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Spiral wound filtration assembly including integral bioreactor

a technology of spiral wound and membrane assembly, applied in the direction of membranes, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problem of deterioration of spiral wound membrane assembly performan

Active Publication Date: 2017-08-10
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This configuration effectively reduces biofouling in the membrane modules by consuming nutrients within the bioreactor, maintaining separation efficiency while conserving space and eliminating the need for external bioreactor pressurization.

Problems solved by technology

The performance of spiral wound membrane assemblies often deteriorate over time due to fouling.

Method used

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  • Spiral wound filtration assembly including integral bioreactor
  • Spiral wound filtration assembly including integral bioreactor
  • Spiral wound filtration assembly including integral bioreactor

Examples

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Embodiment Construction

[0013]The invention includes a spiral wound filtration assembly including a pressure vessel including a feed port, concentrate port, and at least one permeate port. A bioreactor and at least one but preferably a plurality of spiral wound membrane modules are serially arranged within the pressure vessel such that feed liquid flows successively through both the bioreactor and spiral wound membrane module(s). The bioreactor has a cylindrical outer periphery extending along an axis from a first end to a second end, with an inlet located near the first end and an outlet located near the second end. In one preferred embodiment, the bioreactor has a spiral wound configuration comprising: a flat sheet having two opposing bio-growth surfaces and a feed spacer spirally wound about an axis; wherein the feed spacer defines flow channels extending along the bio-growth surfaces of the flat sheet from the inlet to the outlet of the bioreactor. Feed liquid entering the vessel's feed port flows from...

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Abstract

A spiral wound filtration assembly including:i) a pressure vessel comprising a feed port, concentrate port and permeate port;ii) at least one spiral wound membrane module comprising at least one membrane envelop wound around a permeate tube which forms a permeate pathway to the permeate port; andiii) a bioreactor having a cylindrical outer periphery extending along an axis (Y) from a first end to a second end, an inlet located near the first end, and an outlet located near the second end;wherein the spiral wound membrane module and bioreactor are serially arranged within the pressure vessel.

Description

FIELD[0001]The invention is directed toward spiral wound assemblies including one or more spiral wound membrane modules connected serially with an integral bioreactor within a common vessel.INTRODUCTION[0002]Spiral wound filtration assemblies are used in a wide variety of fluid separations. In a conventional embodiment, one or more spiral wound membrane modules (“elements”) are serially arranged and interconnected within a pressure vessel. During operation pressurized feed fluid is introduced into the vessel, successively passes through the individual modules, and exits the vessel in at least two streams: concentrate and permeate. The performance of spiral wound membrane assemblies often deteriorate over time due to fouling. Fouling involves the formation of debris on various surfaces within the module. More common types of fouling include: scaling, colloidal or particle deposition, organic fouling (adsorption of organic compounds) and biofouling (growth of a biofilm on various surf...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C02F3/10C02F3/12B01D63/12
CPCC02F3/109B01D63/12C02F3/1268B01D2311/04B01D2313/143B01D2317/02B01D2311/2688B01D61/04Y02W10/10B01D63/101
Inventor JONS, STEVEN D.JOHNSON, JON E.
Owner DOW GLOBAL TECH LLC