Introduction of membrane technologies at the wastewater treatment facilities of Molodezhnoe settlement

2021 ◽  
pp. 26-32
Author(s):  
В.А. Кузьмин ◽  
О.А. Ломинога ◽  
Е.Г. Колоскова
Keyword(s):  
Wastewater Treatment ◽  
Membrane Filtration ◽  
Colloidal Particles ◽  
High Efficiency ◽  
Treatment Plant ◽  
Phosphorus Compounds ◽  
Design Parameters ◽  
Aeration Tank ◽  
Membrane Unit ◽  
Treatment Facilities

Представлен опыт внедрения технологии мембранной очистки сточных вод на канализационных очистных сооружениях поселка Молодежное (Санкт-Петербург). В состав очистных сооружений входят: главная насосная станция, комбинированная установка механической очистки сточных вод, усреднитель, биореактор (аэротенк, работающий по технологии нитри-денитрификации) для глубокого удаления азота, мембранный биореактор, установка ультрафиолетового обеззараживания сточных вод, шнековый пресс обезвоживания избыточного активного ила, станция дозирования реагента сульфата алюминия для химического удаления фосфорных соединений (фосфатов). Очищенные и обеззараженные сточные воды сбрасываются через глубоководный выпуск в Финский залив. Мембранная фильтрация обеспечивает глубокую доочистку от мелкодисперсных взвешенных веществ и коллоидных частиц. Для достижения стабильного качества очищенных сточных вод при эксплуатации мембранных модулей необходимо строго выполнять следующие требования: высокая эффективность удаления отбросов на решетках; предотвращение попадания посторонних включений в биореактор после механической очистки; обеспечение высокой концентрации ила в аэротенке и мембранном блоке; своевременная химическая промывка мембран. В ходе опытной эксплуатации очистных сооружений пос. Молодежное была отмечена неравномерность нагрузки как гидравлической, так и по загрязняющим веществам. За период эксплуатации были отлажены режимы работы станции с учетом неравномерности характеристик поступающего стока с выходом на проектные параметры технологической линии очистки сточных вод. The experience of introducing membrane wastewater treatment technology at the wastewater treatment facilities in Molodezhnoe settlement (St. Petersburg) is presented. The treatment facilities include: a main pumping station, a combined mechanical wastewater treatment plant, a wastewater regulator, a bioreactor (aeration tank operating using nitri-denitrification technology) for enhanced nitrogen removal, a membrane bioreactor, an ultraviolet effluent disinfection unit, a screw press for excess activated sludge dewatering, aluminum sulfate dosing unit for the chemical removal of phosphorus compounds (phosphates). The effluent after disinfection is discharged through a deep-water outlet into the Gulf of Finland. Membrane filtration provides for the enhanced tertiary treatment to remove fine suspended solids and colloidal particles. To achieve a stable quality of the effluent during the operation of membrane modules, the following requirements shall be strictly met: the high efficiency of screenings removal; prevention of the ingress of foreign particles into the bioreactor after mechanical treatment; high concentration of sludge in the aeration tank and membrane unit; timely chemical washing of the membranes. During the trial operation of the treatment facilities in Molodezhnoe, the irregular hydraulic and pollution loading was noted. During the operation period the operating modes of the facilities were adjusted with account of the irregular characteristics of the incoming flow while achieving the design parameters of the process line of wastewater treatment.

scholarly journals Efficiency of municipal wastewater treatment with membrane bioreactor

2019 ◽  
Vol 41 (1) ◽  
pp. 47-54
Author(s):  
Magdalena Domańska ◽  
Anna Boral ◽  
Kamila Hamal ◽  
Magdalena Kuśnierz ◽  
Janusz Łomotowski ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Membrane Filtration ◽  
Municipal Wastewater ◽  
High Efficiency ◽  
Biological Membrane ◽  
Treatment Plant ◽  
Membrane Reactors ◽  
Quality Analysis ◽  
Treated Wastewater ◽  
Municipal Wastewater Treatment

AbstractThe increasingly stringent requirements for wastewater treatment enforce the adoption of technologies that reduce pollution and minimize waste production. By combining the typical activated sludge process with membrane filtration, biological membrane reactors (MBR) offer great technological potential in this respect. The paper presents the principles and effectiveness of using an MBR at the Głogów Małopolski operation. Physicochemical tests of raw and treated wastewater as well as microscopic analyses with the use of the FISH (fluorescence in situ hybridization) method were carried out. Moreover, the level of electric energy consumption during the operation of the wastewater treatment plant and problems related to fouling were also discussed. A wastewater quality analysis confirmed the high efficiency of removing organic impurities (on average 96% in case of BOD5 and 94% in case of COD) and suspension (on average 93%).

