ABSTRACT
This paper aims to analyze the research on the current situation of water-saving agriculture development in Europe. Water-saving agriculture in Europe started early, governments and farmers in various countries have a strong awareness of water-saving in agriculture and have achieved certain results. Due to the global spread of the COVID-19 pandemic, the lack of up-to-date field research, the complexity of various agricultural disciplines and categories, and the lack of information sharing, the current cognition of recent progress in the development of water-saving agriculture in Europe is not comprehensive enough. This paper selects four representative European countries: Spain, Germany, Italy, and Denmark as the research objects. Based on the existing research of Chinese and Western scholars, this paper analyzes and studies the current situation of water-saving agriculture in Europe. It has far-reaching significance for other countries in the world to have further development in water-saving agriculture and to protect water resources.
ABSTRACT
Aquaculture production in Bulgaria has increased over the last decade, reaching 16 442 tonnes in 2019. Fish production has doubled in comparison with 2007, while that of mussels has increased tenfold. The Bulgarian contribution to EU aquaculture production has been increasing significantly in both volume and value over the years, making up 1.15% of the volume and 1.0% of the value of EU production in 2019. Freshwater aquaculture accounts for 78% of total production. Common carp dominates with about 29.4% (4836 t), followed by rainbow trout with 29.2% (4820 t) in 2019. The cultivation of sturgeon species and caviar production are among the most dynamically developing aquaculture segments. Mariculture in the Black Sea has increased in recent years, with the production of Mediterranean mussel reaching 2932 tonnes in 2019. An average of 405 farms operated during the period 2010-2019. Four regions (Plovdiv, Stara Zagora, Burgas and Montana) account for 50% of the total fish production. Pond aquaculture is the dominant technology used in Bulgaria, and it serves as the basis for numerous other activities, including management of fish stocks in various water bodies mainly for recreational fishing. Approximately 35 net-cage farms currently operate in bigger dams. Recirculating fish farms output made up only 0.15% of the total amount of aquaculture for the period 2010-2019. The aquaculture sector exhibited difficulties in recovering from the financial crisis of 2007-2008, manifested by a slow growth for the period 2010-2014. From 2015 to 2019 there has been a significant growth, manifested in a sharp increase of total revenue and profitability, especially among the larger enterprises in the sector, as well as an increase in the number of employees, and the labour productivity. As a result, in 2019 the registered total revenue per enterprise and total revenue per employee were more than double the respective figures for 2010. The profits of larger enterprises increased more than three times on average, but smaller entities, micro-enterprises with less than 5 employees, operated at the border line between profit and loss. The COVID-19 crisis could have lasting consequences. Despite EUR 1.2 million direct payments in the sector in 2020, there has been a significant drop in the export of aquaculture products. Consumption of fish and other aquaculture products remains low compared to those in the other EU countries.
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The use of plastics in the world is increasing, but their proper final arrangement is limited. Peru made regulatory efforts to reduce its use;however, they are isolated activities that have not represented a significant change in their management. This study allows to identify the presence of microplastic on one of the busiest beaches of the city of Lima Metropolitana, during the emergency period caused by the SARS-COV-2 pandemic. To achieve the objectives of the research, it has been sampled in high tide and supra-coastal areas, applying the methodology proposed in the Ministry of the Environment's Soil Sampling Guide. This study shows the presence of microplastics, with an abundance of 43 pieces per m2, and found that the predominance of the type of microplastic found is of secondary origin (polystyrene and polypropylene);however, 20.9% correspond to primary microplastics (pellets) whose source could not be determined. Finally, it is indicated that despite restrictions on the state of emergency the number of microplastics per m2 in Agua Dulce Beach between 2019 (40 pieces) and 2020 (43 pieces) increased by 7.5%.
ABSTRACT
Water downstream from factory farms harbours an invisible threat to people's health which could eclipse the COVID-19 crisis. The threat? Antibiotic Resistance Genes (ARGs) which are driving antimicrobial resistance the world's superbug crisis - projected to kill up to 10 million people annually by 2050. This publication reports the presence of ARGs in animal waste discharged from industrial farms into public waterways or onto soil (or crops) in four countries. Gauge community impact and sentiment regarding the issue was also highlighted. The water and sediment from public water courses connected to effluent discharges from 6-10 pig farms were tested in each of four countries (Canada, Spain, Thailand and the USA).
