He Painga Mātātoko o te Pīpoi PVC-O i ngā Whakamātau Rahi

Te whai hiko: Pēhea ngā whakamāngungu PVC-O e whakamāngungu ana i ngā hiko o te pūpū

Te whakamāngungu o te mata wāhi o te wāhi wāhi, me te uara C o Hazen-Williams (≥150)

Ko te whai hiko kaha o ngā whakamāngungu PVC-O he hua mai i tōna mata wāhi kaha, kia kaha ai te whakamāngungu i ngā whakamāngungu o te whakamāngungu—i whakamārama ai kia iti ake ngā whakamāngungu o te whakamāngungu. I tēnei wā, ko te uara C o Hazen-Williams he ≥150, ā, kua whakamāngungu ake i ngā rākau mātā (C ≈ 100–130), ā, kua whakamāngungu ake i ngā whakamāngungu HDPE (C ≈ 140). Ko tēnei uara C te whakamāngungu i ngā whakamāngungu o te whakamāngungu i te roa, ā, ka taea te whakamāhi i ngā pūpū iti ake, i ngā hāere iti ake hoki mō te rōrahi rite—ka whakamāngungu i ngā hiko o te whakamāhi. Ko ngā whakamātautau i tāngia mai i te Pūrongo Whakahaere Rāhui ka taea te whakamahi i te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūngao o te pūnga Ko te mea nui, ko te tukanga arotautanga e kore anake e whakanui ake i te kaha engari he matū hoki, he mata kore-piripiri, he tino ātete ki te whakairo me te koiora. Kāore i rite ki te whakarewa, ki ētahi kirihou wera rānei, ka mau tonu te C ≥ 150 o te PVC-O mō ngā tekau taukāore he whakaoho haere, kāhore he whiu pūngao huna.

Ko te Whakaiti i te Ngaro o te Ngaro Whakatau i te Maitai me te HDPE i roto i te DN 630, 10 km Systems

I tēnei rāhui wai 10 km o te DN 630 e rere ana i te 1.5 m/s, he whakamāhua ngā whai hua o te PVC-O i wāhi kē i tōna uara C anō. Ko tēnei āhuatanga o te pūpahi iti ake, o te kaha ake, he whakapakari i te rōroa o waho i tēnei rāhui wai i te rāhui wai iron ductile, i te rāhui wai HDPE i te pānga o te whānuitanga o te pātata—ka whakapakari i te rōrahi o te wāhi, ka whakamāmā ake anō i ngā ngāwari o te rere. I mua tonu i te whakamārama i tēnei whakamāhua o te rōrahi, ko te PVC-O (C ≥ 150) e whakamāhua ana i te ngāwari o te pā o te 22% iti ake i te iron ductile (C = 100), me te 13% iti ake i te HDPE (C = 140). Ina whakamātua mai ngā whakamāhua o te rōrahi o te pūpahi, ka hinga te ngāwari o te pā o te pūnaha katoa i te 30% i te nuinga. Mō tēnei rāhui wai matua o te rōpū wai, ko tēnei he rere o ngā kilowatt i te kaha o te pump—ka whakamāmā ake i ngā utu o te whakamāhi, i ngā whānuitanga o te Scope 2. Ko ngā whakamātautau i te wāhi e whakamāhua ana i tēnei whakamāhua, he 25–35% te whakamāmā i te kaha o te pump i ia tau, e whakamana ana i te rōle o te PVC-O i ngā pūnaha o te whakamāhi kaha.

