scholarly journals Quality assessment of deep-well recharge applications in the Netherlands

2017 ◽  
Vol 17 (5) ◽  
pp. 1201-1211 ◽  
Author(s):  
Andreas Antoniou ◽  
Frank Smits ◽  
Pieter Stuyfzand
Keyword(s):  
Drinking Water ◽  
The Netherlands ◽  
Preventive Measures ◽  
Lessons Learned ◽  
Improve Performance ◽  
Deep Well ◽  
Drinking Water Production ◽  
Environmental Goals ◽  
Iron Manganese

Artificial recharge of aquifers can be performed for various purposes and under varying hydrogeological conditions. We present an overview of deep-well recharge applications which have taken place in the Netherlands over the last two decades. We present the purpose of each application, the issues which had to be resolved, the preventive measures which were taken to improve performance and the lessons learned from each experience. Examples are given of applications which aimed at the storage of water for drinking and other purposes such as irrigation, achieving environmental goals and disposal of wastewater. Applications aiming at drinking water production usually faced issues related to the quality of the abstracted water not meeting drinking water standards with respect to various elements, such as iron, manganese and arsenic. Storage of water in brackish aquifers was complicated by buoyancy effects making part of the recharged water irrecoverable. Recharge of water with the purpose of recovering declined groundwater tables and fighting seawater intrusion was hindered by clogging of the injection well while the disposal of wastewater was limited to aquifers of lower groundwater quality.

Effect of climate changes on waterborne disease in The Netherlands

2005 ◽  
Vol 51 (5) ◽  
pp. 79-87 ◽  
Author(s):  
J.F. Schijven ◽  
A.M. de Roda Husman
Keyword(s):  
Drinking Water ◽  
The Netherlands ◽  
Microbiological Quality ◽  
Residence Times ◽  
Waterborne Pathogens ◽  
Recreational Waters ◽  
Pumping Rate ◽  
Quality Of Water ◽  
Drinking Water Production

Effects of climate change in The Netherlands in the 21st century on the microbiological quality of water for drinking water production and recreation were evaluated. The following was concluded: increased temperature leads to significant additional inactivation of enteric pathogens in surface waters with residence times of more than a month, but not in waters with residence times of up to ten days. Increased precipitation, runoff and storm water overflow lead to more peak concentrations of waterborne pathogens in surface water. Peak concentrations strongly determine the infection risk through drinking water consumption. Drought lowers and increased precipitation elevates groundwater tables, but an effect on the risk of groundwater contamination with waterborne pathogens is not clear. Climate effects are not noticeable near a groundwater well, where the groundwater table and flow rate are mainly determined by the pumping rate. Exposure of recreants to waterborne pathogens that can grow in the water is expected to increase due to increased recreation and increased growth opportunities of these pathogens. Due to warmer summers, pathogens, like amoeba, that have not caused problems up to date in The Netherlands, may now emerge in recreational waters.

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.

scholarly journals Risk analysis in drinking water accumulation

2010 ◽  
Vol 28 (No. 6) ◽  
pp. 557-563 ◽  
Author(s):  
J. Říhová Ambrožová ◽  
J. Říha ◽  
J. Hubáčková ◽  
I. Čiháková
Keyword(s):  
Drinking Water ◽  
Free Water ◽  
Distribution Networks ◽  
Negative Influence ◽  
Water Reservoirs ◽  
Haccp System ◽  
Drinking Water Production ◽  
Water Accumulation

Drinking water is safe water, from the perspective of long-term use is does not cause any disease, pathogenic and hygienically unsafe microorganisms do not spread in it and customers enjoy its consumption. Drinking water is regarded as a foodstuff, therefore the known HACCP system can be used in the control system which can be applied not only directly to the final product, but also to the whole system of drinking water production, distribution, and accumulation. Even if there is no problem concerning the water processing and the technological line is well adjusted, the quality of drinking water is subsequently deteriorated by its transportation and accumulation. The condition and character of the operated distribution network and reservoirs are significantly and substantially related to the maintenance of the biological stability and quality of drinking water. This is well confirmed by biological audits of the distribution networks and water reservoirs. A significant fact is the negative influence of the secondary contamination by air in the reservoir facilities and the occurrence of microorganisms (fungi, bacteria) in free water and in biofilms. The findings obtained in the framework of biological audits were so alarming that the outputs of biological audits contributed to the reconsideration of the efficiency of the standard for the construction and design of water reservoirs and pointed out the necessity of its review.

