scholarly journals The importance of wastewater treatment plants for sustainable development

2021 ◽  
Vol 5 (2) ◽  
pp. 49-60
Author(s):  
Lazar Milenković ◽  
Tamara Rađenović ◽  
Anđelija Baljošević
Keyword(s):  
Sustainable Development ◽  
Wastewater Treatment ◽  
Structural Changes ◽  
Wastewater Treatment Plants ◽  
Living Environment ◽  
Public Utility ◽  
Utility Companies ◽  
Quality Of Living ◽  
The Republic

The concept of sustainable development has gained in its importance with the attempt to align the goals of economic development with the goals of preserving the quality of living environment. This paper explains the concept of sustainable development and its dimensions, emphasizing its connection with the communal activity of purification and drainage of atmospheric and wastewater. The evidence from the Republic of Serbia regarding wastewater treatment plants and environmental protection costs raises concerns about sustainability issues. Therefore, the aim of the paper is to point out the importance of increasing wastewater treatment plants' capacity and improving their operability, as well as to emphasize the necessity for structural changes of public utility companies to address the identified problems.

scholarly journals ENVIRONMENTAL CONSIDERATIONS OF LARGE WASTEWATER TREATMENT PLANTS – THE CITY OF NIŠ CASE STUDY

2019 ◽  
pp. 015
Author(s):  
Dejan Vasović ◽  
Sandra Stanković ◽  
Ljiljana Takić
Keyword(s):  
Wastewater Treatment ◽  
Water Supply ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Special Problem ◽  
Public Utility ◽  
Treated Wastewater ◽  
The Republic ◽  
The City ◽  
Wastewater Collection

Nowadays, the Republic of Serbia is at the bottom of the scale of European countries in terms of public utility equipment of the respective communal infrastructure particularly within the area of wastewater collection and treatment. The current situation in the area of water resources management in the Republic of Serbia indicates that the basic problems are insufficient construction of sewerage infrastructure in cities, i.e. insufficient coverage with the sewerage network of users connected to either public or private water supply network, followed by an insufficient number of constructed and operative wastewater treatment plants. In this sense, a particular problem is a requirement for relatively large initial investments in wastewater collection and treatment sector. Also, a special difficulty is the low price of delivered and channeled water within the existing system of public utilities, which is insufficient to provide maintenance of the existing water supply and sewage systems, regardless the future development and improvement of the existing system. Currently, only 10% of total produced wastewater quantity is treated in the Republic of Serbia, with different procedures and with uneven and, most often, insufficient purification effects. In addition to wastewater generated by the population (i.e. households connected to the sewer system), the special problem is the inadequate treatment of industrial wastewater. On the other hand, disposition of treated wastewater, disposal of separated sludge from the treatment process, odor and pest control, noise control, working conditions, etc. are significant challenges for the scientists, professionals and operators. Therefore, the aim of this paper is to comprehensively examine all environmental aspects on the example of a large wastewater treatment plant which is to be gained by the city of Niš, in the very near future.

scholarly journals Aspects of Sustainable Development of Rural Territories of the Republic of Kazakhstan

2021 ◽  
pp. 22-37
Author(s):  
Svetlana Vladimirovna Kulakova
Keyword(s):  
Sustainable Development ◽  
Rural Development ◽  
Rural Areas ◽  
Rural Population ◽  
Full Employment ◽  
Agricultural Industry ◽  
Quality Of Living ◽  
The Republic ◽  
Labor Resources

The article considers the mechanism of implementation of the concept of sustainable development of rural areas of the Republic of Kazakhstan. The author characterizes the concept of sustainable development of rural areas of the Republic of Kazakhstan, meaning their stability, socio-economic development, growth and increase in the volume of production of the agricultural industry, as well as the achievement of full employment of the rural population, and as a result, the growth of their standard of living. As a mechanism for improving the efficiency of rural areas, the author suggests considering labor resources, their employment, which is based on the population. The development of rural areas is described in stages, starting in 1991. In conclusion, the author notes that the solution to the problems of rural development is directly dependent on the effectiveness of the state policy in the field of agriculture. Therefore, today the government's attention is focused on the development of the future of the Kazakh village, the strategy of social policy and the development of infrastructure in rural areas. As the main target indicators of rural development in Kazakhstan, the author suggests improving the living conditions of the rural population in 2021 to 64% compared to the indicators of 2018–58%; improving the quality of living for 80% of the rural population in settlements that would meet modern standards of quality of life by 2030, increasing the volume of agricultural products by 2.5 times compared to the same indicators in 2017.

