Pollution Of Reservoirs Research Articles

In situ, high-resolution evidence of phosphorus release from sediments controlled by the reductive dissolution of iron-bound phosphorus in a deep reservoir, southwestern China

Reservoirs in southwestern China are encountering the challenge of eutrophication, in which internal phosphorus (P) release from sediments plays an important role. Studies on the high-resolution profile variations and release mechanisms of P at the sediment-water interface (SWI) are rare in these reservoirs until now. In this study, monthly monitoring (Nov 2017 to Oct 2018) using a composite diffusive gradient in thin films (DGT) technique was taken to determine the temporal and vertical profile variations of the DGT-labile P (Fe) at the SWI in Hongfeng Reservoir. The results showed that the average concentrations of the DGT-labile P (Fe) in surface sediments were 0.63 ± 0.24 mg·L−1 and 4.61 ± 1.12 mg·L−1, respectively, with significantly higher concentrations during the summer anoxic period than that during the winter aerobic period. The DGT-labile P (Fe) concentrations in sediments presented a significant positive correlation (r2 > 0.70, p < 0.001), supporting the simultaneous release of reactive P and reactive Fe from the sediments and indicating that the reductive dissolution of iron-bound P dominates the P release from sediments. The release rates of P ranged from 0.01 mg·m−2·d−1 to 0.83 mg·m−2·d−1 (mean: 0.22 mg·m−2·d−1) in Hongfeng Reservoir, which are higher than that in heavily eutrophic shallow lakes in eastern China, such as Lake Taihu. There is a higher P loading, stronger P reactivity, faster P release rates, and higher pollution potential in deep reservoirs of southwestern China than that in natural shallow lakes of eastern China, highlighting the importance and urgency of treating internal P pollution in deep reservoirs. Further studies on the mechanisms and controlling factors of the coupled Fe-P-S cycle in deep reservoirs are desirable in the future, so as to provide a scientific foundation for exploring effective internal P treatment techniques adaptive to deep reservoirs in southwestern China.

Heavy metals bioaccumulation in tissues of &lt;i&gt;Tilapia zilli &lt;/i&gt; as indicators of water pollution in kafinchiri reservoir, Kano - Nigeria

This study assessed the levels of heavy metals accumulation in water, gills and liver of Tilapia zilli fish collected from Kafinchiri water Reservoir for a period of four months with the aim of predicting health risk effect on consumers. Water and Tilapia zilli samples were collected from three different sites along the course of the dam; upstream, midstream and downstream. The concentration of copper, lead, chromium and cadmium in water and their accumulation in the liver and gills of the sampled fishes were determined using atomic absorption spectrophotometer. The results revealed that concentration of dissolved heavy metals in the water ranges from Cu (0.4mg/L- 0.6mg/L), Pb (0.9 mg/L – 1.4mg/L), Cr (undetected - 0.1mg/L) and Cd (0.01mg/L – 0.02mg/L). Accumulation in the gills of tilapia fish ranges from Cu (0.8μg/g – 0.85μg/g), Pb (0.3μg/g -0.9μg/g), Cr (≤0.1μg/g) and Cd was not detected. The accumulation of heavy metals in the liver were Cu (3.0μg/g – 5.4μg/g), Pb (2.7μg/g – 9.6μg/g) and Cr (0.1μg/g – 0.15μg/g) and Cd not detected. Water content chemical analysis indicated that; sampling point B (midstream) had the highest concentration of the heavy metals in which Pb recorded had the highest Bioaccumulation factor (BAF) of 5.76. The mean range of physicochemical parameters studied were temperature (25.90 – 27.37 °C), pH (7.60 – 8.52), DO (6.27 – 7.47mg/L), BOD (2.02 – 3.02mg/L), turbidity (28.05 - 34.00 NTU), electrical conductivity(187.60 – 361.17μS/cm), TDS (211 - 363mg/L), Total dissolved solids, electrical conductivity, turbidity and nitrate recorded significant difference between sites (P<0.05). It was believed that domestic activities around the reservoir is the major contributing factor to the accumulation of toxic heavy metals in fish examined. It is recommended that intervention by relevant authorities is needed curtail potential long term effect of this pollutants in the reservoir. Key words: Heavy metals Pollution, Tilapia zilli , Bioaccumulation, Kafinchiri Reservoir

Nitrogen Removal in Oligotrophic Reservoir Water by a Mixed Aerobic Denitrifying Consortium: Influencing Factors and Immobilization Effects.

