The Toxicity of Two Types of Sewage Sludge From Wastewater Treatment Plant for Plants in Czech Republic

Adamcová, Dana; Vaverková, Magdalena Daria; Břoušková, Eliška

doi:10.12911/22998993/62283

Cited by 35 publications

(23 citation statements)

References 22 publications

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“…The positive effects of SS on plant growth have been reported, suggesting the use of SS as organic soil amendment and fertilizer. However, concerns about possible toxicity of SS have also been expressed [57,58]. One parameter that reflects possible toxic influences on plant physiology is chlorophyll fluorescence, which may be used to assess the efficiency of the photosystem II and therefore of the photosynthetic capacity of plants [59].…”

Section: Discussionmentioning

confidence: 99%

Effects of Sewage Sludge Amendments on the Growth and Physiology of Sweet Basil

Burducea

Lobiuc

Asăndulesa³

et al. 2019

Agronomy

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Currently, wastewater treatment plants produce large amounts of sewage sludge. Due to the rich content of organic matter and minerals, sewage sludge can be used as soil amendments for eroded soils. The aim of this work was to assess sewage sludge (SS) in combination with an eroded soil (ES) collected from the North Eastern Romania as growth substrate for sweet basil, and their effect on basil growth and physiology. The experiment was conducted in a greenhouse under controlled environment conditions. The tested substrates were: (1) eroded soil, ES; (2) mixture of eroded soil (15%) + sewage sludge, ES + SS (85%); and (3) sewage sludge, SS (100%). Three types of parameters were studied: morphological traits, physiological, and biochemical parameters. The maximum quantum yield of Photosystem II Fv/Fm was reduced in basil leaves grown on eroded soil (0.80) and was close to the normal value in ES + SS (0.83). Chlorophyll a and the carotenoids content were higher for plants grown on SS and significantly higher for those grown in ES + SS compared with the one of plants grown on ES. The fresh biomass yield and height of basil increased with 44% and 34.5% under ES + SS over ES. Total phenolic content was higher in plants grown on ES (7.34 mg/g dry weight Gallic acid equivalent), which also led to an increased antioxidant activity (44.4%) evaluated by the DPPH (2,2-diphenyl-1-picrylhydrazyl) method. Fourier-Transform Infrared (FT-IR) (4000-400 cm −1 ) spectra of basil did not show significant qualitative differences among the plants from different treatments. The results of this study demonstrated that SS application led to the improvement of the basil morpho-physiological parameters, allowing the growth of basil on ES + SS.

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Section: Discussionmentioning

confidence: 99%

Effects of Sewage Sludge Amendments on the Growth and Physiology of Sweet Basil

Burducea

Lobiuc

Asăndulesa³

et al. 2019

Agronomy

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“…Based on the heat exchanged from wastewater, it is possible to calculate the temperature drop or increase at the inflow of the local wastewater treatment plant, applying Equation (3). The flow rate at the Brno WRRF is reported as 4.222 m 3 s −1 [25]; therefore, the flow to the heat exchanger is 2.13% of the WWRF inflow, while during maximum sewer flow (470 L s −1 ), the percentage increases to 11.1%. The temperature decrease due to heat exchange for heating is equal to 0.045 °C , while the increase due to cooling is 0.056 °C , both calculated at the inflow of the WWRF.…”

Section: Heat Recovery: Influence On the Wastewater Temperaturementioning

confidence: 99%

Energy Recovery from Wastewater: A Study on Heating and Cooling of a Multipurpose Building with Sewage-Reclaimed Heat Energy

