Chitosan Wastewater Kev Kho Mob

Nyob rau hauv cov dej hluav taws xob cov dej kho, cov ntsev siv roj txhuas aluminium, cov ntsev hlau, thiab cov ntsev hlau yuav cuam tshuam cov xim dej, thiab lwm yam .; Feem ntau nyob rau hauv kev kho dej huv ntau nyob rau hauv kev kho dej kom txaus, Yog li no, nrhiav cov khoom lag luam uas tsis ua rau ib puag ncig kev qias tuaj rau ib puag ncig los hloov cov tswv yim txhim kho tshiab niaj hnub no. Ntuj polymer Flocculants tau nyiam ntau tus neeg qaug zog vim yog lawv cov khoom siv roj ntau, kev nyab xeeb thiab tsis muaj tshuaj lom, thiab ua tiav biodegradation. Tom qab xyoo ntawm kev txhim kho, muaj ntau cov ntawm cov khoom siv polymer polymer nrog cov khoom sib txawv thiab cov hmoov txhuv nplej siab, chitosan thiab zaub cov kua nplaum tam sim no.

Naj noogCov Khoom Siv

Chitosan yog ib qho dawb amorphous, translucent flaky khoom, insoluble hauv dej tab sis soluble hauv cov khoom lag luam ntawm chitin. Feem ntau hais lus, Chitosan tuaj yeem hu tau Chitosan thaum N-acetyl pawg hauv chitin tau muab tshem tawm los ntawm ntau dua 55%. Chitin yog lub ntsiab tivthaiv ntawm exoskinetons ntawm cov tsiaj thiab kab, thiab yog cov organic loj thib ob hauv ntiaj teb tom qab cellulose. Raws li cov flocculant, chitosan yog ntuj, tsis muaj tshuaj lom thiab tsis taus. Muaj ntau pawg hydroxyl, amino pab pawg thiab ib co pab pawg n-acetylammino uas tuaj yeem tsim cov qauv acidic, thiab tuaj yeem tsim cov qauv network ntawm cov txheej txheem hydrogen los yog ionic sib khi. Tawb molecules, yog li nyuaj thiab tshem tau ntau cov tshuaj lom thiab muaj teeb meem hnyav hlau ions. Chitosan thiab nws cov derivatives muaj ntau yam ntawm kev siv, tsis yog tsuas yog nyob rau hauv kev lag luam, tshuaj ua liaj / teb, kev lag luam tshuaj, tab sis kuj hauv kev kho dej, tuaj yeem siv raws li adsorbent, cov flocculation cov neeg sawv cev, fungicides, kev sib pauv, membrane kev tso cai, thiab lwm yam Kev Tiv Thaiv Kev Tiv Thaiv Asmeskas yog a Kev huv tus neeg sawv cev rau cov dej haus vim nws cov txiaj ntsig tshwj xeeb hauv kev siv cov khoom siv dej thiab cov dej.

Daim ntawv thov ntawmNaj noogHauv kev kho dej dej

(1) Tshem tawm cov khib nyiab tshem tawm hauv lub cev dej. Nyob rau hauv ntuj dej, nws tiav niam txiv tsis zoo colloid system vim muaj cov kab ke ntawm cov pob zeb loj thiab lwm yam. Raws li kev sib tw thiab kev kos duab, thiab muaj zog sib txawv nyhuv rau cov tshuaj tua pov tseg. Piv nrog tsoos alum thiab polyacrylamide raws li flocculants, Chitosan tau zoo dua qhia cov nyhuv zoo. Ravid li al. Kawm txog cov nyhuv ntawm flocculation kev faib ntawm ib tus nqi Kaolin thaum muaj txiaj ntsig zoo ntawm PHUE, thiab cov khoom siv hluav taws xob tsawg heev, thiab cov khoom siv hluav taws xob zoo heev 1mg / l flocculant, qhov turbidity Tshem tawm tus nqi tshaj 90%, thiab cov flocs tsim tawm yog co thiab ceev nrawm, thiab tag nrho cov flocculation sedimentation sijhawm tsis pub tshaj 1h; Tab sis thaum tus nqi p pX txo qis lossis nce ntxiv, cov flocculation Efficiency breases, qhia tias tsuas yog nyob rau hauv ib tug heev nqaim xov tooj tau zoo polymerization nrog kaolin hais. Qee qhov kev tshawb fawb tau pom tias thaum tshem tawm hauv plab bentonite yog kho nrog chitosan, qhov tsim nyog p tus nqi ntau yog dav. Yog li ntawd, thaum lub turbid dej muaj cov lus zoo ib yam li Kaolin, nws yog ib qho tsim nyog los ntxiv tus nqi ntawm Bentonite ua cov sib xyaw ua ke los txhim kho polymerization ntawmnaj noogntawm cov lus. Tom qab ntawd, Ravid li al. pom tias