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Irrigation is increasingly being called upon to help stabilize and grow food and water security in the face of multiple crises;these crises include climate change, but also recent global food and energy price crises, including the 2007/08 food and energy price crises, and the more recent crises triggered by the COVID-19 pandemic and the war on Ukraine. While irrigation development used to focus on public, large-scale, surface- and reservoir-fed systems, over the last several decades, private small-scale investments in groundwater irrigation have grown in importance and are expected to see rapid future growth, particularly in connection with solar-powered pumping systems. But is irrigation 'fit-for-purpose' to support population growth, economic development, and multiple food, energy and climate crises? This paper reviews how fit-for-purpose irrigation is with a focus on economies of scale of surface and groundwater systems, and a particular examination of systems in Sub-Saharan Africa where the need for expansion is largest. The review finds challenges for both larger surface and smaller groundwater systems in the face of growing demand for irrigated agriculture and dwindling and less reliable water supplies. To support resilience of the sector, we propose both a holistic design and management improvement agenda for larger surface systems, and a series of suggestions to improve sustainability concerns of groundwater systems.
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The COVID-19 pandemic affected public health, economy, social life, and the environment. It infected and killed millions of people around the world. Most of the recent literature has focused on the medications to combat this virus, including antivirals and vaccines, but studies about its effect on the environment are still rare, particularly on the water sector. Most of the studies concentrate on the effect of water availability on COVID-19, the effect of the used medications on the water, and the probability of transmission of SARS-CoV-2 through water. Herein, we have summarized the effects of COVID-19 on the water sector from many perspectives. We show different methods to detect the effect of the pandemic on water and also methods to investigate the presence of the virus or its RNA in the water. We also show the different effects of its presence in the wastewater, the probability of transmission, the detection of different variants, and the prediction of new waves. We also show the disadvantages and advantages of the pandemic in the water sector. We finally suggest some recommendations to face this pandemic and the future pandemics for the governments and water policymakers, water treatment plants, general population, and researchers. The aim of this review is to show the different aspects of the pandemic in order to give a general idea about what must be done in order to minimize its effect and any probable pandemic in the future.
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Wastewater-based epidemiology (WBE) is a powerful and cost-effective tool for investigating chemicals consumption/pathogens infection and health status of populations, and is rapidly evolving as COVID-19 continues to ravage the world. This paper reviews the significant developments and breakthroughs of WBE in 2021 including collection, pretreatment and analysis of sewage samples, materials stability, correction factors calculation and uncertainty analysis, implementation cases and so on, based on the research findings published in international top academic journals or the most influential achievements. It provides reference for clarifying the development of WBE and promoting the research and application of WBE.
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The Russian invasion of Ukraine and the COVID-19 pandemic have actualized the need to rethink the recreational use of thermal mineral springs by resort hotels in order to treat the consequences of post-war injuries, psychological rehabilitation and health restoration. Solving these problems requires strengthening the role of recreational enterprises and resort hotels in restoring the health of the population by expanding the directions of their economic activity and forming the investment attractiveness of the national resort and recreational product in world markets. The publication pays special attention to determining the physical and chemical properties of thermal mineral springs, which is an important component in the development of healing methods and the creation of specific health recovery programs. The spatial structure of the distribution of thermal mineral springs by regions of the world is clarified. The main types of establishments with thermal mineral springs, which provide recreational, healing and therapeutic services, are determined. In addition, the amount of financial losses suffered by institutions with thermal mineral springs as a result of the COVID-19 pandemic is determined, as well as the dynamics of volume and forecast of growth of the world market of thermal mineral springs, due to the need to recover health, is identified. According to the results of the study, it is found that thermal mineral springs are a unique natural resource. Their recreational use is the main activity of many resort hotels. As a result of the Russian aggression and the COVID-19 pandemic, there was a shift in emphasis in the functioning of resort hotels from relaxation and rest towards treatment and rehabilitation, which will help restore the demand for resort and recreational services in the post-war period. Thus, the increase in demand for the health-recovering, medical and recreational services will make it possible to expand the recreational use of thermal mineral springs, update the menu of services and become more appealing for attracting investment capital.
