọgide na-eguzosi ike ma kwekọọ.

3. N'ihi ngwakọta agwakọta nke sodium sulfide na sodium hydrosulfide, yana na usoro ụlọ elu detoxification dị ugbu a na-agbanweghị, enwebeghị ihe ọ bụla nke enweghị nnabata na ikuku sitere na ụlọ elu detoxification.