Lub tswvyim ntawm residual chlorine
Cov tshuaj chlorine residual yog cov tshuaj chlorine uas muaj nyob hauv dej tom qab cov dej tau chlorinated thiab tua kab mob.
Ib feem ntawm cov tshuaj chlorine no tau ntxiv thaum lub sijhawm kho dej los tua cov kab mob, cov kab mob, cov organic teeb meem thiab cov teeb meem inorganic hauv dej. Residual chlorine yog ib qho tseem ceeb qhia txog kev tua kab mob ntawm cov dej hauv lub cev. Cov tshuaj chlorine seem tuaj yeem muab faib ua ob pawg, uas yog cov tshuaj dawb residual chlorine thiab cov tshuaj chlorine ua ke. Cov chlorine dawb seem feem ntau suav nrog cov tshuaj dawb dawb hauv daim ntawv ntawm Cl2, HOCl, OCl-, thiab lwm yam.; Cov tshuaj chlorine ua ke yog cov tshuaj chloramine tsim tom qab cov tshuaj tiv thaiv ntawm cov tshuaj dawb chlorine thiab ammonium, xws li NH2Cl, NHCl2, NCl3, thiab lwm yam. Feem ntau hais lus, cov tshuaj chlorine residual hais txog cov tshuaj dawb seem, thaum tag nrho cov tshuaj chlorine seem yog qhov sib npaug ntawm cov tshuaj dawb seem thiab ua ke residual chlorine.
Tus nqi ntawm cov tshuaj chlorine seem feem ntau yog ntsuas hauv milligrams ib liter. Tus nqi ntawm cov tshuaj chlorine seem yuav tsum tsim nyog, tsis yog siab dhau lossis qis dhau. Cov tshuaj chlorine ntau dhau yuav ua rau cov dej tsis hnov tsw, thaum cov tshuaj chlorine tsawg dhau tuaj yeem ua rau cov dej tsis muaj peev xwm tswj tau kom tsis muaj menyuam thiab txo qhov kev nyab xeeb ntawm cov dej. Yog li ntawd, hauv kev kho dej kais dej, qib ntawm cov chlorine seem feem ntau yog saib xyuas thiab kho kom muaj kev nyab xeeb thiab tsim nyog ntawm cov dej zoo.
Lub luag haujlwm ntawm cov tshuaj chlorine hauv nroog kho cov dej phwj tuaj tua kab mob
1. Lub luag haujlwm ntawm tshuaj tua kab mob chlorine
Chlorination yog ib txoj hauv kev siv tshuaj tua kab mob rau kev kho dej hauv nroog. Nws lub luag haujlwm tseem ceeb yog raws li hauv qab no:
1. Cov tshuaj tua kab mob zoo
Hauv kev kho dej phwj tuaj, chlorine tuaj yeem tua cov kab mob thiab kab mob feem ntau. Chlorine inactivates microorganisms los ntawm oxidizing lawv cov proteins thiab nucleic acids. Tsis tas li ntawd, chlorine tuaj yeem tua cov qe thiab hlwv ntawm qee cov kab mob.
2. Cov nyhuv oxidizing ntawm cov dej zoo
Ntxiv chlorine tuaj yeem oxidize organic teeb meem hauv dej, ua rau cov organic teeb meem decomposed rau hauv inorganic acids, carbon dioxide thiab lwm yam khoom. Chlorine reacts nrog organic teeb meem nyob rau hauv dej los tsim oxidants xws li hypochlorous acid thiab chlorine monoxide, uas nyob rau hauv lem decompose cov organic teeb meem.
3. inhibit kab mob loj hlob
Ntxiv rau qhov tsim nyog cov tshuaj chlorine tuaj yeem cuam tshuam kev loj hlob ntawm qee cov kab mob, txo cov sludge hauv cov tshuaj tiv thaiv tank, thiab txo qhov nyuaj thiab cov nqi kho mob tom qab.
2. Qhov zoo thiab qhov tsis zoo ntawm cov tshuaj tua kab mob chlorine
1. Qhov zoo
(1) Cov tshuaj tua kab mob zoo: kev siv tshuaj chlorine tsim nyog tuaj yeem tua cov kab mob thiab kab mob feem ntau.
(2) Kev siv tshuaj yooj yim: Cov khoom siv tshuaj chlorine dosing muaj cov qauv yooj yim thiab yooj yim los tswj.
