Author: B. E. BlomPublisher:
ISBN:
Category : Carbon
Languages : en
Pages : 190
Book Description
Effect of Sediment Organic Matter on Migration of Various Chemical Constituents During Disposal of Dredged Material
Author: B. E. BlomEffect of Sediment Organic Matter on Migration of Various Chemical Constituents During Disposal of Dredged Material
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 183
Book Description
The disposal of both freshwater and saltwater sediments in open waters has been experimentally investigated in the laboratory. The emphasis of the experimental work was directed towards identifying the role that sediment organic carbon has in controlling various water-quality parameters at disposal sites. Long-term studies examined the possibility of transport of material from sediments into an overlying water column as well as monitoring the changes in the aqueous phase which initially contained large amounts of suspended matter. For the latter case, metal and nutrient concentrations were initially high but decreased significantly with time. Exceptions to this behavior were noted. Specific components were identified which migrated from the sediment into the water column. They include ammonium-nitrogen, orthophosphate, cadmium, and manganese, the latter only in seawater media. Organic carbon and inorganic nitrogen underwent transformations with the systems investigated. Both sediment organic carbon and soluble organic matter were generally found to have no demonstrable effect on water quality. Exceptions to this general conclusion were found in two sediments containing significant amounts of petroleum hydrocarbons.
Effect of Sediment Organic Matter on Migration of Various Chemical Constituents During Disposal of Dredged Material
Author: Cold Regions Research and Engineering Laboratory (U.S.)Publisher:
ISBN:
Category : Carbon
Languages : en
Pages : 0
Book Description
The disposal of both freshwater and saltwater sediments in open waters has been experimentally investigated in the laboratory. The emphasis of the experimental work was directed towards identifying the role that sediment organic carbon has in controlling various water-quality parameters at disposal sites. Long-term studies examined the possibility of transport of material from sediments into an overlying water column as well as monitoring the changes in the aqueous phase which initially contained large amounts of suspended matter. For the latter case, metal and nutrient concentrations were initially high but decreased significantly with time. Exceptions to this behavior were noted. Specific components were identified which migrated from the sediment into the water column. They include ammonium-nitrogen, orthophosphate, cadmium, and manganese, the latter only in seawater media. Organic carbon and inorganic nitrogen underwent transformations with the systems investigated. Both sediment organic carbon and soluble organic matter were generally found to have no demonstrable effect on water quality. Exceptions to this general conclusion were found in two sediments containing significant amounts of petroleum hydrocarbons.
Effect of sediment organic matter on migration of various chemical constituents during disposal of dredged material
Author: Research Study on the Effect of Dispersion, Settling, and Resedimentation on Migration of Chemical Constituents During Open-water Disposal of Dredged Materials
Author: Kenneth Y. ChenPublisher:
ISBN:
Category : Dredge spoil
Languages : en
Pages : 256
Book Description
Disposal of dredged material at sea
Author: Physical and Chemical Characterization of Dredged Material Influents and Effluents in Confined Land Disposal Areas
Author: Ronald E. HoeppelPublisher:
ISBN:
Category : Dredging
Languages : en
Pages : 326
Book Description
Nine dredged material land containment areas, located at upland, lowland, and island sites, were monitored during hydraulic dredging operations in fresh- and brackish-water riverine, lake, and estuarine environments. Influent-effluent sampling at the diked disposal areas showed that, with proper retention of suspended solids, most chemical constituents could be removed to near or below background water levels. Most heavy metals, oil and grease, chlorinated pesticides, and PCB's were almost totally associated with solids in both the influent and effluent samples. The only chemical parameters which failed to show average decreases of less than 90 percent in total effluent samples include: titanium (89 percent), manganese (88 percent), potassium (78 percent), magnesium (64 percent), ammonium nitrogen (57 percent), mercury (46 percent), op DDE (46 percent), and pp DDE (21 percent). Effluent mercury and titanium frequently appeared to be mainly associated with
Management of Bottom Sediments Containing Toxic Substances
Author: Management of Bottom Sediments Containing Toxic Substances
Author: Spencer A. PetersonPublisher:
ISBN:
Category : Mercury
Languages : en
Pages : 732
Book Description
The Role of the Ocean in a Waste Management Strategy
Author: United States. National Advisory Committee on Oceans and AtmospherePublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 144
Book Description