Monitoring device, distributed sewage treatment equipment and monitoring method using the same

A monitoring device, sewage treatment equipment and monitoring method using the same. The monitoring device comprises a central processing unit (cpu), a digital signal input interface, an analog-digital conversion module, a rf unit, a memory, a power supply which provides power for each module, and an antenna connected to the rf unit. The rf unit is connected to gprs or cdma network via the antenna. The system comprises a plurality of distributed sewage treatment equipment, a plurality of monitoring devices, and an administrative mobile phone. A method of using the monitoring device to monitor distributed sewage treatment equipment is also provided. The invention achieves the real-time monitoring on distributed sewage treatment equipment, and benefits the popularization of the distributed sewage treatment technology.