Utilization of different plant species for dewatering of sewage sludge.

Bench-scale and pilot-scale experiments were conducted in an outdoor environment to study the ability of some plant species in dewatering of sewage sludge collected from biological activated sludge treatment. In the bench-scale experiments, four types of plants were tested, including water hyacinth (Eichhornia crassipes), common reed (Phragmites austuralis), Samar (Cyperus alopecuroides), and El Nesila (Panicum echinochloa). Sludge dewatering in the plant reactors was compared with that in the control reactors (no plants).