scholarly journals Assessment of wastewater treatment plant effluent impact on the ecosystem of the river on the basis of the quantitative development of ciliated protozoa characteristic of the aeration tank

2020 ◽  
Author(s):  
R. Babko ◽  
V. Pliashechnyk ◽  
T. Kuzmina ◽  
Y. Danko ◽  
J. Szulżyk-Cieplak ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Waste Treatment ◽  
Treatment Plant ◽  
Aeration Tank ◽  
Quantitative Characteristics ◽  
Quantitative Development ◽  
Treatment Facilities ◽  
The Impact

Abstract The work is devoted to the task of simplifying the assessment of the effect of effluents from treatment facilities on the river hydrobiocenosis. The studies were carried out on the mountain river Uzh (Uzhgorod, Ukraine). Our approach to assessing the impact of waste treatment facilities on the river receiver is based on the estimate of the similarity of species composition and quantitative characteristics of populations of organisms from the aerotank and from the river. It is shown that the quantitative development of populations of species of ciliates from the aeration tank is a good indicator for assessing the degradation of organic matter coming with wastewater. The use of qualitative and quantitative characteristics of the protozoa from the wastewater treatment plant as a criterion for assessing the quality of the environment in the area of wastewater discharge showed their representativeness and effectiveness. The use of a limited number of species makes it possible to conduct an express assessment of the effect of effluents on receiving reservoirs for specialists working with activated sludge in the laboratories of treatment facilities.

Long-term operation of a domestic wastewater treatment plant with membrane filtration

2008 ◽  
Vol 62 (5) ◽  
Author(s):  
Lucia Dančová ◽  
Igor Bodík ◽  
Andrea Blšťáková ◽  
Zuzana Jakubčová ◽  
Miloslav Drtil
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Membrane Filtration ◽  
Municipal Wastewater ◽  
High Efficiency ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Municipal Wastewater Treatment ◽  
Term Operation ◽  
Domestic Wastewater Treatment

AbstractPossibilities of membrane technology and the use of membrane processes in wastewater treatment were investigated. The main focus was the monitoring of the starting phase of a domestic wastewater treatment plant. Experimental part of the study was realized at the municipal wastewater treatment plant (WWTP) Devínska Nová Ves — Bratislava during the period from February 2005 to September 2006. The system was stable without any external chemical treatment of the membrane modules and the permeate quality was very high. Observed decrease of COD and BOD5 values ranged between 91 % and 98 %. The process of nitrification was very successful considering its high efficiency (> 95 %).

scholarly journals INNOVATIVE METHOD OF NITRIFICATION AND DENITRIFICATION ON THE EXAMPLE OF WASTEWATER TREATMENT PLANT OF KOLOMYIA

2021 ◽  
Vol 2021 (2) ◽  
pp. 7-16
Author(s):  
Ihor Popadiuk ◽  
◽  
Ivan Matlai ◽  
Bohdan Pitsyshyn ◽  
Taras Sydor ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Phosphorus Compounds ◽  
Biological Wastewater Treatment ◽  
The European Union ◽  
Nitrogen And Phosphorus ◽  
Oxygen Conditions ◽  
Treatment Facilities ◽  
Degree Of Purification

The article is devoted to the unsatisfactory operation of biological wastewater treatment plants. At present in Ukraine there are no developments of equipment and devices to ensure the operation of treatment facilities using the technology of nitridenitrification of deep wastewater treatment from nitrogen and phosphorus compounds. The analysis of the equipment of biological treatment systems - nitri treatment plant - denitrifier, clarifier tanks is carried out. At the same time, the standards of the degree of purification of both Ukraine and the European Union were taken into account. On the example of treatment facilities in Kolomyia, Ivano-Frankovsk region, modern schemes of biological wastewater treatment for the removal of nitrogen and phosphorus have been proposed, namely, the re-equipment of single-corridor aerotanks into bioreactors of nitridenitrifiers by creating zones with different oxygen conditions in their volume.

scholarly journals An Overview on Major Design Constraints, Impact and Challenges for a Conventional Wastewater Treatment Design

