Estimation of the effectiveness of ozone use in the purification of heavily contaminated water supply sources

2021 ◽  
pp. 8-17
Author(s):  
С.Е. Алексеев ◽  
Е.В. Корса-Вавилова ◽  
А.Я. Шмелев
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Current Standard ◽  
Organoleptic Characteristics ◽  
Residual Aluminum ◽  
Iron Manganese ◽  
Manganese Compounds

Источники питьевого водоснабжения (реки Великая, Волга, Вычегда, Которосль, Лименда, Солда, Северная Двина, Томь и Тура) характеризуются повышенным содержанием органических соединений природного и антропогенного происхождения. Традиционная технология двухступенчатого осветления воды коагулированием в данном случае по своей эффективности не соответствует качеству воды источника, в результате по некоторым показателям питьевая вода периодически не отвечает современным требованиям стандарта. Особенно сложно обеспечивать в питьевой воде предельно допустимые концентрации органических веществ, а также соединений железа, марганца и остаточного алюминия. Для очистки такой воды были изучены дополнительные методы окисления и сорбции. Результаты исследований показали, что предварительное озонирование речной воды и (или) постозонирование воды после фильтров станции водоподготовки повышают эффективность очистки по цветности, мутности, удалению соединений железа и марганца, уменьшают концентрацию остаточного алюминия, улучшают органолептические показатели. Сорбционная очистка с озонированием существенно улучшает качество очищенной воды и позволяет обеспечить допустимый уровень содержания органических загрязнителей в питьевой воде. Sources of drinking water supply (the Velikaia, Volga, Vychegda, Kotorosl’, Limenda, Solda, Severnaia Dvina, Tom’ and Tura rivers) are characterized by increased concentrations of organic compounds of natural and anthropogenic origin. The traditional technology of two-stage water clarification by coagulation in terms of the efficiency, in this case, is not applicable to the quality of the source water; as a result, by some indicators, drinking water periodically does not meet the current standard requirements. It is especially difficult to ensure the permissible maximum concentrations of organic substances in drinking water, as well as of compounds of iron, manganese and residual aluminum. To provide for the purification of such water, additional oxidation and sorption methods have been studied. The research results showed that preliminary ozonation of river water and (or) post-ozonation of water after filtration at a water treatment plant provide for increasing the efficiency of purification in terms of color, turbidity, removal of iron and manganese compounds; for reducing the concentration of residual aluminum, and improving the organoleptic characteristics. Sorption with ozonation significantly improves the quality of treated water and allows to ensure the permissible level of organic pollutants in drinking water.

Preozonation coupled with flotation filtration: successful removal of algae

1998 ◽  
Vol 37 (2) ◽  
pp. 65-73 ◽  
Author(s):  
Antoine Montiel ◽  
Bénédicte Welté
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Pilot Plant ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Operating Conditions ◽  
Successful Removal ◽  
Original Treatment

The renovating of a new water treatment plant in Paris which produces 15% of the capital's drinking water supply is described: an original treatment plant consisting of a preozonation, a flotation with a low level of coagulant coupled with contact coagulation. Coagulation on filter has been tested on a pilot plant. The results are excellent (95 to 99%) and have led to the building of a new water treatment plant with very flexible operating conditions depending on the quality of the water.

Barcelona's water supply improvement: the brine collector of the Llobregat river

1994 ◽  
Vol 30 (10) ◽  
pp. 221-227 ◽  
Author(s):  
Jordi Martín-Alonso
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Salt Mine ◽  
Water Production ◽  
Public Work ◽  
Drinking Water Production ◽  
Llobregat River

The Llobregat is a 156 km long river, which supplies 35% of the Barcelona's drinking water needs from the Sant Joan Despí Water Treatment Plant. Since the establishment of the Salt Mine Works in the Llobregat basin in 1923, a progressive salinization of the water sources has been recorded. The operation of the Brine Collector, as a public work carried out by Aigües de Barcelona (AGBAR), started in 1989; it enabled a very significant improvement in the quality of the surface water used for drinking-water production.