Yog tias muaj humus hauv lub kaolin lossis titanium dioxide kev ncua, nws yog ib qho yooj yim rau chitosan, vim tias qhov tsis zoo them rau cov nplais, thiab cov Humus ua rau nws yooj yim los kho tus nqi PH. Chitosan tseem pom superior flocculation cov khoom rau cov dej ntuj dej lub cev nrog cov sib txawv thiab alkalinity.

(2) Tshem Algae thiab cov kab mob los ntawm lub cev dej. Nyob rau hauv xyoo tsis ntev los no, qee cov neeg txawv teb chaws tau pib kawm cov adsorption thiab flocculation ntawm chitosan ntawm cov tshuab biological beliism xws li algae thiab cov kab mob. Chitosan tau muab cov nyhuv tshem tawm ntawm cov tshuaj ntsuab Algae, namely spirulina, oscillator algae, clorella thiab xiav-ntsuab algae. Cov kev tshawb fawb tau pom tias rau cov tsis huv Algae, tshem tawm yog qhov zoo tshaj plaws ntawm lub ph ntawm 7; Rau marine algae, cov pH yog qis dua. Qhov tsim nyog noj tshuaj ntawm Chitosan nyob ntawm seb kev pom zoo ntawm Algae hauv lub cev dej. Qhov siab dua ntawm cov algae, ntau npaum ntawm Chitosan yuav tsum tau ntxiv, thiab nce ntau npaum li cas ntawm Chitosan nyhav ua rau flocculation thiab nag lossis daus. Sai. Lub tshuab turbity tuaj yeem ntsuas qhov kev tshem tawm ntawm algae. Thaum tus nqi PH yog 7, 5mg / lnaj noogtuaj yeem tshem tawm 90% ntawm qhov turbidity nyob rau hauv dej, thiab ntau dua cov algae concentration, tus coarser cov floc hais thiab qhov zoo dua cov sedimentation kev ua tau zoo.

Lub tshuab kuaj me me tau pom tias cov algae uas tau raug tshem tawm los ntawm flocculation thiab sedimentation tsuas yog sib xyaw ua ke, thiab tseem nyob rau hauv lub xeev tsis huv thiab nquag. Txij li thaum Chitosan tsis ua rau muaj kev tsis zoo ntawm cov tsiaj hauv dej, cov khoom muaj zog tseem tuaj yeem siv lwm cov hluavtaws ntws tawm hauv dej. Qhov kev tshem tawm ntawm Chitosan ntawm cov kab mob yog qhov nyuaj. Los ntawm kev kawm flocculation ntawm Escherichia Coli nrog Chitosan, nws pom tias cov txheej txheem flidging, thiab chitosan tsim cov kab ke hydrogen ntawm cov khib nyiab ntawm tes. Lwm txoj kev tshawb nrhiav tau qhia tias kev ua tau zoo ntawm Chitosan Flocculation ntawm E. coli nyob ntawm tsis yog nyob ntawm lub chaw pov thawj tsis yog nyob ntawm nws qhov loj me.

