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Prof. Dr. Orhan Yenigün

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Guest Editor

Institute of Environmental Sciences, Boğaziçi University, Bebek, Istanbul 34342, Turkey
Interests: biological treatment processes; anaerobic digestion

Dr. Merve Tunali

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Guest Editor

Empa, Swiss Federal Laboratories for Materials Science and Technology, 9014 Sankt Gallen, Switzerland
Interests: sustainability; life cycle assessment; microplastics

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Dear Colleagues,

Materials used in construction, operation and various other services in wastewater and water treatment plants are explored in this Special Issue of Sustainability. Material choice in relation to energy savings, correct use, reductions, measures for superior functionality, use of nanomaterials and newly developed polymers will all be covered.

We are seeking recent research regarding sustainable material use in water and wastewater treatment facilities and open discussions on energy conservation as well as approaches to establishing energy-neutral operations.

Original research articles and reviews are welcome. Topics of interest include (but are not limited to) the following:

Material use, from plastics to steel structures;
Material–energy nexus;
Carbon footprints of water and wastewater treatment plants;
Wastewater collection and water distribution networks;
Non-revenue water;
Wastewater reuse and reclamation.

We look forward to receiving your contributions.

Prof. Dr. Orhan Yenigün
Dr. Merve Tunali
Guest Editors

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Keywords

sustainable materials
nanomaterials
material–energy nexus

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Research

16 pages, 2151 KiB

Open AccessArticle

Changes in Physicochemical Properties of Typical Subtropical Soils under Different Treated Domestic Wastewater Irrigation Modes

by Jiayu Lu, Hui Wang and Chuanwang Hu

Sustainability 2022, 14(16), 10197; https://doi.org/10.3390/su141610197 - 17 Aug 2022

Cited by 1 | Viewed by 1218

Abstract

Irrigation with treated domestic wastewater (TWW) affects the physicochemical properties of soils, but little research has been conducted for different soils in subtropical regions. Consequently, in order to evaluate the effects of domestic wastewater (treated by A2/O process) irrigation on the hydraulic properties, soil salinity and sodicity of four typical subtropical agricultural soils, a soil-column experiment was conducted for one year with eight cycles of wetting and drying. A clay soil (red soil), a silty clay soil (aquic soil), a loamy clay soil (purple soil), and a silty clay loam soil (paddy soil) were subjected to three irrigation modes: (a) cyclic irrigation with TWW (W1), (b) alternating irrigations with TWW and distilled water (W2), and (c) irrigation with distilled water as a control (CK). Our results indicated that EC values increased significantly (p < 0.05) with TWW irrigation for all the soils. TWW irrigation increased the concentrations of Na⁺, K⁺, Ca²⁺, Mg²⁺, and SAR, ESP values in the red soil, for the W2 treatment especially. In contrast, it decreased Na⁺, K⁺, Ca²⁺, Mg²⁺ accumulation and ESP values in the aquic soil. Moreover, the soil physical properties exhibited correlations with soil salinity. The saturated hydraulic conductivity (Ks) of the red soil, purple soil, and paddy soil were lower under the W1 and W2 treatments than CK, but the Ks of the aquic soil for W1 were 183.7% higher than that under CK. The unsaturated hydraulic conductivity (Kψ) of the purple soil and paddy soil decreased after TWW irrigation, but those of the aquic soil increased. The water-retention capacities (WRCs) of the TWW-irrigated red soil and aquic soil decreased as a consequence of a shift in the pore-size distribution toward wider pores, but the those of the purple soil and paddy soil improved, associated with narrower pores. The W2 treatment alleviated the impact of TWW on the aquic soil, purple soil, and paddy soil but negatively affected the physical properties, salinity, and sodicity of the red soil. Our results will provide useful information for managing soil and water under TWW irrigation in subtropical regions. Full article

(This article belongs to the Special Issue Application of Environmental Material in Wastewater Treatment and Pollution Remediation)

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