Environment Protection Engineering

Items from 1 to 20 out of 1 186 results

article

Effluent quality after sludge fermentation

M. Lohse, T. Boning, B. Ballenkemper, S. Hams, more

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 133-143

Up to now, the anaerobic treatment of biowaste has been of little importance in comparison to composting. In the last few years, however this technique has won an increasing acclaim, which is apparent from the yearly increase in the number of plants being built. When compared with composting, the advantages, especially in the control of odours and the energy output, can be seen. However, our understanding...

article

Possibilities of simultaneous minimization of water, energy and chemical consumption at dyehouse in the Textile Company 'Luxpol' Co.

S. Barska, A.R. Szaniawski

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 85-94

Nowadays environmental management is very important part of management in industry.The heart of the environmental management is minimizing pollution at the source. At the Textile Company 'Luxpol' Co. in Stargard Szczeciński near Szczecin, dyehouse is the biggest user of water and heat energy. This paper is focused on a simple way of simultaneous minimization of water, energy and chemicals consumption...

article

Kinetics of the biodegradation of wine distillery wastewaters by anaerobic digestion.

F. Javier Benitez, J. Beltran-Heredia, T. Gonzalez, F. Real

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 49-56

The anaerobic purification of wine distillery wastewaters (WDW) was investigated in a batch reactor containing immobilized microorganisms. Several experiments were conducted by varying the initial substrate concentration (measured as COD). The removal of the COD is determined and a value of 206 cm3 of CH4 produced/g of COD removed is obtained for the methane yield coefficient. By use of the Monod...

article

Catalytic oxidation of trichloroethylene (TCE) in two-component mixtures.

A. Musialik-Piotrowska, K. Syczewska

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 113-121

The efficiency of TCE oxidation over monolithic Pt-Rh catalyst on metallic support with Al2O3 washcoat was investigated when TCE was oxidized alone or in two-component mixtures with nonhalogenated organic compounds (two hydrocarbons and three oxyderivatives) in air. The presence of TCE inhibited the catalyst activity in each nonhalogenated compound conversion, and the oxidation of ethyl acetate or...

article

Mathematical model and its calibration for Rzeszów wastewater treatment plant.

L. Bogdan, J. Łomotowski, Z. Nahorski, J. Studziński, more

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 95-112

A model of the activated sludge wastewater treatment plant in Rzeszów is presented. It consists of submodels of primary clarifiers, aeration basins and secondary clarifiers, including equations describing the physical and biochemical transformations taking place in the vessels; sedimentation and thickening in the clarifiers and biological transformations of the influent wastewater components in the...

article

Catalytic oxidation of organic compounds including polycyclic aromatic hydrocarbons (PAHs) from motor exhaust gases.

A. Musialik-Piotrowska, K. Syczewska, B. Mendyka

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 123-132

A major contribution to the PAHs emission in the urban areas comes from motor exhaust gases emitted by both spark ignition and Diesel engines. Catalytic converters are widely used devices for the spark ignition emission control. A monolithic noble metal catalyst (Pt, Pd, Rh) was manufactured for the purpose of the study. Its activity was tested in the oxidation of volatile organic compounds (VOCs)...

article

Municipal solid waste compost quality in Cairo City and its effect on growing food crops.

F. Abdel-Sabour Mamdouh, A. Massoud Massoud, A. Rizk Magdy

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 5-16

Municipal solid waste (MSW) compost was, on occasion, collected from Shoubra compost plant Cairo during 1994-1995. Physical and chemical characteristics of the MSW compost were investigated and its heavy metal content was determined using instrumental neutron activation analysis (INAA) technique for total Fe, Co, Cr and Zn, while Mn, Cu, Cd, Pb and Ni concentrations were determined by means of atomic...

article

Intergrated processes of chemical and biological oxidation of wastewaters.

