Analysis and Forecasting of the Energy Consumption in Wastewater Treatment Plant

Table 4

Statistical description of energy consumption and influencing factors in different categories.

		Index1	Index2		Index3
	Mean	Std. Deviation	Mean	Std. Deviation	Mean	Std. Deviation
Energy consumption (kWh)	22452	1790.	22577	1965	21483	1738
Inflow loads (10^4m^3)	7.751	0.560	7.626	0.693	7.645	0.628
COD (tons)	20.824	8.181	12.716	3.379	7.463	1.932
TN (tons)	2.215	0.398	1.747	0.433	1.309	0.397
Average electricity consumption (kWh/m^3)	0.2897		0.2961		0.2810