Nitrogen pollution in reservoirs has received increasing attention in recent years. Although a number of aerobic denitrifying strains have been isolated to remove nitrogen from eutrophic waters, the situation in oligotrophic water environments has not received significant attention. In this study, a mixed aerobic denitrifying consortium screened from reservoir samples was used to remove nitrogen in an oligotrophic denitrification medium and actual oligotrophic source water. The results showed that the consortium removed 75.32% of nitrate (NO3−-N) and 63.11% of the total nitrogen (TN) in oligotrophic reservoir water during a 24-h aerobic cultivation. More initial carbon source was helpful for simultaneous removal of carbon and nitrogen in the reservoir source water. NO3−-N and TN were still reduced by 60.93% and 46.56% at a lower temperature (10 °C), respectively, though the rates were reduced. Moreover, adding phosphorus promoted bacterial growth and increased TN removal efficiency by around 20%. The performance of the immobilized consortium in source water was also explored. After 6 days of immobilization, approximately 25% of TN in the source water could be removed by the carriers, and the effects could last for at least 9 cycles of reuse. These results provide a good reference for the use of aerobic denitrifiers in oligotrophic reservoirs.

Lviv Reservoirs: Current Geo-Ecological Status and Opportunities for its Improvement

Purpose of the work is to characterize the geo-ecological condition of the reservoirs in Lviv in order to develop recommendations for the protection, conservation and enhancement of their functional use. Methods. Field, cartographic, historical, analysis and synthesis. Results. The geo-ecological state of modern reservoirs of Lviv has been investigated. Water pollution of represented reservoirs has been analyzed according to the fund and statistical materials. In the course of the field researches the physical parameters of the water condition have been analyzed, sources of pollution of reservoirs, clogging and overall assessment of coastal water protection strip shave been identified. Most of the reservoirs of Lviv are characterized by littering of the coastal strip, recreational impact, proximity to roads and residential buildings. The color of the water in the majority of the reservoirs is grayish-yellow, the transparency of the water is low, the smell is marsh or earthy-grassy. Ten of the twenty-three reservoirs under study have strong and over-eutrophication. In summer, some are completely overgrown with algae. The condition of the basin in 70% of Lviv reservoirs is natural. This contributes to the additional intake of pollutants from the catchment area. Ponds where the basin is covered with an artificial surface (mainly concrete) have better water quality. In particular, Levandivskyi has become the only one to have clean water at the beginning of 2019. In recent years, the water reservoirs of the city have been significantly shallow, due to the construction of catchment areas and the discharge of rainwater to the general sewer. Conclusions. Irrational use of city reservoirs leads to water pollution, siltation and overgrowth of urban reservoirs, rapid eutrophication, clogging, etc. Reservoirs near leased restaurants and recreational facilities are in the best condition. The ponds located in park areas (Stryiskyipark, Pohulianka, Shevchenko-ethnopark, Piskovi Ozera) are in a satisfactory geo-ecological state. The most neglected are the reservoirs of former industrial enterprises, which are under control of district administrations. Taking into consideration the multifunctional importance of reservoirs for the city, recommendations have been developed to improve their geo-ecological state, mainly they are organizational (monitoring the status of reservoirs, introduction of ecological passport of the reservoir, increasing control), technical (separation of rain and municipal sewage, technical care), educational (stands, eco-actions, festivals) measures.

