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1

Influence of leachate on quality of underground waters

100%
Talalaj I. A., Dzienis L.
Polish Journal of Environmental Studies
|
2007
|
tom 16
|
nr 1
Evaluation of the influence of leachate on underground waters in the vicinity of a chosen landfill is examined in this paper. The purpose of the research was to give information on maximum pollutants concentrations which could penetrate ground and water subsoil and its influence on the area adjacent to the landfill. Scale and range of pollution in the examined area have been observed in 7 piezometer test wells and 4 nearest household wells and analogous parameters have been determined for leachate. To evaluate the influence of leachate on examined ground waters a method of multidimensional factor analysis with Varimax rotation was used.
2
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Efficiency of removal of heavy metals from municipal landfill leachate

86%
Koc-Jurczyk J., Jurczyk L.
Journal of Elementology
|
2007
|
tom 12
|
nr 4
327-334
The aim of this study was to determine the rate of removal of heavy metals depending on a treatment method applied to leachate from a municipal waste landfill. After the biological treatment, concentrations of Cu, Zn and Ni were observed to have increased. Application of the reagent Fenton caused further growth in Cu, Zn, and also Pb concentrations. The highest concentrations of Cu, Zn and Ni were observed when the Fe2+: H2O2 ratio in Fenton was 1:3. The lowest concentrations of these heavy metals were observed at a 1:5 ratio of Fe2+ : H2O2. The concentration lead, for example, was over 30-fold higher than in raw leachate. There was not correlation between the COD values in raw leachate or in biologically or chemically processed leachate and the concentrations of the analysed metals.
3

Effects of application of compost produced from organic wastes on some soil properties and chemical composition of leachates

86%
Klasa A., Nogalska A.
Electronic Journal of Polish Agricultural Universities. Series Environmental Development
|
2013
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tom 16
|
nr 2
4
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Application of column tests and electrical resistivity methods for leachate transport monitoring

86%
Wychowaniak D., Zawadzki L., Lech M.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
|
2015
|
tom 47
|
nr 3
Development of the human civilization leads to the pollution of environment. One of the contamination which are a real threat to soil and groundwater are leachates from landfills. In this paper the solute transport through soil was considered. For this purpose, the laboratory column tests of chlorides tracer and leachates transport on two soil samples have been carried out. Furthermore, the electrical resistivity method was applied as auxiliary tool to follow the movements of solute through the soil column what allowed to compare between the results obtained with column test method and electrical resistivity measurements. Breakthrough curves obtained by conductivity and resistivity methods represents similar trends which leads to the conclusion about the suitability of electrical resistivity methods for contamination transport monitoring in soil-water systems.
5
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Electrical resistivity methods for landfill monitoring

86%
Zawadzki L., Wychowaniak D., Lech M.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
|
2018
|
tom 50
|
nr 2
6

Physico-chemical and toxicological characteristics of leachates from MSW landfills

86%
Slomczynska B., Slomczynski T.
Polish Journal of Environmental Studies
|
2004
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tom 13
|
nr 6
This article contains a review of literature on the quantity and physico – chemical characteristics of leachates from municipal solid waste (MSW) landfills. The state of knowledge on estimation of hazard landfills through toxicity testing of leachates by use of aquatic organisms is also presented. There is little information in Poland regarding the harmful effects of leachate waters on aquatic biocenoses.
7
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Effect of some amendments on leachate properties of a calcareous saline-sodic soil

72%
Yazdanpanah N., Pazira E., Neshat A., Naghavi H., Moezi A., Mahmoodabadi M.
International Agrophysics
|
2011
|
tom 25
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nr 3
8
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Chemical composition of leachates on exploited landfill site

