Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "reverse osmosis" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 41
Tytuł:
Quality of Leachate From Landfill with Reverse Osmosis Concentrate Recirculation
Autorzy:
Tałałaj, Izabela Anna
Powiązania:
https://bibliotekanauki.pl/articles/124364.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
landfilling
leachate
concentrate recirculation
reverse osmosis
Opis:
The purpose of this study was to determine the changes of leachate quality on a selected municipal landfill with recirculation of concentrate from the reverse osmosis (RO) process. The research was carried out on an exploited municipal waste landfill, from which the samples of leachate, permeate and concentrate were collected in the years 2013-2015. The obtained samples were subjected to the physicochemical analysis, including the determination of general pollution parameters as well as organic and inorganic indicators. The obtained results showed that the concentrate recirculation resulted in intensification of the degradation processes in the waste body, expressed by the increase of biodegradability rate (BOD5/COD) and the value of conductivity and dissolved solids. Over time, the value of conductivity and dissolved solids stabilized; however, they reached the values higher than in conventional landfills. A characteristic feature of the long-recirculation landfills was a continuous increase in the concentration of ammonia nitrogen and COD values in the leachate.
Źródło:
Journal of Ecological Engineering; 2019, 20, 8; 205-211
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
RO Reject Water Management Techniques
Autorzy:
Kumar, Navin
Bharadwaj, Vidushi
Mitra, Shikha
Bose, Debajyoti
Powiązania:
https://bibliotekanauki.pl/articles/1113586.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
passive oxidation
phytoremediation
reverse osmosis
water treatment
Opis:
In the last five decades, the variation for increase in population and decrease in available clean water is noticeable. To meet with growing water requirements, along with the wastewater from municipal sewage treatment plants, it is critical to consider the reuse of industrial wastewater wherever possible. In the Indian context, this has already been started in some of the big industries, especially in metro cities and it must be implemented at all level possible industries. Ultrafiltration (UF), reverse-osmosis (RO) and membrane bioreactors (MBR) will be integral parts of this. Waste water reuse is not only a necessity, it also provides several eco-friendly benefits.
Źródło:
World News of Natural Sciences; 2017, 14; 1-10
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of Resource-Saving Technologies in the Use of Sedimentation Inhibitors for Reverse Osmosis Installations
Autorzy:
Trus, Inna
Gomelya, Mukola
Skiba, Margarita
Pylypenko, Tetiana
Krysenko, Tamara
Powiązania:
https://bibliotekanauki.pl/articles/2025383.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
reverse osmosis
concentrate
membrane
permeate
productivity
selectivity
antiscalant
Opis:
The processes of desalination of weakly mineralized waters using a reverse osmosis membrane were studied. The operational efficiency of membranes is limited mainly by membrane contamination. It was shown that the preliminary mechanical water purification helps to increase the productivity and selectivity of the membrane. One of the main causes of membrane contamination is the formation of carbonate deposits on their surface. One way to prevent membrane contamination is to dose antiscalants. It was established that the use of hydrolyzed polyacrylonitrile (HPAN) and hydrolyzed polyacrylamide (HPAA) as a stabilizer of scale formation is effective for concentrates of reverse osmosis desalination of water.
Źródło:
Journal of Ecological Engineering; 2022, 23, 1; 206-215
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of modified coal through chemical activation process on performance of heterogeneous reverse osmosis membranes
Autorzy:
Thaçi, B.
Gashi, S.
Daci, N.
Daci, M.
Dylhasi, A.
