Izitsha Zokubola Okungenawo Umoya: Umhlahlandlela Wezobunjiniyela, Wokuqamba, Nokuphatha
Kwadalwa ngo 2024.11.06
Amathangi Okugaywa Kwama-Anaerobic: Umhlahlandlela Wezobunjiniyela, Wokuqamba Nokusebenza
I-Anaerobic Digestion (AD) Tank—evame ukubizwa ngokuthi i-anaerobic reactor—iyisiqukathi esiklanyelwe ukwenza lula ukubola kwezinto eziphilayo ngaphandle komoya-mpilo. Lezi ziqukathi yizona ezibalulekile ezindaweni zokukhiqiza igesi yebhayoloji, izitshalo zokwelapha amanzi amdaka, kanye nezindawo zokucubungula udoti wezimboni, okuguqula udoti, udoti wezolimo, noma udoti wokudla ube amandla avuselelekayo (igesi yebhayoloji) kanye ne-digestate enothile ngamaminerali. Impumelelo ekwakhiweni kwe-AD tank idinga ukugxila ekuqinekeni komqeqeshi, ukuphathwa kahle kwegesi elonakalisayo, kanye nokuxubana okuhle kwezinto eziphilayo.
1. Isimiso Esiyinhloko Sobunjiniyela
Ukugaywa kwama-anaerobic kuyinqubo yezinto eziphilayo ezinezinyathelo eziningi (i-hydrolysis, i-acidogenesis, i-acetogenesis, kanye ne-methanogenesis). Ukuze kugcinwe leli bhalansi elibucayi, ithangi kumele lihlinzeke ngendawo elawulwayo, evaliwe ngokuphelele.
Izinto Ezibalulekile Zokuqamba
● Isikhathi Sokugcinwa: Ithangi kumele libe nosayizi osuselwe ku-Hydraulic Retention Time (HRT) edingekayo ukuze umthwalo othize ugaywe ngokuphelele.
● Ukulawulwa Kwezinga Lokushisa: Amathangi okugaya asebenza ezingeni le-mesophilic (cishe u-35°C) noma i-thermophilic (cishe u-55°C). Amathangi anomshukela kanye nezingqimba zokushisa ezihlanganisiwe zivame ukudingeka ukuze kugcinwe lezi zingqimba zokushisa.
● Ukuvaleka Kahle Kwama-Gas: Njengoba le nqubo ikhiqiza i-methane (CH4) ne-carbon dioxide (CO2), ithangi kumele ivalwe ngokuphelele ukuze kuvinjelwe ukuvuza kwama-gas futhi kuqinisekiswe ukuqoqwa okuphephile ukuze kukhiqizwe amandla.
2. Izinto Zokwakha Nokwakhiwa: Inkinga Yokugqwala
Ukubola kwe-anaerobic kudala imvelo enolaka kakhulu. I-biogas ivame ukuba ne-hydrogen sulfide (H2S), lapho ihlangana nomswakama, yenza i-sulfuric acid. Le acid ihlasela kakhulu insimbi evamile ye-carbon futhi yonakalise ukhonkolo ngokuhamba kwesikhathi.
Ukuqhathaniswa Kokusebenza Kwezinto
Impahla Yetangi | Ukumelana Nokugqwala | Izidingo Zokulungisa | Izindleko Zokwakha | Ukusetshenziswa Okungcono Kakhulu |
I-Glass-Fused-to-Steel (GFS) | Kakhulu (Akusebenzi) | Phansi Kakhulu | Phakathi | Ezamabhizinisi & Ezomphakathi |
Ukhonkolo Olwakhiwe Endaweni | Phakathi (Idinga Umugqa) | Phezulu (Imigqa Iyahluleka) | Phezulu | Imisebenzi emikhulu yomphakathi |
Insimbi Engagqwali | Phezulu Kakhulu | Phansi | Phezulu Kakhulu | Okukhethekile/Okuhlanzekile Kakhulu |
Insimbi Ye-Carbon | Phansi | Phezulu Kakhulu (Ukugqoka) | Phansi | Okwesikhashana/Okwezinga Eliphansi |
Inothi Labaqeqeshi: Amathangi e-GFS ase enze isilinganiso semboni sezicelo ze-AD ngoba ukugqoka kwengilazi akunangqondo ngokwemvelo, kumelana ne-sulfuric acid ekhiqizwa ngesikhathi senqubo yokubola ngaphandle kwesidingo sokugqoka njalo.
