Ọkụ PE dabara adaba maka ngwa mmiri a na-aṅụ?

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Ndị ahịa anyị ejirila usoro pipeline polyethylene maka inye mmiri ọñụñụ kemgbe mmalite ha na 1950.Ụlọ ọrụ plastik ewerewo nnukwu ọrụ n'ịhụ na ngwaahịa ndị a na-eji eme ihe adịghị emetụta àgwà mmiri.

Nnwale dị iche iche a na-eme na ọkpọkọ PE na-ekpuchikarị uto, isi, ọdịdị mmiri, na ule maka uto nke obere ihe n'ime mmiri.Nke a bụ nnwale dị ukwuu karịa ka etinyere ya ugbu a na ngwa ọkpọkọ ọdịnala, dị ka ọla na simenti na ngwaahịa ciment, n'ọtụtụ mba Europe.Ya mere enwere obi ike ka ukwuu na a pụrụ iji ọkpọkọ PE mee ihe maka mmiri ọṅụṅụ n'okpuru ọtụtụ ọnọdụ ọrụ.

Enwere ụfọdụ mgbanwe na ụkpụrụ mba na ụzọ nnwale ejiri n'etiti mba ndị dị na Europe.Enyere nkwado maka itinye mmiri a na-aṅụ mmanya na mba niile.A na-amata nkwado ndị otu ndị a na mba Europe ndị ọzọ na mgbe ụfọdụ karịa n'ụwa niile:

Nyocha mmiri ọṅụṅụ UK (DWI)

Germany Deutsche Verein des Gas-und Wasserfaches (DVGW)

Ụgwọ nke ụlọ ọrụ Netherlands KIWA N.V

France CRECEP Center de Recherche, d'Expertise et de

Contrôle des Eaux de Paris

USA National Sanitary Foundation (NSF)

Ekwesịrị imepụta ogige ọkpọkọ PE100 maka ojiji na ngwa mmiri.Ọzọkwa PE100 ọkpọkọ nwere ike arụpụtara si ma-acha anụnụ anụnụ ma ọ bụ nwa compound na-acha anụnụ anụnụ n'ọnyá na-achọpụta na ọ dị mma maka ojiji na-aṅụ mmiri ngwa.

Enwere ike nweta ozi ndị ọzọ gbasara nkwenye maka iji mmiri ọṅụṅụ mee ihe site na onye na-emepụta ọkpọkọ ma ọ bụrụ na achọrọ ya.

Iji mee ka iwu kwekọọ na iji hụ na a na-edozi ihe niile eji eme ihe na mmiri ọṅụṅụ n'otu ụzọ ahụ, a na-emepụta EAS European Approval Scheme, dabere na European Commission.

UK

Inspectorate mmiri ọṅụṅụ (DWI)

Germany

Deutsche Verein des Gas-und Wasserfaches (DVGW)

Netherlands

KIWA NV

France

CRECEP Center de Recherche, d'Expertise et de
Contrôle des Eaux de Paris

USA

National Sanitary Foundation (NSF)

Ntuziaka 98/83/EC.A na-ahụ maka nke a site n'aka otu ndị na-ahụ maka mmiri mmiri nke Europe, RG-CPDW - Ndị na-ahụ maka ngwaahịa na-ewu ụlọ na kọntaktị na mmiri ọṅụṅụ.A na-eche na EAS ga-amalite na 2006 n'ụdị dị oke, ma ọ dị ka ọ gaghị enwe ike ịme ya n'ụzọ zuru ezu ruo oge dị ukwuu mgbe e mesịrị mgbe usoro ule dị maka ihe niile.

Mba EU ọ bụla na-anwale ọkpọkọ rọba maka mmiri ọñụñụ.Òtù ndị na-eweta ngwaahịa ngwaahịa (Plastics Europe) akwadowo ogologo oge iji plastik kọntaktị nri maka ngwa mmiri ọṅụṅụ, n'ihi na iwu kọntaktị nri bụ ihe kachasị sie ike iji chebe ahụike ndị na-azụ ahịa ma jiri nyocha toxicological dị ka achọrọ na ntuziaka nke Kọmitii Sayensị nke European Commission. maka nri (otu n'ime kọmitii nke EU Food Standards Agency).Dịka ọmụmaatụ, Denmark na-eji iwu kọntaktị nri ma na-eji njirisi nchekwa agbakwunyere.Ụkpụrụ mmiri ọṅụṅụ Danish bụ otu n'ime ihe kacha sie ike na Europe.


Oge nzipu: Jun-03-2019