Powiązania:
https://bibliotekanauki.pl/articles/207269.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
chemical activation
coal
membranes
reverse osmosis
wastewater treatment
reverse osmosis treatment
aktywacja chemiczna
węgiel
membrany
odwrócona osmoza
oczyszczanie ścieków przemysłowych
Opis:
Heterogeneous reverse osmosis (RO) membranes have been prepared from cellulose acetate (CA) and modified coal through chemical activation. Nitric acid of various concentrations, sulfuric and acetic acids used for various time periods have been studied with respect to modification of structure of coal and consequently structure of RO membranes. The effect of these variables on the modification of coal was examined by IR spectroscopy. All membranes prepared in such a way showed improved performance in comparison with standard CA membranes. The volume flux of the best RO membranes at 94% level of solute separation was 3.87×10–2 m3/(m2·h) at 1.76 MPa using aqueous feed solution 400 mg/dm3 of sodium chloride. The performance improvement was related to increases of charge of groups of coal particles in the membrane, affecting their rheology and morphology resulting in better membrane productivity. The SEM of some membranes have also been presented. These membranes were tested also with 1:1, 1:2, 2:2 and 1:3 inorganic salt solutions. The agreement between the calculated and experimental data of solute separation for studied solutes was reasonably good.
Źródło:
Environment Protection Engineering; 2015, 41, 1; 53-65
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative Analysis of the Effectiveness of Reverse Osmosis and Ultraviolet Radiation of Water Treatment
Autorzy:
Dirisu, Gabriel B.
Okonkwo, Ugochukwu C.
Okokpujie, Imhade P.
Fayomi, Ojo S.I.
Powiązania:
https://bibliotekanauki.pl/articles/125109.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
water treatment
water treatment techniques
ultraviolet radiation
reverse osmosis
Opis:
Water contamination and pollution pose health hazards to humanity and hence the need for their treatment. This study compared reverse osmosis (RO) and ultra-violet (UV) radiation in treating borehole water (BHW) and surface water (SW). The study area is Omoku community in Rivers State of Nigeria. The RO- and UV-treated waters were determined by their physicochemical characteristics and total Coliform, with the control to check the impact of each one. The obtained results showed slight variations, which were either significant or not. The pH of the treated BHW was slightly acidic with the value of 6.52. Water conductivity ranged from 40.33 µs/cm3 to 42.40 µs/cm3 for the BHW treated with RO, UV and control samples, respectively. SW conductivity attained a range of 425.07–800.0 µs/cm3. Turbidity of BHW were beyond the detectable limit but was higher than the WHO limit of <5.00NTU, while total suspended solid (TSS) of SW ranged from 9.08–46.43 ppm. Total dissolved solids (TDS) values of water were between 3.50 ppm and 16.67 ppm for RO treated BHW and higher than that of SW. There was a reduction of salinity of BHW from 40.7 mg/l to 11.8 and 21.6 mg/l following RO and UV treatment, while SW salinity was also reduced from 75.0 mg/l to 20 mg/l in RO treated water and 16 mg/l in UV treated water. In this study, RO and UV water treatment proved to be effective in producing potable water from both BHW and SW, although RO seemed to produce water with reduced mineral content in comparison to the UV treatment. Both methods effectively reduced heavy metals as well as Coliform. The physicochemical parameters tested were below the WHO recommended limits in most cases. It is recommended that both methods be incorporated in a single WT in order to gain the benefits of both technologies.
Źródło:
Journal of Ecological Engineering; 2019, 20, 1; 61-75
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The performance assessment of reverse osmosis stations at Al-Mahalabea area
Autorzy:
Ahmed, Mohammed F.
Powiązania:
https://bibliotekanauki.pl/articles/118750.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
brackish water
desalination
membrane technology
reverse osmosis
SAW
TOPSIS
Opis:
The present study assesses RO stations at four sites in Al-Mahalabea area – Nineveh governorate, Iraq during the summer of 2013. The performance of RO stations are ranked by two methods: the Simple Additive Weight (SAW) and the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). Two groups of samples were collected from feed and permeate water for two periods (at zero time of operation and after ten weeks of operation) with eleven parameters for each sample were analysed. The highest overall rejection R efficiency appeared with the first set of parameters more than 90% (SO4, TDS, NO3, TH, and turbidity), while the second set was the least (Cl, Na, and total alkalinity – TA) ranged between 65 and 85%. It is observed that both the SAW and the TOPSIS methods are accurate to predict the performance efficiency.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2020, 29, 3; 332-342
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elimination of Bisphenol A from Wastewater through Membrane Filtration Processes
Autorzy:
Dudziak, M.
