Influence Factors of WasteWater from theWet Reclaiming Sodium Silicate Used Sand Treated by Diatom and Its Effects

The effects of different environmental and nutritional factors on waste water from the wet reclaiming sodium silicate used sand treated by diatom and its effects were researched in this paper.The factors include intensity and time of illumination,concentration of nitrogen and phosphorous,nitrogen-phosphorus ratio and ferric ion concentration.The results indicate that there is a good treatment effect when the diatom has a higher growing speed and biomass.About 44.1% sodium ion and 48.1%silicate ion were removed from the waste water after seven days' treatment.