Pretreatment of Poultry Processing Wastewater in a Pilot-Scale Anaerobic Filter

1990 ◽  
Vol 22 (9) ◽  
pp. 9-16 ◽  
Author(s):  
S. R. Harper ◽  
C. C. Ross ◽  
G. E. Valentine ◽  
F. G. Pohland
Keyword(s):  
Retention Time ◽  
Low Cost ◽  
Packed Bed ◽  
Pilot Scale ◽  
Laboratory Scale ◽  
Packed Bed Reactor ◽  
Processing Plant ◽  
Oil And Grease ◽  
Working Volume ◽  
Poultry Processing

Wastewater from a typical poultry processing plant in the southeastern U.S.A. was treated on site with a pilot-scale anaerobic packed-bed reactor. The reactor had a working volume of 3.2 m3, was filled with 15-cm diameter polyethylene random-pack media, and was operated at 35°C with a retention time of 21 hours and at a loading rate of 2.8 kgCOD/m3d−1. Under these conditions, treatment efficiencies were sufficient to meet typical surcharge-free municipal discharge requirements, with effluent soluble COD of 440 mg/L, soluble BOD5 of 190 mg/L, fats, oil and grease (FOG) of 10 mg/L, and total suspended solids of 140 mg/L. Results from pilot operation are compared to those of previous laboratory-scale studies, where similar results were obtained with less than half of the hydraulic retention time. Differences in treatment on pilot vs. laboratory scale were largely due to differences in wastewater variability and reactor operation. Recommendations for future studies to reduce the costs of treatment, including emphasis on types of low-cost packing, amounts of packing media, and heating requirements are presented.

Efficient treatment of dairy processing wastewater in a pilot scale Intermittently Aerated Sequencing Batch Reactor (IASBR)

2018 ◽  
Vol 85 (3) ◽  
pp. 384-387 ◽  
Author(s):  
Peter Leonard ◽  
William Finnegan ◽  
Maria Barrett ◽  
Xinmin Zhan
Keyword(s):  
Retention Time ◽  
Sequencing Batch Reactor ◽  
High Efficiency ◽  
Batch Reactor ◽  
Pilot Scale ◽  
Laboratory Scale ◽  
Aeration Tank ◽  
Efficient Treatment ◽  
Dairy Processing ◽  
Working Volume

This Research Communication describes the initial operation of a pilot-scale intermittently aerated sequencing batch reactor system, which is located at an Irish dairy processing factory. Laboratory-scale research has facilitated the design specifications and operational parameters necessary for the construction and running of a pilot-scale. Laboratory scale research was necessary prior to the pilot scale system to ensure high quality treatment and nutrient removal efficiencies. The pilot system operates with a hydraulic retention time of 4 d, a solids retention time of 16 d and a cycle length of 12 hours. There are 4 non-aeration and aeration phases within the system's react phase. This system has a 3000 l working volume, treating 375 l of wastewater per cycle, 750 l daily. The system was seeded from an aeration tank at the dairy processing factory where the unit is located. The system is operating with the goal to remove both nitrogen and phosphorus from the wastewater biologically, reducing the need for chemical treatment. Currently, the system is performing with high efficiency, treating the wastewater to an acceptable level according to the Irish Environmental Protection Agency for discharge into surrounding water bodies. Therefore, the initial removal results demonstrate this technology's suitability for the treatment of high strength dairy wastewaters.

Performance of a pilot-scale packed bed reactor for perchlorate reduction using a sulfur oxidizing bacterial consortium

2011 ◽  
Vol 109 (3) ◽  
pp. 637-646 ◽  
Author(s):  
Amber R. Boles ◽  
Teresa Conneely ◽  
Robert McKeever ◽  
Paul Nixon ◽  
Klaus R. Nüsslein ◽  
...  
Keyword(s):  
Packed Bed ◽  
Bacterial Consortium ◽  
Pilot Scale ◽  
Packed Bed Reactor ◽  
Perchlorate Reduction ◽  
Sulfur Oxidizing

Microbial community in methanogenic packed-bed reactor successfully operating at short hydraulic retention time

2006 ◽  
Vol 101 (3) ◽  
pp. 271-273 ◽  
Author(s):  
Kengo Sasaki ◽  
Shin Haruta ◽  
Masahiro Tatara ◽  
Akira Yamazawa ◽  
Yoshiyuki Ueno ◽  
...  
Keyword(s):  
Microbial Community ◽  
Retention Time ◽  
Hydraulic Retention Time ◽  
Packed Bed ◽  
Packed Bed Reactor

scholarly journals Catalysis-in-a-Box: Robotic Screening of Catalytic Materials in the Time of COVID-19

2020 ◽  
Author(s):  
Gaurav Kumar ◽  
Hannah Bossert ◽  
Daniel McDonald ◽  
Anargyros Chatzidmitriou ◽  
M. Alexander Ardagh ◽  
...  
Keyword(s):  
Flow Reactor ◽  
Low Cost ◽  
Packed Bed ◽  
Reaction Rates ◽  
Laboratory Scale ◽  
Materials Testing ◽  
Kinetic Measurements ◽  
Flow Reactors ◽  
Activation Barriers ◽  
Micro Flow

