Ma nā puʻu o Crestview Valley, ua ulu maikaʻi kahi mahiʻai ʻohana i kapa ʻia ʻo Green Pastures ma lalo o nā lima makaʻala o ke kanaka mahiʻai makua ʻo David Thompson a me kāna kaikamahine ʻo Emily. Hoʻoulu lākou i nā hua ʻai ikaika o ke kulina, soybeans, a me nā ʻano mea kanu like ʻole, akā e like me nā mea mahiʻai he nui, ua hakakā lākou me nā ikaika ʻike ʻole o ke ʻano. ʻO nā pōʻino, ka maloʻo, a me ka wā ʻike ʻole ʻia nā pilikia a lākou i kū mau ai. Eia naʻe, ʻo ka maikaʻi o kā lākou lako wai ka mea i hopohopo nui iā lākou.
ʻO ke awāwa ʻo Crestview ka home o kahi loko iʻa mālie i hānai ʻia e kahi kahawai liʻiliʻi, ʻo ia ke koko ola no Green Pastures. No ka mālama ʻana i ke olakino o kā lākou mau mea kanu, ua ʻike ʻo David he mea nui ka mālama ʻana i ke kiʻekiʻe o ka wai, akā ʻaʻohe ona ala hilinaʻi e ana i nā pae oxygen i hoʻoheheʻe ʻia i loko o ka loko. ʻO nā toxins mai nā ʻāina mahiʻai a puni a me nā hopena o ka hoʻololi ʻana i ke aniau i hoʻoweliweli i ko lākou wai, i hoʻopilikia pololei i kā lākou hua. No ka huhū a me ka hopohopo e pili ana i ke olakino o kā lākou mea kanu, ua hoʻohana pinepine ʻo David i nā hola e hoʻāʻo ai e nānā i ka maikaʻi o ka wai ma ke koho ʻana.
I kekahi ʻauinalā lā, holo maila ʻo Emily i ka puʻu, me ka ʻoliʻoli e pahola ana mai kona mau maka. "E Pāpā, ua lohe au e pili ana i kēia mau mea hoʻoheheʻe oxygen dissolved hou! Manaʻo lākou he mau mea hoʻololi pāʻani no ka poʻe mahiʻai e like me mākou!"
Ua hoʻolohe ʻo David i ka wehewehe ʻana o Emily i ka hana ʻana o kēia mau mea ʻike. ʻAʻole e like me nā hoʻokolohua kemika kuʻuna i hāʻawi i nā hopena lohi a koi ʻia ka ʻike, hāʻawi nā mea ʻike o ka oxygen dissolved optical i ka heluhelu mau ʻana. Ua hoʻohana lākou i ka ʻenehana kiʻekiʻe e ana i ka mālamalama i hoʻomoʻa ʻia e nā moleke oxygen i loko o ka wai, e hāʻawi ana i ka poʻe mahiʻai i ka ʻikepili manawa maoli e pili ana i ko lākou ʻano wai. Paipai ʻia e kēia ʻike, ua hoʻoholo lākou e hoʻokomo i kahi sensor.
He ʻIke Hoʻololi
Me ka optical dissolved oxygen sensor i hoʻokomo ʻia ma kahi kokoke i ka loko iʻa, nānā ʻo Emily i ka ʻikepili ma kāna kelepona. I ka lā mua loa, ua ʻike lākou he haʻahaʻa ka pae o ka oxygen dissolved ma mua o ka maikaʻi. Me kēia ʻike, ua hana wikiwiki ʻo Emily lāua ʻo David, me ka hoʻohui ʻana i nā aerators i ka loko. I loko o kekahi mau lā, hōʻike ka sensor i ka piʻi ʻana o nā pae oxygen.
I ko lākou nānā ʻana i ka wai i nā pule e hiki mai ana, ua kōkua ka sensor iā lākou e ʻike i nā ʻano a me nā hoʻololi o ke kau. I ka hopena o ke kauwela, i ka wā i hoʻomaka ai ka mehana o ka wai, ʻike lākou i ka emi ʻana o ka oxygen dissolved. ʻO kēia ka mea i hoʻoikaika iā lākou e hoʻokomo i nā mea kanu malu a puni ka loko iʻa no ka hoʻomaʻalili ʻana i ka wai, e hana ana i kahi noho maikaʻi no ke ola wai a me ka hōʻoia ʻana e loaʻa i kā lākou mau mea kanu ka maikaʻi o ka wai.
