Abstract
Steel slag has already been used to deal with all kinds of wastewater due to its larger specific surface area,porosity and density,its easy solid-liquid separation and not easy to form secondary pollution. In order to ensure the influence of reaction conditions on the steel slag phosphorus removal effect,many factors such as phosphorus in sewage initial concentration,dosage of steel slag,steel slag particle size,temperature,p H value were investigated. The results showed that reaction equilibrium is faster when the initial concentration of phosphorus is higher,and the effects on total phosphorus removal is greater. With the increase of dosage of steel slag,the decrease of steel slag particle size,the quantity of phosphorus removal has a significant increase. Steel slag for phosphorus removal is appropriate in the acidic conditions,the rate of removal is highest when p H = 4. Steel slag has a little effect on treatment effect under the condition of temperature of 20 ~ 35 ℃.
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