Treatment method of polymer-containing oil sludge and cleaning agent

The invention relates to a polymer-containing oil sludge treatment method and a cleaning agent. The method comprises the following steps: a thermochemical cleaning step: stirring polymer-containing oil sludge and a cleaning solution; the cleaning solution is formed by dissolving a cleaning agent in water, the cleaning agent is composed of a composite surfactant and sodium silicate according to the mass ratio of 1: 2-2: 1, and the composite surfactant is composed of fatty alcohol-polyoxyethylene ether and sodium dodecyl benzene sulfonate according to the mass ratio of 1: 1-4: 1; the cleaning temperature is 75-90 DEG C, the concentration of the cleaning solution is 4.5-6 g/L, the cleaning time is 0.5-3 h, and the liquid-solid ratio is (5-10): 1 ml/g; ultrasonic treatment: continuously performing ultrasonic treatment, standing for layering, and then performing separation treatment to obtain an oil layer, a water layer and a solid layer; the ultrasonic temperature is 35-60 DEG C, the power is 400-800 W, and the t