Application of ground-based research methods for the diagnostics of pollution and eutrophication of water reservoirs of the Kirov region

Application of ground-based research methods for the diagnostics of pollution and eutrophication of water reservoirs of the Kirov region

水库污染来源解析方法研究——以南方某水库为例

水库污染来源解析方法研究——以南方某水库为例

Оценка биогенного загрязнения воды Павловского водохранилища на реке Уфа

The article describes the nutrients’ regime formation in the Pavlovsk Reservoir on the Ufa River. The reservoir is the main drinking water source for Ufa with more than a million population. Based on statistical data on the population, livestock, the amount of mineral fertilizers input, and the number of recreation facilities’ clients in the municipalities in the reservoir basin potentially polluting the Pavlovsk reservoir, pollution volumes from municipal/domestic, and agricultural discharges, as well as recreational loads have been determined. The authors have calculated the nitrogen, phosphorus, and potassium input to the Pavlovsk Reservoir, they have determined dynamics of the reservoir pollution with nutrients. A comparative analysis of nutrient inputs for more than 30 years of observation has been made (from 1987 to 2018).

Створення карт землекористування органічнічних господарств за використання геоінформаційних систем

Створення карт землекористування органічнічних господарств за використання геоінформаційних систем

MAIN ASPECTS OF MINIMIZATION OF POPULATION HEALTH RISKS CAUSED BY PHARMACEUTICAL POLLUTION OF SURFACE SOURCES OF DRINKING WATER SUPPLY

Introduction. The list of ecological problems has recently enlarged by another one: environment pollution, and first of all, of surface water basins, by so-called «emerging contaminants». Based on the findings of research centers in RF, European countries and in the USA an independent class of human-environment pollutants of anthropogenic origin named «Pharmpollutants», was identified. Discussion. It can be related to the growing scale of world pharmaceutical production output (average annual growth about 4.6 %), to the development of up-to-date technologies in animal and poultry breeding, as well as to increased use of pharmaceuticals among the population. Systematization and analysis of data on the effect of unsanctioned and uncontrolled medical product disposal on quality of surface sources of drinking water supply, development of recommendations for health risk minimization among population exposed to potential intake of pharmaceutical traces contained in surface water basins and drinking water, based on available findings, and defining priority areas for the development of statutory-regulatory and procedural documents, - were the objectives of our study. Development of the recommendations can improve regulatory and procedural base and will contribute to the development of specific measures to prevent the transfer of medicinal products into the environment. Conclusion. National and foreign research findings on the topic of interest are reviewed, and potential routes of pharmaceuticals transfer into environmental objects are described. The scope of problems is outlined, ways of coping with problems of water reservoir pollution by pharmpollutants and health risk minimization for population exposed to pharmaceuticals present in drinking water, are suggested; recommendations for minimization of population health risks caused by environmental pharmaceuticals have been prepared.

Purification of wastewater from the ions of copper, zinc, and lead using an electrolysis method

Heavy metals penetrate water reservoirs as a result of natural and anthropogenic processes, thereby accumulating in soil, bottom sediment, sludge, and can further migrate into groundwater and surface water. The main sources of heavy metals penetration into natural waters are the insufficiently treated waste waters from many branches of industry. That renders relevance to the problem of removing heavy metals from wastewater in order to prevent excessive pollution of water reservoirs. Among existing methods of water purification from heavy metals’ ions at significant volumes of industrial wastewater, the electrochemical methods are rather promising. The advantage of this method is a possibility to recycle the used regeneration solutions with obtaining metals that are suitable for reuse. This paper reports results of research into the processes of electrochemical removal of heavy metals’ cations from diluted aqueous solutions in one­and two­chamber electrolyzers. When conducting the study in a two­chamber electrolyzer, the anode and cathode regions were separated by the anion­exchanging membrane MA­40. A dependence of the influence of hardness, solutions’ pH, anodic current density, and the duration of electrolysis on efficiency of the removal of heavy metals’ ions was investigated. It is shown that the ions of zinc, copper and lead are effectively removed from aqueous solutions using the electrolysis at a starting concentration of 10 mg/dm3. It was established that at the low concentrations of ions, the output for current, when reducing metals, reached (4–20)·10­4 % and changed little with concentration. It was determined that the efficiency of water purification from heavy metals’ ions using electrolysis increases with an increase in pH of the medium and with a decrease in the hardness of water. In the two­chamber electrolyzers, these factors exert almost no effect on purification efficiency. The paper shows the prospect of using electrolysis for the selective removal of heavy metals from tap, softened and natural water. A given purification method makes it possible to not only post­clean wastewater to the maximally permissible concentrations, but also enables the purification of water from natural water bodies to the quality of drinking water

