Studies Of Activated Carbon Adsorption On Wastewater Containing Polyhydric Phenol

This paper compares the optional four adsorption materials, as well as the adsorption performance analysis of the factors affecting the adsorption materials. Then based on the original adsorption materials adsorption shortcomings adsorption material modification and regeneration of test. The dynamic simulation and model of water, so in practice of high adsorption technology can occur when the emergency pollutants effectively convenient application.In the experiments, the adsorption materials selection of four kinds of alternative adsorption material: carbon, artificial zeolite, kaolin, tourmaline adsorption isotherm of limestone, comparing the result of activated carbon adsorption capacity about 20~30mg/g, artificial zeolite adsorption capacity of about 18~25mg/g, kaolin adsorption capacity of about 15~28mg/g, electric adsorption capacity of stone about 0~25mg/g. Four kinds of materials, the carbon adsorption capacity obviously is the highest. Further studies the factors affecting the adsorption capacity, the results show that the water temperature, pH value of activated carbon adsorption capacity on impact. Temperature and carbon adsorption capacity; Wastewater pH in July when activated near maximum absorption capacity, 30mg/g, waste acid or alkali are partial to reduce carbon adsorption capacity.Absorption material modification experiments, using different concentrations of ammonia, carbon dipping time, finally determined by 15% of the ammonia, carbon dipping 48h, adsorption capacity after, can improve the effect of the most obvious ascending up 56.4%. Regeneration trials, alcohol and water as a regenerative agent, ethanol, regeneration, as the renewable agent of activated carbon first regeneration, regeneration rate 87.3%, even after repeated investment will be activated regeneration and repeated use of renewable, third regenerated also can achieve 54.3% of regeneration rate and water as a renewable when first regeneration rate is only colonoscopy, much worse than ethanol regenerative effect. PH value of regenerative effect also affect, in alkaline conditions, obvious effects of regenerating activated carbon neutral condition than, acidic conditions and regeneration effect is reduced.High-risk pollutants, aimed at blocking integration technology, adopting high pollutants incident is the most effective means for timely treatment to reduce the harm caused by pollution. Adopting adsorption experiment, the dynamic model of water on the test, comparing different dam system, comparison of the results: three dam system in adsorption, absorption effect of early best total polyphenol removal of water, but it can achieve 76% of adsorption system, adsorption performance enduring 24h occurs through, Five dam system in short-term adsorption rate only when the adsorption, but continued 66%, good effect, after its adsorption of wastewater 48h total polyphenol removal are still 20.1%. Finally, all kinds of test more integrated risk pollutants emergency treatment model, this model can be easily the corresponding field conditions to ensure the quantity required activated carbon.