This standard was formulated to implement the "Marine Environmental Protection Law of the People's Republic of China" and to prevent the pollution of the marine environment by oily sewage from offshore oil development industries. This standard applies to all enterprises, institutions, operators (operators) and individuals engaged in offshore oil development in all sea areas under the jurisdiction of the People's Republic of China. GB 4914-1985 Discharge Standard for Oily Wastewater from Offshore Oil Development Industry GB4914-1985 Standard download and decompression password: www.bzxz.net

National Standards of the People's Republic of China
Offshore Petroleum Development Industry
Oil-bearing waste water discharge standards
|GB4914-85
This standard was formulated to implement the "Marine Environmental Protection Law of the People's Republic of China" and to prevent the pollution of the marine environment by oily sewage from offshore oil development industries.
This standard applies to all enterprises, institutions, operators (operators) and individuals engaged in offshore oil development in all sea areas under the jurisdiction of the People's Republic of China.
1 standard classification
The oily wastewater in the offshore oil development industry refers to the oil production process wastewater discharged from the fixed sewage outlet after treatment on the oil production platform. The oily wastewater discharge standards for the offshore oil development industry are divided into two levels. Level: Applicable to Liaodong Bay, Bohai Bay, Laizhou Bay, Beibu Gulf, nationally designated marine special protection areas, coastal scenic areas and other sea areas within 10 nautical miles from the shore,
Level 2: Applicable to Level 1 Sea areas outside the scope of application of the standard. 2 Standard value
The maximum allowable concentration of the discharge standard for oily wastewater from the offshore oil development industry should comply with the provisions of Table 1. Table 1 Maximum allowable concentration items of oily sewage discharge standards
Petroleum type
Petroleum type
Level
Class
Level 1
Level 2
Oil production process sewage should be injected back into the formation to reduce the amount of sewage discharge. Monthly average bzxZ.net
30
50
mg/L
sub-permissible value
45
75
at tide The oily wastewater from the offshore oil development industry in the interzone shall be implemented in accordance with GB3550-83 "Water Pollutant Discharge Standard for the Petroleum Development Industry",
3 Implementation and Monitoring of the Standard
3.1 From the date of implementation of this standard , the oil production platform that starts construction shall implement this standard immediately. Existing oil production platforms will implement the secondary standard values ??from the date of implementation of this standard, and will implement the provisions of this standard one year later. 3.2 Monitoring sampling points should be set up at the process sewage discharge outlet of the Shi oil production platform, and the offshore oil enterprise environmental monitoring agency shall be responsible for daily monitoring.
3.3 The monitoring and analysis methods of this standard are implemented in accordance with the "Analysis Methods for Oily Wastewater from the Offshore Petroleum Development Industry". Released by the National Environmental Protection Administration on January 18, 1985 and implemented on August 01, 1985
Additional notes:
GB4914-85
This standard was proposed by the Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China. This standard is drafted by the "Oily Wastewater Discharge Standard for Offshore Petroleum Development Industry" compilation team. The State Oceanic Administration and the Ministry of Petroleum Industry are responsible for the interpretation of this standard.
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