11 pulp paper producing and handling equipment, namely evaporators; furnaces; and systems comprising waste liquid collection equipment and fluid handling equipment for minimizing undesired effluent discharges from paper mills consisting of some or all of the following components; water treatment plants, gravity clarifiers, flotation clarifiers, oxidation and aerations lagoons, activated sludge systems, screens, strainers, presses, filters, sumps, pumps, tanks, piping, valves and instrumentation