Wastewaters

Wastewaters

Bilgewater / Oily water separator effluent analysis

Bilgewater is a mix of oily fluids and other pollutants from a variety of sources onboard a vessel and it must to be separated and then analyzed before discharged and non compliance released oil into marine ecosystems that can potentially damage marine life, terrestrial life, human health, and the environment.

Bilge water analysis is regulated as per IMO Marpol Annex I and under to US – EPA’s 2013 Vessel General Permit (VGP).

List of analytes measured in bilge water samples are as following:

  • Hydrocarbon Oil index
  • n-Hexane Extractable Material (HEM)

Graywater analysis

Graywater is defined as wastewater that consists of discharges water from baths, showers, hand basins, washing machines, dishwashers, and kitchen sinks.

The discharge Gray water should be analysis according to US – EPA’s 2013 Vessel General Permit (VGP) with the following parameters:

  • Biochemical Oxygen Demand (BOD),
  • Fecal Coliform
  • E. coli
  • Total suspended solids (TSS)
  • pH and
  • Total Residual Oxidant.

Exhaust Gas Scrubber Washwater Discharge Analysis

International regulations to minimize sulphur emissions in the shipping sector have introduced exhaust gas cleaning systems (EGCS), often referred to as “Scrubbers”, as a means of reducing atmospheric sulphur emissions and so emit less air pollution.
Many flag States, organizations and ship operators are conducting investigations to address the concern that the use of EGCS may shift pollution from the atmosphere to the marine water. Any vessel discharging exhaust wash water into waters subject to the US – EPA’s 2013 Vessel General Permit (VGP) is required to collect samples and analyze them.

Also by IMO Resolution MEPC 259(68) Compliance, discharges of washwater to sea must be monitored.

SpectrumLabs offers onboard sampling and laboratory analysis of the parameters required by IMO and the US-EPA’s 2013 VGP.

The parameters of Scrubber washwater analyzed by Spectrumlabs are as follows:

  • Dissolved Metals,
  • Total Metals,
  • Polycyclic Aromatic Hydrocarbons (PAHs)
  • Nitrate/Nitrite,
  • pH,
  • Total Residual Oxidant.
  • Turbidity.

Sewage Effluent analysis

There are sewage water sources of pollutants produced from the toilet and that gets carried away in the sewage tank during ship operation. The untreated or insouciently treated wastewater is a direct threat to the environment.
It is necessary to study the parameters of sewage water discharging into the ocean, so as to preventing ship sewage polluting the waters.

The analysis of sewage water according to IMO MEPC.2 (VI), MEPC.227 (64) and MEPC.159 (55) resolutions and guidelines related to MARPOL Annex IV:

  • Chemical Oxygen Demand (COD)
  • Biochemical Oxygen Demand (BOD),
  • Fecal Coliform
  • Total suspended solids (TSS)
  • pH,

For wastewater analysis we offer free-of-charge, as part of our services, specialized sampling kits with glass or plastic sterilized sampling bottles (if needed, Sodium Thiosulfate as a preservative is included to the bottles), depending on each kind of analysis according to US – EPA’s VGP and as per IMO requirements, pre-labeled with specific information, step-by-step sampling instructions, procedures for sample packing and shipping materials for global dispatch.

We undertake pickup and shipment of samples from ports worldwide to the lab within 48hrs.