Method for removing low-concentration Pb (II) by combining heavy metal absorbent LAC/PAA with traditional water treatment process
An absorbent and heavy metal technology, applied in the direction of adsorption water/sewage treatment, water/sewage treatment, neutralization water/sewage treatment, etc., can solve the problems of limited application and development, high treatment cost, etc., to achieve convenient emergency dosing, economical Good benefit and high efficiency
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[0058] Example 1: Use XJ river water as raw water to configure Pb(II) contaminated water, pH=7.6, Pb(II) concentration 51μg / L, add 25mg / L LAC / PAA and absorb 20 minutes, the effluent Pb (II) The concentration is 8.6μg / L, which meets the requirements of the WHO water quality standards.
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[0059] Example 2: A water sample contaminated with Pb(II), pH=8.5, Pb(II) concentration is 46μg / L, 22mg / L LAC / PAA is added and adsorbed for 20 minutes, the effluent Pb(II) concentration is 7.6μg / L, which meets the requirements of the WHO water quality standards.
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[0060] Example 3: A water sample contaminated with Pb(II), pH=4.6, Pb(II) concentration is 35μg / L, pH is adjusted to 8.0, 20mg / L LAC / PAA is added to absorb 20 minutes, the water is discharged The Pb(II) concentration is 7.6μg / L, which meets the requirements of the WHO water quality standards.
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