Kudlek, E.
Łaskawiec, E.
Felis, E.
Kowalska, K.
Garbaczewski, L.
Powiązania:
https://bibliotekanauki.pl/articles/123664.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
wastewater treatment
bisphenol A
ultrafiltration
reverse osmosis
complex purification process
Opis:
New priorities for the environment have resulted in a reassessment of modern technology for treatment of urban wastewater. Urban wastewater treatment mainly involves the elimination or reduction of anthropogenic organic micropollutants in the aquatic environment. In this paper, the effectiveness of bisphenol A elimination from wastewater, after biological treatment, through a complex ultrafiltration/reverse osmosis purification process was evaluated. The effectiveness of the wastewater treatment process in the tested system was also evaluated with a number of other physical and chemical analyses for pH, turbidity, colour, absorbance, TOC, phenol index, conductivity and the concentration of selected heavy metals. Within this study, the change in the hydraulic performance of the membranes was also investigated. The effectiveness of the reduction of bisphenol A concentrations during the process of ultrafiltration was small, due to the significant difference between the size of the pores of the membrane and the size of eliminated micropollutants. In the process of reverse osmosis, the wastewater treatment system reported that the concentration of bisphenol A was reduced by 68%. In the tested treatment system, the ultrafiltration/reverse osmosis completely removed colour, lead and chromium. Other contaminants were eliminated by more than 31%. In both membrane processes, there was evidence that the membrane pores were blocked, but this occurred to a greater extent during the process of reverse osmosis.
Źródło:
Journal of Ecological Engineering; 2018, 19, 1; 69-74
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Speciation of arsenic in groundwater and technologies for removal of arsenic in drinking water in the spiro tunnel bulkhead, Park City, Utah, USA
Autorzy:
Pawlak, Z.
Rabiega, G.
Scanlan, L.
Cartwright, P.
Powiązania:
https://bibliotekanauki.pl/articles/347045.pdf
Data publikacji:
2003
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
arsenic speciation
reverse osmosis treatment
coagulation filtration treatment
water treatment
Opis:
Application of an anion exchange resin column was performed to speciate of arsenic (III) and (V) in drinking water. This methodology was used to analyze water samples collectioned from the study of arsenic removal by two technologies, reverse osmosis membrane filtration and chemical coagulation/ filtration in pilot scale in anticipation of EPA=s new arsenic drinking water standard of 10 µg/L takes effect 2006. This EPA treatment technology project was to collect data on the performance of two existing water treatment processes to remove arsenic on pilot scale. Total arsenic concentrations were reduced by reverse osmosis from an average 60 µg/L in the source water to less than 1 µg/L, and chemical coagulation reduced total arsenic from an average 60 µg/L to 4 µg/L. The work reported here will focus on obtaining accurate readings for arsenic valence states (III) and (V), given the Edwards [17] method for arsenic speciation. Separation of arsenic As(III) and As(V) by speciation in field samples, was performed using an anion exchange resin column. The chloride interferences that affect the determination of 75Arsenic from chloride (35 isotope) molecular species (40Ar35Cl), were corrected using chloride measurements in all samples using equation: [75As(corr)] = [75As] - 3.127 × {[40Ar37Cl] - 0.815 [82Se]}. The use of sulfuric acid in the preservation procedure created interferences with ICP-MS in the range one ěg/L of arsenic. The problem of interference in determination of isotope 75As is due to sulfur 34S isotope which is present in sulfate. The (34S isotope, 4.21%) forms the polyatomic species (mass 75) (40Ar34S1H) and species (mass 74) (40Ar34S) which interferes with the determination of 75As isotope. The method detection limit, MDL, for arsenic for ICP-MS was determined to be 0.1 µg/L. Our spiked matrix recoveries, spiked blank samples, and reference materials deviate only a few percents from the listed true values.
