Treatment of the Effluent Containing High-Coneentrated Phenolic Aldehyde by PVA Fi-bre
PVA纤维处理高浓度酚醛废水的研究

In order to study the adsorption efficiency of PVA fibre and its affecting factors daring treating the effuent cf high-concentrated phenolic aldehyde, the threshold of adsorption capacity of the fibre, pH of the effluent and duration of the fibre soaked in it were investigated. The experimental results showed that the effect of phenol removal with PVA fibre was apparent, removal rate was above 98%, but the effect of aldehyde removal was not so obvious. The reproduction of PVA fibre, its life-span and treating the wastewater once again with it were also discussed. The efficiency of alkali-washing PVA fibre wai above 99%, and Its adsorption capacity didnot change by61 tests. After twice adsorption of the effuent, phenol concentration of outlet water was 0.3 mg/L, lower than the discharge standard provided by the State.