The following publications cover the answer to your question:
1-BioMed Research International
Volume 2013 (2013), Article ID 134872, 11 pages
http://dx.doi.org/10.1155/2013/134872
Research Article
Treatment of Slaughter House Wastewater in a Sequencing Batch Reactor: Performance Evaluation and Biodegradation Kinetics
Pradyut Kundu, Anupam Debsarkar, and Somnath Mukherjee
Abstract
Slaughterhouse wastewater contains diluted blood, protein, fat, and suspended solids, as a result the organic and nutrient concentration in this wastewater is vary high and the residues are partially solubilized, leading to a highly contaminating effect in riverbeds and other water bodies if the same is let off untreated. The performance of a laboratory-scale Sequencing Batch Reactor (SBR) has been investigated in aerobic-anoxic sequential mode for simultaneous removal of organic carbon and nitrogen from slaughterhouse wastewater. The reactor was operated under three different variations of aerobic-anoxic sequence, namely, (4+4), (5+3), and (3+5) hr. of total react period with two different sets of influent soluble COD (SCOD) and ammonia nitrogen (-N) level mg/L, and mg/L, mg/L and mg/L, respectively. It was observed that from 86 to 95% of SCOD removal is accomplished at the end of 8.0 hr of total react period. In case of (4+4) aerobic-anoxic operating cycle, a reasonable degree of nitrification 90.12 and 74.75% corresponding to initial -N value of 96.58 and 176.85 mg/L, respectively, were achieved. The biokinetic coefficients (, , , ) were also determined for performance evaluation of SBR for scaling full-scale reactor in future operation.
2- Slaughterhouse Wastewater Treatment by Combined Chemical Coagulation and Electrocoagulation Process
Edris Bazrafshan, Ferdos Kord Mostafapour, Mehdi Farzadkia, Kamal Aldin Ownagh, Amir Hossein Mahvi
Published: June 29, 2012DOI: 10.1371/journal.pone.0040108
Abstract
Slaughterhouse wastewater contains various and high amounts of organic matter (e.g., proteins, blood, fat and lard). In order to produce an effluent suitable for stream discharge, chemical coagulation and electrocoagulation techniques have been particularly explored at the laboratory pilot scale for organic compounds removal from slaughterhouse effluent. The purpose of this work was to investigate the feasibility of treating cattle-slaughterhouse wastewater by combined chemical coagulation and electrocoagulation process to achieve the required standards. The influence of the operating variables such as coagulant dose, electrical potential and reaction time on the removal efficiencies of major pollutants was determined. The rate of removal of pollutants linearly increased with increasing doses of PACl and applied voltage. COD and BOD5 removal of more than 99% was obtained by adding 100 mg/L PACl and applied voltage 40 V. The experiments demonstrated the effectiveness of chemical and electrochemical techniques for the treatment of slaughterhouse wastewaters. Consequently, combined processes are inferred to be superior to electrocoagulation alone for the removal of both organic and inorganic compounds from cattle-slaughterhouse wastewater.
Naturgerechte Technologien, Bau- und Wirtschaftsberatung
(TBW) GmbH, Frankfurt, Germany
February 2001
Technical Field:
F Energy / Environment (E)
J Water / Sanitation (W)
F Agriculture (A)
F Foodprocessing (F)
F Manufacturing (M)
This Technical Information is
available in:
J English (e)
F French (f)
F German (g)
F Spanish (s)
F Other:
Within a series of processes, slaughterhouses produce large amounts of different
wastes and wastewaters. The problems are complex: many slaughterhouses are
ocated in the centres of the cities, traditional ways to make use of the wastes
such as application to agricultural land are not applicable because transport distances have become too long. Direct disposal of highly polluted wastewater and organic residues into the sewerage system without prior treatment on the other hand is mostly not acceptable due to resulting environmental and ecological problems and the risk of clogging in the wastewater piping systems. An estimated 20% to 30% of the slaughtering costs are generated by the costs for water, waste treatment and energy. Here, anaerobic processes can contribute in an interesting way to improve the situation.
