Kodi chitoliro cha PE ndi choyenera kugwiritsa ntchito madzi amchere?

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Makina a mapaipi a polyethylene akhala akugwiritsidwa ntchito ndi makasitomala athu popereka madzi akumwa kuyambira pomwe adakhazikitsidwa m'ma 1950.Makampani apulasitiki atenga udindo waukulu wowonetsetsa kuti zinthu zomwe zimagwiritsidwa ntchito sizikusokoneza madzi.

Mayesero osiyanasiyana omwe amachitidwa pa mapaipi a PE nthawi zambiri amakhudza kukoma, fungo, maonekedwe a madzi, ndi kuyesa kukula kwa tizilombo tating'onoting'ono ta m'madzi.Awa ndi mayeso ochulukirapo kuposa momwe amagwiritsidwira ntchito pazida zamapaipi akale, monga zitsulo ndi simenti ndi zopangira simenti, m'maiko ambiri aku Europe.Chifukwa chake pali chidaliro chokulirapo kuti chitoliro cha PE chingagwiritsidwe ntchito popereka madzi amchere pansi pazikhalidwe zambiri zogwirira ntchito.

Pali kusiyana kwina pamalamulo adziko ndi njira zoyesera zomwe zimagwiritsidwa ntchito pakati pa mayiko aku Europe.Chivomerezo cha kugwiritsa ntchito madzi akumwa chaperekedwa m'mayiko onse.Mabungwe otsatirawa amavomereza kumayiko ena aku Europe ndipo nthawi zina padziko lonse lapansi:

UK Drinking Water Inspectorate (DWI)

Germany Deutsche Verein des Gas-und Wasserfaches (DVGW)

Malingaliro a kampani Netherlands KIWA N.V

France CRECEP Center de Recherche, d'Expertise et de

Contrôle des Eaux de Paris

USA National Sanitary Foundation (NSF)

Mapaipi a PE100 amayenera kupangidwa kuti agwiritsidwe ntchito m'madzi amchere.Komanso chitoliro cha PE100 chikhoza kupangidwa kuchokera kumitundu yabuluu kapena yakuda yokhala ndi mikwingwirima yabuluu yodziwika kuti ndiyoyenera kugwiritsidwa ntchito m'madzi amchere.

Zambiri zokhudzana ndi chilolezo chogwiritsa ntchito madzi amchere zitha kupezeka kwa wopanga mapaipi ngati zingafunike.

Pofuna kugwirizanitsa malamulowo ndikuwonetsetsa kuti zinthu zonse zomwe zimagwiritsidwa ntchito pokhudzana ndi madzi akumwa zikugwiritsidwa ntchito mofananamo, EAS European Approval Scheme ikupangidwa, kutengera European Commission.

UK

Drinking Water Inspectorate (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)

Directive 98/83/EC.Izi zikuyang'aniridwa ndi gulu la European Water Regulators, RG-CPDW - Regulators Group for Construction Products polumikizana ndi Madzi Akumwa.Cholinga chake chinali chakuti EAS iyambe kugwira ntchito mu 2006 m'njira zochepa, koma zikuwoneka kuti sizingatheke kuti ikwaniritsidwe mpaka tsiku linalake pomwe njira zoyesera zidalipo pazida zonse.

Mapaipi apulasitiki amadzi akumwa amayesedwa mwamphamvu ndi State Member aliyense wa EU.Bungwe la raw materials suppliers' Association (Plastiki Europe) lakhala likulimbikitsa kugwiritsa ntchito mapulasitiki okhudzana ndi chakudya pofunsira madzi akumwa, chifukwa malamulo okhudzana ndi zakudya ndi okhwima kwambiri kuteteza thanzi la ogula komanso kugwiritsa ntchito kuwunika kwa poizoni monga momwe amafunikira mu malangizo a European Commission's Scientific Committee. ya Chakudya (imodzi mwa makomiti a EU Food Standards Agency).Denmark, mwachitsanzo, imagwiritsa ntchito malamulo okhudzana ndi chakudya ndipo imagwiritsa ntchito njira zina zotetezera.Mulingo wamadzi akumwa aku Danish ndi amodzi mwazovuta kwambiri ku Europe.


Nthawi yotumiza: Jun-03-2019