About the Possibility of Recycling Water Treatment Sludge in the Wood–Cement Composites Production

2020 ◽  
Vol 299 ◽  
pp. 305-310
Author(s):  
Zh.A. Sapronova ◽  
S.V. Sverguzova ◽  
A.V. Svyatchenko
Keyword(s):  
Compressive Strength ◽  
Water Treatment ◽  
Water Absorption ◽  
Average Density ◽  
Cement Composites ◽  
Water Treatment Sludge ◽  
Regulatory Requirements ◽  
Sorption Material ◽  
Industrial Machine ◽  
Wood Cement Composites

The paper presents the results of a study of the possibility of recycling water treatment sludge in the production of wood-cement composites. Sludge is formed during the treatment of sewage, containing industrial machine oil, with a sorption material, based on thermally modified chestnut tree waste (CTW). It was found that the addition of sludge leads to an increase in the density of the samples. Thus, the samples without the addition of sludge have an average density of 860 kg/m3, samples with the addition of sludge in an amount of 10 mass% - 875 kg/m3, 20 mass% - 879 kg/m3, 30 mass% - 882 kg/m3, 42 mass % - 887 kg/m3. Studies of the change in water absorption of samples, depending on the amount of sludge added, showed that the values slightly decrease for samples containing sludge, what is explained by the presence of oil in the mixture. The compressive strength of the samples with the addition of sludge in the amount of 42 mass% was 3.1 MPa, what corresponds to the regulatory requirements for a wood cement composites.

PROPERTIES AND PERFORMANCE OF WATER TREATMENT SLUDGE (WTS)-CLAY BRICKS

2015 ◽  
Vol 77 (32) ◽  
Author(s):  
Mohd Asri Md Nor ◽  
Alia Syafiqah Abdul Hamed ◽  
Faisal Hj Ali ◽  
Ong Keat Khim
Keyword(s):  
Compressive Strength ◽  
Water Treatment ◽  
Water Absorption ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Treatment Sludge ◽  
X Ray ◽  
Clay Bricks ◽  
Firing Shrinkage ◽  
And Performance

Every year, large quantity of water treatment sludge (WTS) is produced from water treatment plant in Malaysia. Sanitary landfill disposal of sludge at authorized sites is the common practice in Malaysia. However, searching the suitable site for landfill is the major problem as the amount of sludge produced keeps on increasing. Reuse of the sludge could be an alternative to disposal. This study investigated the reusability of WTS as brick making material. The performance of clay-WTS bricks produced by mixing clay with different percentages of WTS with increments of 20% from 0% up to 100% was investigated. Each molded brick with optimum moisture content was pressed under constant pressure, oven-dried at 100˚C for 24 hours followed by heating at 600˚C for 2 hours and 1000˚C for 3 hours. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray (EDX) analysis were used to characterize clay, WTS and clay-WTS bricks.  The performance of the bricks were evaluated with firing shrinkage, loss on ignition (LOI), water absorption, bulk density, and compressive strength tests. Increasing the sludge content results in a decrease of brick firing shrinkage, and increase of water absorption and compressive strength. The results revealed that the brick with 100% by weight of sludge could generate the highest compressive strength of 17.123N/mm2. It can be concluded that the bricks with 20 to 100% of water treatment sludge comply with the Malaysian Standard MS7.6:1972, which can fulfill the general requirement for usage of clay bricks in wall construction.

Reuse of water treatment plant sludge and dam sediment in brick-making

2001 ◽  
Vol 44 (10) ◽  
pp. 273-277 ◽  
Author(s):  
C. Huang ◽  
J.R. Pan ◽  
K.-D. Sun ◽  
C.-T. Liaw
Keyword(s):  
Compressive Strength ◽  
Water Treatment ◽  
Water Absorption ◽  
Satisfactory Result ◽  
Raw Materials ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
National Standard ◽  
Sintering Process ◽  
Water Treatment Plant Sludge

In this study, an attempt was made to use water treatment plant (WTP) sludge and dam sediment as raw materials for brick-making through the sintering process. The sinter of dam sediment fired at 1,050°C had a less than 15% ratio water absorption, and its compressive strength and bulk density met the Chinese National Standard (CNS) for first level brick. The WTP sludge sinter made under the same operating condition exhibited higher water absorption, larger shrinkage, but poorer compressive strength. When fired at 1,100°C, the shrinkage of the WTP sludge sinter was as high as 45%, although its compressive strength and water absorption of WTP sludge brick still met the standard for the first level brick. To reuse WTP sludge in an economical way, mixtures of various proportions of WTP sludge to dam sediment are used as raw materials. A satisfactory result was achieved when the ratio of the WTP sludge was less than 20% of the mixture. Results of tests indicated that the sinter of dam sediments which are fired at a temperature of 1000~1100°C has reached the requirement for tile brick.

