Flocculanthangata e bitsoa "industrial panacea", e nang le mefuta e mengata ea ts'ebeliso.E le mokhoa oa ho matlafatsa karohano e tiileng-metsi tšimong ea phekolo ea metsi, e ka sebelisoa ho matlafatsa pula e ka sehloohong ea likhoerekhoere, phekolo ea flotation le pula ea bobeli ka mor'a mokhoa oa sludge o kentsoeng.E ka boela ea sebelisoa bakeng sa phekolo ea thuto e phahameng kapa phekolo e tsoetseng pele ea likhoerekhoere.Ka kalafo ea metsi, hangata ho na le lintlha tse amang phello ea coagulation (tekanyetso ea lik'hemik'hale), lintlha tsena li rarahane ho feta, ho kenyelletsa mocheso oa metsi, boleng ba pH le alkalinity, mofuta le khatello ea litšila metsing, maemo a kantle a polokelo ea metsi, jj. .
1. Tšusumetso ea mocheso oa metsi
Mocheso oa metsi o na le tšusumetso e kholo tšebelisong ea lithethefatsi, le mocheso o tlase oa metsi mariha
e na le tšusumetso e kholo ea tšebeliso ea lithethefatsi, eo hangata e lebisang ho thehoeng butle ha li-flocs tse nang le likaroloana tse ntle le tse hlephileng.Mabaka a mantlha ke:
The hydrolysis ea inorganic letsoai coagulants ke karabelo endothermic, 'me hydrolysis ea mocheso tlaase metsi coagulants ho thata.
The viscosity ea metsi a mocheso o tlase o moholo, e fokolisang motsamao oa Brownian oa likaroloana tsa litšila ho
metsi le ho fokotsa monyetla oa ho thulana, e leng e sa loketseng ho destabilization le aggregation ea colloids le ama kholo ea flocs.
Ha mocheso oa metsi o le tlase, hydration ea likaroloana tsa colloidal e ntlafatsoa, e sitisang ho kopana ha likaroloana tsa colloidal, hape e ama matla a ho khomarela pakeng tsa likaroloana tsa colloidal.
Mocheso oa metsi o amana le pH ea metsi.Ha mocheso oa metsi o le tlase, boleng ba pH ba metsi boa eketseha, 'me boleng ba pH bo lumellanang le ho kopanya le bona bo tla eketseha.Ka hona, mariha libakeng tse batang, ho thata ho fumana phello e ntle ea coagulation le haeba palo e kholo ea coagulant e eketsoa.
2. pH le Alkalinity
PH ea boleng ke pontšo ea hore na metsi a na le asiti kapa alkaline, ke hore, pontšo ea mahloriso a H + metsing.Boleng ba pH ba metsi a tala bo ama ka ho toba karabelo ea hydrolysis ea coagulant, ke hore, ha boleng ba pH ba metsi a tala bo le ka har'a mefuta e itseng, phello ea coagulation e ka tiisetsoa.
Ha coagulant e kenngoa metsing, khatello ea H + metsing e eketseha ka lebaka la hydrolysis ea coagulant, e leng se etsang hore pH ea metsi e theohe le ho sitisa hydrolysis.Ho boloka pH ka har'a sebaka se nepahetseng, metsi a lokela ho ba le lintho tse lekaneng tsa alkaline ho fokotsa H+.Metsi a tlhaho a na le tekanyo e itseng ea alkalinity (hangata HCO3-), e ka fokotsang H + e hlahisoang nakong ea hydrolysis ea coagulant, 'me e na le phello ea ho thibela pH boleng.Ha alkalinity ea metsi a tala e sa lekana kapa coagulant e eketsoa haholo, boleng ba pH ba metsi bo tla theoha haholo, bo senya phello ea coagulation.
3. Tšusumetso ea tlhaho le ho bokellana ha litšila metsing
The phatsa boholo le chargeability ea SS ka metsing tla ama phello coagulation.Ka kakaretso, bophara ba karoloana bo nyane ebile bo tšoana, 'me phello ea coagulation e fokola;motsoako oa likaroloana ka metsing o tlaase, 'me monyetla oa ho thulana ha likaroloana o monyenyane, o seng molemo bakeng sa ho kopanya;ha turbidity e le khōlō, e le ho senya colloid ka metsing, tšebeliso ea lik'hemik'hale e hlokahalang e tla eketseha haholo.Ha palo e kholo ea lintho tse phelang e le teng ka metsing, e ka adsorbed ke likaroloana tsa letsopa, kahoo e fetola litšoaneleho tsa holim'a likaroloana tsa pele tsa colloidal, e leng ho etsa hore likaroloana tsa colloidal li tsitsitse haholoanyane, tse tla ama ka ho teba phello ea coagulation.Ka nako ena, oxidant e tlameha ho kenngoa metsing ho senya phello ea lintho tse phelang, ho ntlafatsa phello ea coagulation.
