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The Fenton process, one of advanced oxidation processes (AOPs), has been widely implemented to remove COD and color for dye wastewater as a pre-treatment or posttreatment process. In recent years, Fenton-like processes have received considerable attention in wastewater removal. The main purpose of the present study was to determine the optimal operational conditions of the Fenton- like process by using raw limonite ore at various concentrations of hydrogen peroxide and raw limonite ore for treatment of dye wastewa...

Many hydrological models have been developed by researchers to simulate watersheds’ hydrologic behavior. In the aspect of robustness and suitability of models to a certain watershed depends on the watershed’s conditions which are flatness, storage capacity of surface, climate, precipitation distribution and water table level. The success of model predictions related with the selection of the model which will be used for certain watershed. This comparative study investigates various hydrological models’ stren...

Vlasina lake in Southeast Serbia is classified as an Area of Distinct Land Use. Due to high environmental protection standards, the Master Plan of the area forsees the need for high levels of protection from waste water, storm water, and sediment. The storm waste water and sediment management system implies infrastructure that consists of open channels and gutters, leading to detention basins. Prior to release into the lake, storm water and sediment from the immediate lake bank area are treated and managed within ...

In this work are presented the results of determination of physical, chemical and bacteriological parameters of water in five levels (7,40; 11,40; 18,40; 28,40 and 30,40 m) of the artificial “Radoniqi” lake, in order to select the most convenient level that offers necessary treatments to be prepared for drinking water. The obtained results show that the water of the “Radoniqi” lake is of a very high quality, soft and the water of the third level is the most suitable to be prepared for drinking after necess...

The aim of the monitoring is to evaluate the level of the existing or potentially possible pollution of groundwaters. Groundwater sampling is the necessary method for the purpose of environmental quality monitoring system creation in certain areas. Therefore standard method for this evaluation is a periodic groundwater sampling in the frame of a monitoring system. The creation of the reasonable monitoring system contains regular sampling at places significant for making conclusions about the existing or potentiall...

Surface and ground waters are used for potable water supply. Some of they contain iron and manganese. The presence of these impurities in natural waters is undesirable due to their tendency to oxidize and precipitate under a variety of conditions, causing both aesthetic and treatment water problems. The possibility to use zeolite for iron (Fe) and manganese (Mn) removal in low concentrations from water is examined in this paper. Ion-exchange process to the maximum allowable limits of 0.3 mg/L for iron and 0.05 mg/...

Performing a numerical analysis of water well drilling sector of Turkey was aimed in this study. Within this purpose, number of the machinery in equipment pool of the institutions and companies which are involved in the water well drilling, yearly drilling quantities, drilling equipment preferences and geological data of 2640 water well drilling boreholes opened in 73 provinces between the years of 1998 – 2006 and the results below have been reached: The Municipalities in Turkey meet 95 \% of their drinking wate...

Rocks deep below the surface store heat and for every 100 m in depth the temperature increases by approximately 3oC. When the mines were closed, the mine galleries flooded. The heat of the rocks warms water, which is used as input to heat pumps for heating and cooling of buildings. The Remining-Lowex Project aims to demonstrate the use of water in abandoned coalmines as a source of renewable energy and to prove its economic viability. This new approach for utilization of sustainable energy from worked out coalmine...

The results of investigations in physical – chemical, bacteriological and thermodynamic characteristics of drinking water of wells, taken from some village in some primary school of Vushtrri Municipality are presented. Taking into consideration all important parameters we found they were within given limits , just temperature that is higher than given limits, so analysis of water samples for thermo tolerant faecal coli forms which are carried out by passing a measured quantity of water through sterile filter tol...

There are 25 main river basins in Turkey. Konya Closed Basin (KCB) is 4th biggest basin according to its precipitation area which is about 53 850 km2. The area consists of two closed sub-basins those are referred to as Salt Lake Basin and Konya Basin. Disruption of the natural hydrological regimes and over-consumption of freshwater resources pose the principal threats to the wetlands, salt lakes and freshwater bodies. Irrigation schemes have diverted water from the streams that feed scattered freshwater resources ...

A finite difference method for solving the initial boundary value problem for one dimensional nonlinear system equations for investigating the quality of water on the model of shallow water flow over on isolated ringe in a class of discontinuous functions is suggested. In order to develop the numerical algorithm the special auxiliary problem having some advantages over the main problem is introduced. The solution obtained from the auxiliary problem represents all physical nature of the investigated problem with a ...

Low concentration of chlorinates maybe found in wastewater, contaminated soils and air due to different industrial sources. Low level of Volatile Organic Compounds (VOC)’s could be removed by adsorption, incineration and biofiltration methods. These methods have some disadvantages such as removal efficiency or high operation cost. Chlorine has been removed from the chlorinated aliphatic compounds under anaerobic conditions. The aim of this study was to investigate biological treatment of DCM and CT in high flow ...