Experimental study on shale fracturing assisted by low-temperature freezing

Under the cold impact of liquid nitrogen, the shale suffers from the significant freezing damage, which provides the possibility of liquid nitrogen fracturing. Moreover, shale fracturing assisted by liquid nitrogen can effectively reduce reservoir pollution. In this paper, the hydraulic fracturing experiments of natural shale samples frozen by liquid nitrogen were carried out to investigate the factors affecting the crack propagation of shale after low temperature fracturing. The results show that a large number of cracks or macropores form inside the natural shale sample after freezing treatment by liquid nitrogen. The fracture pressure of the shale decreases with increasing impact time at the beginning of the immersion time, and remains substantially stable after an immersion of 2 hours. When the freezing time increases, the crack initiation time increases accordingly. After low temperature impact, the fracture pressure of shale decreases with the increase of stress difference, but the cracking times vary with the stress with obvious regularity. It is easier to form main fracture with larger displacement on the premise of well-developed shale bedding.

Fate of microbial pollutants and evolution of antibiotic resistance in three types of soil amended with swine slurry

Swine waste is a reservoir of microbial pollutants, including pathogens, antibiotic resistance genes (ARGs) and antibiotic resistant bacteria (ARB); therefore, soil fertilized with swine waste is an essential pathway for the dissemination of microbial pollutants from concentrated swine farms to the public. To rationalize the intervals of swine wastes application and investigate the effects of soil type on the occurrences of microbial pollutants and antibiotic resistance, pot experiments were conducted with three typical soils, humic acrisol, calcaric cambisols and histosols, being collected from south, northwest and northeast China (soil-R, soil-Y and soil-B, respectively). The soils were amended with swine slurry, digestate and chemical fertilizers and then conducted for 172 days. The influence of microbial pollutants and antibiotic resistance in soil posed by digestate application was similar to that of the chemical fertilizers, while swine slurry posed high risks to the soil. Soil-B which had the highest organic matter and neutral pH was least influenced by the swine slurry amendment. tetG, tetM and ermF were persistent ARGs in the slurry treated soil, and their decay rates fitted to first-order kinetics in the order soil-B> soil-Y > soil-R. Putative pathogens showed strong correlations with ARGs, suggesting a risk of dissemination. The initial 43–82 days was the active phase of microbial pollution in slurry treated soil, during which time heavy metals, moisture content, total organic carbon and the microbial community were key factors contributing to changes in antibiotic resistance. Fertilization intervals of livestock wastes should be lengthened over the ARG active phase.

Analysis of ethanol as plug removal agent in near borehole zones for coal bed methane

As coal bed methane (CBM) gas production can be reduced by reservoir pollution within near borehole zones, the feasibility of the use of ethanol as a plug removal agent and its impact on gas production are discussed in this paper. Four representative samples of Yima, Datong, Shaqu, and Yangquan coals were selected across a range of different ranks and were soaked with ethanol for experiments, and their change characteristics before and after treatment were compared using optical microscopy, mercury intrusion, and isothermal adsorption techniques. The results of this analysis revealed that the pore volume and porosity of coal samples increased following ethanol treatment, while the affinity for methane was significantly reduced. The use of ethanol was also advantageous because it reduced water lock and damage. This research showed that the use of ethanol as a plug removal agent in CBM near borehole zones has significant potential engineering applications.

