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PRCI PR-85-62
- Characterization and Treatment Evaluation of Hydrostatic Test Water
- Report / Survey by Pipeline Research Council International, 08/01/1973
- Publisher: PRCI
$6.00$12.00
L01974e
New Mexico State University
Need: During the last several years, national attention has been focused on the many varied problems associated with existing and potential pollution of our environment. Concern for our environment has created new regulations and laws that foster state and federal agencies to deal with implementing and enforcing these regulations. In 1971, Pipeline Research Council International, Inc. recognized that one of the areas that could eventually be covered by these regulations was the dewater effluent related to pipe hydrostatic tests. Even though there was no apparent national concern or significant state concern with this effluent, it was determined that an in-depth analysis should be performed to determine both the extent of pollution and some possible abatement procedures.
Result: This investigation of the pollution aspects of the hydrostatic test effluent concerned three separate phases: (1) the study of the existing and new 1972 water pollution laws pertinent to this type of water pollution, (2) the characterization of the hydrostatic test water effluent as a possible pollutant, and (3) evaluation of treatment methods of the hydrostatic test water prior to its return to receiving waters. It was determined that the polluting parameters of the hydrostatic test water that were significant were iron and chemical oxygen demand (COD). In new pipelines concentrations of iron and COD are low in old pipelines the iron concentration is high for the entire dewatering period and will usually, therefore, require treatment before being returned to the receiving state waters.
Benefit: The results of this work are significant. This report essentially defines the magnitude and extent; of potential pollution from hydrostatic test de-water. It also provides for interim solutions where corrective action is required. If further research is required, it should be in the area of developing hardware to specifically solve the problem of on-stream hydrostatic test effluent filtering technique.
New Mexico State University
Need: During the last several years, national attention has been focused on the many varied problems associated with existing and potential pollution of our environment. Concern for our environment has created new regulations and laws that foster state and federal agencies to deal with implementing and enforcing these regulations. In 1971, Pipeline Research Council International, Inc. recognized that one of the areas that could eventually be covered by these regulations was the dewater effluent related to pipe hydrostatic tests. Even though there was no apparent national concern or significant state concern with this effluent, it was determined that an in-depth analysis should be performed to determine both the extent of pollution and some possible abatement procedures.
Result: This investigation of the pollution aspects of the hydrostatic test effluent concerned three separate phases: (1) the study of the existing and new 1972 water pollution laws pertinent to this type of water pollution, (2) the characterization of the hydrostatic test water effluent as a possible pollutant, and (3) evaluation of treatment methods of the hydrostatic test water prior to its return to receiving waters. It was determined that the polluting parameters of the hydrostatic test water that were significant were iron and chemical oxygen demand (COD). In new pipelines concentrations of iron and COD are low in old pipelines the iron concentration is high for the entire dewatering period and will usually, therefore, require treatment before being returned to the receiving state waters.
Benefit: The results of this work are significant. This report essentially defines the magnitude and extent; of potential pollution from hydrostatic test de-water. It also provides for interim solutions where corrective action is required. If further research is required, it should be in the area of developing hardware to specifically solve the problem of on-stream hydrostatic test effluent filtering technique.
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