scholarly journals BIOLOGICAL WASTEWATER TREATMENT IN CONTEXT OF CIRCULAR ECONOMY

2021 ◽  
Vol 29 (1) ◽  
pp. 3-10
Author(s):  
Yuliia Dzihora ◽  
Hennadiy Stolyarenko
Keyword(s):  
Wastewater Treatment ◽  
Circular Economy ◽  
Biological Treatment ◽  
Membrane Separation ◽  
Biogas Production ◽  
Human Life ◽  
Holistic Approach ◽  
Long Time ◽  
Treatment Facilities ◽  
Resources Exploitation

With the beginning of Anthropocene epoch, nature is facing a lot of environmental problems that drastically increased in the last century. On the current rate of resource consumption, soon nature will lose the ability for self-restoration. In order to avoid inevitable consequences of resources exploitation, new approaches should be developed in all areas of human life. Linear economy concepts that were utilized for a long time and were based on use and disposal of each separate resource depending on the purpose is not sufficient anymore. More holistic approach should be applied to overcome the challenges that we are facing now. Application of circular economy concepts for wastewater treatment facilities has a great potential to enhance sustainability of water management. This paper will focus on circular economy concepts applied for modern pilot installation that combines biological treatment and membrane separation and discusses the potential for the full-scale implementation. Since, pilot plant was operated without any chemicals addition it eases the use of the waste sludge that is received as a by-product for different purposes as agricultural application and biogas production.

More biogas please! – Lessons from around the Globe

2012 ◽  
Vol 7 (4) ◽  
Author(s):  
C. I. Staib ◽  
C. Newbery ◽  
R. Ratcliff ◽  
J. Ord ◽  
A. Umble
Keyword(s):  
Decision Making ◽  
Wastewater Treatment ◽  
Anaerobic Digestion ◽  
Success Factors ◽  
Biogas Production ◽  
Holistic Approach ◽  
Framework Design ◽  
Treatment Facilities ◽  
Decision Making Framework

This paper discusses the range of options available to increase biogas production in wastewater treatment facilities incorporating anaerobic digestion. Based on a review of global applications, the key lessons and success factors are detailed. This information fits into an overall decision making framework design to ensure a holistic approach to investment in increasing biogas production is taken.

scholarly journals ANALYSIS OF PHYSICOCHEMICAL WASTEWATER TREATMENT IN ARCTIC ZONES

2020 ◽  
Vol 22 (1) ◽  
pp. 152-163
Author(s):  
E. I. Vialkova ◽  
E. S. Glushchenko ◽  
T. S. Velizhanina ◽  
E. Y. Osipova
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Wastewater Discharge ◽  
Total Change ◽  
Climatic Zones ◽  
Physicochemical Treatment ◽  
Treatment Facilities ◽  
The Russian Federation ◽  
Sewage Systems ◽  
Design Construction

The large part of the Russian Federation locates in arctic and subarctic climatic zones, which determine the specificity of design, construction and operation of sewage systems of these regions. Nowadays, the most part of small Arctic towns has no wastewater treatment facilities, while the available biological treatment facilities do not work properly. An alternative way is physicochemical treatment, which is more resistant to severe climate and volley wastewater discharge than biological treatment. The paper presents the research results of total change the biological into physicochemical treatment. The main stages of such a treatment include coagulation, filtration, oxidation and two-stage filtration (mechanical and absorption). The experiments show a 90.8% decrease in the concentration of chemical oxygen and a 74% and 82.5% decrease in nitrates and ammonium.

