An investigation of agricultural use potential of dewatered sewage sludge
Journal Title: Environmental Health Engineering and Management Journal - Year 2019, Vol 6, Issue 3
Abstract
Background: One of the useful applications of Dewatered sludge (DWS) of municipal wastewater treatment plants (WWTPs) is its use as manure in agriculture; therefore, its quality characteristics should be specified. The aim of this research was to determine biological and physicochemical characteristics of DWS of Sari WWTP and compare them with standards, and also to investigate its potential use in agriculture. Methods: Sludge samples were taken from the sewage sludge of Sari WWTP. Sampling and analysis of samples parameters including fecal coliform, salmonella, helminth ova, carbon, nitrogen, C/N, phosphorus, organic matter, potassium, moisture, electrical conductivity, and PH, were performed during four seasons with three replications based on the standard method. Results: The fecal coliform, salmonella, and helminth ova of the DWS were 2.37×106 ± 1.06×106 MPN/1 g d.s weight, 47±12.92 MPN/4 g d.s weight, and 466±61.85 number/4 g d.s weight, respectively, therefore, the DWS of Sari WWTP was categorized in the class B of the EPA standard. The amounts of C/N, organic matter, carbon, nitrogen, phosphorus, potassium, moisture, electrical conductivity, and PH were obtained to be 12.7±1.15, 42.4±3.27%, 24.6±1.89%, 1.94±0.13%, 2.35±0.6%, 0.57±0.13%, 82±3.12%, 1.34±0.21 ds/m, and 7.41± 0.45, respectively. Conclusion: The DWS of Sari WWTP has a good fertility value but it cannot be safely used in agriculture and should be improved for class A by the Processes to Further Reduce Pathogens (PFRP), especially by composting.
Authors and Affiliations
Seyed Mostafa Aghili , Nasser Mehrdadi , Behnoush Aminzadeh , Mohammad Ali Zazouli
Keywords
Related Articles
- EP ID EP675760
- DOI DOI: 10.15171/EHEM.2019.20
- Views 283
- Downloads 0
The food safety management in beach tourism: A qualitative study using focus group discussion in Yogyakarta, Indonesia
Background: Foodborne diseases are still a concern of public health sectors in Indonesia. The tourism area is an important place where the transmission of diseases could occur if there is no implementation of food safe...
Occurrence and characteristics of microplastics in surface water and sediment of Zayandeh-rud river, Iran
Background: Zayandeh-rud river is the most important river in the central regions of Iran and the present study aimed to provide new insights into microplastics (MPs) pollution in surface water and sediments of this ri...
Evaluation of the efficiency of the TiO2/UV nano-photocatalytic process in the removal of humic and fulvic acids from aqueous solutions
Background: Removing natural organic substances from drinking water sources is necessary to prevent the formation of toxic and carcinogenic disinfection by-products (DBPs). The nano-photocatalytic oxidation process to...
Health risks of welding fumes: A review to investigate the relationship between oxidative stress levels and trace metals in body fluids of welders
Background: Welding fumes (WFs) contain heavy metals that can induce oxidative stress and health issues in welders. This review investigated the relationship between oxidative stress biomarkers and trace metals in weld...
Comparing the ZnO/Fe(VI), UV/ZnO and UV/Fe(VI) processes for removal of Reactive Blue 203 from aqueous solution
Background: Wastewater contaminated with dyes such as Reactive Blue 203 can produce a lot of health problems if it is released into the environment without a suitable treatment. Although there are several studies on dye...