Diclofenac inhibited the biological phosphorus removal: Performance and mechanism

Zhao, Jianwei; Xin, Mingxue; Zhang, Jing; Sun, Yingjie; Luo, Siyi; Wang, Huawei; Wang, Yanan; Bi, Xuejun

doi:10.1016/j.chemosphere.2019.125380

Cited by 81 publications

(21 citation statements)

References 44 publications

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“…Anaerobic digestion uses the synergistic effect between microorganisms to convert organic matter into energy materials (Li et al 2019a; Rodríguez-Valderrama et al2020; González-Arias et al2020). Anaerobic digestion not only reduces the volume of fermentation substrate, kills pathogens, but also obtains energy materials (Wei et al 2018; Wang et al 2019;Zhao et al 2020a). Therefore, anaerobic digestion is considered to be a promising technology for PW treatment.…”

Section: Introductionmentioning

confidence: 99%

Improvement of anaerobic co-digestion of plant waste and excess sludge using calcium peroxide

Wang¹,

Zhou

Dai

et al. 2021

Environ Sci Pollut Res

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Plant waste (PW) and excess sludge (ES) are two main organic matters of municipal solid waste. However, there are few reports on their anaerobic co-digestion. In this work, the mixed proportion of PW and ES anaerobic co digestion was rst optimized at mesophilic temperature, and then the anaerobic co-digestion of PW and ES was enhanced with strong oxidant calcium peroxide (CP). The results showed that the optimal mixing ratio of PW and ES was 1/1 (in terms of volatile solids), and the C/N of mixed digestion substrate was 23.5/1, the maximum methane production was 172.6 mL/g (in terms of volatile solids). CP could enhance methane production from anaerobic co-digestion of PW and ES. When the content of CP was 0.2 g/g (in terms of total suspended solids), the maximum methane production was 234.8 mL/g, about 1.4 times of the blank. The mechanism investigation showed that CP promoted the release of organic matter during the co-digestion, and the higher the content of CP, the greater the release of soluble chemical oxygen demand. The presence of appropriate amount of CP promoted the activities of key enzymes in anaerobic fermentation process, and then increased the e ciency of methane production. The results of this work provide an alternative strategy for the resource utilization of PW and ES.

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Section: Introductionmentioning

confidence: 99%

Improvement of anaerobic co-digestion of plant waste and excess sludge using calcium peroxide

Wang¹,

Zhou

Dai

et al. 2021

Environ Sci Pollut Res

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“…The reason for this result may be due to the rapid degradation of simazine residues in the surface soil by strain XMJ‐Z01, which reduces the leakage of simazine into the soil (Yaron, 1989). Because the strain XMJ‐Z01 is an obligate aerobic bacterium, it is easier to survive on the surface of the soil, and the deep soil layer is not suitable for its growth due to low oxygen content (Bazhanov et al , 2017; Zhao et al , 2020). In the control group (0–3 cm), the residual concentration of simazine is significantly reduced, which may be mainly due to the degradation of simazine by natural microorganisms in the soil (Caracciolo et al , 2007; Marcela et al , 2010).…”

Section: Resultsmentioning

confidence: 99%

Application of a simazine degrading bacterium, Arthrobacter ureafaciens XMJ‐Z01 for bioremediation of simazine pollution

Zhu

Yan

et al. 2020

Water & Environment J

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A bacterium named XMJ-Z01 is screened from soil and identified as Arthrobacter ureafaciens, which can efficiently degrade simazine. The strain XMJ-Z01 is highly resistant to simazine and can tolerate simazine at a level of not less than 2000 mg/L. The degradation efficiency of simazine (100 mg/L) in liquid medium by strain XMJ-Z01 can reach about 99.1% in 7 days. Adding a small amount of fresh soil during the degradation of simazine (in culture medium) by strain XMJ-Z01 can improve the degradation efficiency. The use of strain XMJ-Z01 in simazinecontaminated farmland will accelerate the degradation of simazine residues in the soil and reduce its leakage into the deep soil; in addition, it is also beneficial to reduce the adverse effects of simazine on soil enzyme. Therefore, it is considered that strain XMJ-Z01 can be used for bioremediation of simazine pollution in soil.

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“…PAOs are vulnerable to hazardous substances and prone to the process inhibition because of the location of the EBPR process and complex composition of sewage containing potential inhibitors. There are several substances in wastewater which inhibit biological phosphorus removal processpharmaceuticals (doxycycline, tetracycline, diclofenac), heavy metals (copper, tin, silver, chromium), salts, H 2 S and nanomaterials [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Assessment of enhanced biological phosphorus removal process inhibition

et al. 2020

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Wastewater in industrial regions frequently contains substances which are potentially inhibitory to activated sludge treatment processes. Enhanced biological phosphorus removal (EBPR) is vulnerable to process inhibition mostly because of the location at the beginning of the treatment process and complex characteristics of influent. Much knowledge has been developed on the EBPR process; nonetheless, methods used for estimation of the process inhibition vary largely. There is no easily applicable and reliable method available for rapid determination of inhibition of the EBPR process. In this study, a method for evaluation of inhibition on the EBPR process was developed and controlled. In contrast with previous research, a fresh non-acclimated inoculum was used to enhance the possibility to predict the impact for wastewater treatment plant. The efficiency of the process was evaluated based on the values of orthophosphate release and uptake, synthesis and consumption of polyhydroxyalkanoates. 3,5-dichlorophenol (3,5-DCP) was used as a model inhibitory compound. It was found that the EBPR inhibition tests using a non-acclimated sludge need wastewater as the organic carbon source. Furthermore, the length of aerobic period substantially influenced the inhibition test resultsachieved maximum inhibitory concentration (IC 50) values were 2.4 times higher when aerobic phase was 6 h instead of 1.5 h. Consequently, extended aeration period was suggested to diminish the inhibition effect. Finally, the impact of the 3,5-DCP on different activated sludge treatment process using respective standard methods was tested and compared. It was found that EBPR process was similarly to the nitrification a sensitive activated sludge process.

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Diclofenac inhibited the biological phosphorus removal: Performance and mechanism

Cited by 81 publications

References 44 publications

Improvement of anaerobic co-digestion of plant waste and excess sludge using calcium peroxide

Improvement of anaerobic co-digestion of plant waste and excess sludge using calcium peroxide

Application of a simazine degrading bacterium, Arthrobacter ureafaciens XMJ‐Z01 for bioremediation of simazine pollution

Assessment of enhanced biological phosphorus removal process inhibition

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