Biological pretreatment of tannery wastewater using a full-scale hydrolysis acidification system

Wang, Ke; Li, Weiguang; Gong, Xiaojuan; Li, Xiangkun; Liu, Weijie; He, Chao; Wang, Zhe; Minh, Quan Nguyen; Chen, Chia-Lung; Wang, Jing‐Yuan

doi:10.1016/j.ibiod.2014.05.019

Cited by 44 publications

(14 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The average COD of the Reactor B effluent was 375 mg/L and the removal rate was about 10.9%. Wang et al (2014) reported that the COD removal rates of hydrolysis acidification were about 26.9%, 28% and 30-40% when treating sweet potato starch wastewater, Chinese traditional medicine wastewater and tannery wastewater, respectively. The removal rate in this study is lower than some traditional hydrolysis acidification process.…”

Section: Resultsmentioning

confidence: 99%

Improving hydrolysis acidification by limited aeration in the pretreatment of petrochemical wastewater

Zhou

Wang

et al. 2015

Bioresource Technology

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Improving hydrolysis acidification by limited aeration in the pretreatment of petrochemical wastewater

Zhou

Wang

et al. 2015

Bioresource Technology

View full text Add to dashboard Cite

“…Pre-treatment processes can either be physical, chemical, and biological to mention but a few, which are mainly used to remove contaminants contained in PSW effluent. Biological processes are processes where living microbial organisms are used [15], chemical processes involve the addition of chemicals like coagulant [16]. Physical processes would refer to conventional process that mainly utilize screens of different aperture sizes, fat traps and grit chambers for removal of larger particles in a conventional method [17].…”

Section: Types Of Wastewater Pre-treatment Processesmentioning

confidence: 99%

Current and Functional Reactor Designs in Poultry Slaughterhouse Wastewater Treatment

2019

SETWM-19, ACBES-19, EEHSS-19 Nov. 18-19, 2019 Johannesburg (South Africa)

View full text Add to dashboard Cite

Poultry slaughterhouse industry consume high volume of portable water and generate large volume of wastewater which contain high Chemical Oxygen demand, Total suspended solids, fats, oil and grease (FOG). In order to mitigate the disposal of raw poultry slaughterhouse wastewater (PSW) effluent, various technologies such as chemical-DAF, electrocoagulation, EGBS and UASB reactors have been used to treat the PSW. However, most of these technologies have operational challenges which range from clogging of reactors, long processing time and low efficiencies. This paper aims to highlight challenges faced during operation of these reactors and also motivate for design improvement to mitigate the deficiency.

show abstract

“…Hydrolysis can not only partially remove COD by fermentation and maybe also respiration of some of the hydrolysis products, but biodegradability can also be improved. Hydrolysis has been used for a lot of refractory feed, including both solid and liquid waste such as lignocellulosic biomass (e.g., sugarcane bagasse and rice straw) [ 8 ], excess sludge [ 9 ], food waste [ 10 ] and refractory/particulate-rich wastewater from tanneries [ 11 ] and the petrochemical industry [ 12 ]. The inhibiting issue of the antibiotic (e.g., tetracycline) production of wastewater for the following biological process could be avoided through the use of hydrolysis with a BOD/COD ratio increase [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Pilot-Scale Hydrolysis-Aerobic Treatment for Actual Municipal Wastewater: Performance and Microbial Community Analysis

Bian

Gong

Wang

2018

IJERPH

View full text Add to dashboard Cite

Low-energy cost wastewater treatment is required to change its current energy-intensive status. Although promising, the direct anaerobic digestion of municipal wastewater treatment faces challenges such as low organic content and low temperature, which require further development. The hydrolysis-aerobic system investigated in this study utilized the two well-proven processes of hydrolysis and aerobic oxidation. These have the advantages of efficient COD removal and biodegradability improvement with limited energy cost due to their avoidance of aeration. A pilot-scale hydrolysis-aerobic system was built for performance evaluation with actual municipal wastewater as feed. Results indicated that as high as 39–47% COD removal was achieved with a maximum COD load of 1.10 kg/m3·d. The dominant bacteria phyla included Proteobacteria (36.0%), Planctomycetes (15.4%), Chloroflexi (9.7%), Bacteroidetes (7.7%), Firmicutes (4.4%), Acidobacteria (2.5%), Actinobacteria (1.8%) and Synergistetes (1.3%), while the dominant genera included Thauera (3.42%) and Dechloromonas (3.04%). The absence of methanogens indicates that the microbial community was perfectly retained in the hydrolysis stage instead of in the methane-producing stage.

show abstract

Biological pretreatment of tannery wastewater using a full-scale hydrolysis acidification system

Cited by 44 publications

References 25 publications

Improving hydrolysis acidification by limited aeration in the pretreatment of petrochemical wastewater

Improving hydrolysis acidification by limited aeration in the pretreatment of petrochemical wastewater

Current and Functional Reactor Designs in Poultry Slaughterhouse Wastewater Treatment

Pilot-Scale Hydrolysis-Aerobic Treatment for Actual Municipal Wastewater: Performance and Microbial Community Analysis

Contact Info

Product

Resources

About