Preparation method and application of magnesium-loaded acid modification expanded vermiculite composite adsorbing material

The invention discloses a preparation method and application of a magnesium-loaded acid modification expanded vermiculite composite adsorbing material. Acid modification expanded vermiculite is obtained through the acid modification of the expanded vermiculite; or after acid modification expanded vermiculite is further loaded with straw biochar, the modified vermiculite is loaded with a magnesiumsource for the pollution control of black and odorous water; the application achieves the synchronous recovery of nitrogen and phosphorus by adopting a struvite crystallization and precipitation method, improves the reaction efficiency and purifies water; the recycled product of the magnesium-loaded acid modification expanded vermiculite composite adsorbing material is controlled-release fertilizer with the excellent performances, is useful for farmland crop production; and the efficient utilization of the product is realized. 本发明公开了种载镁的酸改性膨胀蛭石复合吸附材料的制备方法及其应用。通过对膨胀蛭石进行酸改性得到酸改性膨胀蛭石，或者将酸改性膨胀蛭石进步负载上秸秆生物炭后，在改性的蛭石上负载上镁源以进行