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SYSTEM AND METHOD FOR TREATING WASTE WATER

IP.com Disclosure Number: IPCOM000192582D
Publication Date: 2010-Jan-25
Document File: 9 page(s) / 40K

Publishing Venue

The IP.com Prior Art Database

Abstract

A system and method for treating waste water is disclosed. The disclosed method utilizes a reverse osmosis (RO) device with low fouling membranes in order to purify the waste water. Further, effluent from the RO device is reused and RO reject is sent to a super-capacitive desalination (SCD) device in order to remove salt. Furthermore, liquid portion of the desalinized effluent is sent back to a membrane bio-reactor system and solid portion of the desalinized effluent is generated as a solid waste for disposal. In one embodiment, the disclosed system includes addition of a RO or nano-filtration membrane system of stronger anti-fouling capability before the membrane bio-reactor (MBR) to pre-concentrate the waste water before entering the MBR. The disclosed system and method provides a highly efficient, cost effective and zero liquid discharge waste water treatment system.

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RP13297

BRIEF ABSTRACT

    A system and method for treating waste water is disclosed. The disclosed method utilizes a reverse osmosis (RO) device with low fouling membranes in order to purify the waste water. Further, effluent from the RO device is reused and RO reject is sent to a super-capacitive desalination (SCD) device in order to remove salt. Furthermore, liquid portion of the desalinized effluent is sent back to a membrane bio-reactor system and solid portion of the desalinized effluent is generated as a solid waste for disposal. In one embodiment, the disclosed system includes addition of a RO or nano-filtration membrane system of stronger anti-fouling capability before the membrane bio-reactor (MBR) to pre-concentrate the waste water before entering the MBR. The disclosed system and method provides a highly efficient, cost effective and zero liquid discharge waste water treatment system.

KEYWORDS

    Waste water, MBR, membrane bio-reactor, RO, reverse osmosis, liquid discharge, treatment, fouling, SCD, super-capacitive desalination, solid waste, cost, efficiency, liquid leakage

DETAILED DESCRIPTION

    Water is a valuable resource. Many industrial operations, such as oil and natural gas production operations, agriculture operations, and/or the like

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SYSTEM AND METHOD FOR TREATING WASTE WATER

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RP13297

generate large quantities of waste water. The waste water is typically contaminated with significant concentrations of chemicals and substances, such as chemical oxygen demand (COD), total dissolved solids (TDS), ammonia, and/or the like. So, the waste water needs to be treated before it can be reused or discharged into the environment.

    Further, one or more waste water treatment systems and methods have been developed to treat the waste water. It is always the object of such systems to treat for the contaminants, so as to minimize the quantity of such undesirables output by the system. There are a large number of concerns during waste water treatment. The contaminants extracted from the waste water during treatment should preferably be in a form that can be easily disposed off. Further, the volume of the waste should be minimized because of both the limited space available for disposal and high cost of the proper disposal.

    As a method for treating waste water, a biological treatment method, a combustion treatment method, a wet oxidization treatment method, a reverse osmosis method, a DAF method, and/or the like have been conventionally used. However, due to the very wide range of contaminant species as well as the different quality of the waste water from different sources, efforts to create a cost effective and high-quality treatment system that can treat or recycle the spectrum of possible waste water streams have little success. For example, while reverse osmosis (RO) is effective in treating many of the...