Horizontal sub-surface flow constructed wetlands Ondřejov and Spálené Poříčí in the Czech Republic – 15 years of operation

Vymazal, Jan

doi:10.1016/j.desal.2008.02.042

Cited by 21 publications

(14 citation statements)

References 23 publications

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“…As a consequence, the processes responsible for pollutant removal do not slow down substantially, and the treatment performance is steady during the year. The steady treatment performance of HF CWs, with the partial exception of ammonia and total nitrogen removal, was reported from Switzerland (Züst & Schönborn, 2003), Norway (Giaever, 2003;Maehlum & Jenssen, 2003), Germany (Kern, 2003;Steinmann et al, 2003), Czech Republic (Vymazal, 2001(Vymazal, , 2009, USA (Dahab & Surampalli, 2001;Hill et al, 2003), Italy (Gorra et al, 2007) or Korea (Ham et al, 2004).…”

Section: Insulation Of the Filtration Bedsmentioning

confidence: 80%

Plants used in constructed wetlands with horizontal subsurface flow: a review

2011

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The presence of macrophytes is one of the most conspicuous features of wetlands and their presence distinguishes constructed wetlands from unplanted soil filters or lagoons. The macrophytes growing in constructed wetlands have several properties in relation to the treatment process that make them an essential component of the design. However, only several roles of macrophytes apply to constructed wetlands with horizontal subsurface flow (HF CWs). The plants used in HF CWs designed for wastewater treatment should therefore: (1) be tolerant of high organic and nutrient loadings, (2) have rich belowground organs (i.e. roots and rhizomes) in order to provide substrate for attached bacteria and oxygenation (even very limited) of areas adjacent to roots and rhizomes and (3) have high aboveground biomass for winter insulation in cold and temperate regions and for nutrient removal via harvesting. The comparison of treatment efficiency of vegetated HF CWs and unplanted filters is not unanimous but most studies have shown that systems with plants achieve higher treatment efficiency. The vegetation has mostly a positive effect, i.e. supports higher treatment efficiency, for organics and nutrients like nitrogen and phosphorus. By far the most frequently used plant around the globe is Phragmites australis (Common reed). Species of the genera Typha (latifolia, angustifolia, domingensis, orientalis and glauca) and Scirpus (e.g. lacustris, validus, californicus and acutus) spp. are other commonly used species. In many countries, and especially in the tropics and subtropics, local plants including ornamental species are used for HF CWs.

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Section: Insulation Of the Filtration Bedsmentioning

confidence: 80%

Plants used in constructed wetlands with horizontal subsurface flow: a review

2011

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“…During last two decades the constructed wetlands with horizontal subsurface flow (HF CWs) have increasingly been used in the Czech Republic to treat municipal wastewater (Vymazal 1995(Vymazal , 1996(Vymazal , 2002(Vymazal , 2009Vymazal and Kröpfelová 2005). The first constructed wetland was put in operation in 1989 and at present, there are about 300 systems in operation.…”

Section: Introductionmentioning

confidence: 99%

Heavy metals in sediments from constructed wetlands treating municipal wastewater

et al. 2010

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Constructed wetlands are commonly used for treatment of municipal sewage. The treatment is usually aimed at removal of organics, suspended solids, nutrients and microbial pollution. The information on removal and fate of heavy metals is very limited. The purpose of this study was to evaluate the amount of sediments and heavy metal concentration in the sediments in filtration beds of seven constructed wetlands with horizontal subsurface flow treating municipal sewage with various length of operation. The results revealed that concentrations of Cd, Ni, Pb, Cu, Cr and Zn in the sediment are mostly comparable with concentrations occurred in natural unpolluted or slightly polluted wetlands. The concentrations are much lower than those found in wetlands impacted with mine drainage waters or wastewater from industrial operations. Concentrations of studied heavy metals exceeded only occasionally limits set by the Czech legislation. However, when heavy metal concentrations are evaluated within the filtration material the concentrations are well below the limits set for soils in the Czech Republic. The results also revealed that concentrations of heavy metals in the sediment do not reflect the time of operation probably due to buildup of sediments from suspended solids contained in wastewaters. However, the sediment mass increases during the course of operation and consequently the metal mass increases as well.

