The factors affecting the operation rate of ceramic filter are: acid washing and failure time of ceramic filter plate. Therefore, to improve the operation rate, it is necessary to reduce the time of failure.

Common failures are:

(1)The low degree of vacuum can not meet the requirements of production. The main reasons are the leakage of vacuum pipeline, the insufficient circulating water of the vacuum pump, the wear of the impeller of the vacuum pump, the wear of the distribution head, the breakage of the ceramic filter plate, the failure of the drainage valve of the filtrate bucket and the lower slurry slot material position.

(2)Backwashing water pressure is low or fluctuating. The main reason is backwash pipe system clogging or leakage, distribution head wear;

(3)The liquid level of the filtrate barrel is high. The main reason is that the impeller of the circulating pump or the pump shell is worn, the pressure is insufficient so that the drain valve can not be opened or the drain valve itself fails, and the pipeline between the filter bucket and the circulating water pump is leaked.

(4)The ceramic filter plate is not cleaned well during ultrasonic cleaning. The main reasons are the failure of the power box, the burn out of the power supply, the aging of the circuit, the burnout of the transducer, the breakdown of the ultrasonic box, and the low level of the pulp tank.

(5)The metering pump is not working properly and backwash water into the bucket of acid. The main reason is that the switch of the metering pump is not open, the diaphragm is worn, the frequency is too low, and the one-way valve of the acid pipe and the backwash pipe is worn.