Źródło:
Ars Separatoria Acta; 2003, 2; 71-83
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficiency of Reverse Osmosis and Ion Exchange in Water Purification from Nitrates
Autorzy:
Gomelya, Mykola
Shabliy, Tetyana
Makarenko, Iryna
Vakulenko, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2202127.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
nitrates
membrane
reverse osmosis
ion exchange
selectivity
productivity
permeate
concentrate
regeneration
Opis:
The process of extracting nitrates from water by the methods of reverse osmosis and ion exchange was investigated in the paper. In the formation of reverse osmosis, low-pressure membranes were used, and in ion-exchange processes, highly alkaline anionite AB–17–8 was applied in salt form. The dynamics of changes in the concentration of nitrates in the permeate and the concentration with an increase in the degree of permeate selection from 9 to 90% at initial nitrate concentrations of 18, 50 and 100 mg/dm3 were determined. The indicators of selectivity and productivity of membranes were calculated depending on the degree of permeate selection. It was shown that the low-pressure reverse osmosis membrane is characterized by low selectivity values at high productivity values in the selected part of the nitrate concentration. It was established that the ion exchange method is significantly more effective than reverse osmosis in removing nitrates from water. It ensures the reduction of nitrate content in purified water to a value of less than 1 mg/dm3 when the degree of their extraction is reached at the level of 99%. As the ionite is saturated with nitrates, the efficiency of their extraction decreases. Anionite sorbs nitrates effectively enough, being both in the chloride mixture and in the sulfate form. Nitrates are effectively desorbed by 2H solutions of sodium chloride and sodium or ammonium sulfate.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 172--180
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determining the Efficiency of Reverse Osmosis in the Purification of Water from Phosphates
Autorzy:
Gomelya, Mykola
Shabliy, Tetyana
Radovenchyk, Iaroslav
Vakulenko, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2202364.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
phosphates
water treatment
water purification
reverse osmosis
permeate
concentrate
selectivity
productivity
Opis:
Processes of water purification from phosphates using a low-pressure reverse osmosis membrane were studied. It was shown that the concentration of phosphates in the permeate largely depends on their initial concentration in the water and increases along with the degree of permeate selection. It was established that when using the Filmtec TW3–1812–50 membrane for phosphate concentrations up to 20 mg/dm3, their concentration in the permeate does not exceed 2.5 mg/dm3 with a degree of permeate selection up to 90% when cleaning solutions in distilled and artesian water. This value is below the permissible level for drinking water. When the concentration of phosphates increases to 100 and 1000 mg/dm3, their content in the permeate increases sharply to the values significantly higher than the permissible level in both drinking and wastewater. When sodium orthophosphate was added to artesian water, the effectiveness of its purification on this membrane with respect to chlorides, sulfates, hardness ions, and hydrocarbons was high. This indicates that the cartridges with these membranes can be used both in industrial installations and in households for further purification of artesian and tap water to drinking water quality.
Źródło:
Journal of Ecological Engineering; 2023, 24, 2; 238--246
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Feasibility of municipal solid waste (MSW) as energy sources for Saudi Arabia’s future Reverse osmosis (RO) desalination plants
Autorzy:
Agboola, P. O.
Saleh, J.
Powiązania:
https://bibliotekanauki.pl/articles/779384.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
municipal solid waste
reverse osmosis
energy content
waste to energy
water
Opis:
The Kingdom of Saudi Arabia (KSA) generates between 1.4–1.75 kg/person/day of Municipal Solid Waste (MSW) that accounts for over 16 million tons of MSW/year. The solid waste collected from different sources is dumped in landfills, thereby creating environmental concerns. In this paper, the potential of solid waste as an energy source (Waste to Energy (WTE)) for Reverse Osmosis (RO) water purification was evaluated. The KSA is known for its acute fresh water shortages and uses desalination technology in meeting its daily water requirements; a process that is energy intensive. The evaluation of the energy content of MSW shows a potential to produce about 927 MW in 2015, based on a total mass burn, and about 1,692 MW in 2032. The MSW-WTE plants can produce about 1.5% of the targeted 120 GW of energy for 2032. For the R.O system, it will give approximately 16.8% of the daily fresh water needed for total mass burn and 2.4% with the recycling option.