Almost any places in the world, people are using groundwater for drinking and usage needs because of reduced surface and spring waters sources in last decate. Settlement areas, agricultural areas, solid waste areas, industrial areas, waste water discharge areas have always potential to pollute the aquifer media. Boreholes areas for abstracting the ground water has to be picked up not to be carrying risk getting pollution on surface. So it’s necessary for the engineers that hydrogeologic properties has to be choo...

Methods of estimating yield from ungaged watershed may be by using of climatic factors, only geographic location and watershed and climatic factors. Methods for estimating yields, as regional analysis, water accounting, direct runoff method, climatic and geographic factors, should be considered as giving estimates so broad that the influence of specific factors have large margins or error. Hydrologic simulation models in watershed modelling use mathematical equations to calculate results like runoff volume or peak...

Naturally occurring arsenic (As) in groundwater of sedimentary aquifer has emerged as a global problem, and issue of major environmental health concern. Most groundwater from the Terai Basin of Nepal is contaminated by excess arsenic. Such groundwater is widely used for drinking and irrigation purpose and makes easy means of direct entrance of arsenic into human body and food chain; and that affects human health adversely. This paper evaluates the state of arsenic contamination in the six Terai districts of Nepal ...

Surface and groundwater resources are important assets for the economic and social welfare of the population of a given area; they are renewable and with proper management, they contribute substantially to sustained development. Unfortunately, the expansion of industrial and agricultural activities lead to increasing withdrawal of water from the aquifers, excessive use of pesticides and fertilizers and (frequently illicit) disposal of industrial waste. This results in rapid reduction in the quantity and quality of...

In this study, natural radioactivity removal methods have been compared for present drinking water supplies (privately owned wells or small water works) which have radioactivity values higher than determined standards (WHO \& EPA standards). There are several methods known to remove radioactivity from water such as aeration to remove “Rn222”, adsorption by granular activated carbon (GAC) to remove “Uranium”, ion exchange methods (IX) to remove “Ra266 and Ra288”, reverse osmosis (RO) to remove “Gross ...

WATER-MAP is a 2-year project funded under the Community Initiative INTERREG III B ARCHIMED and implemented by nine partners from six countries (Greece, Italy, Malta, Cyprus, Turkey, and Palestinian Authority). The project looks at the topic of integrated groundwater resources management. The aim is to provide scientifically reliable information to the local authorities in order to develop optimal spatial development strategies. Within the framework of the project, vulnerability maps are generated in order to dete...

One of the deepest excavations in Sofia history are related to Sofia Metro Expansion project, in the section between the future Metro Stations 8 (Sofia University) and 9 (Vasil Levsky Stadium). In this section the metro tunnels are being driven with the help of a tunnel boring machine delivered by the Japanese company “Taisei Corporation”. One of the deepest locations is nearby Vasil Levsky Stadium where the ventilation shaft is situated. According to the design, the depth of the ventilation shaft is 21 m. The...

This paper describes removal of Pb(II) ions from aqueous solutions using NaOH modified pine barks (Pinus nigra). Chemical modification and its enhancement effect on adsorption capacity for heavy metal treatment process have been investigated in this article. Changes of the surface properties after modification were examined by the FT-IR analysis. Maximum adsorption capacity was 49 mg/g at pH 8 and during about 180 min contact time (for 35 mg/L initial concentration with 2.5 g/L solid-to-liquid ratio) These modific...

Wastewater treatment plant design calculation is complex and time-consuming task. The person who is in charge of calculations should be sure about the criterias about the unit to be sized and should use appropriate inputs. Vital point of design is generally using the best input within the range to have more sensible results. Web based design calculations of wastewater treatment plant software has been coded. PHP and JavaScript languages have been used to achieve these advantages. With the aid of error checking, th...

The article describes electrolytic waste water treatment methods which were applied for industrial waste water treatment, particularly from energy industry, leaking mining waste waters, color waters from different industries and for municipal waste waters.

As we have already approached the 21st Century, there is a growing need for management and utilization of natural resources for its optimal beneficial use with the concurrent technologies. The demands for the fresh water are increasing rapidly requiring holistic management of fresh water as a finite and vulnerable source.. Thus knowledge about water quality of the rivers for the effective management has become most interest aspect. Haraz is a basic river in northern Iran that flows northward from foot of Mount Dam...

Total hydroelectric potential of Slovak streams are used more than 70\%-, whereas the average of water energy of energy consumption is 20\%. This result was secured by 21 Great water power stations with a performance advanced than 10 MW. Currently hydroelectric potential of Slovak republic is used approx. 57,8\%-, the potential of Small water power plants approx. 11\% -. [6] The Small Water Power Plants (SWPP) are characteristic by their construction and operation without any negative effect to our environment as ...