Contaminación y disminución del embalse El Laguito, Costa Rica, por aguas urbanas: encuesta y físico-química

La contaminación y la reducción del tamaño de los reservorios de agua tienen un impacto importante en la biodiversidad tropical. El Laguito de la Sede de Occidente, en Alajuela, Costa Rica, es un embalse artificial construido con fines recreativos, pero funciona actualmente como reservorio de agua de lluvia para prevenir las inundaciones que se presentan en las zonas bajas de la microcuenca. En los últimos años, se ha reducido su tamaño y ha perdido el espejo de agua y la capacidad del depósito es muy pequeña. Para evaluar el manejo del agua por parte de los vecinos, encuestamos los 92 hogares cercanos que descargan aguas residuales a El Laguito a través de un alcantarillado y una tubería. También tomamos muestras de agua en abril y setiembre de 2015 y julio de 2016 para el análisis fisicoquímico estándar. Los vecinos desperdician agua y el 80% de las casas descargan las aguas crudas sin tratar en el sistema. Un programa educativo mejoraría las prácticas en el área y beneficiaría al yacimiento y los organismos asociados.

Isomer-specific biotransformation of perfluoroalkyl sulfonamide compounds in aerobic soil

As an important reservoir of pollutants, soil may play a critical role in altering isomer ratios of perfluorooctane sulfonate (PFOS) or PFOS precursors (PrePFOS) via microbial processes, but this possibility has not yet been investigated, as well as the feasibility of using PFOS isomer ratio for source tracking in PFOS contaminated sites. In the present study, N‑ethyl perfluorooctane sulfonamide ethanol (EtFOSE) of the technical grade was incubated in soil microcosms for 105 days to examine isomer-specific transformation processes. Experimental data combined with a mathematical model suggest new biotransformation pathways leading to PFOS, including a direct pathway to produce PFOS via hydrolysis of the sulfonamide bond. A similar rate of biotransformation was observed for EtFOSE with an estimated half-life of 8.7 and 9.6 days for the branched and linear isomers, respectively, without statistical difference. Two transformation intermediates, N‑ethyl perfluorooctanoic acid (EtFOSAA) and perfluorooctane sulfonamide (FOSA), also showed preferential biotransformation of branched isomers. On the contrary, one intermediate N‑ethyl perfluorooctane sulfonamide (EtFOSA) showed the preferred transformation of the linear isomer with an estimated half-life of 80.8 and 11.2 days for the branched and linear isomers, respectively. As PFOS is likely to be generated through more than one pathway or one precursor, its final isomer ratio is collectively determined by several upstream reactions, each having specific isomer-specific transformation kinetics. Though the soil showed enrichment of branched PFOS isomers during the 4-month incubation, compared to PFOS standards, some uncertainty arises in concluding preferential generation of branched PFOS from its precursors, due to the lack of standards for branched PreFOS. The complexity of isomer-specific biotransformation only reinforced the challenge of applying the PFOS isomer ratio for source tracking in environmental microbial systems.

Heavy metal pollution in reservoirs in the hilly area of southern China: Distribution, source apportionment and health risk assessment

