Aerated Constructed Wetlands for Treatment of Municipal and Food Industry Wastewater

Pascual, Ana; Varga, D. de la; Soto, M.; Oirschot, D. Van; Kilian, R.; Álvarez, J.A.; Carvalho, Pedro N.; Brix, Hans; Arias, Carlos A.

doi:10.1002/9781119268376.ch3

Cited by 3 publications

(1 citation statement)

References 71 publications

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“…A pilot study (HIGHWET project, Table 2) at industrial food processing plants in Spain and Denmark tested the effect of effluent recirculation, aeration regime and different phosphorus adsorbent materials in a system that combines a hydrolytic up-flow sludge bed (HUSB) anaerobic digester as primary treatment, hybrid (vertical and horizontal flow (VF-HF)) constructed wetlands (CWs) and two different phosphorus adsorbent materials for treatment of the wastewater characterised by high nutrient loads. The project achieved a decrease of the required surface of conventional HFCWs and improved the final effluent quality in the aerated and non-aerated line, but the aerated VFCW was able to treat a four times higher loading rate with similar treatment efficiency than the non-aerated VFCW (Pascual et al 2018). Dairy wastewaters contain lipids that are hydrolysed into long-chain fatty acids (LCFA) that may be inhibitory to anaerobic microorganisms.…”

Section: Technologies and Productsmentioning

confidence: 99%

A review of nature-based solutions for resource recovery in cities

Kisser¹,

Wirth²,

Gusseme

et al. 2020

Blue-Green Systems

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Our modern cities are resource sinks designed on the current linear economic model which recovers very little of the original input. As the current model is not sustainable, a viable solution is to recover and reuse parts of the input. In this context, resource recovery using nature-based solutions (NBS) is gaining popularity worldwide. In this specific review, we focus on NBS as technologies that bring nature into cities and those that are derived from nature, using (micro)organisms as principal agents, provided they enable resource recovery. The findings presented in this work are based on an extensive literature review, as well as on original results of recent innovation projects across Europe. The case studies were collected by participants of the COST Action Circular City, which includes a portfolio of more than 92 projects. The present review article focuses on urban wastewater, industrial wastewater, municipal solid waste and gaseous effluents, the recoverable products (e.g., nutrients, nanoparticles, energy), as well as the implications of source-separation and circularity by design. The analysis also includes assessment of the maturity of different technologies (technology readiness level) and the barriers that need to be overcome to accelerate the transition to resilient, self-sustainable cities of the future.

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Section: Technologies and Productsmentioning

confidence: 99%

A review of nature-based solutions for resource recovery in cities

Kisser¹,

Wirth²,

Gusseme

et al. 2020

Blue-Green Systems

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Automobile service station waste assessment and promising biological treatment alternatives: a review

Singh

Berawala

Patil

2022

Environ Monit Assess

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Design and Performance of an Innovative Hybrid Constructed Wetland for Sustainable Pig Slurry Treatment in Small Farms

Torrens

Folch

Salgot

2021

Front. Environ. Sci.

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Simple and suitable treatment of swine slurry from small farms is paramount especially in sensitive areas. This paper evaluates the viability of an innovative nature-based technology hybrid system (a Vertical Flow Constructed Wetland followed by a Horizontal Flow Constructed Wetland both planted with reeds – Phragmites australis) to treat swine slurry for further land application or discharge in water bodies with reduced nitrogen impact. Physicochemical parameters, bacterial indicators, surface deposits and biomass inside the filters were monitored. The hybrid configuration offered a dual function for simultaneous solid-liquid separation and biological treatment. Removal of organic matter and suspended solids was very high (>80% for SS and >75% for COD and BOD5) while the overall nitrogen load removal was 65%, due to the combined nitrification/denitrification processes, thus effectively reducing swine slurry nitrogen content. The influence of temperature and design and operational parameters on the treatment efficiency and the hydraulic behavior were also studied. The vertical constructed wetland achieved good hydraulic performance with no clogging problems, despite high pollutant loads. Some of the pollutants were retained and mineralized in the surface deposit layer, increasing around 20 cm each year. This organic biosolid layer improved filtration efficiency. The high ammonia contents interfered with the growth of Phragmites australis, while the high concentration of suspended solids and organic matter determine the operation and design to be implemented.

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Aerated Constructed Wetlands for Treatment of Municipal and Food Industry Wastewater

Cited by 3 publications

References 71 publications

A review of nature-based solutions for resource recovery in cities

A review of nature-based solutions for resource recovery in cities

Automobile service station waste assessment and promising biological treatment alternatives: a review

Design and Performance of an Innovative Hybrid Constructed Wetland for Sustainable Pig Slurry Treatment in Small Farms

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