Hydrocyclones for the separation of impurities in pretreated biowaste

Jank, Anna; Müller, Wolfgang; Waldhuber, Sebastian; Gerke, Frédéric; Ebner, Christian; Bockreis, Anke

doi:10.1016/j.wasman.2017.03.001

Cited by 20 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the purposes of this analysis, it was assumed that all collected waste would be recycled, which means that the capture and recycling rate have the same value. This is a simplification, due to the fact some of the biowaste will not be suitable for further use due to impurity content and improper collection conditions, among other things [58,59].…”

Section: Biowaste Separate Collection Scenariosmentioning

confidence: 99%

The Circular Economy and Organic Fraction of Municipal Solid Waste Recycling Strategies

2020

View full text Add to dashboard Cite

Densely populated areas with large incoming populations have difficulty achieving high separate collection rates of municipal solid waste. The manuscript analyzes the link between biowaste collection and circular economy requirements as a fulfilment of the recycling rates and using biogas as a sustainable energy source. Three biowaste collection scenarios and three technical scenarios for its treatment are considered. The first scenario assumes only composting for biowaste treatment, the next includes also anaerobic digestion. In the years 2020–2050, the separate biowaste collection level will increase, depending on the scenario, from 26.9 kg/inh. up to 148.1kg/inh. By 2030, the quantity of biogas generated from biowaste can grow to almost 9 million m3/year, enabling the production of renewable energy at annual levels of almost 17 GWh and 69 TJ. Using the third scenario, the quantity of biogas generated grows more than twice (in 2035). If the capture rate of biowaste increases from 15% to 20% and then to 25%, the quantity of biogas generated grows by, respectively, 65% and more than 100%. Unfortunately, none of the scenarios enables the required municipal solid waste recycling rates in 2030 (60%) and 2035 (65%), which demonstrates the significant need to develop more effective separate collection systems, including biowaste. Methodology applied in the paper can be used for other cities and regions trying to meet circular economy demands.

show abstract

Section: Biowaste Separate Collection Scenariosmentioning

confidence: 99%

The Circular Economy and Organic Fraction of Municipal Solid Waste Recycling Strategies

2020

View full text Add to dashboard Cite

show abstract

“…However, the removal efficiency was still low. Therefore, the cyclone was generally used in pretreatment [63].…”

Section: Cyclone Classificationmentioning

confidence: 99%

The Impurity Removal and Comprehensive Utilization of Phosphogypsum: A Review

Guan,

Wang,

Zhou

et al. 2024

Materials

View full text Add to dashboard Cite

Phosphogypsum (PG), a byproduct during the phosphoric acid production process, also known as the wet process, contains complex and diverse impurities, resulting in low utilization and considerable accumulation. This leads to a massive waste of land resources and a series of environmental pollution problems. Given the current urgent ecological and environmental situation, developing impurity removal processes with low energy consumption and high efficiency, exploring valuable resource recovery, preparing high value-added PG products, and broadening the comprehensive utilization ways of PG are significant strategies to promote the sustainable consumption of PG and sustainable development of the phosphorus chemical industry. This review comprehensively summarizes the advantages and disadvantages of existing PG impurity removal and utilization technologies and probes into the future development direction, which provides references and ideas for subsequent PG research.

show abstract

“…In terms of the structural forms of the hydrocyclone, Jank et al [24] proposed a large-diameter hydrocyclone for the pretreatment of sewage waste, separating impurities like sand and glass. Kyriakidis et al [25] studied the micro-hydrocyclone group for separating fine particles in the wastewater, which significantly reduced the content of fine particles.…”

Section: Introductionmentioning

confidence: 99%

Sediment-Containing Sewage Separation Using Intermittent-Discharge Columnar Hydrocyclones

Zhang

Yang

Liu

2020

Water

View full text Add to dashboard Cite

Traditional hydrocyclones can be used for the concentration of sewage-containing sediments, but the low underflow concentration and the high content of fine particles result in a large subsequent dehydration workload. This study aimed to investigate the effect of columnar hydrocyclone column height on separation performance and the change in the internal flow field after the underflow orifice of the hydrocyclone was closed, so as to provide a theoretical basis for improving the ability to treat the sewage of the hydrocyclone. Numerical simulation was used to examine the change in the separation performance of the hydrocyclone and the effect of column height on the separation performance of the hydrocyclone in the case of the closed underflow orifice during intermittent discharging. The results indicate that a proper increase in column height was beneficial to improve the separation performance of the hydrocyclone. With the increase in the closing time of the underflow orifice, the particle content at the bottom of the hydrocyclone increased significantly. The experiment proves the feasibility of the intermittent discharge method in practice, and this working method can effectively increase the underflow concentration.

show abstract

Hydrocyclones for the separation of impurities in pretreated biowaste

Cited by 20 publications

References 31 publications

The Circular Economy and Organic Fraction of Municipal Solid Waste Recycling Strategies

The Circular Economy and Organic Fraction of Municipal Solid Waste Recycling Strategies

The Impurity Removal and Comprehensive Utilization of Phosphogypsum: A Review

Sediment-Containing Sewage Separation Using Intermittent-Discharge Columnar Hydrocyclones

Contact Info

Product

Resources

About