Rakbi, Mohammad Firdaus (2018) Removal Of Phosphorus And Suspended Solids In Aquaculture Wastewater By Using Ferrous Sulphate In Coagulation Process Via Zeta Potential And Particle Size Measurements. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Awam. (Submitted)
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Abstract
A study was conducted to analyse the level of water quality that is discharge from a local Arowana aquaculture farming pond system located at Simpang Empat, Semanggol, Perak along the PLUS Highway at Bukit Merah (5°01’00.3”N,100°38’15.4”E). At the aquaculture farm, the selected water quality parameter which were BOD, COD, TSS, P and E.coli of inflows and discharges were measured. Ferrous sulphate hydrate (FeSO4.7H2O) was selected as a coagulant to treat the aquaculture wastewater in the coagulation process in order to reduce the amount of pollution from the aquaculture ponds. Pollution such as suspended solids and phosphorus had been stated as one of the aquaculture industry issues by the Department of Fisheries, Malaysia which can affect the growing population of aquatic species and cost consumption of aquaculture sector. The main objective of this study was to apply the zeta potential and particle size measurements in determining the optimum pH and coagulant range to treat the aquaculture wastewater. The wastewater characteristics study result showed the value of TSS and P for discharges are 107 mg/L and 0.36 mg/L, respectively. This was subsequently followed by a pH study to determine the optimum pH by using the zeta potential and corresponding particles size with pH 2 to pH 12 for both wastewater sample and FeSO4.7H2O which were determined separately. From the result obtained, the suitable pH values to be used in coagulation process are pH 5 and pH 9. Next, the aggregation and disaggregation behaviour of the wastewater suspension was analysed as a function of a coagulant concentration. From this method, the suitable concentration of FeSO4.7H2O to be used in coagulation process was found to be 600 mg/L for pH 5 and 800 mg/L at pH 9. The last phase of the study was the jar test experiment which was carried out by using pH 5 with 600 mg/L of FeSO4.7H2O concentration and pH 9 with 800 mg/L. From the result obtained, P for pH 5 and pH 9 were 0.05 mg/L and 0.005 mg/L with percentage removal of 86.1% and 98.6%, respectively. Meanwhile, the result for TSS obtained was same for both pH 5 and pH 9 which is 2 mg/L with percentage removal of 98.1%. Hence, the best removal for P and TSS in this study was at pH 9 with 800 mg/L concentration of FeSO4.7H2O.
| Item Type: | Monograph (Project Report) |
|---|---|
| Subjects: | T Technology T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Kampus Kejuruteraan (Engineering Campus) > Pusat Pengajian Kejuruteraan Awam (School of Civil Engineering) > Monograph |
| Depositing User: | Mr Engku Shahidil Engku Ab Rahman |
| Date Deposited: | 13 Jun 2022 07:29 |
| Last Modified: | 13 Jun 2022 07:29 |
| URI: | http://eprints.usm.my/id/eprint/52852 |
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