Temat: sludge - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Recent Developments in the Application of Ultrasonication in Pre-Treatment of Municipal Sewage Sludge
Autorzy:: Szaja, Aleksandra
Szulżyk-Cieplak, Joanna
Łagód, Sylwia
Kuzioła, Elżbieta
Tematy:: sewage sludge
wastewater treatment plant
ultrasonication
sewage sludge pretreatment
sludge dewatering
sludge settleability
sludge biodegradability; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59113690.pdf Link otwiera się w nowym oknie
Opis:: This article presents the experience in the field of using ultrasonication as a pre-treatment method of SS (sewage sludge). On the basis of a review of the literature, the effect of pretreatment of sewage sludge by US (power ultrasound) with different parameters on SS quality parameters and energy effects of the process was presented. The status of commercial applications of US as a sewage sludge pretreatment method was also presented, using the example of wastewater treatment plants in Poland. It was shown that the effective management of SS is an important technological and environmental problem in many wastewater treatment plants. Therefore, new strategies for dealing with this by-product are constantly being sought. In large wastewater treatment plants, the dominant method of stabilizing SS is AD (anaerobic digestion). However, due to the characteristics of SS, it shows low efficiency. Among the numerous strategies, US is one of the new technologies that is finding several full-scale implementations. Its application allows for solubilization of organic matter, disruption of microbial cells, as well as SS floc description and enzyme release. A number of benefits can be obtained as a result of these developments, including increased methane production, improved reaction kinetics and removal of organic matter, as well as enhanced settability and dewatering of SS, thus contributing to savings in wastewater treatment plants.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Sludge as an agent improving soil properties
Autorzy:: Bartkowska, I
Tematy:: sludge
digestion of sludge
sanitation of sludge
natural utilization of sludge
agent improving properties of sludge; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/125365.pdf Link otwiera się w nowym oknie
Opis:: Sewage-treatment plants generate sludge which needs to be neutralized for legal, esthetical, and practical reasons. Economical and ecological concerns indicate that sludge, as long as it is possible, should be returned to the natural environment. The article presents the process of autothermal thermophilic aerobic digestion (ATAD) as a measure to produce biomass, which can be naturally utilized. The description of theoretical principles of the process in question is accompanied by presentation of an ATAD installation which has been functioning since 2009 at the municipal sewagetreatment plant in Olecko. Results of microbiological and chemical tests carried out in the years 2010–2012 have been analyzed. Examinations embraced sludge which was the final product of the aforementioned sewage-treatment plant.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Determination of metal content in sewage sludge and sewage sludge ash to find opportunities to use them in the construction industry
Autorzy:: Świerczek, Lesław
Cieślik, Bartłomiej
Tematy:: heavy metals
sewage sludge
sewage sludge ash
sewage sludge management; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1163144.pdf Link otwiera się w nowym oknie
Opis:: Sewage sludge management is becoming an increasing problem in developed and developing countries. Due to their physicochemical properties (mainly high content of heavy metals) a safe method of utilization is sought. Considering environmental protection, energy recycling, reduction in use of the raw materials and the possibility of immobilization hazardous substances, the use of ashes in building materials becomes a very good way of utilization. Both unprocessed sewage sludge and ashes after their thermal utilization can be used in the construction industry. Before using sediments and ashes, it is necessary to analyze the content of heavy metals, because they can have a negative effect, for example, on cement-stabilized products. The purpose of this work was to determine selected metals (Cd, Cu, Ni, Pb, Zn, Cr, Mg, Mn, Fe) in the primary, dehydrated, digested, excess sludge and ash after his incineration to check and compare heavy metal content. The obtained data can be used to optimize the production process of cement products that contain sewage sludge at differ form, and confirm the environmental safety of proposed approaches.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Techniczne i ekonomiczne rozwiązania gospodarki osadami w oczyszczalniach komunalnych
Technical and economical solution in sewage sludge management of the municipal wastewater treatment plants
Autorzy:: Pasterak, N.
Mrowiec, B. M.
Tematy:: osady ściekowe
przeróbka osadów
gospodarka osadami
ilość osadów
jakość osadów
sewage sludge
sludge disposal
sludge management
quantity sludge
quality sludge; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/400328.pdf Link otwiera się w nowym oknie
Opis:: W pracy zaprezentowano porównanie prowadzonej gospodarki osadami ściekowymi w 6 oczyszczalniach ścieków komunalnych o RLM od 50 000 do 400 000. Dla prowadzonej oceny istotnymi zagadnieniami były ilość i jakość oczyszczanych ścieków, funkcjonujący ciąg technologiczny przeróbki osadów, ilość i jakość produkowanych osadów oraz ich ostateczne zagospodarowanie. Znaczącym elementem oceny było również działanie w zakresie wprowadzania nowoczesnych technologii w aspekcie ograniczenia składowania osadów.
