PetroChina Corporation became a publicly-listed company on the New York Stock Exchange. This required considerable reorganization within the company to streamline its operations and staff. Tremendous corporate operations modernization had to occur. These changes as well as evolving environmental consciousness placed a new emphasis on good environmental performance.
The PRC Environmental Protection Administration (China-EPA) mandated that Online Automatic Monitoring System (OAMS) technology be installed at all refineries and oil field sites in China to monitor effluent wastewater for concentrations of oil and grease and chemical oxygen demand. Likewise, petrochemical facilities are required to monitor their effluent wastewater for concentrations of oil and grease, chemical oxygen demand and ammonia nitrogen (N-NH4).
The OAMS study included:
- Facility evaluations
- System designs
- Pilot study
- Feasibility study
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The outcome of the study was the identification of appropriate OAMS technology for use at PetroChina and other industrial facilities. Availability, reliability, ease of maintenance, cost and integration into existing monitoring and control systems (e.g., supervisory control and data acquisition systems [SCADA] systems) were variables evaluated in the study.
The focus of the study was at the Jinxi Refinery Branch Company in Liaoning Province. The Jinxi Refinery monitors chemical oxygen demand at the facility's wastewater discharge.The study included the additional monitoring of oil and grease and N-NH4. The N-NH4 monitoring was performed in anticipation of future China-EPA regulatory initiatives.
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