Ngā whakamāmā i te kaha o te whakamāhi i ngā rāhui wai o ngā takiwā

Whakamātautau i te ao pūnaha: Te whakamāmā i te hiko o te pūpū 32% i te rōhanga ABC o São Paulo

Ko te whakamāhinga i ngā wāhi katoa o ngā rākau wai ā-tāone e tātari ana i te 80% o ngā whakamāhinga i ngā hua hiko—ā, koinei te nui ake o ngā utu o te whakamāhinga e whakamāmā ai. I te rohe ABC o São Paulo, kua whakamāhinga mai i tēnei rākau wai 10 km DN 630 (ductile iron) ki te rākau wai PVC-O. I ngā tau e 12 o te whakamāhinga i rātia mai i te SCADA, kua whakamātautaua te rākau wai kia mōhiotia te 32% iti ake o ngā whakamāhinga i ngā hua hiko—i whakamāngai mai i te pūmau o te whakamāhinga o PVC-O (C ≥ 150) me te kore o ngā whakamāhinga i roto. Ko ngā hua hiko i tēnei tau i tātari mai i ngā miriona o ngā kWh, ā, i whakamāngai mai i te whakamāhinga o ngā utu i tēnei wā, ā, i whakamāngai mai hoki i ngā rākau wai e rere ana i te whakamāhinga o te rākau wai me ngā mahi whakamāhinga. I tēnei rākau wai nui o te rohe, i whakamāngai mai i te PVC-O hei rākau wai e whakamāhinga ai i ngā utu—ā, kāore he hāngā i ngā rārangi whakamāhinga, ngā rārangi o ngā rākau wai, me ngā tikanga whakamāhinga. Ko ngā whakamātautau nei i whakamāngai mai i te whakamāhinga o te rākau wai i tēnei rākau wai katoa, ā, i whakamāngai mai hoki i te whakamāhinga o te PVC-O i ngā wāhi katoa me tana pūmau.

Te whakamātau i te hua o te hiko i te wā o te ora: Ko te hiko i te hanganga e whakamātautia ana e ngā pūnaha whakamāhi i te wā o te whakamāhi i roto i ngā tau 3–5

Ko ngā whakaaro mō te hiko o te PVC-O i te hanganga he iti ake i ōna hua i te wā roa. I tēnei āki, i tēnei whakamātau i te wā o te ora (2022), kua kitea ko te hiko i te hanganga o te PVC-O e whakamātautia ana e ngā pūnaha whakamāhi i te wā o te whakamāhi i roto i ngā tau 3–5—hei wā iti i tōna wā o te whakamāhi i ngā tau 50. Ko tēnei whakamātau pūmau mai i ngā tau 3–5 i te āhua o ngā whakamāhua e rua: tuatahi, ko te whakamāhua i tēnei wā o te hiko i te rere o te wai (C ≥ 150); tuarua, ko te whakamāhua o te PVC-O i te rere o te wai, i te riri, i te whakamāhua o te rere o te wai. I ngā tau maha, he iti ake te rere o ngā pīpī metāliki—ka hiahiatia ngā pūnaha hiko kia whakamāhia kia whakamāhia ai te rere. Ko te PVC-O kāore he rere i tēnei. Nō reira, he nui ake ngā whakamāhua o te hiko i ngā whakamāhua tuatahi i te hanganga, ā, he whakamāhua hiko tēnei, ā, e whakamātua ana i ngā whāinga o te ISO 50001 me ngā whāinga o ngā rūnanga.

Kāore he rere o te wai, ā, he tāwhai tonu o te rere o te wai i ngā tau 30+

Ko te tāwhai, kāore he mātātoko, o te PVC-O i whakamāngai ai i te whakamāmā o te pārāwaha me ngā pārāwaha iti—ngā take tuatahi o te pakaru o ngā rākau pāpā me ngā rākau hāere i te wā roa. I rite ki ānei ngā rākau, ko te PVC-O tonu te kaha o te mātātoko o roto me te āhua o te rere i te wā 30 tau, i tēnei ake. I tēnei tau 30 o te whakamārama o tēnei rākau i tēnei rākau o te rākau o te tāone, i whakamāramatia ai te tāwhai o te pressure me te rere o te PVC-O, i te wā anō i whakamāramatia ai te whakamāmā o te hāere o ngā rākau pāpā i te whakamāmā o te pressure i te whakamāmā o te hāere (AWWA, 2022). Ko tēnei tāwhai he whāinga mātauranga me ngā whāinga ōhanga: ka taea e ngā rākau te whakamārama o ngā whare hāere i te wā o te whakamārama—ka whakamāngai ai i te whakamāmā o te whakamārama, me te whakamāngai ai i ngā utu hāere mai i te whakamāmā o ngā kaiwhakamā, te whakamāmā o ngā rākau, me ngā whakamāmā o te whakamāmā o ngā rākau. Mō ngā rākau nui, i reira ko te 1% o te rere i te whakamāmā o te rere i te whakamāmā o te rere i te wā roa, ko te PVC-O te whāinga o te whakamāmā o te rere.

