Kev nruab nrab kev kho tshuab ntawm cov kua qaub ntxuav lim dej khib nyiab yog ib kauj ruam tseem ceeb hauv cov dej acidic los ntawm dej qias. Nws tsuas yog nruab nrab acidic tshuaj rau cov tshuaj nruab nrab los ntawm cov tshuaj thiab cov tshuaj tiv thaiv tshuaj, yog li txo lawv cov kev phom sij rau ib puag ncig.

1. Needralization txoj ntsiab cai: kev saib xyuas nruab nrab yog cov tshuaj lom neeg cov kua qaub thiab alkali, tsim ntsev thiab dej. Acid Ntxuav Wastewater feem ntau muaj cov muaj zog acids xws li sulfuric acid thiab hydrochloric acid. Thaum kho, muaj txiaj ntsig tsim nyog ntawm cov tshuaj alkaline (xws li sodium hydroxide, lossis txiv qaub) yuav tsum tau ntxiv rau nruab nrab cov acidic keoster. Tom qab cov tshuaj tiv thaiv, tus nqi PHF ntawm cov dej khib nyiab yuav raug hloov kho kom zoo nkauj (feem ntau 6.5-8.5).

2. Xaiv cov neeg sawv cev nruab nrab: Cov neeg sawv cev nruab nrab muaj xws li sodiumyda hydroxide (txiv qaub), thiab lwm yam ntawm cov neeg sawv cev muaj kev lag luam zoo thiab kev lag luam zoo. Sodium hydroxide reacts sai sai, tab sis kev ua tib zoo ua haujlwm yuav tsum zam kom muaj npuas ntau dhau thiab txaws; Calcium hydroxide reacts maj mam, tab sis tuaj yeem tsim ib nag lossis daus ceev tom qab kev kho mob, uas yooj yim rau kev tshem tawm tom qab.

3. Tswj cov txheej txheem neutralization: thaum lub sijhawm nruab nrab, nws yog qhov tsim nyog los saib xyuas tus nqi ntawm cov neeg lim dej kom haum rau cov kua qaub uas tsim nyog. Kev siv cov txheej txheem tswj kev tsis siv neeg tuaj yeem ua tiav cov koob tshuaj lom zem thiab zam cov xwm txheej dhau los yog tsis muaj peev xwm. Tsis tas li ntawd, cov cua sov yuav tso tawm thaum lub sij hawm cov tshuaj tiv thaiv, thiab cov hlab kev tawm tsam tsim nyog yuav tsum tau txiav txim siab kom tsis txhob sov.

4. Tom qab kev kho mob: Tom qab kev txheeb xyuas dua, cov dej khib nyiab yuav tseem muaj cov khib nyiab tshem tawm thiab cov hlau hnyav. Txij ntawm no, lwm txoj kev kho mob xws li cov khoom noj ua kom zoo nkauj thiab ua kom pom tseeb tias cov qauv muaj peev xwm ua tau zoo ib puag ncig.

Los ntawm kev kho mob nruab nrab zoo siv tshuab, acid ntxuav wastewater tuaj yeem kho tau, txo nws txoj kev loj hlob ntawm kev tsim khoom lag luam.