Residual chlorine yana nufin cewa bayan an sanya magungunan da ke ɗauke da chlorine a cikin ruwa, baya ga cinye wani yanki na adadin chlorine ta hanyar yin hulɗa da kwayoyin cuta, ƙwayoyin cuta, kwayoyin halitta, da kwayoyin halitta a cikin ruwa, ragowar ɓangaren adadin adadin. chlorine ana kiransa ragowar chlorine. Ana iya raba shi zuwa ragowar chlorine kyauta da kuma hada sauran chlorine. Jimillar waɗannan ragowar chlorine guda biyu ana kiranta jimlar ragowar chlorine, wanda za'a iya amfani da shi don nuna gabaɗayan tasirin gurɓataccen ruwa. Cibiyoyin da suka dace a wurare daban-daban na iya zaɓar gano ragowar chlorine ko jimlar ragowar chlorine bisa ga ma'auni masu dacewa da takamaiman yanayi na ruwa. Daga cikin su, ragowar chlorine na kyauta gabaɗaya shine chlorine kyauta a cikin nau'in Cl2, HOCl, OCl-, da sauransu; chlorine da aka haɗe shi ne chloramines NH2Cl, NHCl2, NCl3, da dai sauransu da aka kafa bayan halayen chlorine da ammonium kyauta. Ragowar chlorine da yawanci muke faɗi gabaɗaya yana nufin ragowar chlorine kyauta.
Ragowar chlorine/jimilar ragowar chlorine yana da buƙatu daban-daban don ruwan sha na gida, ruwan saman ƙasa, da najasar likita. Daga cikin su, "Ma'aunin Tsaftar Ruwa" (GB 5749-2006) yana buƙatar a sarrafa ragowar ƙimar chlorine na ruwan masana'anta na sashin samar da ruwa a 0.3-4.0mg/L, da ragowar abun ciki na chlorine a ƙarshen cibiyar sadarwar bututu kada ta kasance ƙasa da 0.05mg/L. Matsakaicin ragowar chlorine a cikin hanyoyin ruwan sha na ruwa mai tsaka-tsaki yakamata ya zama ƙasa da 0.03mg/L. Lokacin da adadin chlorine da ya rage ya fi 0.5mg/L, yakamata a kai rahoto ga sashen kula da muhalli. Dangane da batutuwa daban-daban na fitarwa da filayen fitarwa na najasar likita, buƙatun jimillar chlorine na saura a mashigar wurin tuntuɓar masu cutar sun bambanta.
Saboda ragowar chlorine da jimillar chlorine da suka rage ba su da kwanciyar hankali a cikin ruwa, nau'ikan da suke da su suna da sauƙin shafar abubuwa kamar zafin jiki da haske. Don haka, ana ba da shawarar gano ragowar chlorine da sauran chlorine gabaɗaya don a gano su cikin sauri a wurin yin samfur don tabbatar da daidaiton ganowa. Hanyoyin gano ƙwayar chlorine da jimlar chlorine sun haɗa da "HJ 586-2010 Ƙaddamar da chlorine kyauta da jimlar chlorine a cikin ingancin ruwa N, N-diethyl-1,4-phenylenediamine spectrophotometric Hanyar", hanyar electrochemical, reagent hanya, da dai sauransu. Fasahar Lianhua LH-CLO2M Mitar Chlorine mai ɗaukar nauyi an ƙera ta bisa tsarin DPD, kuma ana iya samun ƙimar cikin minti 1. Ana amfani dashi ko'ina a cikin ainihin lokacin sa ido na ragowar chlorine da jimillar ragowar chlorine saboda gano daidaitonsa da sauƙin aiki a wurin aiki.
Lokacin aikawa: Maris 14-2023
