Water Solutions for Oil and Gas

Industrial wastewater treatment
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Siemens Successfully Commissions Zimpro® Wet Air Oxidation Unit for Olefins Plant

Siemens Water Solutions successfully installed and started up a Zimpro® wet air oxidation (WAO) system at a global petrochemical company’s olefins plant in the Southern U.S. The Zimpro® WAO system will treat spent caustic generated in the production of ethylene by destroying odorous and high chemical oxygen demand (COD) pollutants. The system also generates an effluent that can be safely neutralized and sent to a biological treatment plant, where it is further treated for discharge.

Industrial Water and Wastewater Treatment Solutions

We can meet your water treatment requirements

Water is a resource and a byproduct of all that we do – a critical element in offshore, onshore, upstream and downstream activities. The treatment and management of this water is becoming increasingly complex as you work to keep pace with global standards, energy demand and environmental regulations. Rely on us to be your water solutions partner. Together, we’ll make real what matters most.

We understand your challenges. And we have the experience to help.

Our core business is processing and treating water and wastewater for companies like yours. Our oil and gas business includes water treatment technologies, total water treatment solutions and water treatment services. We address your specific needs, from simple products to complex, fully integrated solutions, from beginning to end.

Ethylene and Chemical Plants

World-class spent caustic treatment solutions

We’re a world-leader in the treatment of ethylene spent caustic. Our hydrothermal treatment solutions, including Zimpro® wet air oxidation (WAO), electro-oxidation (ZEO) and catalytic gasification (ZimCat); and wet air regeneration are backed by decades of process and application knowledge.
Water Solutions Anniversary

Celebrating 65 Years

On January 5, 2019, Siemens Water Solutions celebrated the 65th anniversary of the granting of the original wet air oxidation patent to F.J. Zimmermann...the process that started it all!

Next Generation Spent Caustic Treatment

Learn more about Zimpro® WAO followed by advanced biological polishing treatment and the advantages over alternative technologies, expected effluent quality, and use of this technology to increase fresh water recovery.

Spent Caustic from Ethylene Production 

Spent caustic from ethylene production is characterized as a toxic and odorous wastewater, primarily due to its high sulfide content. Consequently, treatment can be a challenge. For more than 25 years, Siemens has addressed this challenge using Zimpro® wet air oxidation (WAO) technology as pretreatment for biological polishing. Siemens has developed a method for directly treating spent caustic to avoid contamination of the remainder of the wastewater with its high dissolved solids content. 

Downstream Refining and Petrochemicals

From discharge to reuse, we have your solution

Let us help you find the right treatment solution for wastewater discharge/reuse and process water treatment, in addition to spent caustic treatment.

Biological treatment solutions

If you need biolog cuments_ws/PACT_MBR_Sys ical treatment of wastewater for recycle/reuse, or to reduce your operating costs, meet strict discharge and toxicity effluent requirements, minimize the effects of frequent shock loadings, eliminate non-biodegradable compounds, enhance nutrient removal processes, solve air emissions problems or increase your capacity without increasing your footprint, our PACT® family of systems and solutions are designed to meet your toughest challenges.


Hydrothermal treatment solutions

Our hydrothermal treatment solutions, including Zimpro® wet air oxidation (WAO), electro-oxidation (ZEO) and catalytic gasification (ZimCat); and wet air regeneration (WAR) are backed by decades of process and application knowledge.

Oil/water separation

Our oil/water separation experience is also extensive. For primary separation, we offer API separators, corrugated plate separators and solid/liquid or liquid/liquid hydrocyclones. For secondary separation, we offer both dissolved and induced air/gas flotation; and for tertiary treatment, our Monosep™ walnut shell filter and PerforMedia™ oil removal media are specially-suited to meet your needs.

Upstream Production

Solutions for upstream operations

Contact us today for offshore and onshore produced water treatment for discharge or reuse. We offer decades of produced water treatment experience applying our corrugated plate separators and solid/liquid or liquid/liquid hydrocyclones for primary treatment; dissolved air/gas flotation with our Brise™ pump and Spinsep™, Veirsep™ and Combosep™ systems for secondary treatment; and tertiary treatment using our Monosep™ walnut shell filter and PerforMedia™ oil removal media.
Articles and Case Studies

Articles and Case Studies

Press Release

Press Releases

Life Cycle Management

Aftermarket parts and service – and more

With services aimed at the entire life cycle of your project – from early, front-end engineering and EPC functions to services during plant operations – Siemens Water Solutions can improve your plant’s performance and increase your uptime. 

Find out how

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