Perspectives of using microbiological technologies for elimination of foul odor from biological treatment facilities

2021 ◽  
Author(s):  
Alena Hlushen ◽  
◽  
Marharyta Chyrykava ◽  
Kiryl Hubchyk ◽  
◽  
...  
Keyword(s):  
Biological Treatment ◽  
Treatment Facilities ◽  
Foul Odor

scholarly journals Determination parameters of geothermal heat-exchangers for biological treatment facilities

2018 ◽  
pp. 61-69
Author(s):  
O. P. Chepak ◽  
◽  
V.K. Kostenko ◽  
O.L. Zavyalova ◽  
M.I. Tavrel ◽  
...  
Keyword(s):  
Heat Exchangers ◽  
Biological Treatment ◽  
Geothermal Heat ◽  
Treatment Facilities

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 Struvite Precipitation for Sustainable Recovery of Nitrogen and Phosphorus from Anaerobic Digestion Effluents of Swine Manure

2020 ◽  
Vol 12 (20) ◽  
pp. 8574 ◽  
Author(s):  
Hong-Duck Ryu ◽  
Do Young Lim ◽  
Sun-Jung Kim ◽  
Un-Il Baek ◽  
Eu Gene Chung ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Biological Treatment ◽  
Swine Manure ◽  
Molar Ratio ◽  
Optimal Conditions ◽  
Nitrogen And Phosphorus ◽  
Treatment Facilities ◽  
Struvite Precipitation ◽  
Major Factors ◽  
Sustainable Recovery

In this study, we propose the application of struvite precipitation for the sustainable recovery of nitrogen (N) and phosphorus (P) from anaerobic digestion (AD) effluents derived from swine manure. The optimal conditions for four major factors that affect the recovery of N and P were derived by conducting batch experiments on AD effluents obtained from four AD facilities. The optimal conditions were a pH of 10.0, NH4-N:Mg:PO4-P molar ratio of 1:1.4:1, mixing intensity of 240 s−1, and mixing duration of 2 min. Under these optimal conditions, the removal efficiencies of NH4-N and PO4-P were approximately 74% and 83%, respectively, whereas those of Cu and Zn were approximately 74% and 79%, respectively. Herein, a model for swine manure treatment that incorporates AD, struvite precipitation, and biological treatment processes is proposed. We applied this model to 85 public biological treatment facilities in South Korea and recovered 4722 and 51 tons/yr of NH4-N and PO4-P, respectively. The economic analysis of the proposed model’s performance predicts a lack of profitability due to the high cost of chemicals; however, this analysis does not consider the resulting protection of the hydrological environment. Field-scale studies should be conducted in future to prove the effectiveness of the model.

Реконструкция воздуходувной станции городских очистных канализационных сооружений г. Читы

2019 ◽  
pp. 50-53
Author(s):  
A.N. Iadrishchenskii ◽  
N. Filippova ◽  
K. Bulygin ◽  
G. Kolobova ◽  
A. Gordeichik ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Energy Savings ◽  
Automation System ◽  
Frequency Converters ◽  
Air Supply ◽  
Treatment Facilities ◽  
Air Blower ◽  
The City ◽  
Wastewater Biological Treatment ◽  
Sufficient Oxygen

Приводятся результаты реконструкции канализационных очистных сооружений г. Читы в части системы снабжения воздухом действующих секций аэротенков без замены воздуходувных агрегатов. Основная цель реконструкции экономия электроэнергии и автоматизация подачи воздуха в аэротенки при обеспечении достаточных концентраций кислорода в сооружениях биологической очистки сточных вод. Для изменения производительности нагнетателей в состав системы автоматики включены два высоковольтных преобразователя частоты по числу нагнетателей, находящихся в работе. Для регулирования подачи воздуха в секции аэротенков установлены восемь регулируемых затворов и восемь датчиков растворенного кислорода (по числу действующих секций). Экономия электроэнергии за четыре месяца эксплуатации составила порядка 16,4 от аналогичного периода прошлых лет.The results of the reconstruction of the wastewater treatment facilities in the city of Chita are presented with regard to the system of supplying air to the operating sections of the aeration tanks without replacing the air blower units. The main goal of the reconstruction was energy saving and automation of air supply to the aeration tanks while ensuring sufficient oxygen concentrations in the wastewater biological treatment facilities. To change the capacity of the air blowers the automation system includes two highvoltage frequency converters for the number of blowers in operation. To regulate the air supply eight regulated valves and eight dissolved oxygen sensors (for the number of operating sections) are installed in the sections of the aeration tanks. Energy savings over four months of operation amounted to about 16.4 compared to the same period of previous years.

scholarly journals Biodegradation of Sewage Wastewater Using Autochthonous Bacteria

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Purnima Dhall ◽  
Rita Kumar ◽  
Anil Kumar
Keyword(s):  
Biological Treatment ◽  
Suspended Solids ◽  
Bacillus Pumilus ◽  
Sewage Treatment ◽  
Oxygen Demand ◽  
Total Suspended Solids ◽  
Inoculum Size ◽  
Sewage Treatment Plants ◽  
Treatment Facilities ◽  
Autochthonous Bacteria

The performance of isolated designed consortia comprisingBacillus pumilus, Brevibacterium sp, and Pseudomonas aeruginosafor the treatment of sewage wastewater in terms of reduction in COD (chemical oxygen demand), BOD (biochemical oxygen demand) MLSS (mixed liquor suspended solids), and TSS (total suspended solids) was studied. Different parameters were optimized (inoculum size, agitation, and temperature) to achieve effective results in less period of time. The results obtained indicated that consortium in the ratio of 1 : 2 (effluent : biomass) at 200 rpm, 35°C is capable of effectively reducing the pollutional load of the sewage wastewaters, in terms of COD, BOD, TSS, and MLSS within the desired discharge limits, that is, 32 mg/L, 8 mg/L, 162 mg/L, and 190 mg/L. The use of such specific consortia can overcome the inefficiencies of the conventional biological treatment facilities currently operational in sewage treatment plants.

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.

One-Sludge Denitri-Nitrification System Application in Reconstruction of Biological Treatment Stations in Russian Federation

2015 ◽  
Vol 725-726 ◽  
pp. 1325-1331 ◽  
Author(s):  
Elena Gogina ◽  
Olga Ruzhitskaya
Keyword(s):  
Activated Sludge ◽  
Russian Federation ◽  
System Application ◽  
Biological Treatment ◽  
Stable System ◽  
Treatment Facilities ◽  
The Russian Federation

The paper presents the main problems and their solutions in the reconstruction of treatment facilities in the Russian Federation. The paper presents the results of research aimed the use of the stable system, which is based on nitrification activated sludge appliance, when the sludge contains bacteria-heterotrophic-nitrificators.

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