Kev tiv thaiv thiab kho cov calcium carbonate scrooting nyob rau hauv thim rov qab osmosis ua haujlwm

LSI thiab S & DSI Performance index

Rau cov dej brackish nrog tds tsawg dua lossis sib npaug rau 10, {1}}} ml / l, Langelier Performance index (LSI) yog siv los ua qhov taw qhia ntawm kev tau txais CACO3 scaling.

Lsi=Phc-Ps

Qhov twg PHC yog tus nqi ntawm lub ntsej muag zoo nkauj thiab PS yog tus nqi pH thaum CACO3 yog txaus

Thaum LSI ntau dua lossis sib npaug rau 0}}, caco3 qhov ntsuas yuav tshwm sim. Cov dej feem ntau yuav muaj qhov zoo thaum nws tsis kho.

Rau siab-salinity thawv dej lossis dej hiav txwv nrog TDS> 10, {2}} mg / u, stev / dsi) yog siv los ua qhov ntsuas ntawm CaCo3 Scaling.

S & DSI=Phc-Ps

Qhov twg PHC yog tus nqi ntawm lub ntsej muag zoo nkauj thiab PS yog tus nqi pH thaum CACO3 yog txaus

Thaum S & DSI ntau dua los yog sib npaug rau 0}}, caco3 qhov ntsuas yuav tshwm sim. Thaum muaj feem ntau ntuj high-sally-salinity dej los yog tsis kho, S & DSI feem ntau zoo. Txhawm rau tiv thaiv caco3 scaling, nws yuav tsum tau ua qhov tsis zoo los ntawm kev ntxiv cov kua qaub. Yog tias cov neeg txawj ntse ntxiv kom tiv thaiv kev sib tua caco3 nag lossis daus, nws tuaj yeem yog qhov zoo.

(1) Cov Kev Tshawb Fawb Cov Khoom Siv Raw Ua Si Zoo:

Cov khoom siv dej ua tau zoo yog cov tswv yim ua kom pom cov ntaub ntawv LSM

(2) pretricate softening txheej txheem:

Cov txheej txheem muag muag tsuas yog suav cov kua qaub ua si, cov kua qaub-soda softening, thiab resin softening. Cov txheej txheem ua si kom tsim nyog tau xaiv raws li cov dej ntim khoom thiab kev lag luam;

(3) Ro inlet acid thiab istiscalant ntxiv:

Thaum lub sij hawm tsim qauv, cov khoom siv hluav taws xob cia siab thiab cov ntawv sau rau ntxiv rau cov kua qaub thiab cov illiscalant;

(4) Nquag sim qhov kev coj ua ntawm daim nyias nyias lub plhaub ntawm thawj thiab theem thib ob ntawm cov kab mob osmosis. Yog tias qhov kev coj ua ntawm theem ob yog pom tias tsis txawv txav siab, qhov ua rau muaj kev tshawb nrhiav sai.

(1) Kev tshawb nrhiav dej zoo:

Yog tias lub Alkalinity thiab Hardness ntawm Ro Inlet dej yog qhov siab, thiab S & DSI Index tau suav nrog ntsuas cov dej tsis muaj ntau dua, nws txhais tau tias muaj kev pheej hmoo ntawm kev ntsuas;

(2) Cov ntaub ntawv kev ua haujlwm Cov Ntaub Ntawv:

Feem ntau, lub kaw lus yuav qhia tau qhov sib txawv loj ntawm ob theem, txo qis hauv cov dej ntau lawm hauv kev tshaj lij ntawm theem ob;

(3) Cov kua qaub tu ua tau zoo:

Thaum siv cov roj hydrochloric acid lossis citric acid rau kev ntxuav, ph ntawm cov kuab ntxuav tu sai sai, thiab cov dej ntau lawm tau rov qab kho cov kua qaub;

(4) Tshem tawm qhov kawg npog:

Muaj xim dawb los yog lub teeb daj inorganic nplai nyob rau saum npoo ntawm lub cim membrane kawg lossis xaus phaj ntawm theem kawg. Cov nplai inorganic yuav yog yaj nrog kua qaub.

Tom qab calcium carbonate scaling, kom raws sij hawm tu tshuaj yog qhov tsim nyog, thiab pickling feem ntau pom zoo;

Nws raug nquahu kom siv hydrochloric acid rau pickling. Yog hais tias scaling yog loj heev, xyuam xim rau cov hauv qab no thaum tu online:

a) Ph ntawm cov tshuaj pickling yog loj dua los yog sib npaug rau 3;

b) Kev ntws tsawg ntws los ntawm kev sib lwv, cov kev khiav dej siab yog nruj me ntsis txwv tsis pub muaj cov txheej txheem desalination;

C) Sijhawm cov sijhawm ntawm cov kua qaub los tuav cov ph ntawm cov tshuaj ntxuav.