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“…The system consists of a grit chamber, an Imhoff tank and a single 806 m² HF bed filled with gravel (3 -15 mm) (Figures 3.5 and 3.6). The average measured flow was 56.3 m³/d resulting in a HLR of 70 mm/d (Vymazal, 2009). (Vymazal, 2011) and other countries (Vymazal and Kröpfelová, 2008).…”

Section: Case Studymentioning

confidence: 99%

“…The case study presents the oldest HF wetland in the Czech Republic (Vymazal, 2009). The HF wetland in Ondřejov was built in 1991 and has been in operation since then.…”

Section: Case Studymentioning

confidence: 99%

उपचार आर्द्रभूमियााँ

Dotro¹,

Langergraber²,

Molle³

et al. 2021

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उपचार आर्द्रभूमियााँ ‘जैविक अपमिष्ट जल’ िें सातिाृं खृंड है उपचार श्ृंखर ला, जो सीिेज उपचार के विज्ञान और तकनीक की अत्याधुननक प्रस्तुनत देती है। आर्द्रभूमि प्रणामलयों के प्रिुख प्रकार इस खृंड िें िामिल हैं, नाितः: (i) क्षैनतज प्रिाह आर्द्रभूमि; (ii) ऊध्िारधर प्रिाह आर्द्रभूमि; (iii) फ्रें च ऊध्िारधर प्रिाह आर्द्रभूमि; (iv) सघन आर्द्रभूमि; (v) िुक्त जल सतह आर्द्रभूमि; (vi) उपचार आर्द्रभूमि के अन्य अनुप्रयोि। पुस्तक िुख्य अिधारणाओृं, कािकाजी मसद्धाृंतों, अपेक्षक्षत प्रदिरन, डडजाइन िानदृंड, डडजाइन उदाहरण, ननिारण पहलुओृं और पररचालन द्रदिाननदेिों को स्पष्ट और उपचारात्िक तरीके से प्रस्तुत करती है। पुस्तक को उपचार के क्षेत्र के िीर्र वििेर्ज्ञों की एक अृंतरराष्रीय टीि ने मलखा है। श्ृंखर ला के बारे िें: इस बहुप्रिृंमसत श्ृंखर ला िें सात पाठ्यपुस्तकें िामिल हैं - वप्रटृं िें या िुक्त-अमभिि ई-पुस्तकों के रूप िें उपलब्लध - जो जैविक अपमिष्ट जल उपचार के विज्ञान और तकनीक की एक अत्याधुननक प्रस्तुनत प्रदान करती हैं। विकमसत और विकासिील देिों िें छात्रों, िोधकतारओृं और अभ्यासकों द्िारा श्ृंखर ला के सभी खण्डों का व्यापक रूप से उपयोि क्रकया िया है। जैविक अपमिष्ट जल उपचार श्ृंखर ला िें िीर्कर हैं: खृंड 1: अपमिष्ट जल के लक्षण, उपचार और ननपटानखृंड 2: अपमिष्ट जल उपचार के िूल मसद्धाृंतखृंड 3: अपमिष्ट स्स्िरीकरण तालाबखृंड 4: अिायािीय ररएक्टरखृंड 5: सक्रिय कीचड़ और िायुजीिी बायोक्रिल्ि ररएक्टरखृंड 6: कीचड़ उपचार और ननपटानखृंड 7: उपचार आर्द्रभूमियााँ आईएसबीएन: 9781780408767 (पेपरबैक) आईएसबीएन: 9781789062564 (ई-पुस्तक)

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Horizontal sub-surface flow constructed wetlands Ondřejov and Spálené Poříčí in the Czech Republic – 15 years of operation

Cited by 21 publications

References 23 publications

Plants used in constructed wetlands with horizontal subsurface flow: a review

Plants used in constructed wetlands with horizontal subsurface flow: a review

Heavy metals in sediments from constructed wetlands treating municipal wastewater

उपचार आर्द्रभूमियााँ

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