(3) Tshem tawm cov khoom seem txhuas thiab ua kom huv cov dej haus. Aluminium ntsev flocculants yog siv dav nyob rau hauv cov txheej txheem kev kho dej haus, tab sis siv txhuas ntsev flocc Residual Aluminium hauv cov dej haus yog ib qho kev nyab xeeb loj rau tib neeg kev noj qab haus huv. Txawm hais tias chitosan kuj muaj qhov teeb meem ntawm dej nyob, vim tias nws yog lub ntuj tsis ua rau muaj kev phom sij, thiab nws tuaj yeem raug tshem tawm rau cov txheej txheem kev kho vaj tse tom qab. Tsis tas li ntawd, kev siv cov kev sib xyaw ntawm Chitosan thiab Inorganic Flocculants xws li polyaluminum chloride tuaj yeem txo cov ntsiab lus ntawm aluminium. Yog li ntawd, hauv kev haus dej haus, Chitosan muaj qhov zoo uas lwm yam hluavtaws organic polymer flocculants tsis tuaj yeem hloov.

Daim Ntawv Thov Chitosan hauv Kev Kho Mob Tso Tseg

(1) Tshem tawm cov hlau ions. Cov molecular saw ntawmnaj noogThiab nws cov derivatives muaj ntau cov amino pab pawg thiab cov pab pawg hydroxyl, yog li nws muaj cov nyhuv chelting rau ntau pawg hlau, thiab tuaj yeem ntes cov hlau thiab ntes cov hlau hnyav hauv kev daws. Catherine A. Eiden thiab lwm cov kev tshawb fawb tau pom tias kev tshaj tawm ntawm Chitosan rau PB2 + (hauv MMOL / G, feem ntau, thiab muaj qhov muaj peev xwm ua tau zoo. Zhang ting'an li al. Siv cov chitosan tshem tawm tooj liab los ntawm flocculation. Cov txiaj ntsig tau pom tias thaum lub pH tus nqi yog 8.0 thiab loj ntawm cov tooj liab hauv cov dej ntws tsawg dua 100 mg / u, tus tooj liab tshem tawm tau tshaj 99%; Cov kev txhawj xeeb loj yog 400 Lwm qhov kev sim ua pov thawj tias thaum lub sijhawm ph = 5.0 thiab kev tshem tawm cov neeg Chitosan rau Nickel Plating Khib Nyiab Cov kua yuav ncav cuag 72.25%.

(2) kho cov dej khib nyiab nrog cov protein ntau xws li cov khoom noj khoom haus dej. Thaum ua zaub mov noj, wastewater muaj ntau npaum li cas ntawm cov khib nyiab loj yog tso tawm. Chitosan Molecule muaj pab pawg nyob rau hauv, amino pab pawg thiab pab pawg hydroxyl. Nrog rau cov kev tawm tswv yim ntawm pab pawg amino, nws qhia lub luag haujlwm ntawm cov nyhuv cationic, tab sis kuj tseem tuaj yeem ua tau zoo flocculate thiab adsorb tsis zoo them cov dej zoo. Chitin thiab Chitosan tuaj yeem tsim cov complexes los ntawm hydrogen tsev nrog cov protein, amino acids, fatty acids, thiab lwm yam. sivnaj noog, Aluminium sulfate, Ferric sulfate thiab polypropylene phthalramide raws li flocculants kom rov qab muaj protein los ntawm nqaij nruab deg. Rov qab muaj protein ntau dua thiab effluent lub teeb kev hloov pauv tau tuaj yeem tau txais. Vim tias Chitosan nws tus kheej yog tsis muaj tshuaj lom thiab tsis muaj protein ntau, nws tuaj yeem siv cov khoom noj khoom haus thib ob, nws tuaj yeem siv cov khoom noj khoom haus theem nrab thiab rov qab siv, xws li ntxiv rau pub ua tsiaj pub.

