Problems:
l. Aeration fan is uncontrollable.
2. Fluidized bed incinerator is inefficient.

Improvement measures:
1. Aeration fan - It is inappropriate to use an inverter. (Investment in the inverter to control three units of aeration fans simultaneously so as to avoid wind pressure change is too costly.) The problem was solved by the combination of interval operations and the control of the number of units.

2. Increase the efficiency of fluidized bed incinerator by using regenerative burner - A pair of burners, which are unified with a heat regenerator for preheating, burn alternately in a short cycle.

Effect: Power -1,200MWh/year, Oil -293kL/year, Total - 12.4% reduction

Problems:
1. Operation standard for air conditioner is not clear.
2. Operation standard for compressor is not clear.
3. There is room for improved use of steam.

Improvement measures:
1. Increase the standard preset temperature by 1oC.
2. Narrow the nighttime air conditioning area and extend the time.
3. Extend the ventilation (allowing fresh air enter, driving out foul air) interval.
4. Lower the discharge pressure of compressor by 0.098Mpa.
5. Stop the operation of two large compressors and install one small compressor for nighttime operation.
6. Decrease the revolution of the digester material feeder to stop the leakage of steam. 7. Decrease the number of boilers in operation (from 9 unit for night and day to 6 units during daytime and 2 units at night).
8. Decrease the blow volume of the boiler (in accordance with water quality).
Effect: Electric power- 681MWh/year, LPG- 96.7t/year
Total - 16.6% reduction