Kuwanikwa kwepakati pemvura yekunwa munzvimbo dzeveruzhinji (zvikoro. zvipatara, zviteshi, maresitorendi, zvitoro, migwagwa mikuru, nezvimwewo) chiratidzo chekufambira mberi munharaunda uye inobatsira kuvandudza kunaka kwevatengi.Kunyanya mumamiriro ezvinhu eCOVlD-19, zvinhu zvisina kukwana zvakawedzera kukosha kwezvivakwa.Dongguan kinda vane makore anopfuura gumi nemasere echiitiko mukusimudzira indasitiri, Kinda inopa yakagadzikana uye inoshanda magadzirirwo emvura ekugadzirisa uye anoramba achigadzira.
Bazi rezvedzidzo rePublic Republic of China rakapa chiyero cheindasitiri chezvinodiwa zvehunyanzvi uye zvirevo zvemichina yekurapa membrane yemidziyo yemvura yekunwa muzvikoro zvepuraimari nesekondari (JY / T 0593-2019), 5.2.1 uye Appendix A yakataura kuti: ( midziyo yekuchenesa mvura yepuraimari neyesekondari) inofanira kutora ultrafiltration uye nanofiltration (chete munzvimbo dzine njodzi huru yekusvibiswa kwemvura yakasvibira, reverse osmosis inogona kushandiswa. Kana mvura yakasvibirira inosangana neyakajairwa, nanofiltration kana ultrafiltration inogona kushandiswa kurapwa).