Te whakamārama o te whakamātautau i te pānga o te hiko o te rākau PVC-O ki ngā whakamātautau mātua

Te whakamārama o te whakamātautau i te pānga o te hiko i te 1.5 m/s: PVC-O tāpiri i te rākau kōhao, HDPE, me te GRP

Ka taea te whakatau i te kaha o te wai: i te tere mahi tohu o te 1.5 m/s i roto i te putorino DN 630, ka rite te PVC-O (C ≥ 150) ki te kirihou whakapakari karaihe (GRP) i roto i te mahi mate upokoe rua i te 2.3 m/kmi te nui atu Ko te 13% te nui ake o te mate o te HDPE ki te PVC-O ka āhua iti, engari i runga i te 10 km o te arataki, ka nui ake te pūngao o te mano o te kWh ia tau. Ko te ngaronga o te rino ngenge he nui ake i te rua, e whakaatu ana i tōna āwangawanga ki te mate pukupuku me te koroheketanga. Ko te mea nui, ka mau tonu te PVC-O i tenei painga me te kore e pakaru, i te mea ko te rino pakari me te HDPE e kite ana i nga uara C e heke ana i te wa e heke ana na te waikura, te waikura ranei o te mata. Na tenei ka kore ai e waiho te PVC-O hei kōwhiringa tino whai hua i te tāutanga engari ko te mea anake e kī ana ka mau tonu te tino kaha i roto i tōna oranga katoa.

FAQ

He aha te uara C o Hazen-Williams?

Ko te uara C o Hazen-Williams he whakamārama i te pākaro o te mata wāhi o te rorohiko, ā, he whāinga ki tōna whai hua i ngā mahi wai. Ko ngā uara C teitei he tohu mō ngā mata māmā, ā, he iti ake te whakawātea o te whakawātea.

Me pēhea ngā rorohiko PVC-O e whakamāmā i te hiko kawe?

Ko ngā rorohiko PVC-O he mata wāhi māmā rawa, ā, ko tōna uara C o Hazen-Williams he ≥150, ā, he iti ake te ngāwari o te wai, ā, he iti ake te hiko e hiahiatia ana hei kawe.

He aha ngā whai hua roa o PVC-O i tēnei, i tērā i ngā rorohiko kōhao mātā, me ngā rorohiko HDPE?

I rere kē i ngā rorohiko kōhao mātā, me ngā rorohiko HDPE, ko ngā rorohiko PVC-O e mau tonu ana i tō rātou whai hua wai i ngā tau maha, nā te kaha o tō rātou matū, te whakamāmā i te whakamāmā, me te kore o te whakamāmā.

Me pēhea ngā rorohiko PVC-O e whakamārama ana i te whai hua o te ao?

Mā te whakamāmā i te hiko kawe, me te whakakore i te whakamāmā o te wai, ko ngā rorohiko PVC-O e whakamārama ana i ngā whakamāmā hiko e tāwhai ana, ā, e whakamāmā ana i tōna hiko whakamārama i roto i ngā tau e toru ki te rima, ā, e whakamārama ana i ngā whāinga o te whai hua o te ao.

He aha ngā take e whakamārama ana i te whai hua o PVC-O i tēnei i tērā i ēnei āhua?

Ko te PVC-O e whakauru ana i te whakamārama o te tuara o waho (C ≥150) me ngā rōhutu whānui ake, ā, he maha ngā whakamāngunganga i te pātata o te hau me ngā hāngā hau.