Źródło:
Polish Journal of Chemical Technology; 2016, 18, 4; 82-89
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remediation of laundry wastewater with a low-pressure aromatic polyamide thin-film composite reverse osmosis membrane for membrane fouling minimisation and reuse application
Autorzy:
Morris, Bradley Gareth
Aziz, Mujahid
Kasongo, Godwill
Powiązania:
https://bibliotekanauki.pl/articles/2086908.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
reverse osmosis
RO
wastewater effluent
surfactant
odwrócona osmoza
ścieki pralnicze
surfaktant
Opis:
In areas with limited freshwater resources, affordable technologies can remediate greywater for reuse applications and increase the water supply. These wastewaters contain various chemicals, which make them challenging to treat. Reverse osmosis (RO) membrane systems could be the solution to removing these harmful chemicals. Membrane fouling has been investigated and using a commercial antiscalant to treat laundry wastewater effluent with a polyamide (PA) thin-film composite (TFC) reverse osmosis membrane. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR),energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM) were used to assess the antiscalant effects. The anionic surfactant rejection was above 99.8% for experimental tests conducted. The average COD removal rate was in the range of 91-96%, irrespective of the antiscalant dosing. However, the presence of antiscalant at the dose of 8 mg/dm3 significantly reduced fouling intensity. The flux decline ratio amounted to 56 and 72% for the RO process with antiscalant and no antiscalant dosing, respectively.
Źródło:
Environment Protection Engineering; 2022, 48, 2; 43--57
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Leachate Quality on Reverse Osmosis Performance
Wpływ jakości odcieków na parametry pracy odwróconej osmozy
Autorzy:
Tałałaj, I. A.
Biedka, P.
Bartkowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/1813657.pdf
Data publikacji:
2018
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
leachate treatment
municipal landfill
reverse osmosis
oczyszczanie odcieków
składowisko odpadów
odwrócona osmoza
Opis:
In paper an influence of leachate from landfills with different exploitation time on reverse osmosis performance during their treatment was presented. An unstabilized leachate from landfill of two years exploitation and stabilized leachate from landfill with operation time over 10 years were taken to analysis. The analyses were conducted with use of RO system constructed to reflect the actual operating conditions of the reverse osmosis system exploited on municipal landfills. These two kind of leachate was directed to the reverse osmosis system by maintaining during their filtration the same operating parameters (temperature, pressure, flow rate, recovery rate and pH of leachate). The obtained results indicated that filtration of stabilized leachate is characterized by better performance of the RO system, i.e. shorter filtration time, higher permeate flow and higher salt retention. The higher concentration of organic matter in unstabilized leachate contributes to membrane pores blocking decreases the efficiency of the osmotic system. Moreover, high organic content in the leachate from young landfills, with a high concentration of cations, leads to an unfavorable phenomenon of neutralization of the membrane surface.
W pracy przedstawiono wpływ odcieków ze składowisk o różnym czasie eksploatacji na parametry pracy odwróconej osmozy podczas ich oczyszczania. Do badań przyjęto nieustabilizowane odcieki ze składowiska o 2-letnim czasie eksploatacji oraz odcieki ustabilizowane ze składowiska o czasie eksploatacji przekraczającym 10 lat. Analizy prowadzono na układzie odwróconej osmozy, skonstruowanym w ten sposób by odzwierciedlać rzeczywiste warunki pracy układów eksploatowanych na składowiskach odpadów. Odcieki skierowano na układ RO zachowując podczas ich filtracji te same parametry pracy (temperatura, ciśnienie, przepływ, stopień odzysku oraz odczyn odcieków). Uzyskane wyniki wskazały, że proces filtracji odcieków ustabilizowanych charakteryzuje się lepszymi parametrami pracy układu RO, tj. krótszy czas filtracji, wyższy przepływ permeatu oraz wyższy stopień retencji soli. Większa zawartość substancji organicznych zawartych w odciekach młodych (nieustabilizowanych) przyczynia się do blokowania porów membrany i obniża wydajność układu osmotycznego. Ponadto wyższa zawartość substancji organicznej w odciekach z młodych składowiska oraz wyższe stężenie w nich kationów prowadzi do niekorzystnego zjawiska neutralizacji powierzchni membrany.