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In COVID-19 pandemic in the world, alcohol (ethanol) can be listed as a sterilizing disinfectant. It absolutely played a Messianic function on the sterilization effect. And it is said that it has one more function called "salinity reduction" but that function is not widely known. The two functions (Sterilization & Salinity Reduction) mentioned above are extremely important regarding the theme of "raw seawater into beverage" in this study. It is thought that if the two functions are achieved other water quality items such as NO-2 and other items can be cleared with comparative ease. To put briefly the feature of modern waterworks in a word, it can be said that "source of water is river water and its sterilization is chlorine". In this study, we set up it with a completely new sanitization method (great reset), that is, "source of water is mixtures (seawater and rainwater) and its sterilization is ethanol". And it can be also expected that the capture and storage of ethanol as a renewable resource is basically possible by utilizing sunlight as a natural power. Therefore, we think that this resolves itself into a question of the choice (sense of value/culture) of the users. It means that how users finally balance out with three factors, i.e., cost, risk (safety) and benefit. Based on the viewpoint mentioned above, we examined the possibility of raw seawater into beverage using ethanol as a renewable resource to create humankind's wisdom to the settlement (breakthrough) of the water scarcity in the world including Asia and Africa. As a result, we have obtained the new findings that suggest the possibility of raw seawater into beverage using ethanol as a renewable resource.
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Background: Reports showed presence of SARS-CoV-2 genetic material in wastewater. Wastewater concentration methods are optimized for detection of non-enveloped viruses so need to be adopted for enveloped viruses and their genetic material. Methods: Conventional (cRT-PCR) and quantitative real time RT-PCR (qRT-PCR) were used as readouts to compare 4 water concentration methods namely, (A) filtration on negatively charged membrane followed by extracting RNA from it, (B) adsorbtion-elution method, (C) flocculation with skimmed milk and (D) polyethylene glycol precipitation, to detect SARS-CoV-2 RNA and 229E human coronavirus (229E-HCoV) as a model for spike-containing enveloped virus from fresh and wastewater. Results: On using cRT-PCR: recovery rate of SARS-CoV-2 RNA was better using method A then B for fresh water and method B then D for wastewater. 229E-HCoV recovery from fresh water was better using method C then A and methods B then D for wastewater. On using qRT-PCR, both methods A and B were better for SARS-CoV-2 RNA recovery from both fresh and wastewater. For the 229E-HCoV methods A was the most efficient for fresh water and method B for wastewater. Conclusion: Method B is recommended for SARS-CoV-2 RNA or whole 229E-HCoV recovery from wastewater.
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In this paper, we construct a hybrid model, consisted of a Bayesian Vector Autoregressive structure with Bayesian stochastic volatility (SVAR-SV), as well as, Fourier Series (FS). We test the model's performance in terms of forecasting ability, comparing it with simple Bayesian stochastic volatility (SV), and also with a classical econometric autoregressive model. By estimating the average prices of the major Food futures in the stock market, and the average prices of the biggest Marine companies' stocks, we test the effect of Covid-19 on these stocks, through the proposed hybrid model, and the impulse-response functions between the aforementioned. Through this approach, we test whether the Covid-19 pandemic hindered the performance of marine companies and affected the food prices, with those two affecting one another. Based on the findings, a shock is apparent from the Food futures to the Marine companies' stocks, and the hybrid model proposed is the best, in terms of forecasting ability.
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Floods are the most commonly occurring natural disaster, with the Centre for Research on the Epidemiology of Disasters 2021 report on "The Non-COVID Year in Disasters" estimating economic losses worth over USD 51 million and more than 6000 fatalities in 2020. The hydrodynamic models which are used for flood forecasting need to be evaluated and constrained using observations of water depth and extent. While remotely sensed estimates of these variables have already facilitated model evaluation, citizen sensing is emerging as a popular technique to complement real-time flood observations. However, its value for hydraulic model evaluation has not yet been demonstrated. This paper tests the use of crowd-sourced flood observations to quantitatively assess model performance for the first time. The observation set used for performance assessment consists of 32 distributed high water marks and wrack marks provided by the Clarence Valley Council for the 2013 flood event, whose timings of acquisition were unknown. Assuming that these provide information on the peak flow, maximum simulated water levels were compared at observation locations, to calibrate the channel roughness for the hydraulic model LISFLOOD-FP. For each realization of the model, absolute and relative simulation errors were quantified through the root mean squared error (RMSE) and the mean percentage difference (MPD), respectively. Similar information was extracted from 11 hydrometric gauges along the Clarence River and used to constrain the roughness parameter. The calibrated parameter values were identical for both data types and a mean RMSE value of ~50 cm for peak flow simulation was obtained across all gauges. Results indicate that integrating uncertain flood observations from crowd-sourcing can indeed generate a useful dataset for hydraulic model calibration in ungauged catchments, despite the lack of associated timing information.
