Preparation method of defoaming agent for high-salt and high-organic-matter wastewater

The preparation method of the defoaming agent for the high-salt and high-organic-matter wastewater comprises the following preparation steps: a, putting the fatty alcohol polyether, the modified siloxane and the emulsifier into a reaction kettle, and uniformly stirring to prepare a first mixed solution; b, adding a dispersing agent and water into the first mixed solution at a constant speed, and emulsifying to obtain a second mixed solution; and c, adding a stabilizer into the second mixed solution to prepare the defoaming agent. The defoaming agent prepared by the preparation method provided by the invention is completely emulsified and uniformly dispersed in water, and the phenomena of demulsification, floating oil and the like are not easy to occur. The defoaming agent can achieve the effects of efficient and rapid defoaming and long-term foam inhibition on high-salt-content wastewater and high-organic-matter wastewater, and the problems of production faults and the like caused by foam are effectively avoi