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Waste water discharges into natural waters; Problematiche sulla dispersione di effluenti liquidi da canali o condotte a pelo liquido

Abstract

The acqueous discharges into natural waters is a very technical solution expecially for surface buoyant discharges. It is not only convenient to limit the concentration levels of the discharges, but also to improve the turbolent processes that diluite the discharge. Mostly these processes depend by some geometric parameters of the discharge and by some physical parameters of the effluent and of the receiving water body. An appropriate choice of some parameters, using also suitable mathematical models, allows to design discharges with a very high dilution; so the decreasing of the pollutant levels is improved and the environmental impact can be reduced versus a not diluted effluent. The simulations of a mathematical model, here described, prove that in some circumstances, expecially in case of discharges of fresh water into saline water bodies with a low velocity of the current, the dilution is poor; the effluent can be trapped in a narrow water surface layer where the pollutant concentrations remain high. also far away from the discharge point.
Authors:
Marri, P; [1]  Barsanti, P; Mione, A; Posarelli, M [2] 
  1. ENEA, Centro Ricerche Santa Teresa, La Spezia (Italy). Dip. Ambiente
  2. ENEA, Centro Ricerche Casaccia, Rome (Italy). Dip. Ambiente
Publication Date:
Dec 01, 1996
Product Type:
Technical Report
Report Number:
ENEA-RT-AMB-96-19; RT/AMB-96-19
Reference Number:
SCA: 540320; PA: ITA-97:000578; EDB-97:081871; NTS-97:011745; SN: 97001792635
Resource Relation:
Other Information: PBD: Dec 1996
Subject:
54 ENVIRONMENTAL SCIENCES; WATER POLLUTION; LIQUID WASTES; SIMULATION; FLUID FLOW; DAMS; WASTE WATER; MATHEMATICAL MODELS; GEOMETRY; CONFIGURATION; NUMERICAL DATA
OSTI ID:
479515
Research Organizations:
ENEA, Casaccia (Italy). Dipt. Ambiente
Country of Origin:
Italy
Language:
Italian
Other Identifying Numbers:
Journal ID: ISSN 1120-5555; Other: ON: DE97749292; TRN: IT9700578
Availability:
OSTI as DE97749292
Submitting Site:
ITA
Size:
30 p.
Announcement Date:
Jun 19, 1997

Citation Formats

Marri, P, Barsanti, P, Mione, A, and Posarelli, M. Waste water discharges into natural waters; Problematiche sulla dispersione di effluenti liquidi da canali o condotte a pelo liquido. Italy: N. p., 1996. Web.
Marri, P, Barsanti, P, Mione, A, & Posarelli, M. Waste water discharges into natural waters; Problematiche sulla dispersione di effluenti liquidi da canali o condotte a pelo liquido. Italy.
Marri, P, Barsanti, P, Mione, A, and Posarelli, M. 1996. "Waste water discharges into natural waters; Problematiche sulla dispersione di effluenti liquidi da canali o condotte a pelo liquido." Italy.
@misc{etde_479515,
title = {Waste water discharges into natural waters; Problematiche sulla dispersione di effluenti liquidi da canali o condotte a pelo liquido}
author = {Marri, P, Barsanti, P, Mione, A, and Posarelli, M}
abstractNote = {The acqueous discharges into natural waters is a very technical solution expecially for surface buoyant discharges. It is not only convenient to limit the concentration levels of the discharges, but also to improve the turbolent processes that diluite the discharge. Mostly these processes depend by some geometric parameters of the discharge and by some physical parameters of the effluent and of the receiving water body. An appropriate choice of some parameters, using also suitable mathematical models, allows to design discharges with a very high dilution; so the decreasing of the pollutant levels is improved and the environmental impact can be reduced versus a not diluted effluent. The simulations of a mathematical model, here described, prove that in some circumstances, expecially in case of discharges of fresh water into saline water bodies with a low velocity of the current, the dilution is poor; the effluent can be trapped in a narrow water surface layer where the pollutant concentrations remain high. also far away from the discharge point.}
place = {Italy}
year = {1996}
month = {Dec}
}