Comparisons Study of Phosphate Removal in Unaerated and Aerated High Calcium Steel Slag Filter System of Different pH Feed

Ahmad, Siti Zu Nurain; Hamdan, Rafidah; Mohamed, Wan Afnizan Wan; Othman, Norzila; Zin, Nur Shaylinda Mohd; Musa, Sabariah

doi:10.1051/matecconf/201710306018

Cited by 11 publications

(13 citation statements)

References 13 publications

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“…Removals of phosphorus are closely related to the pH of the water. The removals of phosphorus are likely to occur in high pH wastewater when the Ca rich steel slag was used as the filter media [12]. Figure 3 shows the experimental results for the pH of the textile wastewater.…”

Section: Resultsmentioning

confidence: 99%

Phosphorus Removal from Textile Industrial Wastewater using Aerated High Calcium Steel Slag Filter System

Arshad*,

Hamdan*,

Ahmad

2019

IJRTE

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Phosphorus in wastewater accelerates eutrophication in water body. Textile wastewater is one of contributors to the phosphorus loading into water body which promotes the growth of algae, reducing the oxygen content and detrimental to surface water ecosystem. Myriad existing treatments for phosphorus removal have been developed but it requires a high cost treatment and maintenance. Rock filter system emerged as one of the alternative method for phosphorus removal from wastewater with steel slag as the filter media. However, application of the system in treating industrial wastewater is still unclear especially in big scale application and requires extensive study. This study is done to provide solution of phosphorus loading from textile wastewater using steel slag as filter material and to investigate the removal capacity of steel slag with high calcium and low ferum content. The steel slag was analyzed using XRF for its composition and to ensure the steel slag has high Ca content. Then, the aerated steel slag filter system was set-up on the site of textile industry for a month and analyzed according to parameter of pH, alkalinity, COD, DO, temperature and TSS. The result from this study showed that the aerated high calcium low ferum steel slag filter has a high efficiency of phosphorus removal rates varied from 35% to 67% in treating textile wastewater. It was found that aerated steel slag system was efficient in phosphorus removal by using industrial wastewater

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Section: Resultsmentioning

confidence: 99%

Phosphorus Removal from Textile Industrial Wastewater using Aerated High Calcium Steel Slag Filter System

Arshad*,

Hamdan*,

Ahmad

2019

IJRTE

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“…Apart from this, the aeration was not introduced in the USSF, making it able to remove phosphorus better than ASSF due to undisturbed condition from aeration. The vibration from the aeration bubble provides disturbance to the adsorption where the vibration ensures that the matter is released from its attached surface [29]. Aside from that, the removal efficiency for ASSF and USSF filters were compared with ACF that was installed in the existing treatment, as illustrated in Fig.…”

Section: Discussionmentioning

confidence: 99%

Study of Steel Slag Filter Unit as a Secondary Treatment System for Removing Total Phosphorus from Textile Industry Wastewater

Arshad

Hamdan

2021

IJIE

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Eutrophication is one of the global concerned due to algae bloom in the natural surface water such as lakes and swamp area. Industrial effluent with incomplete treatment discharged has become one of the main culprits to this phenomenon. Approximately, 0.3 – 13 mg/L of total phosphorus can be found in the final discharge of industrial effluent showing that the existing treatment including an activated carbon filter (ACF) has limitation in polishing the phosphorus. Therefore, this 16 week of study has been designed to study the alternative treatment phosphorus removal at secondary stage to replace the tertiary treatment by using steel manufacturing by-product as filter media for effective phosphorus removal from the textile industry wastewater. Two units of lab-scale vertical steel slag filter (SSF) systems under aerated and unaerated conditions have been developed for this study. The samples were collected and analysed biweekly for selected parameters including pH, alkalinity, DO and TP. The results obtained from this study show that the unaerated steel slag filter has a high efficiency of TP removal which ranged from 46% to 70% compared to the aerated SSF with removal efficiency ranged from 37% to 66%. Besides, the existing ACF removal efficiency was ranged from 36% to 54%. Thus, the use of steel slag in removing phosphorus from textile wastewater is possible with the used of both aerated and unaerated steel slag filter systems. Furthermore, the removal mechanism involved was likely to be precipitation and adsorption.

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“…pH value has a significant effect on the removal of phosphorus. Generally, adsorption will occur at a low pH while calcium will precipitate during the removal of phosphorus at a high pH (Ahmad et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

The Physical and Chemical Characteristic of Recycled Concrete Aggregate for Removal Phosphorus as a Filter System

Roni

Adnan

Hamidon

et al. 2021

JAITA

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The removal of phosphorus from wastewater is a common procedure. Improving water quality is the aim of wastewater treatment. There are many types of conventional methods that have been used for the removal of phosphorus. Phosphorus reaction with chemicals can be removed immediately from water. However, the use of chemicals often increases the cost of wastewater treatment. This study aims to investigate the physical and chemical characteristics of RCA that influence the removal of phosphorus, as well as the percentage of phosphorus removal using RCA of two different sizes namely, 5 mm to 10 mm and 25 mm to 30 mm. The samples taken from the influent and effluent filters were tested and analysed in terms of the uptake capacity of phosphorus (q) and the percentage of phosphorus removal (%). The highest percentage of phosphorus removal achieved was 99.54% in the initial concentration of 10 mg/L by RCA measuring between 5 mm to 10 mm while the lowest percentage of phosphorus removal was 66.25% in the initial concentration of 50 mg/L for RCAs measuring between 25 mm to 30 mm. Furthermore, RCA achieved the highest uptake capacity (q) of 3.45 mg/L in the initial wastewater concentration of 50 mg/L. In conclusion, RCA has the potential to remove phosphorus, particularly in low concentrations of synthetic wastewater and high pH conditions.

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Comparisons Study of Phosphate Removal in Unaerated and Aerated High Calcium Steel Slag Filter System of Different pH Feed

Cited by 11 publications

References 13 publications

Phosphorus Removal from Textile Industrial Wastewater using Aerated High Calcium Steel Slag Filter System

Phosphorus Removal from Textile Industrial Wastewater using Aerated High Calcium Steel Slag Filter System

Study of Steel Slag Filter Unit as a Secondary Treatment System for Removing Total Phosphorus from Textile Industry Wastewater

The Physical and Chemical Characteristic of Recycled Concrete Aggregate for Removal Phosphorus as a Filter System

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