Reservoirs play more and more important role in providing potable water in many developing countries, including the China. In the present study, pollution characteristics, source and health risk of dissolved heavy metals in 19 representative reservoirs in the hilly area of southern China were investigated. The results presented great spatial heterogeneity in heavy metal concentrations among the studied reservoirs due to the disturbances by different anthropogenic activities. Several reservoirs had significantly higher concentrations of heavy metals compared with others, FengTan (FT) reservoir (0.34μg/L in dry season), Cr in reservoirs of HuangShi (HS) and ZheLin (ZL) with values of 4.16μg/L and 3.45μg/L in dry season respectively, and Al in reservoirs of JiaoKou (JK), GuTian (GT) and DouShui (DS) with values of 1011μg/L, 1036μg/L and 1001μg/L in wet season, respectively. Furthermore, there was a great difference in the seasonal variation of heavy metals, especially for Al and Pb in wet season characterized with relatively high values of 643μg/L and 0.67μg/L, respectively. Accordingly, Al was identified with a great health risk to living beings in view of its mean value in wet season, which greatly exceeded the criteria for drinking water of China, WHO and US EPA. Furthermore, As might be the greatest concern of health risk in this region considering its high carcinogenic risk to the local residents around the reservoirs of OuYangHai (OYH), DS, ZhiXi (ZX) and HS. Multivariate statistical analysis suggested that there was great heterogeneity in the sources of these heavy metals in the hilly area of southern China. Therefore, specific measures, such as controls on point source pollution control and tailings, should be taken for maintaining drinking water safety and aquatic ecosystem health.

Clothing as a transport vector for airborne particles: Chamber study.

Strong evidence suggests that clothing serves as a reservoir of chemical pollutants and particles, including bioaerosols, which may have health significance. However, little is known about the role that clothing may play as a transport vector for inhaled airborne particles. Here, we contribute toward bridging the knowledge gap by conducting experiments to investigate clothing release fraction (CRF), determined as the size-dependent ratio of released to deposited particulate matter in the diameter range 0.5-10μm. In a fully controlled chamber with low background particle levels, we deployed a programmable robot to reproducibly quantify the size-dependent CRF as a function of motion type and intensity, dust loadings, and activity duration. On average, 0.3%-3% of deposited particles were subsequently released with fabric motion, confirming that clothing can act as a vehicle for transporting airborne particles. The CRF increased with the vigor of movement and with dust loading. Rubbing and shaking the fabric were more effective than fabric stretching in resuspending particles. We also found that most of the release happened quickly after the onset of the resuspension activity. Particle size substantially influenced the CRF, with larger particles exhibiting higher values.

Does material circularity rhyme with environmental efficiency? Case studies on used tires

Abstract The need for circularity assessment tools to prevent undesirable effects (e.g. recycling processes requiring more energy) is gaining recognition. Preserving resources and relieving pollution reservoirs are both necessary conditions to achieve a sustainable circular economy (CE), and the corresponding assessment tools should be selected accordingly. We chose life cycle assessment (LCA) and the Material Circularity Indicator (MCI). In this paper, we tested the tools through two case studies from the tire industry. The Brazilian case proposes three scenarios to process used tires: baseline, retreading and regrooving. The European case suggests collecting secondary material from end-of-life (EoL) tires to produce recycled content (RC) at 4% and 10% rates. These rates were chosen to illustrate the change in tire performance in the use phase. We propose an approach to discuss MCI and LCA results that identifies four pathways toward or away from the CE goal: coupling, decoupling, trade-off on resources or trade-off on reservoirs. The case studies reveal that extending lifetime through retreading and introducing recycled material improves the MCI of a tire but do not necessarily improve impacts on human health and ecosystems. Also, discrepancies in the results between the MCI and the LCA's resource indicator highlight relevant issues for new CE experts seeking to design assessment tools. Even though LCA provides a broader scope than the MCI, it still reflects a relative contribution to environmental sustainability while the MCI focuses on micro-scale improvements in resource use efficiency.

