ʻO Optical Dissolved Oxygen (ODO) sensors, i ʻike ʻia he fluorescence-based sensors, he ʻenehana hou i hoʻohālikelike ʻia me nā hana electrode membrane kuʻuna (Clark cell). ʻO kā lākou hiʻohiʻona nui ka hoʻohana ʻana i ka fluorescence quenching e ana i ka neʻe ʻana o ka oxygen dissolved i ka wai.
Kuʻuna Hana:
Uhi ʻia ka piko o ka mea ʻike me ka membrane i hoʻopili ʻia me ka wai kala fluorescent. Ke hoʻohauʻoli ʻia kēia mea pena e kekahi lōʻihi nalu kikoʻī o ke kukui uliuli, hoʻopuka ia i ke kukui ʻulaʻula. Inā loaʻa nā molekole oxygen i loko o ka wai, hui pū lākou me nā molekala wai hoʻohiwahiwa, e hōʻemi ana i ka ikaika o ka fluorescence a me ka pōkole o ke ola fluorescence. Ma ke ana ʻana i kēia hoʻololi ʻana i ke ola fluorescence a i ʻole ka ikaika, hiki ke helu pololei ʻia ka neʻe ʻana o ka oxygen dissolved.
Nā ʻano nui:
- ʻAʻohe oxygen hoʻohana, ʻaʻohe electrolyte:
- ʻO kēia ka ʻokoʻa nui loa mai ke ʻano electrode membrane. ʻAʻole ʻai nā mea ʻike maka i ka oxygen mai ka hāpana, e hāʻawi ana i nā hopena pololei, ʻoi aku hoʻi i nā kino wai kahe haʻahaʻa.
- ʻAʻohe pono e hoʻololi i nā electrolytes a i ʻole nā membrane, e hōʻemi nui i ka mālama.
- Mālama haʻahaʻa, kūpaʻa kiʻekiʻe:
- ʻAʻohe pilikia me ka hoʻopaʻa ʻana o ka membrane, ka make ʻana o ka electrode, a i ʻole nā pilikia electrolyte.
- Ka lōʻihi o ka calibration, koi pinepine i ka calibration i kēlā me kēia mau mahina a ʻoi aku paha.
- Pane wikiwiki a me ka pololei kiʻekiʻe:
- Pane wikiwiki loa i nā loli o ka oxygen dissolved, hiki ke hopu i ka manawa maoli i nā loli maikaʻi o ka wai.
- ʻAʻole pili nā ana i ka wikiwiki o ke kahe ʻana a i ʻole nā mea hoʻopili e like me ka sulfides, e hāʻawi ana i ka pololei a me ka paʻa i hoʻohālikelike ʻia i nā ʻano kuʻuna.
- ʻO ka liʻiliʻi o ka holo lōʻihi:
- Paʻa loa nā waiwai o ka wai kala fluorescent, ka hopena i ka neʻe ʻana o ka hōʻailona liʻiliʻi a me ka hōʻoia ʻana i ka hilinaʻi o ke ana lōʻihi.
- Maʻalahi o ka hoʻohana ʻana:
- Hoʻopili maʻamau a pāʻani, ʻaʻohe manawa polarization lōʻihi e pono ai ma hope o ka hoʻomaka ʻana; mākaukau no ke ana koke ʻana.
Nā hemahema:
- ʻOi aku ke kumu kūʻai mua: ʻoi aku ka nui o ke kumukūʻai ma mua o nā mea ʻike electrode membrane kuʻuna.
- Loaʻa i ka Fluorescent Membrane kahi ola pau ʻole: ʻOiai lōʻihi (maʻa mau 1-3 mau makahiki), e hoʻoneʻe ʻia ka membrane a i ʻole e hoʻoheheʻe ʻia a pono e hoʻololi.
- Hiki ke hoʻoheheʻe ʻia e nā ʻaila a me nā Algae: ʻO ka uhi nui ʻana o ka ʻaila a i ʻole biofouling ma ka ʻili o ka sensor hiki ke hoʻopilikia i ka hoʻoulu māmā a me ka hoʻokipa ʻana, pono e hoʻomaʻemaʻe.
2. Nā Kūlana Noi
Ma muli o ko lākou mau hiʻohiʻona maikaʻi loa, hoʻohana nui ʻia nā sensor oxygen dissolved optical i nā ʻano āpau e koi ana i ka nānā mau ʻana a me ka pololei DO.