Assessment and management of health risks related to the recycling of filter backwash water in drinking water production

2013 ◽  
Vol 8 (2) ◽  
pp. 166-179 ◽  
Author(s):  
J. F. Loret ◽  
L. Cossalter ◽  
S. Robert ◽  
I. Baudin ◽  
M. Conan ◽  
...  
Keyword(s):  
Drinking Water ◽  
Drinking Water Treatment ◽  
Direct Filtration ◽  
Cryptosporidium Oocysts ◽  
Untreated Water ◽  
Drinking Water Production ◽  
The Impact ◽  
By Products ◽  
Filter Backwash Water

Analytical campaigns were conducted on different drinking water treatment lines in order to characterize filter backwash water and assess the impact of recycling this water at the head of the plant. The pollutants identified in this water are essentially in the form of particles. Recycling this water may consequently increase the concentration of parameters such as turbidity, suspended solids, metals from coagulants and protozoa. On the other hand, no release of pesticides nor significant generation of disinfection by-products was observed during filter backwash with chlorinated water, in the conditions applied in France for chlorination. A modeling approach based on the mass balance of Cryptosporidium oocysts was applied to estimate the impact of recycling on oocysts concentration in the inlet water. A risk of infection was then assessed for each recycling scenario. A similar approach was also applied for amoebae, which have the capacity to colonize filter media, and for metal residues from coagulants. The results of this study demonstrate that two different situations have to be considered separately: • In the case of treatment lines composed of separate sedimentation and filtration steps, recycling at the head of the treatment process, even with no treatment, has no significant consequence on the microbial quality of the inlet water, and generates no additional health risk for the consumer. • In the case of treatment lines with no sedimentation step (direct filtration or UF used alone), recycling untreated water generates an excess of risk for the consumer which is not acceptable. Adding a coagulation / sedimentation step in the recycling circuit is sufficient in that case to keep the risk within acceptable limits.

scholarly journals Novel Integrated Ultrafiltration and Reverse Osmosis System in High Quality Drinking water Production

2020 ◽  
Vol 36 (6) ◽  
pp. 1243-1247
Author(s):  
Vinod Kumar S ◽  
R Baskaran
Keyword(s):  
Drinking Water ◽  
Reverse Osmosis ◽  
Concentration Polarization ◽  
Integrated System ◽  
Quality Analysis ◽  
Water Contaminants ◽  
Quality Of Water ◽  
Ultra Filtration ◽  
Drinking Water Production

Modernization in water technology plays a major role in ensuring a clean, safe, and feasible supply of drinking water. Enhancing performance in terms of price and quality, flow ability of the plant, sustainable development; integrated membrane processes have been developed. The most crucial issues found in RO applications such as concentration polarization and membranes fouling are reduced by using this integration of membranes. Conventional reverse osmosis filtration has sand and coke filters as pre filters. In this work these pre filters have been replaced by ultra-filtration which ensures undoubtedly the best quality of water despite the quality of feed with low power consumption and chemicals. These integrated systems are the better thing for complete elimination of microorganism and water contaminants in their category of selection. The present work also contributes on water quality analysis for brackish water using both the above desalination membrane technology. This integrated system can be remotely monitored and self-adapted model-based control.

scholarly journals Combining physicochemical properties and microbiome data to evaluate the water quality of South African drinking water production plants

PLoS ONE ◽  
2020 ◽  
Vol 15 (8) ◽  
pp. e0237335
Author(s):  
Tawanda E. Maguvu ◽  
Cornelius C. Bezuidenhout ◽  
Rinaldo Kritzinger ◽  
Karabo Tsholo ◽  
Moitshepi Plaatjie ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Physicochemical Properties ◽  
South African ◽  
Water Production ◽  
Drinking Water Production ◽  
Microbiome Data

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.