(3) Tus nqi qis: Tus nqi ntawm cov khoom siv tshuaj chlorine yog tsawg thiab yooj yim rau kev yuav khoom.
2. Qhov tsis zoo
(1) chlorine tsim cov khoom tsis zoo xws li hypochloronitrile: Thaum cov tshuaj chlorine reacts nrog nitrogen-muaj cov organic teeb meem, cov teeb meem xws li hypochloronitrile yog generated, uas yuav ua rau ib puag ncig muaj kuab paug.
(2) Chlorine residual teeb meem: Qee cov khoom siv tshuaj chlorine tsis hloov pauv thiab yuav nyob twj ywm hauv dej, cuam tshuam rau kev siv dej tom qab lossis teeb meem ib puag ncig.
3. Cov teeb meem uas yuav tsum tau them sai sai rau thaum ntxiv cov tshuaj chlorine
1. Chlorine concentration
Yog tias cov tshuaj chlorine concentration tsawg dhau, cov tshuaj tua kab mob tsis tuaj yeem ua tiav thiab cov dej phwj tuaj yeem tsis tuaj yeem tua cov kab mob zoo; Yog hais tias cov tshuaj chlorine concentration siab dhau lawm, cov ntsiab lus chlorine seem nyob rau hauv lub cev dej yuav siab, ua rau muaj kev puas tsuaj rau tib neeg lub cev.
2. Lub sijhawm txhaj tshuaj chlorine
Lub sijhawm txhaj tshuaj chlorine yuav tsum raug xaiv ntawm cov txheej txheem kawg ntws ntawm cov dej phwj tuaj kho kom tsis txhob muaj cov dej phwj tuaj ntawm cov chlorine los yog tsim cov khoom fermentation hauv lwm cov txheej txheem, yog li cuam tshuam rau cov tshuaj tua kab mob.
3. Kev xaiv cov khoom siv tshuaj chlorine
Cov khoom sib txawv ntawm cov tshuaj chlorine muaj cov nqi sib txawv thiab kev ua yeeb yam ntawm kev ua lag luam, thiab kev xaiv cov khoom yuav tsum ua raws li cov xwm txheej tshwj xeeb.
Hauv luv luv, ntxiv chlorine yog ib txoj hauv kev zoo rau kev kho dej phwj hauv nroog thiab tshuaj tua kab mob. Hauv cov txheej txheem kev kho dej phwj tuaj, kev siv thiab kev txhaj tshuaj chlorine tuaj yeem ua kom muaj kev nyab xeeb ntawm dej thiab txhim kho cov dej phwj tuaj. Txawm li cas los xij, tseem muaj qee cov ntsiab lus thiab kev tiv thaiv ib puag ncig uas yuav tsum tau them sai sai rau thaum ntxiv cov tshuaj chlorine.
Vim li cas chlorine ntxiv rau hauv kev kho dej:
Hauv cov txheej txheem dej ntws tawm ntawm cov kais dej thiab cov dej phwj tuaj kho, cov txheej txheem tshuaj tua kab mob chlorine tau siv dav los tua cov kab mob thiab kab mob hauv dej. Hauv kev kho cov dej txias hauv kev lag luam, cov tshuaj chlorine kom tsis muaj menyuam thiab cov txheej txheem tshem tawm cov algae kuj tseem siv, vim tias thaum lub sij hawm ua dej txias, vim cov evaporation ntawm ib feem ntawm cov dej, cov as-ham hauv cov dej yog concentrated, cov kab mob thiab lwm yam kab mob. yuav ua rau ntau tus lej, thiab nws yog ib qho yooj yim los tsim slime av, ntau slime thiab av yuav ua rau cov yeeb nkab txhaws thiab corrosion.