<p></p><p>The emergence of a viral pandemic has motivated the transition away from traditional, labor-intensive materials testing techniques to new automated approaches without compromising on data quality and at costs viable for academic laboratories. Reported here is the design and implementation of an autonomous micro-flow reactor for catalyst evaluation condensing conventional laboratory-scale analogues within a single gas chromatograph (GC), enabling the control of relevant parameters including reactor temperature and reactant partial pressures directly from the GC. Inquiries into the hydrodynamic behavior, temperature control, and heat/mass transfer were sought to evaluate the efficacy of the micro-flow reactor for kinetic measurements. As a catalyst material screening example, a combination of four Brønsted acid catalyzed probe reactions, namely the dehydration of ethanol, 2-propanol, 1-butanol, and the dehydra-decyclization of 2-methyltetrahydrofuran on a solid acid HZSM-5 (Si/Al 140), were carried out in the temperature range 403-543 K for the measurement of apparent reaction kinetics. Product selectivities, proton-normalized reaction rates, and apparent activation barriers were in agreement with measurements performed on conventional packed bed flow reactors. Furthermore, the developed micro-flow reactor was demonstrated to be about ten-fold cheaper to fabricate than commercial automated laboratory-scale reactor setups and is intended to be used for kinetic investigations in vapor-phase catalytic chemistries, with the key benefits including automation, low cost, and limited experimental equipment instrumentation.</p><p></p>

scholarly journals Simultaneous Removal of Soluble Metal Species and Nitrate from Acidic and Saline Industrial Wastewater in a Pilot Scale Biofilm Reactor

2021 ◽  
Author(s):  
Panagiota Mendrinou ◽  
Artin Hatzikioseyian ◽  
Pavlina Kousi ◽  
Paschalis Oustadakis ◽  
Petros Tsakiridis ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Low Cost ◽  
Nitrate Removal ◽  
Chloride Concentration ◽  
Packed Bed ◽  
Pilot Scale ◽  
Biofilm Reactor ◽  
Metal Species ◽  
Simultaneous Removal ◽  
Treatment Unit

Abstract Α pilot scale packed-bed biofilm reactor was set up and monitored for the treatment of wastewater originating from the hydrometallurgical recovery of metals from printed circuit boards (PCBs). The wastewater is characterized by: (a) low pH, (b) residual soluble metal species and (c) elevated concentrations of nitrate and chloride originating from the use of nitric and hydrochloric acid as leaching agents. Such wastewater could be treated in a bioreactor capable for the simultaneous removal of metals and nitrates, through complete denitrification, in presence of elevated chloride concentrations. However, the possible inhibitory effects of metals as well as the metals bioprecipitation should be investigated experimentally. Biological denitrification was studied under extreme conditions in the bioreactor inoculated with Halomonas denitrificans: at (a) pH 3-8; (b) metal content (Cu, Ni, Zn and Fe) at 50 mg/L and 100 mg/L, respectively (c) nitrate concentration 750-5,750 mg/L NO3- and (d) chloride concentration 5%-10% as NaCl. According to the results, denitrification proceeds rapidly through the formation of nitrite as intermediate which is sequentially reduced completely to nitrogen. The presence of metals does not affect the denitrification process. Iron, zinc, copper and nickel are sequestered from the wastewater via bioprecipitation. Both goals, namely metals removal and complete reduction of nitrate in presence of elevated concentrations of chloride, were successfully achieved by the treatment scheme. The proposed simple, robust and low-cost biological treatment unit is advantageous compared to the conventional wastewater treatment, based on metal precipitation via chemical neutralization, where the problem of nitrate removal remains unresolved.

BIOHYDROGEN PRODUCTION FROM FERMENTATION OF SWEET SORHGUM (SORGHUM BIOCULAR L) BY INTEROBACTER AEROGENES ADH-43 IN THE PACKED-BED REACTOR

2015 ◽  
Vol 75 (6) ◽  
Author(s):  
M. A. Rachman ◽  
L.D. Eniya ◽  
E.T. Widyastuti
Keyword(s):  
Dilution Rate ◽  
Sweet Sorghum ◽  
Clean Energy ◽  
Packed Bed ◽  
Gas Production ◽  
Hydrogen Gas ◽  
Raw Material ◽  
Packed Bed Reactor ◽  
Steady State Condition ◽  
Working Volume

Hydrogen gas (H2) is one of a clean energy because its combustion produces only water vapor and heat, and leaves no carbon emissions. H2 gas is an energy future that promises both from the aspect of social, economic, or environmental.  One of potential raw material for H2 gas production is Sweet sorghum (Sorghum bicolor).  It is an annual plant native of tropical adaptive in hot and dry season.  Moreover,   it has a high biomass production , it also can adapt to extreme and sub-tropical regions.  The objective of this experimental work was to produce gas H2 using sweet sorghum at packed-bed reactor by Enterobacter aerogenes ADH-43 and to get optimum dilution rate in order to increase gas H2 production. The reactor used is a packed bed with a working volume of 450 mL and total volume of 900 mL, height 60 cm with a diameter of 4 cm. The reactor is equipped with a coat of water associated with water heating to the temperature maintained at 37 ° C ± 1 oC.   It also linked to the flask containing the Ca (OH) 2 which serves to capture the CO2 gas produced, so expect only the H2 gas.  Batch experiments were performed in the beginning, the fresh sorghum medium was fed into the reactor before two hours  of the stationary phase in order to achieve continuous culture.  The steady state condition showed that that optimum dilution rate was 0.15 h-1 with H2 gasproduction 81.50 mmol/L.h and yield 0.87 mol H2/mol total sugar.

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