Digested blackwater treatment in a partial nitritation-anammox reactor under repeated starvation and reactivation periods

Pedrouso, Alba; Tocco, Giaime; Río, Ángeles Val del; Carucci, Alessandra; Morales, Nicolás; Campos, José Luis; Milia, Stefano; Mosquera-Corral, Anuska

doi:10.1016/j.jclepro.2019.118733

Cited by 10 publications

(6 citation statements)

References 29 publications

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“…The lower energy input in nitrogen removal is largely ascribed to a half-nitration process. 38 In addition, from the perspective of all reviewed treatment configurations (Figure S3), few differences pertinent to the energy consumed in the removal of COD and TN were observed (two-way ANOVA; P < 0.05). Take the SBR-ANAMMOX system, for example (Figure 3b).…”

Section: Resultsmentioning

confidence: 84%

“…The average KPI.N values of the ANAMMOX and N/DN groups were 1.3 ± 0.7 and 14.6 ± 9.1 kWh/kg of N (Figure ), respectively. The lower energy input in nitrogen removal is largely ascribed to a half-nitration process . In addition, from the perspective of all reviewed treatment configurations (Figure S3), few differences pertinent to the energy consumed in the removal of COD and TN were observed (two-way ANOVA; P < 0.05).…”

Section: Resultsmentioning

confidence: 99%

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Toward Energy Neutrality in Municipal Wastewater Treatment: A Systematic Analysis of Energy Flow Balance for Different Scenarios

2021

ACS EST Water

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To reduce operational costs and carbon footprints, it is highly desirable to achieve energy neutrality in municipal wastewater treatment plants (WWTPs). We reviewed more than 100 nitrification/denitrification (N/DN)- and anaerobic ammonia oxidation (ANAMMOX)-based wastewater treatment systems. The energy consumption performance of N/DN systems ranged from 0.3 to 4 kWh/kg of COD and from 5 to 15 kWh/kg of N, while those of ANAMMOX-based systems ranged from 1 to 5 kWh/kg of COD and from 0.5 to 1.5 kWh/kg of N. According to an energy balance analysis of typical domestic wastewater (COD = 500 mg/L; TN = 50 mg/L) treatment, the conventional N/DN process consumes an average of 0.5 kWh/m3 (1.78 MJ/m3) more energy than the amount recovered from the digestion and incineration of its sludge. However, if wastewater is pretreated using a chemically enhanced primary treatment or anaerobic treatment (AT), subsequent ANAMMOX-based wastewater treatment systems may realize WWTP energy autarky or even electricity outputs of ≤0.17 kWh/m3. In such a nexus of energy recovery, the biogas generation from the AT or the digestion of sludge would be a more effective way to recover energy than the incineration of dewatered digestates. The combination of early stage COD capture and ANAMMOX is a promising approach to achieving sustainable energy performance in future WWTPs.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Toward Energy Neutrality in Municipal Wastewater Treatment: A Systematic Analysis of Energy Flow Balance for Different Scenarios

2021

ACS EST Water

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“…Black water contains more than 90% of the COD, and more than 80% of the TP, and TN daily load generated in a municipality. COD, TN, and TP concentrations usually are between 1,000-7,000, 100-1,000, and 25-200 mg/L, respectively (Pedrouso et al, 2020). Thus, the segregated treatment of black water, using a first anaerobic treatment stage, makes it much easier for the application of an autotrophic TN removal post-treatment, due to the higher FA and FNA concentrations observed in the bioreactors.…”

Section: Application Of the Anammox Processmentioning

confidence: 99%

“…Thus, the segregated treatment of black water, using a first anaerobic treatment stage, makes it much easier for the application of an autotrophic TN removal post-treatment, due to the higher FA and FNA concentrations observed in the bioreactors. Pedrouso et al (2020) were able to remove above 80% of the TN from anaerobically treated black waters, with around 120 mgN/L, using a one-stage autotrophic process.…”

