Towards more efficient nitrogen removal and phosphorus recovery from digestion effluent: Latest developments in the anammox-based process from the application perspective

Guo, Yan; Chen, Yujie; Webeck, Elizabeth; Li, Yu You

doi:10.1016/j.biortech.2019.122560

Cited by 73 publications

(39 citation statements)

References 108 publications

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“…Even though reported N removal efficiencies were high (75-90%), these values might still be enhanced by integrating a pre-denitritation stage (i.e., NO 3 − reduced to NO 2 − ) prior to the anammox reactor (an internal recirculation would be needed for such configuration) in order to remove the nitrate formed by the anammox reaction (i.e., anammox reaction involves ca. 10% N conversion to nitrate) [173]. Use of mechanically stirred reactors resulted in much lower activities than those mentioned above [70,71].…”

Section: Phosphorus Recovery Experiences In Concomitant Configurationmentioning

confidence: 91%

Recovery of Phosphorus from Waste Water Profiting from Biological Nitrogen Treatment: Upstream, Concomitant or Downstream Precipitation Alternatives

et al. 2020

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Mined phosphate rock is the largest source of phosphorus (P) for use in agriculture and agro-industry, but it also is a finite resource irregularly distributed around the world. Alternatively, waste water is a renewable source of P, available at the local scale. In waste water treatment, biological nitrogen (N) removal is applied according to a wide range of variants targeting the abatement of the ammonium content. Ammonium oxidation to nitrate can also be considered to mitigate ammonia emission, while enabling N recovery. This review focuses on the analysis of alternatives for coupling biological N treatment and phosphate precipitation when treating waste water in view of producing P-rich materials easily usable as fertilisers. Phosphate precipitation can be applied before (upstream configuration), together with (concomitant configuration), and after (downstream configuration) N treatment; i.e., chemically induced as a conditioning pre-treatment, biologically induced inside the reactor, and chemically induced as a refining post-treatment. Characteristics of the recovered products differ significantly depending on the case studied. Currently, precipitated phosphate salts are not typified in the European fertiliser regulation, and this fact limits marketability. Nonetheless, this topic is in progress. The potential requirements to be complied by these materials to be covered by the regulation are overviewed. The insights given will help in identifying enhanced integrated approaches for waste water treatment, pointing out significant needs for subsequent agronomic valorisation of the recovered phosphate salts, according to the paradigms of the circular economy, sustainability, and environmental protection.

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Section: Phosphorus Recovery Experiences In Concomitant Configurationmentioning

confidence: 91%

Recovery of Phosphorus from Waste Water Profiting from Biological Nitrogen Treatment: Upstream, Concomitant or Downstream Precipitation Alternatives

et al. 2020

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“…It is vital to ensure the stable and reliable acquisition of both nitrite and ammonium, both of which are reactants in the anammox reaction in the anammox-based process. However, in actual applications, the nitrogen species in wastewater differ according to the source of the wastewater (Guo et al, 2020a). In practice, in the biomass digestion effluent and the landfill leachate, the main nitrogen species is ammonium, while in the fertilizer in runoff, and in explosive production wastewater, the main nitrogen species is nitrate.…”

Section: H I G H L I G H T Smentioning

confidence: 99%

“…Details of these processes are shown in Table 1 for comparison purposes. Among these three processes, it can be seen that the PN/A process is the most presentative and practical since, for different types of actual wastewater, the largest share of nitrogen species is the ammonium (Guo et al, 2020a). Since the performance of the PD/A process and the DAMO/A process is desirable in improving NRE, in recent years, these two processes are increasingly drawing more attention.…”

Section: The Main Anammox-based Processesmentioning

confidence: 99%

“…Over the past several decades, many researchers have engaged in the pursuit of the ultimate goal of the smooth and reliable application of anammox process over a broader scope (Guo et al, 2020a;Fang et al, 2021;Fu et al, 2021). The theoretical knowledge obtained from the research work on this process is extensive, from the chemical perspective, microbial perspective, engineering perspective and process application perspective (Bi et al, 2020;Ding et al, 2021;Li et al, 2021;Qiu et al, 2021;Xu et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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The main anammox-based processes, the involved microbes and the novel process concept from the application perspective

Guo

Luo

Shen

et al. 2021

Front. Environ. Sci. Eng.