2020 ◽  
Vol 9 (1) ◽  
pp. 7-16
Keyword(s):  
Wastewater Treatment ◽  
Analytical Calculation ◽  
Treatment Plant ◽  
Field Application ◽  
Design Parameters ◽  
Plant Design ◽  
Political Commitment ◽  
Design Constraints ◽  
Technical Requirements ◽  
Set Up

The conventional wastewater (WW) treatment plant includes physical, chemical, and biological treatment processes that can protect the receiving water bodies from water pollution. The common design constraints, challenges as well as environmental impact would make the wastewater treatment plant’s (WWTP) construction and operation more complex and demanding tasks. Major project constraints for WW plant design are economic, accessibility, fulfilling technical requirements, institutional set-up, health and environment, personnel capacity, and political commitment etc. Design methodology adopted in the current study included project location, unit selections, the design capacity, design period as well as proximity to the population and layout plan. The present manuscript discussed briefly about effluent quality requirements, design issues, environmental impacts, details, and safety concerns. It also highlighted the necessary flexibility to carry out satisfactorily within the desired range of influent WW characteristics and flows. In the present study, every step of the design was verified with Environmental Regulations and suggested to overcome all constraints while designing WWTPs so that standard operational code for the specific region could be implemented to achieve the best treatment performance. The results obtained from analytical calculation were optimized to achieve the best design parameters for field application. The optimized values also reduce the construction and operation cost during the field application.

Stages of launching a biological treatment plant at the wastewater treatment facilities with dosing easily oxidable organic matter

2021 ◽  
pp. 38-46
Author(s):  
В.А. Кондрашев ◽  
С.Г. Метелица
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Commercial Fishing ◽  
Effluent Quality ◽  
Start Up ◽  
Numerous Experimental Data ◽  
Treatment Facilities ◽  
Equipment Configuration

Рассмотрены вопросы, связанные с проведением пусконаладочных работ биоблока станции очистки хозяйственно-бытовых и близких к ним по составу сточных вод при пробном пуске в эксплуатацию очистных сооружений. Подробно рассмотрены этапы пусконаладочных работ биоблока очистных сооружений с «затравкой» активным илом из действующих биологических очистных сооружений и с дозировкой легкоокисляемой органики. Описан состав оборудования станции КОС-9 производства «Гермес Групп». Рассмотрены все этапы пусконаладочных работ биоблока на примере запуска очистных сооружений КОС-9 с привлечением многочисленных опытных данных. Определены периоды этапов пусконаладки биоблока. Приведены проблемы наладки биоблока и пути их решения с достижением требуемого результата. Технология, используемая на станции, обеспечивает очистку сточных вод, соответствующую требованиям, предъявляемым к выпуску очищенных стоков в водоем рыбохозяйственного значения. Issues related to commissioning a biological treatment plant at the facilities for household and similar in composition wastewater treatment during the trial start of the treatment facilities are considered. The stages of commissioning a biological treatment plant at the wastewater treatment facilities with «inoculating» activated sludge from the operating biological treatment facilities and with dosing easily oxidable organic matter are considered in detail. The equipment configuration of the WWTP-9 produced by Germes Group is described. All stages of the biological treatment plant commissioning are considered through the example of the start-up of WWTP-9 with the use of numerous experimental data. The periods of biological treatment plant commissioning stages have been determined. The problems of adjusting the biological treatment plant and the ways of their elimination to achieve the required result are presented. The technology used at the WWT facilities provides for the effluent quality that meets the requirements for the discharge into a water body of commercial fishing importance.

Choice of the efficient flow diagram of biological wastewater treatment at municipal wastewater treatment plants

2021 ◽  
Vol 6 (4) ◽  
pp. 244-250
Author(s):  
Serhii Protsenko ◽  
◽  
Mykola Kizyeyev ◽  
Olha Novytska ◽  
◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
High Efficiency ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Dynamic Modelling ◽  
Flow Diagram ◽  
Biological Wastewater Treatment ◽  
Municipal Wastewater Treatment ◽  
Residual Content

The possibility of increasing the efficiency of municipal wastewater treatment plant (WWTP) operation by changing the flow diagram of biological wastewater treatment in aeration tanks at minimum expenses for their reconstruction is shown in the paper on the example of one of the regional centres of Ukraine. The technology of nitri-denitrification of wastewater according to the flow diagram of the two-stage modified Ludzak-Ettinger process is offered for the considered conditions. The distribution of wastewater flows and internal nitrate recycling between the individual stages of this flow diagram has been optimized in order to minimize the residual content of total nitrogen in the treated effluents. Computer dynamic modelling of biochemical processes has proved the high efficiency and reliability of the flow diagram proposed by the authors.

