Accelerated recession of a desert cliff due to sewage water disposal, Sede Boqer, Israel

1986 ◽  
Vol 8 (4) ◽  
pp. 185-192 ◽  
Author(s):  
Yaacov Arkin ◽  
Arnon Karnieli ◽  
Arie Issar ◽  
Javier Diaz Mtz.-Esparza
Keyword(s):  
Sewage Water ◽  
Water Disposal

Geocement-Based Coatings for Repair and Protection of Concrete Subjected to Exposure to Ammonium Sulfate

2014 ◽  
Vol 923 ◽  
pp. 121-124 ◽  
Author(s):  
Pavel Vasiljevich Krivenko ◽  
Sergey Grigorjevich Guziy ◽  
Vladimir Ivanovich Kyrychok
Keyword(s):  
Ammonium Sulfate ◽  
Sewage Water ◽  
Chemical Processes ◽  
Zeolite A ◽  
Hydration Products ◽  
Ammonium Ions ◽  
Corrosion Resistant ◽  
Aggressive Environment ◽  
Physico Chemical ◽  
Water Disposal

The geocement-based coatings for repair and protection of concrete structures of which the installations for production of biogas, water supply and sewage water disposal pipelines are made have been developed and have been tried in practice. Resistance of the developed coatings in an aggressive environment (5 % solution of ammonium sulfate) as well as basic physico- chemical processes taking place during interaction of the ammonium salts with the geocements have been studied and the results are discussed. A conclusion was made that among other geocement hydration products which can resist attacks of sulfate-ammonium ions, faujasite, chabazite and mordenite had the highest resistance, whereas heulandite and hydrosodalite have the lowest resistance. This assumption is in agreement with the outcomes of other researchers. The results of examination show that the ammonium-containing zeolites have been synthesized within the hydration products, these were: ammonium analcime, (NH4, Na)-zeolite-E, zeolite a, zeolite ZK-21 and NH4-zeolite-W. The coated concrete (a geocement (Na2O×Al2O3×6SiO2×30 H2O)-based coating)) is found to be corrosion resistant in aggressive environment containing ammonium sulfates: its coefficient of resistance is 1.01, being at an age of 30 days by 1.2 times higher compared to that of the uncoated concrete of the same age.

Copper bioaccumulation and translocation in forages grown in soil irrigated with sewage water

2019 ◽  
Vol 52 (1) ◽  
Author(s):  
Zafar Iqbal Khan ◽  
Hareem Safdar ◽  
Kafeel Ahmad ◽  
Kinza Wajid ◽  
Humayun Bashir ◽  
...  
Keyword(s):  
Sewage Water

Nitrate Movement in a Chilean Agricultural Area Irrigated with Untreated Sewage Water

1979 ◽  
Vol 8 (1) ◽  
pp. 27-30 ◽  
Author(s):  
E. B. Schalscha ◽  
I. Vergara ◽  
T. Schirado ◽  
M. Morales
Keyword(s):  
Sewage Water ◽  
Agricultural Area ◽  
Untreated Sewage

Pre-Precipitation Facilitates Nitrogen Removal without Tank Expansion

1990 ◽  
Vol 22 (7-8) ◽  
pp. 85-92 ◽  
Author(s):  
Ingemar Karlsson ◽  
Gunnar Smith
Keyword(s):  
Waste Water ◽  
Organic Matter ◽  
Water Treatment ◽  
Carbon Source ◽  
Nitrogen Removal ◽  
Waste Water Treatment ◽  
Chemical Precipitation ◽  
Sewage Water ◽  
Laboratory Studies ◽  
Denitrification Process

Chemically coagulated sewage water gives an effluent low in both suspended matter and organics. To use chemical precipitation as the first step in waste water treatment improves nitrification in the following biological stage. The precipitated sludge contains 75% of the organic matter in the sewage and can by hydrolysis be converted to readily degradable organic matter, which presents a valuable carbon source for the denitrification process. This paper will review experiences from full-scale applications as well as pilot-plant and laboratory studies.

Organic and Trace Metal Pollution in the Sediments of the Kishon River (Israel) and Possible Influence on the Marine Environment

1993 ◽  
Vol 27 (7-8) ◽  
pp. 439-447 ◽  
Author(s):  
Y. Cohen ◽  
N. Kress ◽  
H. Hornung
Keyword(s):  
Trace Metals ◽  
Marine Environment ◽  
River System ◽  
River Channel ◽  
Disposal Site ◽  
Lower Reach ◽  
Deposition Area ◽  
Long Time ◽  
Water Disposal ◽  
Sediment Particles

The sediments of the lower reach of the Kishon river, its harbors and estuary, sampled in 1989-1991, were highly polluted by trace metals and petroleum derived compounds released by the adjacent industries. The contamination was highest in the sediment deposition area of the Kishon fishing harbor and decreased seaward. River-borne pollution was also evident in Haifa Bay opposite the Kishon estuary. Contaminants trapped in the sediments of the lower Kishon river system can reach the marine environment through bottom transport of sediment particles and also as a result of disposal at sea of dredge spoils from the river channel and harbors. On the basis of the findings of the study, it was recommended to stop the long-time practice of dumping dredge spoils from the Kishon fishing harbor into the relatively clean Haifa Bay and to use instead an offshore deep water disposal site.

Preventing Accidental Spills: Risk Analysis and the Discharge Permitting Process

1994 ◽  
Vol 29 (3) ◽  
pp. 189-197 ◽  
Author(s):  
Frans A. N. van Baardwijk
Keyword(s):  
Risk Analysis ◽  
Surface Waters ◽  
Legal Framework ◽  
Sewage Water ◽  
Correction Factors ◽  
Analysis Method ◽  
Sewage Water Treatment ◽  
Accident Scenarios ◽  
Contaminating Substances ◽  
Permitting Process

The contribution of accidental discharges to the total emission of contaminating substances in surface waters is relatively increasing, as regular discharges are reduced. In The Netherlands a program has been started to develop a quantitative risk analysis method to be used within the discharge permitting process. The methodology takes into account the type of activities and related accident scenarios in terms of failure frequencies and source sizes, correction factors according to specific circumstances, as well as the nature of the receiving system (types of surface waters, but also public sewage water treatment plants). The methodology will provide an indication of the risk reduction needed in terms of reducing the frequency and/or the volume of possible spills. The method itself, the use of it within the legal framework and the relation with the EC-Directives are discussed.

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