Treatment of Wastewater Disposal from the General Hospital in Tuz Region Using Alum and Bentonite
The general hospital in Tuz town in Iraq suffers from the absence of a wastewater treatment plant, in which the disposals of the hospital are discharged directly into the sewerage system. The aim of this study is to use simple and basic methods for treating wastewater from the general hospital in Tu...
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| Format: | Article |
| Language: | English |
| Published: |
Erbil Polytechnic University
2019-12-01
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| Series: | Polytechnic Journal |
| Subjects: | |
| Online Access: | https://polytechnic-journal.epu.edu.iq/home/vol9/iss2/24 |
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| Summary: | The general hospital in Tuz town in Iraq suffers from the absence of a wastewater treatment plant, in
which the disposals of the hospital are discharged directly into the sewerage system. The aim of this
study is to use simple and basic methods for treating wastewater from the general hospital in Tuz Town
using bentonite clay and alum with different dosages by methods of coagulation, flocculation, and
sedimentation using Jar test, to measure the general characteristics of wastewater such as chemical
oxygen demand (COD), biochemical oxygen demand (BOD5), potential of hydrogen (PH), electrical
conductivity (EC), nitrates (NO3), phosphates (PO4), hardness, calcium (Ca), magnesium (Mg), turbidity,
chlorides (Cl), and sulfates (SO4). The results showed that bentonite clay was more effective than
alum in removing pollutants from wastewater. The removal efficient of COD and BOD5 was 65% and
57%, respectively, at the optimum dosage of bentonite clay, whereas the efficient removal of COD
and BOD5 using alum was 60% and 48%, respectively. Higher efficiency removal of turbidity was
75% for bentonite and 65% for alum; the higher value of efficiency removal was 68% for NO3 and
60% for PO4 while the higher efficiency using the treatment with alum was 58% for NO3 and 49% for
PO4. The changing in the value of pH was decreased with increasing the dosages of alum, for the first
dosage 20 mg/l, the value of PH was 7.1 then it was decreased to reach 6.2 at 120 mg/l, whereas
bentonite shows increasing in value of PH to reach 7.6 at dosage of 120 mg/l. |
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| ISSN: | 2707-7799 |