THE INTENSIFICATION OF THE PROCESS OF SLUDGE DEWATERING OF URBAN SEWAGE

2018 ◽  
Vol 8 (2) ◽  
pp. 15-19
Author(s):  
Svetlana A. POGREBNYAK ◽  
Alevtina F. KOLOVA ◽  
Tatyana Ya. PAZENKO
Keyword(s):  
Sewage Treatment ◽  
Wastewater Sludge ◽  
Urban Wastewater ◽  
Sludge Dewatering ◽  
Urban Sewage ◽  
Effi Ciency ◽  
Treatment Facilities ◽  
The Right ◽  
Pollute Groundwater ◽  
Selection Of

Urban wastewater sludge is highly humid, large and poorly dehydrated. Dehydration of sludge in natural conditions has a number of shortcomings: low effi ciency, sludge areas require huge land areas, worsen the ecological situation, pollute groundwater, soil, etc. One way to eliminate the problem and improve the effi ciency of sludge dewatering in urban wastewater is to switch to mechanical dehydration using fl occulants. The work is devoted to the selection of the most eff ective fl occulant and was carried out on the natural sediments of the right-bank treatment facilities in Krasnoyarsk and the sewage treatment plants in the sett lement of Emelyanovo. The experiment showed that fl occulants Praestol 851BC and Zetag 7485 at a dose of 3 kg / t dry matt er of the precipitate have the greatest eff ectiveness.

Life Cycle Assessment of Urban Wastewater Treatment

2014 ◽  
Vol 535 ◽  
pp. 346-349
Author(s):  
Mei Wang ◽  
Ming Yang ◽  
Jun Liu ◽  
Jian Fen Li
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Wastewater Treatment Plant ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Urban Wastewater ◽  
Urban Sewage ◽  
Urban Wastewater Treatment ◽  
Whole Life Cycle

Effect and benefits of a product or service could be analyzed and evaluated by life cycle assessment during the whole life cycle. Urban sewage treatment plants could improve and control urban water pollution escalating, but it also had certain harm to environment. Effect and benefits of urban wastewater treatment plant A and B were analyzed and evaluated, 13 factors were selected, and comprehensive benefits were researched quantificationally using the method of analytic hierarchy process. It found that urban wastewater treatment plant A who applied A/O process had better benefits than urban wastewater treatment plant B who applied BIOLAK process.

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.

INPROVEMENT OF INDUSTRIAL WASTES CLEARING ON BIOLOGICAL TREATMENT PLANTS

2014 ◽  
Vol 4 (2) ◽  
pp. 42-48
Author(s):  
Alexander Viktorovich ANTSIFEROV ◽  
Vladimir Mikhaylovich FILENKOV
Keyword(s):  
Industrial Waste ◽  
Biological Treatment ◽  
Sewage Treatment ◽  
Industrial Wastes ◽  
Biological Wastewater Treatment ◽  
Industrial Waste Water ◽  
Active Sludge ◽  
Effi Ciency ◽  
Prokaryotic Microorganisms ◽  
Selection Of

The aim of this research is the selection of the consortium in aerobic conditions with the help of active sludge, enriched the culture of prokaryotic microorganisms, for increase of degree of biological wastewater treatment. The dependence of the viability of microorganisms in case of emergency discharges of industrial waste water is presented. The comparative analysis of the effi ciency of sewage treatment with usual and enriched active sludge is done.

Hong Kong Sludge Treatment Facilities

2010 ◽  
Vol 5 (2) ◽  
Author(s):  
Echo Leong ◽  
Alex Kwan ◽  
Priscilla Yuen
Keyword(s):  
Hong Kong ◽  
Sewage Treatment ◽  
Treatment Technology ◽  
Sludge Treatment ◽  
Sludge Disposal ◽  
Design Build ◽  
Treatment Facilities ◽  
Dewatered Sewage Sludge ◽  
Fluidized Bed Incineration ◽  
Selection Of

At present, all dewatered sewage sludge generated by sewage treatment works (STW) is disposed of at landfills. This current practice of sludge disposal at landfill is not sustainable from both environmental and technical perspectives. The Hong Kong sludge contains high content of chloride due to use of seawater flushing in most of the Hong Kong areas and Hong Kong is a densely populated city. This unique condition has limited its selection of the alternative sludge treatment technology. The Sludge Treatment Facilities (STF) adopting fluidized bed incineration technology is a sustainable alternative for sludge disposal in Hong Kong. The design capacity of the STF is 2000 wet tonnes per day. The STF will be implemented under a Design-Build-and-Operate contract arrangement with a contractual operation period of 15 years and is scheduled to be commissioned by 2012.