Experiences with the practical implementation and operation of biological nitrification for a small-scale drinking water treatment plant

2016 ◽  
Vol 16 (4) ◽  
pp. 922-930 ◽  
Author(s):  
L. Richard ◽  
E. Mayr ◽  
M. Zunabovic ◽  
R. Allabashi ◽  
R. Perfler
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Drinking Water Supply ◽  
Small Scale ◽  
Treatment Performance ◽  
Biological Nitrification

The implementation and evaluation of biological nitrification as a possible treatment option for the small-scale drinking water supply of a rural Upper Austrian community was investigated. The drinking water supply of this community (average system input volume: 20 m3/d) is based on the use of deep anaerobic groundwater with a high ammonium content of geogenic origin (up to 5 mg/l) which must be treated to prevent the formation of nitrites in the drinking water supply system. This paper describes the implementation and operation of biological nitrification despite several constraints including space availability, location and financial and manpower resources. A pilot drinking water treatment plant, including biological nitrification implemented in sand filters, was designed and constructed for a maximum treatment capacity of 1.2 m3/h. Online monitoring of selected physicochemical parameters has provided continuous treatment performance data. Treatment performance of the plant was evaluated under standard operation as well as in the case of selected malfunction events.

scholarly journals Analysis Of Raw Water Supply In Pucang Gading Housing Complex, District Of Demak To Preparation Of Water Resources And Water Resources Management

2018 ◽  
Vol 73 ◽  
pp. 03012
Author(s):  
Solikhul Abdi ◽  
Sudarno
Keyword(s):  
Drinking Water ◽  
Water Resources ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Source ◽  
Water Sources ◽  
Service Area ◽  
Raw Water ◽  
Housing Complex

Pucang Gading Housing Complex is an area within the Village Batursari, District of Demak with a population of 2018 as many as 44,257 inhabitants. Raw water service system Mranggen Unit is divided into 5 areas of service (service area Mranggen, Batursari I, Batursari II, Batursari III and Kebon) which utilize raw water source of water treatment plant (IPA Waru) and 8 Wells In a total discharge of 120 liter/second. The number of home connections in Pucang Gading area is currently 3,374 house connections, with a total water usage 14.25 liter/second Water discharges from clean water sources in Pucang Gading region are currently not maximally available to supply water to Pucang Gading service area. In this research will know the problems and readiness that exist by looking from the achievement of Medium Term Development Plan of Demak Regency Year 2016-2021. This research uses SWOT analysis method that is internal and external factors. The selection of raw water sources for drinking water should pay attention to aspects of quality, quantity and continuity. Demak Regency has the potential of surface water either river/ reservoir/dam. The problems and challenges of drinking water supply include issues of safe access to water supply, and regulation of groundwater utilization for the community.

scholarly journals Fate and fractionation of aluminum in a full-scale Al-based drinking water treatment plant

2020 ◽  
Vol 69 (5) ◽  
pp. 469-477
Author(s):  
Hongyuan Liu ◽  
Haoran Liu ◽  
Yawei Xie
Keyword(s):  
Drinking Water ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Aluminum Concentration ◽  
Average Water Temperature ◽  
Treated Water ◽  
Residual Aluminum ◽  
Average Water ◽  
Particle Counts

Abstract Residual aluminum in drinking water is widely concerning due to its potentially harmful effect on human health and drinking water distribution systems. The fate and fractionation of aluminum and the factors influencing residual aluminum in a full-scale Al-based drinking water treatment plant (DWTP) was presented in Jiaxing, China. The results showed that treated water residual aluminum concentration was less than 0.1 mg/L regardless of the seasonal change of raw water aluminum concentration. The addition of secondary flocculation had a negligible influence on treated water residual aluminum concentration due to the efficient removal of particulate aluminum by sand filter. Residual aluminum concentration of treated water was lower (mean 0.037 mg/L) in summer (average water temperature was 29 °C) than that (mean 0.067 mg/L) in winter (average water temperature was 16 °C). Significant positive relationships between particulate aluminum concentration and particle counts, as well as the total aluminum concentration of treated water and turbidity, were found. Those relationships provided the possibility to estimate residual aluminum concentration by monitoring particle counts and turbidity.

