Kahawai wehenā mika kahehe kuleana koʻikoʻi ko lākou i ke ana ʻana i ke kahe ʻana o ka wai ma nā ʻōnaehana i hoʻopaʻa ʻole ʻia e like me nā muliwai, nā ʻauwai wai, nā ʻauwai wai ʻino, a me nā kahawai wai ʻino ʻoihana. ʻO ko lākou ʻano maʻalahi a me ka hiki ke hoʻololi iā lākou ua lilo ia i mea nui loa ma nā ʻano ʻāina like ʻole a me nā ʻano ʻoihana. Aia ma lalo iho nā hihia koʻikoʻi e hōʻike ana i kā lākou noi honua maoli ma ka honua holoʻokoʻa.
1. Ka Hoʻokele Waikahe ma Netherlands: Nā Mita Kahe o ka Radar Doppler
ʻO Netherlands, he ʻāina haʻahaʻa i maʻalahi loa i ke kahe ʻana, hoʻohana i nā mika kahe radar Doppler holomua i loko o kāna pūnaewele nui o nā muliwai a me nā ʻauwai. Ma ka delta Rhine-Meuse, ua hoʻokomo ʻia nā mea ʻike radar ʻaʻole pili (e laʻa, ʻo Teledyne RD Instruments' FlowTrack II) ma nā alahaka a me nā embankments e ana i ka wikiwiki o ke kahe ʻana i ka manawa maoli i ka wā o nā hanana ʻino. Hāʻawi kēia mau mika i ka ʻikepili koʻikoʻi i nā hiʻohiʻona wānana kahe, e hiki ai i nā luna ke hoʻāla i nā ʻōnaehana hoʻolaha mua a hoʻonohonoho i nā pane pilikia. No ka laʻana, i ka wā o nā kahe ʻana o ʻEulopa i ka makahiki 2021, ua kōkua nā mika kahe radar ma ka muliwai ʻo Maas i ka wānana ʻana i nā pae wai me ka pololei ±2%, e ʻae ana i nā kaona e hoʻokuʻu i nā wahi pilikia kiʻekiʻe me ka proactive.
2. Ka Pono o ka Hoʻoinu Wai ma Australia:Nā Mita Kahawai Hāmama Ultrasonic
Ma nā wahi mahiʻai maloʻo o Australia, koi ka nele o ka wai i ka hoʻokele pono ʻana i ka wai. Hoʻohana ka Murray-Darling Basin, kahi wahi hana meaʻai koʻikoʻinā mika kahe kahawai hāmama ultrasonic(e laʻa, ʻo YSI's 6600V2) i hui pū ʻia me nā flumes e ana i ka hoʻolaha ʻana o ka wai ma nā kahawai irrigation. ʻO kēia mau mika, i hoʻokomo ʻia ma nā weirs a me nā hui kahawai, nānā i nā helu kahe me ka pololei ±1%, e hōʻoia ana i ka mālama ʻana o nā mahiʻai i nā quota hoʻokaʻawale wai a hoʻemi i ka ʻōpala. No ka laʻana, ua hōʻike ʻia kahi hihia noiʻi 2022 e ka NSW Department of Primary Industries ua hōʻemi nā mika ultrasonic i ka hoʻohana pono ʻole ʻana i ka wai ma 15% ma nā mahiʻai pulupulu, e hoʻomaikaʻi ana i nā hua o nā mea kanu me ka mālama ʻana i kahi kumuwaiwai kakaikahi.
3. Ka Nānā ʻana i ka Wai ʻŌpala ʻOihana ma Kelemania: Nā Mīkini Kahawai Hāmama Electromagnetic
ʻO nā hale hana hana Kelemania, i kūpaʻa i nā lula kaiapuni koʻikoʻi, hilinaʻi lākou i nā mika kahe kahawai hāmama electromagnetic (e laʻa, ʻo Endress+Hauser's Promag OC) e nānā i ka hoʻokuʻu ʻana o ka wai ʻino. Ma kahi hale hana kaʻa nui ma Bavaria, ua hoʻokomo ʻia kēia mau mika i loko o nā kahawai i uhi ʻia i ka sima e ana i nā kahe kahe a me ka conductivity ma mua o ka mālama ʻana. ʻO ka hiki o nā mika ke lawelawe i nā mea paʻa kiʻekiʻe (e laʻa, nā ʻōpala metala, nā aila) a hāʻawi i ka ʻikepili manawa maoli i nā keʻena kaiapuni e hōʻoiaʻiʻo ana i ka mālama ʻana me ka EU's Water Framework Directive. I ka makahiki 2020, ua ʻike ka ʻōnaehana i ka piʻi koke ʻana o nā pae haumia, e koi ana i nā hoʻoponopono kaʻina hana koke a pale i kahi hanana haumia muliwai.
