Kwinkqubo yokucocwa kwamanzi amdaka, kufuneka ihambe ngokulandelelana kwamanyathelo okusebenza, kwaye emva kokuvavanywa ukuhlangabezana nomgangatho wokukhutshwa, ikhutshwe. Kolu luhlu lweenkqubo, i-flocculant idlala indima ebalulekileyo. II-Flocculantinokujikeleza into emisiweyo yeemolekyuli ezincinci emanzini. Ukumisa, ukwenza kube lula ukuhluza. Iintlobo zeeflocculants nazo zizityebi kakhulu. Indlela yokukhetha i-flocculant ehambelana nawe nayo ibalulekile kwaye ibalulekile. Ngokumalunga nokukhethwa kweeflocculants, abavelisi bePAM kunye nePAC banala macebiso alandelayo:
Indlela yokukhetha i-flocculant kunyango lwamanzi amdaka kufuneka ikhethwe ngokweempawu zamanzi amdaka kwishishini elithile. Ngexesha elifanayo, kuxhomekeke apho i-flocculant yongezwa kwaye isetyenziselwa ntoni. Ngokuqhelekileyo, xa ukhetha i-flocculant ye-inorganic, ukubunjwa kwamanzi amdaka kufuneka kuthathelwe ingqalelo, kwaye emva koko ukhethe ofanelekileyo (ityuwa yentsimbi, ityuwa ye-aluminium okanye ityuwa ye-iron-aluminium, ityuwa ye-silicon-aluminium, ityuwa ye-silicon-ferric, njl.); i-inorganic polymer flocculants iquka:polyaluminium chloride (PAC), polyaluminium sulfate (I-PAS), polyaluminium sulfochloride (I-PACS) kunyei-polyferric sulfate (PFS), njl. Phakathi kwabo, i-PAC emele ngakumbi kunye ne-PAS ineempawu zokuziqhelanisa kakuhle nokutshintsha komgangatho wamanzi aphathwe ngamachiza okucoca amanzi akrwada, i-coagulation enhle kunye nemiphumo yokucoca, kunye neendleko eziphantsi zeekhemikhali.
Xa ukhetha i-organic flocculant (enje:polyacrylamide PAM), ikakhulu kuxhomekeke ekubeni i-anionic polyacrylamide, i-cationic polyacrylamide okanye i-nonionic polyacrylamide isetyenziswa. Anionic polyacrylamides zisekelwe kwinqanaba hydrolysis. Ukukhethwa kwee-cations ngokuqhelekileyo kusetyenziselwa ukukhupha amanzi ngodaka. Ukukhethwa kwe-cationic polyacrylamide kubaluleke kakhulu. Izityalo zokucoca ugutyulo lwasezidolophini ngokubanzi zisebenzisa i-cationic polyacrylamide ephakathi eyomeleleyo. Ii-cations ezibuthathaka zisetyenziselwa ukukhutshwa kwe-sludge ekwenzeni iphepha kunye nokuprinta kunye nezityalo zokudaya, kwaye amanzi amdaka amayeza asetyenziswa ngokubanzi. Khetha iications ezinamandla njalo njalo. Uhlobo ngalunye lwamanzi amdaka luneempawu zalo. I-polyacrylamide engeyiyo i-ionic isetyenziswa ikakhulu phantsi kweemeko ezibuthathaka ze-asidi, kwaye i-PAM engeyiyo i-ionic isetyenziswa kakhulu kwiifektri zokushicilela kunye nokudaya.
Ababoneleli ngearhente yonyango lwamanzicebisa ukuba ukukhethwa kwazo zonke ezi flocculants kufuneka kumiselwe ngokovavanyo. Kuvavanyo, misela uqikelelo lwexabiso ledosi, jonga isantya se-flocculation kunye nentlenga, ubale iindleko zonyango, kwaye ukhethe iarhente eyongayo nesebenzayo ye-flocculation.
Ixesha lokuposa: Dec-19-2022