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Treatment Plant for Oil and Gas Industry Produced Water, Case Study Romania

  • Ralina Mariuca DusaEmail author
Living reference work entry

Abstract

“Produced water” is a term used in the oil and gas industry for water which comes out of the reservoirs such as condensed water or injected water or water which has been in the reservoirs before. It is the largest waste stream generated in the oil and gas industry, and consists of a mixture of different compounds, both organic and inorganic.

The object of this project was to reduce the pollutants contained in the produced water, in order to discharge the treated water into the river. The main issue with regard to the treatment of this produced water was the elimination of nondegradable COD. For this reason, adsorption using activated carbon technology was implemented and has been shown to be successful. The treatment plant consists of three stages: physical-chemical stage, biological stage, and adsorption on activated carbon. The plant effectively decreased the COD in the produced water by between 92% and 95%.

Within the context of the aforementioned, this chapter presents a case study describing the design of a produced water treatment plant built by WABAG in Romania.

Abbreviations

ADR

Air dissolving reactor

API

American Petroleum Institute

AST

Activated sludge tank

BOD5

Biological oxygen demand after 5 days

COD

Chemical oxygen demand

DAF

Dissolved air flotation

DMF

Dual media filter

DS

Dry solids

EPC

Engineering, procurement, construction

MLSS

Mixed liquor suspended solids

PWTP

Produced water treatment plant

RAS

Return activated sludge

SAS

Surplus activated sludge

SCADA

Supervisory control and data acquisition

THC

Total hydrocarbons

TKN

Total kjeldahl nitrogen

TN

Total nitrogen

TOC

Total organic carbon

TP

Total phosphorus

TSS

Total suspended solids

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.WABAG Water Services SRLBucharestRomania

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