S. Ledakowicz

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 35-47

Biological treatment of wastewater has been known for almost hundred years; however , in the case of industrial wastewaters this method is not sufficient because they carry high content of xenobiotics along. The efficiency of biodegradation may significantly be increased by chemical oxidation. Recently, the so-called advanced oxidation processes (AOPs) combined with biological treatment have appeared...

article

Batch trials for description of 59Fe transport processes onto clinoptilolite.

E. Chmielewska

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 57-63

The paper deals with the fundamental transport processes of 59Fe radionuclide from modelled aqueous solutions onto Slovakian zeolite and Chinese clinoptilolites as reference in order to determine external and internal diffusion parameters : K, k1, k2 , D. A simplified adsorption model was applied. Classical equilibrium and kinetic experiments in batch operating mode at 3 various temperatures (20,...

article

Treatment of surface waters with polymeric ultrafiltration membranes.

K. Konieczny

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 17-34

Among all the technologies of water treatment , membrane technology appears to be the most promising. The major advantage of this technology is its ability to produce the water of constant and well adjusted quality. Moreover, membranes remove a broad spectrum of substances, ranging from particles to ions, including bacteria and viruses, and they can operate without any addition of chemicals to raw...

article

Inorganic membranes in food processing.

M. Trzebiatowska, D. Szaniawska

Environment Protection Engineering > 1998 > vol. 24, nr 1-2 > 65-83

Micro- and ultrafiltration membrane processes are extremely useful in food processing. Of numerous technological solutions of the micro- and ultrafiltration membranes, wide application has been found for inorganic membranes, especially those formed-in-place (FIP). The investigation undertaken in the field of protein separation on the microporous membrane with TiO2 layer have allowed us to determine...

article

A review of chemically reactive plume models. Part I. Models incorporating macro-mixing process

M. T. Markiewicz

Environment Protection Engineering > 1998 > vol. 24, nr 3-4 > 5-25

Chemically reactive plume models describing the formation of secondary pollutants in plumes emitted from tall stacks are presented. The models are grouped together in classes according to the way in which turbulent mixing processes are described. The term turbulent mixing involves here both macro-mixing and micro-mixing. Macro-mixing processes account for the variation of mean concentrations, while...

article

Examples of the wastewater disposal in the new Federal States of Germany

M. Lohse, J. Dziopak

Environment Protection Engineering > 1998 > vol. 24, nr 3-4 > 64-84

t is well known that Federal Republic of Germany (FRG) and the German Democratic Republic (GDR) have reunited. New federal states with about 17 milion inhabitants are as follows: East Berlin, Brandeburg, Mecklenburg-Vorpommern, Sachsen, Sachsen-Anhalt and Thuringen. This paper begins with the descriptions of sewage disposal at the time of the reunion and than discussed the improvements that will have...

article

Contents of heavy metals in livers, kidneys and muscles of game in south-west Poland

A. Chyla, K. Lorenz, A. Renzoni, C. Gaggi

Environment Protection Engineering > 1998 > vol. 24, nr 3-4 > 31-40

Concentrations of mercury, cadmium and lead in livers, kidneys and muscles of red deer, roe deer, wild boar and hare collected in industrial and non-industrial regions of Lower Silesia. Poland, during the hunting season 1995-1996 and 1996-1997 are reported. In industrial areas, percentage of samples containing specific heavy metals in concentrations exceeding their admissible levels is higher than...

article

Treatment of mixed dyes and municipal wastewaters by activated sludge

K. Gruszecka, T. Jankowski

Environment Protection Engineering > 1998 > vol. 24, nr 3-4 > 41-52

For three years, the company Ekolog Systems has been engaged in establishment of a wastewater treatment plant in Zgierz. This plant operates under specific conditions because except a municipal wastewater line there is an important second line - wastewater containing the dyes from the 'Boruta' Dyestuff Industry Works. The 'Boruta' Dyestuff Industry Works is one of the biggest polluters in Poland....

article

Environmental hazards due to mercury: Mercury content in the xylites of Poland's brown coal mines and in conifer wood

