Zero Waste Logo The Zero Wate Network the University of Texas at Arlington Center for Environmental Excellence Environmental Training Institute Logo  

Join Us on:

Social Network Nav Bar

Lean and P2 Workshops

06/07/16 - 06/09/16




Environmental Management Systems Workshops

South Houston, TX
01/12/16 - 01/15/16

Austin, TX
03/08/16 - 03/11/16

Arlington, TX
05/10/16 - 05/13/16

San Antonio, TX
08/02/16 - 08/05/16

Oklahoma City, Ok
09/27/16 - 09/30/16



Case Study Database

           Add Story    |    Search Case Studies    |   


Shell West Hollow Technology Center

Year Submitted: 2003

Process: UV disinfection

Industry: Petroleum Refining

Wastes Reduced: Wastewater

Substance: Chlorine

Equipment: UV Radiation

Location: Houston TX

No. of employees: 1600

Contact: Marty Pierce

Phone: (281) 544-7254


Shell Development used an ultraviolet system to disinfect effluent before discharging into the bayou.

P2 Application:

UV irradiation (245 NM) disinfects by direct cleavage of bonds and subsequent denaturization of metabolic molecules within the cells and viruses. Lamps are arranged so all effluent passes within ½ inch of any lamp to ensure adequate UV exposure. The system was commissioned March 1992, as the last step in treating effluent before discharging it into the ditch. The system that replaced the original chlorine disinfection system met the 1992 permit requirements including the no more than 0.1 mg/L of residual chlorine in the effluent stream.

Environmental Benefits:

Elimination of one ton chlorine gas cylinders which posed a safety issue as well as environmental hazard. The cylinders were changed out approximately every three months. This was used to treat 200 gal/min of effluent. No aquatic toxic effects are associated with using the UV system.

Details of Reductions

Additional Information :

This system received acceptance by the operators compared to chlorination/dechlorination process. This system offers over $1,000 per month savings.

Source: TCEQ

SHEP Shield
Health and

ERP Shield

ESP Shield

EMP Shield

Attend a workshop and
earn credits toward a
Professional Certification



The Zero Waste Network is one of eight Pollution Prevention Resource Exchange P2RxCenters , serving as a national network of regional information centers: NEWMOA (Northeast), WRRC (Southeast), GLRPPR (Great Lakes), ZeroWasteNet (Southwest), P2RIC (Plains), Peaks to Prairies (Mountain), WSPPN (Pacific Southwest), PPRC (Northwest). We are a proud member of the National Pollution Prevention Roundtable.

National P2 Roundtable Logo
michael kors online outlet michael kors factory outlet online store michael kors outlet canada michael kors outlet online michael kors factory outlet fake michael kors bags cheap mk bags michael kors handbags clearance wholesale jordans jordans outlet cheap jordans china cheap authentic jordans cheap real jordans cheap jordans free shipping cheap jordans online discount jordans cheap jordans from china cheap air jordans louboutin pas cher louboutin soldes louboutin pas cher louboutin soldes air max pas cher air max femme pas cher air max pas cher roshe run pas cher air max one pas cher air max femme pas cher sac michael kors pas cher sac michael kors pas cher sac longchamp pas cher longchamp soldes sac longchamp pas cher longchamp pas cher moncler outlet moncler outlet moncler outlet