Ba tare da wata shakka ba, dukkanmu mun damu matuka da sharar da aka jefa cikin tekuna da tekuna. Wataƙila kun karanta labarai game da nauyin da jiragen ruwa ke da shi a cikin wannan duka. Ba zan zama wanda zai ce ba gaskiya bane, amma kamar kowane aikin ɗan adam yana da tsada ga duniyar. Duk da haka Sashin ne da kansa cewa "don kada a kashe kuzarin da ke sanya ƙwai na zinare" ko saboda sanin muhalli ya sanya batura cikin kuma shine mafi buƙata tare da sarrafa sharar sa.
A ƙasa na yi bayanin yadda ake aiwatar da sabbin dabaru don rage fitar da shara zuwa cikin teku gwargwadon iko.
Ka'idojin sarrafa sharar gida
Har zuwa yanzu, ƙa'idodin da ke jagorantar sarrafa sharar gida a kan jiragen ruwa na ruwa sun haɗa cikin Yarjejeniyar Ƙasa ta Duniya don An yarda da Rigakafin Ruwa na Jirgin ruwa (MARPOL) a 1973 ta Ƙungiyar Maritime ta Duniya (IMO). Kuna iya tunanin cewa tsohon ya daɗe.
Wannan yarjejeniya tana cewa An hana zubar da ruwa da fitar da najasa daga cikin jirgin a cikin mil uku nautical, sai dai idan an yi amfani da waɗannan abubuwan da aka lalata don rage ƙarar su da kawar da gurɓataccen ɗimbin su. Gaskiyar ita ce daga nisan mil 12 na ruwa an sassauta dokokin zubar da shara kuma wannan ƙa'idar ba ta isa ta hana zubar da shara ba tare da kulawa ba. Maimakon haka, dole ne su zama kaftin ɗin kansu, masoyan teku na farko, da kamfanonin da ke yin alƙawarin muhalli. Hakanan kuma dole ne a faɗi, saboda sadaukarwa ga muhalli yana ƙara ƙima ta masu amfani da kiyaye tekuna.
An haramta shi gaba ɗaya jefa cikin teku:
- Robobi, gilashi, ganguna, marufi da kwantena
- Ragowar mai da man fetur ko wasu hydrocarbons
- Ruwan mai
- Abincin yana raguwa ƙasa da mil 12 daga bakin teku
Sauran dabaru don samar da ƙarancin sharar gida akan jiragen ruwa
Costa Cruises kaddamar da wasu shekaru biyu da suka gabata, a cikin Yuli 2016 a rahoton dorewa yana nuna raguwar kashi 4,8% na yawan kuzarin da ake amfani da shi a cikin dukkan jiragen ruwa, da Rage sawun carbon ya kasance kashi 2,3. Wani bayanin da za a lura da shi a cikin wannan rahoton shine tattarawa da dawo da shara ya kai kashi dari. Gaskiya ɗaya da nake so musamman ita ce kusan kashi 70% na ruwan da kuke buƙata a cikin jirgin an samar da shi kai tsaye akan jirgin da kansa.
Carnival, kamfanin jigilar kayayyaki na Arewacin Amurka, baya ga kuma canzawa zuwa sabbin abubuwan mai, dasawa tsakanin manufofin sa dorewar duniya nan da 2020 a cikin layukan jiragen ruwa guda 10, yawanci ke ware makudan kudade a ranar Teku ta Duniya ga duk wata kungiya mai zaman kanta da ke aiki don kiyaye su.
Kuma kasancewa mai sauƙi, yaya game da balaguron jirgin ruwa? A cikin wannan ma'anar, dandamalin Sailsquare, wani nau'in Uber del mar yana sanya abokan hulɗa da shugabannin jirgin ruwa, ya buga wani rahoto da ke nuna cewa tafiya tsakanin Tsibiran Balearic da Sardinia yana adana har zuwa kilo 235 na CO2.
An ƙaddamar da sabon yunƙurin dangane da balaguron fasinja a Japan, shine Aikin Ecoseas na ƙungiya mai zaman lafiya Peace Boat. An ba da shawarar wannan ƙungiya mai zaman kanta a cikin 2008 don samun lambar yabo ta zaman lafiya ta Nobel, kuma ta kwashe shekaru tana yawo da duniya tare da dalilai daban-daban na zamantakewa.
LNG, Liquefied Gas Gas makomar mai a cikin teku
Dokokin kasa da kasa suna daidaitawa, kuma kamfanonin jigilar kayayyaki suna saka hannun jari wajen canza nau'in mai. Yanzu suna nema da yawa ƙarancin gurɓatattun abubuwa kamar LNG, ruwan iskar gas, da wannan man an rage shi da 90% iskar nitrogen oxide da kusan 24% na CO2. Kuna da ƙarin bayani game da wannan nau'in da sauran nau'ikan man fetur waɗanda ke motsa jiragen ruwa na ruwa wannan labarin.