Ib. Kev Taw Qhia Txog Txoj Cai Siv

Thaum lub sijhawm pleev xim, tus nqi pleev xim tsuas yog 40 txog 60% xwb, thiab ntau dua ib nrab ntawm cov xim txau mus rau hauv huab cua los ua cov pa tshuaj tsuag, ua rau huab cua thiab ib puag ncig muaj kuab paug heev. Yuav kom tiv thaiv ib puag ncig thiab ntxuav qhov chaw tsim kho kom zoo, lub tshuab dej ncig ntawm lub rooj tsuag ntub feem ntau siv hauv kev lag luam pleev xim los ntes cov pa tshuaj tsuag ntau dhau. Yuav kom tswj tau qhov ua tau zoo ntawm lub rooj tsuag, txhim kho qhov chaw ua haujlwm pleev xim, thiab ua kom lub tshuab ua haujlwm huv si, yuav tsum ntxiv me ntsis cov tshuaj lom neeg rau hauv thiab tswj cov dej ncig, feem ntau hu ua cov tshuaj pleev xim. Nws tuaj yeem sib cuag nrog cov xim uas dej ntes tau, thiab tom qab ntawd ua rau nws tsis ruaj khov thiab tawg, sib sau ua ke ua cov khoom me me, hu ua cov xim slag, thiab cais tawm ntawm dej, kom lub voj voog dej siv tau ntev. Cov tshuaj pleev xim feem ntau muaj xws li hom alkali dispersing muaj zog, hom condensation adsorption, hom condensation pa dej xim, thiab lwm yam. Cov khoom saum toj no tuaj yeem ua rau cov xim disperse thiab flocculate hauv cov hauv qab no: ua rau cov xim pa saponification, tshem tawm nws cov viscosity, tsim cov dej-insoluble alkali xab npum tshuaj, dispersed hauv dej; Tib lub sijhawm, cov xim pa yog condensed los ntawm neutralizing lub them ntawm txheej sab nraud ntawm cov xim pa. Cov khoom condensed yog bonded rau hauv flocculant los ntawm kev sib tsoo nrog ib leeg, thiab tom qab ntawd cov polymer flocculant yog adsorbed thiab bridged kom ua flocculant loj dua.

2. Yuav ua li cas thiaj txiav txim tau qhov cuam tshuam ntawm cov xim pleev xim flocculant kom raug

Cov nyhuv ntawm cov xim pleev xim coagulant feem ntau yog txiav txim los ntawm slag, dej, ua npuas ncauj, tsw thiab lwm yam.
(1) Cov xim pleev xim: Qhov viscosity yuav tsum me me li sai tau, thiab qhov ntsuas pom tseeb yuav tsum yog tsawg kawg 3 txog 4 (cov xim pleev xim yog cov xuab zeb me me lossis cov xuab zeb zoo).
(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 yog cov dej turbidity dispersed heev, thiab cov dej tom qab ntxiv tus neeg sawv cev B yuav tsum kom meej li sai tau, thiab qhov ntsuas dej zoo yuav tsum yog tsawg kawg yog qib 3 (me ntsis turbid).
(3) Ua Npuas Ncauj: qhov siab ntawm cov ua npuas ncauj hauv pas dej yuav tsum tsim nyog, thiab yuav tsum tsis txhob siab dua qhov siab ntawm cov ua npuas ncauj uas tsim los ntawm dej uas muaj cov tshuaj tsuas yog nyob rau hauv tib qho xwm txheej. Cov ua npuas ncauj siab dhau, qhia tias qhov sib cais ntawm cov xim thiab dej tsis zoo.
(4) Tsw Qab: Thaum lub sijhawm ua haujlwm tau teev tseg, yuav tsum tsis muaj ntxhiab tsw tsis zoo, uas qhia tau tias lub kaw lus dej muaj kev phom sij ntawm cov kab mob xws li cov pwm thiab cov kab mob, thiab kuj tseem yuav tshwm sim los ntawm kev sib cais tsis zoo ntawm cov xim thiab dej, tab sis kev siv cov xim pleev xim yuav tsis tsim cov ntxhiab tsw khaus, thiab feem ntau cov xim pleev xim tau ntxiv rau cov neeg sawv cev tua kab mob.

