The sewage treatment plant has a large area of water treatment tank, and the installation of solar photovoltaic panels on it has a unique space advantage, which can play an intensive role in land use and achieve the effect of comprehensive utilization of land. The biomass gas carbon cogeneration process can output electric energy and couple it with photovoltaic power generation, which can improve power generation capacity and achieve energy conservation and carbon reduction. At the same time, a new type of lithium-ion/molten salt energy storage power generation device can be used to form a power generation-energy storage-sewage treatment plant to solve the problem of unstable power supply.

1. Technical scheme

2. Benefit analysis

With its significant advantages such as clean, efficient, safe and renewable, solar photovoltaic power generation has become one of the environmentally friendly alternative energy sources, and vigorously developing photovoltaic power generation can reduce the pollution caused by the combustion of mineral energy to the environment. The sewage treatment plant mainly removes pollutants such as COD and ammonia nitrogen, and electricity consumption accounts for a large proportion of direct production costs.

As the scale of the wastewater treatment plant increases, the area that can be laid with photovoltaic panels will also increase, and the photovoltaic power generation system will recover more solar energy, and the carbon neutrality rate will be higher. The use of energy storage technology is of great significance to improve the performance of solar photovoltaic power generation, biomass gas and carbon cogeneration and reduce energy consumption. In addition to the use of solar energy and biomass energy, new energy sources such as wind energy and sewage thermal energy can also be introduced, so as to achieve a variety of energy supplements. Biomass polygeneration coupled with photovoltaic power generation and energy storage can not only save standard coal, but also reduce carbon dioxide emissions. A hybrid system based on photovoltaic energy, biomass gasifier and power grid, combined with biogas combustion, can also be used as a complementary solution to wastewater treatment plants, which can increase economic and environmental benefits.