General Electric Company

Other

Bl Technologies, Inc.

Abdul Rafi Khwaja

David M Polizzotti

Matthew Alan Petersen

Vasile Bogdan Neculaes

Stephen Robert Vasconcellos

Anthony Yu-Chung Ku

Kevin Paul McEvoy

David Olson

Vinod Kumar Rai

Phillip Goebel

Baraka Kawawa

Ashok Shyadligeri

Narain Madhavan

Brian Christopher Moore

Carl Vess

Kevin Paul Mcevoy

In a process and apparatus for treating produced water, the produced water flows through a series of treatment units. A portion of the produced water may by-pass one or more of the treatment units but the by-pass portion may be such that the treated water is still acceptable, for example for discharge or reuse. Concentrations of oil and grease, organic carbon, silica, pH or related parameters in the produced water may be monitored and used to control the process or apparatus. Control of the process may involve one or more of altering a by-pass portion, altering the addition of chemicals, and altering the operation of a unit process. The process may be controlled to respond to upset conditions, or such that the concentration of one or more limiting contaminants is near, but not over, a specified maximum for re-use or discharge.

Monitoring and control of unit operations for generating steam from produced water

A system for treating produced water, for example from a SAGD bitumen production operation, has a treatment unit using chemical oxidation (CO) or electromagnetic treatment (ET) to destroy or degrade organics in the produced water. The treatment module may use CO or ET in combination with biological treatment or sorption processes or both. When the treatment module is used upstream of a steam generator, it reduces fouling in the steam generator and in any blowdown water treatment device. A brine concentrator or a crystallizer may be used to treat the blowdown water. The treatment module may be used in combination with a nanofiltration (NF) or reverse osmosis (RO) membrane filter. Optionally, the produced water may be treated with an ET process such as microwaves directly upstream of a steam generator or upstream of a concentrator or crystallizer in a blowdown water stream.

Chemical oxidation or electromagnetic treatment in SAGD operations

A spiral wound module is suitable for use with high temperature water that is also very alkaline or has a high pH, for example SAGD produced water. The module uses a polyamide-based membrane with a polysulfone or polyethersulfone backing material. For other components, the module uses primarily one or more of, EPDM; polyamide; polyphenylene oxide; polyphenylene sulfide; polysulfone; polyethersulfone; polysulfonamide; polyvinylidene fluoride; mylar; fiberglass; and, epoxy. Polyester is not used. Polypropylene is not used for the feed spacer. For example, a module may use a PVDF feed spacer, a nylon permeate spacer and a polysulfone center tube. The center tube may be provided with 4 rows of 0.063&#x2033; diameter holes and be rolled under high tension.

Spiral wound membrane element and treatment of SAGD produced water or other high temperature alkaline fluids

Methods of deoiling oily water such as SAGD and frac produce water. The oily water is treated with a natural coagulant selected from tannins and chitosan. A cationic and/or anionic flocculant may also be added to the treated oily water. The thus treated oily water may be subjected to conventional mechanical oil separation techniques such as hydrocyclonic separation, dissolved air flotation, entrapped air flotation, induced gas flotation, gravity filters, reverse osmosis filters, API, or Voraxial&#xae; bulk separators and the like.

Deoiling of SAGD produce water

Composition and method of use for tannin based environmentally benign polymeric coagulants are disclosed. Tannin based coagulants are copolymers of naturally occurring tannins and a cationic monomer. One embodiment of the present invention provides for a composition, of a tannin based polymeric coagulant which is comprised of N,N-(dimethylaminoethyl) methacrylate (MADAME) polymerized using t-butylhydroperoxide and sodium metabisulfite. The resulting polyMADAME is converted to hydrochloride and then blended/reacted in an aqueous medium with tannin to obtain a homogenous poly(MADAME)-tannin composition. The method of use comprises adding an amount of the composition effective for the purpose of clarifying oily wastewater from food and beverage, steel, automotive, transportation, refinery, pharmaceutical, metals, paper and pulp, chemical processing and hydrocarbon processing industries.

Tannin based polymeric coagulants composition and method of use

A method for recovering tallow from meat processing wastewater includes adding a coagulant composition to the wastewater to agglomerate suspended fat, oil and grease particles in the wastewater, separating solid waste materials from the wastewater and isolating tallow from the solid waste materials. The coagulant composition includes tannin.

Methods for recovering tallow from wastewater

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Upper Gwynedd Township, PA, United States of America

Abdul Rafi Khwaja