Matsoai a qhibilihisitsoeng ka metsing a ka boela a ama phello ea coagulation.Ka mohlala, ha palo e kholo ea li-ion tsa calcium le magnesium li le teng metsing a tlhaho, e thusa ho coagulation, ha palo e kholo ea Cl- e sa khone ho kopanya.Nakong ea likhohola, metsi a mangata a matla a nang le humus a kena semeleng ka lebaka la ho hloekisoa ha metsi a pula, 'me tekanyo ea pre-chlorination le coagulant e sebelisoang hangata e itšetlehile ka sena.
4. Tšusumetso ea maemo a kantle a ho boloka metsi
Maemo a motheo bakeng sa ho bokellana ha likaroloana tsa colloidal ke ho senya likaroloana tsa colloidal, le ho etsa hore likaroloana tsa colloidal tse sa tsitsang li thulane.Mosebetsi o ka sehloohong oa coagulant ke ho senya likaroloana tsa colloidal, 'me moferefere o ka ntle oa hydraulic ke ho etsa bonnete ba hore likaroloana tsa colloidal li ka kopana ka ho feletseng le coagulant, e le hore likaroloana tsa colloidal li thulane le tse ling ho etsa li-flocs.
E le ho etsa hore likaroloana tsa colloidal li kopane ka ho feletseng le coagulant, coagulant e tlameha ho qhalakanngoa ka potlako le ka mokhoa o ts'oanang likarolong tsohle tsa 'mele oa metsi ka mor'a hore coagulant e kenngoe ka metsing, e tsejoang e le ho kopanya ka potlako, e hlokahalang ka hare ho 10 ho ea ho 30. metsotsoana le metsotso e sa feteng 2 ka ho fetisisa.
5. Tšusumetso ea mojaro oa tšusumetso ea metsi
Ho tsieleha ha metsi ho bolela ho tsukutleha ha metsi nako le nako kapa ho se na nako ea metsi a tala, ao ka tšohanyetso a fetohang haholo.Tšebeliso ea metsi a litoropong ea lits'oants'o tsa metsi le ho lokisoa ha bophahamo ba metsi a holimo ho tla ama metsi a kenang setsing, haholo maemong a phahameng a phepelo ea metsi hlabula, e leng se etsang hore metsi a kenang setsing a fetohe haholo, e leng se tla etsa hore litekanyetso li fetohe khafetsa. ea lik'hemik'hale.'Me phello ea metsi ka mor'a ho teba ha e ntle haholo.Ke habohlokoa ho hlokomela hore phetoho ena ha e eketsehe ka ho toba.Ka mor'a moo, ela hloko ho shebella alum ka tanka ea karabelo, e le hore u se ke ua senya phello ea coagulation ka lebaka la tekanyo e feteletseng.
6. Flocculantmehato ea ho boloka
Ho phaella ho lintlha tse ka holimo, ho boetse ho na le mehato e meng ea ho boloka lithethefatsi, e kang ho eketsa nako ea ho sisinyeha ka har'a letamo la mokelikeli, ho fokotsa pula ea likaroloana tse tiileng tsa moriana, ho tsitsisa lithethefatsi le ho boloka tšebeliso ea lithethefatsi.
Haeba polyacrylamide e batla ho boloka litšenyehelo tse sebelisoang, hoa hlokahala ho khetha mohlala o nepahetseng.Molao-motheo ke ho khetha polyacrylamide e nang le phello e ntle ka ho fetisisa ea phekolo, e theko e boima ha se hakaalo hore e molemo ka ho fetisisa, 'me u se ke ua leka ho ba theko e tlaase ho baka phello e mpe ea phekolo ea metsi a litšila, empa eketsa litšenyehelo.Khetha moemeli o sa fokotseng feela mongobo oa seretse, empa hape o fokotsa tekanyo ea mochine oa lisebelisoa.Etsa liteko tsa flocculation ka lisampole tsa meriana tse fanoeng, khetha mefuta e 'meli kapa e meraro ea meriana e nang le liphello tse ntle tsa liteko, ebe u etsa liteko tsa mochine ka ho latellana ho bona phello ea ho qetela ea seretse le ho fumana mefuta ea ho qetela ea meriana.
