Zinyalala Za Biogas Kuti Zikonze Njira Yothira feteleza

Ngakhale kulima nkhuku kwakhala kukuchulukirachulukira ku Africa mzaka zapitazi, zakhala zikuchitika pang'onopang'ono. M'zaka zingapo zapitazi, yakhala bizinesi yayikulu, pomwe achichepere ambiri achichepere amayang'ana phindu lokongola. Ziweto za nkhuku zopitilira 5 000 tsopano ndizofala koma kusunthira kwakukulu kwadzetsa nkhawa pagulu pankhani yotaya zinyalala moyenera. Magaziniyi, yosangalatsa, imaperekanso mwayi wamtengo wapatali.

Kupanga kwakukulu kwakubweretsa zovuta zambiri, makamaka zokhudzana ndi kutaya zinyalala. Mabizinesi ang'onoang'ono samakopa chidwi chambiri kuchokera kwa oyang'anira zachilengedwe koma machitidwe amabizinesi omwe ali ndi zovuta zachilengedwe amafunika kutsatira miyezo yofananira yachitetezo cha chilengedwe. 

Chosangalatsa ndichakuti, vuto la zinyalala limapatsa alimi mwayi wothana ndi vuto lalikulu: kupezeka ndi mtengo wamagetsi. M'mayiko ena a ku Africa, mafakitale ambiri amadandaula za kukwera mtengo kwa magetsi ndipo ambiri okhala m'matauni amagwiritsa ntchito ma jenereta chifukwa magetsi ndi osadalirika. Kusintha kwa manyowa onyansa kukhala magetsi pogwiritsa ntchito mankhwala opangira zamoyo zakhala chinthu chosangalatsa, ndipo alimi ambiri akutembenukira kwa iwo. 

Kusandutsa zinyalala kukhala magetsi ndizoposa bonasi, chifukwa magetsi ndi chinthu chosowa m'maiko ena aku Africa. Biodigester ndiyosavuta kuyendetsa, ndipo mtengo wake ndiwololera, makamaka mukayang'ana phindu lakanthawi

Kuphatikiza pakupanga magetsi, zotsalira za biogas, zomwe zimapangidwa ndi biodigester projekiti, zidzawononga chilengedwe molunjika chifukwa cha kuchuluka kwake, kuchuluka kwa ammonia nayitrogeni ndi zinthu zina, komanso mtengo wa mayendedwe, chithandizo ndi kagwiritsidwe ntchito mkulu. Nkhani yabwino ndiyakuti zinyalala za biogas zochokera ku biodigester zili ndi phindu lobwezeretsanso zinthu, nanga tingagwiritse bwanji ntchito zonyansa za biogas?

Yankho lake ndi feteleza wa biogas. Zinyalala za biogas zili ndi mitundu iwiri: imodzi ndimadzi (biogas slurry), yowerengera pafupifupi 88% yathunthu. Chachiwiri, zotsalira zolimba (zotsalira za biogas), zowerengera pafupifupi 12% yathunthu. Pambuyo poti zinyalala za biodigester zatulutsidwa, ziyenera kuzunguliridwa kwakanthawi (kupesa kwachiwiri) kuti zolimba ndi madzi zizisiyanika mwachilengedwe.Olimba - olekanitsa madzi itha kugwiritsidwanso ntchito kupatulira zinyalala zamadzimadzi ndi zotsalira. Biogas slurry imakhala ndi michere monga nayitrogeni, phosphorous ndi potaziyamu, komanso zinthu monga zinc ndi iron. Malinga ndi kutsimikiza kwake, biogas slurry imakhala ndi nayitrogeni wathunthu 0.062% ~ 0.11%, ammonium nayitrogeni 200 ~ 600 mg / kg, phosphorous 20 ~ 90 mg / kg, potaziyamu 400 ~ 1100 mg / kg. Chifukwa cha zotsatira zake zofulumira, kuchuluka kwa michere yogwiritsira ntchito michere, ndipo imatha kutengeka msanga ndi mbewu, ndi mtundu wa fetereza wabwino wambiri mwachangu. Manyowa olimba otsalira a biogas, michere yama michere ndi biogas slurry ali ofanana, okhala ndi 30% ~ 50% ya zinthu zakuthupi, 0.8% ~ 1.5% nayitrogeni, 0.4% ~ 0.6% phosphorus, 0.6% ~ 1.2% potaziyamu, komanso wolemera mu humic acid kuposa 11%. Humic acid imatha kulimbikitsa kupangika kwa magawo amtundu wa nthaka, kukulitsa kusunga nthaka ndi mphamvu, kukonza nthaka ndi mankhwala, kukonzanso nthaka kumawonekeratu. Chikhalidwe cha zotsalira zotsalira za biogas ndichofanana ndi fetereza wamba, chomwe chimakhala ndi zotsatira za feteleza ndipo chimakhala ndi zotsatira zabwino kwanthawi yayitali.

