Exam Question
Describe the general structure of a Ballast Water Treatment (BWT) system, highlighting the following mehtods of treatment
(a) UV treatment method
(b) Gas treatment method
(c) Electrolysis method
(d) Magnetic Seperation method
Class 1 (Chief Engineer)
Engineering Management
📅 Jan 2021
Reference Answer
### Introduction and Regulatory Framework
A Ballast Water Treatment (BWT) System is a critical piece of shipboard equipment designed to prevent the transfer of Harmful Aquatic Organisms and Pathogens (HAOP) between different geographical regions. This is mandated by the International Maritime Organization's (IMO) **International Convention for the Control and Management of Ships' Ballast Water and Sediments, 2004**. The primary goal is to meet the **D-2 Discharge Standard**, which sets stringent limits on the concentration of viable organisms and indicator microbes in discharged ballast water.
### General Structure of a BWT System
A typical BWT system employs a multi-stage approach to ensure effective treatment, generally consisting of two main stages: physical separation followed by disinfection.
A Ballast Water Treatment (BWT) System is a critical piece of shipboard equipment designed to prevent the transfer of Harmful Aquatic Organisms and Pathogens (HAOP) between different geographical regions. This is mandated by the International Maritime Organization's (IMO) **International Convention for the Control and Management of Ships' Ballast Water and Sediments, 2004**. The primary goal is to meet the **D-2 Discharge Standard**, which sets stringent limits on the concentration of viable organisms and indicator microbes in discharged ballast water.
### General Structure of a BWT System
A typical BWT system employs a multi-stage approach to ensure effective treatment, generally consisting of two main stages: physical separation followed by disinfection.
Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.
Prepare on Android — MeoMock on Google Play