Yog tias cov chlorine seem nyob hauv cov kais dej siab dhau lawm, cov teeb meem tseem ceeb yog:
1. Nws yog qhov khaus heev thiab ua rau muaj kev phom sij rau txoj kev ua pa.
2. Nws yooj yim reacts nrog cov organic teeb meem hauv dej los tsim cov carcinogens xws li chloroform thiab chloroform.
3. Raws li cov khoom siv raw, nws yuav muaj kev cuam tshuam tsis zoo. Piv txwv li, thaum nws siv los tsim cov khoom lag luam nplej, nws muaj cov kab mob bactericidal ntawm cov poov xab hauv cov txheej txheem fermentation thiab cuam tshuam rau qhov zoo ntawm cov cawv. Vim tias cov tshuaj chlorine feem ntau yog siv los ntxuav cov kais dej, thiab cov chlorine seem yuav tsim cov carcinogens xws li chloroform thaum lub sij hawm cua sov. Kev haus dej mus ntev yuav ua rau muaj kev phom sij loj rau tib neeg lub cev. Tshwj xeeb tshaj yog nyob rau hauv xyoo tas los no, cov dej paug hauv av tau dhau los ua qhov hnyav dua, uas ncaj qha ua rau muaj kev nce ntxiv hauv cov ntsiab lus chlorine nyob hauv cov dej kais dej.
Cov txheej txheem ntsuas rau cov tshuaj chlorine seem yog dab tsi?
1. DPD colorimetry
cov
Lub hauv paus ntsiab lus: Raws li pH 6.2 ~ 6.5 cov xwm txheej, ClO2 thawj zaug cuam tshuam nrog DPD hauv kauj ruam 1 los tsim cov xim liab, tab sis tus nqi tsuas yog nce mus txog ib feem tsib ntawm nws cov ntsiab lus chlorine tag nrho (sib npaug txo ClO2 rau chlorite ions) ib qho. Yog hais tias cov qauv dej yog acidified nyob rau hauv lub xub ntiag ntawm iodide, chlorite thiab chlorate kuj react, thiab thaum neutralized los ntawm kev ntxiv ntawm bicarbonate, cov xim tshwm sim sib haum mus rau tag nrho cov muaj chlorine ntsiab lus ntawm ClO2. Kev cuam tshuam ntawm cov tshuaj dawb chlorine tuaj yeem tswj tau los ntawm kev ntxiv glycine. Lub hauv paus yog tias glycine tuaj yeem hloov cov tshuaj dawb tam sim ntawd rau hauv chlorinated aminoacetic acid, tab sis tsis muaj kev cuam tshuam rau ClO2.
2. Coated electrode txoj kev
Lub hauv paus ntsiab lus: Lub electrode yog immersed nyob rau hauv lub electrolyte chamber, thiab lub electrolyte chamber yog nyob rau hauv kev sib cuag nrog dej los ntawm ib tug ntxeem tau hydrophilic membrane. Hypochlorous acid diffuses mus rau hauv lub electrolyte kab noj hniav los ntawm cov ntxeem tau hydrophilic daim nyias nyias, ua ib tug tam sim no nyob rau hauv lub electrode nto. Qhov loj ntawm qhov tam sim no nyob ntawm qhov ceev ntawm hypochlorous acid diffuses rau hauv cov kab noj hniav electrolyte. Tus nqi diffusion yog proportional rau qhov concentration ntawm residual chlorine nyob rau hauv cov tshuaj. Ntsuas qhov loj tam sim no. Qhov concentration ntawm cov chlorine residual hauv cov tshuaj tuaj yeem txiav txim siab.
cov
3. Tsis tu ncua voltage electrode method (membraneless electrode method)
cov
Lub hauv paus ntsiab lus: Lub peev xwm ruaj khov yog tswj hwm ntawm qhov ntsuas thiab siv cov khoom siv hluav taws xob, thiab cov khoom ntsuas sib txawv yuav tsim qhov sib txawv tam sim no ntawm lub peev xwm no. Nws muaj ob lub platinum electrodes thiab siv electrode los tsim microcurrent ntsuas system. Ntawm qhov ntsuas electrode, chlorine molecules los yog hypochlorite tau noj, thiab qhov kev siv ntawm tam sim no generated muaj feem xyuam rau cov concentration ntawm cov chlorine residual nyob rau hauv dej.
Lianhua's portable residual chlorine ntsuas ntsuas LH-P3CLO siv txoj kev tshawb nrhiav DPD, uas yooj yim rau kev khiav lag luam thiab tuaj yeem tsim cov txiaj ntsig sai. Koj tsuas yog yuav tsum tau ntxiv 2 reagents thiab cov qauv coj mus kuaj, thiab koj tuaj yeem tau txais cov txiaj ntsig sib piv xim. Kev ntsuas ntau yog dav, cov kev xav tau yooj yim, thiab cov txiaj ntsig tau raug.
Lub sij hawm xa tuaj: Plaub Hlis-30-2024
