Peb coj kev ncaj ncees thiab yeej-yeej raws li txoj cai kev ua haujlwm, thiab kho txhua lub lag luam nrog kev tswj xyuas nruj thiab saib xyuas.
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Tswj cov pa phem ib puag ncig nrog Columnar activated carbon
Cov huab cua thiab dej muaj kuab paug nyob rau hauv cov teeb meem tseem ceeb tshaj plaws hauv ntiaj teb no, muab cov ecosystems tseem ceeb, khoom noj khoom haus, thiab ib puag ncig tsim nyog rau tib neeg lub neej nyob rau hauv kev puas tsuaj. Cov dej qias neeg feem ntau tshwm sim los ntawm cov hlau hnyav ions, refractory organic pollutants, thiab kab mob-tshuaj lom, ...Nyeem ntxiv