Nitrogen removal performance and bacterial community in a full-scale modified Orbal oxidation ditch with internal nitrate recycle and biocarriers

Wang, Xianbao; Gao, Chuyue; Jin, Pengkang; Zhang, Yudi; Xie, Yili; Chen, Tiantian; Zhang, Anlong

doi:10.1016/j.jwpe.2020.101791

Cited by 13 publications

(5 citation statements)

References 41 publications

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“…Consequently, it is possible that this bacterial group further promoted the biodegradation of pollutants in the system with 3D-biocarriers. It is worth noting, though, that Nitrospira , a major group of nitrite-oxidizing bacteria (NOB) [ 47 ], were more abundant in K1 ring than in 13X-H biocarriers. These bacteria have been previously reported to be the dominant NOB population in biofilms formed on K1 carriers used in combined systems of upflow blanket filter (UBF)-MBBR reactors [ 48 ].…”

Section: Discussionmentioning

confidence: 99%

Improvement of MBBR-MBR Performance by the Addition of Commercial and 3D-Printed Biocarriers

Banti,

Samaras,

Kostopoulou

et al. 2023

Membranes

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Moving bed biofilm reactor combined with membrane bioreactor (MBBR-MBR) constitute a highly effective wastewater treatment technology. The aim of this research work was to study the effect of commercial K1 biocarriers (MBBR-MBR K1 unit) and 3D-printed biocarriers fabricated from 13X and Halloysite (MBBR-MBR 13X-H unit), on the efficiency and the fouling rate of an MBBR-MBR unit during wastewater treatment. Various physicochemical parameters and trans-membrane pressure were measured. It was observed that in the MBBR-MBR K1 unit, membrane filtration improved reaching total membrane fouling at 43d, while in the MBBR-MBR 13X-H and in the control MBBR-MBR total fouling took place at about 32d. This is attributed to the large production of soluble microbial products (SMP) in the MBBR-MBR 13X-H, which resulted from a large amount of biofilm created in the 13X-H biocarriers. An optimal biodegradation of the organic load was concluded, and nitrification and denitrification processes were improved at the MBBR-MBR K1 and MBBR-MBR 13X-H units. The dry mass produced on the 13X-H biocarriers ranged at 4980–5711 mg, three orders of magnitude larger than that produced on the K1, which ranged at 2.9–4.6 mg. Finally, it was observed that mostly extracellular polymeric substances were produced in the biofilm of K1 biocarriers while in 13X-H mostly SMP.

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Section: Discussionmentioning

confidence: 99%

Improvement of MBBR-MBR Performance by the Addition of Commercial and 3D-Printed Biocarriers

Banti,

Samaras,

Kostopoulou

et al. 2023

Membranes

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“…Another interesting application case of bio-carriers is the enhancement of performance of an Orbal oxidation ditch after their addition. Their inclusion in a modified Orbal oxidation ditch, where internal nitrate recycling was, also, applied in a full-scale municipal wastewater treatment plant, increased the total nitrogen removal at 77% from 69% of the conventional Orbal oxidation ditch (Wang et al 2021). In more details, suspended commercial K3 bio-carriers, with density ranging 0.96-0.98 g/cm 3 and specific surface area of 500 m 2 /m 3 (Fig.…”

Section: Novel Applications Of Commercial and Modified Bio-carriersmentioning

confidence: 97%

“…Extensive research has been conducted regarding the modification and further enhancement of commercial bio-carriers or use of modified natural materials as biocarriers, giving very promising results and advanced wastewater treatment performance (Chen et al 2021;Gao et al 2021;Lee et al 2021;Li et al 2021;Sun et al 2021;Wang et al 2021;Zhang et al 2021a;Zhang et al 2021b).…”

Section: Novel Applications Of Commercial and Modified Bio-carriersmentioning

confidence: 99%

“…Eventually, the total nitrogen removal performance, tested in hybrid sequencing batch reactors, increased by about 16% compared to the unmodified basalt fiber bio-carriers, and up to 95%. (Li et al, 2021), (c) K3 (Wang et al, 2021), (d) K1 with biofilm growth (Sun et al, 2021), (e) Basalt fibers modified with ferric citrate .…”

Section: Novel Applications Of Commercial and Modified Bio-carriersmentioning

confidence: 99%

“…Figure 1. Commercial and modified bio-carriers, (a) RK 04Z098 (Chen et al, 2021), (b) Loofah sponge coated with Bi24O31Br10 photocatalyst(Li et al, 2021), (c) K3(Wang et al, 2021), (d) K1 with biofilm growth(Sun et al, 2021), (e) Basalt fibers modified with ferric citrate.…”

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confidence: 99%

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Enhanced commercial and 3D-printed bio-carriers improve wastewater treatment performance: A critical mini-review

BANTI¹,

SAMARAS²

Global NEST International Conference on Environmental Science &Amp; Technology

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An advanced wastewater treatment technology, simple, uniform, reliable and stable in its operation, which at the same time is highly competitive from the economic and environmental point of view, is Moving Bed Biofilm Reactors (MBBR) performed with the contribution of bio-carriers. This review provides an overview of the most innovative and recent applications of several kinds of bio-carriers to improve wastewater treatment efficiency. In particular, the use of commercial plastic bio-carriers is presented, such as K1, K3, RK 04Z098, or bio-carriers of natural origin after modification of their surface, such as Loofah sponge coated with Bi24O31Br10 photocatalyst and Basalt fibers modified with ferric citrate. Research has shown that the most critical parameter that determines the performance of the MBBR technology is the appropriate design of the carrier in terms of its specific surface, material, texture, and orientation. 3D-printing technology provides the solution on optimization of the bio-carriers’ construction, having flexibility in the design and the possibility of choosing the desirable construction material. The utilization of 3D-printed bio-carriers to improve wastewater treatment performance is still in the early research stages, and almost all the research conducted in this direction is presented in this review.

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Application of Computational Fluid Dynamics in an Outer Channel of Orbal Biological System

Kamal,

Saad,

Zakaria

et al. 2024

Lecture Notes in Civil Engineering

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Nitrogen removal performance and bacterial community in a full-scale modified Orbal oxidation ditch with internal nitrate recycle and biocarriers

Cited by 13 publications

References 41 publications

Improvement of MBBR-MBR Performance by the Addition of Commercial and 3D-Printed Biocarriers

Improvement of MBBR-MBR Performance by the Addition of Commercial and 3D-Printed Biocarriers

Enhanced commercial and 3D-printed bio-carriers improve wastewater treatment performance: A critical mini-review

Application of Computational Fluid Dynamics in an Outer Channel of Orbal Biological System

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