Dicyandiamide formaldehyde resin decoloring agent

Phakathi konyango lwamanzi amdaka kwimizi-mveliso, ukuprinta nokudaya amanzi amdaka yenye yezona ndawo zinzima ukunyanga. Inomxube ontsonkothileyo, ixabiso eliphezulu le-chroma, uxinaniso oluphezulu, kwaye kunzima ukuwohloka. Yenye yezona ndawo zinzima nezinzima ukunyanga amanzi amdaka kwimizi-mveliso engcolisa okusingqongileyo. Ukususwa kwe-chroma kunzima nangakumbi phakathi kwezona ngxaki.

Phakathi kweendlela ezininzi zokuprinta nokudaya amanzi amdaka, ukusetyenziswa kwe-coagulation yeyona ndlela isetyenziswa kakhulu kumashishini. Okwangoku, ii-flocculants eziqhelekileyo ezisetyenziswa kumashishini okuprinta nokudaya amalaphu kwilizwe lam zii-flocculants ezisekwe kwi-aluminium kunye ne-iron-based. Isiphumo sokususa umbala asisihle, kwaye ukuba idayi esabelayo isusiwe umbala, akukho siphumo sokususa umbala, kwaye kuya kusekho ii-ion zesinyithi emanzini acociweyo, okusenobungozi kakhulu emzimbeni womntu nakwindalo esingqongileyo.

I-Dicyandiamide formaldehyde resin decoloring agent yi-organic polymer flocculant, uhlobo lwetyuwa ye-quaternary ammonium. Xa ithelekiswa ne-flocculants eqhelekileyo yokususa umbala, inesantya sokuqubha esikhawulezayo, idosi encinci, kwaye ichaphazeleka ziityuwa ezihlala kunye, i-PH kunye neengenelo ezifana nefuthe elincinci lobushushu.

I-dicyandiamide formaldehyde resin decoloring agent yi-flocculant esetyenziselwa kakhulu ukususa umbala kunye nokususa i-COD. Xa uyisebenzisa, kucetyiswa ukuba ulungise ixabiso le-pH lamanzi amdaka libe lelo lingathathi cala. Nceda unxibelelane neengcali zeendlela ezithile zokusebenzisa. Ngokwentsebenziswano emininzi, impendulo evela kubavelisi bokuprinta kunye nokudaya kukuba i-dicyandiamide formaldehyde resin decolorizer inefuthe elikhulu ekususeni umbala wokuprinta kunye nokudaya amanzi amdaka. Izinga lokususa i-chroma linokufikelela ngaphezulu kwe-96%, kwaye izinga lokususa i-COD nalo lifikelele ngaphezulu kwe-70%.

Ii-flocculants ze-polymer zendalo zaqala ukusetyenziswa ngeminyaka yoo-1950, ikakhulu ii-flocculants zokucoca amanzi ze-polyacrylamide, kwaye i-polyacrylamide inokwahlulwa ibe zii-non-ionic, i-anionic, kunye ne-cationic. Kweli nqaku, siza kuqonda i-acrylamide polymer dicyandiamide formaldehyde resin decolorizing flocculant efakwe ityuwa nge-quaternary amine phakathi kwee-flocculants ze-cationic organic polymer.

I-dicyandiamide formaldehyde resin decolorizing flocculant iqala ngokuphendula nge-acrylamide kunye ne-formaldehyde aqueous solution phantsi kweemeko ze-alkaline, emva koko iphendula nge-dimethylamine, ize ipholiswe kwaye ivalwe nge-hydrochloric acid. Imveliso igxininiswe ngokuphuma kwamanzi kwaye ihluzwe ukuze kufunyanwe i-acrylamide monomer evalwe nge-quaternized.

I-dicyandiamide-formaldehyde condensation polymer decolorizing flocculant yaziswa ngeminyaka yoo-1990. Inefuthe elihle kakhulu lokususa umbala wamanzi amdaka edayi. Kunyango lwamanzi amdaka anombala ophezulu kunye noxinzelelo oluphezulu, kusetyenziswa i-polyacrylamide okanye i-polyacrylamide kuphela. I-Polyaluminum chloride flocculant ayinakususa ngokupheleleyo umbala, kwaye emva kokongeza i-flocculant decolorizing, iyayiphelisa i-negative charge enamathele kwiimolekyuli zedayi emanzini amdaka ngokubonelela ngenani elikhulu le-cations kwaye ngaloo ndlela ingazinzi. Ekugqibeleni, kwenziwa inani elikhulu le-floccules, ezinokufunxa iimolekyuli zedayi emva kokuzinzisa kunye nokuzinzisa, ukuze kufezekiswe injongo yokususa umbala.

Indlela yokusebenzisa i-decolorizer:

Indlela yokusebenzisa i-flocculant esusa umbala ifana neye-polyacrylamide. Nangona le yokuqala ikwimo yolwelo, kufuneka ixutywe nge-10%-50%, ize yongezwe emanzini amdaka ize ixutywe ngokupheleleyo. Yenza iintyatyambo ze-alum. Izinto ezinombala emanzini amdaka anombala ziyaxutywa kwaye zikhutshwe emanzini, kwaye zixhotyiswe nge-sedimentation okanye i-air flotation ukuze kuphunyezwe ukwahlulwahlulwa.

Kwimizi-mveliso yokuprinta nokudaya, ilaphu kunye neminye, ukusetyenziswa kwamanzi kukhulu kakhulu kwaye izinga lokusetyenziswa kwakhona liphantsi. Ke ngoko, inkunkuma yezixhobo zamanzi ixhaphake kakhulu. Ukuba le nkqubo isetyenziselwa ukuqhuba unyango oluphambili kunye nokurisayikilisha la manzi amdaka emizi-mveliso anombala ophezulu kwaye anoxinzelelo oluphezulu, ayinakonga nje kuphela imithombo emininzi yamanzi amatsha emizi-mveliso, kodwa inokunciphisa ngokuthe ngqo ukukhutshwa kwamanzi amdaka emizi-mveliso, nto leyo ebaluleke kakhulu kwaye ifikelela kwinqanaba eliphezulu ekukhuthazeni uphuhliso oluzinzileyo lwemizi-mveliso yokuprinta, yokudaya kunye neyokulahlwa.

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