Iyini Ithangi Lokugaya Udaka
Kwadalwa ngo 2024.11.22
Iyini Ithangi Lokugaya Udaka?
Ezikhungweni zokuhlanza amanzi amdaka kamasipala nezimboni, ukuhlanzwa kwamanzi kukhiqiza inani elikhulu lezinsalela eziyisigamu eziqinile ezaziwa ngokuthi udaka. Uma lungelashwa, lolu daka olunothe ngezinto eziphilayo ludala izingozi ezinzima zemvelo, iphunga elibi, nezindleko eziphezulu zokulahla. Ukuze kuncishiswe lezi zingozi, izikhungo zokwelapha zithembela ezingqalasizindeni ezikhethekile zokuqukatha.
Ithangi lokugaya udaka liyithangi lezimboni elisindayo, elivaliwe noma elimboziwe eliklanyelwe ukuzinzisa ngokwebhayoloji udaka lwamanzi amdaka. Ngokunikeza indawo elawulwayo yama-microorganisms ukuba ahlukanise izinto eziyinkimbinkimbi eziphilayo—imvamisa ngaphandle komoya-mpilo ngokugaya okungenawo umoya-mpilo—lawa mathangi anciphisa kakhulu umthamo wodaka, aqede amagciwane ayingozi, futhi athwebule i-biogas evuselelekayo ebalulekile.
1. Izimiso Eziyisisekelo Zokusebenza Nezigaba
Amathangi okugaya udaka asebenza ngezinqubo eziyinkimbinkimbi zamakhemikhali eziguqula izinto ezingcolile zikadoti zibe yimikhiqizo eqinile, elawulekayo:
● Ukungabikho Komoya-mpilo (Ukugaya Okungenawo Umoya-mpilo): Amathangi amaningi amakhulu ezimboni agaya ngaphandle komoya-mpilo. Amathangi avaliwe agcina indawo engenawo umoya-mpilo lapho amagciwane akhethekile achuma khona.
● Ukwephuka Kwezigaba Eziningi: Ngaphakathi ethangini, izinto eziqinile eziphilayo zidlula ekuguqulweni kwezinyathelo eziningi: i-hydrolysis yehlisa ama-polymer ayinkimbinkimbi ibe ushukela olula nama-amino acid, i-acidogenesis ne-acetogenesis ziguqula lokho kube ama-organic acid, futhi i-methanogenesis ekugcineni iwaguqula abe i-methane ne-carbon dioxide.
● Ukuqoqwa Nokusetshenziswa Kwe-Biogas: Ukwephuka kwezinto eziphilayo kukhiqiza i-biogas (ngokuvamile i-methane engu-60% kuya ku-70%), ethathwa ngokuphephile ophahleni lwethangi elingangeni moya ukuze inikeze amandla kuma-boiler ezimboni, izinjini ezikhiqiza amandla kanye namasistimu okushisisa.
● Ukulawula Ukushisa: Amathangi avame ukugcinwa ezingeni elithile lokushisa—njenge-mesophilic (95°F–100°F / 30°C–39°C) noma i-thermophilic (49°C–57°C)—ukukhulisa izinga lokugaya amagciwane nokubulala izinambuzane ezincane.
2. Izinzuzo Eziyinhloko Zokwakhiwa Kokugaya Udaka
● Ukuncishiswa Okukhulu Kwevolumu Nesisindo: Ukugaya kwehlisa kuze kufike ku-50% wezinto eziqinile eziphilayo, kunciphisa kakhulu isisindo nevolumu kadaka elihlelelwe ukupheliswa kokuphela nokulahlwa.
● Ukukhiqizwa Kwezamandla Avuselelekayo: Ukuthwebula igesi yebhayogesi ecebile nge-methane kuguqula umthwalo wokulawula imfucuza ube umthombo wamandla wasendaweni, kwehlisa izindleko zokusebenza kwesikhungo.