3. Ingqalasizinda Yokusebenza Nezinsiza
Ithangi le-AD elisebenza kahle lidlula nje ukuba yisiqu; ludinga izinhlelo ezihlanganisiwe ukuze kukhuliswe kakhulu ukukhiqizwa kwegesi:
1. Izinhlelo zokuxuba: Noma ngabe kusetshenziswa izinjini zokuxuba ngomshini, ukujikeleza kwegesi, noma ukuxuba ngomshini wokumpompa amanzi, umgomo uwukuvimbela ukwahlukana (ukwakheka kobubende phezulu nokuqoqeka kwesihlabathi phansi).
2. Ukuqoqwa kukagesi we-biogas: Uphahla kumele luklanywe ukuze luqoqe igesi. Amathangi esimanje avame ukusebenzisa izikhwama zegesi ezimbili eziboshwe phezu kwethangi ukuze zinikeze isitoreji esiguquguqukayo segesi ye-biogas ekhiqiziwe.
3. Izimbobo zokudla nokukhipha: Ukubekwa kwamasu ezimbobo zokungena nokuphuma kuqinisekisa izimo "zokuhamba okuyisigamu" noma "ezixutshwe ngokuphelele" njengoba kudingwa umklamo wenqubo.
4. Imibuzo Evame Ukubuzwa (FAQ)
Q: Kungani amathangi e-AD ehluleka ngaphambi kwesikhathi?
A: Izinkinga eziningi zibangelwa ukubola kwamakhemikhali (kusuka ku-H2S) noma ukuxubeka okungalungile. Uma uhlelo lokuxubeka luhluleka, izinto eziqinile ziqongeleleka futhi kukhona "izindawo ezifile" ezakhekayo, okuholela ekugayeni okungalingani nasezingcindezi zesakhiwo.
Q: Ingabe itangi likakhonkolo lingasetshenziswa ku-AD?
A: Yebo, kodwa idinga ukugqokiswa okukhethekile okumelana ne-acid ngaphakathi. Ngokuhamba kwesikhathi, lezi zigqoko zivame ukuqhekeka noma ukukhuluma, okuholela ekuboleni kukakhonkolo. Izindawo eziningi manje sezilungisa amathangi kakhonkolo ahlulekayo ngezingxenye ze-GFS noma izigqoko ezikhethekile.
Q: Ngingalindela ukuthi ngithole i-biogas engakanani etangini lami?
A: Lokhu kuncike ngokuphelele ku-"organic loading rate" nohlobo lokudla (isibonelo, udaka lwezindlelu lukhiqiza kancane kunezijobelelo zokudla). Amandla e-biogas akalwa ngama-cubic meters egazi nge-ton yamavolatile solids.
5. Izincomo Zokugcinwa Okuhle
● Ukuqapha i-H2S: Qapha njalo ukwakheka kwegesi. Amazinga aphezulu e-H2S awagcini nje ngokudala ukubola kodwa angavimbela namagciwane akhiqiza i-methane.
● Ukuphathwa Kukadoti: Faka izinsolo ezijwayelekile ezibonakalayo noma ezisekelwe enzwa phezu kwamanzi ethangi ukuphatha ukwakheka kobumba/kadoti, okungavimba ukukhishwa kwegesi.
● Ukukhululwa Kwengcindezi: Qinisekisa ukuthi ama-valve okukhululwa kwengcindezi/okungena komoya (PVRVs) ayahlolwa njalo ngonyaka ukuvimbela ingcindezi eyeqile noma ukugoba kwethangi ngenxa yezimo zokungena komoya.
Ukuklanywa nokucaciswa kwethangi le-Anaerobic Digestion kudinga ukulinganisela phakathi kokuqina komzimba nokumelana namakhemikhali. Ngokukhetha izinto ezifana ne-Glass-Fused-to-Steel ezingamelana nezindawo ezinama-acid futhi ziqinisekise ukuxubeka okuqinile nokuphathwa kwegesi, abasebenzisi bangafinyelela ukusebenza isikhathi eside nokukhiqizwa kwamandla.
Ngabe njengamanje usayizi ithangi lomjikelezo othile wenkunkuma, noma ngabe uhlola izinto zokuthuthukisa isitshalo esikhona?
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