Granular illingated carbon rau pfas tshem tawm hauv cov hauv nroog dej khib nyiab: kev kawm sai sai.

Cov Lus Qhia Ua Haujlwm

 

Qhov kev kawm no feem ntau yog ntsuas qhov ua tau zoo ntawm cov pa roj carbon monoxide (GAC) hauv kev tshem tawm cov tshuaj tua hluav taws thiab polyfrooaloroalkyl (pfas). Txoj kev tshawb no ua haujlwm sai - teev Biochan kom tshem tawm cov GNIDEA, PFOS, PFHXS, los ntawm kev saib xyuas hauv theem nrab Wastewater. Cov txiaj ntsig kev tshawb fawb qhia tau tias Biochar tsis muaj txiaj ntsig hauv kev tshem tawm cov pa PFAA thiab PFOS, tab sis tsis yog txaus txaus rau luv {3 saw} saw pfas (xws li pfhxa). Ntxiv tus nqi ntsuas ntsuas tau hais tias kev lag luam kev lag luam uas tau tshem tawm cov chaw lim dej kom zoo, tshwj xeeb tshaj yog thaum muaj kev lag luam thiab cov nqi txij nkawm muaj siab. Txoj kev tshawb fawb kuj tau taw qhia tias kev tswj hwm ntawm Pfas yuav tsum tau tsom rau kev kho kom zoo ntawm cov dej khib nyiab, ntau dua li kev vam khom {{9 {9} cov yeeb nkab kho tshuab.

Graphical Abstract

 

Cov ntsiab lus ceev ceev ntawm cov duab thiab cov ntawv nyeem

Daim duab 1. (A) RSS Chaw Siv Siv hauv txoj haujlwm no. (B) daim duab schematic ntawm RSS teeb.

Daim duab 2. Tshem tawm ntawm Pfoa, Pfos, PfHxs thiab Pfhxs thiab Pfhxs los ntawm errf # 1 siv (a) GAC # 2 thiab (c) Biochar. Tus thawj zaug concentration ntawm ib qho PFA compound yog 200 ng / l, simulated Ebct yog 10 min, mus ze tshaj tawm yog 6 m / h, thiab Doch mg / l

Daim duab 3. Kev tshem tawm ntawm Pfoa, Pfos, PfHxs thiab PfHxs los ntawm errf # 2 siv (a) gac # 2 thiab (c) biochar. Tus thawj lub concentration ntawm ib qho PFA compound yog 200 ng / l, simulated Ebct yog 10 min, mus ze tshaj tawm yog 6 M / H, thiab DOC yog 5.6 mg / u.

 

Cov Tshawb Pom Tseem Ceeb

Cov ntsiab lus kev tsim kho tshiab thiab cov kev tshawb pom tseem ceeb ntawm cov haujlwm no suav nrog kev tshem tawm cov pa roj hmab rau ntawm Pfular ua haujlwm ntawm cov khoom siv dej khov kho thiab muab piv rau lwm cov ntaub ntawv adsorption (xws li biochar). Nws tau pom tias Biochar tau tshem tawm cov nyhuv tsis zoo rau pfas, qhia tias nws yuav tsis siv tau nyob hauv cov txheej txheem kev kho mob. Thib ob, txawm hais tias cov carbon granular tau zoo tshem tawm ib qho ntev-} saw rau ntawm luv ntawm pfas molecular qauv ntawm adsorption efficiency. Ib qho ntxiv, cov ntaub ntawv tseem ua tus ntsuas kev txheeb xyuas. Cov txiaj ntsig tau taw qhia tias kev lag luam muaj peev xwm ntawm kev thov gac, tshwj xeeb yog qhov muaj txiaj ntsig zoo hauv kev ua haujlwm ntawm kev ua haujlwm ntawm cov chaw siv hluav taws xob hauv nroog. Thaum kawg, cov kev tshawb fawb qhia tias tswj cov sab ntws hauv cov ntoo lim dej (xws li sludge dewatering Flow) lossis kev tswj hwm cov tswv yim rau pfas tshem tawm.