Situation of microbiological contamination in bottled drinking water products and some influencing factors in Hau Giang province in 2020

2021 ◽  
Vol 05 (04) ◽  
pp. 47-60
Author(s):  
Thi Thuy Loan Vo ◽  
Thi Tuyet Hanh Tran
Keyword(s):  
Drinking Water ◽  
Food Safety ◽  
Influencing Factors ◽  
Water Production ◽  
Microbiological Contamination ◽  
Factors Affecting ◽  
E Coli ◽  
Bottled Drinking Water ◽  
Drinking Water Production

Background: Bottled drinking water has become popular for consumption by customers. Bottled drinking water with pathogenic microbiological contamination is a public health concern. This study aimed to describe the current situation of microbiological contamination in bottled drinking water products, food safety conditions and some influencing factors in production facilities in Hau Giang province in 2020. Methods: A cross-sectional study has been conducted in 2020 using quantitative and qualitative methods. The evaluation was carried out at 54 bottled drinking water production facilities, 108 workers/owners and 54 samples collected from facilities for microbiological analysis in the province. In-depth interviews were conducted with local government officials on food safety, two owners of facilities and two workers. Results: It showed that the proportion of microbiological contamination in bottled drinking water accounted for 18.5%, of which P. aeruginosa contamination was 18.5%; and Coliform contamination was 3.7%; No drinking water samples were contaminated with E. coli. 79.6% of facilities met general food safety conditions. There were several factors affecting the proportion of microbiological contamination of bottled drinking water as follows: Bad compliance with food safety in production for the sake of profit by workers, affecting the quality of products such as trash cans without lids; No sterilization treatment before filling; Non-sterilization in filling room. Non-monitoring of UV lights for replacement; No regular cleaning of water pipes, tanks, and discharge valves; Difficulty in state management of food safety for facilities of bottled drinking water production, such as insufficient manpower, lack of equipment and funding for activities. Conclusion: The quality of bottled drinking water in Hau Giang province was not good. The important factors affecting the contaminated bottled drinking water products were identified. We recommend that: management agencies should frequently conduct sudden inspections and supervisions of facilities with no ensured food safety and strictly handle according to regulations. Owners of bottled water facilities should voluntarily comply with food safety. This study is particularly concerned with ensuring food safety conditions in the production of bottled drinking water to prevent products from microbiological contamination. Keywords: Microbiological contamination; E. coli, Coliform, P. aeruginosa; bottled drinking water; food safety conditions; Hau Giang province.

How Dutch drinking water production is affected by the use of herbicides on pavements

2004 ◽  
Vol 49 (3) ◽  
pp. 173-181 ◽  
Author(s):  
A.D. Bannink
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
The Netherlands ◽  
Emission Reduction ◽  
Water Production ◽  
Limited Effect ◽  
Surface Water Pollution ◽  
Drinking Water Production ◽  
Reduction Of Emissions ◽  
Water Companies

About forty per cent of drinking water in The Netherlands is produced from surface water. Dutch water companies, that have to rely on this source, are dealing with major water quality problems due to the use of herbicides on pavements. Voluntary measures and bans have had only limited effect on the reduction of emissions of herbicides that runoff from pavements into surface water in The Netherlands. The effects on the production of drinking water from surface water should play a role in the authorisation of pesticides. Stricter regulations, including mandatory emission reduction measures and certification, are necessary. The enforcement of existing Dutch surface water pollution laws should solve part of the problem. Due to the international nature of most of the surface water used for drinking water supply, it is necessary that other countries take measures as well. European legislation brings a solution closer if implemented well and seriously enforced. The threat of strict legislation keeps pressure on the transition towards decreasing the dependence on chemicals for weed control on pavements.

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