MEPC 159(55) refers to the Revised guidelines on implementation of effluent standards and performance tests for sewage treatment plants, issued in 2006. These guidelines are crucial for ships equipped with sewage treatment plants, ensuring compliance with environmental regulations regarding sewage discharge.
Key Aspects of MEPC 159(55):
The guidelines cover the following main areas:
- Effluent Standards: Defining the permissible levels of pollutants in treated sewage before it can be discharged into the sea.
- Performance Tests: Specifying the procedures and requirements for testing the performance of sewage treatment plants to ensure they meet the required effluent standards.
- Implementation: Providing guidance on how to implement the effluent standards and performance tests on ships.
Relation to MEPC 227(64)
It's important to note that MEPC.159(55) was later superseded by MEPC.227(64) 2012 guidelines on implementation of effluent standards and performance tests for sewage treatment plants. While MEPC 159(55) is still relevant for older systems or in specific contexts, MEPC 227(64) represents the most current standards.
Example of Effluent Standards (Illustrative)
While the specific effluent standards are detailed in the guidelines themselves, they typically address parameters like:
| Parameter | Limit (Example - specific value depends on regulation) | Unit |
|---|---|---|
| Biochemical Oxygen Demand (BOD5) | 25 | mg/L |
| Suspended Solids (SS) | 35 | mg/L |
| Fecal Coliforms | 250 | CFU/100 mL |
Practical Insight: It's crucial for ship operators to be aware of the current regulations (MEPC 227(64)) and to ensure that their sewage treatment plants are regularly tested and maintained to comply with these standards. Failing to do so can result in significant penalties.
