Horizontal sub-surface flow and hybrid constructed wetlands systems for wastewater treatment

Vymazal, Jan

doi:10.1016/j.ecoleng.2005.07.010

Cited by 733 publications

(389 citation statements)

References 15 publications

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“…Also, the three serial compartments in wetland have probably contributed to improve mineral reduction. The combinations of constructed wetland with others wetlands systems (hybrid systems) are necessary to achieve higher treatment efficiency, especially for nitrogen removal as reported by according to Vymazal (2005Vymazal ( , 2007. Seo et al (2008) observed a good removal of nitrogen and phosphorus for treating agricultural wastewater in hybrid constructed wetlands.…”

Section: Commercial Experimental Sitementioning

confidence: 99%

The Use of Artificial Wetlands to Treat Greenhouse Effluents

Lévesque¹,

Dorais²,

Gravel³

et al. 2011

Acta Hortic.

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) were removed from the effluent. At Laval University, artificial wetlands with Typha latifolia were more efficient than wetlands with Phragmites australis or without plants. Addition of sucrose increased wetlands' microbial population and consequently reduced the mineral content of the wastewater, but increased significantly the emission of greenhouse gases. Results will further be discussed in terms of the best wetland design to treat greenhouse effluents, but also in terms of the environmental impact.

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Section: Commercial Experimental Sitementioning

confidence: 99%

The Use of Artificial Wetlands to Treat Greenhouse Effluents

Lévesque¹,

Dorais²,

Gravel³

et al. 2011

Acta Hortic.

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show abstract

“…The influence of abiotic factors, such as seasonal temperature, fluctuating water inflow rate, as well as natural light regime are location-specific. Thus, similarly to other wastewater bioremediation systems (Vymazal, 2005;Khan et al, 2013;Mani, Kumar, 2014), variable performance efficiency can be expected in different climate zones. Also, biotic factors, such as species selection for AAFW organisms is likely to affect its performance.…”

Section: General Performancementioning

confidence: 99%

Use of Artificial Aquatic Food-Web for Post-Treatment of Domestic Wastewater in Cold Climate: A Review

Lavrinovičs

Juhna

2017

Journal of Water Security

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Abstract. Eutrophication-promoting phosphorous loads originating from wastewater treatment plants are commonly controlled by chemical precipitation in the tertiary treatment phase. However, this approach is costly and generates additional waste. Therefore, inexpensive and sustainable methods for wastewater post-treatment are wanted. The artificial aquatic food-web that performs wastewater phycoremediation by algae and subsequent biomass harvest by filter-feeding organisms not only requires low energy consumption but also produces biomass for treatment process cost recovery. Still, the knowledge on its performance at different scales and under different climates are limited. In this review, the application possibilities of the artificial aquatic food-web for domestic wastewater post-treatment is discussed, focusing on its use in cold climate regions. Considering the reduced biological activity of aquatic organisms at low ambient temperature, possible solutions for its performance and prospect application at low temperatures are suggested. Finally, directions for future research regarding the practical use of artificial aquatic food-web are highlighted.

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“…Furthermore, aerobic degradation of dissolved organic matter is developed by the aerobic heterotrophic bacteria. Vymazal in [7] has stated that ammonifying bacteria also degrade organic compounds containing nitrogen under aerobic conditions. The microorganisms use oxygen as a source of energy for growth during the decomposition process of organic carbon to carbon dioxide.…”

Section: Biochemical Oxygen Demand (Bod 5 ) Removalmentioning

confidence: 99%

Aerated steel slag filter system performance study for pollutants removal from domestic wastewater

Hamdan

Ibrahim

2017

MATEC Web Conf.

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Abstract. Nitrogen removal from wastewater often requires a highly cost of chemical treatment to prevent over loading of nutrient in effluent discharge to the surface water body. However, to remove nitrogen it requires a complex process. Therefore, the aim of this study is to develop an aerated rock filter (ARF) system design under Malaysia condition. A pilot-scale VFARF with 2.0 m height and 0.3 m diameter and a HFARF with 1.0 m long and 0.3 m wide and 0.5 m height has been developed at Taman Bukit Perdana Wastewater Treatment Plant (WWTP) Batu Pahat, Johor to monitor the performance of the ARFs for nitrogen removal from domestic wastewater. The optimum value of HLR and aeration rate was 2.72 m 3 /m 3 .day and 10 L/min, respectively. For monitoring the effectiveness of the VFARF and HFARF, influent and effluent twice a week grab samples have been collected and analysed for TKN, Ammonia Nitrogen, BOD5, COD, TSS, Alkalinity, E-coli, pH, Dissolved Oxygen and Temperature. From the study, it was found that the VFARF system has outperformed as the removal efficiency of TKN, AN, TSS, and E-coli was 89%±7%, 97%±2%, 86%±17%, and 97%±2%. The removal efficiency was slightly lower in the HFARF as their removal was 78%±11%, 71%± 12%, 88%±15%, and 91%±16% for TKN, AN, TSS, and E-coli. However, their performance insignificant in removing organic matter, BOD5, COD as the removal efficiencies in the VFARF and HFARF were 84%±13%, 65%±23% and 85%±12%, 75%±21%, respectively. Alkalinity, pH and DO profiles for VFARF and HFARF systems effluent values were average at 107.08±28.35 mg/L, 7.14±0.27, 5.20±0.84 mg/L, 147.24±16.20 mg/L, 6.99±0.15 and 3.75±0.37 mg/L, respectively. Temperature value for this VFARF and HFARF system was 31.1±1.1ºC. From monitoring study between VFARF and HFARF, it found that VFARF system was outperformed than the HFARF in removing nitrogen from domestic wastewater.

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Horizontal sub-surface flow and hybrid constructed wetlands systems for wastewater treatment

Cited by 733 publications

References 15 publications

The Use of Artificial Wetlands to Treat Greenhouse Effluents

The Use of Artificial Wetlands to Treat Greenhouse Effluents

Use of Artificial Aquatic Food-Web for Post-Treatment of Domestic Wastewater in Cold Climate: A Review

Aerated steel slag filter system performance study for pollutants removal from domestic wastewater

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