Integration of water treatment, environmental and information technologies: Amagasaki project

2002 ◽  
Vol 2 (5-6) ◽  
pp. 185-191
Author(s):  
T. Hanamoto ◽  
D. Nagashio ◽  
T. Sasaki
Keyword(s):  
Information Technology ◽  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
Information Technologies ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
High Rate ◽  
Treatment Technology ◽  
Treatment Train

The Hanshin Water Supply Authority (HWSA) supplies drinking water to approximately 2.4 million consumers in the Hanshin area, including the city of Kobe. The HWSA has completed a project integrating two aging plants into a new water treatment plant (Amagasaki WTP) with a capacity of 373,000 m3 per day. The Amagasaki WTP has three significant special merits: water treatment, environmental, and information technology. The water treatment system is based on a multiple-barrier concept that estimates the value of water treatment technology not by individual processes, but by the overall performance of the system. The treatment train consists of coagulation/sedimentation, ozonation/activated carbon fluidized-bed adsorption, and coagulation/high-rate filtration, most of which fully utilize upward-flow. The key environmental technology characteristic of the new WTP is its achievement of zero-emissions. This design reduces CO2 discharge from the plant, as well as making it possible to completely recycle the sludge as an alternate material of agricultural and horticultural soils. Improvement of customer relations is a feature of the information technology. The authority provides information on the safety of the finished drinking water, watershed management, and the maintenance of source water quality. A visitors' area and emergency water supply facility for use in disasters have also been set up at the WTP. The Amagasaki WTP started commercial operation in April 2001. The completion of this renovated plant will significantly raise the quality of service to the customers.

Реконструкция станции очистки подземных вод г. Ноябрьска (ЯНАО)

2020 ◽  
Author(s):  
A. Seliukov ◽  
V. Rakhimov
Keyword(s):  
Hydrogen Peroxide ◽  
Drinking Water ◽  
Hydrogen Sulfide ◽  
Water Treatment ◽  
Ground Water ◽  
Potassium Permanganate ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Standard Quality

Приводятся основные результаты технологических изысканий, положенных в основу проекта реконструкции станции очистки подземных вод г. Ноябрьска (Ямало-Ненецкий автономный округ). Станция построена по проекту ЗАО ДАР/ВОДГЕО (Москва) и принята в постоянную эксплуатацию в сентябре 2006 г. На станции используется новая технология, предусматривающая последовательную обработку воды двумя окислителями пероксидом водорода и перманганатом калия с целью очистки от соединений железа и марганца. Недостатки проекта и неполная реализация проектных решений усложняют штатную эксплуатацию станции и затрудняют получение питьевой воды нормативного качества. Установлено, что в подземной воде присутствует сероводород в концентрациях до 0,1 мг/дм3, что требует дополнительного расхода реагентов. Ручное дозирование реагентов приводит к значительным отклонениям от необходимых доз: от 14,5 до 19,1 для пероксида водорода и от 8,5 до 9,1 для перманганата калия. Указано, что применяемые в качестве реагента технические продукты перманганата калия производства КНР создают угрозу увеличения токсичности питьевой воды. Найденное значение величины индекса Ланжелье (индекса насыщения карбонатом кальция) подземной воды (2,35 ед.) позволило сделать вывод о необходимости стабилизационной обработки путем подщелачивания. Выполненные пробные обработки воды пероксидом водорода и перманганатом калия в сочетании с подщелачиванием показали, что такой процесс обеспечивает достижение остаточных концентраций марганца 0,1 мг/дм3 и железа общего 0,10,15 мг/дм3 при отсутствии остаточного сероводорода. Однако для получения воды постоянного нормативного качества необходима высокая точность дозирования реагентов, что может быть достигнуто только путем полной автоматизации процесса. Выполненный на основе технологических изысканий проект реконструкции станции очистки подземных вод г. Ноябрьска позволяет решить существующие проблемы и обеспечить нормативное качество очищенной воды.The main results of technological surveys that form the basis for the project of reconstruction of the ground water treatment plant in Noyabrsk (Yamalo-Nenets Autonomous Okrug) are presented. The plant was built according to the project of DAR/VODGEO CJSC (Moscow) and commissioned in September 2006. The plant uses a new technology that provides for the sequential treatment of water with two oxidizing agents hydrogen peroxide and potassium permanganate to remove iron and manganese compounds. The project shortcomings and incomplete implementation of design solutions complicate the regular operation of the plant and make it difficult to ensure the standard quality of drinking water. It was stated that ground water contained hydrogen sulfide in concentrations up to 0.1 mg/dm3, which required extra consumption of chemicals. Manual dosing of chemicals causes significant deviations from the required doses: from 14.5 to 19.1 for hydrogen peroxide and from 8.5 to 9.1 for potassium permanganate. It is pointed out that crude products of potassium permanganate produced by the P. R. China used as a chemical agent in drinking water supply, pose a threat of increased toxicity of drinking water. The determined value of the Langelier index (index of saturation with calcium carbonate) of ground water (2.35 units) allowed to conclude that stabilization treatment by alkalization is required. The performed test water treatment with hydrogen peroxide and potassium permanganate in combination with alkalization showed that this process provided for achieving the residual concentrations of manganese 0.1 mg/dm3 and total iron 0.10.15 mg/dm3 in the absence of residual hydrogen sulfide. However, to produce water of constant standard quality, high accuracy of chemical dosing is required that can only be provided by completely automated dosing. The project of upgrading the ground water treatment plant in Noyabrsk designed on the basis of technological research, allows to resolve the existing problems and ensure the standard quality of drinking water.