et al. 2019

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To achieve technically-feasible and socially-desirable sustainable management of urban areas, new paradigms have been developed to enhance the sustainability of water and its resources in modern cities. Wastewater is no longer seen as a wasted resource, but rather, as a mining ground from which to obtain valuable chemicals and energy; for example, heat energy, which is often neglected, can be recovered from wastewater for different purposes. In this work, we analyze the design and application of energy recovery from wastewater for heating and cooling a building in Brno (Czech Republic) by means of heat exchangers and pumps. The temperature and the flow rate of the wastewater flowing in a sewer located in the proximity of the building were monitored for a one-year period, and the energy requirement for the building was calculated as 957 MWh per year. Two options were evaluated: heating and cooling using a conventional system (connected to the local grid), and heat recovery from wastewater using heat exchangers and coupled heat pumps. The analysis of the scenarios suggested that the solution based on heat recovery from wastewater was more feasible, showing a 59% decrease in energy consumption compared to the conventional solution (respectively, 259,151 kWh and 620,475 kWh per year). The impact of heat recovery from wastewater on the kinetics of the wastewater resource recovery facility was evaluated, showing a negligible impact in both summer (increase of 0.045 • C) and winter conditions (decrease of 0.056 • C).Sustainability 2020, 12, 116 2 of 11 source of different types of energy: electrical energy from bioelectrochemical wastewater treatment processes [7,8], low-head hydroelectric energy [9], biogas from anaerobic digestion [10], renewable fuels from residual sludge processing [11,12], and heat energy [13]. The latter is particularly appealing in the framework of water-energy sustainable urban development; in particular, the heat energy recovery potential from wastewater could possibly be even higher than its recoverable chemical energy potential [14,15], and it does not require biological treatment to be converted into a directly usable form. Waste heat from wastewater is reportedly able to generate electrical energy via a thermoelectric generator [16], but the implementation of this is difficult within an urban context. A more accessible technology is the energy recovery from wastewater using heat exchangers installed directly in the sewage collection system [17]. A heat exchanger is installed in direct contact with the wastewater that serves as a heat source or sink, and is later connected to a heat pump and then to the heating and cooling system of a building situated in close proximity. Temperatures of civil wastewater may be more than 25-27 • C in domestic outflows [18], representing a significant thermal energy source [16]; at the inlet of water treatment plants or water resource recovery facilities (WRRFs), the temperature is far lower (15-25 • C or lower, depending on the climate) [16,19,20], and thus,...

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“…Despite the above-mentioned interest on ceramic sludge, its use as fertilizer is still currently under debate since it contains high concentrations of several potentially harmful contaminants that may result in risks to plants and humans (Adamcová et al, 2016). Thus, the present study aimed to examine the physiological and biochemical responses of common bean (Phaseolus vulgaris L.) plants to cultivation in sandy soil amended with industrial ceramic wastewater sludge.…”

Section: Responses Of Common Bean (Phaseolus Vulgaris L) Plants To Tmentioning

confidence: 99%

Responses of common bean ( Phaseolus vulgaris L.) plants to treatment with industrial ceramic-waste water sludge

2019

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T HIS STUDY aimed to investigate the physiological and biochemical responses of common bean (Phaseolus vulgaris L. cv. Valentino) plants grown in virgin sandy soil incorporated with ceramic wastewater sludge (CWWS), at relatively low concentrations (0.5%, 1% and 2%), for 30 days. Within the different levels used of CWWS, especially at 1%, the enhancement of plants growth was generally proportional with the increase in leaf area and chlorophyll content, as well as it associated with higher uptake of P, N and K due to higher content of these metals in the CWWS-amended soil. Sucrose, proline and malondialdehyde (MDA) showed enhanced levels with the increase of CWWS application, while, glutathione (GSH) content of common bean plants showed attenuated levels. These results were in alliance with accumulation of higher levels of Fe and Cu metals inside the plant tissues. Antioxidant enzymes such as catalase (CAT), polyphenol oxidase (PPO), showed significantly enhanced activities with increasing the amended ratio of sludge. This increase was also accompanied with the increase in ascorbic acid (AsA) and total phenol contents and a decrease in the activities of ascorbate oxidase (ASO) and ascorbate peroxidase (APX).

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The Toxicity of Two Types of Sewage Sludge From Wastewater Treatment Plant for Plants in Czech Republic

Cited by 35 publications

References 22 publications

Effects of Sewage Sludge Amendments on the Growth and Physiology of Sweet Basil

Effects of Sewage Sludge Amendments on the Growth and Physiology of Sweet Basil

Energy Recovery from Wastewater: A Study on Heating and Cooling of a Multipurpose Building with Sewage-Reclaimed Heat Energy

Responses of common bean ( Phaseolus vulgaris L.) plants to treatment with industrial ceramic-waste water sludge

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