J. Szwed-Lorenz, K. Lorenz

Environment Protection Engineering > 1998 > vol. 24, nr 3-4 > 27-30

Xylite samples collected from four Polish brown coal deposits were analysed for mercury content, which was found to vary from 0.02 to 1.19 ppm. Samples of conifer wood were taken and analysed for the presence of mercury, as coniferous trees were the principal starting material for the formation of xylite. The species selected for the study have grown within a 1-ha area and are approximately of the...

article

Statistical analysis of radiosonde measurements of wind speed in Poland

A. Madany, K. Michałowska-Knap, K. Orlikowska

Environment Protection Engineering > 1998 > vol. 24, nr 3-4 > 97-120

Radiosonde measurements og wind speed at three stations belonging to the Institute of Meteorology and Water Management (Legionowo, Łeba and Wrocław) in a 5 year period (1991-1995) were analysed, using the method reported in European Wind Atlas. The frequencies of wind vector components on 5 levels (up to 200 m above the ground level) and parameters A and C the Weibull statistical distribution are...

article

Changes of organic compounds during the water treatment in Warsaw, Poland

J. Dojlido, E. Zbieć

Environment Protection Engineering > 1998 > vol. 24, nr 3-4 > 53-63

The changes of organic compounds during the water treatment were studied. Investigations were carried out in two big waterworks in Warsaw, Poland. The raw water is taken from surface water, from two sources, i.e. the Vistula River and Zegrzyńskie Lake. The following groups of organic compounds were determined: organochlorine pesticides, PCBs, chlorinated benzene, volatile chlorinated hydrocarbons,...

article

An urgent need to analyze the regulations over the flood prevention and protection in Poland

M. Rutkowski

Environment Protection Engineering > 1998 > vol. 24, nr 3-4 > 130-143

The recent flood of July 1997 and serious losses caused by inundation, specially in the catchment area of the Odra River, concentrated our attention on the flood control and prevention oriented to the reduction of flood risk. That may be achieved by rational policy of area development and by effective and proper flood control. Effectiveness of the prevention and protection against flood depends on...

article

Porous ion exchange membranes

M. Bryjak, G. Poźniak

Environment Protection Engineering > 1998 > vol. 24, nr 3-4 > 85-95

This paper presents several methods allowing preparation of porous membranes with limited ability to be fouled. The methods are based on membrane surface modification by anchoring some ionogenic groups. Unique properties of these membranes enabled us to specify a peculiar class of membranes and call it Porous Ion Exchange Membranes (PIEMs). In the paper, the methods for PIEM preparation are described...

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INFONA - science communication portal

Environment Protection Engineering

Effluent quality after sludge fermentation

Possibilities of simultaneous minimization of water, energy and chemical consumption at dyehouse in the Textile Company 'Luxpol' Co.

Kinetics of the biodegradation of wine distillery wastewaters by anaerobic digestion.

Catalytic oxidation of trichloroethylene (TCE) in two-component mixtures.

Mathematical model and its calibration for Rzeszów wastewater treatment plant.

Catalytic oxidation of organic compounds including polycyclic aromatic hydrocarbons (PAHs) from motor exhaust gases.

Municipal solid waste compost quality in Cairo City and its effect on growing food crops.

Intergrated processes of chemical and biological oxidation of wastewaters.

Batch trials for description of 59Fe transport processes onto clinoptilolite.

Treatment of surface waters with polymeric ultrafiltration membranes.

Inorganic membranes in food processing.

A review of chemically reactive plume models. Part I. Models incorporating macro-mixing process

Examples of the wastewater disposal in the new Federal States of Germany

Contents of heavy metals in livers, kidneys and muscles of game in south-west Poland

Treatment of mixed dyes and municipal wastewaters by activated sludge

Environmental hazards due to mercury: Mercury content in the xylites of Poland's brown coal mines and in conifer wood

Statistical analysis of radiosonde measurements of wind speed in Poland

Changes of organic compounds during the water treatment in Warsaw, Poland

An urgent need to analyze the regulations over the flood prevention and protection in Poland

Porous ion exchange membranes

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