Constructed wetroofs: A novel approach for the treatment and reuse of domestic wastewater

Zapater-Pereyra, M.; Lavrnić, Stevo; Dien, F. van; Bruggen, J.J.A. van; Lens, Piet N.L.

doi:10.1016/j.ecoleng.2016.05.052

Cited by 19 publications

(20 citation statements)

References 38 publications

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“…The advantages of green roofs and constructed wetlands can be combined in the cramped environment of growing cities by planting wetland plants (Figure 9) on the roofs of buildings [16,182].…”

Section: Combining Green Roofs and Constructed Wetlands In Urban Settmentioning

confidence: 99%

Biodiversity Impact of Green Roofs and Constructed Wetlands as Progressive Eco-Technologies in Urban Areas

2019

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The total amount of sealed surfaces is increasing in many urban areas, which presents a challenge for sewerage systems and wastewater treatment plants when extreme rainfall events occur. One promising solution approach is the application of decentralized eco-technologies for water management such as green roofs and constructed wetlands, which also have the potential to improve urban biodiversity. We review the effects of these two eco-technologies on species richness, abundance and other facets of biodiversity (e.g., functional diversity). We find that while green roofs support fewer species than ground-level habitats and thus are not a substitute for the latter, the increase in green roof structural diversity supports species richness. Species abundance benefits from improved roof conditions (e.g., increased substrate depth). Few studies have investigated the functional diversity of green roofs so far, but the typical traits of green roof species have been identified. The biodiversity of animals in constructed wetlands can be improved by applying animal-aided design rather than by solely considering engineering requirements. For example, flat and barrier-free shore areas, diverse vegetation, and heterogeneous surroundings increase the attractiveness of constructed wetlands for a range of animals. We suggest that by combining and making increasing use of these two eco-technologies in urban areas, biodiversity will benefit.

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Section: Combining Green Roofs and Constructed Wetlands In Urban Settmentioning

confidence: 99%

Biodiversity Impact of Green Roofs and Constructed Wetlands as Progressive Eco-Technologies in Urban Areas

2019

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“…Protect the roof structure from excess moisture and root infringement Ethylene propylene diene monomer liner [10] Bituminous waterproofing membrane [9] Substratum Provides storage depth, hydrolysis, growing media for vegetation and biofilm, and appropriate hydraulic residence time Gravel, soil, sand, polylactic acid (PLA) beads [11] Water Retention Provides water storage, can act as growing media…”

Section: Non-permeable Root Barriermentioning

confidence: 99%

“…To supplement rainwater, additional stored water from a storage cistern or alternatively domestic wastewater should be pumped back and distributed onto the roof surface daily via an irrigation pipe [12]. Water percolates through the wetland roof via horizontal subsurface flow [9]. In cases of overflow, inclined roof constructions may employ rain gutter drainage ( Figure 2) while flat roof constructions may employ discharge chambers calibrated to the desired wetland roof water level [13].…”

Section: Overview Of Wetland Roof Designmentioning

confidence: 99%

“…In cases of overflow, inclined roof constructions may employ rain gutter drainage ( Figure 2) while flat roof constructions may employ discharge chambers calibrated to the desired wetland roof water level [13]. Overflow may be directed towards an overflow cistern or directly back to the sewers or local septic holding tank [9,13].…”

Section: Overview Of Wetland Roof Designmentioning

confidence: 99%

“…Wetland roofs are constructed on available roof surfaces, therefore it can be assumed that the area used does not compete with other uses, which may be the case at ground level [9]. The following discussion will present the current status of applications and research in this specific area of roof greening.…”

Section: Introductionmentioning

confidence: 99%

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Wetland Roofs as an Attractive Option for Decentralized Water Management and Air Conditioning Enhancement in Growing Cities—A Review

Zehnsdorf

Willebrand

Trabitzsch

et al. 2019

Water

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While constructed wetlands have become established for the decentralized treatment of wastewater and rainwater, wetland roofs have only been built in isolated cases up to now. The historical development of wetland roofs is described here on the basis of a survey of literature and patents, and the increasing interest in this ecotechnology around the world is presented. In particular, this article describes the potential for using wetland roofs and examines experience with applications in decentralized water management in urban environments and for climate regulation in buildings. Wetland roofs are suitable as a green-blue technology for the future—particularly in cities with an acute shortage of unoccupied ground-level sites—for the decentralized treatment of wastewater streams of various origins. Positive “side effects” such as nearly complete stormwater retention and the improvement of climates in buildings and their surroundings, coupled with an increase in biodiversity, make wetland roofs an ideal multi-functional technology for urban areas.

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Constructed wetroofs: A novel approach for the treatment and reuse of domestic wastewater

Cited by 19 publications

References 38 publications

Biodiversity Impact of Green Roofs and Constructed Wetlands as Progressive Eco-Technologies in Urban Areas

Biodiversity Impact of Green Roofs and Constructed Wetlands as Progressive Eco-Technologies in Urban Areas

Wetland Roofs as an Attractive Option for Decentralized Water Management and Air Conditioning Enhancement in Growing Cities—A Review

Urban Soil Remediation

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