Me za a iya amfani da shi don maye gurbin polyaluminum chloride a cikin maganin najasa?

A cikin maganin najasa, Polyaluminum Chloride (PAC) ana amfani da shi akai-akai, amma ana iya la'akari da waɗannan zaɓuɓɓukan a cikin takamaiman yanayi (kamar rage ragowar aluminum, daidaitawa da ƙarancin ingancin ruwa ko inganta farashi):

Ⅰ. MADADIN MASU CUTARWA

Polyferric sulfate (Pfs)

● Fa'idodi: Ƙarfin daidaitawa ga yanayin zafi mai ƙarancin zafi (har yanzu yana aiki a 4℃), saurin narkewar ƙasa cikin sauri, babu haɗarin ragowar ion na aluminum, wanda ya dace da maganin ruwan sha;

● Yanayi masu dacewa: yawan dattin ruwa, ruwan sharar mai da wuraren da ke buƙatar kulawa mai tsauri na aluminum (kamar ayyukan ruwa);

●Kudinsa: Kashi 30-50% ƙasa da PAC a yawan amfani, kuma ingantaccen aikin cire ruwa daga laka.

Polychloride na ƙarfe na aluminum (PAFC)

● Siffofi: tare da fa'idodin gishirin aluminum da gishirin ƙarfe, furen alum ya fi ƙanƙanta, saurin narkewar ƙasa yana da sauri, ya dace da yawan datti/ruwan sharar gida mai ƙarancin zafi;

● Tsarin amfani: ruwan sharar gida na masana'antu (misali, bugawa da rini, yin takarda), ƙarancin zafin jiki da kuma tushen ruwa mai ƙarancin turbidity.

Magungunan gargajiya marasa kwayoyin halitta

● Aluminum sulfate: ƙarancin farashi, amma tasirin flocculation ya fi PAC rauni, ya kamata a yi amfani da shi tare da taimakon coagulant;

● Lemun tsami (CaO): ana amfani da shi don daidaita pH da cire phosphorus, amma yawan samar da laka yana da yawa, don haka yana buƙatar a haɗa shi da wasu sinadarai.

II. Madadin Halitta da Haɗaɗɗen Abinci

Polyacrylamide (PAM)

● Aiki: Sau da yawa ana amfani da shi azaman taimakon coagulant tare da PAC. Idan aka yi amfani da shi shi kaɗai, ya kamata a zaɓi shi gwargwadon ingancin ruwa (cationic/PAM don cire ruwa daga laka);

● Iyakoki: Ba zai iya maye gurbin aikin coagulation na PAC gaba ɗaya ba, kuma yana buƙatar amfani da shi tare da abubuwan da ba su da sinadarai.

Haɗin flocculant

● PFS+PAM/gyaran PAM: inganta ingancin maganin sharar gida mai ɗauke da mai da kuma rage jimillar sinadarai;

● Chitosan/gelatin na halitta mai tushen flocculant: ya dace da sarrafa ruwan sharar gida na abinci, aminci mai yawa amma tsada mai yawa.

Sabuwar fasahar mallakar haƙƙin mallaka

● Cika sinadarin magnetic composite + rage PAC: ƙarfin sha da kuma ɗaukar hoto yana ƙaruwa ta hanyar loda ƙarfe oxide, kuma adadin PAC yana raguwa da fiye da kashi 30%.

Ⅲ. Madadin ayyuka na musamman

Ma'aikatan Derophilic

● Gishirin lemun tsami ko calcium: hanyar hazo ta sinadarai don cire phosphorus, amma yana iya ƙara taurin ruwa;

● Gishirin ƙarfe (misali, PFS): cire phosphorus da ƙarfe masu nauyi a lokaci guda, ya fi gishirin aluminum kyau.

Rage launin fata da lalacewar COD

● Mai cire launi na musamman + ferrous sulfate: don rini ruwan sharar gida, maye gurbin aikin cire launi na PAC.

Ⅳ. Shawarwari don zaɓuɓɓukan madadin

abubuwa suna buƙatar kulawa:

● Kafin a maye gurbinsa, ya kamata a tantance mafi kyawun adadin da kewayon pH ta hanyar gwajin gwaji (misali, PFS ya dace da pH 4-11, PAC shine 5-8);

● Ya kamata a tantance ragowar sinadaran da aka yi amfani da su a aluminum (kamar PAC da PAFC), musamman a wuraren da ruwa ke da illa ga muhalli;

● Maganin haɗin gwiwa na iya ƙara yawan laka, don haka ya kamata a inganta tsarin bushewa.