3. Cov yam ntxwv uas cuam tshuam rau cov nyhuv ntawm cov xim pleev xim flocculant

(1) Hom xim. Txawm hais tias tsis muaj kev sib raug zoo ntawm hom resin thiab qhov cuam tshuam ntawm kev siv, nws paub tias cov tshuaj pleev xim muaj zog rhiab rau qhov polarity ntawm cov resin. Cov tshuaj pleev xim muaj zog ntawm cov polarity sib txawv thiab hydrophilicity yuav tsum tau siv rau cov xim ntawm cov polarity sib txawv.

(2) PH tus nqi lossis alkalinity. Nws tau paub tias alkalinity lossis pH kom zoo pab txhawb rau qhov sib xyaw ntawm cov xim. Tus nqi pH siab dhau, cov xim raug rhuav tshem rau cov khoom ruaj khov uas tawg hauv dej nyuaj rau flocculate, qis dhau tsis tuaj yeem rhuav tshem tag nrho. Kev tswj hwm dav dav yog 9.0, thiab kev tswj hwm tseem ceeb heev rau kev ua haujlwm ntawm cov dej ncig.

(3) cov txheej txheem ntawm lub rooj pleev xim thiab cov txheej txheem tom qab kho cov xim slag. Cov txheej txheem chav pleev xim feem ntau siv suav nrog hom ntxuav, hom ntaub thaiv dej, hom ntaub thaiv dej - ntxuav, hom dej sib ntswg, hom Venturi thiab lwm yam, thiab cov txheej txheem tshem tawm slag feem ntau siv suav nrog phaj scraper, hom centrifugal, thiab lwm yam. Cov txheej txheem chav pleev xim, cov dej ntws, qhov ceev, thiab txoj kev tshem tawm slag yuav cuam tshuam rau kev siv.

(4) cov yam ntxwv hydrochemical. Cov khoom tsis huv hauv dej, xws li qhov nyuaj, yuav cuam tshuam rau qhov loj ntawm cov xim sib xyaw ua ke, yog li cuam tshuam rau qhov poob ntawm viscosity, yog li qhov nyuaj yuav tsum me me li sai tau. Cov khoom tsis huv uas tau qhia hauv cov txheej txheem pleev xim, xws li cov kuab tshuaj, tshwj xeeb tshaj yog cov kuab tshuaj uas tsis yog polar, tuaj yeem txo qhov muaj peev xwm nqus dej rau cov xim pos huab.

(5) Kev siv tshuaj thiab txoj kev siv tshuaj ntawm cov tshuaj pleev xim. Yog tias qhov tshuaj tsawg dhau, qhov cuam tshuam ntawm cov dej noo tsis zoo tagnrho, thiab yog tias nws loj dhau, nws muaj cov nyhuv dispersion thiab tsis tsim cov dej noo. Cov txheej txheem nqus xim sib txawv xav tau cov txheej txheem sib txawv ntawm kev siv tshuaj zoo tshaj plaws, uas yuav tsum tau tshawb nrhiav thiab txiav txim siab thaum siv tiag tiag.

(6) Cov yam ntxwv ntawm cov kab mob me me. Qhov concentration ntawm cov organic teeb meem hauv cov dej ncig yog siab heev, thiab cov xwm txheej ua haujlwm ntawm cov dej ncig yog qhov tsim nyog rau kev yug me nyuam thiab kev loj hlob ntawm cov kab mob me me. Yog tias tsis tswj hwm zoo, kev yug me nyuam ntawm cov kab mob me me yuav muaj kev cuam tshuam tsis zoo rau kev siv cov xim pleev xim. Cov neeg sawv cev tua kab mob lossis cov kab mob bacteriostatic yuav tsum tau ntxiv tsis tu ncua thaum qhov kub siab.