Effects of municipal wastewater treatment sludges on some soil properties in field experiment

Akça, Muhittin Onur
Farasat, Shima
Namlı, Ayten
Sanin, Faika Dilek
Introduction: The agricultural use has become the principal disposal method for sewage sludge in Europe, agricultural use accounts for 37% of the total sludge produced and it is expected that stabilized sludge will be used in agriculture in large quantities in the next years in many important EU member states. The reuse of treated municipal sewage sludge (biosolids) in agriculture provides the nutrients and micronutrients (such as N, P, K but also Fe, B, Cu and Ni among others) necessary for plant and crop growth. The use of sludge in agriculture also enhances the organic content of soils, increases the water- holding capacity, the soil aggregation, reduces the soil bulk density, increases the cation exchange capacity, enhances the plant root environment. Therefore, plants are better able to withstand drought conditions, extract water, and utilize nutrients. Material and Methods: This study examines the effect of sewage sludge application on some soil properties. A year-long field experiment was set up in the district of Haymana. Dewatered anaerobically digested sewage sludge were collected from Ankara municipal treatment plants. The sludge doses are adjusted according to the nitrogen requirement of the wheat plant. Within this scope, sewage sludge were individually used in doses of approximately 500, 1000, 2000, and 4000 kg/da with and without chemical fertilizer. Bread wheat (Tosunbey variety) followed its normal pattern and plants were harvested. In the all of experiments, some of properties of soil such as pH, EC, organic matters, total nitrogen, ammonium and nitrat nitrogen, available P2O5, exchangeable K2O, CEC, and CaCO3 were determined. Results: As a result of the field study, increases in total nitrogen, available P2O5, exchangeable K2O, organic matter, CEC and EC values were determined depending on the increasing sludge dose in soil samples. A significant change in the pH values of the soils has not been determined. In all treatments, it was determined that the sludge application affects some chemical properties of soil (OM, CEC, N, P) positively. The lime and pH were unaffected and the salt content of the soil increased. Discussion: Soil salinity is an important problem of Turkey, unconscious use of sewage sludge can affect the salting of the soil. Therefore, this issue should not be taken into consideration when using sewage sludge. The use of the combinations of biosolid and chemical fertilizers may be more effective than alone application of biosolid.
Ecology 2018, (19 - 23 Haziran 2018)


Influence of biomass thermal pre-treatment on the particulate matter formation during pulverized co-combustion with lignite coal
Kazanç Özerinç, Feyza (2021-03-05)
This work investigated the particulate matter formation during co-combustion of biomass with coal.Olive residue in 212-300 μm was chosen as agricultural waste biomass, and Tunçbilek lignite in 106-125μm as the coal. The biomass was thermally pretreated to assess the influence of the pretreatmenttemperature on particulate matter formation during co-combustion. Specifically, the olive residued wastorrefied (at 275 ºC) and pyrolyzed (at 500 ºC) using a tubular oven. The biomass-coal blends in a 50:50wt.% ratio...
Effects of anaerobic digestion on the combustion of sewage sludge
Çelebi, Emrehan Berkay; Aksoy, Ayşegül; Sanin, Faika Dilek (2016-06-10)
Around the world, especially in the developing countries, sludge management is a topic gaining increasing importance, as the number of treatment plants and the people connected to these plants are on the rise. Old approaches seeing sludge as a waste, including landfilling, leave its place for new applications where sludge acts as an energy source or a resource as fertilizer. Combustion or co-combustion of sludge exploits its energy potential while providing stabilization ...
Effects of separate and intergrinding on some properties of portland composite cements
Soyluoğlu, Serdar; Tokyay, Mustafa; Department of Cement Engineering (2009)
In the production of cement, to increase the cement/clinker ratio and decrease CO2 emission, the most important alternative is to produce mineral admixture incorporated cements (CEM II-III-IV-V) instead of portland cement (CEM I). These cements are usually produced by intergrinding the portland cement clinker and the mineral admixtures. However, the difference between grindabilities of the different components of such cements may cause significant effects on the particle size distribution and many other pro...
Effect of particle size on resistance to chloride for hydrodechlorination of trichloroethylene in water
Karahan, Selin; Çelik, Gökhan; Department of Chemical Engineering (2022-8)
Contamination of groundwater by chlorinated compounds is an important environmental hazard to humanity because worldwide drinking water demand is generally supplied by groundwater. Chlorinated pollutants, especially trichlorethylene (TCE), are released to the environment due to its frequent use in industrial applications. This highly toxic chemical poses a serious threat to human health and the environment. In this regard, cleaning of groundwater from TCE is of great importance. Catalytic hydrodechlorinatio...
Effect of ozone pretreatment on biogas production and microbial community structure of two-stage anaerobic digesters
Akçakaya, Merve; İçgen, Bülent; Department of Environmental Engineering (2021-2-09)
The amount of sludge produced in treatment plants is increasing depending on the population growth and water consumption. Anaerobic digestion (AD) is a widely used sludge stabilization method in wastewater treatment plants, as it provides volume reduction and methane-rich biogas production. In single-stage anaerobic digestions, the process fails due to volatile fatty acid accumulation and pH changes. To solve this problem, two-stage anaerobic digestion (TSAD) process has emerged t...
Citation Formats
M. O. Akça, S. Farasat, A. Namlı, and F. D. Sanin, “Effects of municipal wastewater treatment sludges on some soil properties in field experiment,” Kastamonu, Türkiye, 2018, p. 712, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/84236.