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The COVID-19 pandemic raised the public profile of wastewater-based infectious disease monitoring. General media coverage about wastewater detection of SARS-CoV-2 (the COVID-19 coronavirus) increased community awareness of the potential use of wastewater for the detection and surveillance of emerging diseases and also heightened recognition of the potential for wastewater to harbour and convey a variety of pathogens. This has also generated questions about the potential public health impacts of emerging pathogens, such as SARS-CoV-2 and mpox, in sewage and recycled water. To ensure water security in an era of climate change, water recycling is increasingly important in Australia and other water-stressed nations and managing disease risks in integrated water management is thus of critical importance. This paper demonstrates the existing risk management provisions for recycled water and explores potential issues posed by novel and emerging pathogens. First, a synopsis of some key emerging and re-emerging human pathogens is presented and the risks associated with these pathogens in the context of recycled water provision is considered. Then, an overview of the engineered treatment systems and regulatory framework used to manage these emerging risks in Australia is presented, together with a discusion of how emerging pathogen risks can be managed to ensure safe recycled water supply now and into the future.
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The world is on the threshold of the third wave of the SARS-CoV-2 virus pandemic with over 118 million infected and over 2.6 million deaths. Over the past year, knowledge has been growing about the ways of spreading the infection, including oral-fecal transmission, as a result of the discharge of untreated municipal wastewater laden with the virus from the excrement of infected persons. On the other hand, it has been confirmed that the concentration of viruses in wastewater correlates well with the number of infected people, especially with the 14-day incidence, and therefore the analysis of wastewater provides a good insight into the regional epidemiological situation (water-based epidemiology, WBE) and can be used as a sensitive parameter in monitoring epidemiological trends. This paper provides an overview of the results of previous research on the ways of virus transmission, the main sources of viruses in waste water, the degree of loading of waste water and environmental samples, the survival of the virus in waste water and environmental samples, and techniques for removing and inactivating the virus in waste water. The world is facing the third wave of the SARS-CoV-2 virus pandemics, with over 118 million persons infected and over 2.6 million dead. In the past year, insights into the infection spread routes, including faecal-oral transmission due to untreated urban wastewater discharges containing the virus from excretions of infected persons. It has been also confirmed that the virus concentration in wastewater has a good correlation with the number of infected persons, particularly for a 14-day incidence, so that wastewater analysis provides a good insight into regional epidemiological situations and wastewater-based epidemiology (WBE) can be used as a sensitive parameter in the monitoring of epidemiological trends. This paper provides an overview of to-date research regarding the virus transmission routes, main virus sources in wastewater, load level in wastewater and environmental samples, virus survival in wastewater and environmental samples as well as techniques of virus removal from wastewater and its deactivation.
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The world is nearing the 2030 target-year by which sustainable development goals (SDGs) should be achieved. While other developing regions seem to be making progress toward achieving SDG6, sub-Saharan Africa (SSA) is lagging behind significantly, particularly with regard to access to water supply and sanitation (WSS). As a result, most studies evaluating progress toward the achievement of water security SDGs in SSA have focused on WSS while the rest of the SDG6 targets have received scant attention, often using fragmented or incomplete evidence. Here, we fill this knowledge gap by conducting a comprehensive assessment of the status of SDG6 in all 48 countries in SSA. We provide a review of the progress made, the challenges affecting each SDG6 target and examine the different political, socioeconomic, and environmental factors with potential to undermine the achievement of SDG6 in the region. Our review clearly demonstrates that it is likely that most countries may not achieve water security by 2030. The complex nature of the challenges and factors impeding the achievement of water security in SSA outlined here suggests that a holistic intervention involving local, national, and international stakeholders and the research community is urgently needed to address SDG6 if the 2030 target date is to be met. Approaches to enhance water security may equally consider: (a) underpinning peace and security in SSA and (b) the commitment of more financial resources by donors particularly during this period of COVID-19 pandemic.
