Method for treating liquids
View Patent ↗A system for treating wastewater includes a basin to contain wastewater, an aerator provided in the basin to mix the wastewater, and a cover system to cover a surface of the wastewater contained in the basin. The cover system includes a plurality of hollow bodies disposed on the surface of the wastewater. Each hollow body is adapted to float on the wastewater's surface, and has a contiguous outer surface and a sufficient mass so that 30 to 70 percent of the hollow body's outer surface is exposed to atmosphere during use. A method of treating wastewater is further disclosed.
1. A method of treating wastewater comprising:
depositing wastewater within a wastewater treatment basin;
treating the wastewater with a biologically active material; and
covering a surface of the wastewater with a plurality of hollow bodies disposed on the surface of the wastewater, each hollow body being adapted to float on the wastewater's surface, each hollow body having a contiguous outer surface and a mass greater than 200 grams so that 30 to 70 percent of the hollow body's outer surface is exposed to atmosphere during use.
2. The method of claim 1 , further comprising mixing the wastewater with an apparatus disposed within the basin.
3. A method of treating wastewater comprising:
depositing wastewater within a wastewater treatment basin;
treating the wastewater with a biologically active material;
covering a surface of the wastewater with a plurality of hollow bodies disposed on the surface of the wastewater, each hollow body being adapted to float on the wastewater's surface and having a mass greater than 200 grams; and
mixing the wastewater with an apparatus disposed within the basin.
4. The method of claim 3 , wherein each hollow body has a wall with a thickness between 1 mm and 15 mm.
5. The method of claim 3 , wherein each hollow body is spherical in shape.
6. The method of claim 5 , wherein each hollow body has a diameter of about 100 mm.
7. The method of claim 3 , wherein each hollow body has a mass between 200 grams and 300 grams.
8. The method of claim 3 , wherein each hollow body has a mass between 200 grams and 240 grams.
9. The method of claim 3 , wherein each hollow body is spherical in shape and fabricated from polyethylene, each hollow body having a mass between 200 and 300 grams.
10. The method of claim 9 , wherein each hollow body has a density of 0.948 gm/cm 3 .
11. The method of claim 3 , wherein the apparatus comprises a mixer provided in the basin to mix the wastewater.
12. The method of claim 3 , wherein the apparatus comprises an aerator provided in the basin to mix the wastewater.
13. The method of claim 3 , wherein the hollow body has a diameter between 25 mm and 150 mm.
14. The method of claim 3 , wherein each hollow body has a contiguous outer surface and a sufficient mass so that 30 to 70 percent of the hollow body's outer surface is exposed to atmosphere during use.