Impact of Optimized Flow Pattern on Pollutant Removal and Biogas Production Rate Using Wastewater Anaerobic Fermentation

Huang, Ruyi; Mei, Zili; Liang, Yan; Xiong, Xia; Jun, Wang; Guo, Ting Ting; Luo, Tao; Long, Enshen

doi:10.15376/biores.10.3.4826-4842

Cited by 16 publications

(14 citation statements)

References 15 publications

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“…Rajeshwari (2002) pointed out that the firm attachment of the biological matter to the support surfaces also can be critical to the operation. Various researchers have evaluated such systems for the treatment of P&P mill wastewaters (Haggblom and Salkinojasalonen 1991;Rusten et al 1994;Huang et al 2015). Huang et al (2015) fluidized the sludge particles themselves as a relatively uniform mixture.…”

Section: Anaerobic Fluidized Bedmentioning

confidence: 99%

“…Various researchers have evaluated such systems for the treatment of P&P mill wastewaters (Haggblom and Salkinojasalonen 1991;Rusten et al 1994;Huang et al 2015). Huang et al (2015) fluidized the sludge particles themselves as a relatively uniform mixture.Unlike aerobic systems, in which aeration serves as a means to mix the liquid by the rise of bubbles, anaerobic systems use mechanical agitation, e.g. an impeller, to provide adequate mixing of liquid.…”

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confidence: 99%

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Wastewater Treatment and Reclamation: A Review of Pulp and Paper Industry Practices and Opportunities

Hubbe

Metts

Hermosilla

et al. 2016

BioRes

183

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The pulp and paper (P&P) industry worldwide has achieved substantial progress in treating both process water and wastewater, thus limiting the discharge of pollutants to receiving waters. This review covers a variety of wastewater treatment methods, which provide P&P companies with costeffective ways to limit the release of biological or chemical oxygen demand, toxicity, solids, color, and other indicators of pollutant load. Conventional wastewater treatment systems, often comprising primary clarification followed by activated sludge processes, have been widely implemented in the P&P industry. Higher levels of pollutant removal can be achieved by supplementary treatments, which can include anaerobic biological stages, advanced oxidation processes, bioreactors, and membrane filtration technologies. Improvements in the performance of wastewater treatment operations often can be achieved by effective measurement technologies and by strategic addition of agents including coagulants, flocculants, filter aids, and optimized fungal or bacterial cultures. In addition, P&P mills can implement upstream process changes, including dissolved-air-flotation (DAF) systems, filtration save-alls, and kidney-like operations to purify process waters, thus reducing the load of pollutants and the volume of effluent being discharged to end-of-pipe wastewater treatment plants. Keywords: Wastewater treatment; Pulp and paper manufacturing; Advanced oxidation; Membrane technologies; Clarification; Activated sludgeContact information: a: North Carolina State University, Dept. of Forest Biomaterials, Campus Box 8005, Raleigh, NC 29695-8005; b: WestRock Company, Water and Waste Treatment, 600 S 8th St, Fernandina Beach, FL 32034; c: Department of Agricultural and Forestry Engineering, University of Valladolid, Campus Duques de Soria, E-42004 Soria, Spain; d: Complutense University of Madrid, Department of Chemical Engineering, Ingn. Quim, Facultad de Ciencias Químicas, Ciudad Universitaria s/n,S-N, E-28040 Madrid, Spain; e: Concordia University, Dept. Bldg. Civil & Environm. Engn., 1455 Maisonneuve Blvd, West Montreal, PQ H3G 1M8, Canada; f: University of Jyväskylä, Dept. Chem., Box 35, FI-40014 Jyväskylä, Finland; g: Department of Biology, Center for Environmental and Marine Studies, CESAM, University of Aveiro, 3810-193 Aveiro, Portugal; h: Department of Environment and Planning, Center for Environmental and Marine Studies, CESAM, Aveiro & Department of Materials and Ceramics, Institute of Materials, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal; i: FPInnovations, 570 St. Jean Blvd., Pointe Claire, PQ H9R 3J9, Canada; * Corresponding author: hubbe@ncsu.edu Contents of the Article INTRODUCTIONThe pulp and paper (P&P) industry occupies a challenging position with respect to the natural environment. On the positive side, the industry is based on the usage of renewable, photosynthetic resources. On the other hand, the industry discharges huge quantities of aqueous effluents. Large volumes (up to 70 m 3 ) of wastewater ...

