BASIC THESIS

PHOSPHORUS RECOVERY FROM UTILIZING AEROBIC GRANULAR BIOMASS IN WASTEWATER TREATMENT

A Technological Assessment of Suitable Phosphorus Recovery Technology in Morecambe WWTW

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Student: CALEB, EGHOBAMIEN ELOGHOSA Supervisor: ABDEL-AAL, MOHAMAD

Date: 13th May, 2022

Index

vii. Conclusion

iv. Methodology

i. Introduction

viii. Recommendation

ii. Aim / Objectives

v. Results

ix. Thanks

vi. Discussion

iii. Scope of Study

.01

Introduction

RESOURCE RECOVERY

The water resource reclamation industry is rapidly transitioning towards embracing the resource recovery paradigm, whereby resources within wastewater and infrastructure at water resource reclamation facilities (WRRFs) are beneficially exploited for constructive use. Biological treatment for carbon and nutrient control is expected to remain a core process for WRRFs of the future.

Source:Khunjar et al., 2017

.02

Aim/Objectives

Aim

• Explore the selection and application of available technology for phosphorus recovery in case study wastewater treatment plant utilizing aerobic granular biomass (Nereda Technology).

Objectives

• Investigate the suitable technology for phosphorus recovery in relation to case study
• Critically evaluate the feasibility and economic implication of phosphorus recovery in Morecambe WWTW
• Evaluate market supply potential of extracted phosphorus
• Suggest improvement techniques to enhance phosphorus recovery

.03

Scope of Study

STUDY/CASE STUDY DATA

The data for this study (both literature review and overall) was from secondary data sources, including books, peer-reviewed journals on available technology, technology developers' websites, project briefs, articles and project reports on recovery plants. Validation of all materials in accordance with scientific and academic standards was performed to ensure source credibility.

.04

Methodology

Research Based Study

• Secondary Data
• Case Study
• Technological Assessment

• The research design and recommendations were based on united utilities Morecambe wastewater treatment works. Morecambe is a town in Lancashire, England, two miles northeast of the town of Heysham. The wastewater treatment effluent is discharged into Morecambe Bay via sea outfall pipes (Ramond et al., 2019).

.05

Methodology

Multi-Criteria Analysis for P-Recovery Technologies

COST OPTIMIZATION/REDUCTIONCRITERIA

INFORMATION/OPTIMUM RECOMMENDATION CRITERIA

INITIAL SELECTION CRITERION

Group-Based Assessment

Individual-Based Assessment

1. Availability of data
2. Detailed material flow model
3. Full-scale applications

1. Compactibility with Nerada
2. Influent type

1. Final product treatment
2. Phosphorus recovery %
3. Use of multiple Chemicals

.06

Results

SELECTED PHOSPHORUS RECOVERY TECHNOLOGIES BASED ON INITIAL SELECTION CRITERION

Results

.07

RESULT OF INDIVIDUAL BASED ASSESSMENT

ANPHOS and PHOSPAQ have the highest percentage satisfaction against the listed criteria with a total individual assessment score of 8 each.

AirPrex and P-Roc are the worst-performing technologies satisfying just 5 out of the 8 listed individual assessment criteria.

INFO

.08

Results

Results

.09

RESULT OF GROUP BASED ASSESSMENT

ANPHOS and PHOSPAQ are topping the graph chart across all three categories. AirPrex under this category was most unfavourable as this technology did not satisfy any condition under group c (cost optimization and reduction).

Results

.10

COMPARATIVE ASSESSMENT

Both technologies have the potential for effective operation having satisfied all outlined criteria. The installation point of the ANPHOS recovery unit however is in-between the anaerobic and aerobic treatment points (Desmidt et al., 2015 and Kabbe, 2017). In the treatment plant at Morecambe, Nereda reactors combine both anaerobic and aerobic activities in a singular tank hence the application of ANPHOS at this Morecambe plant is unlikely.

Results

.11

APPLICATION OF PHOSPAQ AT MORECAMBE WWTW

PHOPAQ

.12

Discussion

Phosphorus Recovery using PHOSPAQ at Morecambe WWTW

PHOSPAQ technology has the potential to be economically viable when evaluating possible reductions which includes reduced P back-flow (lower requirement for flocking agents), avoidance extra process and related maintenance expenses, and income from the manufactured manure.

• > 50 tons/per struvite suitable as fertilizer.
• Less Sludge Production
• Enhanced struvite precipitation with free BOD and sulphide removal

.13

Conclusion

• PHOSPAQ technology can be used to efficiently recover phosphorus.
• P-recovery as struvite, like in the instance of PHOSPAQ, lowers overall OPEX expenses by 2-8 percent sludge reduction.
• PHOSPAQ technology application is the reduced operation and investment cost when compared to other technologies that utilize wet-chemical and thermal processes.
• Application of PHOSPAQ at Morecambe offer at worse performance a cost-neutral investment with a potential 41.5mg. P/L phosphorus recovery as struvite.

.14

Recommendation

• Collaboration with industry professionals to foster more industry-based result-oriented analysis.
• Overall resource recovery is a possible area for additional improvement as more strict rules for response to environmental issues continue to grow.
• Nutrient build-up approaches can be used in AGS systems to help p-recovery technologies work optimally during low concentration times, increasing treatment efficiency.
• Another potential research area is the application of P-recovery technologies on both small and large scale treatment systems, as a combination of the two provides a source of non-renewable resource generation.

Thanks for your attention

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