Investigating the feasibility of removing the rapid mixing unit in conventional surface water treatment and its effect on turbidity removal
Coagulation and flocculation processes play a major role in surface water treatment. The aim of this study was to eliminate the rapid mixing unit in the water treatment plant. This experimental study was conducted on turbid water. Turbid water was synthesized by kaolin powder. The conventional jar t...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2021-10-01
|
| Series: | Water Practice and Technology |
| Subjects: | |
| Online Access: | http://wpt.iwaponline.com/content/16/4/1173 |
| _version_ | 1818742151071137792 |
|---|---|
| author | Abolfazl Hessam Mohammad Hadi Mehdinejad |
| author_facet | Abolfazl Hessam Mohammad Hadi Mehdinejad |
| author_sort | Abolfazl Hessam |
| collection | DOAJ |
| description | Coagulation and flocculation processes play a major role in surface water treatment. The aim of this study was to eliminate the rapid mixing unit in the water treatment plant. This experimental study was conducted on turbid water. Turbid water was synthesized by kaolin powder. The conventional jar test method was used. The flocculation and sedimentation processes were performed on the turbid water without a rapid mixing unit for getting the new optimal condition. When the PACl coagulant was used alone and in conjunction with chitosan, the percentages of turbidity removal in low, medium and high turbidities were obtained as 86.7%, 95.8%, 97.8% and 86.67%, 95.73%, 98.26%, respectively. When the rapid mixing unit was emitted, the efficiency of turbidity removal in the low turbidity was reduced from 5.26% to 21.73%. But, in higher turbidity in two states (presence and absence of the rapid mixing units) it did not have a significant difference. This study showed that the removal of the rapid mix unit on the removal efficiency of turbidity in the low turbidity is effective, but does not have an effect on higher turbid water. Also, using PACl in conjunction with chitosan was effective in the removal efficiency and to reduce residual aluminum. HIGHLIGHTS
To decrease the cost of water treatment.;
Changing the process related to coagulation and flocculation stages.;
To decrease the time and the consumed coagulant.;
To increase efficiency of turbidity removal.;
Simplicity of process.; |
| first_indexed | 2024-12-18T02:07:57Z |
| format | Article |
| id | doaj.art-46bc55a25f22415697231cfea2880426 |
| institution | Directory Open Access Journal |
| issn | 1751-231X |
| language | English |
| last_indexed | 2024-12-18T02:07:57Z |
| publishDate | 2021-10-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Practice and Technology |
| spelling | doaj.art-46bc55a25f22415697231cfea28804262022-12-21T21:24:33ZengIWA PublishingWater Practice and Technology1751-231X2021-10-011641173118110.2166/wpt.2021.070070Investigating the feasibility of removing the rapid mixing unit in conventional surface water treatment and its effect on turbidity removalAbolfazl Hessam0Mohammad Hadi Mehdinejad1 Environmental Health Research Centre, Faculty of Health, Golestan University of Medical Sciences, Gorgan, Iran Environmental Health Research Centre, Faculty of Health, Golestan University of Medical Sciences, Gorgan, Iran Coagulation and flocculation processes play a major role in surface water treatment. The aim of this study was to eliminate the rapid mixing unit in the water treatment plant. This experimental study was conducted on turbid water. Turbid water was synthesized by kaolin powder. The conventional jar test method was used. The flocculation and sedimentation processes were performed on the turbid water without a rapid mixing unit for getting the new optimal condition. When the PACl coagulant was used alone and in conjunction with chitosan, the percentages of turbidity removal in low, medium and high turbidities were obtained as 86.7%, 95.8%, 97.8% and 86.67%, 95.73%, 98.26%, respectively. When the rapid mixing unit was emitted, the efficiency of turbidity removal in the low turbidity was reduced from 5.26% to 21.73%. But, in higher turbidity in two states (presence and absence of the rapid mixing units) it did not have a significant difference. This study showed that the removal of the rapid mix unit on the removal efficiency of turbidity in the low turbidity is effective, but does not have an effect on higher turbid water. Also, using PACl in conjunction with chitosan was effective in the removal efficiency and to reduce residual aluminum. HIGHLIGHTS To decrease the cost of water treatment.; Changing the process related to coagulation and flocculation stages.; To decrease the time and the consumed coagulant.; To increase efficiency of turbidity removal.; Simplicity of process.;http://wpt.iwaponline.com/content/16/4/1173coagulationcoagulantsjar testrapid mix unitturbidity |
| spellingShingle | Abolfazl Hessam Mohammad Hadi Mehdinejad Investigating the feasibility of removing the rapid mixing unit in conventional surface water treatment and its effect on turbidity removal Water Practice and Technology coagulation coagulants jar test rapid mix unit turbidity |
| title | Investigating the feasibility of removing the rapid mixing unit in conventional surface water treatment and its effect on turbidity removal |
| title_full | Investigating the feasibility of removing the rapid mixing unit in conventional surface water treatment and its effect on turbidity removal |
| title_fullStr | Investigating the feasibility of removing the rapid mixing unit in conventional surface water treatment and its effect on turbidity removal |
| title_full_unstemmed | Investigating the feasibility of removing the rapid mixing unit in conventional surface water treatment and its effect on turbidity removal |
| title_short | Investigating the feasibility of removing the rapid mixing unit in conventional surface water treatment and its effect on turbidity removal |
| title_sort | investigating the feasibility of removing the rapid mixing unit in conventional surface water treatment and its effect on turbidity removal |
| topic | coagulation coagulants jar test rapid mix unit turbidity |
| url | http://wpt.iwaponline.com/content/16/4/1173 |
| work_keys_str_mv | AT abolfazlhessam investigatingthefeasibilityofremovingtherapidmixingunitinconventionalsurfacewatertreatmentanditseffectonturbidityremoval AT mohammadhadimehdinejad investigatingthefeasibilityofremovingtherapidmixingunitinconventionalsurfacewatertreatmentanditseffectonturbidityremoval |