To address the issue of the serious environmental impact caused by wastewater ponds, the technology for covering these ponds was developed. The question then arises: what material should be used for the cover shells? Let's delve further. With years of experience and practical considerations, equipment manufacturers have produced wastewater pond covering and odor control technology. This involves placing a canopy over the pond and sealing it to prevent the escape of harmful gases, thereby improving air quality and preserving the environment.

The raw material for the lid of the sewage pool typically consists of:

The internal carbon steel frame is complemented by an external layer of polycarbonate panels. This method, currently more affordable, is still in use for some small-scale sewage ponds, typically for everyday sewage treatment. However, it is susceptible to corrosion from corrosive gases. Once the sewage contains corrosive substances or in cases of high sewage volume, the carbon steel frame and polycarbonate panels are prone to corrosion or rust, thereby reducing their lifespan and necessitating a second construction phase.

We have chosen glass-fiber reinforced plastic (GFRP) to cover the entire sewage pool. GFRP is a stable non-metallic material that can withstand the corrosion from strong acids, alkalis, and water scale, and requires minimal maintenance. Moreover, this design eliminates the need for supporting structures. However, its limitation is that it is suitable only for small-span sewage pools or for laying walkways above the pool, where GFRP panels are used layer by layer.