Ndikhetha njani uhlobo lwePolyacrylamide?

Polyacrylamide(PAM) ngokuqhelekileyo inokuthi ihlelwe kwi-anionic, cationic, kunye ne-nonionic ngokohlobo lwe-ion. Isetyenziswa ikakhulu kwi-flocculation kunyango lwamanzi. Xa ukhetha, iintlobo ezahlukeneyo zamanzi amdaka zinokukhetha iintlobo ezahlukeneyo. Kufuneka ukhethe i-PAM efanelekileyo ngokweempawu zogutyulo lwakho. Kwangaxeshanye, kufuneka uphinde ucacise ukuba yeyiphi inkqubo i-polyacrylamide eya kongezwa kunye nenjongo ofuna ukuyifeza ngokuyisebenzisa.

Iimpawu zobuchwephesha bepolyacrylamide ngokubanzi ziquka ubunzima bemolekyuli, iqondo le-hydrolysis, ionicity, i-viscosity, umxholo we-monomer eseleyo, njl njl. Ezi zalathi kufuneka zicaciswe ngokuhambelana namanzi amdaka owaphathayo.

1. Ubunzima be-molecular / viscosity

I-Polyacrylamide ineentlobo ezahlukeneyo zobunzima beemolekyuli, ukusuka ezantsi ukuya phezulu kakhulu. Ubunzima bemolekyuli buchaphazela ukusebenza kweepolymers kwizicelo ezahlukeneyo. I-polyacrylamide ephezulu yobunzima bemolekyuli idla ngokusebenza ngakumbi kwinkqubo ye-flocculation kuba amatyathanga abo epolymer made kwaye anokudibanisa amasuntswana amaninzi kunye.

I-viscosity yesisombululo sePAM iphezulu kakhulu. Xa i-ionization izinzile, ubunzima obukhulu bemolekyuli ye-polyacrylamide, i-viscosity enkulu yesisombululo sayo. Oku kungenxa yokuba ikhonkco le-macromolecular le-polyacrylamide lide kwaye lincinci, kwaye ukuchasana nokunyakaza kwisisombululo kukhulu kakhulu.

2. Idigri ye-hydrolysis kunye ne-ionicity

I-ionicity ye-PAM inempembelelo enkulu kwimpembelelo yokusetyenziswa kwayo, kodwa ixabiso layo elifanelekileyo lixhomekeke kuhlobo kunye nohlobo lwezinto eziphathwayo, kwaye kukho amaxabiso ahlukeneyo kwiimeko ezahlukeneyo. Xa amandla e-ionic yezinto eziphathwayo ziphezulu (ngaphezulu kwezinto ezingabonakaliyo), i-ionicity ye-PAM esetyenzisiweyo kufuneka ibe phezulu, ngaphandle koko kufuneka ibe ngaphantsi. Ngokubanzi, iqondo leanion libizwa ngokuba liqondo le-hydrolysis, kwaye iqondo le-ion libizwa ngokuba liqondo le-cation.

Unokukhetha njani i-polyacrylamidekuxhomekeke kugxininiso lwecolloids kunye nezinto eziqinileyo ezimisiweyo emanzini. Emva kokuqonda ezi zikhombisi zingentla, indlela yokukhetha iPAM efanelekileyo?

1. Qonda umthombo welindle

Okokuqala, kufuneka siqonde umthombo, indalo, ukubunjwa, umxholo oqinileyo, njl njl.

Ngokubanzi, i-cationic polyacrylamide isetyenziselwa ukunyanga udaka lwe-organic, kwaye i-anionic polyacrylamide isetyenziselwa ukunyanga udaka lwe-inorganic. Xa i-pH iphezulu, i-cationic polyacrylamide akufanele isetyenziswe, kwaye xa i-anionic polyacrylamide kufuneka ingasetyenziswa. I-asidi eyomeleleyo yenza ukuba kungafanelekanga ukusebenzisa i-anionic polyacrylamide. Xa umxholo oqinileyo we-sludge uphezulu, umthamo we-polyacrylamide osetyenziswayo mkhulu.

2. Ukukhethwa kwe-ionity

Kuba udaka olufuna ukuphelelwa ngamanzi emzimbeni kunyango lwelindle, ungakhetha flocculants kunye ionicity ezahlukeneyo ngokusebenzisa imifuniselo encinane ukukhetha polyacrylamide ifanelekileyo, nto leyo enokufezekisa isiphumo ilungileyo flocculation kunye nokunciphisa idosi, ukonga iindleko.

3. Ukukhethwa kobunzima bemolekyuli

Ngokuqhelekileyo, okukhona ubunzima bemolekyuli yeemveliso ze-polyacrylamide, kokukhona i-viscosity enkulu, kodwa xa isetyenziswa, iphezulu ubunzima bemolekyuli yemveliso, kokukhona isiphumo sokusetyenziswa singcono. Ekusetyenzisweni okuthe ngqo, ubunzima bemolekyuli obufanelekileyo bepolyacrylamide kufuneka bumiselwe ngokweshishini lokwenyani lesicelo, umgangatho wamanzi kunye nezixhobo zonyango.

Xa uthengela kwaye usebenzisa i-PAM okokuqala, kucetyiswa ukuba unikeze imeko ethile yogutyulo kumenzi we-flocculant, kwaye siya kuncoma uhlobo lwemveliso olufanelekileyo kuwe. Kwaye iisampulu zeposi zovavanyo. Ukuba unamava amaninzi kunyango lwakho lwelindle, ungasixelela iimfuno zakho ezithile, amasimi isicelo, kunye neenkqubo, okanye usinike ngokuthe ngqo iisampulu PAM oyisebenzisayo ngoku, kwaye siya kukutshatisa kunye polyacrylamide ekunene.