Sewage energy storage device

Can solar and wind energy improve the resource utilization of sewage?

This study aims for the resource utilization of sewage and constructs a rural domestic sewage treatment system driven by solar and wind energy. It develops nitrogen and phosphorus form control techniques with different volume ratios, saving fossil fuels and reducing environmental and economic burdens.

How much energy does a sewage treatment system use?

Wind power was used as a supplementary energy source, with maximum and average daily power generation of 0.18 kW·h and 0.016 ± 0.03 kW·h, respectively. The average daily electricity consumption and average energy utilization rate of the domestic sewage treatment system were 1.29 ± 0.39 kW·h and 63.8 ± 11.18 %, respectively.

Can solar and wind power supply the sewage treatment system?

Overall, whether in summer or autumn, the solar and wind power generation system can meet the daily electricity demand of the sewage treatment system, ensuring its continuous and stable operation.

What is sewage-water treatment?

Sewage-water treatment comprehends primary, secondary, and tertiary steps to produce reusable water after removing sewage contaminants. However, a sewage-water treatment plant is typically a power and energy consumer and produces high volumes of sewage sludge mainly generated in the primary and secondary steps.

Can sewage sludge be converted into biogas after AD?

Silvestre et al. (2015) [ 90] analyzed SWTPs from an energy point of view and concluded that 67% of the initial energy content in the raw sewage water is transferred to sewage sludge. Then, at least 34% of sewage-water energy content can be recovered into biogas after AD.

Does sewage treatment system generate electricity at night?

The PV system did not generate electricity at night, while the sewage treatment device operation continuously, resulting in the battery voltage decreasing at night, generally from 19:00, to below 26 V. At low power generation, the battery voltage decreased to below 25 V at night owing to the continuous operation under load.