The Use of Water Treatment Petroleum Sludge in the Manufacture of Ceramic Products

2020 ◽  
Vol 299 ◽  
pp. 235-240
Author(s):  
S.V. Sverguzova ◽  
Zh.A. Sapronova ◽  
R.R. Valiev
Keyword(s):  
Compressive Strength ◽  
Water Treatment ◽  
Water Absorption ◽  
Building Products ◽  
Petroleum Sludge ◽  
Ceramic Samples ◽  
Voronezh Region ◽  
Ceramic Building ◽  
Natural Clays ◽  
Oil Water

The paper presents the results of studies of the possibility of utilization of petroleum sludge, obtained during the purification of oil-water emulsions, using gabbro-diabase powder in the production of ceramic building products. The sludge is proposed to add to the clay mass as an entrained additive. The influence of the sludge additive mass on such physical and mechanical indicators of ceramic samples, as density, compressive strength, water absorption, air shrinkage and fire shrinkage, and density, is studied. Ceramic samples were prepared using natural clays, deposits Bessonovka (Belgorod region) and Podgornoye (Voronezh region). It is shown that the addition of 2% mass to the clay mass of the sludge leads to an increase in the compressive strength of the samples up to 90%, an air shrinkage of 1%, an increase in water absorption 1-2%. The value of the fire shrinkage remains unchanged. With an increase in the proportion of sludge additive to 7%, all indicators slightly change. Water absorption and air shrinkage increase, compressive strength, fire shrinkage and density decrease. However, further, when there is 7% of sludge in the clay mixture, the strength of ceramic samples corresponds to a grade not lower than 150, according to GOST 530-2012.

SOLIDIFICATION OF WATER TREATMENT SLUDGE (WTS) BY CALCIUM CARBONATE POWDER (CCP)

2016 ◽  
Vol 78 (5-4) ◽  
Author(s):  
Nurliyana, I. ◽  
Fadzil, M. A. ◽  
Saman, H. M. ◽  
Hanim, N. K. ◽  
Choong, W. K.
Keyword(s):  
Compressive Strength ◽  
Calcium Carbonate ◽  
Water Treatment ◽  
Ordinary Portland Cement ◽  
High Energy ◽  
Water Treatment Sludge ◽  
High Energy Level ◽  
Treatment Processes ◽  
Water Curing ◽  
Landfill Disposal

Water treatment sludge (WTS) is a problematic waste produced from water treatment processes. WTS contains high in organic (e.g. nutrients) and inorganic (e.g. heavy metals) pollutants. There are many treatments of sludge. Current treatments of sludge are either by chemical, physical or biological treatments. However, the treatments require high energy level and expensive. Therefore, solidification method is introduced since the production of WTS is increasing. Solidification able to transform the physical forms of the sludge and depends on the type of binder used. In this study, calcium carbonate powder (CCP) was introduced as a binder to solidify WTS. The objectives of this study are to investigate the potential of CCP as binder in solidifying WTS and to obtain the optimum percentage of CCP as cement replacement material to solidify WTS. CCP was used to replace Ordinary Portland Cement (OPC) at 10%, 20%, 30% and 40%. The solidified WTS was cured under water curing for 1, 3, 7 and 28 days. The effectiveness of using CCP as binder to solidify WTS was evaluated based on the compressive strength values.  Results showed that the compressive strength of solidified WTS increased with increasing curing days. However, the compressive strength of solidified WTS was reduced proportionally with the increasing percentage replacement of OPC with CCP. In conclusion, 40% CCP contains in C5 was the optimum CCP replacement percentage. The 28-day compressive strength value of C5 was 0.62 N/mm2 and the value was exceeded the minimum allowable landfill disposal limit which is 0.34 N/mm2. 

Application Using Sugar Sediment to Enhance Mechanical Properties of Autoclaved Aerated Concrete

2013 ◽  
Vol 459 ◽  
pp. 664-668
Author(s):  
Atthakorn Thongtha ◽  
Somchai Maneewan ◽  
Chantana Punlek ◽  
Yothin Ungkoon
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Water Absorption ◽  
Open Porosity ◽  
Physical And Mechanical Properties ◽  
Fine Sand ◽  
Average Density ◽  
Quality Class ◽  
Sediment Content

The effect of fine sand replacement by the sugar sediment (0, 10, 15, 20, 25, 30, 35, 40, 45 and 50 weight %) on the physical and mechanical properties was studied in this work. The physical and mechanical properties of AAC with various contents of sugar sediment were focused on the density, the humidity, the water absorption, the open porosity volume, the compressive strength and the flexural strength. The average density, humidity, water absorption, volume of open porosity, compressive strength and flexural strength of all compositions had the value in the range of 0.57-0.61 g/cm3, 23.0-26.7 %, 0.38-0.40 g/cm3, 259-287 cm3, 4.4-5.9 N/mm2and 1.03-1.82 N/mm2, respectively. The maximum compressive strength and flexural strength were found from the AAC sample with the sugar sediment content of 30%, which were 5.9 N/mm2and 18.14 N/mm2. Moreover, these samples also exhibited the density (0.60 g/cm3), the humidity (23.6%), the water absorption (0.39 g/cm3) and the volume of open porosity (272 cm3) were claimed in quality class of 4. The specimens of AAC with the sugar sediment content of 0-40% were claimed in quality class of 4, which based on the Thai Industrial Standard 1505-1998.

