Ib.Introduction ntawm daim ntawv thov txoj cai

Thaum lub sij hawm painting txheej txheem, cov txheej txheem ntawm cov xim tsuas yog 40 mus rau 60%, thiab ntau tshaj li ib nrab ntawm cov xim splashes mus rau hauv cov huab cua los ua ib tug tshuaj tsuag pos huab, phem heev polluting huab cua thiab ib puag ncig. Txhawm rau tiv thaiv ib puag ncig zoo thiab ntxuav qhov chaw tsim kho, cov dej ntws tawm ntawm lub rooj muag tshuaj ntub dej feem ntau yog siv rau hauv kev lag luam pleev xim los ntes cov xim pleev xim oversprayed. Yuav kom tswj tau qhov kev ua tau zoo ntawm lub rooj muag tshuaj tsuag, txhim kho qhov chaw ua haujlwm tha xim, thiab ua kom lub cev huv si ua haujlwm ib txwm, ib qho me me ntawm cov tshuaj yuav tsum tau ntxiv rau thiab khaws cia hauv cov dej ntws, feem ntau hu ua xim pos huab coagulants. Nws tuaj yeem tiv tauj nrog cov xim pleev xim uas ntes tau los ntawm dej, thiab tom qab ntawd hnov ​​​​mob nrog nws thiab ua kom nws ruaj khov thiab tshem tawm, sib sau ua ke rau hauv flocculant nrog qee qhov me me, hu ua xim slag, thiab cais tawm ntawm dej, kom lub voj voog dej siv tau. rau lub sijhawm ntev. Xim pos huab coagulants feem ntau muaj xws li muaj zog alkali dispersing type, condensation adsorption type, water-based paint mist condensation type, thiab lwm yam. Cov khoom saum toj no tuaj yeem ua rau cov xim disstick thiab flocculate raws li hauv qab no: ua rau cov xim pos huab saponification, tshem tawm nws viscosity. , tsim cov dej-insoluble alkali xab npum tshuaj, dispersed hauv dej; Nyob rau tib lub sijhawm, cov xim pos huab yog condensed los ntawm neutralizing tus nqi ntawm txheej txheej ntawm cov xim pos huab. Lub condensed hais yog sib txuas rau hauv flocculant los ntawm kev sib tsoo nrog ib leeg, thiab tom qab ntawd cov polymer flocculant yog adsorbed thiab txuas mus rau qhov loj dua flocculant.

二.Yuav ua li cas kom raug txiav txim cov nyhuv ntawm cov xim pos huab flocculant

Cov nyhuv ntawm cov xim pos huab coagulant feem ntau txiav txim los ntawm slag, dej, ua npuas ncauj, tsw thiab lwm yam.
(1) Xim slag: Lub viscosity yuav tsum tsawg li tsawg tau, thiab cov kev ntsuam xyuas pom zoo yuav tsum yog tsawg kawg yog 3 mus rau 4 (xim slag yog granular lossis nplua xuab zeb).
(2) Dej: nyob rau hauv Eisenmann sab ntws slagging ntaus ntawv, ua ntej slagging thiab ua ntej ntxiv tus neeg sawv cev B, cov xim yuav tsum tau dispersed turbidity dej, thiab cov dej tom qab ntxiv tus neeg sawv cev B yuav tsum kom meej li sai tau, thiab cov dej zoo ntsuam xyuas yuav tsum. yuav tsum tsawg kawg yog qib 3 (me ntsis turbid).
(3) Ua npuas ncauj: qhov siab ntawm cov npuas dej hauv lub pas dej yuav tsum tsim nyog, thiab yuav tsum tsis txhob siab tshaj qhov siab ntawm cov npuas dej uas tsim los ntawm cov dej uas muaj cov tshuaj tsuas yog nyob rau tib lub sijhawm. Cov npuas dej yog siab dhau lawm, qhia tias kev sib cais ntawm cov xim thiab dej tsis zoo.
(4) Tsis hnov ​​tsw: Thaum lub sij hawm ua hauj lwm, yuav tsum tsis txhob muaj teeb meem tsw tsw ntxhiab tsw, uas qhia tau hais tias cov dej system muaj microbial txaus ntshai xws li mildew thiab kab mob, thiab tej zaum kuj yuav tshwm sim los ntawm kev sib cais tsis zoo ntawm cov xim thiab dej, tab sis kev siv. ntawm cov xim pos huab coagulants yuav tsis tsim cov ntxhiab tsw, thiab feem ntau cov xim pos huab coagulants ntxiv rau cov kab mob tua kab mob.