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The climate crisis and global pandemic have accelerated the urgency of providing safe drinking water services around the world. Global progress to safe drinking water is off-track with uncertain and limited data on the extent and performance of rural water service providers to inform policy and investment decisions. This report documents a global diagnostic survey to evaluate the status and prospects of rural water service providers from 68 countries. The service providers describe providing drinking water services to a population of around 15 million people through over 3 million waterpoints. The data provides information on the scale and sustainability of rural water services to examine: . The extent and type of professional water service provision in rural areas globally;. Self-reported metrics of operational and financial performance;and, . The size and scope of current rural service providers that could transition to resultsbased funding. Five major findings emerge. First, most service providers aim to repair broken infrastructure in three days or less. Second, almost all service providers reported at least one type of water safety activity. Third, most service providers collect payments for water services. Fourth, about one third of service providers reported major negative shocks to their operations from the COVID-19 pandemic. Fifth, non-governmental service providers in low income countries less often report receiving subsidies for operations, and more often report paying part of user fees to government, including through taxes. Most rural water service providers are working towards provision of affordable, safe and reliable drinking water services. Key barriers to progress include sustainable funding and delivery of services at scale. We propose four conditions to promote scale and sustainability based on policy alignment, public finance, professional service delivery, and verifiable data. To illustrate these conditions, we consider the differing context and service delivery approaches in the Central African Republic and Bangladesh. We conclude by identifying a group of 77 service providers delivering water services for about 5 million people in 28 countries. These 77 service providers report operational metrics consistent with a results-based contracting approach. Technical assistance might support many more to progress. We argue that government support and investment is needed to rapidly progress to the scale of 100 million people to provide evidence of pathways to universal drinking water services for billions more.
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This paper describes and summarizes the strategies and measures that should be applied in Croatia to prevent Legionella contamination in drinking water systems in buildings during the COVID-19 epidemic. Legionella colonisation in drinking water installations increases the risk of infection for humans and it is important to point out that this public health problem is even greater during other epidemics. Legionella can cause very severe types of pneumonia called Legionnaires' disease and less serious illness Pontiac fever. Therefore, Croatia will implement the new EU Directive 2020/2184 on the quality of water intended for human consumption into its legislation, which for the first time includes an obligation to assess the risk of Legionella. This should help reduce the health risk or complications of respiratory infections (severe pneumonia) and mortality during other epidemics (COVID-19 and similar).
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The coronavirus disease (COVID-19) has emerged as the latest and serious public health threat throughout the world. In the absence of prevention and rehabilitation interventions, different countries have implemented shutdown and/or lockout policies to monitor the transmission of the epidemic, resulting of a significant reduction in anthropogenic activities. As a result, this kind of phenomenon is helped to inhibit the environmental degradation activity by reducing various pollutants from the air, water and soil. This condition provided 'a once-in-a-lifetime' chance for nature to evolve and recover. This paper discusses the nature of which in terms of its beneficial effect on water, air, the ozone layer, and waste deposition. Finally, the article also presents certain suggestive measures by highlighting the role of government, educational institutes, and a person as a whole in the sustenance of nature under pandemic. Based on the reported effect of the pandemic on the environment, it can be inferred that nature, with or without human intervention, can repair itself to some degree. However, human beings need to aware of saving and supporting to nature instead of involving in constant degradation.
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The current global pandemic threatens the food, energy, and water security of households given the economic fallout that it has caused. In this analysis, we present preliminary survey data from respondents in Colorado, United States. We asked how the pandemic and related lockdown orders have impacted the food, energy, and water security of their households. Results imply that, in the near term, households have avoided significant insecurities, yet many have serious concerns moving forward.
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Triclosan (TCS) has been proved to have a harmful effect on human health and ecological environment, especially during the COVID-19 epidemic, when plentiful antibacterial hand sanitizers were discharged. Manganese dioxide (MnO2) showed a good effect on the removal of TCS. The morphology of MnO2 was regulated in this study to increase the active sites for removing TCS and improve the removal effect. The results showed that nanoflower T-MnO2 exhibited best removal efficiency due to its high oxygen vacancy, high Mn3+ content, easily released lattice oxygen and unique tunnel structure which make its Mn-O bond easier to activate. Further study of the mechanism revealed that the process of removing TCS by MnO2 was the first adsorption and then oxidation process and the detailed reaction process was clarified. 3-chlorophenol and 2,4-dichlorophenol were proved to be their oxidative product. Additionally, it was verified that oxidation dominated in the removal of TCS by MnO2 rather than adsorption through Density functional theory (DFT) calculations analysis. It is determined that nanoflower MnO2 was a promising material for removing TCS.