Immersed ultrafiltration membrane chemical cleaning liquid medicine recycling method

The invention discloses a method for recycling chemical cleaning liquid medicine of an immersed ultrafiltration membrane. An immersed membrane pool, a chemical cleaning water tank and a neutralizing pool are included. An immersed ultrafiltration membrane assembly is arranged in the immersed membrane tank; a membrane pool emptying opening is formed in the bottom of the immersed membrane pool; one path connected with the membrane pool emptying port is a chemical cleaning medicine feeding and liquid medicine recycling pipeline and is communicated with a chemical cleaning water tank; the other path is communicated with the neutralization tank; the immersed ultrafiltration membrane assembly is communicated with a water supplementing opening in the upper part of the chemical cleaning water tank through a water producing pipe; an agent stock solution inlet is formed in the upper part of the chemical cleaning water tank; the lower part of the chemical cleaning water tank is of a cone bottom structure which is communi