Effect of Various Sizes of Mesh on Dewatering Behavior of Effluent Slurry
To suit to the management practices of the farmers of this region, an experiment was conducted to dewater effluent slurry from biogas plants by filtering its water content in a filtration chamber/unit or pit under lab and field conditions. Under lab conditions, the mesh having a hole size of 3 mm × 4 mm was found to be the best filtering net among all other meshes studied. Dewatering in this mesh was studied in the filtration unit of 0.6 m3 capacity in the field and compared to a mesh of size 3.2 mm × 5.67 mm. It is found that the performance of 3 mm × 4 mm mesh was slightly better to dewater slurry (6%) and for lesser TS content of filtered water. On an average, 27-29% dewatering of slurry can be obtained from an effluent slurry having a TS content of 93-94% and 13-14%. TS contents of the dewatered slurry can be obtained with filtration unit that is suitable for transportation to the farms or to storage.
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Document Type: Research Article
Publication date: October 1, 2001