Sedimentation and corrosion potential are the major problems that exit in all industries particularly in water industry which cause decrease of public health, water quality depletion, facilities and piping equipment scales. Thus their control leads to promotion of water health and quality. The purpose of this research is determination of the potential in drinking water network in Behshahr city, north of Iran.We used major indexes such as Langelier Index, Ryzner Index and Corrosion index. Samples are taken from 9 a...

The surface properties of natural Bentonite can be greatly modified by simple ion-exchange with cationic surfactant and this organo-bentonite is highly effective in removing organic compounds from water. In this study bentonite was treated with Alkyl Dimethyl Benzyl Ammonium Chloride (ADBAC). In sorption experiments, each batch test sample was prepared with 0.1, 0.5 and 1.0 g Bentonite (B) and Modified Bentonite (MB) separately together with aqueous Phenol solution. Adsorption of 10 and 50 mgL-1 Phenol on to B and...

Imam Khomeini petrochemical co. is one of the biggest oil producer centers across Iran. Aromatic unit is one of the eleven units of corporation. Hygienic and industrial wastewaters are flow in swage system of the unit. Industrial wastewater consist a considerable volume of swage and produced in 9 different section of aromatic unit. Wastewater of this unit evacuate to the seawater without forwarding through the suitable water treatment system. With purpose of qualitative and quantitative study of aromatic unit’s ...

The purpose of this study is the identification of the current state of sewerage network in the Prizren Municipality and calculation of the quantity and quality of wastewaters in the sewerage network prior to discharge in Lumbardhi river. This is done in order to enable location of various points for the installation of facilities which shall be used for wastewater treatment in this municipality. The definition of wastewaters, their quality, the percentage of citizens with access to sewerage network are some of th...

The climate system of the earth, globally and locally, obviously has been changed from pre-industrial period to present. Some of the changes are due to natural phenomena and some due to human activities, where the crucial role has been played by the emission of so-called “green house gasses” (GHG). By 1990 the measured concentrations of GHG had reached their highest level. From the enlarged volume of observations we have come to the picture of world that is getting warmer. The observed climate changes and thei...

At present, there is a lot of interest in the use of dynamic simulation for optimization and operation of wastewater treatment plants. For this purpose, different mathematical models are used. Development of these models requires a complicated conceptual approach. It involves identification of all carbonaceous and nitrogenous components. The Activated Sludge Model No.1 (ASM1) presented by the IAWQ Task Group on Mathematical Modelling for Design and Operation of Biological Wastewater Treatment Processes is generall...

In this article, pollution of ecological systems with heavy metals and their hazardous effects were investigated as a view of waste management. Several industries from mining to electroplating produce large volumes of wastewater containing heavy metals. These wastewater cause accumulation of heavy metals through ecological circle in soil, plants and animals which directly enter human food chains presenting a high hazardous effect on consumers. They may cause severe damage of the kidney, reproductive system, liver,...

Low concentration of chlorinated aliphatic compounds may be found in wastewater and contaminated soils from different industrial sources and in the air arisen from these type sources. Low levels of Volatile Organic Compounds (VOC)’s could be removed by adsorption, incineration or biofiltration methods. These methods have some disadvantages with low removal efficiency or high operation cost. Chlorine has been removed from the chlorinated aliphatic compounds by biological methods at anaerobic conditions. The aim o...

As a part of the national project for the development of sustainable water resources, the geochemical studies on an alluvial aquifer system developed in the vicinity of the Nakdong River were carried out for the feasibility study of river bank filtration in Korea. Through the river bank filtration, we intend to secure the sustainable water resources by increasing river water quality polluted from industrialization and preventing an excessive groundwater extraction from alluvial aquifer with defining the most optim...

In the connection with work on the International project NATO Science for Peace 973739 "Dynamics, evolution and limitation of heavy metal water pollution in the Plovdiv region (Bulgaria)" a complex ecological investigation was accomplished. The main parts of the work have been related to clarification of the hydrogeological peculiarities in order to assess conditions and risk of contamination of the ground waters. For this purposes in the period 2001-2003 a monitoring network for seasonal and monthly observations ...

Twenty three (23) waste water samples, seven (7) soil and twenty two (22) plant ones from the region of the “Pernik” Central Preparation Plant (CPP) are a subject of study. A season method of sampling has been used . The water samples have been taken as follows: 1) water coming in the plant for preparation; 2) water, used during the dressing; 3) water used to transport the slime and fly ash; 4) water, running out of the slime storage; 5) water, that is draining. They have been tested by: ICP for Hg, Al, Cd, As...