- Nā mea kanu hoʻomaʻemaʻe wai ʻino:
- He noi koʻikoʻi. Hoʻohana ʻia e nānā i ka DO i loko o nā pahu aeration a me nā ʻāpana aerobic/anaerobic e hoʻomaikaʻi i ka aeration, e ʻae i ka mana pololei no ka mālama ʻana i ka ikehu a hoʻomaikaʻi i ka maikaʻi o ka mālama ʻana.
- Ka nānā ʻana i ke kino wai maoli (nā muliwai, nā loko, nā loko wai):
- Hoʻohana ʻia i nā keʻena kiaʻi kaiapuni e loiloi i ka hiki ke hoʻomaʻemaʻe ponoʻī o ke kino wai, ke kūlana eutrophication, a me ka hypoxia hiki ke hāʻawi i ka ʻikepili no ka pale ʻana i ke kaiaola.
- Aquaculture:
- ʻO DO ka laina ola o ka mahiʻai. Hiki i nā mea ʻike maka i ka nānā ʻana i 24/7 i loko o nā loko a me nā pahu. Hiki iā lākou ke hoʻāla i nā ʻōhumu a hoʻāʻo i nā aerators ke hāʻule haʻahaʻa loa nā pae, pale i ka make ʻana o nā iʻa a me ka mālama ʻana i ka hana.
- ʻImi ʻepekema:
- Hoʻohana ʻia i loko o nā noiʻi moana, nā haʻawina limnological, a me nā hoʻokolohua ecotoxicology kahi e pono ai ka ʻikepili DO kiʻekiʻe a me ka haʻahaʻa haʻahaʻa.
- Ka Wai Hana Hana:
- Ma nā ʻōnaehana e like me ka mea kanu mana a me ka wai hoʻoluʻu mea kanu kemika, ka nānā ʻana iā DO e hoʻomalu i ka ʻino a me ka biofouling.
3. Noi no ka hihia ma ka Philippines
Ma ke ʻano he ʻāina pae ʻāina, hilinaʻi nui ka hoʻokele waiwai o Philippines i ka iʻa a me ka mākaʻikaʻi, ʻoiai ke kū nei i nā pilikia haumia wai mai ke kūlanakauhale. No laila, he mea koʻikoʻi ka nānā ʻana i ka maikaʻi o ka wai, ʻoi loa no ka oxygen dissolved.
Nānā Hiʻohiʻona: Smart DO Monitoring and Aeration System in Laguna de Bay Aquaculture Zones
Ka hope:
ʻO Laguna de Bay ka loko nui loa ma Philippines, me nā wahi e pili ana he mea koʻikoʻi ia no ka mahiʻai iʻa, no ka Tilapia a me Milkfish (Bangus). Eia naʻe, ke kū nei ka loko i nā hoʻoweliweli mai ka eutrophication. I loko o nā mahina kau wela, hiki i ka stratification wai ke alakaʻi i ka hypoxia ma nā papa hohonu, e hoʻomake pinepine ai i nā iʻa nui ("fish kills"), ka hopena i nā poho waiwai nui no nā mahiʻai.
Hoʻonā Noi:
ʻO ka Bureau of Fisheries and Aquatic Resources (BFAR), me ka hui pū ʻana me nā aupuni kūloko, hoʻolaha i ka hoʻohana ʻana i kahi ʻōnaehana nānā ʻana i ka maikaʻi o ka wai naʻauao e pili ana i nā mea ʻike oxygen dissolved i loko o nā mahiʻai kālepa nui a me nā wahi nui o ka loko.
Nā Mea Pūnaehana a me ke Kaʻina Hana:
- Nā Nodes Mākaʻikaʻi: Ua hoʻonohonoho ʻia nā pahu wai maikaʻi o nā ʻāpana he nui me nā mea ʻike DO optical ma nā wahi like ʻole i loko o nā loko iʻa (ʻoi loa ma nā wahi hohonu) a me nā wahi koʻikoʻi o ka loko. Ua koho ʻia kēia mau mea ʻike no ka:
- Haʻahaʻa Maintenance: ʻO kā lākou hana lōʻihi me ka mālama ʻole ʻana he mea kūpono ia no nā wahi me nā limahana loea.
