Historical Examples. 1  The flashes of lightning were incessant, and nearly blinded me. 2  The footsteps were incessant, and the hurry of them became more and more rapid. 3  I have not had a moment to spare from incessant toil since the 8th. 4  I don't mean that he tells stories; but it's just his incessant grumbling.
Primary and secondary treatments remove about 85% to 95% of pollutants from the wastewater before the treated wastewater is disinfected and discharged into local waterways. Sludge, the byproduct of the treatment process, is digested for stabilization and is then dewatered for easier handling.
The latter is called water reclamation and implies avoidance of disposal by use of treated wastewater effluent for various purposes. Treatment means removing impurities from water being treated; and some methods of treatment are applicable to both water and wastewater. The physical infrastructure used for wastewater treatment is called a wastewater treatment plant (WWTP).