The following publications cover the answer to your question:
1-BioMed Research International
Volume 2013 (2013), Article ID 134872, 11 pages
http://dx.doi.org/10.1155/2013/134872
Research Article
Treatment of Slaughter House Wastewater in a Sequencing Batch Reactor: Performance Evaluation and Biodegradation Kinetics
Pradyut Kundu, Anupam Debsarkar, and Somnath Mukherjee
Abstract
Slaughterhouse wastewater contains diluted blood, protein, fat, and suspended solids, as a result the organic and nutrient concentration in this wastewater is vary high and the residues are partially solubilized, leading to a highly contaminating effect in riverbeds and other water bodies if the same is let off untreated. The performance of a laboratory-scale Sequencing Batch Reactor (SBR) has been investigated in aerobic-anoxic sequential mode for simultaneous removal of organic carbon and nitrogen from slaughterhouse wastewater. The reactor was operated under three different variations of aerobic-anoxic sequence, namely, (4+4), (5+3), and (3+5) hr. of total react period with two different sets of influent soluble COD (SCOD) and ammonia nitrogen (-N) level mg/L, and mg/L, mg/L and mg/L, respectively. It was observed that from 86 to 95% of SCOD removal is accomplished at the end of 8.0 hr of total react period. In case of (4+4) aerobic-anoxic operating cycle, a reasonable degree of nitrification 90.12 and 74.75% corresponding to initial -N value of 96.58 and 176.85 mg/L, respectively, were achieved. The biokinetic coefficients (, , , ) were also determined for performance evaluation of SBR for scaling full-scale reactor in future operation.
2- Slaughterhouse Wastewater Treatment by Combined Chemical Coagulation and Electrocoagulation Process
Edris Bazrafshan, Ferdos Kord Mostafapour, Mehdi Farzadkia, Kamal Aldin Ownagh, Amir Hossein Mahvi
Published: June 29, 2012DOI: 10.1371/journal.pone.0040108
Abstract
Slaughterhouse wastewater contains various and high amounts of organic matter (e.g., proteins, blood, fat and lard). In order to produce an effluent suitable for stream discharge, chemical coagulation and electrocoagulation techniques have been particularly explored at the laboratory pilot scale for organic compounds removal from slaughterhouse effluent. The purpose of this work was to investigate the feasibility of treating cattle-slaughterhouse wastewater by combined chemical coagulation and electrocoagulation process to achieve the required standards. The influence of the operating variables such as coagulant dose, electrical potential and reaction time on the removal efficiencies of major pollutants was determined. The rate of removal of pollutants linearly increased with increasing doses of PACl and applied voltage. COD and BOD5 removal of more than 99% was obtained by adding 100 mg/L PACl and applied voltage 40 V. The experiments demonstrated the effectiveness of chemical and electrochemical techniques for the treatment of slaughterhouse wastewaters. Consequently, combined processes are inferred to be superior to electrocoagulation alone for the removal of both organic and inorganic compounds from cattle-slaughterhouse wastewater.
Naturgerechte Technologien, Bau- und Wirtschaftsberatung
(TBW) GmbH, Frankfurt, Germany
February 2001
Technical Field:
F Energy / Environment (E)
J Water / Sanitation (W)
F Agriculture (A)
F Foodprocessing (F)
F Manufacturing (M)
This Technical Information is
available in:
J English (e)
F French (f)
F German (g)
F Spanish (s)
F Other:
Within a series of processes, slaughterhouses produce large amounts of different
wastes and wastewaters. The problems are complex: many slaughterhouses are
ocated in the centres of the cities, traditional ways to make use of the wastes
such as application to agricultural land are not applicable because transport distances have become too long. Direct disposal of highly polluted wastewater and organic residues into the sewerage system without prior treatment on the other hand is mostly not acceptable due to resulting environmental and ecological problems and the risk of clogging in the wastewater piping systems. An estimated 20% to 30% of the slaughtering costs are generated by the costs for water, waste treatment and energy. Here, anaerobic processes can contribute in an interesting way to improve the situation.
Slaughterhouse wastewater can be efficiently treated biologically using aerobic and/or anaerobic processes. Due to the nature of the wastewater, high hydraulic retention time (HRT) is necessary and thus aerobic biological processes are preferable in order to minimize HRT.
Consider technologies that have the potential to treat highly organic contaminated wastewater like the vermifiltration technology and the Acti-zyme technology