Preparation method of catalyst for inhibiting release of harmful substances in desulfurized seawater

The invention provides a preparation method of a catalyst for inhibiting release of harmful substances in desulfurized seawater. The preparation method comprises the following steps: S1, washing moso bamboo powder, and drying to obtain a reaction raw material; s2, adding a KOH solution into the reaction raw material obtained in the step S1 for dipping and activating, filtering, drying, putting into a fixed bed reaction device, and carbonizing in an inert atmosphere to obtain porous activated carbon; s3, an HNO3/H2SO4 mixed acid solution is added into the porous activated carbon obtained in the step S2 for dipping and stirring, and oxidation modified activated carbon is obtained through washing and drying; and S4, adding a FeCl3/MnCl2 mixed solution into the oxidation modified activated carbon obtained in the step S3, dipping and stirring, drying, adding into a fixed bed reaction device, and roasting in an inert atmosphere to obtain the Fe/Mn supported activated carbon catalyst. 本发明提供一种抑制脱硫海水中有害物质释放的催化剂制备方法，包括