Źródło:
Rocznik Ochrona Środowiska; 2018, Tom 20, cz. 1; 634-646
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie odwróconej osmozy w procesie oczyszczania odcieków
Treatment of landfill leachate with reverse osmosis
Autorzy:
Tałałaj, I.
Powiązania:
https://bibliotekanauki.pl/articles/908533.pdf
Data publikacji:
2013
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
jakość odcieków
odwrócona osmoza
oczyszczanie odcieków
leachate quality
reverse osmosis
leachate treatment
Opis:
Składowanie odpadów jest wciąż najbardziej powszechną metodą ich unieszkodliwiania. Szacuje się, że na świecie postępuje się tak z 95% wytworzonych odpadów. Podczas składowania w bryle odpadów zachodzi szereg procesów fizyczno- chemicznych oraz biologicznych. Rozkład materii organicznej w połączeniu z infiltracją wód opadowych prowadzi do wymywania z niej silnie zanieczyszczonych wód, zwanych odciekami.2 Skład odcieków i stężenie w nich zanieczyszczeń zależy głównie od rodzaju składowanych odpadów, sposobu eksploatacji składowiska oraz czasu składowania.
One of landfill’s product is leachate, which is highly and complexly polluted wastewater. Landfill leachate, especially old one is very difficult to treat using conventional biological processes. One of the methods to be used in the treatment of such leachate is reverse osmosis. This paper compares the effectiveness of reverse osmosis in removing BOD5, COD, NH3-N and selected heavy metals. Efficiency of leachate treatment by one-and two-stage reverse osmosis system was characterized. The effects of the membrane type on the purification are also described. The influence of the waste quality on leachate treatment efficiency and the risks associated with the use of reverse osmosis in the leachate treatment were also described.
Źródło:
Ekonomia i Środowisko; 2013, 2; 95-106
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis and Simulation Performance of a Reverse Osmosis Plant in the Al-Maqal Port
Autorzy:
Yousif, Yasameen T.
Abbas, Abdulhussain A.
Yaseen, Dina Ali
Powiązania:
https://bibliotekanauki.pl/articles/2086424.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
reverse osmosis
Iraq
Basrah
Shatt Al-Arab
TDS
total dissolved solids
Winflows
Opis:
The Basrah province (southern of Iraq) was interested in establishing desalination plants to provide drinking water due to the high levels of salinity in its water resources. This work was carried out in order to evaluate and simulate the functionality of the reverse osmosis plant in the Al-Maqal port. From the field and laboratory measurement, this study concluded that the considered parameters of product water by reverse osmosis (RO) plant were within the Iraqi standard (IRS) limits. The calculation of operation indices showed that the recovery rate of plant (72%) and the permeate flux of plant (20 lmh) was within for limitation of brackish surface water. In turn, the plant has a low salt rejection (90.1%) and a high pressure drop (5 bar); therefore, the membranes require backwashing or chemical cleaning. Then, the performance of RO membrane was simulated by the Winflows software. The best operating parameters were identified. The coefficient of determination (R2) between simulated and measured TDS was 0.83. Therefore, the simulated TDS of permeate multiplied by 5.3 was given a good estimation for actual TDS within acceptable an error rate of 17%.
Źródło:
Journal of Ecological Engineering; 2022, 23, 5; 173--186
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 41

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies