Evaluation of Vertical-Flow Constructed Wetlands for Swine Wastewater Treatment

Sarmento, Antover Panazzolo; Borges, Alisson Carraro; Matos, Antônio Teixeira de

doi:10.1007/s11270-011-0924-4

Cited by 20 publications

(15 citation statements)

References 21 publications

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“…A correlation coefficient r of 0.97 was observed between the CoD removal percentages and the abundances of aerobic bacteria in the three-step series CRi system, indicating that the correlation was very obvious. This also indicated that microbes were playing a key role in the removal of organic matter, which was in agreement with some previous studies [10][11][12][13][14][15].…”

Section: Distribution Of Aerobic Ammonifying Bacteriasupporting

confidence: 93%

A Study on Mechanism of Organic Matter Removal in a Three-step Series Constructed Rapid Infiltration System Used for Domestic Wastewater Treatment

Ka¹,

Wang²,

Zh³

2017

JRST

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This study focused on domestic wastewater in a campus and investigated chemical oxygen demand (COD) removal efficiency and removal mechanism in a wastewater treatment system using three-step series constructed rapid infiltration (CRI). The experimental results indicated that the three-step series CRI system led to COD removal of 79.65%, a value 6% greater than that in a system using conventional CRI. Moreover, the effluent water quality of the three-step series CRI system met the first level criteria A as specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002). Total organic matter and particulate organic matter in the wastewater were removed in the first compartment of the system by 54% and 83%, respectively. The quantity of aerobic ammonifying bacteria decreased from top to bottom along the compartments in the system, and was obviously higher than in the conventional CRI system. The dehydrogenase activity showed an M-shaped variation pattern in which two peak activity values were observed. The COD removal efficiency showed a very significant correlation with the aerobic bacteria quantity (correlation coefficient r = 0.97), and showed a relatively significant correlation with the dehydrogenase activity (r = 0.64). The biofilm mass and the active biofilm mass showed M-shaped variation patterns, and were obviously higher than in the conventional CRI system. The COD removal efficiency showed a relatively significant correlation with the weight of the active biofilm mass (r = 0.73).

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Section: Distribution Of Aerobic Ammonifying Bacteriasupporting

confidence: 93%

A Study on Mechanism of Organic Matter Removal in a Three-step Series Constructed Rapid Infiltration System Used for Domestic Wastewater Treatment

Ka¹,

Wang²,

Zh³

2017

JRST

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“…Nevertheless, the average TKN removal did not change significantly (p>0.05) ( Table 3). A satisfactory efficiency of TKN removal was obtained for all systems in the three operation phases, with values higher than those observed by Sarmento et al (2012) when treating swine wastewater in VFCWs (28 to 37%) and a removal of 17%observed by Vymazal & Kröpfelová (2011) in the initial two months of VFCW monitoring in the domestic sewage treatment.…”

Section: Resultsmentioning

confidence: 78%

Nutrient Removal From Swine Wastewater in a Combined Vertical and Horizontal Flow Constructed Wetland System

Boas

Fia

et al. 2018

Eng. Agríc.

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This study aimed to assess the performance of a combined vertical flow (VFCW) and horizontal subsurface-flow (HFCW) constructed wetland systems built on a pilot scale and submitted to different configurations and organic load application rates of pre-treated swine wastewater (SWW) in anaerobic systems on the nitrogen and phosphorus removal.The average values of redox potential in the systems were between anoxic and aerobic conditions, favoring an increased nitrate concentration in VFCW. Nitrogen removal by VFCW-HFCW system can be considered as satisfactory, reaching removal values of 75%. VFCW and HFCW proved to be limited in phosphorus removal, reaching values of 48%.

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“…Based on the analyses results, the nutrients/Na accumulation by Tifton 85 bermudagrass was calculated using Eq 1 [ 19 ]. where, A TN, K, TP or Na —nutrient or Na accumulation (g), CNutri—content of nutrients or Na in dry matter of the aerial part of Tifton 85 bermudagrass (g g -1 ); DMY—dry matter of the aerial part of Tifton 85 bermudagrass.…”

Section: Methodsmentioning

confidence: 99%

Effects of gibberellic acid on Tifton 85 bermudagrass (Cynodon spp.) in constructed wetland systems

et al. 2018

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This study aimed to evaluate 1) the influence of gibberellic acid (GA3) in the development of Tifton 85 bermudagrass grown in constructed wetland systems (CWs) and 2) the plant's capacity to remove nutrients and sodium from synthetic municipal wastewater (SMW). The experiment was carried out in Viçosa, Minas Gerais, Brazil, and consisted of foliar applications of GA3 set in randomized blocks design, with four replicates and 6 treatments as following: NC (control with plants); 0 μM GA3; N1: 5 μM GA3; N2: 25 μM GA3; N3: 50 and N4: 100 μM GA3 per CWs, NC* (control with no plants): 0 μM GA3. The study was conducted over two crop cycles in the spring 2016. The parameters used to evaluate the performance of the Tifton 85 bermudagrass were its plant height, productivity, chlorophyll measurement, number of internodes, nutrients and Na removals. Chemical analyses of the effluents were conducted. In response to the application of GA3, the increase in height of Tifton 85 bermudagrass in the first crop cycle was higher than the increase in height in the second crop cycle. The decrease in plant growth in response to GA3 in the second crop cycle may be linked to the age of the plant tissue and climatic conditions. The greater growth of the plants cultivated in the CWs allows a more efficient removal of pollutants, using simple management and low cost. The results suggest that applying 50 μM of GA3 to the development of Tifton 85 bermudagrass provides higher dry matter yield and removal of nitrogen, phosphorus, and sodium for the first crop cycle in CWs. However, in the second crop cycle, the application of GA3 had no effect on dry matter production and nutrient removal by Tifton 85 bermudagrass in CWs.

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Evaluation of Vertical-Flow Constructed Wetlands for Swine Wastewater Treatment

Cited by 20 publications

References 21 publications

A Study on Mechanism of Organic Matter Removal in a Three-step Series Constructed Rapid Infiltration System Used for Domestic Wastewater Treatment

A Study on Mechanism of Organic Matter Removal in a Three-step Series Constructed Rapid Infiltration System Used for Domestic Wastewater Treatment

Nutrient Removal From Swine Wastewater in a Combined Vertical and Horizontal Flow Constructed Wetland System

Effects of gibberellic acid on Tifton 85 bermudagrass (Cynodon spp.) in constructed wetland systems

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