Application Potential of Wastewater Fertigated Short Rotation Coppice Systems in a Selected Region (Aligarh, UP, India)

Abstract

In many Indian regions, increased wastewater is both a threat to public health and the environment, but it also presents an opportunity as a source of water and nutrients. With less than one-third of India’s wastewater treated and an alarming water scarcity situation, efficient wastewater treatment and reuse schemes are needed to face impending water and fertiliser shortages. This study explores the application potential of wastewater fertigated Short Rotation Coppice systems (wfSRC) as a cost-efficient and promising solution for treating and reusing wastewater in a specific region (400 km2, 184 settlements) of Aligarh (UP), India. Based on real data from a local wfSRC pilot site using bamboo, willow, and poplar, we analysed the system’s treatment performance, nutrient recovery, carbon sequestration potential, land requirements, biomass production potential, and cost–benefit, under various scenarios. The results show that the pilot wfSRC system is efficiently treating 250 m3/day of domestic wastewater on 6864 m2 of land, and serving 2500 people. The land requirements for wfSRC systems vary depending on local conditions (e.g., climate, soil type, wastewater composition) and user demands (e.g., water reuse efficiency, type, and amount of biomass). The calculated areas ranged from 2.75 to 25.7 m2/PE, which equates to a required land area in the whole study region of between 108 and 1006 ha in 2036. This would produce up to 100 DM t/ha/year of valuable biomass. Early local stakeholder involvement and the monitoring of pollutants are recommended as priorities during the planning process for the large-scale implementation of wfSRC systems in India.

Preliminary Planning and Optimization Approach for Wastewater Infrastructure for Regions with Low Data Availability

“…However, in combination with other tools like ALLOWS, many more scenarios could be developed, such as an on-site solution within each village. Also, additional wastewater treatment technologies, such as constructed wetlands [22], could be included in the scenario development, making the analysis more complex. In conjunction with different treatment technologies, the issue of the reuse of treated effluent could be addressed in the scenarios.…”

“…Countries like India, with a high population and rapid demographic growth, are prone to wastewater-related risks [12,21]. The study region with an area of about 400 km 2 was selected in Aligarh District-Uttar Pradesh State, India (Figure 1) [22]. The study area (28 • 7 ′ 26.05 ′′ N-28 • 0 ′ 28.75 ′′ N, 78 • 15 ′ 32.87 ′′ E-78 • 31 ′ 57.97 ′′ E) was located in the Ganga River basin, which is of great importance to India owing to its historical, cultural, religious, ecological and economic background [23].…”