4. Ka Hoʻokele Wai ʻino ma ke Kaona ma ʻAmelika Hui Pū ʻIa: Nā Mīkini Velocity Doppler Acoustic
ʻO nā kūlanakauhale e like me Los Angeles, i maʻalahi i nā waikahe koke a me ka wai kahe o ke kūlanakauhale, hoʻohana i nā leo leoNā mika wikiwiki Doppler (ADV)(e laʻa, ʻo SonTek's Argonaut-X) i loko o nā ʻauwai wai ua a me nā kīʻaha paʻa. ʻO kēia mau mea lawe lima, i hoʻohana ʻia i ka wā ua nui, e ana i ka wikiwiki o ka wai a me ka hohonu ma nā kahawai hāmama me ka pololei ma lalo o ka milimita. I ka makahiki 2023, ua hoʻohana ka Los Angeles Bureau of Sanitation i ka ʻikepili ADV e hoʻomaikaʻi i ka hana o nā puka kaohi wai, e hōʻemi ana i ke kahe ʻana o ke alanui ma 22% ma nā kaiāulu pilikia kiʻekiʻe. Eia kekahi, kōkua nā mika i ka loiloi ʻana i nā ukana haumia i ka wai kahe, e alakaʻi ana i ka hoʻomaʻemaʻe alanui i kuhikuhi ʻia a me nā papahana ʻōnaehana ʻōmaʻomaʻo.
5. Ka pono o ka hale hana hydropower ma Brazil: Ma muli o ka WeirNā mika kahe
Ma ka ʻāina ʻo Amazon ma Brazil, hilinaʻi nā pā wai hydroelectric e like me Belo Monte i nā mika kahe kahawai hāmama e ana i ke kahe ʻana o ka wai komo a me ke kahe ʻana o ka wai. Hoʻohana ʻia nā ʻōmole Parshall i lako me nā transducers kaomi (e laʻa, ʻo Hach's FPI-2000) e helu i ka hoʻokuʻu ʻana me ka pololei ±3%, e hōʻoia ana i ka hana turbine maikaʻi loa a me nā hoʻokuʻu kahe kaiapuni. Ua hōʻike ʻia kahi noiʻi 2021 e Eletrobras, ka hui mana aupuni o Brazil, ua hōʻemi ke ana pololei ʻana o ke kahe ʻana i ka manawa downtime turbine ma 10%, e hoʻonui ana i ka hana ikehu makahiki ma 50 GWh—lawa ia e hoʻohana i ka mana no 25,000 mau home.
6. Noiʻi ʻEkolika Muliwai ma India: Laser Doppler Anemometry (LDA)
Ma ka Muliwai ʻo Ganges, hoʻohana nā kānaka noiʻi mai ka Indian Institute of Technology (IIT) Kanpur i ka laser Doppler anemometry (LDA) e aʻo i nā ʻano kahe haunaele a me ka lawe ʻana o ka sediment ma nā kahawai hāmama. Kōkua nā ana ʻaʻole komohewa o LDA i ke kumu hoʻohālike pehea e hoʻopuehu ai nā mea haumia a me nā meaʻai, e hoʻomaopopo ana i nā hana mālama no nā ʻano i hoʻopau ʻia e like me ka Ganges river dolphin. Ma kahi papahana 2022, ua hōʻike ka ʻikepili LDA ua hoʻololi ka hana ʻeli one i nā wikiwiki o ke kahe ʻana ma nā wahi hānau koʻikoʻi, e koi ana i nā kāhea no nā lula ʻeli koʻikoʻi.
Hopena
Mai nā deltas i maʻa i ke kahe a hiki i nā ʻāina mahiʻai maloʻo, ua hōʻoia ʻia nā mika kahe kahawai hāmama he mea nui noka mālama ʻana i nā kumuwaiwai wai, e hōʻoiaʻiʻo ana i ka mālama ʻana i ke kaiapuni, a me ke kākoʻo ʻana i ka pono o ka ʻoihana. Hōʻike kēia mau haʻawina hihia honua i ko lākou hiki ke hoʻololi: ka radar Doppler no ka pane wikiwiki ʻana i ke kahe wai, nā mea ʻike ultrasonic no ka mahiʻai kakaʻikahi ka wai, a me nā mika electromagnetic no ke kuleana ʻoihana. I ka hoʻoikaika ʻana o ka loli o ke aniau i nā pilikia hoʻokele wai, e lilo ka pololei a me ka hilinaʻi o nā mika kahe kahawai hāmama i mea nui i ka mālama ʻana i nā ʻōnaehana ola a me nā kaiāulu kanaka ma ka honua holoʻokoʻa.
Ka manawa hoʻouna: ʻApelila-25-2025