72%
Przydatek G.
Infrastruktura i Ekologia Terenów Wiejskich
|
2014
|
nr IV/1
Results of analyses of underground waters on a municipal landfill site conducted in 2004-2008, prior to leachate cleaning were presented and discussed in the paper. The sewage quality analysis comprised pH, electrolytic conductivity, TOC, Cr+6, Pb, Cd, Cu, Hg, Zn and PAHs. Results of leachate water testing were compared with standard values and subjected to comparative analysis taking into consideration also atmospheric precipitation amount. The aim of the paper was to assess the leachate water quality in conditions of exploited municipal landfill. The analyzed waters were characterized by variability of composition evidenced by increasing pH values, electrolytic conductivity and heavy metal concentrations (Cr, Hg) total organic carbon (TOC) and PAHs, but also by a decline in heavy metal contents (Pb, Cd, Cu and Zn).
9
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Influence of filling in an SBR reactor on the treatment of leachate from municipal landfills

72%
Koc-Jurczyk J., Jurczyk L.
Journal of Elementology
|
2007
|
tom 12
|
nr 4
317-325
The aim of the present study was to determine the influence of solid filling on the effectiveness of removal of organic substances (as COD) and ammonium from leachate from municipal landfills in SBR and SBBR reactors. The reactors worked on a laboratory scale reactors working under aerobic conditions at constant hydraulic retention time (HRT) of 3 d.COD values in outflow were similar: on average 635 mg O2·dm-3 (SBR) and 646 mg O2·dm-3 (SBBR). Regardless of the presence or absence of filling, nitrate dominated in the effluent. The average concentration was 693 mg NNQ3·dm3·h-1 in SBR and 699 mg NNQ3·dm3 in SBBR. The concentrations of ammonium and nitrite were low, less than 2.9 mg NNH4·dm-3 and 0.5 mg NNO2·dm-3 (SBR), and 3.2 mg NNH4·dm-3 and 0.3 mg NNO2·dm-3 (SBBR). The results indicate that the presence of solid filling did not influence the effectiveness of nitrification in activated sludge.
10
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Leachate characterization and leachate pollution index from landfill dump sites in Warri Metropolis, Nigeria

72%
Godwin A., Oghenekohwiroro E.
International Letters of Natural Sciences
|
2016
|
tom 57
The paucity of standard engineered landfills in Nigeria has given rise to the proliferation of open waste dumpsites. The environment can be impacted by leachates from these dumpsites if not properly managed. This study assessed the characteristics of leachates from three open dumpsites in Warri Metropolis and its contamination potential using leachate pollution index (LPI). The dump sites had low pH with acidic level lower than the recommended limit. The calculated LPI values of the three sites ranges from 6.377 to 7.438. These values are low when compared to open dumpsites in other metropolitan areas of similar climatic conditions. The low value of LPI for leachate indicates relatively lower contaminant potential due to low concentrations of heavy metals, relatively young age of the landfill as well as low population and organic origin of the wastes. The calculated low LPI value does not in any way preclude the continuous monitoring of the dumpsites as the values recorded are just slightly below the threshold level. It is recommended that there should be an upgrade of all open dumpsites to a standard engineered landfill with a robust and effective monitoring put to curtail future release of deleterious materials from these dumpsites.
11

Technological and toxicological aspects of the coagulation of leachates from municipal solid waste landfill

72%
Wasowski J., Slomczynska B., Slomczynski T.
Archiwum Ochrony Środowiska
|
2006
|
tom 32
|
nr 2
12

The influence of hydraulic retention time and sludge age on the kinetics of nitrogen removal from leachate in SBR

