Amathangi Okulima Izinhlanzi: Umhlahlandlela Wobunjiniyela Nokukhethwa Kwezinto
Kwadalwa ngo 2024.03.24
Amathangi e-Aquaculture: Umhlahlandlela Wokuklama Nokukhetha Izinto
Ithangi lokulima izilwane zasemanzini liyisiqukathi esikhethekile esiklanyelwe ukusekela ukukhula nempilo yezilwane zasemanzini, kusukela ezincane kuya ezinhlanzini ezilungele ukuvunwa. Ngokungafani neziqukathi ezijwayelekile zokugcina amanzi, amathegi okugcina izilwane zasemanzini kumele alinganise izidingo eziyinkimbinkimbi zezinto eziphilayo—njengokuhamba kwamanzi, ukususwa kwemfucumfucu, nokuhambisana kwezindawo ezinganabo ubuthi—nokuhlala isikhathi eside kwamandla okwakhiwa. Noma ngabe isetshenziselwa ukulima okujulile okujwayelekile noma izinhlelo ezithuthukisiwe zokugaywa kabusha kwamanzi (RAS), ukukhethwa kwempahla kanye nesakhiwo sokwakhiwa kuyinto ebaluleke kakhulu ekukhiqizeni okusebenzayo nasekuvimbeleni izifo.
1. Ukuklama Kwezinto: Ukukhetha Ubuso Obufanele
Imvelo engaphakathi ethangini lokulima izilwane zasemanzini ifuna kakhulu ngamakhemikhali. Impahla ekhethiwe kufanele ingabi namthelela, ibe lula ukuyihlanza, futhi ibe namandla ngokwakhiwa okubhekana nomfutho omkhulu wamanzi.
● I-Fiberglass Reinforced Polyester (FRP/GRP): Yiyona ejwayelekile embonini yokulima izilwane zasemanzini ezohwebo. Amathangi e-FRP awanazo izimbotshana, alula, futhi angabunjwa abe izimo ezibushelelezi, eziyindilinga ezikhuthaza ukuhamba kwamanzi okuzihlanza. Azweli kakhulu ku-UV nasekuwohlokeni ngosawoti.
● I-High-Density Polyethylene (HDPE): Enye indlela ethandwayo engabizi kakhulu. Ngenkathi i-HDPE iqinile futhi ayizweli kumakhemikhali, ingaba sengcupheni yokugoba ngaphansi kokushisa okwedlulele noma imithwalo emikhulu yakwakhiwo uma iqhathaniswa ne-fiberglass eqiniswe ngayo.
● Ukhonkolo: Ngokuvamile ugcinelwa amachibi amakhulu okukhulisela izilwane zasemanzini, afakwe unomphela. Ngenkathi ukhonkolo uqinile kakhulu, udinga imihlobiso ekhethekile yezinga lokudla ukuze uvimbele ukuvuza futhi kunzima ukuwuhlanza uma kuqhathaniswa neplastiki eyenziwe ngomumo noma i-fiberglass.
Isiqhathaniso sezinto ezisetshenziswayo
Isici | I-Fiberglass (FRP) | HDPE | Ukhonkolo |
Ukuqina | Kuhle kakhulu | Kulinganiselwe | Kuphezulu kakhulu |
Ukucoceka (Ukuhlanza) | Okungcono kakhulu (Okubushelelezi) | Kuhle | Kulinganiselwe (Okunomgodi) |
Ukufakwa | I-Modular/Kulula | Kulula | Kudinga Umsebenzi Omningi |
Izindleko | Phezulu | Phansi-Phakathi | Phakathi (Kudinga Umsebenzi Omningi) |
Okusetshenziswa Kahle Kakhulu | Izindawo Zokuzalela Izinhlanzi, I-RAS, Eziningi | Izinhlelo Ezincane/Eziphakathi | Izindawo Ezinkulu Zokukhulisa Izinhlanzi |
2. Idizayini Ye-Hydraulic Ne-Geometry
Ukwakheka kwethangi kubalulekile ukuthi udoti (izinto ezingadliwe, ukudla okungadliwe) ususwa kanjani ngempumelelo ohlelweni.
● Amata-anki Ayindilinga: I-geometry ekhethwayo ezindaweni eziningi zokulima eziningi. Ukwakheka okuyindilinga kwenza kube lula ukudala "umphumela we-teacup", lapho amanzi ejikeleza ukuze agxile izinto ezindaweni ezimile, kuqinisekiswe amazinga aphezulu okuhlanzeka.