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Anammox technology has been widely researched over the past 40-year from the laboratory-scale to full-scale. It is well-known that in actual applications, the solo application of anammox is not feasible. Since both ammonium and nitrite are prerequisites based on the reaction mechanism, the pre-treatment of wastewater is necessary. With the combination of anammox process and other pre-treatment processes to treat the actual wastewater, many types of anammox-based processes have been developed with distinct nitrogen removal performance. Thus, in order to heighten the awareness of researchers to the developments and accelerate the application of these processes to the treatment of actual wastewater, the main anammox-based processes are reviewed in this paper. It includes the partial nitritation/anammox process, the denitratation/anammox (PD/A) process, the denitrifying anaerobic methane oxidation/anammox (DAMO/A) process, and more complex deuterogenic processes. These processes have made the breakthroughs in the application of the anammox technology, such as the combination of nitrification and PD/A process can achieve stability and reliability of nitrogen removal in the treatment of mainstream wastewater, the PD/A process and the DAMO/A have brought about further improvements in the total nitrogen removal efficiency of wastewater. The diversity of functional microbe characteristics under the specific condition indicate the wide application potential of anammox-based processes, and further exploration is necessary. A whole waste treatment system concept is proposed through the effective allocation of above mentioned processes, with the maximum recovery of energy and resources, and minimal environmental impact.

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“…Inorganic nitrogen pollutants are mainly available in the form of ammonia nitrogen (NH 4 + -N), nitrite nitrogen (NO 2 − -N), and nitrate nitrogen (NO 3 − -N). Biological removal of these nitrogen pollutants in wastewater treatment plants mainly involves the process of ammonification, nitrification, denitrification, and anammox processes ( Guo et al, 2020 ; Liu et al, 2020 ). These nitrogen removal processes convert nitrogen pollutants to several different oxidation states, and each process needs special running parameters ( Rahimi et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Advances in Studies on Microbiota Involved in Nitrogen Removal Processes and Their Applications in Wastewater Treatment

et al. 2021

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The discharge of excess nitrogenous pollutants in rivers or other water bodies often leads to serious ecological problems and results in the collapse of aquatic ecosystems. Nitrogenous pollutants are often derived from the inefficient treatment of industrial wastewater. The biological treatment of industrial wastewater for the removal of nitrogen pollution is a green and efficient strategy. In the initial stage of the nitrogen removal process, the nitrogenous pollutants are converted to ammonia. Traditionally, nitrification and denitrification processes have been used for nitrogen removal in industrial wastewater; while currently, more efficient processes, such as simultaneous nitrification-denitrification, partial nitrification-anammox, and partial denitrification-anammox processes, are used. The microorganisms participating in nitrogen pollutant removal processes are diverse, but information about them is limited. In this review, we summarize the microbiota participating in nitrogen removal processes, their pathways, and associated functional genes. We have also discussed the design of efficient industrial wastewater treatment processes for the removal of nitrogenous pollutants and the application of microbiome engineering technology and synthetic biology strategies in the modulation of the nitrogen removal process. This review thus provides insights that would help in improving the efficiency of nitrogen pollutant removal from industrial wastewater.

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Towards more efficient nitrogen removal and phosphorus recovery from digestion effluent: Latest developments in the anammox-based process from the application perspective

Cited by 73 publications

References 108 publications

Recovery of Phosphorus from Waste Water Profiting from Biological Nitrogen Treatment: Upstream, Concomitant or Downstream Precipitation Alternatives

Recovery of Phosphorus from Waste Water Profiting from Biological Nitrogen Treatment: Upstream, Concomitant or Downstream Precipitation Alternatives

The main anammox-based processes, the involved microbes and the novel process concept from the application perspective

Advances in Studies on Microbiota Involved in Nitrogen Removal Processes and Their Applications in Wastewater Treatment

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