Reuse water and urban horticulture: alliance towards more sustainable cities

Abstract

The need to rethink current models of using water resources in the various sectors of human activity is escalating, as thousands of people in different regions of the world are suffering from clean water shortage for their basic daily needs. In this context, the use of recycled water from treated domestic sewage in agricultural activities is gaining ground. Reuse water can combine environmental protection and high agricultural productivity, especially for simultaneously carrying plant nutrients and minimizing demands for catching "noble" fresh water from streams and water sources for irrigation, currently the highest water consuming activity. The increasing urbanization contributes to generate, but also to foster the treatment and use of wastewater, since urban areas are, at one time, chief water consumers and chief sewage producers. Although there are cultural and sanitary impediments for using recycled water on large scale and the knowledge about possible existing treatments is still limited, a safe alternative to integrate the reuse water into the productive process is its use in irrigation projects involving non edible species. Among these, plants used in floriculture and landscaping can be great allies for the development of wastewater-based urban and peri-urban horticulture, encouraging local development, creating jobs and aiding to environmental protection. We critically discuss these possibilities in this article.

Prospects and Risks Related to Potential Transmission of COVID-19 and Other Viruses and Disinfection in Sewage Effluent

“…Table II illustrates a study in Australia reported by Gibbs and Ho (1993), an infectious dose of different viruses to the cause of incidence when sewage water is exposed to the exposed people. (Jaramillo and Restrepo, 2017;Khan, 2018;Weindl et al, 2015) Urban Public urban greenery, Football fields, Institutional playgrounds, residential medians, fireguard utilization, highways horticulture, and golf course (Bizari and Cardoso, 2016;Ma et al, 2015) Environmental reuse Artificial and natural wetlands, augmenting and sustainable stream and river flows (De Santis, 2011;Butt et al, 2005) Industrial reuse Process cooling of broilers and towers (Xu et al, 2019;Sigh et al, 2012) Hepatitis A 1-10 10-100 100-1000 10 3 -10 4…”

El manejo ambiental en las plantas de tratamiento de aguas residuales en el Perú

“…El área de conocimiento que mayor aporte hizo al estudio de la gestión ambiental de las plantas de tratamiento de aguas residuales fue ciencias ambientales debido a la naturaleza de la investigación con un total de 623 documentos, dentro de los cuales se encuentra "Evaluación y optimización del uso de un nuevo coagulante natural (Guazuma ulmifolia) para el tratamiento de aguas residuales lácteas" (Muniz, Silva, & Borges, 2020) el usos de Guazuma ulmifolia se presenta como una alternativa para el tratamiento de las aguas residuales lácteas, por lo que este estudio dio como resultado la evidencia de la novedad, eficiencia, bajo costo y propiedades ecológicas como alternativa para el tratamiento de aguas residuales lácteas en la optimización del tratamiento de estas aguas residuales utilizando un presupuesto menor garantizando la sostenibilidad del servicio. En segundo lugar se encuentra ciencias agriculturales y biológicas con 124 documentos en total, dentro de estos podemos identificar "Reutilización del agua y horticultura urbana: Alianza hacia ciudades más sostenibles" (Bizari & Cardoso, 2020) esta investigación plantea la necesidad de repensar los modelos actuales de uso de los recursos hídricos, por lo que el uso de agua reciclada procedente de aguas residuales domésticas tratadas en actividades agrícolas está ganando terreno, ya que al implementar esta medida se busca la protección ambiental y una alta productividad agrícola; La creciente urbanización contribuye a generar, pero también a fomentar el tratamiento y uso de aguas residuales, ya que las áreas urbanas son, en un tiempo, principales consumidores de agua y principales productores de aguas residuales, por lo que la re utilización de estas aguas se presenta como un plan ambiental que busca mitigar los desechos generados en las zonas urbanas aprovechando en los procesos de agricultura, haciendo así estos procesos renovables y hasta en su momento podrían ser autosustentables.…”

Nonfood GM Crops in Tropical Regions: A Reasonable Way to Promote the Technology for Increased Agricultural Sustainability

“…This is possible because most of these crops are cultivated in tropical regions at marginal areas of urban territories of São Paulo State, Brazil (Figure 1), where most of these types of residues are disposed at low cost and represent an economic and environmental problem for the sustainability of urban and periurban regions of cities. [6] Furthermore, for oil palm, water deficiency is considered the primary agroclimatic limitation for the expansion of culture for biodiesel production. Consequently, the overexploitation of this crop is now leading to the deforestation, pollution, and loss to the biodiversity of several endangered species in the tropical forests in South and Central America, Asia, and Africa.…”

“…Notably, the use of domestic sewage for irrigation could be achieved with the GM crops resistant to salinity stress not only for sugarcane but also for other nonfood crops. This is possible because most of these crops are cultivated in tropical regions at marginal areas of urban territories of São Paulo State, Brazil (Figure ), where most of these types of residues are disposed at low cost and represent an economic and environmental problem for the sustainability of urban and periurban regions of cities …”