Treatment Phosphorus Effect with Purified Diatomite

The effect of purifying phosphorus by diatomite and researching phosphorus removal theory of diatomite was focused in this paper. The paper includes the following main parts: experiment method and procedure, results and discussion and conclusion. The results indicated that the phosphorus removal rate of solution containing 2mg/L P was above 95% with 3.5g diatomite with pH being 3.0. The adsorption time was 20 minutes. The equilibrium equation of isothermal adsorption can be described with Freundlich equation. The diatomite is a proper removing phosphorus adsorbent dealing with the effluent from secondary biological treatment process. The phosphorus removal theory of diatomite is adsorption and surface complex reaction.