Removal efficiency of subsurface vertical flow constructed wetlands for different organic loads

Langergraber, Günter; Prandtstetten, Christoph; Pressl, Alexander; Rohrhofer, Roland; Haberl, Raimund

doi:10.2166/wst.2007.495

Cited by 29 publications

(12 citation statements)

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“…only in summer), the specific surface area requirements are lower. Experience from Austria shows that the same treatment efficiency can be reached with VF wetlands designed with 2 m²/PE if operated only in summer, meaning effluent water temperatures ≥ 10°C (Langergraber et al, 2007). Experiences on the use of VF wetlands in warmer climates exist for several regions.…”

Section: Design and Water Quality Targetsmentioning

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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Section: Design and Water Quality Targetsmentioning

confidence: 99%

उपचार आर्द्रभूमियााँ

Dotro¹,

Langergraber²,

Molle³

et al. 2021

View full text Add to dashboard Cite

show abstract

“…This could be an indication that the influence of biomass growth on the hydraulic properties has to be considered in the model [18]. Additionally, outdoor experiments have been carried out at experimental wetlands located at the wastewater treatment plant Ernsthofen, Lower Austria [38]. Three VF wetlands with a surface area of about 20 m 2 each have been operated in parallel.…”

Section: Shape Parameters Saturated Hydraulic Conductivity Ksmentioning

confidence: 99%

Applying Process-Based Models for Subsurface Flow Treatment Wetlands: Recent Developments and Challenges

Langergraber

2016

Water

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Abstract:To date, only few process-based models for subsurface flow treatment wetlands have been developed. For modelling a treatment wetland, these models have to comprise a number of sub-models to describe water flow, pollutant transport, pollutant transformation and degradation, effects of wetland plants, and transport and deposition of suspended particulate matter. The two most advanced models are the HYDRUS Wetland Module and BIO-PORE. These two models are briefly described. This paper shows typical simulation results for vertical flow wetlands and discusses experiences and challenges using process-based wetland models in relation to the sub-models describing the most important wetland processes. It can be demonstrated that existing simulation tools can be applied for simulating processes in treatment wetlands. Most important for achieving a good match between measured and simulated pollutant concentrations is a good calibration of the water flow and transport models. Only after these calibrations have been made and the effect of the influent fractionation on simulation results has been considered, should changing the parameters of the biokinetic models be taken into account. Modelling the effects of wetland plants is possible and has to be considered when important. Up to now, models describing clogging are the least established models among the sub-models required for a complete wetland model and thus further development and research is required.

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“…The lowest loaded facility was Schodno, whereas Wieszyno had almost ten times higher pollutants loadings. However, in all analysed HTWs maximum allowable loadings given in the literature (for COD = 40 g/(m 2 ·day) and TN = 20 g/(m 2 ·day), were not exceeded (Langergraber et al 2006;Sardon et al 2006). In TWs in Spain HSSF beds load changed from 0.8 to 23.0 g BOD 5 /(m 2 ·day), and for VSSF beds from 12.8 to 29.8 g BOD 5 /(m 2 ·day).…”

Section: Hybrid Treatment Wetlands (Htws)mentioning

confidence: 75%