Performance of Large-Scale Ornamental Wetlands for Municipal Wastewater Treatment: A Case Study in a Polluted Estuary in the Gulf of Mexico

Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 2120 - 2120

Published: March 1, 2025

This study investigates the performance of large-scale ornamental treatment wetlands (TW) for municipal wastewater in municipality Nautla, Veracruz, Mexico, specifically within a contaminated estuary Gulf Mexico. The research employed wetland system that integrates mixed flow methods, including vertical subsurface (VSSF) and horizontal (HSSF), to optimize operational, maintenance, energy costs. Over monitoring period from 15 October 2022 17 September 2023, achieved remarkable efficiencies removal chemical oxygen demand (COD), NH3-N, NH4-N, NO2-N, NO3-N, total nitrogen (TN), with rates 93.37%, 93.37%,91.36%, 91.29%, 95.74%, 97.36%, 71.69%, 92.26% 91.45%, respectively. effluent complied water quality standards established by official Mexican standard NOM-001-SEMARNAT-2021, demonstrating effectiveness this TW configuration treating characterized high demand, nitrogen, phosphorus levels. results are especially relevant tropical climates, where temperatures humidity can affect microbial activity nutrient cycling, potentially enhancing reducing construction management highlights viability as sustainable solution climates provides valuable information future implementation design criteria.

Language: Английский

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Propose canal diversion surface flow constructed wetland for drainage water treatment: a Tala drain Egypt's Nile Delta

Applied Water Science, Journal Year: 2025, Volume and Issue: 15(5)

Published: April 29, 2025

Abstract This study proposed a canal diversion surface flow constructed wetland (CWT) to treat the drainage water in Tala Drain Gharbia Governorate where Nile Rosetta Branch is its outfall. The treated will be used for irrigation purposes. treatment system consists of sedimentation pond, CWT with reed plants, and storage pond. Field data on hydraulic, climatic, influent concentrations were collected. first order P-K-C* relaxed tanks was applied design CWT. results indicated that 2400 m 3 /d discharge, BOD pond area 2600 2 (260 long 10 broad) required one-day hydraulic retention 1.0 depth. controlled by winter four parallel CWTs each one 12,480 , loading rate 0.05 m/d, period (HT) 2.76 days. balance indicates minimum maximum losses 14%, respectively, recorded January June operation discharge are 2482 2741m /d, respectively. rates elimination BOD, TN, TP, FC showed 62, 58.4, 43, 99.8%, respectively indicating good quality uses. still far from drinking standards needs purification. green wastewater region similar regions help decision-makers as primary strategic resource management ecological solution meet United Nations' Water Sustainable Development Goals.

Language: Английский

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Response of Nitrogen Removal Performance and Microbial Distribution to Seasonal Shock Nutrients Load in a Lakeshore Multicell Constructed Wetland

Processes, Journal Year: 2023, Volume and Issue: 11(9), P. 2781 - 2781

Published: Sept. 18, 2023

Multicell constructed wetlands (MCWs) on lakeshores are a prospective treatment technique. However, the factors affecting nutrient removal performance of lakeshore MCWs at field scale unclear. This study chose field-scale MCW with highest mass efficiency (approximately 49,175.12 mg m−2 day−1) for total nitrogen in wet season to investigate response and microbial distribution seasonal shock nutrients load. The loading rates were as high 43~72 times over those dry season. Hence, storage pond (SP), forebay retention cell, was necessary mitigate loads influent, which is beneficial system. two major genera sediments heterotrophic nitrification–aerobic denitrification bacteria, abundance species nitrogen-related functional higher than According results redundancy analysis, hydraulic residence time (29.4%, F = 2.2, p < 0.1) rate (85.9, 36.5, 0.05) explaining community variation, instead environmental (temperature, pH, dissolved oxygen). influent periodic saturation contributed complicated oxygen exchange environment resulting microbes, MCWs. provided scientific basis optimal design lakeshores.

Language: Английский

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Performance Evaluation of a Pilot-Scale Constructed Wetland with Typha latifolia for Remediation of Domestic Wastewater in Zimbabwe

Water, Journal Year: 2024, Volume and Issue: 16(19), P. 2843 - 2843

Published: Oct. 7, 2024

The management of wastewater remains a challenge, particularly in developing countries. potential use constructed wetlands to treat is promising but their contaminant removal efficiencies, tropical country such as Zimbabwe, are not fully understood. A pilot-scale study was undertaken Zimbabwe evaluate the efficiency vertical-flow planted with Typha latifolia treatment domestic wastewater. Four pilot subsurface wetland units (measuring 1 m × 1.1 m) were built from concrete. filled waste rock nickel mine. Three while fourth one left unplanted, acting control. Each unit loaded at rate 220 dm3/day. Physico-chemical and bacteriological parameters analyzed during winter season. bacterial concentrations significantly lower effluent than influent, system achieved maximum removals for BOD5, COD, TDS, TSS, nitrates, phosphates, phosphate pentoxide, phosphorus, E. coli 56.01%, 82.87%, 30.61%, 90.40% 17.26%, 35.80%, 36.19%, 40.64%, 90.28%, respectively. shows that systems can be successfully established physical, chemical, microbial contaminants

Language: Английский

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