72%
Klimiuk E., Kulikowska D.
Polish Journal of Environmental Studies
|
2006
|
tom 15
|
nr 2
In the present study the influence of hydraulic retention time (HRT) in SBR and sludge age (SRT) on the effectiveness of nitrogen removal from leachate was investigated. Two series were performed. In each series, experiments were carried out in four SBR operated in parallel at HRT 12, 6, 3 and 2d, respectively. Each series differed in sludge age. In series 1, SRT decreased from 51 to 17d with shortening of HRT, while in series 2 it was about 2 times shorter. In each series the amount of nitrogen used on biomass synthesis, removal of nitrogen in denitrification and losses of ammonium during the aeration phase were estimated on the basis of material balance for all nitrogen forms in SBR cycle. It was shown that nitrogen consumption on biosynthesis was decreased linearly to the HRT increase. In series 1, the rate of ammonium nitrogen removal increased from 5.38 mgNNH4/g VSS·h to 7.36 mg NNH4/g VSS·h with HRT shortening from 12 to 3d, respectively. In series 2 the rate of ammonium nitrogen removal was nearly constant, regardless of HRT and on average it was 1.74 mg NNH4/g VSS·h. The losses of ammonium nitrogen in series 1 increased from 8.2 mg N/dm³.cycle in SBR 1 to 33.4 mg N/dm³.cycle in SBR 4, while in series 2 it was almost 2 times lower.
13

Dynamics of dissolved nutrients in forest floor leachates: comparison of a natural forest ecosystem with monoculture tree species plantations in south-east Ethiopia

58%
Ashagrie Y., Zech W.
International Journal of Ecohydrology and Hydrobiology
|
2010
|
tom 10
|
nr 2-4
The dynamics of nutrients in water passing through the forest floors of two plantation forests (Cupressus lusitanica and Eucalyptus globulus) and an adjacent natural forest were monitored over a one year period at Munesa, Ethiopia. The results showed that, in all forest types, after K, Ca and Cl were the most abundant nutrients leached from the forest floor to the mineral soil. The concentration of NO3–N in the natural forest was about 10 times higher than that of NH4–N, but 8 and 3 times higher than that of NH4–N under Eucalyptus and Cupressus, respectively. No significant differences in concentrations of most of the nutrients were observed among forest types, but magnesium and NO3–N were significantly higher under the natural forest and Eucalyptus than under Cupressus. Except for NH4–N, which was depleted in relation to throughfall in the natural forest, the concentrations of all other nutrients were enriched in litter leachate in relation to both rainfall and throughfall. However, with the exceptions of NO3–N in all forest types, Ca under Cupressus and PO4–P under Cupressus and Eucalyptus, all measured nutrient fluxes from the forest floor to the mineral soil decreased in relation to throughfall fluxes. Generally, the results show that despite the differences in tree species composition among the forest types the organic layer acted as a sink for most of the nutrients coming via throughfall.
14

Straty wody i składników pokarmowych w systemie nawadniania kroplowego upraw szklarniowych

58%
Zarnowiec W., Bogdal A., Rajda W.
Acta Scientiarum Polonorum. Formatio Circumiectus
|
2014
|
tom 13
|
nr 4
W pracy określono straty wody i składników pokarmowych w systemie nawadniania kroplowego w szklarni, przy uprawie róż na substracie torfowym. Odpływy mierzono metodą naczynia cechowanego w trzech terminach, w których stosowano 2 lub 3 cykle nawadniania różnymi dawkami. Ponadto w laboratorium metodami referencyjnymi oznaczano w próbach uśrednionych pożywki i odcieków, stężenia 8 składników pokarmowych: N–NH4+, N–NO2–, N–NO3 –, PO4 3–, K+, SO4 2–, Ca2+ oraz Mg2+. Na podstawie pomierzonych objętości odcieków i stężeń zawartych w nich składników pokarmowych, z drugiej zaś strony w oparciu o objętości i stężenia składników w dostarczanej roślinom pożywce obliczono odpowiednio ładunki odprowadzane i wprowadzane do systemu, a z ich ilorazu ustalono procent strat składników pokarmowych. Analiza wyników badań wykazała duże zróżnicowanie objętości odpływu odcieków w zależności od wielkości nawadniającej dawki polewowej lub dobowej oraz ze względu na liczbę cykli realizowanych w ciągu dnia. W pracy wykazano potencjalne możliwości zmniejszenia strat wody w systemie nawadniania, które w zależności od wariantu obliczeniowego wyniosły w warunkach doświadczenia od 21,6 do 99,8%. Stwierdzono również wzrost stężeń Mg2+, SO4 2–, K+, N–NO2– w stosunku do pożywki podawanej roślinom, czyli odnotowano tzw. zjawisko zatężania odcieków. Ze względu na to zjawisko w przypadku tych samych 4 składników pokarmowych stwierdzono średnio największe, bo 70–90% straty ilościowe. Należy jednak podkreślić, że straty składników pokarmowych wystąpiły w każdym terminie badawczym i dotyczyły w różnym stopniu wszystkich badanych składników.
15

