Method for collecting inert particles in kitchen waste slurry based on venturi-type particle collector

A method for collecting inert particles in a kitchen waste slurry, characterized by comprising:

• (1) by testing an initial flow velocity, and testing and counting an initial concentration and a density of the inert particles in the kitchen waste slurry in a specific pipe segment, determining design parameters, an optimal arrangement position and working conditions of the collecting apparatus, and estimating a removal amount of the inert particles and a number and a cycle of arranged collectors;
• (2) arranging the Venturi-type inert particle collector at the optimal arrangement position determined in step (1), hanging a filter mesh in the collection apparatus, and confirming an interface of the pipeline to be firm;
• and performing a preliminary settlement test, and adjusting and optimizing the parameters;
• (3) calculating a reasonable recovery cycle of the inert particles by the concentration and the density of the inert particles measured and estimated in step (1);
• after the end of settlement collection in each test, manually opening a collection pipeline port, discharging the settled inert particles by means of a collection pipeline, and adjusting the position and the settlement cycle of the collector according to the collection condition;
• and enabling the collected inert substances to enter a pretreatment and slag outlet system, and enabling the slurry passing through the filter mesh to return to a pretreatment system;
• (4) repeating step (3) until a stable inert material recovery cycle is obtained by adjustment, which forms a processized collection system for the inert particles in the kitchen waste slurry, and reduces a content of the fine inert particles in the slurry;
• and entering a sustainable removal mode stage.