Experimental Study on Chinese Pharmacy Wastewater Treated by Two-Phase Anaerobic

2011 ◽  
Vol 71-78 ◽  
pp. 5019-5023
Author(s):  
Zi Wei Zhu ◽  
Bin Quan Jiao
Keyword(s):  
Pharmaceutical Industry ◽  
Biogas Production ◽  
Treated Wastewater ◽  
Pollution Potential ◽  
Biochemical Treatment ◽  
Two Phase ◽  
Final Treatment ◽  
Industry Wastewater ◽  
Methanogenic Phase ◽  
Microbial Mass

The performance of two-phase anaerobic in a laboratory-scale operating on traditional Chinese pharmaceutical industry wastewater at various hydraulic retention times was investigated. The wastewater with high pollutant concentration in reactor designed based on two-phase anaerobic principles was analyzed with GC-MS. The effect of controlling the pH of the methanogonic phase of traditional Chinese pharmaceutical industry wastewater digestion on the biogas production rate and pollution potential reduction was also investigated. The reactor was designed to act as a liquid-solid separator, in order to maximize the microbial mass in it, and was operated at different hydraulic retention times. It operated as a two-phase reactor when the pH of the wastewater was controlled in the methanogenic phase. The results of experiment indicate that acidifier discomposes compounds composed of big molecule were degraded into small acid molecule which is more subject to biochemical treatment, and after the final treatment of reactor producing methane, species and contents of compound contained in treated wastewater are obviously reduced.

Process Characteristics Study of Organic Wastewater Treated by Two-Phase Anaerobic Biotechnology

2010 ◽  
Vol 160-162 ◽  
pp. 1136-1141
Author(s):  
Dong Wei Li ◽  
Shao Jian Zhang
Keyword(s):  
Pharmaceutical Industry ◽  
Biogas Production ◽  
Treated Wastewater ◽  
Pollution Potential ◽  
Biochemical Treatment ◽  
Two Phase ◽  
Process Characteristics ◽  
Final Treatment ◽  
Industry Wastewater ◽  
Methanogenic Phase

The performance of two-phase anaerobic in a laboratory-scale operating on traditional Chinese pharmaceutical industry wastewater at various hydraulic retention times was investigated. The wastewater with high pollutant concentration in reactor designed based on two-phase anaerobic principles was analyzed with GC-MS. The effect of controlling the pH of the methanogonic phase of traditional Chinese pharmaceutical industry wastewater digestion on the biogas production rate and pollution potential reduction was also investigated. The reactor was designed to act as a liquid-solid separator, in order to maximize the microbial mass in it, and was operated at different hydraulic retention times. It operated as a two-phase reactor when the pH of the wastewater was controlled in the methanogenic phase. The results of experiment indicate that acidifier discomposes compounds composed of big molecule were degraded into small acid molecule which is more subject to biochemical treatment, and after the final treatment of reactor producing methane, species and contents of compound contained in treated wastewater are obviously reduced.

scholarly journals Influence of Temperature on Biogas Production Efficiency and Microbial Community in a Two-Phase Anaerobic Digestion System

Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 133 ◽  
Author(s):  
Shiwei Wang ◽  
Fang Ma ◽  
Weiwei Ma ◽  
Ping Wang ◽  
Guang Zhao ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Anaerobic Digestion ◽  
Production Efficiency ◽  
Biogas Production ◽  
Two Phase ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Acidogenic Phase ◽  
Methanogenic Phase

In this study, the influence of temperature on biogas production efficiency and the microbial community structure was investigated in a two-phase anaerobic digestion reactor for co-digestion of cow manure and corn straw. The results illustrated that the contents of solluted chemical oxygen demand (SCOD) and volatile fatty acid (VFA) in the acidogenic phase and biogas production in the methanogenic phase maintained relatively higher levels at temperatures ranging from 35–25 °C. The methane content of biogas production could be maintained higher than 50% at temperatures above 25 °C. The microbial community structure analysis indicated that the dominant functional bacteria were Acinetobacter, Acetitomaculum, and Bacillus in the acidogenic phase and Cenarchaeum in the methanogenic phase at 35–25 °C. However, the performances of the acidogenic phase and the methanogenic phase could be significantly decreased at a lower temperature of 20 °C, and microbial activity was inhibited obviously. Accordingly, a low temperature was adverse for the performance of the acidogenic and methanogenic phases, while moderate temperatures above 25 °C were more conducive to high biogas production efficiency.