The paper presents a comparison of realized wastewater sludge disposal processes in six municipal wastewater treatment plants with a pe of 50 000 to 400 000. For that evaluation, quantity and quality of raw wastewater, functioning line of sludge disposal, the quantity and quality of the produced sludge and their utilization were the important issues. A significant element of the assessment was also action in introducing modern technologies in the aspect of reducing the sludge storage.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Drop in Conductivity of Sewage Sludge in the Process of Autothermal Thermophilic Aerobic Digestion
Autorzy:: Bartkowska, I.
Tematy:: autothermal stabilization of sewage sludge
conductivity of sewage sludge
neutralization of sewage sludge
sanitation of sewage sludge
sewage sludge processing; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/123193.pdf Link otwiera się w nowym oknie
Opis:: The article presents research on the assessment of electrolytic conductivity changes of sludge during the process of its autothermal thermophilic aerobic digestion (ATAD), which takes place in a two-stage installation system, operating in a municipal sewage-treatment plant. In the years 2012–2014 sludge was studied and the results were analyzed. Thickened sludge in the intermediate tank, which was then directed to installation reactors, was examined. Conductivity was measured in each tank. In this manner collected results made it possible to follow the changes of this index at consecutive stages of the system. The results were statistically analyzed and it was determined to what degree, as a result of an objective process, the values of processed sludge conductivity would change. The conclusions from the carried-out studies and from own experiments are also presented.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Analysis of the Physical and Chemical Composition of Sludge from the Water Treatment Plant
Autorzy:: Ciuła, Józef
Wiewiórska, Iwona
Kulczycka, Joanna
Willson, Julia
Tematy:: coagulation sludge
water treatment sludge
metals in sludge
X-ray crystallography; Pokaż więcej
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Powiązania:: https://bibliotekanauki.pl/articles/58907740.pdf Link otwiera się w nowym oknie
Opis:: The properties and composition of the sludge generated in water treatment systems depend primarily on the type and composition of the water to be treated, the treatment methods, and the type and doses of chemical reactants. The sludge produced in the water treatment plant (WTP) under study follows the technological processes of coagulation, flocculation, sedimentation, and filtration. The analyses aimed to characterize the sludge in terms of its physico-chemical properties and classify it in terms of its potential discharge into the river and management. Four series of sediment tests were conducted over a calendar year (March, June, September and December), analysing selected parameters using various test methods, including the X-ray crystallography (XRF) method. The publication's authors showed that the sediment consists mainly of sand, clay, and silt particles with grain sizes ranging from 0.001 mm to 1 mm. Silica (53.78%), alumina (23.58%), calcium oxide (8.28%), iron (III) oxide (5.61%), and potassium oxide (2.36%) represent the main chemical constituents present in the sediment. The authors characterized the sediment in terms of the content of biogenic compounds: various forms of phosphorus and nitrogen, organic compounds – determined as total organic carbon (TOC), selected metals, and the content of individual elements (carbon, hydrogen, oxygen, nitrogen, sulfur). In addition, the sludge samples were also characterized in terms of calorific value, ash content, water content, and heat of combustion. Discharging WTP sludge into rivers, ponds, and lakes or storing dewatered sludge is an environmentally unfriendly form of disposal for this type of waste. The authors see the possibility of conducting further research on using WTP sludge in wastewater treatment, removing heavy metals from aqueous solutions, producing cement and construction materials, and recovering or recycling.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Zagospodarowanie komunalnych osadów ściekowych metodami termicznymi w obliczu zakazu składowania po 1 stycznia 2016
Utilisation of municipal sewage sludge by thermal methods in the face of storage disallowing
Autorzy:: Bień, J. D.
Bień, B.
Tematy:: osady ściekowe
suszenie
spalanie
instalacje termicznego przekształcania
sewage sludge
sludge drying
sludge incineration
thermal methods of sludge utilization; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/399498.pdf Link otwiera się w nowym oknie
Opis:: Z dniem 1 stycznia 2016 r. zacznie obowiązywać zakaz składowania komunalnych osadów ściekowych na składowiskach odpadów. Modernizacja i budowa nowych oczyszczalni ścieków spowodowała wzrost ilości wytwarzanych komunalnych osadów ściekowych w ostatnich kilkunastu latach. Ich ilość kształtuje się obecnie na poziomie powyżej 500 tys. Mg s.m i zakładany jest dalszy ich wzrost, choć z pewnością nie tak znaczący jak przewidywano jeszcze parę lat temu. Realizując strategię określoną w Krajowym Planie Gospodarki Odpadami (KPGO) polegającą na całkowitym zaniechaniu składowania osadów ściekowych a zdecydowanym zwiększeniu ilości komunalnych osadów ściekowych przetwarzanych przed wprowadzeniem do środowiska oraz osadów przekształcanych metodami termicznymi wielu eksploatatorów oczyszczalni wybrało ten ostatni kierunek. W artykule przedstawiono aktualny stan w zakresie termicznego przekształcania komunalnych osadów ściekowych w Polsce.