- Kū'ē i ke Keʻakeʻa: ʻAʻole hiki ke hōʻino ʻia mai ka hoʻoheheʻe ʻana i loko o nā wai iʻa iʻa momona a me ka ʻāhuehue.
- ʻIke i ka manawa maoli: hiki ke hāʻawi i ka ʻikepili i kēlā me kēia minuke, hiki ke ʻike wikiwiki i nā hāʻule koke o DO.
- Ka Hoʻouna ʻIkepili: Hoʻouna ʻia ka ʻikepili sensor i ka manawa maoli ma o nā pūnaewele uʻi (e laʻa, GPRS/4G a i ʻole LoRa) i kahi paepae ao a me nā polokalamu kelepona a ka poʻe mahiʻai.
- Ka Mana akamai a me ka ʻōlelo aʻo mua:
- ʻO ka ʻaoʻao ʻaoʻao: Ua hoʻonohonoho ʻia ka paepae ao me nā paepae hōʻailona DO (e laʻa, ma lalo o 3 mg/L).
- ʻaoʻao mea hoʻohana: Loaʻa i ka poʻe mahiʻai nā leka hoʻolohe / ʻike maka, SMS, a i ʻole nā leka uila.
- Manaʻo Aunoa: Hiki i ka ʻōnaehana ke hoʻāla i nā aerators a hiki i ka hoʻihoʻi ʻia ʻana o nā pae DO i kahi pae palekana.
Nā hopena:
- Hoʻemi ʻia ka make ʻana o nā iʻa: ʻO nā ʻōlelo aʻo mua a me ka hoʻoheheʻe ʻana i nā iʻa i pale maikaʻi ʻia i nā hanana pepehi iʻa ma muli o nā pae DO haʻahaʻa haʻahaʻa i ka pō a i ke kakahiaka nui paha.
- ʻOi aku ka maikaʻi o ka mahiʻai: Hiki i ka poʻe mahiʻai ke hoʻokele i ka hānai ʻana a me ka hoʻoulu ʻana ma ke ʻano ʻepekema, e hōʻemi ana i nā kumukūʻai uila (ma ka pale ʻana i ka hana 24/7盲目 o nā aerators) a me ka hoʻomaikaʻi ʻana i ka hoʻololi ʻana i nā meaʻai a me nā helu ulu iʻa.
- ʻIkepili no ka hoʻokele kaiapuni: Hāʻawi nā kikowaena nānā i ka loko i ka BFAR me ka spatiotemporal DO ʻikepili lōʻihi, e kōkua ana i ka nānā ʻana i nā ʻano eutrophication a hoʻokumu i nā kulekele hoʻokele waiwai ʻepekema.
Hōʻuluʻulu manaʻo:
Ma nā ʻāina e ulu ana e like me ka Philippines, kahi e kū ai ka iʻa iʻa i nā pilikia kiʻekiʻe a hiki ke hoʻopiʻi ʻia, ua hōʻike ʻia nā mea ʻike o ka oxygen dissolved optical he mea hana ʻenehana kūpono no ka hoʻokele iʻa a me ka hoʻokele kaiapuni akamai ma muli o ko lākou lōʻihi, mālama haʻahaʻa, a me ka hilinaʻi kiʻekiʻe. ʻAʻole wale lākou e kōkua i ka poʻe mahiʻai e hoʻēmi i nā pilikia a hoʻonui i ka loaʻa kālā akā hāʻawi pū kekahi i ke kākoʻo ʻikepili ikaika no ka pale ʻana i nā kaiaola wai waiwai o Philippines.
Hiki iā mākou ke hāʻawi i nā ʻano hoʻonā like ʻole no
1. ʻO ka mika paʻa lima no ka maikaʻi o ka wai
2. Pūnaehana Buoy lana no ka maika'i o ka wai
3. Palaki hoʻomaʻemaʻe ʻakomi no ka ʻike wai ʻokoʻa
4. Hoʻopiha piha i nā kikowaena a me nā polokalamu uila uila, kākoʻo iā RS485 GPRS / 4g / WIFI / LORA / LORAWAN
No ka SENSOR hou aku ʻike,
e ʻoluʻolu e kelepona iā Honde Technology Co., LTD.
Email: info@hondetech.com
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