The factors affecting the rainwater recycling process in the rainwater collection and utilization system are: the amount of rainwater that can be recycled, the quality of the original rainwater, and the water quality requirements of the rainwater recycling site. The three are interrelated and affect the cost of rainwater recycling water treatment.
Rainwater has poor biodegradability, so it is recommended to use physical and chemical treatments that are easy to adapt to seasonal intermittent operation. Rainwater treatment is to collect rainwater into a reservoir, and then conduct physical and chemical treatments to remove pollutants in the rainwater. Many processes in water supply and sewage treatment can be applied to rainwater treatment. Generally, rainwater with good water quality is selected for collection and reuse, and the treatment process is simple, using a combination of filtration, sedimentation, and disinfection.
Fiber ball filter material is a ball made of fiber filaments with a diameter of 10-50 μm. The porosity of the filter layer is about 95%, and the specific surface area exceeds 104m2/m3. The voids of traditional quartz sand filter material are only about 40%, and the specific surface area is about 300m2/m3. Due to the large pores and small resistance of fiber ball filter material, the filtration speed can be as high as 30-80m/h, and the water quality of the effluent is good. For traditional sand filtration, due to the large resistance of the filter layer, the filtration speed is about 8m/h. If the flow rate is increased, it is easy to cause penetration.
Fiber balls have high filtration efficiency and are of great application value in rainwater treatment, especially in deep treatment. In order to achieve satisfactory treatment results, our company can provide filter balls of different specifications according to the water quality (suspended matter content and particle size) of the raw water source, so that the treated water quality can achieve better results.