Technology of purifying and disinfecting ballast water

Crumb rubber filtration: a potential technology for ballast water treatment.

The removal of turbidity, particles, phytoplankton and zooplankton in water by crumb rubber filtration was investigated. A substantial reduction was achieved. Of the three variables, filter depth, media size and filtration rate, media size had the most significant influence. Smaller media size favored higher removal efficiency of all targeted matter. There was no apparent relationship between r...

Evaluation of ballast water risk assessment

Simulation of gamma irradiation system for a ballast water treatment

  ABSTRACT Background: Invasion  by  different  kinds  of  ballast  water  microorganisms  is  one  of  the  most important  marine  environment  problems  around  the  world therefore  preventing the  invasion  of  these  unwanted  and  harmful  stowaways  is  one  of  the  main strategies  of  responsible  agencies.  Some  of  these  methods  such  as  ocean excha...

Microbiological effectiveness of disinfecting water by boiling in rural Guatemala.

Boiling is the most common means of treating water in the home and the benchmark against which alternative point-of-use water treatment options must be compared. In a 5-week study in rural Guatemala among 45 households who claimed they always or almost always boiled their drinking water, boiling was associated with a 86.2% reduction in geometric mean thermotolerant coliforms (TTC) (N = 206, P <...

Comparison of Seawater and Freshwater Ultrafltration on Semi-Industrial Scale: Ballast Water Treatment Application

Non-native aquatic species can be introduced in new areas through emptying of the ballast tanks, with a high impact on health, economy and environment. This is considered by the International Maritime Organization (IMO): (i) in 2004, the IMO adopted the International Convention for the Control and Management of Ships' Ballast Water and Sediments (BMW Convention) in orde...