A Review on the Stability, Sustainability, Storage and Rejuvenation of Aerobic Granular Sludge for Wastewater Treatment

Shameem, K. S.; Sabumon, P.C.

doi:10.3390/w15050950

Cited by 9 publications

(3 citation statements)

References 94 publications

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“…Aerobic systems are suitable for the treatment of low-strength wastewaters, while anaerobic systems are suitable for high-strength wastewaters. Anaerobic treatment requires less energy and has the potential for bioenergy and nutrient recovery, but aerobic treatment achieves higher removal of soluble biodegradable organic matter, resulting in lower effluent suspended solids concentration and generally higher effluent quality [5,6]. The combination of these two approaches offers the potential for enhanced treatment efficiency and improved removal of pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…The desired product can be effluent, biogas, or other products. The quality of the feed is dependent on the influent, i.e., municipal wastewater [5,7]. Thus, it is essential to review the available municipal wastewater treatment technologies in Malaysia, which can help in developing an optimized municipal wastewater treatment system for a case study plant and future plant designs.…”

Section: Introductionmentioning

confidence: 99%

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Municipal Wastewater Treatment Technologies in Malaysia: A Short Review

Kristanti

Seng

Kumar³

et al. 2023

Ind. Domest. Waste Manag.

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The aim of this study was to evaluate different municipal wastewater treatment technologies for commercial use and develop an optimized system for a case study plant and future plant designs. Municipal wastewater, classified as a low-strength waste stream, can be treated using aerobic and anaerobic reactor systems or a combination of both. Aerobic systems are suitable for low-strength wastewaters, while anaerobic systems are suitable for high-strength wastewaters. Malaysia has actively implemented various wastewater treatment technologies to address the increasing demand for clean water and reduce environmental pollution. Some commonly used technologies in Malaysia include Activated Sludge Process (ASP), Membrane Bioreactor (MBR), and Moving Bed Biofilm Reactor (MBBR). These technologies show promise in removing emerging pollutants, such as pharmaceuticals and personal care products, which are not effectively eliminated by conventional treatment methods. Additionally, Malaysia could consider investing in renewable energy sources like solar and wind to power wastewater treatment plants, thereby reducing reliance on non-renewable energy and supporting sustainable development. It is also important to emphasize continued public awareness and education initiatives to promote responsible wastewater disposal practices and environmental stewardship.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Municipal Wastewater Treatment Technologies in Malaysia: A Short Review

Kristanti

Seng

Kumar³

et al. 2023

Ind. Domest. Waste Manag.

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“…It has the characteristics of simultaneously removing organic matter, nitrogen, and phosphorus in the same particle [4]. Therefore, COD degradation, nitrogen, and phosphorus removal can be achieved simultaneously in the same reactor, but in the traditional activated sludge process, it usually needs to be carried out independently in multiple reactors [5]. Moreover, the high particle density of AGS leads to better settling performance, and the clarifier tank is also omitted in the process [6].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Simultaneous Nitrogen and Phosphorus Removal Performance of the AGS-SBR Reactor Based on the Effects of the C/N Ratio and Microbial Community Change

Su¹,

Lei

et al. 2023

Sustainability

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In recent years, the development of AGS technology will likely lead to a new direction in wastewater treatment development in the future. Traditional sewage treatment technology has been unable to meet the increasingly strict quality standards of wastewater treatment and limited land requirements. AGS technology may be a new method to replace traditional sewage treatment technology. However, the stable operation of AGS technology is a major obstacle to the popularization and development of this technology. The C/N ratio is an important parameter affecting the stability and simultaneous nitrogen and phosphorus removal of AGS technology. In order to enhance the nitrogen and phosphorus removal capacity of a low-load aerobic granular sludge SBR (AGS-SBR) system, changes in the morphology, EPS, and simultaneous removal of organic matter, nitrogen, and phosphorus in the AGS system were studied by regulating different C/N ratios (20, 15, 10, 5). The changes in the microbial community in the system were deeply analyzed by high-throughput sequencing technology. The results showed that different C/N ratios have a significant effect on the nitrogen removal rate of AGS but have little effect on the removal rate of organic matter and phosphorus. When the C/N ratio was reduced to 10, it was conducive to the stability of the low-load AGS-SBR system. An effective C/N ratio promoted the secretion of EPS by microorganisms, and the increase in the PN value contributed to the stability of the granular sludge, which became smooth and compact. The main functional genus in the system were norank_f__Saprospiraceae, Tetrasphaera, Ellin6067, and Pseudomonas. In addition, the simultaneous nitrogen removal performance of the system was significantly improved.

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