scholarly journals Zalety i wady kompostowania osadów ściekowych w porównaniu z termicznym ich spalaniem – studium przypadku

2017 ◽  
Vol 26 (1) ◽  
pp. 125-135 ◽  
Author(s):  
Beata Malczewska ◽  
Bartosz Jawecki ◽  
Sławomir Woźniak
Keyword(s):  
Sewage Sludge ◽  
Thermal Transformation ◽  
Sewage Treatment ◽  
Economic Problems ◽  
Urban Sewage ◽  
Sludge Disposal ◽  
Sewage Sludge Management ◽  
Territorial Government ◽  
Urban Sewage Sludge ◽  
The Right

New challenges for the territorial government in the field of urban sewage sludge oblige to limit it storage. Sewage sludge management is one of the most difficult environmental and economic problems. Therefore, it is important to choose the right technology for the sewage sludge disposal. The purpose of this article is an evaluation of applied disposal methods on sewage treatment sludge plant and comparison of this method (sewage sludge composting) with thermal transformation of sewage sludge. Study confi rms that, in the present case, the composting of sewage sludge is the most advantageous solution.

scholarly journals Retechnologization of biological sewage water treatment facilities using mathematical modelling

2021 ◽  
Vol 274 ◽  
pp. 08012
Author(s):  
Liliya Khisameeva ◽  
Runar Abitov ◽  
Ramis Alimov
Keyword(s):  
Water Treatment ◽  
Sewage Treatment ◽  
Sewage Water ◽  
Improve Energy Efficiency ◽  
Treated Sewage ◽  
Treatment Facilities ◽  
Sewage Water Treatment ◽  
The Cost ◽  
Biological Treatment System ◽  
Selection Of

The efficiency of sewage treatment plants is an urgent problem of the designed and operating stations. In modern conditions, efficiency is understood as the operation of facilities in which operating costs are minimized, facilities provide standard cleaning, and the company implements measures to modernize and improve energy efficiency and trouble-free operation. The article deals with the comparative analysis and selection of the most optimal scheme of biological sewage water treatment of existing sewage water treatment plants. The indicators of the efficiency of functioning and permissible loads on treatment facilities in the design of aeration tanks for biological sewage water treatment are determined. The results served as the basis for the creation of a mathematical model, with the help of which it is possible to calculate the parameters of the biological treatment system and optimize the process of biological sewage water treatment at existing treatment facilities. Mathematical modeling allows you to reduce the cost of designing and operating treatment facilities, to guarantee the degree of treatment in accordance with the requirements and standards for the discharge of treated sewage water into a reservoir for fisheries purposes.

GEOECOLOGICAL ASSESSMENT OF SUITABILITY OF URBAN WASTEWATER SLUDGE FOR VARIOUS USES (ON THE EXAMPLE OF BREST REGION)

2021 ◽  
pp. 93-117
Author(s):  
Ekaterina N. Basalai
Keyword(s):  
Legal Regulation ◽  
Wastewater Sludge ◽  
Organic Fertilizers ◽  
Urban Wastewater ◽  
Maximum Permissible Concentrations ◽  
Disturbed Land ◽  
Solid Municipal Waste ◽  
The Usa ◽  
Treatment Facilities ◽  
High Concentrations

The article considers the results of studies of the composition and properties of urban wastewater sludge (UWWS) of treatment facilities in 9 different cities of Brest region in three groups of indicators: agrochemical, microbiological, and heavy metal content. A comparison of the data obtained for UWWS with similar indicators for local soils, literature data on the properties of UWWS, comparison with the regulatory requirements for UWWS in the Russian Federation, the EU, the USA, etc. is presented. Shown that with the high fertilizing potential of UWWS in cities of Brest region, due to high content of organic and nutrient substances (nitrogen, phosphorus, potassium), the use of UWWS in agriculture is limited by its microbiological contamination and high concentrations of heavy metals (zinc, copper, nickel, chromium), exceeding maximum permissible concentrations established by the requirements for UWWS in the Russian Federation and other countries. Based on the results obtained and the review given in the article about the ways of handling UWWS in different countries of the world, an assessment of the suitability of UWWS in cities of Brest region and Belarus as a whole for various types of use is given. With insufficient development of regulatory and legal regulation in the field of the management of UWWS, the most acceptable methods for the conditions of Belarus for the management of UWWS in the medium term are their use for the reclamation of disturbed land, as an insulating layer in landfills of solid municipal waste, in urban and forestry (in floriculture, in parks, squares, nurseries, etc.), and also anaerobic digestion with the production of organic fertilizers and energy.

