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1. (WO2018223135) COMMERCIAL LAUNDRY WASTE WATER TREATMENT SYSTEM

Pub. No.:    WO/2018/223135    International Application No.:    PCT/US2018/035876
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Tue Jun 05 01:59:59 CEST 2018
IPC: B01D 61/58
B01D 63/02
B01D 63/04
B01D 63/06
B01D 29/00
C02F 9/00
D06F 39/00
D06F 39/08
D06F 39/10
Applicants: WATER RECOVERY SYSTEMS, LLC
Inventors: POY, Russell H.
WOLFF, Kyle Anthony
MAK, Sharon Monica
Title: COMMERCIAL LAUNDRY WASTE WATER TREATMENT SYSTEM
Abstract:
The present invention provides a method of treating a commercial or industrial laundry wastewater stream. The method and apparatus treats a commercial laundry waste stream from a commercial washing machine or machines wherein the waste includes total suspended solids, chemical oxygen demand, biological oxygen demand, turbidity, and bacteria. The waste stream is transmitted to a first treatment unit that has a membrane filter that filters particles of between about 6 and 40 nanometers. At the first treatment unit, the waste stream is separated into a permeate stream and a retentate component. The retentate component is transmitted to a second treatment unit that filters particles of between about 3 and 10 nanometers. The permeate stream is then transmitted to a permeate holding vessel after treatment in the second treatment unit. The retentate component is placed in a mixing vessel where it is mixed with a polymer to form a solid waste.