Flocculation - Aluminium sulphate vs Poly aruminiyamu chloride

Flocculation ndiyo nzira iyo inokonzeresa zvakashata zvakamiswa zvimedu zviripo mune yakagadzikana kuturika mumvura zvinodzikisirwa. Izvi zvinowanikwa nekuwedzera coagulant ine positive charged. Kuchajisa kwakanaka mucoagulant kunoita kuti mutero usina kunaka uripo mumvura (kureva kuti unoikanganisa). Kana zvimedu zvikasagadzikana kana kusagadziriswa, iyo flocculation process inoitika. Zvimedu zvisina kugadzikana zvinosangana kuita zvidimbu zvihombe uye zvakakura kusvika zvarema zvekugadzika nesedimentation kana kuti zvakakura zvekuteya mabhuru emhepo nekuyangarara.

Nhasi tichatarisisa nezve flocculation zvivakwa zviviri zvakajairika flocculants: poly aluminium chloride uye aluminium sulfate.

Aluminium sulfate: Aluminium Sulfate ine acidic mune zvakasikwa. Nheyo yekushanda yealuminium sulfate ndeyotevera: aluminium sulfate inobudisa aluminium hydroxide, Al (0H) 3. Aruminiyamu hydroxides ane shoma pH siyana, pamusoro izvo havazoiti zvinobudirira hydrolysis kana , hydrolyzated aruminiyamu hydroxides vakagadzika nokukurumidza panguva yakakwirira pH (kureva pH pamusoro 8.5), saka kushanda pH inofanira kudzorwa nokungwarira kuchengeta iri pakati 5.8-8.5. . iyo alkalinity mumvura inofanira kunge yakakwana panguva ye flocculation process kuti ive nechokwadi chekuti insoluble hydroxide inoumbwa zvakakwana uye inonaya. Inobvisa ruvara uye colloidal zvinhu kuburikidza nemusanganiswa weadsorption uye hydrolysis pa/mumetal hydroxides. Naizvozvo, iyo inoshanda pH hwindo yealuminium sulfate yakanyatso 5.8-8.5, saka zvakakosha kuti uve nechokwadi chekutonga kwakanaka kwepH mukati mekuita kana uchishandisa aluminium sulfate.

Polyaluminium chloride(PAC) ndeimwe yeanonyanya kushanda ekurapa mvura makemikari ari kushandiswa nhasi. Inoshandiswa zvakanyanya mukunwa mvura uye kurapwa kwemvura yetsvina nekuda kweiyo yakakwirira coagulation kushanda zvakanaka uye yakakura kwazvo yepH uye tembiricha yekushandisa zvichienzaniswa nemamwe makemikari ekuchenesa mvura. PAC inowanikwa mumagiredhi akati wandei ane alumina concentrations kubva pa28% kusvika 30%. Alumina concentration haisiriyo yega yekutarisisa pakusarudza kuti giredhi ripi rePAC yekushandisa.

PAC inogona kutariswa se pre-hydrolysis coagulant. The pre-hydrolysis aruminiyamu masumbu ane yakakwirira chaizvo chaji chaji density, izvo zvinoita PAC zvikuru cationic kupfuura alum.ichiita akasimba destabilizer nokuda zvakaipa chaji yakaturikwa tsvina mumvura.

PAC ine zvinotevera zvakanakira pamusoro pealuminium sulfate

1. Inoshanda panguva yakaderera zvikuru. Semutemo wezvigunwe, iyo PAC dosi inosvika chikamu chimwe muzvitatu chedoro inodiwa kune alum.

2. Inosiya aruminiyamu shoma yakasara mumvura yakagadziriswa

3. Inobudisa tsvina shoma

4. Inoshanda pamusoro pehupamhi hwepH

Kune akawanda marudzi e flocculants, uye chinyorwa ichi chinongosuma maviri acho. Paunosarudza coagulant, iwe unofanirwa kufunga nezvemhando yemvura yauri kurapa uye yako wega mutengo bhajeti. Ndinovimba une ruzivo rwakanaka rwekuchenesa mvura. Semutengesi wemakemikari ekurapa mvura ane makore makumi maviri nemasere ane ruzivo. Ndiri kufara kugadzirisa matambudziko ako ese (pamusoro pemakemikari ekurapa mvura).