Recycling of water treatment sludges in municipal wastewater treatment plants – a practical example

2008 ◽  
Vol 3 (1) ◽  
Author(s):  
K. Klinksieg ◽  
T. Dockhorn ◽  
N. Dichtl
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Wastewater Treatment Plant ◽  
Iron Hydroxide ◽  
Settling Tank ◽  
Treatment Plant ◽  
Full Scale ◽  
Aeration Tank ◽  
Second Phase ◽  
Precipitation Efficiency

Full-scale and lab-scale research experiments were conducted to determine the phosphorous precipitation efficiency of iron hydroxide sludge from drinking water treatment. During full-scale investigations at a wastewater treatment plant, ferric sludge was added to the inflow of the primary settling tank in a first experimental phase and to the inflow of the aeration tank in a second phase. In the outflow of the mechanical stage and in the outflow of the biological stage, a reduction of the PO4-P concentrations could be observed. The concentration of COD, the SVI and the filament abundance were not changed significantly by adding the ferric sludge to the wastewater treatment plant. In lab tests, improved precipitation efficiency of the ferric sludge could be achieved by using anaerobic conditions and acid pulping. The research showed that the wastewater treatment process can benefit from the reuse of ferric sludge from drinking waterworks and that this also presents an inexpensive recycling option for these sludges.

scholarly journals Effectiveness of wastewater treatment from the fruit and vegetable industry in the vertical flow-type constructed wetlands

2018 ◽  
Vol 44 ◽  
pp. 00149 ◽  
Author(s):  
Monika Puchlik
Keyword(s):  
Wastewater Treatment ◽  
Organic Compounds ◽  
Constructed Wetlands ◽  
Total Nitrogen ◽  
Organic Substance ◽  
Treatment Plant ◽  
Phosphorus Compounds ◽  
Vertical Flow ◽  
Fruit And Vegetable ◽  
Nitrogen And Phosphorus

The purpose of the work was to determine the effectiveness of wastewater treatment from the fruit and vegetable industry in constructed wetlands supported by a bio-preparation. An increase in the efficiency of organic substance purification expressed as BOD5 and COD by 8% in deposit with the addition of bio-preparation in relation to the control bed (without the addition of bio-preparation), was found. The efficiency of the total suspension, total nitrogen and total phosphorus increased respectively by 19.5%, 10%, and 27% in relation to the bed without addition of bio-preparation. Constructed wetlands treatment plant ensures high removal of organic compounds expressed as BOD5 and COD, as well as guarantees reduction in the concentration of nitrogen and phosphorus compounds.

Organic colloids and their influence on low-pressure membrane filtration

2004 ◽  
Vol 50 (12) ◽  
pp. 311-316 ◽  
Author(s):  
C. Laabs ◽  
G. Amy ◽  
M. Jekel
Keyword(s):  
Wastewater Treatment ◽  
Glass Fiber ◽  
Membrane Filtration ◽  
Membrane Surface ◽  
Treatment Plant ◽  
Low Pressure ◽  
Colloidal Solutions ◽  
Cake Layer ◽  
Stirred Cell ◽  
Macromolecular Component

Wastewater treatment by low-pressure membrane filtration (MF and UF) is affected to a large extent by macromolecules and colloids. In order to investigate the influence of organic colloids on the membrane filtration process, colloids were isolated from a wastewater treatment plant effluent using a rotaryevaporation pre-concentration step followed by dialysis. Stirred cell tests were carried out using redissolved colloids, with and without additional glass fiber filtration. After constant pressure membrane filtration of 190 L/m2, the initial flux had declined by 50% for colloids > 6-8 kD (glass fiber filtered) with a hydrophilic MF membrane and for colloids >12-14 kD (glass fiber filtered) with a hydrophobic MF membrane. For the non-filtered colloidal solutions, the flux decline was even steeper with the flux being below 10% of the initial flux after 190 L/m2 were passed through the membranes. As with larger particles, colloids form a filtration cake layer on top of the membrane surface when used as isolates without prior filtration. This filtration cake is easily removed during backwashing. However, polysaccharides as a macromolecular component of the colloid isolate cause severe fouling by the formation of a gel layer on the membrane surface that is difficult to remove completely.

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