The Effect of Contact Time and Ozon Dose to Polutants Reduction in Hospital Wastewater
In Indonesia, Hospital wastewater treatment generally use biological process followed by chlorination process. Chlorination process has a negative impact on the aquatic environment that is cause death of other microorganisms by the residual chlorine. On the other hand, ozone is more effective than c...
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| Format: | Article |
| Language: | English |
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Universitas Negeri Semarang
2018-06-01
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| Series: | Jurnal Bahan Alam Terbarukan |
| Subjects: | |
| Online Access: | https://journal.unnes.ac.id/nju/index.php/jbat/article/view/11401 |
| _version_ | 1818172255308349440 |
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| author | Prayitno Prayitno Hadi Saroso Hardjono Hardjono Sri Rulianah |
| author_facet | Prayitno Prayitno Hadi Saroso Hardjono Hardjono Sri Rulianah |
| author_sort | Prayitno Prayitno |
| collection | DOAJ |
| description | In Indonesia, Hospital wastewater treatment generally use biological process followed by chlorination process. Chlorination process has a negative impact on the aquatic environment that is cause death of other microorganisms by the residual chlorine. On the other hand, ozone is more effective than chlorine in killing microorganisms and other pollutants in hospital wastewater. The objective of research is to determine the effect of contact time and dose of ozone to reduction of pollutants (BOD, COD, free Ammonia and Phenol) in hospital wastewater. The experiment was carried out using an ozone reactor containing 'packing', an ozone generator as an ozone gas supplier. The experimental material is a hospital wastewater containing BOD, COD, Phenol and Ammonia free. The experimental variables used were: Contact time (1, 2, and 3 min), Dose of ozone (10, 15, and 20 mg/ L). Experiments were done by flowing hospital waste water at the top of the reactor ozone at certain rate and simultaneously flowed ozone gas from an ozone generator in the bottom of the ozone reactor so that it contacts the fluid in counter-current to the surface of the packing material (packing) in an ozone reactor. By adjusting the flowrate of the wastewater and the height of the packing, it can be determined the amount of contact time and ozone dose. Furthermore, by measuring the amount of pollutant concentration on the influent and effluent of the ozone reactor, it can be obtained the amount of removal in the pollutant concentration of the hospital wastewater.
The results showed that contact time and ozone dose influence the decrease of pollutant concentration in hospital wastewater where contact time at 3 minutes and ozone dose 20 mg/L and ozonation time 15 minutes can reduce of pollutants concentration as BOD (97%), COD (98%), Ammonia free (97%), and Phenol (96%). |
| first_indexed | 2024-12-11T19:09:42Z |
| format | Article |
| id | doaj.art-04ee26f417c2458a84edb94b9cfbd230 |
| institution | Directory Open Access Journal |
| issn | 2303-0623 |
| language | English |
| last_indexed | 2024-12-11T19:09:42Z |
| publishDate | 2018-06-01 |
| publisher | Universitas Negeri Semarang |
| record_format | Article |
| series | Jurnal Bahan Alam Terbarukan |
| spelling | doaj.art-04ee26f417c2458a84edb94b9cfbd2302022-12-22T00:53:48ZengUniversitas Negeri SemarangJurnal Bahan Alam Terbarukan2303-06232018-06-0171414710.15294/jbat.v7i1.11401The Effect of Contact Time and Ozon Dose to Polutants Reduction in Hospital WastewaterPrayitno Prayitno0Hadi Saroso1Hardjono Hardjono2Sri Rulianah3Chemical Engineering Department, State Polytechnic of MalangChemical Engineering Department, State Polytechnic of MalangChemical Engineering Department, State Polytechnic of MalangChemical Engineering Department, State Polytechnic of MalangIn Indonesia, Hospital wastewater treatment generally use biological process followed by chlorination process. Chlorination process has a negative impact on the aquatic environment that is cause death of other microorganisms by the residual chlorine. On the other hand, ozone is more effective than chlorine in killing microorganisms and other pollutants in hospital wastewater. The objective of research is to determine the effect of contact time and dose of ozone to reduction of pollutants (BOD, COD, free Ammonia and Phenol) in hospital wastewater. The experiment was carried out using an ozone reactor containing 'packing', an ozone generator as an ozone gas supplier. The experimental material is a hospital wastewater containing BOD, COD, Phenol and Ammonia free. The experimental variables used were: Contact time (1, 2, and 3 min), Dose of ozone (10, 15, and 20 mg/ L). Experiments were done by flowing hospital waste water at the top of the reactor ozone at certain rate and simultaneously flowed ozone gas from an ozone generator in the bottom of the ozone reactor so that it contacts the fluid in counter-current to the surface of the packing material (packing) in an ozone reactor. By adjusting the flowrate of the wastewater and the height of the packing, it can be determined the amount of contact time and ozone dose. Furthermore, by measuring the amount of pollutant concentration on the influent and effluent of the ozone reactor, it can be obtained the amount of removal in the pollutant concentration of the hospital wastewater. The results showed that contact time and ozone dose influence the decrease of pollutant concentration in hospital wastewater where contact time at 3 minutes and ozone dose 20 mg/L and ozonation time 15 minutes can reduce of pollutants concentration as BOD (97%), COD (98%), Ammonia free (97%), and Phenol (96%).https://journal.unnes.ac.id/nju/index.php/jbat/article/view/11401contact timecountercurrent; dosehospital wastewaterozonepacking |
| spellingShingle | Prayitno Prayitno Hadi Saroso Hardjono Hardjono Sri Rulianah The Effect of Contact Time and Ozon Dose to Polutants Reduction in Hospital Wastewater Jurnal Bahan Alam Terbarukan contact time countercurrent; dose hospital wastewater ozone packing |
| title | The Effect of Contact Time and Ozon Dose to Polutants Reduction in Hospital Wastewater |
| title_full | The Effect of Contact Time and Ozon Dose to Polutants Reduction in Hospital Wastewater |
| title_fullStr | The Effect of Contact Time and Ozon Dose to Polutants Reduction in Hospital Wastewater |
| title_full_unstemmed | The Effect of Contact Time and Ozon Dose to Polutants Reduction in Hospital Wastewater |
| title_short | The Effect of Contact Time and Ozon Dose to Polutants Reduction in Hospital Wastewater |
| title_sort | effect of contact time and ozon dose to polutants reduction in hospital wastewater |
| topic | contact time countercurrent; dose hospital wastewater ozone packing |
| url | https://journal.unnes.ac.id/nju/index.php/jbat/article/view/11401 |
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