Ukuchithwa kwe-sludge yinxalenye ebalulekileyo yenkqubo yokucocwa kwamanzi amdaka. Injongo yalo kukususa ngokufanelekileyo amanzi kwi-sludge, ukwenzela ukuba inani le-sludge lincinci, kwaye iindleko zokulahla kunye nendawo yomhlaba ziyancipha. Kule nkqubo, ukhetho lweI-Flocculantsisitshixo, kunye nePolyDADMAC, njengento esebenzayoI-Cationic Polymer flocculant, idlala indima ebaluleke ngakumbi.
Okokuqala, kufuneka siqonde ukubunjwa kunye neempawu ze-sludge. Udaka luyintlenga eyomeleleyo eveliswa ngexesha lokucocwa kogutyulo. Iqulethe izinto ezinzima ezifana ne-organic debris, amaqela e-microbial, amasuntswana angenayo kunye ne-colloids. Izinto eziqinileyo ezimisiweyo kwi-sludge zihlawuliswa kakubi kwaye zigxotha enye kwenye, ngelixa amanzi egcwalisa umbindi wezinto eziqinileyo ezimisiweyo, ngoko ke umthamo wokuqala wamanzi we-sludge ungafikelela kwi-95%. Ngoko ke, indlela yokuphumeza ngokufanelekileyo ukuchithwa kwe-sludge kuye kwaba ngumcimbi obalulekileyo kwintsimi yokucoca amanzi amdaka.
Kwinkqubo yokukhupha amanzi ngodaka,Iiflocculants zokukhupha amanzi ngodakangumba obalulekileyo onempembelelo. I-flocculant idibanisa amaqhekeza amancinci kwi-sludge ibe ngamaqhekeza amakhulu ngokusebenzisa i-electric neutralization, i-adsorption bridging, njl. Njengemveliso yeekhemikhali esetyenziswe ngokukodwa kunyango lwamanzi amdaka kunye nokuchithwa kwe-sludge, i-PolyDADMAC isebenza kakuhle kwi-sludge dehydration ngenxa yesakhiwo sayo esisodwa se-molecular kunye nokuxinana kwentlawulo.
Ubume bemolekyuli yePolyDADMAC inika ukuxinana kwentlawulo ephezulu kunye neempawu ezibalaseleyo ze-adsorption. Ngethuba lenkqubo yokuchithwa kwe-sludge, i-PolyDADMAC inokukhawuleza i-adsorb ebusweni be-sludge particles, ukunciphisa amandla okuhlambalaza phakathi kweengqungquthela ngokusebenzisa i-neutralization yombane, kwaye ikhuthaze ukubunjwa kwee-flocs ezinkulu phakathi kweengqungquthela. Ngelo xesha, amatyathanga e-molecular ye-PolyDADMAC anokwenza isakhiwo sothungelwano esisebenzayo, ukubambisa amaqhekeza amaninzi e-sludge kunye, ukukhahlela amanzi aphuma phakathi kweengqungquthela ze-sludge, kunye nokwenza i-clumps ekulula ukuyikhupha emanzini, ukwenzela ukuba umthamo wamanzi ungancitshiswa ukuya kwi-60-80% okanye ngaphantsi, kwaye umthamo ungancitshiswa nge-75-87%.
Xa kuthelekiswa neeflocculants zemveli, iPolyDADMAC inobunzima obuphezulu bemolekyuli kunye noxinaniso lwentlawulo, lunika isakhono esinamandla sokushukuma. Ukwengeza,PolyDADMACinomsebenzi ogqwesileyo wonyibiliko, kulula ukuyisebenzisa, kwaye ayivelisi ungcoliseko lwesibini. I-PD ngokwayo ayivelisi i-sedimentation njenge-alum, ngoko ke inani le-sludge elongezelelweyo linokuncitshiswa.Ezi zinzuzo zenza i-PolyDADMAC ibe nethemba elibanzi lesicelo kwintsimi yokuchithwa kwe-sludge.
Ubume bemolekyuli yePolyDADMAC inika ukuxinana kwentlawulo ephezulu kunye neempawu ezibalaseleyo ze-adsorption. Amaqela amaninzi e-cationic kwikhonkco yawo ye-molecular angasabela kunye namaqela e-anionic kumphezulu we-sludge particles ukwenza iibhondi ze-ionic ezizinzileyo, ezikhokelela kwi-adsorption enamandla. Le adsorption ayincedi kuphela ukunciphisa ukunyanzeliswa phakathi kwamaqhekeza, kodwa inceda ukwenza iiflocs ezinkulu.
Ukongeza kwisakhiwo seemolekyuli kunye neepropati zentlawulo ye-PolyDADMAC, ukugxininiswa kwayo kunye ne-dosage nazo zizinto ezibalulekileyo ezichaphazela umphumo we-sludge dehydration. Kuluhlu oluthile, njengoko ukuxinwa kwePolyDADMAC kunyuka okanye idosi inyuka, ukusebenza kokuthotywa kwamanzi kunokuphuculwa. Nangona kunjalo, ugxininiso oluphezulu kakhulu okanye idosi inokukhokelela kwisiphumo esichaseneyo, okukhokelela ekukhuselweni kwe-colloid, nto leyo enciphisa umphumo wokuphelelwa ngamanzi emzimbeni. Ke ngoko, kwizicelo ezisebenzayo, uvavanyo kunye nokulungelelaniswa kufuneka kuqhutywe ngokwenkqubo ethile yokucoca ugutyulo kunye neempawu ze-sludge ukumisela i-PolyDADMAC yoxinzelelo kunye nedosi.
Ixesha lokuposa: Sep-26-2024