scholarly journals EVALUATION OF EFFICIENCY OF TREATMENT FACILITIES CITIES OF TERNOPIL BY THE COMPLEX OF HYDROCHEMICAL PARAMETERS OF THE RIVER SERET

2020 ◽  
Vol 21 ◽  
pp. 94-101
Author(s):  
V. Pashnyuk ◽  
O. Myakush ◽  
L. Sysa
Keyword(s):  
Wastewater Treatment ◽  
Sewage Treatment ◽  
Poor Performance ◽  
Treated Wastewater ◽  
Laboratory Research ◽  
Nitrogen And Phosphorus ◽  
Hydrochemical Parameters ◽  
Sewage Treatment Plants ◽  
Treatment Facilities ◽  
The City

Introduction. The quality of wastewater treatment in settlements is an important task of our time. To assess the efficiency of treatment plants in a particular city often use the hydrochemical parameters of the reservoir into which the treated wastewater is discharged. The paper describes the modern sewerage system of the city of Ternopil and the technological process of operation of citywide sewage treatment plants (STP). The purpose of the work is to find out how effectively the Ternopil STP work and whether their activity poses a danger to the Seret River and the inhabitants of coastal settlements. Methods. Hydrochemical parameters of these water samples were studied in the laboratory according to appropriate regulatory methods. Potentiometric, gravimetric, photometric and other methods of chemical analysis were used for research. Results of the research. 2 samples of water from the river Seret were taken for laboratory research. One sample was taken upstream near the outlet of the drain pipes of these structures, the second sample - downstream. Based on the obtained numerical results of the analyzes, the efficiency of the city's treatment facilities was assessed. It is shown that the overall water quality in the Seret River downstream after the discharge of the city's wastewater treatment  plants is satisfactory. The levels of nitrates and phosphates in the studied samples are almost on the border of the MPC, but this is not necessarily due to the poor performance of the city's treatment facilities. There are many agricultural lands on the banks of the river, which often use nitrogen and phosphorus fertilizers. Significant exceeding of the limit value for chemical oxygen consumption can be explained by the warm season (September). At this time, a lot of biological organic matter has accumulated in natural reservoirs. Conclusions. As a result of researches it is established that treatment facil-ities of the city of Ternopil work in a regular mode and provide sufficient sewage treatment. According to open sources, the annual dynamics of the mentioned treatment facilities is shown. As a result, it has been found that since 2017, the efficiency of the city's wastewater treatment at sewage treatment plants remains stable. Such indicators testify to the sufficient efficiency of the treatment facilities of the Ternopilvodokanal utility company.

scholarly journals Cleaning the Kafirnigan River From Sewage Pollution

2020 ◽  
Vol 6 (11) ◽  
pp. 126-131
Author(s):  
P. Murodov ◽  
O. Amirov ◽  
P. Khuzhaev
Keyword(s):  
Negative Impact ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Water Drainage ◽  
Sewage Pollution ◽  
Current State ◽  
Treatment Facilities ◽  
The City

The influence of the discharged treated wastewater on the ecology of the Kafirnigan River is considered. The data on the current state of sewage treatment facilities in the city of Dushanbe are given and an assessment of the environmental efficiency of these treatment facilities is given. Preliminary calculations of costs for the construction of a new sewage treatment plant in Dushanbe have been made. The article is devoted to the current problem of cleaning storm sewers. It should be noted that storm water drainage, like wastewater, has a negative impact on the environment. Before the wastewater is disposed of, it is necessary to treat it in a special way, subjecting it to treatment of varying degrees and depths.

scholarly journals New Approaches in Biological Wastewater Treatment Aimed at Removal of Organic Matter and Nutrients

2019 ◽  
Vol 26 (2) ◽  
pp. 331-343 ◽  
Author(s):  
Larisa Sabliy ◽  
Yevgeniy Kuzminskiy ◽  
Veronika Zhukova ◽  
Marina Kozar ◽  
Henryk Sobczuk
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
High Efficiency ◽  
Self Regulation ◽  
Electric Energy ◽  
Treated Wastewater ◽  
Laboratory Research ◽  
Nitrogen And Phosphorus ◽  
Suspended Substances ◽  
Treatment Technologies

