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A Discharge Monitoring Report (DMR) is a United States regulatory term for a periodic water pollution report prepared by industries, municipalities and other facilities discharging to surface waters. [ 1 ] : 8–14 The facilities collect wastewater samples, conduct chemical and/or biological tests of the samples, and submit reports to a state ...
The oily discharge is sent out to sea through a pump. [5] The oily mixture has to pass through a series of sensors to determine whether it is acceptable to be sent to the discharge pipe. [6] Based on regulations, the following values must be recorded by the system: [3] Date and time of the discharge; Location of the ship; Oil content of the ...
Municipal and industrial permittees are required to regularly collect and analyze wastewater samples, and submit Discharge Monitoring Reports to a state agency or EPA. [17] Amendments in 1977 required stricter regulation of toxic pollutants. [18] In 1987 Congress expanded NPDES permit coverage to include municipal and industrial stormwater ...
Discharge overboard or disposal otherwise of bilge water that has accumulated in machinery spaces. Entries shall be made in the oil record book on each occasion, on a tank to tank basis if appropriate, whenever any of the following cargo/ballast operations take place on any oil tanker to which this section applies— [ 3 ]
Oil discharge monitoring equipment (ODME) is a very important technology mentioned in MARPOL Annex I that has greatly helped improve sanitation in these areas. [ 7 ] The oil record book is another integral part of MARPOL Annex I , helping crew members log and keep track of oily wastewater discharges, among other things.
If the oil content is higher than 15 ppm, the OCM will activate an alarm and move a three-way valve that, within a short period of time, will recirculate the overboard discharge water to a tank on the OWS suction side. [4] An OCM takes a trickle sample from the OWS overboard discharge line and shines a light through the sample to an optical sensor.
Industrial facilities may generate the following industrial wastewater flows: [citation needed] Manufacturing process wastestreams, which can include conventional pollutants (i.e. controllable with secondary treatment systems), toxic pollutants (e.g. solvents, heavy metals), and other harmful compounds such as nutrients
The first part is the oil content meter. The second is a flow meter which measures the flow rate of the water at the discharge pipe. [5] Third, is a computing unit which calculates how much oil has actually been discharged along with the day and time of the discharge. [5]