Pharmaceutical Industry Wastewater: Review of the Technologies for Water Treatment and Reuse

2014 ◽  
Vol 53 (29) ◽  
pp. 11571-11592 ◽  
Author(s):  
Chandrakanth Gadipelly ◽  
Antía Pérez-González ◽  
Ganapati D. Yadav ◽  
Inmaculada Ortiz ◽  
Raquel Ibáñez ◽  
...  
Keyword(s):  
Water Treatment ◽  
Pharmaceutical Industry ◽  
Industry Wastewater

Biogas production from coffee pulp juice: One- and two-phase systems

1984 ◽  
Vol 9 (3) ◽  
pp. 217-230 ◽  
Author(s):  
J.F. Calzada ◽  
E. de Porres ◽  
A. Yurrita ◽  
M.C. de Arriola ◽  
F. de Micheo ◽  
...  
Keyword(s):  
Biogas Production ◽  
Two Phase ◽  
Coffee Pulp ◽  
Phase Systems

Biogas production from cheese whey wastewater: laboratory- and full-scale studies

2014 ◽  
Vol 69 (6) ◽  
pp. 1320-1325 ◽  
Author(s):  
K. Stamatelatou ◽  
N. Giantsiou ◽  
V. Diamantis ◽  
C. Alexandridis ◽  
A. Alexandridis ◽  
...  
Keyword(s):  
High Efficiency ◽  
Cheese Whey ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Full Scale ◽  
Laboratory Scale ◽  
Phase System ◽  
Two Phase ◽  
Set Up ◽  
Cheese Production

A two-phase system for biogas production from cheese whey wastewater (CWW) was designed, set up and operated at laboratory and full scale for a whole cheese production season (8–9 months). The high efficiency and stability of the laboratory-scale system was demonstrated under various organic loading rates (OLRs) reaching 13 g chemical oxygen demand (COD) L−1d−1 and producing up to 9 L L−1d−1 of biogas (approximately 55% in methane). The COD removal was above 95% and the pH was maintained above 6.3 without any chemical addition. The full-scale system was operated at lower OLRs than its normal capacity, following the good response and high stability in disturbances of the laboratory-scale unit.

Treatment of a chocolate industry wastewater in a pilot-scale low-temperature UASB reactor operated at short hydraulic and sludge retention time

2013 ◽  
Vol 67 (6) ◽  
pp. 1353-1361 ◽  
Author(s):  
M. Esparza-Soto ◽  
O. Arzate-Archundia ◽  
C. Solís-Morelos ◽  
C. Fall
Keyword(s):  
Low Temperature ◽  
Retention Time ◽  
Biogas Production ◽  
Pilot Scale ◽  
Uasb Reactor ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Processing Industry ◽  
Sludge Retention Time ◽  
Industry Wastewater

The aim of this work was to evaluate the performance of a 244-L pilot-scale upflow anaerobic sludge blanket (UASB) reactor during the treatment of chocolate-processing industry wastewater under low-temperature conditions (18 ± 0.6 °C) for approximately 250 d. The applied organic loading rate (OLR) was varied between 4 and 7 kg/m3/d by varying the influent soluble chemical oxygen demand (CODsol), while keeping the hydraulic retention time constant (6.4 ± 0.3 h). The CODsol removal efficiency was low (59–78%). The measured biogas production increased from 240 ± 54 to 431 ± 61 L/d during the experiments. A significant linear correlation between the measured biogas production and removed OLR indicated that 81.69 L of biogas were produced per kg/m3 of CODsol removed. Low average reactor volatile suspended solids (VSS) (2,700–4,800 mg/L) and high effluent VSS (177–313 mg/L) were derived in a short sludge retention time (SRT) (4.9 d). The calculated SRT was shorter than those reported in the literature, but did not affect the reactor's performance. Average sludge yield was 0.20 kg-VSS/kg-CODsol. The low-temperature anaerobic treatment was a good option for the pre-treatment of chocolate-processing industry wastewater.

scholarly journals A TREATMENT OF TOXIC SUBSTANCE IN PHARMACEUTICAL INDUSTRY WASTEWATER: A REVIEW

2021 ◽  
Vol 9 (2) ◽  
pp. 410-417
Author(s):  
P. Mukesha, Et. al.
Keyword(s):  
Pharmaceutical Industry ◽  
New Technologies ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Toxic Substance ◽  
Pharmaceutical Compounds ◽  
Pharmaceutical Wastewater ◽  
Trace Concentration ◽  
Inhibitory Compounds ◽  
Industry Wastewater

Pharmaceutical compounds are emerging environmental issue due to their continuous input and persistence to aquatic ecosystem even at low trace concentration. The aim of the present review is to find the effective way to reduce the pollutants in the pharmaceutical wastewater. There are several studies in the aim to develop new processes and new technologies to minimize the volume and toxicity of effluents generated by pharmaceutical industry wastewater. It demonstrates that Advanced oxidation process in a system can be a promising technology to treat pharmaceutical wastewater characterized by simultaneous presence of biodegradable and refractory inhibitory compounds.                       

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