Technological reliability of pollutant removal in different seasons in one-stage constructed wetland system with horizontal flow operating in the moderate climate

Jóźwiakowski, Krzysztof; Bugajski, Piotr; Kurek, K.; Cáceres, Ramón; Siwiec, Tadeusz; Jucherski, A.; Czekała, Wojciech; Kozłowski, Kamil

doi:10.1016/j.seppur.2019.116439

Cited by 28 publications

(16 citation statements)

References 40 publications

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“…The wastewater flow rate during the whole research period in the tested systems was 0.4 and 1.0 m 3 /day, respectively. The hydraulic load rate (HLR) in the investigated objects was 0.022 and 0.025 m 3 /m 2 /day, respectively, and the values were four times higher than in a one-stage HF-type CW (0.006 m 3 /m 2 /day) for which the technological reliability had been analyzed in earlier papers [37][38][39].…”

Section: Methodsmentioning

confidence: 77%

“…With regard to wastewater treatment, the reliability analysis based on the Weibull distribution allows to determine the probability of occurrence of a certain value of pollution indicators in treated wastewater, and thus to assess the risk of exceeding the limit values. Thanks to this, it is possible to determine the time of defective operation of the treatment plant, which may be useful in making a decision regarding the operation of the treatment plant and its modernization [37][38][39][40][41][42]. The Weibull distribution is characterised by the following probability density function:…”

Section: Discussionmentioning

confidence: 99%

“…According to Vymazal [10], research on CWs at the beginning of the 21st century mainly included: creation of various technological hybrid systems in order to obtain optimal effects of contaminants removal, and most of all nitrogen; the search for appropriate materials with high phosphorus removal capacity; identification of bacteria participating in wastewater treatment processes; modelling of hydraulics and contaminants removal processes in various types of CWs. In recent years, more and more studies have focused on the reliability of contaminants removal in CWs [35][36][37][38][39][40][41][42][43][44][45]. However, most of the papers mentioned concern the reliability of wastewater treatment in one-stage CWs, and only a few studies demonstrate the reliability of hybrid CWs.…”

Section: Introductionmentioning

confidence: 99%

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Technological Reliability and Efficiency of Wastewater Treatment in Two Hybrid Constructed Wetlands in the Roztocze National Park (Poland)

Micek

Jóźwiakowski

Marzec

et al. 2020

Water

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The paper presents the results of a 3-year study on the technological reliability and the efficiency of typical domestic wastewater treatment in two hybrid constructed wetland systems (CWs) located in the area of the Roztocze National Park (Poland). The studied objects consist of an initial settling tank and a system of two beds of the vertical flow (VF) and horizontal flow (HF) (VF–HF) type with reed and willow. The wastewater flow rate in the constructed wetlands systems (CWs) was 0.4 and 1.0 m3/d, respectively. During the study period (2017–2019) 20 series of analyses were performed and 60 wastewater samples were collected. Based on the obtained results the effects of pollutant removal and the technological reliability were determined, which were specified with the Weibull method. The average efficiency of biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) removal was 96–99%. Slightly lower effects were obtained in the case of total phosphorus (TP) removal (90–94%), as well as for total suspended solids (TSS) (80–87%) and total nitrogen (TN) (73–86%) removal. The analysed CWs were characterised by 100% technological reliability for BOD5 and COD, as well as a good reliability for TSS and TP (87–100%) but slightly lower for TN removal (35–89%). Hybrid CWs of VF–HF type should be recommended to use in protected areas for wastewater treatment and water resources quality protection.

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Section: Methodsmentioning

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Technological Reliability and Efficiency of Wastewater Treatment in Two Hybrid Constructed Wetlands in the Roztocze National Park (Poland)

Micek

Jóźwiakowski

Marzec

et al. 2020

Water

Self Cite

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“…Using different types of constructed wetlands, it is possible to combine not only different types of plants but also to implement different types of wastewater treatment technologies -with vertical and horizontal flows. Plants such as reeds (Rai et al, 2013), willow (Jozwiakowski et al, 2020), barley, oats, corn, rye (Lapan et al, 2019), as well as combinations from different types of plants (Marzec et al, 2018) were used to form the constructed wetlands.…”

Section: Introductionmentioning

confidence: 99%

Optimum collection and concentration strategies of hydrobionts excess biomass in biological surface water purifying technologies

Malovanyy¹,

Tymchuk²,

Balandiukh³

et al. 2021

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The analysis of perspective collection and concentration technologies of excess biomass in the technologies of wastewater and surface water biological treatment with the use of aquatic organisms has been carried out. The scheme of a life cycle of the aquatic organisms in wastewater and surface water treatment technologies has been proposed. The analysis of technological approaches for biomass collection of three types: aquatic plants and macroalgae; aquatic plants with a developed root system and microalgae of aquatic organisms has been carried out. A strategy for concentrating microalgae has been proposed. The high efficiency of the coagulation-flocculation gravitational thickening method of freshwater microalgae suspensions of the Microcystis aeruginosa species has been confirmed in laboratory conditions.

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“…In CWLs, nutrients in sewage can be harvested as food such as vegetables and fruits (Verhofstad et al 2017). However, the nutrient removal efficiency of CWLs is still not as high in raw sewage treatment because of high amount of organic matter ( Józẃiakowski et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production

Tanikawa

Shimomura

Motokawa

et al. 2021

Water Practice and Technology

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A combined system of an anaerobic baffled reactor (ABR), a down-flow hanging sponge (DHS) reactor, an aquarium tank (AT), and a constructed wetland (CWL) was proposed as a new concept for sewage treatment. The ABR and DHS reactor, AT, and CWL were applied for biological sewage treatment, bioassay, and nutrient removal with food production, respectively. Killifishes and tomatoes were cultivated in the AT and CWL, respectively. In the ABR, 81.3% of total chemical oxygen demand and 76.5% of total biochemical oxygen demand were removed at 5.1 h of the hydraulic retention time (HRT). Most remaining organic matter and 47.1% of ammonia were removed in the DHS reactor. In the CWL, 97.0% of total inorganic nitrogen and 78.6% of phosphate were removed with a 3.87 kg/m2 of tomatoes producing yield at 4.4 days of the HRT. In addition, anaerobic ammonium-oxidizing bacteria Candidatus Scalindua and ammonia-oxidizing bacteria Nitrospira and Nitorosococcus were considered as contributors to nitrogen removal in the CWL. The final effluent's water can be utilized as recycled water by installation of sand filtration and disinfection processes. Therefore, the proposed system can be applied as a low-energy, low-cost sewage treatment system with direct resource recovery.

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Technological reliability of pollutant removal in different seasons in one-stage constructed wetland system with horizontal flow operating in the moderate climate

Cited by 28 publications

References 40 publications

Technological Reliability and Efficiency of Wastewater Treatment in Two Hybrid Constructed Wetlands in the Roztocze National Park (Poland)

Technological Reliability and Efficiency of Wastewater Treatment in Two Hybrid Constructed Wetlands in the Roztocze National Park (Poland)

Optimum collection and concentration strategies of hydrobionts excess biomass in biological surface water purifying technologies

Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production

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