三.Cov yam ntxwv cuam tshuam cov nyhuv ntawm cov xim pos huab flocculant

(1) Hom xim. Txawm hais tias tsis muaj kev sib raug zoo ntawm hom resin thiab cov nyhuv ntawm kev siv, nws paub tias cov xim pos huab coagulants yog rhiab heev rau lub polarity ntawm cov resin. Xim av coagulants ntawm txawv polarity thiab hydrophilicity yuav tsum tau siv raws li rau cov xim sib txawv polarity.

(2) PH tus nqi lossis alkalinity. Nws twb paub lawm hais tias kom yog alkalinity los yog pH pab rau dissticking cov xim. Tus nqi pH siab dhau lawm, cov xim raug puas tsuaj rau cov khoom ruaj khov dispersed hauv dej tsis yooj yim rau flocculate, tsawg heev tsis tuaj yeem rhuav tshem tag nrho. Kev tswj dav dav yog 9.0, thiab kev tswj hwm tseem ceeb heev hauv kev ua haujlwm ntawm cov dej ntws.

(3) Cov txheej txheem pleev xim lub rooj muag khoom thiab cov txheej txheem xim slag tom qab kho. Cov txheej txheem kev siv tshuaj tua kab feem ntau suav nrog hom ntxhua khaub ncaws, hom kab hlau rhuav dej, cov ntaub thaiv dej - ntxhua khaub ncaws, hom dej swirl, Venturi hom thiab lwm yam, thiab cov kev siv slag tshem tawm feem ntau suav nrog cov phaj scraper, hom centrifugal, thiab lwm yam. Cov txheej txheem tshuaj pleev xim rau chav tsev, cov dej ntws ntws, kev tshaj tawm, thiab kev tshem tawm slag yuav cuam tshuam rau kev siv.

(4) hydrochemical yam. Cov impurities hauv dej, xws li hardness, yuav cuam tshuam qhov loj ntawm cov xim dispersion hais, yog li cuam tshuam qhov poob ntawm viscosity, yog li lub hardness yuav tsum tsawg li tsawg tau. Cov impurities qhia nyob rau hauv cov txheej txheem tshuaj pleev xim, xws li cov kuab tshuaj, tshwj xeeb tshaj yog cov kuab tshuaj uas tsis yog-polar, tuaj yeem txo qhov nqus ntawm cov dej los pleev xim pos huab.

(5) Kev siv tshuaj thiab kev siv tshuaj pleev xim coagulant. Yog tias qhov ntau npaum li cas me me, cov nyhuv condensation tsis zoo tagnrho, thiab yog tias nws loj dhau, nws muaj cov nyhuv dispersion thiab tsis tsim condensation. Cov txheej txheem sib txawv ntawm cov xim pleev xim rau cov txheej txheem yuav tsum tau siv ntau txoj kev pom zoo, uas yuav tsum tau tshawb xyuas thiab txiav txim siab hauv kev siv tiag tiag.

(6) Microbial yam. Lub concentration ntawm cov organic teeb meem nyob rau hauv cov dej circulating yog siab heev, thiab cov kev khiav hauj lwm tej yam kev mob ntawm lub circulating dej yog tsim nyog rau cov me nyuam thiab kev loj hlob ntawm microorganisms. Yog tias tsis ua tib zoo tswj, kev yug me nyuam ntawm cov kab mob yuav muaj kev cuam tshuam tsis zoo rau kev siv cov xim pos huab coagulants. Cov kab mob bactericidal lossis bacteriostatic yuav tsum tau ntxiv tsis tu ncua thaum qhov kub thiab txias.