Polyacrylamide ka kakaretso ke likaroloana tse tiileng.E hloka ho lokisoa ka tharollo ea aqueous e nang le solubility e itseng.Hangata mahloriso a pakeng tsa 0.1% le 0.3%.Ho tsepamisitsoe haholo kapa ho tšesaane haholo ho tla ama phello, ho senya lithethefatsi, ho eketsa litšenyehelo, le ho qhaqha polymerization ea granular.Metsi a ntho e lokela ho hloeka (joaloka metsi a pompo), eseng likhoerekhoere.Metsi a mocheso oa kamore a lekane, ka kakaretso ha ho hlokahale ho futhumatsa.Ha mocheso oa metsi o le tlase ho 5 ° C, ho qhibiliha ho lieha haholo, 'me lebelo la ho qhibiliha le potlakisa ha mocheso oa metsi o eketseha.Empa ka holimo ho 40 ℃ e tla potlakisa ho senyeha ha polymer le ho ama phello ea tšebeliso.Ka kakaretso, metsi a pompo a loketse ho lokisa tharollo ea polymer.Asiti e matla, alkali e matla, metsi a letsoai a phahameng ha a tšoanelehe bakeng sa ho itokisa.
Ela hloko nako ea ho phekola ha ho lokisoa moemeli, e le hore moemeli a ka qhibiliha ka ho feletseng ka metsing 'me a se ke a kopanya, ho seng joalo e ke ke ea baka litšila feela, empa hape e tla ama phello ea tlhahiso ea seretse.Lesela la sefe le liphaephe le tsona li atisa ho thibeloa, e leng ho bakang litšila khafetsa.Hang ha e entsoe ka tharollo, nako ea polokelo e lekanyelitsoe.Ka kakaretso, ha motsoako oa tharollo e le 0.1%, tharollo ea polymer e seng anionic ha ea lokela ho feta beke e le 'ngoe,' me tharollo ea cationic polymer ha ea lokela ho feta letsatsi le le leng.
Ka mor'a ho lokisoa ha moemeli, nakong ea ts'ebetso ea dosing, ela hloko phetoho ea boleng ba seretse le phello ea seretse, 'me u lokise litekanyetso tsa moemeli ka nako ho finyella tekanyo e ntle ea dosing.
Moriana o tlameha ho bolokoa sebakeng se omeletseng sa polokelo, 'me mokotla oa meriana o lokela ho koaloa.Ha u sebelisoa, sebelisa ka hohle kamoo ho ka khonehang, 'me u tiise meriana e sa sebelisoang ho qoba mongobo.Ha ho lokisoa meriana, ho lokela ho hlokomeloa hore ho se ke ha etsoa ka hohle kamoo ho ka khonehang, 'me metsi a behiloeng ka nako e telele a na le hydrolyzed habonolo' me a ke ke a hlola a sebelisoa.
Lisebelisoa tse tsamaisoang hantle, basebetsi ba fumanang chelete e khethehileng, le litšebeletso tse ntle ka mor'a thekiso;Hape re lelapa le leholo le kopaneng, mang kapa mang ea lulang le mokhatlo o bohlokoa "kopano, boikemisetso, mamello" bakeng sa Quots bakeng saPolyacrylamideFlocculamide Anionic Cationic Nonionic Water Treatment Polyacrylamide, Re amohela ka mofuthu metsoalle e tsoang mefuteng eohle ea bophelo ba letsatsi le letsatsi ho tsoma tšebelisano 'moho le ho theha bokamoso bo botle le bo botle ho feta." polyelectrolyte"
Litlhaloso bakeng sa Phekolo ea Metsi a Lik'hemik'hale le Matlapa a China, Ka matla a matlafalitsoeng le mokoloto o tšepahalang haholoanyane, re bile mona ho sebeletsa bareki ba rona ka ho fana ka litšebeletso tsa boleng bo holimo le litšebeletso, 'me re ananela tšehetso ea hau ka tieo.Re tla leka ho boloka setumo sa rona se setle sa ho ba morekisi ea molemo ka ho fetisisa lefatšeng.Haeba u na le lipotso kapa maikutlo, u lokelaikopanye le ronaka bolokolohi.
Nako ea poso: Nov-04-2022