(3) Kev kho cov luam ntawv thiab tawg ntho ntaw. Luam Ntawv thiab Dyeing Wastewater hais txog rau cov dej khib nyiab los ntawm cov paj rwb, ntaub rog, tshuaj lom neeg nyob rau hauv cov txheej txheem ntawm pretreatment, zas, luam ntawv thiab sau tiav. Nws feem ntau muaj cov ntsev, organic surfactants thiab dyes, thiab lwm yam, nrog cov khoom nyuaj, loj chroma thiab cov cim siab. , thiab txhim kho hauv kev coj ua ntawm anti-oxidation thiab anti-bookogradation, uas yog kev phom sij rau tib neeg kev noj qab haus huv thiab ib puag ncig. Chitosan muaj cov pab pawg AMino thiab cov pab pawg hydroxyl, feem ntau los ntawm hydrogenption, xws li los ntawm hydrogen adsector, xws li los ntawm hydrottatic kev sib zog, thiab lwm yam. Cov nyhuv. Nyob rau tib lub sijhawm, cov qauv molecular ntawm Chitosan muaj ntau cov pawg ua haujlwm tseem ceeb, uas ua rau muaj kev sib koom tes ua ke, uas tsis muaj kuab lom, thiab tsis yog tshuaj lom neeg dawb huv.

(4) daim ntawv thov hauv Sludge dewatering. Txog tam sim no, feem coob ntawm cov nroog dej phwj dej siv cov nroj tsuag cationic polyacrylamide los kho sludge. Kev xyaum tau qhia tias tus neeg sawv cev flocculation zoo thiab yog ib qho yooj yim rau cov dewsater sludge, tab sis nws cov seem, yog ib qho muaj zog carcinogen. Yog li ntawd, nws yog qhov ua haujlwm muaj txiaj ntsig los nrhiav nws hloov. Chitosan yog qhov sludge zoo, uas pab tsim cov kab mob sludge cov kab mob micelles ntawm kev daws teeb meem ntawm kev ua haujlwm ntawm cov txheej txheem sludge. Cov kev tshawb fawb tau pom tias Polyaluminium chloride / Chitosan Composide / Chitosan Composide / Chitosan, tab sis kuj tseem piv rau kev tiv thaiv ib zaug, thiab tus nqi ntawm kev ua haujlwm siab dua. Nws yog nrawm thiab yog qhov txias dua; Ib qho ntxiv, peb hom carboxymethyl chitosan (n-carboxymethyl chitosan thiab o-carboxymethyl chitosan) yog pom tias cov flocs tsim tau muaj zog thiab tsis yooj yim tawg, qhia tias cov nyhuv ntawm cov flocculant ntawm sludge dewatering tau zoo dua li ntawm cov neeg nyob ib txwm flocculants.

Naj noogThiab nws cov derivatives nplua nuj nyob rau hauv cov peev txheej, ntuj, tsis muaj tshuaj lom, tsis muaj peev xwm, thiab muaj ntau yam khoom tib lub sijhawm. Lawv yog cov dej ntsuab ntsuab. Nws cov khoom siv raw, chitin, yog tus kab mob loj thib ob ntawm cov organic thib ob hauv ntiaj teb. Yog li ntawd, nyob rau hauv xyoo tsis ntev los no, kev txhim kho Chitosan hauv kev kho dej muaj qhov pom kev loj hlob. Raws li lub ntuj polymer uas hloov pov tseg rau cov khoom muaj nqis, Chitosan tau pib ua haujlwm hauv ntau cov khoom lag luam tseem muaj qhov sib txawv nrog lwm lub teb chaws Advent. Nrog rau qhov tob ntawm cov kev tshawb fawb ntawm Chitosan thiab nws cov derivatives, tshwj xeeb tshaj yog hloov Chitosan nrog cov khoom siv hluavthatis zoo, nws muaj ntau dua thiab ntau daim ntawv thov tus nqi. Tshawb tawm cov ntawv thov cov thev naus laus zis ntawm Chitosan hauv kev kho cov dej thiab cov khoom siv dav dav muaj ntau yam kev ua lag luam dav dav thiab cov ntawv thov kev thov.

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