Unikezelo lwamanzi okusela olusembindini kwiindawo zikawonke-wonke (izikolo. izibhedlele, izitishi, iindawo zokutyela, iivenkile ezinkulu, oohola bendlela, njl.njl.) luphawu lwenkqubela phambili yentlalo kwaye lunceda ekuphuculeni inkoliseko yabathengi.Ngokukodwa kumxholo we-COVlD-19, unikezelo olungonelanga lwandise ukubaluleka kweziseko zophuhliso.I-Dongguan kinda ineminyaka engaphezulu kwe-18 yamava kuphuhliso loshishino, i-Kinda ibonelela ngezisombululo ezizinzileyo nezisebenzayo zokucoca amanzi kwaye idala ngokuqhubekayo.
UMphathiswa wezemfundo weRiphabhlikhi yabantu baseTshayina ukhuphe umgangatho wemizi-mveliso weemfuno zobugcisa kunye nezixhobo ezichanekileyo zokucoca inwebu izixhobo zamanzi okusela kwizikolo zaseprayimari nezizisekondari (JY / T 0593-2019), 5.2.1 kunye neSihlomelo A sikhankanye ukuba: ( izixhobo zokunyanga amanzi esikolweni esiziiprayimari kunye nesekondari) kufuneka zamkele i-ultrafiltration kunye ne-nanofiltration (kuphela kwiindawo ezinomngcipheko ophezulu wokungcoliswa kwamanzi akrwada, i-osmosis ye-reverse ingasetyenziswa. Xa umgangatho wamanzi ococekileyo udibana nomgangatho, i-nanofiltration okanye i-ultrafiltration ingasetyenziselwa unyango).