A novel bamboo fiber biofilm carrier and its utilization in the upgrade of wastewater treatment plant

Xiao, Jibo; Chu, Shuyi

doi:10.1080/19443994.2014.940397

Cited by 20 publications

(5 citation statements)

References 35 publications

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“…To date, organic materials-based carriers are widely used as microbial carriers in wastewater treatment (Zhang et al, 2008 (Xiao and Chu, 2014;Yang et al, 2015). In a recent study, Yang et al (2015) evaluated the suitability of agriculture wastes (i.e.…”

Section: Organic Materials-based Microbial Carriersmentioning

confidence: 99%

Insights into biofilm carriers for biological wastewater treatment processes: Current state-of-the-art, challenges, and opportunities

Zhao

Liu

Huang

et al. 2019

Bioresource Technology

168

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Biofilm carriers play an important role in attached growth systems for wastewater treatment.This study summarizes the traditional and novel biofilm carriers utilized in biofilm-based wastewater treatment technology. The advantages and disadvantages of traditional biofilm carriers are evaluated and discussed in light of basic property, biocompatibility and applicability.The characteristics, applications performance, and mechanism of novel carriers (including slowrelease carriers, hydrophilic/electrophilic modified carriers, magnetic carriers and redox mediator carriers) in wastewater biological treatment were deeply discussed. Slow release 2 biofilm carriers are used to provide a solid substrate and electron donor for the growth of microorganisms and denitrification for anoxic and/or anaerobic bioreactors. Carriers with hydrophilic/electrophilic modified surface are applied for promoting biofilm formation. Magnetic materials-based carriers are employed to shorten the start-up time of bioreactor. Biofilm carriers acting as redox mediators are used to accelerate biotransformation of recalcitrant pollutants in industrial wastewater.

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Section: Organic Materials-based Microbial Carriersmentioning

confidence: 99%

Insights into biofilm carriers for biological wastewater treatment processes: Current state-of-the-art, challenges, and opportunities

Zhao

Liu

Huang

et al. 2019

Bioresource Technology

168

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“…Nowadays, carriers made of polypropylene, polyvinyl chloride, polyester, fiber and polystyrene are widely used in the biofilm reactor. However, these raw materials are derived from nonrenewable oil resources, and would not be easily degraded once wasted 14 . However, the cost of plastic biocarriers makes them less attractive for applications in developing countries 15 .…”

Section: Introductionmentioning

confidence: 99%

“…Searching for the natural carriers as fixed media for supporting microbial growth and replacement with the synthetic carriers to decrease the cost of treatment is considered an important process in low-income communities 16 . Agricultural waste is high water absorption, which facilitates cell proliferation and biofilm formation, and thus reduces the time required to operate the treatment system 14 . The application of natural materials has attracted significant attention 15 .…”

Section: Introductionmentioning

confidence: 99%

Modification of the Multi-Stage Treatment (Anaerobic- Anoxic- Oxic) by Adding Almond Shells as Biological Carriers

Alshalabi,

Zakieh,

Ajib

2024

Baghdad Sci.J

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In this study, the treatment process Anaerobic- Anoxic- Oxic (A2O) was modified by adding almond shells as biological carriers. The performance of it has been evaluated in two groups for simultaneous removal of organic matter and nutrients (nitrogen and phosphorous) from wastewater. In both groups the hydraulic retention time (HRT) was 12.5 hours and mixed liquor suspended solid (MLSS) was 2000 mg/L. In the first group: The Oxic bioreactor was filled with packing up to 7% on an effective volume basis. In the second group: All bioreactors were filled with packing up to 7% on a volume basis for each tank. The efficiency of the two groups was compared by analyzing the removal efficiencies of COD, SS, NH4+-N, PO4-3. The removal efficiency in the first group was 94.71%, 90.52%, 95.73% and 92.55%, respectively, while in the second group was 96.53%, 89.82%, 98.29% and 95.61%, respectively. The treatment when adding shells in all bioreactors is the best, but the SS removal efficiency decreased slightly, the reason for this is due to the degradation of shells (organic matter). Obtained results indicated the good stability of the modified system without adding any external carbon sources whereas the almond shells have the ability to release carbon. Almond shells have the ability to adsorb pollutants and they were excellent carriers for bacteria (Biofilm).

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“…In recent years, the discharge standards for sewage treatment plants have become stricter, resulting in high or unstable total nitrogen index values in the effluent of existing sewage treatment plants. How to further improve the denitrification capacity has become the primary consideration of sewage treatment plants during their upgrading and renovation [1][2][3]. At present, sewage treatment plants often have magnetic coagulation filters, aerated biological filters, activated sand filters, high-efficiency fiber filters, fiber rotary filters, high-density sedimentation tanks, etc.…”

Section: Introductionmentioning

confidence: 99%

Deep Denitrification of Domestic Sewage by Sulfur-based Mixotrophic Denitrification Filter

2024

Teh. vjesn.

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As a result of relevant policies and regulations, most wastewater treatment plants are faced with upgrading to further improve the level of effluent targets. To this end, this paper conducts an experimental study on deep denitrification in the sulfur Oyster shells mixotrophic nitrification filter process using sulfur as filler. During the experiments, when the water temperature in the mixotrophic pool was 15 °C, the nitrogen load of the inflow was 7.3 × 10 −3 kg/m 3 •d and HRT equaled to 3.5 h, the average TN concentration in the effluent is 3.42 mg/L, and the TN removal rate reaches 54.49%, which can stably meet the core control area standard in the "Discharge Standard of Water Pollutants in Daqing River Basin" (DB13/2795-2018) and are the best operating parameters during the experimental period. The test results show that oyster shells can provide a large amount of alkalinity, alleviating the pH drop in the water column and effectively mitigating the acidification of the water column. Based on experimental calculations, without considering the loss of packing material, the operating cost of the sulphur-mixed denitrification filter process is reduced by $ 0.191 per tonne of water compared with the existing deep treatment unit in the WWTP. The above results show that the sulphur mixer denitrification filter has the ability to degrade the secondary effluent TN in depth, which provides some experimental basis for the sulphur mixer denitrification filter to be used as a deep treatment unit.

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A novel bamboo fiber biofilm carrier and its utilization in the upgrade of wastewater treatment plant

Cited by 20 publications

References 35 publications

Insights into biofilm carriers for biological wastewater treatment processes: Current state-of-the-art, challenges, and opportunities

Insights into biofilm carriers for biological wastewater treatment processes: Current state-of-the-art, challenges, and opportunities

Modification of the Multi-Stage Treatment (Anaerobic- Anoxic- Oxic) by Adding Almond Shells as Biological Carriers

Deep Denitrification of Domestic Sewage by Sulfur-based Mixotrophic Denitrification Filter

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