Section: Application Of the Anammox Processmentioning

confidence: 99%

Post-treatment of anaerobically digested sewage for nutrient removal

Haandel,

Santos,

Allegue

et al. 2024

Anaerobic Treatment of Domestic Wastewater

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Although modern anaerobic sewage treatment systems and in particular the upflow anaerobic sludge blanket reactor (UASB) have demonstrated remarkable performance in tropical and subtropical regions, the effluent quality is generally not compatible with discharge standards in many countries, so post-treatment becomes necessary. In practice, the most widely applied post-treatment options are polishing ponds (PPs) and other aerobic treatment bioreactors. PPs are treatment units treating anaerobically pre-treated wastewater, which distinguishes them from conventional waste treatment ponds, wherein normally raw wastewater is treated. Anaerobic pre-treatment has a very profound influence on the configuration and operation of PPs, as will be shown in this chapter. Other aerobic post-treatments can be realized with conventional activated sludge systems, or more complex technological solutions including membrane bioreactors (MBRs) or trickling filters. The anaerobic–aerobic treatment has important advantages compared to the purely aerobic treatment: the volume and sludge production is much smaller, there is a possibility that the anaerobic–aerobic system operates with energetic self-sufficiency and the concentration of excess sludge is much higher facilitating its processing. An important problem of anaerobic–aerobic treatment is the difficulty of producing a final effluent with low nutrient concentration. Anaerobic sewage treatment reduces the content of biodegradable organic matter in the effluent, limiting in practice the removal of phosphorus to the use of chemical precipitation systems. For the case of nitrogen, the alternatives only go through new processes, which complement the poor capacity of conventional denitrification due to the limited concentration of biodegradable organic matter. This limits in practice, the nitrogen elimination capacity of activated sludge systems or trickling filters treating effluents from UASB reactors. A notable breakthrough could occur if reliable partial nitrification anammox processes for the water line were developed, as these are still under development, or systems in which the dissolved methane present in the anaerobic effluents was used to denitrify, as it has already been observed in some MBRs.

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“…However, in some rural areas (e.g., in China), due to the seasonal population migration (Wang et al, 2017), the amount of BW may show great volatility. Additionally, on account of the different frequencies of urination and defecation, BW is more concentrated in residential areas whereas the one from workplaces or tourist areas is generally more diluted (Pedrouso et al, 2020).…”

Section: Productionmentioning

confidence: 99%

Technologies for pollutant removal and resource recovery from blackwater: a review

Zhang

Chu

Yang

et al. 2023

Front. Environ. Sci. Eng.

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Blackwater (BW), consisting of feces, urine, flushing water and toilet paper, makes up an important portion of domestic wastewater. The improper disposal of BW may lead to environmental pollution and disease transmission, threatening the sustainable development of the world. Rich in nutrients and organic matter, BW could be treated for resource recovery and reuse through various approaches. Aimed at providing guidance for the future development of BW treatment and resource recovery, this paper presented a literature review of BWs produced in different countries and types of toilets, including their physiochemical characteristics, and current treatment and resource recovery strategies. The degradation and utilization of carbon (C), nitrogen (N) and phosphorus (P) within BW are underlined. The performance of different systems was classified and summarized. Among all the treating systems, biological and ecological systems have been long and widely applied for BW treatment, showing their universality and operability in nutrients and energy recovery, but they are either slow or ineffective in removal of some refractory pollutants. Novel processes, especially advanced oxidation processes (AOPs), are becoming increasingly extensively studied in BW treatment because of their high efficiency, especially for the removal of micropollutants and pathogens. This review could serve as an instructive guidance for the design and optimization of BW treatment technologies, aiming to help in the fulfilment of sustainable human excreta management.

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Digested blackwater treatment in a partial nitritation-anammox reactor under repeated starvation and reactivation periods

Abstract: Digested blackwater treatment in a partial nitritation-anammox reactor under repeated starvation and reactivation periods. Journal Of Cleaner Production,

Cited by 10 publications

References 29 publications

Toward Energy Neutrality in Municipal Wastewater Treatment: A Systematic Analysis of Energy Flow Balance for Different Scenarios

Toward Energy Neutrality in Municipal Wastewater Treatment: A Systematic Analysis of Energy Flow Balance for Different Scenarios

Post-treatment of anaerobically digested sewage for nutrient removal

Technologies for pollutant removal and resource recovery from blackwater: a review

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