Apparatus of reusing final effluent from water treatment plant using submerged hollow fiber membrane

摘要

PURPOSE: An apparatus for reusing the final effluent of a water treatment plant using a submerged hollow fiber membrane is provided to reuse the final effluent of a water treatment plant, thereby increasing a recovery rate of the water treatment plant. CONSTITUTION: An apparatus for reusing the final effluent of a water treatment plant comprises: a raw water storage tank (1) which receives and stores the final sludge thickener supernatant water of a water treatment plant as raw water; a total organic carbon (TOC) measuring device (2) which is installed at the raw water storage tank and measures a TOC concentration of the final sludge thickener supernatant water of the water treatment plant; a dip coating film tub (4) which receives the raw water from the raw water storage tank; a submerged membrane (7) installed inside the dip coating film tub; a diffuser which is installed at the lower part of the submerged membrane and positioned inside the dip coating film tub; a water treatment tank (12) which receives processing water filtered through the submerged membrane; and a regression pipe which returns the enriched water of the dip coating film tub to the raw water storage tank. [Reference numerals] (1) Membrane filtration flux flow rate controlling tank; (10) Suction pump; (11,15,26) Flowmeter; (12) Membrane filtration processing tank; (17) Oil and fat washing tank; (18) Volumetric pump; (24) Waste water storage tank; (25) Automatic control valve of flow rate; (3,13,27) Pressurizing pump; (4) Dip coating film tub; (5) Cover; (6) Ventilating opening; (9) Manometer; (AA) Supernatant of concentration tank (final discharging water); (BB) Control tank (discharging sludge); (CC) Membrane filtration process water (recycle or discharge)