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.

scholarly journals The present situation and trends of wastewater treatment in small settlements and rural areas of Lithuania

2019 ◽  
pp. 243-250
Author(s):  
Regimantas Dauknys
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Surface Waters ◽  
Rural Areas ◽  
Biological Treatment ◽  
Wastewater Treatment Plants ◽  
Present Situation ◽  
Treatment Facilities ◽  
Biological Filters ◽  
Activated Sludge Systems

This article presents the wastewater treatment in small settlements and rural areas ofLithuania, including descriptions of capacity and loading of wastewater treatment plants(WWTPs), types of treatment facilities, and development trends of biological treatmentfacilities. In 2000 Lithuania had 597 WWTPs with capacity up to 1000 m3/d, 95% of them arethe biological treatment plants. Today the most of these WWTPs are unloaded due to thetendency to centralise wastewater treatment in rural areas of Lithuania that were in the eightand ninth decades.In small settlements and rural areas of Lithuania the aeration facilities are predominant. In theeight and ninth decades practically only the activated sludge systems were built. The situationbegan to change in the last decade of the last century: the biological filters and soil filtrationfacilities with discharge into surface waters were applied more frequently, so the building ofaeration facilities started to decrease.

The Comprehensive Test for Geothermal Tail-Water Disposal

2011 ◽  
Vol 403-408 ◽  
pp. 4522-4527
Author(s):  
Zong Jun Gao ◽  
Jia Guo Ren ◽  
Jia Liang Li ◽  
Hong Cao ◽  
Qian Qian Wu ◽  
...  
Keyword(s):  
Membrane Separation ◽  
Groundwater Resources ◽  
Mineral Resources ◽  
Sedimentary Basins ◽  
Chemical Plants ◽  
Long Time ◽  
Layered Porous Media ◽  
Tail Water ◽  
Exchange Resins ◽  
Resources Exploitation

Geothermal reservoirs and groundwater resources in layered porous media in large sedimentary basins have enormous exploitation potential because of their extensive distribution, great quantity, and feasible temperatures and drilling depths. The discharge of geothermal wastewater (i.e. tail-water) on the surface is a serious environmental issue because of its high salinity content, so the Bureau of Geology Exploration and Mineral Resources Exploitation in Shandong Province, China called for the study of the disposal technique of the geothermal tail-water. The disposal test process is as follows: take the waste of geothermal water to make physics-chemistry preparative disposal; filtration with manganese-sand set and/or double-medium equipment; filtration with ion exchange resins; nanofiltration membrane separation; and reverse osmosis separation. After separation, the cheap, clean water can be used as a material for chemical plants. However, in the case of deeply embedded geothermal groundwater resources, connate water(buried water), or bad recharge conditions, must be dried up for a long time exploitation, causing ground depression. Therefore, it is concluded that systems utilizing reinjection, i.e. closed-circuit cycle mode injection, in sandstone reservoirs are ideal for the realization of sustainable exploitation of the geothermal groundwater resources with favorable environmental conditions on the surface.

Operational Indicators to Manage the Replacement of Electromechanical Equipment in Wastewater Treatment Facilities

2021 ◽  
pp. 1-20
Author(s):  
Vicent Hernández-Chover ◽  
Lledó Castellet-Viciano ◽  
Francesc Hernández-Sancho
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Wastewater Treatment Plants ◽  
Replacement Policy ◽  
Optimal Management ◽  
Specific Domain ◽  
Different Types ◽  
Acquisition Costs ◽  
Treatment Facilities ◽  
Electromechanical Equipment

Optimal management is usually at the top of the concerns in the context of water infrastructures. In the specific domain of wastewater treatment plants (WWTPs), European Directive 91/271 established the need of implementing a biological treatment of wastewater leading to an intensive construction of WWTPs in several European countries, which now present important problems of maintenance. These facilities are composed of different types of assets, which should be managed efficiently in order to optimize the performance of the processes as well as the maintenance and replacement costs of the equipment. In fact, the deterioration of these assets increases the operational risk and endangers the continuity of the service of these WWTPs. In this paper, the authors combine multicriteria methodologies (MCDM) and economic aspects of the equipment to define an appropriate technical–economical replacement policy. With the aim of developing a reference procedure in the wastewater sector, an approach has been made to blower pump, which is an equipment widely used in WWTPs to provide a continuous air flow to the reactor facilitating the elimination of organic matter and the nutrients contained in the wastewater. The proposal integrates aspects such as acquisition costs and corrective maintenance, interest rate, and amortization based on the condition of the equipment.