Abstract The article presents the developed anaerobic-aerobic wastewater treatment technologies. These technologies aimed at removing the organic matter, nitrogen and phosphorus by means of microorganisms immobilized on fibrous carrier surfaces. The results of the laboratory research show the high efficiency of milk wastewater treatment. The following degrees of reduction were achieved for the pollutant indicators: COD -86.7-93 %, total nitrogen - 96.9-97.9 %. Compared to the traditional treatment technologies applied in Ukraine, these values are high. The concentration of organic matters and biomass of not attached bacteria decreased in bioreactor chambers. When the purification process ends, a small amount of excess biomass remains; therefore, its self-oxidation and self-regulation occurs as a result of consumption by the organisms occupying higher levels of trophic chains. The use of anaerobic-aerobic bioreactors system for the treatment of wastewater enables achieving high outflow quality and prevents the suspended substances from slipping. Immobilization of microorganisms on the first stage of the technology prevents the formation of big amount of excessive sludge and removes biomass from the bioreactor, which allows the technology even for the heavily polluted wastewater. In reactors containing immobilized microorganisms, the organic matter compounds used in subsequent reactors for phosphate accumulation are split. The presented biotechnology saves electric energy, provides sufficient quality of treatment, and ensure the compliance of treated wastewater with the effluent standards.

scholarly journals Chlorella vulgaris in wastewater treatment processes – practical experience

2020 ◽  
Vol 2020 (2) ◽  
pp. 21-27
Author(s):  
Lesiia Vovk ◽  
◽  
Oksana Matsiyevska ◽  
Oleh Zhdanov ◽  
◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Chlorella Vulgaris ◽  
Negative Impact ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Ammonium Nitrogen ◽  
Treated Wastewater ◽  
Nitrogen And Phosphorus ◽  
Chemical Laboratory ◽  
Biogenic Substances

Wastewater from human settlements contains a significant amount of organic and biogenic substances. Insufficiently treated wastewater enters surface water and leads to their eutrophication. The usage of microalgae in wastewater treatment has significant advantages in comparison with other methods of removing biogenic substances. Namely: effective and simultaneous removal of nitrogen and phosphorus without reagents management facilities, oxygen formation. Using microalgae in wastewater treatment is a new environmentally friendly biotechnological method. Microalgae grow well in wastewater, from which they absorb pollutants. The purpose of the study is to analyze the work and determine the possibility of intensification of sewage treatment plants in the western region of Ukraine with a population of about 18,900 inhabitants. Productivity of treatment plant is 3400 m3/day. Experimental investigation consisted in adding a concentrate of a living microalgae strain of the species Chlorella vulgaris to the wastewater that was entered to the treatment plant during May-September 2019. During the research, the results of wastewater analyzes conducted by the chemical laboratory of the municipal water supply and sewerage company were used. The results of the survey and analysis of the city's treatment plant indicate an insufficient degree of wastewater treatment. The effectiveness of Chlorella vulgaris at the treatment plant has been experimentally proven. Mathematical dependences of the effect of wastewater treatment (using Chlorella vulgaris) on their temperature according to the indicators: BOD5, COD, concentration of ammonium nitrogen, phosphates and suspended solids were obtained. Dependencies are described by a linear function that characterizes the general behavior of the obtained data. The obtained results made it possible to significantly reduce the negative impact of treatment plants on the environment.

scholarly journals The efficiency of municipal sewage treatment plants inspiration for water recovery

2021 ◽  
Vol 2021 ◽  
Author(s):  
Karolina Wójcicka
Keyword(s):  
Wastewater Treatment ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Water Recovery ◽  
Sewage Treatment Plants ◽  
Treated Sewage ◽  
Treatment Facilities ◽  
Required Quality

This article presents a detailed analysis of the functioning of municipal sewage treatment plants. The presented findings are based on questionnaires from over seventy wastewater treatment facilities, covering from several hundred to several hundred thousand inhabitants. The required quality of treated sewage and the necessary efficiency level of the treatment plant were determined in the context of the content of the applicable regulations, and were then compared with the actual data obtained from sewage treatment plants. The findings provided the basis for formulating an evaluation of the efficiency of municipal sewage treatment plants and for further analyses of the possibility of the recovery of water from sewage and its reuse.

ENVIRONMENTAL ASPECTS OF WATER SUPPLY AND DRAINAGE AT THE ENTERPRISES OF THE TAMBOV INDUSTRIAL HUB

2020 ◽  
pp. 41-45
Author(s):  
Ryazanov A.V. ◽  
Mozharov A.V. ◽  
Zawershinskiy A.N.
Keyword(s):  
Wastewater Treatment ◽  
Surface Water ◽  
Water Supply ◽  
Negative Impact ◽  
Water Bodies ◽  
Toxic Waste ◽  
Treated Wastewater ◽  
Industrial Enterprises ◽  
Treatment Facilities ◽  
The City