Simulation of aerobic stabilisation of municipal landfills in lysimeters

58%
Krzystek L., Zieleniewska A., Ledakowicz S., Kahle H.-J.
Electronic Journal of Polish Agricultural Universities. Series: Biotechnology
|
2003
|
tom 06
|
nr 2
16
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Phytotoxicity and potential genotoxicity of Radiowo municipal landfill leachate

58%
Obidoska G., Jasinska D.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
|
2008
|
tom 40
17

Some aspects of the landfill leachate treatment

58%
Suchecka T., Biernacka E., Piatkiewicz W., Gradon L.
Annals of Warsaw Agricultural University. Land Reclamation
|
2005
|
tom 36
18
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Anthropogenic waste products utilization for old landfills rehabilitation

58%
Koda E.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
|
2012
|
tom 44
|
nr 1
The paper presents remedial problems of old large sanitary landfi lls, particularly of embankments type. One of the main problems on a such kind landfills is to secure slope stability. The stability reinforcement methods consist of retaining walls, berms (constructed with selected waste materials), geogrids and mattress constructed of scraped tires. Metallurgical slag backfill material can be used for filters protection of leachate drainage and for technological roads construction on the landfill. The applied slope reinforcements and assurance of the proper performance of the leachate drainage in the landfill are of the greatest importance for the landfill slope stability and further use of landfill areas. Above mentioned aspects are described on the example of large landfill, localized nearby Warsaw. Radiowo landfill was founded in 1962, and now is at the end of the period of its operating and therefore remedial works have been undertaken there. In the future Radiowo landfill area will be adopted for recreation and sports purposes (view points, skiing, cycle roads etc.).
19

Solids waste gas recovery under different water conditions

58%
Filipkowska U., Agopsowicz M. H.
Polish Journal of Environmental Studies
|
2004
|
tom 13
|
nr 6
This papers deals with the determination of the influence of water and landfill leachate dosage on the quality and quantity of municipal waste biogas. Wastes used in the experiment were collected from a municipal landfill located in Łęgajny near Olsztyn. Gas production (total gas volume, production rates and methane concentration) was monitored for 311 days. The quality and quantity of biogas were determined as for waste deposition without irrigation and with irrigation with the addition of water and leachate (the amount was typical for the average atmospheric precipitation and double amount of atmospheric precipitation). Moreover, the researches were carried out for totally flooded wastes. It was shown that there is an influence of water conditions on the biogas production. The lowest biogas production was observed for waste deposition without water and leachate irrigation (dry wastes) and for totally flooded wastes. Obtained biogas characterized the lowest amount of methane. The highest effectiveness of biogas production and its best composition was achieved for wastes irrigated by leachate in the amount corresponded to atmospheric precipitation. Biogas contained about 50% of methane. Research showed that there is the possibility of biochemical processes controlling in waste heap (e.g. in energy piles); however, there is then the necessity of optimization of the dosage and kind of recirculated medium.
20
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Effects of land use on leaching of nitrate-N, ammonium-N and phosphate in relation to stained surface area

51%
Lipiec J., Nosalewicz A., Siczek A., Kotowska U.
International Agrophysics
|
2011
|
tom 25
|
nr 2
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