English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

In developed countries the sanitation and treatment of urban wastewater is well sustained and technically solved by means of conventional pipe networks and subsequent centralized treatments. However, developing countries lack these infrastructures and are in need of sustainable, decentralized and economically viable solutions for the disposal of their urban wastewaters. In addition to this, there are situations where the demands of conservation of natural spaces do not allow intensive constructive procedures and which force the implementation of sanitary engineering with less environmental impact. We present the Ecological Wastewater Sewer (EWS), an ecological urban sewerage system that simultaneously transports wastewater and improves its Journal of Green Engineering, Vol. 7 3, 421–450. doi: 10.13052/jge1904-4720.735 This is an Open Access publication. c © 2017 the Author(s). All rights reserved. 422 L. Pozo-Morales et al. quality. This innovative technology is an alternative to conventional sanitation piping that has minimal environmental impact. It is based on a successful previous work for the improvement of artificial wetlands in a pilot scheme and at full-scale on a test site. The EWS is a channel-shaped device that relies on the application of two key developments: a carefully designed cornered stones layout, and the creation of a natural aeration system. This way, it acts as a separating sewage system that guarantees the presence of a chamber of circulating air within the transportation unit, favouring permanent aerobic conditions in the upper levels of the mass of wastewater. Furthermore, its capacity to settle suspended solids allows the EWS to be used as a sedimentor in water purification processes. A real-life application of this system proved successful in the sanitation of a district of Managua (Nicaragua). Working with a 100-metre-long street of 20 one-story houses, the system is reported to still be in full operating order after six years. The conclusions and results drawn from its monitoring are meticulously explained in our paper, as well as the recommendations & guidelines for the design of more EWS units, with aim to the popularization of this affordable, efficient and green approach to wastewater sanitation.

Ecologically Designed Sanitary Sewer Based on Constructed Wetlands Technology � Case Study in Managua (Nicaragua)