The Analysis of The Urban Sewage Treatment Equipment Update Timing Based on Economic Life

2013 ◽  
Vol 838-841 ◽  
pp. 2561-2565
Author(s):  
Chun Jie Wang ◽  
Zhi Man Zhao ◽  
Xiao Mei Zhang
Keyword(s):  
Wastewater Treatment ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Economic Life ◽  
Urban Wastewater ◽  
Urban Sewage ◽  
Treatment Equipment ◽  
Life Analysis ◽  
Urban Wastewater Treatment ◽  
Cost Factors

Choose an appropriate occasion for aeration equipment update, is an important problem faced by the wastewater treatment plant. This paper discussed the update of urban wastewater treatment equipment in the aeration equipment by economic life analysis methods, proposed a mathematical model and solving method of updating strategy,which is involved in a variety of cost factors and universal optimal,and is verified with examples.

PROBLEM ASPECTS OF THE IMPLEMENTATION OF CRIMINAL PROCEDURAL NORMS OF PROTECTION OF THE VICTIMS FROM CRIME

2020 ◽  
pp. 72-76
Author(s):  
Яна Валерьевна Самиулина
Keyword(s):  
Preventive Measure ◽  
Criminal Procedure ◽  
Legal Rights ◽  
Criminal Proceedings ◽  
Effective Mechanism ◽  
The Russian Federation ◽  
The Individual ◽  
The Right ◽  
To Receive ◽  
Selection Of

В настоящей статье предпринята попытка исследовать отдельные проблемные аспекты института потерпевшего в российском уголовном процессе. В этих целях подвергнуты анализу правовые нормы, регламентирующие его процессуальный статус. Раскрываются отдельные пробелы уголовно-процессуального законодательства в сфере защиты законных прав и интересов потерпевшего. Автор акцентирует внимание на том, что совершенствование уголовно-процессуального законодательства в части расширения правомочий потерпевшего по отстаиванию своих нарушенных преступлением прав следует продолжить. На основании проведенного исследования действующего законодательства в части регламентации прав потерпевшего от преступления предлагается расширить перечень получаемых им копий постановлений, указанных в п. 13 ч. 2 ст. 42 УПК РФ. Автор предлагает включить в перечень указанной законодательной нормы право получения потерпевшим копии постановления об избрании конкретного вида меры пресечения, избранного в отношении подозреваемого (обвиняемого). Для создания действенного механизма защиты интересов потерпевших от преступления юридических лиц предлагаем ч. 9 ст. 42 УПК РФ изложить в следующей редакции: «в случае признания потерпевшим юридического лица его процессуальное право в уголовном процессе осуществляет представляющий его профессиональный адвокат». This article attempts to investigate certain problematic aspects of the institution of the victim in the Russian criminal process. For this purpose, analyzed the individual norms governing his procedural status. Separate gaps of the criminal procedure legislation in the sphere of protection of the legal rights and interests of the victim are disclosed. The author emphasizes that the improvement of the criminal procedure legislation in terms of the extension of the victim’s authority to defend his rights violated by the crime should be continued. On the basis of the study of the current legislation regarding the regulation of the rights of the victim of a crime, it is proposed to expand the list of decisions received by him, referred to in paragraph 13, part 2 of article 42 Code of Criminal Procedure. The author proposes to include in the list of the indicated legislative norm the right to receive the victim a copy of the decision on the selection of a specific type of preventive measure, selected in relation to the suspect (accused). To create an effective mechanism for protecting the interests of legal entities victims of a crime, we offer part 9 of art. 42 of the Code of Criminal Procedure of the Russian Federation shall be reworded as follows: «if a legal entity is recognized as a victim, his procedural right in criminal proceedings is exercised by the professional lawyer representing him».

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