scholarly journals Study of the management efficiency of the drinking water supply in arid areas: case of Bechar city (southwest of Algeria)

2019 ◽  
Vol 9 (8) ◽  
Author(s):  
Mohammed Amin Kendouci ◽  
Ali Bendida ◽  
Saliha Mebarki ◽  
Benali Kharroubi
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Water Pressure ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Annual Rainfall ◽  
Management Efficiency ◽  
Average Annual Rainfall ◽  
The City

Abstract Bechar, a typical Saharan city with an arid climate, receives an average annual rainfall of around 72 mm. Two resources ensure the supply of drinking water to the city of Bechar; the first comes from a catchment field consisting of eight boreholes, and the second comes from the Djorf Torba dam located in the west at about 45 km where is located the drinking water treatment plant. Water scarcity and water supply disruption have caused residents of Bechar city connected to the water supply system to invest in relatively expensive storage and pumping facilities to meet their domestic needs. The survey was conducted on a sample of 20% of the population of Bechar city in a period of 4 months. Through the survey, we have reached that 74% of citizens of Bechar city are not satisfied with the quality and quantity of water and 59% of respondents are not satisfied with the water pressure and are therefore forced to use the pumps.

scholarly journals Spatial Assessment of Selangor, Malaysia Water Treatment Plant Performance Using Chemometric Technique

2018 ◽  
Vol 7 (3.14) ◽  
pp. 139
Author(s):  
H M. Zolkipli ◽  
H Juahir ◽  
G Adiana ◽  
N Zainuddin ◽  
A B. H. M. Maliki ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Plant Performance ◽  
High Quality ◽  
Physico Chemical ◽  
Chemometric Technique ◽  
And Performance

This study aims to identify the most significant parameters in drinking water quality, spatial disparities of treated water (TW) and performance of water treatment plant (WTP) in Selangor. Physico- chemical (PCPs), Inorganic (IPs), Heavy metal and organic (HMOPs) and pesticide (PPs) were selected as parameters to discriminate the source of WTP pollutant. Chemometric technique such as principle component analysis (PCA), one-way analysis of variance (ANOVA) and discriminant analysis (DA) was applied to validate the performance of water treatment plant. PCA identified the most significant parameters which are highlighted six out of eight parameters for PCPs, six out of twelve parameters for IPs, nine out of sixteen parameters for HMOPs and all seventh parameters for PP. ANOVA for distinguish two categories region in WTP and showed both of PCPs and IPs had significant differences due to their concentration (p < 0.5) and HMOPs suggested fifth of significant differences within regions (p < 0.05). PP doesn’t give any significant differences (p > 0.05). DA was suggested PCPs, IPs and HMOPs in good performance (76.96%, 91.90% and 93.27%) except PP (50.43%). We can conclude that this chemometric technique can expose which area of WTP need to be properly maintains their performance to produce high quality of drinking water.  

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