Risk assessment of pesticides in estuaries: a review addressing the persistence of an old problem in complex environments

Estuaries, coastal lagoons and other transition ecosystems tend to become the ultimate reservoirs of pollutants transported by continental runoff, among which pesticides constitute the class of most concern. High amounts of dissolved and particulated organic matter greatly contribute to the accumulation of pesticides that eventually become trapped in sediments or find their way along food chains. Perhaps not so surprisingly, it is common to find elevated levels of pesticides in estuarine sediments decades after their embargo. Still, it remains challenging to address ecotoxicity in circumstances that invariably imply mixtures of contaminants and multiple factors affecting bioavailability. Despite advances in methods for detecting pesticides in waters, sediments and organisms, chemical data alone are insufficient to predict risk. Many researchers have been opting for ex situ bioassays that mimic the concentrations of pesticides in estuarine waters and sediments using a range of ecologically relevant model organisms, with emphasis on fish, molluscs and crustaceans. These experimental procedures unravelled novel risk factors and important insights on toxicological mechanisms, albeit with some prejudice of ecological relevance. On the other hand, in situ bioassays, translocation experiments and passive biomonitoring strive to spot causality through an intricate mesh of confounding factors and cocktails of pollutants. Seemingly, the most informative works are integrative approaches that combine different assessment strategies, multiple endpoints and advanced computational and geographical models to determine risk. State-of-art System Biology approaches combining high-content screening approaches involving "omics" and bioinformatics, can assist discovering and predicting novel Adverse Outcome Pathways that better reflect the cumulative risk of persisting and emerging pesticides among the wide range of stressors that affect estuaries.

Characterizing the purification effect on the ecological reservoir and its influencing factors

水库水体污染控制及富营养化防治是保障城市原水供应安全的重要环节.本研究针对金泽水源水库太浦河来水氮、磷浓度较高的特点，自行设计建设了5个面积均为240 m²的生态净化模拟试验池（A、B、C、D和对照）开展模拟试验，研究了不同水库形态、水生植物种植面积比例及种植方式对水体氮、磷污染物去除的影响.结果表明，通过模拟试验池的生态净化，原水中铵态氮（NH₄⁺-N）、总磷（TP）和总氮（TN）的平均去除率分别为50.36%、53.73%和22.25%，C池TN和NH₄⁺-N去除率最高分别达到了24.97%和54.61%，D池TP去除率最高，达到62.16%，水体溶解氧（DO）平均浓度提高了1.11 mg/L，平均透明度提高了27.6 cm，均显著高于对照池.水库形态结构、水生植物面积比例及种植方式对水体氮、磷污染物净化效果影响明显，增大水库浅水区面积能有效提高对水体氮、磷污染物的去除能力，增加水生植物种植面积能有效提高水体氮污染物去除和DO、透明度的提升能力，采用浮床种植方式能有效提高水体磷污染物去除和透明度提升能力.本研究结果能为金泽水源水库及其他类似水库的设计和建设提供科学依据.;Water pollution and eutrophication control in reservoirs are important to ensure the safety of urban water supply. Four ecological purification pilot reservoirs (A, B, C and D) and one controlled reservoir with 240 m² area were constructed in Linjiang Water Plant characterized by high concentrations of nitrogen and phosphorus. The effects of different reservoir configurations, the proportion of aquatic plant planting area, and planting methods on the removal of total nitrogen (TN) and total phosphorus (TP) were determined according to the pilot reserves. The results showed that the average removal rates of ammonium nitrogen (NH₄⁺-N), TP and TN for the inflow water were 50.36%, 53.73% and 22.25% by the ecological purification of the pilot reservoirs, respectively; C reservoir had the highest removal rates of TN and NH₄⁺-N of 24.97% and 54.61%, respectively; the highest removal rate of TP was found at D reservoir of 62.16%; the average dissolved oxygen (DO) concentration and transparency of the four pilot reservoirs increased by 1.11 mg/L and 27.6 cm, respectively, which was significantly higher than those of the controlled reservoir. The shape and structure of the reservoirs, the proportion of aquatic plant planting area, and the planting methods had obvious influences on the purification of TN and TP. The increase of shallow water area can effectively improve the removal of TN and TP; the increase of the planting area of aquatic plants can effectively increase DO concentration, improve the removal of TN, and enhance the transparency; the planting method of floating bed can effectively promote the removal of TP and enhance the transparency. The results of this study provide a scientific basis for the design and construction of Jinze Reservoir and other similar reservoirs as water sources.