One of the reasons for the current global environmental crisis is the intense anthropogenic impact on water bodies, which results in their depletion and pollution. The source of the negative impact is, in particular, insufficiently treated wastewater from industrial enterprises. Depending on the technological processes used, toxicants can enter the water bodies along with the effluents, which pose a serious threat to them. The aim of the work is to consider the features of water supply and wastewater disposal of enterprises that make up the industrial hub of the city of Tambov. The work used methods of analysis of technical documentation and statistical reporting characterizing the qualitative and quantitative composition of wastewater. Water supply of the considered enterprises is carried out from the city water supply network and own artesian wells. All enterprises do not have full-fledged treatment facilities capable of carrying out a full cycle of wastewater treatment with bringing them to a standard clean state. The use of galvanic technologies in production requires preliminary cleaning at local treatment facilities. Then the wastewater goes to the city wastewater treatment plant, where it is processed together with the municipal wastewater. Normally clean and storm water flows directly into the surface water body. The largest enterprise of the industrial hub pumps its industrial effluents into deep aquifers. Over the entire period of its operation, over 52 million m3 of liquid toxic waste was injected. As a result, a zone of contaminated groundwater was formed under the enterprise and adjacent territories. In them, the excess of the maximum permissible concentrations for a number of parameters is constantly noted. Thus, this enterprise is a source of powerful, direct negative impact on groundwater and, indirectly, on surface water. This led to the emergence of a zone of sustainable environmental risk.

Modeling and recycling simulation of the wastewater treatment plant of the city of Mrirt

2013 ◽  
Vol 8 (3-4) ◽  
pp. 323-329
Author(s):  
Siham Belarbi ◽  
Mustapha Mahi ◽  
Youssef Abarghaz ◽  
Najib Bendaou
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Simulation Results ◽  
The One ◽  
The Impact ◽  
The City ◽  
Anaerobic Lagoons

This work focuses on the wastewater treatment plant (WWTP) in the city in Morocco called ‘Mrirt’. This WWTP produces quite noticeable odors especially from the anaerobic ponds, leading to the search for a solution to reduce odors. The location is not far from habitations. The solution chosen is the recycling of effluent from the exit of the plant towards the anaerobic ponds. The study consists in modeling the effect of recycling wastewater. Modeling discussed is to bring the operation of the anaerobic and facultative ponds by mathematical models that can then be used to perform simulations of the projected order to determine the impact on the recycling wastewater solution. Recycled effluent and its injection into anaerobic lagoons is a process and a new experience in Morocco. The simulation results of this new principle are quite promising and may thus constituted a platform for future projects of sewage treatment plants on the one hand and for projects and solutions to reduce odors from anaerobic lagoons on the other hand. It should be noted that it was very difficult to choose the parameters used as input data for modeling anaerobic lagoons.

scholarly journals Wastewater Treatment Methods and Sewage Treatment Facilities in Almaty, Kazakhstan

2022 ◽  
Vol 23 (1) ◽  
pp. 240-251
Author(s):  
Kairat Ospanov ◽  
Erzhan Kuldeyev ◽  
Bagdaulet Kenzhaliyev ◽  
Anatoly Korotunov
Keyword(s):  
Wastewater Treatment ◽  
Sewage Treatment ◽  
Treatment Methods ◽  
Treatment Facilities

scholarly journals The structural and technical solution for precipitation moisture reducing

2019 ◽  
Vol 91 ◽  
pp. 04002
Author(s):  
Nazira Dzhumagulova ◽  
Vladimir Smetanin ◽  
Nguyen Dinh Dap
Keyword(s):  
New Technology ◽  
Sewage Treatment ◽  
High Capacity ◽  
Technical Solution ◽  
Solid Domestic Waste ◽  
Major Drawback ◽  
Sewage Treatment Plants ◽  
Urban Sewage ◽  
Treatment Facilities ◽  
The Will

One of the main problems in Russia is an acute shortage of free land for the disposal of solid domestic waste and sewage sludge. The treatment and removal of precipitation is a major problem in wastewater treatment. Urban sewage treatment plants were built on model projects in the 1970s, in which natural dehydration on silt areas was provided. Sludge dehydration on silt areas of sewage treatment plants of medium and high capacity is impossible due to the lack of free land areas. The major drawback of this method is the rejection of significant land areas, contamination of the geo-environment, the release of pollutants into the air, as well as the loss of land resources. In sludge processing and utilization, it is necessary to achieve minimum damage to the environment and to increase the possibility of using it on behalf of the national economy. The adoption of new technology and processing of sediments allowed to reduce the initial amount of precipitation by 4 times and to reduce the humidity from 97% to 83%, the amount of sludge formed at the treatment facilities will decrease by 6 times (from 300 m3/day to 50 m3/day) as a result of dehydration of the filter presses, the will be a reduction in the surface concentrations of pollutants in the atmosphere from 5,4 tons per year to 2,9 tons per year.

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