Improvement of permeability of waste sludge by mixing with slag or construction and demolition waste

Asakura, Hiroshi; Endo, Kazuto; Yamada, Masato; Inoue, Yuzo; Ono, Yusaku

doi:10.1016/j.wasman.2008.12.019

Cited by 25 publications

(3 citation statements)

References 15 publications

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“…Compared to MIW, MOW had a higher permeability, a similar pore radius, and a lower tortuosity and therefore, the permeability of MOW is higher than that of MIW. One of the reasons may be the aggregation of small particles, such as ash, and the void space produced by mixing organic matter (compost) (Asakura et al, 2009). Table 3 shows the characteristic changes of the mixed samples by aeration.…”

Section: Oxygen Balance and Oxygen Consumption Rate In Aeration Testsmentioning

confidence: 99%

Influence of oxygen flow rate on reaction rate of organic matter in leachate from aerated waste layer containing mainly incineration ash

Asakura¹,

Endo

Yamada

et al. 2010

Waste Management

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Section: Oxygen Balance and Oxygen Consumption Rate In Aeration Testsmentioning

confidence: 99%

Influence of oxygen flow rate on reaction rate of organic matter in leachate from aerated waste layer containing mainly incineration ash

Asakura¹,

Endo

Yamada

et al. 2010

Waste Management

Self Cite

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“…Compared to slag and other fillers, ceramsite has better a removal of impurities and pollutants, with an increase of 8% for chemical oxygen demand (COD), 16% for ammonia nitrogen (NH 3 -N) and 25% for suspended solids (SS) from sewage [6]. Widely used in environmental protection, agriculture, horticulture, chemical industry and other fields, the application prospects of ceramsite are broad [7,8]. In addition, the use of ceramsite as a water treatment filler and microbial carrier will bring a meaningful reference to the actual production and development of sludge ceramsite [9,10].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Ceramsite Based on Waterworks Sludge and Its Application as Matrix in Constructed Wetlands

Wang

Yang

et al. 2019

IJERPH

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The recycling of waterworks sludge has become a trending issue because it not only solves the problem of difficult disposal but also saves land resources. This paper aimed to provide a new idea for the utilization of waterworks sludge to form ceramsite and to purify sewage. The specific surface area, average pore size, and pore volume of the made ceramsite were 8.15 m2/g, 8.53 nm, and 1.88 cm2/g, respectively. The made ceramsite was applied in a vertical-flow constructed wetland, and the removal efficiency of nitrogen, phosphorus and organic matter in sewage were investigated under the conditions of different start-up periods, hydraulic retention times, matrix filling heights and water quality. The removal rates of chemical oxygen demand (COD), ammonia nitrogen (NH3-N), and total phosphorus (TP) in the constructed wetlands were stable at 70%, 60%, and 79%, respectively. This constructed wetland with a ceramic matrix has certain advantages in the total amount of denitrifying microorganisms, with a proportion of 14.92%. The results prove the feasibility of preparing ceramsite from waterworks sludge and applying it as a matrix in a constructed wetland to purify sewage.

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“…gypsum, lignite, slag and construction waste, etc. [101,102], or applying thermal [103], microwave [104], ultrasonic pretreatment [105], or their combinations [106,107]. Chemical conditioning is made by adding acids or alkalis [108], surfactants [109], bio-chemical agents [110], coagulant/flocculants [111], or using electrochemical methods, etc., [112]) to change the intrinsic nature of sewage sludge and improve the dewatering performance.…”

Section: Reduction Of Moisture Content Of Sewage Sludgementioning

confidence: 99%

Thermochemical conversion of sewage sludge for energy and resource recovery: technical challenges and prospects

Zhang

et al. 2021

Environmental Pollutants and Bioavailability

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Thermochemical processes are considered as a promising technology for sewage sludge management, which could achieve volume reduction, energy and resource recovery, and effective destruction of pathogens. However, there are still many technology limitations and challenges of the thermochemical processes toward industrialization and commercialization. This review first briefly discusses the impact of sewage sludge on environmental sustainability and its current treatment and disposal methods. Typical thermochemical conversion technologies i.e., incineration/combustion, pyrolysis, gasification, and hydrothermal liquefaction for energy and resource recovery from sewage sludge are then comprehensively summarized. Subsequently, the technical challenges of thermochemical conversion of sewage sludge and the solutions that have been and/or are being developed to address the challenges are in-depth analyzed. Meanwhile, the prospects and future directions of the thermochemical technologies are outlined. In addition, the economic analysis and life cycle assessment of thermochemical conversion technologies are evaluated. Finally, the conclusions are put forward.

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Improvement of permeability of waste sludge by mixing with slag or construction and demolition waste

Cited by 25 publications

References 15 publications

Influence of oxygen flow rate on reaction rate of organic matter in leachate from aerated waste layer containing mainly incineration ash

Influence of oxygen flow rate on reaction rate of organic matter in leachate from aerated waste layer containing mainly incineration ash

Preparation of Ceramsite Based on Waterworks Sludge and Its Application as Matrix in Constructed Wetlands

Thermochemical conversion of sewage sludge for energy and resource recovery: technical challenges and prospects

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