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Section: Anaerobic Fluidized Bedmentioning

confidence: 99%

mentioning

confidence: 99%

Wastewater Treatment and Reclamation: A Review of Pulp and Paper Industry Practices and Opportunities

Hubbe

Metts

Hermosilla

et al. 2016

BioRes

183

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“…Huang et al designed a slurry recirculation digester for the anaerobic digestion of straw granules. It was found that, although the particle size was less than 3 mm, blockages could easily form [13]. Xiong et al reported that in straw digestion, gas recirculation tends to bring straw particles to the liquid surface and deposits crusts on the liquid surface, which is not conducive to digestion [14].…”

Section: Introductionmentioning

confidence: 99%

“…This pilot scale system is situated near a pig farm in Suining City, Sichuan Province, China, which is located at a latitude of 30 • 15 -30 • 55 N and longitude of 105 • 13 -105 • 48 E. Although a number of anaerobic digester pattern have been proposed, most of the studies involved were focus on pH, initial substrate concentration, and chemical oxygen demand (COD), only a few studies have been explored heat transfer performance and economical digester temperature of anaerobic digestion system. Nevertheless, comparing with general anaerobic digester [13,19], higher heat and mass transfer rates are most significant advantages. Therefore, the biogas production performance and heat transfer performance of the MFD were evaluated with respect to the pilot scale digestion.…”

Section: Introductionmentioning

confidence: 99%

Biogas Production and Heat Transfer Performance of a Multiphase Flow Digester

Guo

Zhou

et al. 2019

Energies

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Traditional static anaerobic digestion technology presents the disadvantages of a low gas production rate and long digestion cycle, which is not conducive to the treatment of livestock manure. A 12 m3 multiphase flow anaerobic digester (MFD) was developed in this study to improve the biogas production rate and maintain constant temperature digestion during winters. Full-scale field experiments were conducted on the biogas production rate at different temperatures, the dynamic digestion effects, and the dynamic heating digestion effects of the system at Sichuan, China. A comparison of the dynamic and static digestion results of 50 days indicated that the biogas production for the dynamic digestion (DD) group was 115.22 m3 or 127.1% higher than that of the static digestion (SD) group with the same digestion temperature. The results of the heat transfer performance experiment revealed that the heat transfer rate of the system increased significantly, and the temperature of the biogas slurry increased rapidly. The optimization analysis of the system was based on the experimental results of the relationship between the slurry temperature and biogas production rate, and the economical digestion temperature of the system was proposed and calculated. Different insulation materials or insulation thicknesses have an influence on the economical digestion temperature. Additionally, the economical digestion temperature of the system in which the polystyrene insulation layer with a thickness of 90 mm was used, was found to be 27.2 °C. When digestion temperature was 22.3 °C, the energy efficiency ratio (EER) of dynamic anaerobic digestion system is 1. The advantages of MFD are low biogas production unit cost and high heat and mass transfer rate. However, the disadvantage of high operation energy consumption needs further improvement. And additional energy was required when system digestion temperature below 22.3 °C. The proposed MFD and dynamic anaerobic digestion system can play a significant role in using biomass resources and promoting the development of biogas projects.

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“…Therefore, the biogas industry calls for more progress in this aspect. With the rapid development of biogas industry, especially the vigorous development of large-scale biogas projects, many countries have replaced traditional household biogas digesters with large-scale biogas projects [9][10][11], which puts forward higher requirements for the design of agitation process [12][13]. The large-scale biogas plants such as Deqingyuan Ecological Farm were constructed, with the annual treatment capacity of 80,000 t of chicken manure and 100,000 t of sewage [14].…”

Section: Introductionmentioning

confidence: 99%

A Review on the Research of Promoting Biogas Fermentation Efficiency by Mixing

Huang¹

2018

JEECE

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Mixed agitation can significantly improve the efficiency of anaerobic fermentation, which is shown by the remarkable improvement of biogas production and pollutant removal rate, so it has become an indispensable auxiliary process in modern biogas engineering. However, the internal mechanism of how agitation improves the fermentation efficiency is not clear, so it is difficult to find the best agitation form under complex conditions. However, in recent years, more research results have been obtained in this field. The effects of various agitation forms have been continuously verified on different feedstock characteristics under different fermentation and operating conditions, and the mechanism has been gradually clarified. The most important achievement is that in the 1990s it was clear that continuous agitation would impact the fermentation system, so batch agitation is the correct way to improve the fermentation efficiency. Since the 21st century, the latest research has focused on setting the operating parameters of batch agitation. Researchers have made greatly progress in all the aspects of medium, mode, power, speed and duration of agitation, and optimized the mixing scheme. Some studies have also revealed that stirring will affect the temperature field, impurity removal, toxicity accumulation and so on, and the optimal design of mixing scheme should take into account the comprehensive effects of all aspects. In this paper, the main worldwide research achievements in this field made in recent years are reviewed, and the internal mechanism that agitation can improve the anaerobic fermentation efficiency of biogas is clarified to a certain extent, and the suitable agitation forms under certain conditions are suggested.

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Impact of Optimized Flow Pattern on Pollutant Removal and Biogas Production Rate Using Wastewater Anaerobic Fermentation

Cited by 16 publications

References 15 publications

Wastewater Treatment and Reclamation: A Review of Pulp and Paper Industry Practices and Opportunities

Wastewater Treatment and Reclamation: A Review of Pulp and Paper Industry Practices and Opportunities

Biogas Production and Heat Transfer Performance of a Multiphase Flow Digester

A Review on the Research of Promoting Biogas Fermentation Efficiency by Mixing

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