Uchishandisa sisitimu yekubvisa flue gas desulfurization (FGD) yefekitori yemagetsi inoshandisa marasha semuenzaniso, ongororo iyi inoongorora matambudziko ari mumasisitimu emvura yakasviba echinyakare eFGD, akadai sekugadzirwa kusina kunaka uye mwero wekutadza kushanda kwemidziyo yakawanda. Kuburikidza nekugadzirisa kwakawanda uye kugadzirisa tekinoroji, huwandu hwakasimba mumvura yakasviba hwakaderedzwa, zvichiita kuti mashandiro esystem ashande zvakanaka uye kudzikisa mari yekushanda nekugadzirisa. Mhinduro dzinoshanda uye mazano zvakapihwa, zvichipa hwaro hwakasimba hwekuti mvura yakasviba isaburitswe mune ramangwana.
1. Pfupiso yeSisitimu
Zvivako zvemagetsi zvinoshandisa marasha zvinowanzoshandisa nzira yeFGD ye limestone-gypsum wet, iyo inoshandisa limestone (CaCO₃) senzira inonyudza mvura. Maitiro aya anogadzira mvura yakasviba yeFGD. Muchiitiko ichi, masisitimu maviri eFGD akanyorova ane imwe nzira yekurapa mvura yakasviba. Mvura yakasviba inobva mu gypsum cyclone overflow, inogadziriswa nenzira dzechinyakare (triple-tank system) ine simba rakagadzirwa re22.8 t/h. Mvura yakasviba yakarapwa inopombwa makiromita matanhatu kuenda kunzvimbo yekurasa kuti ibvise guruva.
2. Nyaya Huru Muhurongwa Hwekutanga
Diaphragm yemapombi ekuyedza yaiwanzobuda kana kutadza kushanda, zvichidzivirira kupihwa kwemakemikari nguva dzose. Kukundikana kwakanyanya muma plate-and-frame filter press nemapombi e sludge kwakawedzera kudiwa kwevashandi uye kwakakanganisa kubviswa kwesludge, zvichideredza kudonha kwesediment muma clarifiers.
Mvura yakasviba, yakabva mukuzara kwemvura inonzi gypsum cyclone, yaive nehuwandu hweinenge 1,040 kg/m³ ine huwandu hwakasimba hwe3.7%. Izvi zvakakanganisa kugona kwesystem yekuburitsa mvura yakanatswa nguva dzose uye kudzora huwandu hwemaion anokuvadza mumuchina wekunyudza mvura.
3. Kugadziriswa Kwekutanga
Kuvandudza Kuyerwa Kwemakemikari:
Mamwe matangi emakemikari akaiswa pamusoro pesystem yematangi matatu kuti ave nechokwadi chekuti mvura inoyerwa zvakanaka kuburikidza negiravhiti, inodzorwa nemita yekuyera vanhu paindaneti.
Mhedzisiro: Hunhu hwemvura hwakavandudzwa, kunyange hazvo kudonha kwemvura kwaidiwa. Kubuda kwezuva nezuva kwakaderera kusvika pa200 m³, izvo zvakanga zvisina kukwana kuti masisitimu maviri eFGD ashande zvakanaka. Mari yekuisa mvura yakanga yakakwira, ichiita avhareji ye12 CNY/tani.
Kushandisazve Mvura Yakasviba Kuderedza Guruva:
Mapombi akaiswa pasi pemuchina wekusimbisa mvura kuti aendese chikamu chemvura yakasviba kunzvimbo dzemadota kuti chisanganiswe uye chinyoroveswe.
Mugumisiro: Kumanikidzwa kwakaderera panzvimbo yekurasira marara asi zvakadaro zvakakonzera kusvibiswa kwakanyanya uye kusatevedzera mitemo yekurasira marara.
4. Matanho Ekugadzirisa Pari Zvino
Nemitemo yakaoma yezvakatipoteredza, kugadziriswazve kwehurongwa kwaidikanwa.
4.1 Kugadziriswa kweMakemikoro uye Kushanda Kunogara Kuchienderera Mberi
Kuchengetedza pH iri pakati pe9–10 kuburikidza nekuwedzera huwandu hwemakemikari:
Kushandiswa kwezuva nezuva: lime (45 kg), macoagulants (75 kg), uye maflocculants.
Yakava nechokwadi chekuti mvura yakachena inobuda 240 m³/zuva mushure mekushanda kwenguva pfupi kwesystem.
4.2 Kushandisazve Tangi reEmergency Slurry
Kushandiswa kaviri kwetangi rekukurumidzira:
Munguva yekuzorora: Kuchengetera zvinhu zvisina kuchena.
Munguva yekushanda: Kuisa mvura yakachena kubva muvhu kuti ibudiswe.
Kugadzirisa:
Mavharuvhu nemapombi akawedzerwa pamatanho akasiyana-siyana ematangi kuti zvikwanisike kushanda zviri nyore.
Gypsum yakachekwa nevhu yakadzoserwa kusystem kuti ibvise mvura kana kushandiswazve.
4.3 Kugadziriswa kweSisitimu yese
Kuderedza huwandu hwezvinhu zvakaoma mumvura yakasviba inopinda nekutumira filtrate kubva kumasisitimu ekudzima mvura kubva mubhandi revacuum kuenda kutangi remvura yakasviba.
Kuvandudza kushanda zvakanaka kwejecha nekupfupisa nguva yekugadzika kwejecha kuburikidza nekuyera makemikari mumatangi enjodzi.
5. Mabhenefiti eKugadzirisa
Kugona Kwakavandudzwa:
Kushanda nguva dzose nekuburitsa mvura yakasviba inopfuura 400 m³ zuva nezuva.
Kudzora kuzara kwemaion muchinhu chinonyungudutsa mvura.
Mashandiro Akareruka:
Zvakabvisa kudiwa kwemuchina wekusefa weplate-and-frame.
Kushanda kushoma kwekugadzirisa tsvina.
Kuvimbika Kwesisitimu Kwakawedzerwa:
Kuchinjika kukuru muhurongwa hwekugadzirisa mvura yakasviba.
Kuvimbika kwemidziyo yepamusoro.
Kuchengetedza Mari:
Kushandiswa kwemakemikari kwakaderedzwa kuita lime (1.4 kg/t), macoagulants (0.1 kg/t), uye maflocculants (0.23 kg/t).
Mutengo wekurapa wakadzikiswa kusvika pa5.4 CNY/tani.
Mari yemakemikari inochengetwa pagore inosvika 948,000 CNY.
Mhedziso
Kugadziriswa kweFGD remvura yakasviba kwakaita kuti kushanda zvakanaka kuve nani, mitengo yakaderera, uye kutevedzera mitemo yakaoma yezvakatipoteredza. Matanho aya anoshanda sechiratidzo chehurongwa hwakafanana hunotsvaga kusaburitsa mvura yakasviba zvachose uye kugara kwenguva refu.
Nguva yekutumira: Ndira-21-2025
