Preparation of Zeolite Porous Adsorption Material Based on Nitrogen and Phosphorus Wastewater Treatment

Abstract:

Porous zeolite particles were prepared by adding adhensive and pore former with modified zeolite powder as raw material. The type and addition of adhensive, type and addition of pore-forming agent, water addition on the loss efficiency of the zeolite particle and the effect of the adsorption of nitrogen and phosphorus were focused on. The results show that polyvinyl alcohol (PVA) was better than cement and sodium carboxymethyl cellulose. The effect of sodiumon bicarbonate was better than that of activated carbon, and the micro-morphology of the porous zeolite particles were observed by scanning electron microscopy (SEM) and the results showed that the pore diameter and pore structure of the zeolite particles were significantly improved after adding sodium bicarbonate. The loss efficiency of porous zeolite particles at 0 was made by adding in the modified zeolite powder 1.2% PVA, 4% sodium bicarbonate, 40% water. The results showed a high adsorption of nitrogen and phosphorus, and the removal efficiency of nitrogen and that of the phosphorus in wastewater were 88.55% and 83.11% respectively. The adsorption kinetic of nitrogen, phosphorus on porous zeolite particles was following the pseudo-second-order.