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Kupanga ukadaulo wogwiritsa ntchito biogas slurry kupanga feteleza wamadzi

Biogas slurry imaponyedwa mumakina opanga majeremusi kuti asungunuke ndi kuthira mafuta, kenako ma biogas slurry amalekanitsidwa kudzera pachida cholimba chamadzimadzi. Madzi olekanitsidwa amawapopera mu makina oyambitsa zinthu zina ndi zina zowonjezera feteleza zimawonjezeredwa kuti zitheke. Mavuto amachitidwe amadzimadzi amaponyedwa mu dongosolo lolekanitsa ndi mpweya kuti achotse zosafunika zosungunuka. Madzi opatukana amaponyedwa mu ketulo yoyambira, ndipo zinthu zomwe zimafunikira ndi mbewu zimawonjezeredwa kuti zitheke. Zitachitika izi, madzi a chelate adzaponyedwa mu thanki yomalizidwa kumaliza mabotolo ndi ma CD.

Kupanga ukadaulo wogwiritsa ntchito zotsalira za biogas kupanga fetereza

Zotsalira za biogas zidasakanizidwa ndi udzu, feteleza wa keke ndi zina zomwe zidaphwanyidwa mpaka kukula kwake, ndipo chinyezi chidasinthidwa kukhala 50% -60%, ndipo kuchuluka kwa C / N kudasinthidwa kukhala 25: 1. Mabakiteriya owotchera amawonjezeredwa muzinthu zosakanikirana, kenako amatipanga kukhala mulu wa kompositi, m'lifupi mwake mulibe masentimita awiri, kutalika kwake sikuchepera mita imodzi, kutalika kwake sikuchepa, komanso thankiyo ndondomeko ya nayonso mphamvu ya aerobic itha kugwiritsidwanso ntchito. Samalani kusintha kwa chinyezi ndi kutentha panthawi yamadzimadzi kuti azisunga mpweya mulu. Kumayambiriro kwa nayonso mphamvu, chinyezi chisakhale ochepera 40%, apo ayi sichothandiza pakukula ndi kubereketsa tizilombo, ndipo chinyezi sichiyenera kukhala chokwera kwambiri, chomwe chingakhudze mpweya wabwino. Kutentha kwa mulu kukakwera kufika 70 ℃, the kompositi potembenuza makina ayenera kugwiritsidwa ntchito kutembenuza mulu mpaka utawola kwathunthu.

Kukonza mozama feteleza wambiri

Pambuyo pakupesa ndi kusasitsa, mutha kugwiritsa ntchito zida zopangira feteleza pokonza mozama. Choyamba, amapangidwira feteleza wathanzi. Pulogalamu yaNjira yopangira feteleza wa feteleza ndizosavuta. Choyamba, zinthuzo zimaphwanyidwa, kenako zosayera zimawonetsedwa pogwiritsa ntchitomakina owunikira, ndipo pamapeto pake ma CD amatha kumaliza. Koma kukonza mufeteleza organic feteleza, njira yopanga maginito imakhala yovuta kwambiri, chinthu choyamba kuphwanya, kuwonetsa zosawonongeka, zomwe zimayikidwa ngati granulation, kenako ma particles a kuyanika, kuzirala, zokutira, ndipo pamapeto pake malizitsani kulongedza. Njira ziwiri zopangira zili ndi maubwino ndi zovuta zawo, njira yopangira feteleza wa feteleza ndiyosavuta, ndalamazo ndizochepa, zoyenera fakitale yatsopano ya feteleza,ndondomeko yopanga feteleza wa feteleza ndizovuta, ndalama zake ndizokwera, koma feteleza wamagulu osavuta ndiosavuta kuphatikizira, kugwiritsa ntchito ndikosavuta, phindu lazachuma ndilopamwamba. 


Nthawi yamakalata: Jun-18-2021