Automatic buffer capacity based sensor for effluent quality monitoring

1996 ◽  
Vol 33 (1) ◽  
pp. 81-87
Author(s):  
L. Van Vooren ◽  
P. Willems ◽  
J. P. Ottoy ◽  
G. C. Vansteenkiste ◽  
W. Verstraete
Keyword(s):  
Wastewater Treatment ◽  
Buffer Capacity ◽  
Wastewater Treatment Plants ◽  
Data Interpretation ◽  
Full Scale ◽  
Quality Monitoring ◽  
Effluent Quality ◽  
Capacity Curves ◽  
On Line

The use of an automatic on-line titration unit for monitoring the effluent quality of wastewater plants is presented. Buffer capacity curves of different effluent types were studied and validation results are presented for both domestic and industrial full-scale wastewater treatment plants. Ammonium and ortho-phosphate monitoring of the effluent were established by using a simple titration device, connected to a data-interpretation unit. The use of this sensor as the activator of an effluent quality proportional sampler is discussed.

Experience with the Relay Procedure for Tuning Controllers in Automatic Control of Chlorination

1993 ◽  
Vol 28 (11-12) ◽  
pp. 257-261
Author(s):  
M. Truett Garrett ◽  
Zaki Ahmad ◽  
Shelly Young
Keyword(s):  
Wastewater Treatment ◽  
Automatic Control ◽  
Time Constant ◽  
Wastewater Treatment Plants ◽  
Relay Feedback ◽  
Quality Of Control ◽  
Incomplete Mixing ◽  
Long Time ◽  
Chlorine Demand

The recent requirements by U.S.E.P.A. for dechlorination and biomonitoring have increased the importance of automatic control of effluent chlorination in wastewater treatment plants. Difficulties with the Ziegler-Nichols controller tuning procedure were reported at the Kyoto Workshop, 1990. Problems are caused by the noise of incomplete mixing, a long time constant, and the disturbances of changing flow and chlorine demand. The Astrom-Hagglund relay feedback procedure provides acceptable control while data is logged to determine the controller constants. Experiences in using the procedure in existing facilities (not redesigning the mixing point) and the quality of control are presented.

BUILDING THE SAFE CITY PLANNING CONCEPT : AN ANALYSIS OF PRECEDING STUDIES

2015 ◽  
Vol 75 (9) ◽  
Author(s):  
Arinah Rozhan ◽  
Yunos, M. Y. M. ◽  
Md Azree Othuman Mydin ◽  
Nor Kalsum Mohd Isa ◽  
Noor Fazamimah Mohd Ariffin ◽  
...  
Keyword(s):  
Land Use Planning ◽  
Fear Of Crime ◽  
City Planning ◽  
Hot Spot ◽  
Living Environment ◽  
Main Concept ◽  
Public Transport System ◽  
Quality Of Living ◽  
Planning Concept

The upsetting number of crime occurring in the cities evokes the fear of crime among the civilians. In order to provide a good quality of living environment, a safe city planning must be implemented. To achieve this, several safe city concepts are reviewed. This paper aim to study several safe city concepts done by other researchers. In order to search for the best safe city concepts, a qualitative method research which involves content analysis is the most suitable approach to be employed in this study. This research will develop a new safe city conceptual framework based on the synergy of the previous studies. It is noted that the main concept of safe city planning are the activities and proposition of land use planning, identification of hot spot crime areas, improvement of physical environment and public transport system and appropriate surveillance. 

scholarly journals Methods of reconstruction and modification of the sequencing batch reactor at municipal wastewater treatment plants in Vietnam

Vestnik MGSU ◽  
2019 ◽  
pp. 589-602 ◽  
Author(s):  
Tran Ha Quan ◽  
Elena S. Gogina
Keyword(s):  
Wastewater Treatment ◽  
Sequencing Batch Reactor ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Batch Reactor ◽  
Municipal Wastewater Treatment ◽  
Wastewater Purification ◽  
Municipal Wastewater Treatment Plants ◽  
Operation Cycle

