Tsim muaj peev xwm ntawm electrothermal tube electroplating wastewater kho

Tsim muaj peev xwm ntawm electrothermal tube electroplating wastewater kho

Kev kho dej khib nyiab tsim peev xwm

Lub peev xwm tsim yog 10m3 / h, thiab cov txheej txheem tseem ceeb yog:

(1) Lub sijhawm khaws cov dej khib nyiab hauv lub tank tswj yog 8 teev

(2) Lub inclined tube sedimentation tank muaj qhov siab siab siab ntawm 0.5m, lub sijhawm khaws cov dej khib nyiab ntawm 2h, thiab lub tank ntim ntawm 1.5m3 / m2h. Qhov yuav tsum tau muaj rau ob qhov tsis muaj nyob hauv Wen Jiabao tank yog 1.{{10}}.0h thiab 4-6m3/m2/h, feem,

(3) Qhov chaw lim dej ntawm lub phaj thiab ncej lim xovxwm yog 30m2.

(4) Kev siv tshuaj: Kev sib txuas ntxiv tau txais yuav: ua ntej, thaum kho cov pH rau 2-3 nrog sulfuric acid, txo cov hmoov hlau ntxiv thiab nplawm, thiab tom qab ntawd kho tus nqi pH ntawm cov dej nkag mus rau ib ncig ntawm 7 nrog na2co3 . Tus nqi ntawm PCA ntxiv yog 250mg / L; Txhawm rau nce qhov loj ntawm cov flocs generated thiab ceev cov sedimentation tus nqi, PAM (acrylamide ammonium) tau ntxiv ntxiv. Qhov koob tshuaj ntawm PAM yog 5mg / L

2.3 Txheej txheem ntws mechanism

1. Cov hlau hnyav xws li zinc, tooj liab, thiab npib tsib xee hauv electroplating dej khib nyiab yog tswj los ntawm kev ntxiv alkali rau pH tsis siv neeg regulator los tswj pH tus nqi ntawm lub pas dej ua ke rau 8-10, tsim insoluble hydroxide flocculent precipitates. Tshuaj tiv thaiv:

M2 plus plus 20H-=M(OH)2

Ntxiv cov saw zoo li polymer nrog adsorption zog rau coagulation thiab nplawm, kom precipitate hydroxide thiab lwm yam kuab paug los ntawm floc los tsim alum paj. Lub luag haujlwm ntawm kev pabcuam coagulant yog ua kom cov paj me me uas yooj yim tawg rau hauv cov paj loj alum los ntawm adsorption, tuav, entrapment ntawm coprecipitation thiab nag lossis daus loj hlob tom qab bridging. Nyob rau hauv tus txheej txheem ntawm flotation sib cais, qhov ntom ntom micro npuas tsim los ntawm lub siab ntawm cov hlab ntsha dej los ntawm kev kho siab ua haujlwm zoo tso tawm ua raws li cov floc, ntab ua ke los tsim cov khoom khib nyiab, khawb nws nrog cov av nkos, ntxiv lub cev qhuav dej thiab ua kom muaj zog nrog cov khoom siv. lim xovxwm, thiab tshem tawm nws tom qab ziab, Ua kom muaj kuab paug zoo los ntawm kev xa dej mus rau lub tank dej nruab nrab.

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