scholarly journals FENTON OXIDATION AS AN ALTERNATIVE TO BIOLOGICAL WASTEWATER TREATMENT

2020 ◽  
Author(s):  
T.M. Ganiev ◽  
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Biological Treatment ◽  
Fenton Oxidation ◽  
Biological Wastewater Treatment ◽  
Cleaning Method ◽  
Advantages And Disadvantages ◽  
Treatment Facilities ◽  
Oxidation Reactor

This article discusses the possibility of replacing biological treatment units with activated sludge with a Fenton oxidation reactor. The main advantages and disadvantages of this cleaning method are determined. A possible scheme for the implementation of the project of treatment facilities operating on the principle of Fenton oxidation is considered.

FEATURES OF THE START OF BIOLOGICAL WASTEWATER TREATMENT FACILITIES IN THE MODES OF NITRIFICATION AND DENITRIFICATION

2018 ◽  
Vol 8 (3) ◽  
pp. 55-61 ◽  
Author(s):  
Nikolay S. SERPOKRYLOV ◽  
Elena V. VILSON ◽  
Lidia A. DOLZHENKO ◽  
Maram Ali SAIYD
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Magnetic Treatment ◽  
Biological Wastewater Treatment ◽  
Biological Factors ◽  
Urban Wastewater ◽  
Enzyme Preparations ◽  
Treatment Facilities ◽  
Nitrification And Denitrification

The main methods of intensifi cation of biological wastewater treatment by chemical, physical and biological factors are considered. The expediency of using biotechnological methods during commissioning works on biological treatment facilities in the modes of nitrifi cation and denitrifi cation, based on the use of biologic-enzyme preparations, magnetic treatment and lighting, is substantiated The results of research for urban wastewater on the model installation of bioreactors in the mode of nitrifi cation and denitrifi cation are given.

Deep Wastewater Treatment with Excessively High Fat Content

2019 ◽  
Vol 23 (10) ◽  
pp. 34-38
Author(s):  
G.I. Zubareva
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Food Industry ◽  
Fat Content ◽  
Technological Scheme ◽  
High Fat ◽  
Treatment Facilities ◽  
Physicochemical Methods ◽  
Air Flotation

The qualitative and quantitative characteristics of highly concentrated fat-containing wastes of the food industry are given. The aggregate states of the presence of fat in wastewater are discussed, which determine the composition of treatment facilities in the technological scheme for the deep treatment of fat-containing effluents. The basic classical methods of wastewater treatment from fat are analyzed: mechanical, physicochemical (air flotation, electroflotation), as well as the method of deep wastewater treatment - biological treatment. It is shown that the traditional technological scheme of wastewater treatment from excessively high fat content does not ensure the quality of treated effluents to regulatory requirements. The prospects of anaerobic-aerobic technology for cleaning wastewater from food industry enterprises from excessively high fat concentrations as a method of deep post-treatment are discussed. The conclusion is drawn about the effectiveness of the combined technology for wastewater treatment with an excessively high fat content, based on the use of physicochemical methods (air flotation, electroflotation) and biological treatment (anaerobic-aerobic method).

Problems of purification of water objects against technogenic pollution

10.12737/3387 ◽  
2014 ◽  
Vol 2 (1) ◽  
pp. 32-37
Author(s):  
Татьяна Меркулова ◽  
Tatyana Merkulova ◽  
Александр Кравченко ◽  
Aleksandr Kravchenko
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
New Technology ◽  
Technogenic Pollution ◽  
Economic Problems ◽  
Treatment Facilities ◽  
Purification Of Water

The methods of wastewater treatment are described. The analysis of the biological treatment facilities and their comparison with other constructions cleaning are given. A new technology of dehydration of suspensions in the geotubes, which gets you closer to the adequate resolution of the stated article of ecological and economic problems, is proposed.

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