Ferric Chloride siv rau hauv kev kho dej li cas?

Ferric Chlorideyog ib qho tshuaj lom neeg uas muaj cov mis FeCl3. Nws siv dav hauv cov txheej txheem kho dej ua cov tshuaj coagulant vim nws txoj kev ua haujlwm zoo hauv kev tshem tawm cov khoom tsis huv thiab cov pa phem ntawm dej thiab feem ntau ua haujlwm zoo dua hauv dej txias dua li alum. Kwv yees li 93% ntawm ferric chloride siv rau hauv kev kho dej, piv txwv li cov dej khib nyiab, dej phwj tuaj, dej ua noj thiab dej haus. Ferric chloride feem ntau yog siv rau hauv daim ntawv khov kho ua cov tshuaj rau kev kho dej thiab cov dej khib nyiab.

Daim ntawv thov ntawm ferric chloride hauv kev kho dej:

1. Kev Coagulation thiab Flocculation: Ib qho ntawm kev siv tseem ceeb ntawm ferric chloride hauv kev kho dej yog ua ib qho coagulant. Thaum ntxiv rau hauv dej, ferric chloride reacts nrog dej los tsim ferric hydroxide thiab tom kawg nqus cov khoom me me, cov organic matter, thiab lwm yam impurities los ua cov khoom loj dua, hnyav dua hu ua flocs. Cov flocs no tuaj yeem yooj yim dua thaum lub sijhawm sedimentation lossis filtration txheej txheem, uas tso cai rau kev tshem tawm cov impurities ntawm dej.

2. Kev Tshem Tawm Phosphorus: Ferric chloride muaj txiaj ntsig zoo hauv kev tshem tawm phosphorus ntawm dej. Phosphorus yog ib qho khoom noj khoom haus uas pom muaj nyob rau hauv cov dej khib nyiab, thiab cov qib ntau dhau tuaj yeem ua rau eutrophication hauv cov dej uas tau txais. Ferric chloride tsim cov tshuaj tsis yaj nrog phosphorus, uas tom qab ntawd tuaj yeem tshem tawm los ntawm kev nag lossis lim dej, pab txo cov phosphorus hauv dej.

3. Kev Tshem Tawm Cov Hlau Hnyav: Ferric chloride kuj tseem siv los tshem tawm cov hlau hnyav, xws li arsenic, lead, thiab mercury, ntawm dej. Cov hlau no tuaj yeem muaj tshuaj lom heev thiab ua rau muaj kev phom sij rau kev noj qab haus huv yog tias muaj nyob rau hauv dej haus. Ferric chloride tsim cov hlau hydroxides uas tsis yaj lossis hlau oxychlorides, uas tom qab ntawd tuaj yeem tshem tawm los ntawm cov txheej txheem nag lossis lim dej, ua kom txo qis qhov kev sib sau ua ke ntawm cov hlau hnyav hauv dej.

4. Kev Tshem Tawm Xim thiab Tsw Qab: Ferric chloride muaj txiaj ntsig zoo rau kev tshem tawm cov xim thiab cov tshuaj ua rau tsw qab ntawm dej. Nws oxidizes cov organic compounds uas ua rau muaj xim thiab tsw qab, rhuav tshem lawv ua cov khoom me me, tsis zoo. Cov txheej txheem no pab txhim kho qhov zoo nkauj ntawm dej, ua rau nws tsim nyog dua rau kev haus, kev lag luam, lossis kev lom zem.

5. Kev Kho pH: Los ntawm kev tswj pH, ferric chloride tuaj yeem ua kom zoo dua qhov kev ua tau zoo ntawm lwm cov txheej txheem kho mob, xws li coagulation, flocculation, thiab disinfection. Qhov pH zoo tagnrho tuaj yeem pab tsim cov xwm txheej zoo tshaj plaws rau kev tshem tawm cov khoom tsis huv thiab cov kuab paug ntawm dej.

6. Kev Tswj Xyuas Cov Khoom Siv Tua Kab Mob: Ferric chloride tuaj yeem pab tswj kev tsim cov khoom siv tua kab mob (DBPs) thaum lub sijhawm kho dej. Thaum siv ua ke nrog cov tshuaj tua kab mob xws li chlorine, ferric chloride tuaj yeem txo qhov kev tsim cov DBPs xws li trihalomethanes (THMs) thiab haloacetic acids (HAAs), uas yog cov carcinogens. Qhov no txhim kho kev nyab xeeb tag nrho thiab qhov zoo ntawm cov dej haus.

7. Kev Tshem Tawm Cov Sludge: Ferric chloride kuj tseem siv rau hauv cov txheej txheem tshem tawm cov sludge hauv cov chaw kho dej khib nyiab. Nws pab ua kom cov sludge zoo los ntawm kev txhawb nqa kev tsim cov flocs loj dua, ntom dua, uas poob sai dua thiab tso dej tawm zoo dua. Qhov no ua rau kev ua haujlwm tshem tawm dej zoo dua thiab txo cov sludge, ua rau nws yooj yim dua thiab pheej yig dua los tuav thiab pov tseg cov sludge.

Ferric Chloride ua lub luag haujlwm tseem ceeb hauv ntau yam kev kho dej, suav nrog kev coagulation, tshem tawm phosphorus thiab cov hlau hnyav, tshem tawm xim thiab tsw, kho pH, tswj cov khoom seem tua kab mob, thiab tshem tawm cov sludge. Nws qhov kev ua tau zoo thiab kev ua haujlwm ua rau nws yog ib qho tshuaj muaj txiaj ntsig zoo hauv kev kho dej haus thiab dej khib nyiab, pab kom ntseeg tau tias muaj kev nyab xeeb, zoo, thiab kev ruaj khov ntawm cov peev txheej dej.