Influence of the Treatment Method on the Water Yielding Capacity of Natural Water Sediments

Nikolaenko, E V; Belkanova, M. Yu.

doi:10.1016/j.proeng.2016.07.311

Cited by 3 publications

(4 citation statements)

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“…The value of the specific resistance to filtration (r, m/kg) characterizes the sludge’s water-carrying capacity. Studies [ 18 , 24 ] have shown that the untreated sludge of Chelyabinsk WTPs has a specific resistance to filtration between 1.5 × 10 13 m/kg and 6.3 × 10 13 .…”

Section: Resultsmentioning

confidence: 99%

“…First, it has a composition similar to clay in terms of inorganic oxides (oxides of aluminium, silicon, iron). Secondly, potentially toxic elements are immobilized during heat treatment into forms that are not prone to leaching [ 17 , 18 ]. Since WTP sludge contains a significant amount of finely dispersed organic substances [ 19 ], it can be used as a burning-out additive for structural ceramics.…”

Section: Introductionmentioning

confidence: 99%

“…Recommendations for dosage of sludge in different publications differ significantly from each other. On the one hand, the authors of [ 18 ] note a general decline of ceramic materials’ characteristics with the addition of WTP sludge. Flexural strength, water absorption, linear firing shrinkage, and apparent specific mass impair.…”

Section: Introductionmentioning

confidence: 99%

“…WTP sludge is a complex multicomponent system with a high content of coagulant hydrolysis products and a highly developed surface. The humidity as a result of sludge pumping exceeds 95% [ 18 , 24 ]. Such sludge, taking into account its hydroxide nature, cannot be filtered without preliminary treatment.…”

Section: Introductionmentioning

confidence: 99%

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Structural Ceramics Modified by Water Treatment Plant Sludge

2020

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Water treatment plant (WTP) sludge is actively used in building materials production. The object of this research was modifying additives for ceramic bricks from WTP aluminium-containing sludge. The research aim of this study was to determine the suitability of a million-plus population city’s WTP sludge as a burning-out additive in the production of structural ceramics and to establish the optimal conditions for obtaining products with the best characteristics. The raw water belongs to water belongs to the hydrocarbonate class, the calcium group, and it is of low turbidity (1.5–40 mg/L kaolin). Sludge, sourced from WTP sedimentation tanks, was dewatered by adding lime or by using the freezing-thawing method. The spray-dried WTP sludge is introduced into the clay in amounts of 5% to 20% by weight. The addition of 20% reduces the sensitivity of the clay to drying, reduces the density of ceramic by 20% and simultaneously increases its compressive strength from 7.0 to 10.2 MPa. The use of WTP sludge as a modifying additive, pretreated by the freezing-thawing method, makes it possible to obtain ceramic bricks with improved properties. The results can be used for WTP sludge containing aluminium obtained by treating water of medium turbidity and medium colour.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural Ceramics Modified by Water Treatment Plant Sludge

2020

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A critical review on the occurrence of resistomes in the environment and their removal from wastewater using apposite treatment technologies: Limitations, successes and future improvement

Anthony

Ojemaye

Okoh

et al. 2020

Environmental Pollution

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The impact of the formation conditions and properties of the water treatment plants sludge on its usage in the ceramic bricks production

Орлов

Belkanova

Lymar

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Water treatment plants (WTP) sludge can be used in the construction industry. However, the composition and properties of WTP sludge are determined by the quality of water in the water source and the water treatment technology. At the same time, the technology for the manufacture of construction products requires a consistent quality of raw materials and reproducible characteristics of the finished products. In this paper, we studied the impact of a modifying add from WTP sludge on the properties of the clay composition and ceramic bricks. We used the WTP sludge formed in the fall and winter periods in the city of Chelyabinsk. The air-dry WTP sludge was introduced into the clay composition in an amount of 5-10% by mass. It is shown that the characteristics of the ceramic fragment are independent of the sludge collection season. It was found that the modifying add allows us to reduce the ceramics baking temperature by 50 °C without worsening the material baking index. The introduction of a 10% WTP sludge add helps to reduce the tendency of the air-dried brick to crack formation and accelerates the drying mode.

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Influence of the Treatment Method on the Water Yielding Capacity of Natural Water Sediments

Cited by 3 publications

References 0 publications

Structural Ceramics Modified by Water Treatment Plant Sludge

Structural Ceramics Modified by Water Treatment Plant Sludge

A critical review on the occurrence of resistomes in the environment and their removal from wastewater using apposite treatment technologies: Limitations, successes and future improvement

The impact of the formation conditions and properties of the water treatment plants sludge on its usage in the ceramic bricks production

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