A backwash system and method for a waste treatment system employ a waste inlet duct extending into an accumulation of microbial growth media particles in a lower region of a tank, with a vertical duct having a duct outlet in an upper region of the tank. The method includes depositing a nanoparticle ink on a substrate surface in a pattern, the nanoparticle ink comprising set of nanoparticles and a set of solvents. During testing, a load is applied to the energy storage device for a predetermined time period, and the terminal voltage for the energy storage device is measured during the predetermined time period and compared with the reference voltage as a measure of the capability of the energy storage device to deliver an operational load. The installation package includes a linking relationship between an identification code of the program and a host identification code of a first PC which firstly installs the program thereinto, the linking relationship is used for determining if a PC is authorized to install the program thereinto. Last, the timing correction control circuit 6 controls a clock based on the phase difference, thereby to correct the reception reference timing.