ʻOhi nui
Ua ʻike ʻia nā pōmaikaʻi maoli o ka sensor i ka wā ʻohi. Ua ulu nā mea kanu e like me ka wā ma mua, me nā ʻōmaʻomaʻo e kū kiʻekiʻe ana ma ke kua o ke awāwa. Ua hōʻiliʻili ʻo David lāua ʻo Emily i kā lāua hua maikaʻi loa i nā makahiki-ʻo ke kulina ikaika, olakino a me nā mea kanu ʻono i hoʻāla i ka hauʻoli ma ka mākeke o ka poʻe mahiʻai. Ua hele mai ka poe mahiai mai na mahinaai kokoke mai e a'o i ko lakou mea huna.
"Ka maikaʻi o ka wai! E pili ana i ka oxygen i loko o ka wai," wahi a Emily me ka haʻaheo. "Me kā mākou optical dissolved oxygen sensor, hiki iā mākou ke pane koke i nā loli. Ua kōkua ia iā mākou e mālama i kahi kaiaola holomua."
I ka laha ʻana o ka ʻōlelo ma ke awāwa ʻo Crestview, ua hoʻomaka ka poʻe mahiʻai i ka ʻenehana. Ua loaʻa i ke kaiāulu kahi ʻōnaehana kākoʻo hou kahi i kaʻana like ai lākou i ka ʻikepili a me nā hana maikaʻi loa. Ua hana lākou i kahi pūnaewele ʻike ʻole e kūkākūkā ai i ka maikaʻi o ka wai a me kona hopena hiki ʻole ke hōʻole ʻia i ke olakino hua. ʻAʻole lākou i hakakā wale i kā lākou hakakā ʻana; akā, he ʻāpana lākou o ka neʻe nui ʻana i ka hoʻomau a me ke kūpaʻa.
ʻO ka wā e hiki mai ana
He mau mahina ma hope mai, i ka huli ʻana o nā kau a hoʻomākaukau ka mahiʻai no ka hoʻoilo, ua noʻonoʻo ʻo David i ka lōʻihi o ko lākou hele ʻana. ʻAʻole i hoʻololi wale ka optical dissolved oxygen sensor i kā lākou mau hana mahiʻai akā ua hana pū kekahi i nā pilina mau i loko o ko lākou kaiāulu. Ua oi aku lakou mamua o ka poe mahiai i keia manawa; he mau puuku lakou no ke kaiapuni, me ka hoomalu ana i ko lakou wai, mea kanu, a me ka aina a lakou i aloha ai.
Me ka haʻaheo, ua ʻākoakoa ʻo David lāua ʻo Emily ma ka ʻaoʻao o ka loko iʻa, e nānā ana i ka napoʻo ʻana o ka lā ma luna o ka wai ikaika. Ua ola ka ea me nā leo o ke ʻano, a kū ikaika nā mea kanu ma nā kula ma hope o lākou. Ua ʻike lākou ua hana lākou i nā ʻanuʻu koʻikoʻi i ka wā e hiki mai ana - kahi i alakaʻi ʻia ai ka wai maikaʻi i nā mea kanu olakino, e hōʻoia ana i ka lōʻihi o kā lākou mahiʻai no nā hanauna e hiki mai ana.
ʻI heʻenau tuʻu fakataha, naʻe fakaʻaʻataʻi ʻa ʻEmili ki heʻene tamaí, “Ko hai naʻá ne ʻilo ʻe lava ʻe ha kiʻi vakai kiʻi ha meʻa ke fai ha meʻa lahi?”
"I kekahi manawa, ʻo nā hoʻonā maʻalahi loa e paʻa i ka mana nui. Pono mākou e mākaukau e apo aku iā lākou, "i pane aku ai ʻo David, e nānā ana i ka ʻāina ulu me ka manaolana no ka wā e hiki mai ana.
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