Filter element cleaning method

The invention discloses a filter element cleaning method, and relates to the technical field of filter element cleaning, and the filter element cleaning method comprises the following steps: firstly, placing a filter element in an acid cleaning solution with the concentration of 2-5%, soaking for 3-6 hours, further taking out the filter element soaked in the acid cleaning solution, placing the filter element in a sodium hypochlorite solution with the concentration of 500ppm, soaking for 3-6 hours, and taking out the filter element; the method comprises the following steps of: soaking the filter element in a reverse osmosis reducing agent solution for 3-6 hours, taking out the filter element after soaking, soaking the filter element in a reverse osmosis reducing agent solution with the concentration of 500ppm for 3-6 hours, taking out the filter element after soaking, soaking the filter element in a sodium hydroxide solution with the concentration of 2-5% for 3-6 hours, and finally, washing the filter element