Kutenderera kwemvura (flocculation) inzira iyo zvinhu zvakasungirirwa zvisina chaji zvakanaka zviri mumvura zvinodzikamiswa. Izvi zvinoitwa nekuwedzera coagulant ine chaji yakanaka. Chaji yakanaka iri mumvura inodzikamisa chaji yakaipa iri mumvura (kureva kuti inodzikamisa). Kana zvinhu zvangodzikamiswa kana kuti zvadzikamiswa, maitiro ekutenderera anoitika. Zvinhu zvakadzikamiswa zvinobatana kuita zvinhu zvikuru kusvika zvarema zvakakwana kuti zvigadzikane ne sedimentation kana kuti zvakakura zvakakwana kuti zvibate mabubbles emhepo uye zviyangarara.
Nhasi tichanyatsoongorora hunhu hwe flocculant mbiri dzinoshandiswa pakugadzira zvinhu: poly aluminium chloride uye aluminium sulfate.
Aruminiyamu Sulfate: Aluminium Sulfate ine acidic. Nheyo yekushanda kwealuminium sulfate ndeiyi inotevera: aluminum sulfate inoburitsa aluminum hydroxide, Al(0H)3. Aluminum hydroxides dzine pH shoma, pamusoro padzo hadzizogadzikane nekukurumidza pa pH yakakwira (kureva pH iri pamusoro pe8.5), saka pH inoshanda inofanira kudzorwa nokungwarira kuti igare iri pakati pe5.8-8.5. Alkalinity mumvura inofanira kukwana panguva yekudonha kuitira kuti hydroxide isinganyunguduke yaumbwa zvizere uye itsvedzerere. Inobvisa zvinhu zvine ruvara necolloidal kuburikidza nekusanganiswa kwe adsorption uye hydrolysis on/in metal hydroxides. Saka, hwindo rekushanda realuminum sulfate repH rinoshanda riri pakati pe5.8-8.5, saka zvakakosha kuve nechokwadi chekuti pH inodzorwa zvakanaka mukati menguva yese yekushandisa aluminum sulfate.
Polyaluminum chloride(PAC) ndeimwe yemakemikari ekurapa mvura anonyanya kushanda mazuva ano. Inoshandiswa zvakanyanya mumvura yekunwa uye mukurapa mvura yakasviba nekuda kwekushanda kwayo kwakanyanya uye huwandu hwakakura hwepH nekupisa zvichienzaniswa nemamwe makemikari ekurapa mvura. PAC inowanikwa mumhando dzakasiyana-siyana ine huwandu hwealumina hunotangira pa28% kusvika 30%. Kuwanda kwealumina hakusi iko kwega kufungwa nezvako pakusarudza kuti ndeipi giredhi rePAC rekushandisa.
PAC inogona kuonekwa sechinosanganisa mvura isati yasvika pakunaya kwemvura. Maboka ealuminium asati asvika pakunaya kwemvura ane huwandu hwakanyanya hwekuchaja, izvo zvinoita kuti PAC ive cationic kupfuura alum. Izvi zvinoita kuti ive chinhu chakasimba chinodzivisa tsvina inenge yakamira mumvura.
PAC ine zvakanakira zvinotevera pamusoro pealuminium sulfate
1. Inoshanda pahuwandu hwakaderera zvikuru. Kazhinji, dose yePAC inenge chikamu chimwe muzvitatu chedose inodiwa kune alum.
2. Inosiya aruminiyamu shoma mumvura yakarapwa
3. Inogadzira tsvina shoma
4. Inoshanda pamusoro pehuwandu hwakakura hwe pH
Kune mhando dzakawanda dzemishonga inoyerera mvura, uye chinyorwa chino chinongotaura mbiri dzacho chete. Pakusarudza mushonga unovhara mvura, unofanira kufunga nezvemhando yemvura yauri kurapa uye bhajeti yako. Ndinovimba une ruzivo rwakanaka rwekurapa mvura. Semutengesi wemakemikari ekurapa mvura ane ruzivo rwemakore makumi maviri nemasere. Ndinofara kugadzirisa matambudziko ako ese (nezvemakemikari ekurapa mvura).
Nguva yekutumira: Chikunguru-23-2024