Applied research on zeolite powder in ecological bed
沸石粉在污泥生态床中的应用研究

The effects of different zeolite powder dosage ratio on sludge dewatering,sedimentation,drying time,dry weight of plant roots in the ecological beds were studied,and the zeolite powder dosage ratio of 6% was chosen.The concentrations of nitrogen and phosphorus of sludge in the ecological bed were measured,and the results show that total phosphorus content decreased 13.2% and 12.2%;total nitrogen content decreased 48.3% and 49.2%;nitrate nitrogen content decreased 67.2% and 70.2%,respectively in the yellow iris beds and reed beds.