Introduction. Vietnamese urban municipal wastewater treatment plants are mainly of aeration-type facilities. Nowadays, an aeration-type plant, the Sequencing Batch Reactor (SBR), is widely applied and possesses a number of advantages over traditional systems with suspended activated sludge. Advantages of the SBR are mainly concluded in simplicity of operation, occupied area and cost. There is a number of problems at the wastewater treatment plants; they are connected with supplying only a half of wastewater design amount for the treatment as well as with quality of the purified water that must satisfy requirements of the Vietnamese discharge standard, the Standard A. Therefore, reconstruction and modification of the SBR is the major challenger to ensure the sustained development of large Vietnamese cities and maintenance of ecological balance. Materials and methods. To enhance the efficiency of wastewater purification in the SBR, the experiments were set on reactor reconstruction and modification by two directions: (1) Technological method, i.e. applying the Biochip 25 biocarrier, and (2) Operation method, i.e. adding the anoxic phase in reactor operation cycle. Laboratory tests were conducted for each of the directions, including comparison of a typical reactor with the modified one. Results. The study resulted in obtaining an optimal amount of the BioChip biocarrier material (10 to 20 %) that increased efficiency of wastewater purification by 10 to 20 %. In addition to this, when creating an anoxic phase of the operation cycle, efficiency of nitrogen removal increased by 20 %. When the denitrification occurs under the anoxic conditions, it contributes to stabilization of ammonium nitrogen removal for daily nitrogen loading in reactor of 0.3 to 0.8 TKN kg/sludge kg. Conclusions. The suggested technology provides the quality of treated water corresponding with the Vietnamese Standard A requirements. At the present, it is planned to proceed with the experiment on the base of Vietnamese semi-industrial plant for research and appraisal of the SBR reconstruction and modification method. Acknowledgements. The authors are grateful to AKVA Control company in Samara for granted biocarrier Mutag BioChip 25 and to Associate Professor Tran Van Quang and his students, Nguyen Ngoc Phuong and Truong Quoc Dai, of Environment Protect Research Center, Danang University for support of the experiment.

scholarly journals The Quality of the Living Environment as a Result of Democratic Planning Traditions and Society Interaction: Aspect of Urban Public Security

2015 ◽  
Vol 10 (1) ◽  
pp. 33-38
Author(s):  
Jonas Jakaitis
Keyword(s):  
Sustainable Development ◽  
Public Participation ◽  
Urban Space ◽  
Living Environment ◽  
Public Security ◽  
Local Authorities ◽  
Urban Structures

Abstract The article explores ways of improving urban structures of territories especially from the aspect of urban public security. The investigation is based on theoretical principles and existing practices. Implementing the principles of sustainable development in the conditions of public participation and cooperation with local authorities, residents of the cities and towns can be successfully integrated into a modern, well-designed, safe public urban space.

scholarly journals A simple model of wastewater treatment plants for managing the quality of the Seine River

2018 ◽  
Vol 51 (18) ◽  
pp. 880-885 ◽  
Author(s):  
C.E. Robles-Rodriguez ◽  
J. Bernier ◽  
V. Rocher ◽  
D. Dochain
Keyword(s):  
Wastewater Treatment ◽  
Simple Model ◽  
Wastewater Treatment Plants ◽  
Seine River

Improving the effluent of small wastewater treatment plants by bacteria reduction and nutrient removal with an algal biofilm

2003 ◽  
Vol 48 (2) ◽  
pp. 373-380 ◽  
Author(s):  
G. Schumacher ◽  
I. Sekoulov
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Removal ◽  
Wastewater Treatment Plants ◽  
High Potential ◽  
High Quality ◽  
Secondary Pollution ◽  
Algal Biofilm ◽  
Biofilm Process ◽  
Suspended Algae

In wastewater ponds, bacteria numbers decrease considerably in the case of raised algae concentrations in the effluent. This shows that algae have a high potential for bacteria reduction in wastewater. Simultaneously, algae remove nutrients from the water for the formation of biomass. However, suspended algae also cause a high secondary pollution in the effluent of wastewater treatment plants. By using attached algae, as they are frequently observed as an algal biofilm in the effluent of wastewater treatment plants, the problem of separation of algae and water can be avoided. Furthermore, the algae can be removed simply from the water. In this study the possibilities for bacteria reduction and nutrient removal were examined with the aid of an algal biofilm. The results show that an algal biofilm process can be used for cases where small amounts of wastewater should be treated and a high quality of the effluent should be attained.

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