Effect of Cell Density on the Removal of Microcystis by Coagulation
Objectives: This study evaluated the removal of Microcystis by coagulation in raw waters with three different cell densities. Method: Raw waters were prepared at three different cell densities (target cell densities of 10,000, 100,000, and 1,000,000 cell/mL; actual cell densities of 9,950, 102,00...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Korean Society of Environmental Engineers
2020-06-01
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| Series: | 대한환경공학회지 |
| Subjects: | |
| Online Access: | http://jksee.or.kr/journal/view.php?number=4267 |
| _version_ | 1811323207242743808 |
|---|---|
| author | Joo Eun Han Wontae Lee |
| author_facet | Joo Eun Han Wontae Lee |
| author_sort | Joo Eun Han |
| collection | DOAJ |
| description | Objectives:
This study evaluated the removal of Microcystis by coagulation in raw waters with three different cell densities.
Method:
Raw waters were prepared at three different cell densities (target cell densities of 10,000, 100,000, and 1,000,000 cell/mL; actual cell densities of 9,950, 102,000, and 991,000 cell/mL) by adding Microcystis into surface water from Nakdong river. Jar-tests were conducted with PACL, alum, illite, and loess at dosages of 0-150 mg/L.
Results and Discussion:
Regardless of coagulant types, the removal rates of Microcystis increased as the coagulant dosages increased. PACl and alum exhibited higher removal rates than illite and loess; PACl was the best coagulant to remove Microcystis. Removal of chlorophyll-a was highest when PACl added at 20.4 mg/L, and no significant increase in removal rate was observed with higher dosages of PACl. However, removal rates of chlorophyll-a by illite and loess gradually increased as the dosages increased.
Conclusions:
With the coagulants tested in this study, removal rates of Microcystis increased as the coagulant dosages increased. Removal rates of Microcystis increased as the cell densities increased probably because Microcystis acted as particles which could enhance the coagulation efficiency. |
| first_indexed | 2024-04-13T13:50:58Z |
| format | Article |
| id | doaj.art-4957cfcc8668457ab979e3f7f15fb1b4 |
| institution | Directory Open Access Journal |
| issn | 1225-5025 2383-7810 |
| language | English |
| last_indexed | 2024-04-13T13:50:58Z |
| publishDate | 2020-06-01 |
| publisher | Korean Society of Environmental Engineers |
| record_format | Article |
| series | 대한환경공학회지 |
| spelling | doaj.art-4957cfcc8668457ab979e3f7f15fb1b42022-12-22T02:44:20ZengKorean Society of Environmental Engineers대한환경공학회지1225-50252383-78102020-06-0142631932610.4491/KSEE.2020.42.6.319Effect of Cell Density on the Removal of Microcystis by CoagulationJoo Eun Han0https://orcid.org/0000-0001-8739-1531Wontae Lee1https://orcid.org/0000-0001-9660-4455Department of Environmental Engineering, Kumoh National Institute of TechnologyDepartment of Environmental Engineering, Kumoh National Institute of TechnologyObjectives: This study evaluated the removal of Microcystis by coagulation in raw waters with three different cell densities. Method: Raw waters were prepared at three different cell densities (target cell densities of 10,000, 100,000, and 1,000,000 cell/mL; actual cell densities of 9,950, 102,000, and 991,000 cell/mL) by adding Microcystis into surface water from Nakdong river. Jar-tests were conducted with PACL, alum, illite, and loess at dosages of 0-150 mg/L. Results and Discussion: Regardless of coagulant types, the removal rates of Microcystis increased as the coagulant dosages increased. PACl and alum exhibited higher removal rates than illite and loess; PACl was the best coagulant to remove Microcystis. Removal of chlorophyll-a was highest when PACl added at 20.4 mg/L, and no significant increase in removal rate was observed with higher dosages of PACl. However, removal rates of chlorophyll-a by illite and loess gradually increased as the dosages increased. Conclusions: With the coagulants tested in this study, removal rates of Microcystis increased as the coagulant dosages increased. Removal rates of Microcystis increased as the cell densities increased probably because Microcystis acted as particles which could enhance the coagulation efficiency.http://jksee.or.kr/journal/view.php?number=4267cyanobacteriaalgal bloommicrocystiscoagulationcell density |
| spellingShingle | Joo Eun Han Wontae Lee Effect of Cell Density on the Removal of Microcystis by Coagulation 대한환경공학회지 cyanobacteria algal bloom microcystis coagulation cell density |
| title | Effect of Cell Density on the Removal of Microcystis by Coagulation |
| title_full | Effect of Cell Density on the Removal of Microcystis by Coagulation |
| title_fullStr | Effect of Cell Density on the Removal of Microcystis by Coagulation |
| title_full_unstemmed | Effect of Cell Density on the Removal of Microcystis by Coagulation |
| title_short | Effect of Cell Density on the Removal of Microcystis by Coagulation |
| title_sort | effect of cell density on the removal of microcystis by coagulation |
| topic | cyanobacteria algal bloom microcystis coagulation cell density |
| url | http://jksee.or.kr/journal/view.php?number=4267 |
| work_keys_str_mv | AT jooeunhan effectofcelldensityontheremovalofmicrocystisbycoagulation AT wontaelee effectofcelldensityontheremovalofmicrocystisbycoagulation |