● Ukulawula Iphunga Nezinto Ezibangela Izifo: Ukuzinzisa ngokwebhayoloji kuqeda izinto eziphilayo ezibolayo, kuthulisa amaphunga amabi futhi kubhubhise amagciwane ayingozi ukuze kukhiqizwe umquba ophephile wezolimo osuswa emanzini angcolile.
Ithebula Lokuqhathanisa: Ubuchwepheshe Bamatangi Okulawula Udaka
Isilinganiso Sokuhlola | Amatangi Okugaya Udaka Ngaphandle Komoya (Anaerobic) | Aerobic Digestion Tanks | Amatangi Okubamba Udaka |
Inqubo Eyisisekelo Yezinto Eziphilayo | Ukubola kwama-microbial ngaphandle komoya-mpilo; kukhiqiza i-biogas | Ukungena komoya okunwetshiwe nokunikezwa komoya-mpilo; akukho ukukhiqizwa kwe-biogas | Akukho; asetshenziselwa ukulinganisa okwesikhashana nokujiyisa |
Iphrofayili Yamandla | Ikhiqiza amandla (ikhiqiza igesi yemethane evuthayo) | Ukusetshenziswa kwamandla okuphezulu ngenxa yamafeni aqhubekayo okungenisa umoya | Ukusetshenziswa kwamandla okuphansi (izinto zokuxuba noma izindlela ezilula zokukhipha amanzi kuphela) |
Ukuncishiswa Kwezinto Eziqinile Eziphilayo | Ukuncishiswa okuphezulu (40% kuya ku-50%) | Ukuncishiswa okuphakathi; kudinga izindawo ezinkulu zamathangi | Ukuncishiswa okuncane kakhulu; ukwehlukaniswa ngokomzimba nokugcinwa kuphela |
Izidingo Zokwakha | Amathangi avaliwe angangeni umoya anezinto zokushisisa nokuxuba | Amathangi avulekile noma avaliwe afakwe amagridi amakhulu okungenisa umoya | Amagobolondo ajwayelekile kakhonkolo noma ensimbi ehlanganisiwe okugcina |
Imibuzo Ejwayelekile (FAQ)
Umbuzo: Iyini injongo eyinhloko yethangi lokugaya udaka?
Impendulo: Ithangi lokugaya udaka lisetshenziswa ekuhlanzeni amanzi angcolile ukuze kuzinziswe ngokwebhayoloji udaka oluphilayo, kuncishiswe umthamo wokuqina, kuqedwe amagciwane, futhi kuthathwe igesi evuselelekayo (imethane).
Umbuzo: Uyini umehluko phakathi kwamathangi okugaya udaka anomoya (aerobic) nalawo angenawo umoya (anaerobic)?
Impendulo: Ama-anaerobic digesters asebenza ezindaweni ezivaliwe, ezingenamoya, ukuze akhiqize igesi futhi adinge ukushisisa, kuyilapho ama-aerobic digesters esebenzisa izinhlelo zokungenisa umoya emazingeni okushisa avamile ngaphandle kokuthola amandla.
Q: Kuthatha isikhathi esingakanani udaka ukuhlala ngaphakathi kuthangi lokugaya?
A: Kuma-digester e-mesophilic avamile anesigaba esisodwa, isikhathi sokugcina amanzi (HRT) ngokuvamile sisukela ezinsukwini eziyi-15 kuye kwezingama-30 ukuze kuqinisekiswe ukuzinza okuphelele kwebhayoloji.
Q: Yiziphi izinto ezisetshenziswayo ukwakha amathangi esimanje okugaya udaka?
A: Amathangi esimanje okugaya akhiwa ngokhonkolo oqinisiwe we-reinforced concrete noma amaphaneli ensimbi ahlanganisiwe (anjenge-Glass-Fused-to-Steel) anokumelana nokugqwala okuphezulu kumagesi e-anaerobic ne-hydrogen sulfide.
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