According to the data announced by the Central Statistical Office (GUS) in 2014 in Poland, there are more than three thousands municipal wastewater treatment plants. Most of them are relatively new. Modern and highly efficient wastewater treatment systems produce significant amounts of municipal sewage sludge. The amount of sludge starts to create huge problems in their proper management. In addition, from 1st of January 2016 storage of sewage sludge, which so far has been one of the popular methods of sludge management will be impossible. Thermal methods of disposal are currently considered as an interesting option in sludge management. Currently, in Poland there are several plants where sewage sludge is incinerated or dried. The paper presents the status of thermal method of municipal sewage sludge utilization before the date of storage disallowing.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Assessment of the Influence of Evaporation and Evapotranspiration on the Volume of Sludge Accumulation in the Sludge Drying Beds
Autorzy:: Velychko, Svitlana
Dupliak, Olena
Tematy:: sludge drying beds
evaporation
evapotranspiration
sludge
sewage; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/1839097.pdf Link otwiera się w nowym oknie
Opis:: At present, the sludge drying beds of the Kyiv wastewater treatment plants are operated as a sludge accumulator in an emergency mode, practically without free volume. The purpose of the work was to determine the equation for the evaporation losses calculation from sludge drying beds and the required free volume for sludge accumulation for the next 7 years. The required free volume was calculated using the water budget method which takes into account evaporation from the water surface and evapotranspiration during the vegetation. The total losses from sludge drying beds is 1076 mm/year in normal year and is 920 mm/year in a cold year. The required free volume was calculated considering the trend of increasing average temperature over the last decade and considering the significant environmental risk. A correction was made for one unfavourable year with cold summer and warm winter and an additional rain rate of 1% probability. The additional free volume required is 3.24 million m3 for 7 years if all three sludge drying beds are operated.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Analysis of the Variability of the Composition of Sewage Sludge Before and After Drying Treatment – SEM Studies
Autorzy:: Kiper, Justyna
Głowacka, Anna
Rucińska, Teresa
Tematy:: sewage sludge
sewage sludge management
SEM observation; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/124107.pdf Link otwiera się w nowym oknie
Opis:: The aim of the study was to determine the physical and chemical properties of the sewage sludge from “Pomorzany” and “Zdroje” municipal wastewater treatment plants located in Szczecin, Poland. The paper presents the outcomes of SEM observation of dried and stabilized sewage sludge. The research on the obtained materials was conducted using reference methods; the images from a scanning electron microscope were used. The amount of sewage sludge produced with the methods of its management was presented. The technology of sludge management is based on its dehydration up to dry weight content of roughly 20% and then drying in contact dryers up to 90–92% dry weight, separately in both plants. Dried sewage sludge is subsequently burned in mechanical grid boilers at “Pomorzany” WWTP. The analyzed materials were characterized by the pH of 7.90–8.42, dry mass and average organic matter content were 18.949% and 68.903%, respectively. The elements identified in the largest amount on the surface of analyzed materials included calcium, iron, phosphorus, sulphur and silicon. The amount of phosphorus ranging from 1.82 to 3.44% indicates the possibility of using sewage sludge as organic fertilizer product or an alternative source of phosphorus.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The effect of the excess sludge pretreatment on biogas productivity
Autorzy:: Bernat, Katarzyna
Zielińska, Magdalena
Kulikowska, Dorota
Cydzik-Kwiatkowska, Agnieszka
Wojnowska-Baryła, Irena
Waszczyłko-Miłkowska, Beata
Piotrowicz, Beata
Tematy:: biogas production
sludge pretreatment
activated sludge
aerobic granular sludge
ultrasound disintegration
homogenization; Pokaż więcej
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie
Powiązania:: https://bibliotekanauki.pl/articles/298334.pdf Link otwiera się w nowym oknie
Opis:: To intensify biogas production during anaerobic stabilization of organic matter in sludge, pretreatment is applied. The effect of pretreatment of excess activated sludge (AS) and excess aerobic granular sludge (GS) on biogas productivity (BP) and composition was investigated. The sludge was pretreated with homogenization (6,500 rpm for 0.5 min (H0.5) and 1 min (H1.0)) or ultrasound disintegration at 20 kHz (50% amplitude for 2 min (D50%_2.0) and 4 min (D50%_4.0), and 100% amplitude for 4 min (D100%_4.0)). BP of AS of GS without pretreatment was 603.3±5 dm3/kg TS (793.4±7 dm3/kg VS); that was 200.6±4 dm3/kg TS (480.8±6 dm3/kg VS). With disintegration, the BP of AS increased by 7.8% (650.4±10 dm3/kg TS) (D50%_2.0) and 16.1% (700.6±11 dm3/kg TS) (D100%_4.0), and that of GS increased by 7.0% (214.0±5 dm3/kg TS) (D50%_2.0) and 16.0% (232.8±5 dm3/kg TS) (D100%_4.0). With homogenization, BP increased by 2.0-3.0% (AS) and 1.6-3.2% (GS).
Dostawca treści:: Biblioteka Nauki

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