scholarly journals Properties of ashes formed after the combustion of sewage sludge

2018 ◽  
Vol 44 ◽  
pp. 00012
Author(s):  
Elżbieta Bezak-Mazur ◽  
Małgorzata Widłak ◽  
Jarosław Gawdzik ◽  
Renata Stoińska ◽  
Justyna Zapała-Sławeta ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Phosphorus Content ◽  
Treatment Plant ◽  
Crystallographic Structure ◽  
Treatment Facility ◽  
Sludge Treatment ◽  
Sulphate Content ◽  
X Ray ◽  
Sewage Sludge Treatment

The objective of the research presented in the paper was to analyze the ash formed in the process of incineration in the thermal sewage sludge treatment facility being a part of Sitkówka-Nowiny wastewater treatment plant, located in the vicinity of Kielce. The research involved the investigation of heavy metal and total phosphorus content, leachability of certain ions and X-ray phase analysis. The comparison of the obtained results with those available in literature revealed similarities in the crystallographic structure of ashes from different treatment plants. Then, the differences observed in the content of heavy metals in particular ashes are related to the composition of sewage flowing into treatment plants. Attention was also paid to a significant sulphate content revealed in the leachability analysis, found both in the ash from Sitkówka-Nowiny treatment plant and in the ash analyses results available in the literature sources. High sulphate concentration can limit the use of ash for construction purposes.

scholarly journals Fractions composition study of the pyrolysis oil obtained from sewage sludge treatment plant

2012 ◽  
Vol 103 (1) ◽  
pp. 459-465 ◽  
Author(s):  
R.V.S. Silva ◽  
G.A. Romeiro ◽  
M.C.C. Veloso ◽  
M.K.-K. Figueiredo ◽  
P.A. Pinto ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Treatment Plant ◽  
Pyrolysis Oil ◽  
Sludge Treatment ◽  
Sewage Sludge Treatment ◽  
Composition Study

scholarly journals Sewage sludge treatment for fertilizer production using biotechnologies: perspectives for the Bezludivka wastewater treatment plant, Kharkiv

2019 ◽  
pp. 425-431
Author(s):  
Lidija Svirenko ◽  
Natasha Suchkova
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Sludge Treatment ◽  
Plant Environment ◽  
Enteric Parasites ◽  
Cr Concentration

Complex "Dikanivka" & "Bezludivka" wastewater treatment plant (WWTP, Kharkiv) is oneof the biggest in Ukraine. Mixture of industrial and domestic wastewater is treated on thestation. Great volume of sewage sludge has been produced and accumulated for forty years ofthe plant operation, Environment of the region has been affected rather seriously in result ofout-of-date sludge dewatering system exploitation and heaps of dewatered sludge on theterritory of the plant Environment stabilization in the area of sludge treatment is an urgentproblem of the region, Phytoremediation as a promising natural technology for the purpose isdiscussed in the article.Sewage sludge is rich in organic matter and nutrient elements (nitrogen and phosphates)therefore it could be applied for soil fertilization. On the other hand, due to high heavy metals(Cd, Ni, Cu, Cr) concentration in sludge, contamination with enteric parasites, pH less than5,5 there is restriction for sludge application in agricultural production,Willow (Salix spp,) is discussed as a plant for phytoremediation of the territory and forsubstratum properties melioration because of its availability to accumulate heavy metals,regulate concentration of nutrients, high biomass production and high environmentaltolerance.Experiment in situ has to be carried for the plant-remediater selection and for investigation ofsludge agricultural properties dynamic.

scholarly journals CHANGES IN THE CONCENTRATION OF HEAVY METALS (CR, CD, NI) DURING THE VERMICOMPOSTING PROCESS OF SEWAGE SLUDGE / SUNKIŲJŲ METALŲ (CR, CD, NI) KONCENTRACIJŲ KAITA NUOTEKŲ DUMBLO VERMIKOMPOSTAVIMO PROCESO METU

2014 ◽  
Vol 6 (4) ◽  
pp. 362-367
Author(s):  
Aušra Zigmontienė ◽  
Indrė Liberytė
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Eisenia Fetida ◽  
Management Strategy ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Optimal Conditions ◽  
Sewage Sludge Treatment

Sewage sludge treatment and utilization is an important issue for a biodegradable waste management strategy. Heavy metals in sewage sludge complicate its use. Vermicomposting is one of the ways to improve the characteristics of sewage sludge and to reduce the residual concentrations of heavy metals. Study on changes in the concentration of heavy metals (Chromium, Nickel and Cadmium), when vermicomposting sewage sludge, was performed using Californian earthworms (Eisenia fetida). For that purpose, 60 kg of sewage sludge from Vilnius Waste Water Treatment Plant were taken thus inserting 1.5 kg of Californian earthworms into it. Optimal conditions for work (optimum temperature, moisture, pH) for earthworms to survive were maintained in the course of the study that lasted 120 days and was conducted in June – August. The samples of sewage sludge and earthworms were taken every 10 days. The concentrations of heavy metals in sewage sludge were measured using atomic absorption spectroscopy. Nuotekų dumblo tvarkymo ir naudojimo problema – svarbi biologiškai skaidžių atliekų tvarkymo strategijos dalis. Lietuvoje kasmet susidaro apie 80 tūkst. tonų nuotekų dumblo, o didžiausia dalis šio kiekio vis dar sandėliuojama valyklų aikštelėse. Nuotekų dumblas gali būti efektyviai naudojamas žemės ūkyje, tačiau sunkieji metalai, esantys nuotekų dumble, apsunkina jo naudojimą. Vienas iš būdų pagerinti dumblo savybes ir kartu sumažinti liekamąsias metalų koncentracijas – nuotekų dumblo vermikompostavimas. Sunkiųjų metalų (chromo, nikelio ir kadmio) koncentracijų kaitos vermikompostuojant nuotekų dumblą tyrimas atliktas naudojant Kalifornijos sliekus (Eisenia fetida). Tirta sunkiųjų metalų koncentracijos kaita viso kompostavimo proceso metu. Tyrimui naudotas nuotekų dumblas (60 kg) buvo paimtas iš Vilniaus miesto nuotekų valyklos ir į jį įleista 1,5 kg Kalifornijos sliekų. Viso tyrimo metu buvo palaikomos optimalios sąlygos sliekams gyvuoti ir veikti (optimali temperatūra, drėgmė, pH). Tyrimo trukmė – 120 parų (birželio–rugpjūčio mėnesiai), dumblo mėginiai imti 10 parų intervalu. Išmatuotos ir nustatytos sunkiųjų metalų – chromo, nikelio ir kadmio – koncentracijos nuotekų dumble.

Sign in / Sign up

Export Citation Format

Share Document