● Amata-anki Ayisikwele Anamakhona Ayindilinga: Lezi zinikeza ukusetshenziswa okungcono kwezindawo ngaphakathi kwezakhiwo kunezinga-anki ayindilinga kodwa zidinga ubunjiniyela bokugeleza kwamanzi obunembayo ukuze kugwenywe "izindawo ezifile" lapho kunqwabelana udoti.
● Umgxobhozi Nokudonsa Amanzi: Ithangi eliklanywe kahle linezansi eligobekile (ngokuvamile u-3–5%) elibheke endaweni yokudonsa amanzi emaphakathi. Ukususwa kwemfucumfucu okusizwa amandla adonsayo kubalulekile ukugcina ikhwalithi yamanzi ezinhlelweni ezinomthamo omkhulu.
3. Ukuhlanganisa nezinhlelo ze-Recirculating Aquaculture Systems (RAS)
Ezokulima zesimanje ezinomthamo omkhulu, amathangi okudoba ngokuvamile ayingxenye ye-RAS. Kulezi zinhlelo, ithangi akuyona nje isitsha; yiyona "inhliziyo yezinto eziphilayo" yesikhungo.
1. Ukujikeleza Nsuku zonke: Amathangi e-RAS adinga amazinga aphezulu okushintsha amanzi—okungcono kakhulu umthamo wonke we-tank uphathwe futhi ujikelezwe okungenani kanye ngehora.
2. Ukufaka Umoya: Ezindaweni ezinomthamo omkhulu, amathangi kufanele afakwe izinhlelo ezikhethekile zokufaka umoya noma ukujova umoya-mpilo ukuze kugcinwe amazinga e-Dissolved Oxygen (DO) angaphezu kuka-5-6 mg/L, njengoba amazinga okushintsha komzimba wezinhlanzi enyuka ngokushesha ngokushisa.
3. Ezokuphepha kwezinto eziphilayo: Ngoba amathangi e-RAS avame ukuba ngaphakathi noma avaliwe, ahlinzeka ngendawo evaliwe evimbela ukungena kwezifo zangaphandle nezilwane ezizingelayo, kunciphisa kakhulu ingozi yemicimbi yokufa ngobuningi.
4. Imibuzo Evame Ukubuzwa (FAQ)
Q: Kungani amathangi ayisikwele noma ayisiyingi ngokuvamile engakhuthazwa ekulinyweni kwezilwane zasolwandle?
A: Amathangi ayisikwele noma ayisikwegi avame ukuthola "izindawo ezifile" emakhoneni lapho isivinini samanzi siyehla. Lezi zindawo ziba izindawo ezishisayo zokwakheka kwe-ammonia nokukhula kwamagciwane e-anaerobic, okungacindezela izilwane futhi kuholele ekugqashukeni kwezifo.
Q: Ingabe isitifiketi sezinto "ezisezingeni lokudla" siyadingeka kuwo wonke amathangi ezinhlanzi? "
A: Yebo. Noma ngisho nezinhlanzi zokuhlobisa ezingadliwa, izinto ezisezingeni lokudla ziqinisekisa ukuthi ithangi akukho ukudonswa kwama-plasticizers, amatshe asindayo, noma izinto ezingaphefumuliyo ezingaphefumuliyo (VOCs) ezingaba yingozi ezimpilweni zasemanzini noma eziqoqekayo ezicutini ezidliwayo.
Q: Ngikhetha kanjani ivolumu yethangi elilungile? "
A: Ivolumu yethangi kufanele inqunywe ngesisindo sakho esihloselwe ukuvuna kanye nokuminyana kwezilwane. Umthetho wesithupha ukubala ubukhulu obungaba khona bokuminyana kwe-biomass (isibonelo, 50–100 kg/m³) bese ukala ithangi ukuze usekele lokho kuminyana ngaphandle kokudlula amandla okuhlunga we-RAS yakho.
Ukuphumelela kokusebenza kwakho kwe-aquaculture kuqala ethangini. Noma ngabe ukhulisa i-hatchery noma wakha indawo yokukhulisa enobuningi obuphezulu, ukubeka phambili amathangi e-fiberglass aqedwe kahle anokugeleza kwamanzi okusebenzayo kuzonikeza imiphumela emihle yesikhathi eside. Ngokugxila ekucocekeni kwezinto kanye nomklamo we-hydraulic, unciphisa ubungozi besifo futhi wandise ukuphuma kwe-biomass ohlelweni lwakho.
Ingabe usezigabeni zokuhlela indawo entsha ye-aquaculture, noma ngabe ufuna ukulungisa ipulazi elikhona ukuze usuke emachibini endabuko uye ku-RAS enobuningi obuphezulu?
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