scholarly journals Utilization of wastes from medium density fiberboards production as an aggregate for lightweight cement composite

2018 ◽  
Vol 174 ◽  
pp. 02005 ◽  
Author(s):  
Dorota Małaszkiewicz ◽  
Magdalena Sztukowska
Keyword(s):  
Compressive Strength ◽  
Lightweight Concrete ◽  
Medium Density Fiberboard ◽  
Cement Composite ◽  
Strength Properties ◽  
Cement Composites ◽  
Medium Density ◽  
Wood Fibers ◽  
Resin Binder ◽  
Wood Cement Composites

The possibility of recycling waste from medium density fiberboard (MDF) production into wood-cement composites was evaluated. A large quantity of lignocellulosic wastes is generated worldwide from various sources, including wood and furniture industries, leading to environmental concerns. Medium density fiberboard (MDF) is an engineered wood product, which is made from wood fibers (mainly form coniferous trees) with wax and a resin binder. This paper presents an experimental study which investigated the potential utilization of medium density fiberboard wastes (MDFW) for producing lightweight insulation concrete. The wastes were screened on #8 mm sieve to exlude big irregular elements which could negatively affect compaction and strength properties. All lignocellulosic substrates have detrimental effects on cement setting so different techniques were applied to offset the retarding effect of compounds like sugar and tannin present in the bio-based particles before mixing the wastes with cement. One type of cement CEM I 42,5 R was used in the experiment. Flexural strength, compressive strength in air-dry and wet states, and water absorption of lightweight concrete were tested. Compressive strength ranging from 0,5 to 5.3 MPa was obtained depending on the material used for the initial impregnation of MDFW fibers.

Compressive strength development in fly ash geopolymer masonry units manufactured from water treatment sludge

2015 ◽  
Vol 82 ◽  
pp. 20-30 ◽  
Author(s):  
Cherdsak Suksiripattanapong ◽  
Suksun Horpibulsuk ◽  
Pimsin Chanprasert ◽  
Patimapon Sukmak ◽  
Arul Arulrajah
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Water Treatment ◽  
Strength Development ◽  
Water Treatment Sludge ◽  
Compressive Strength Development ◽  
Masonry Units

scholarly journals On the possibility of using lime dust for the production of building materials of forced carbonate hardening

2020 ◽  
Vol 315 ◽  
pp. 07008
Author(s):  
Aleksandr Bakhtin ◽  
Nikolai Lyubomirskiy ◽  
Sergey Fedorkin ◽  
Tamara Bakhtina
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Water Content ◽  
Building Materials ◽  
Raw Materials ◽  
Average Density ◽  
Technological Parameters ◽  
Shaft Furnaces ◽  
Recycled Material

The paper presents research on the development of building materials with low level of CO2 emissions based on technogenic recycled materials. The paper addresses the determination of optimal formulation and technological parameters of obtaining materials based on lime dust generated by mechanical deposition in cyclones and bag filters of shaft furnaces, as well as finely dispersed marble limestone with a fraction of up to 5 mm. Studies have shown that it is possible to obtain carbonized material with compressive strength of more than 40 MPa from this recycled material by forced carbonization used during three hours. Moreover, to obtain such numbers, the optimal content of lime dust in raw materials should be in the range of 35-40% wt. when the water content of the mixture is 6-7% wt. The carbonized material obtained with the indicated technological parameters will have an average density of 1.95-2.0 g/cm3 and water absorption by weight of not more than 12%.

Effect of Using Flue-Gas Desulfurization Gypsum and Water Treatment Sludge on Compressive Strength of Cement Mortar

2021 ◽  
Vol 897 ◽  
pp. 143-149
Author(s):  
Weerawan Chalermsakulkit ◽  
Nuta Supakata
Keyword(s):  
Compressive Strength ◽  
Water Treatment ◽  
Flue Gas ◽  
Building Materials ◽  
Cement Mortar ◽  
Fine Sand ◽  
Flue Gas Desulfurization ◽  
Fine Aggregate ◽  
Water Treatment Sludge ◽  
Fgd Gypsum

Ordinary Portland cement (OPC) is a material that is widely used in construction. The production of OPC creates large amounts of carbon dioxide. Mortar is one of the building materials that uses cement as the main ingredient, including the use of natural sand as a fine aggregate. Therefore, to reduce the use of cement and natural materials, flue-gas desulfurization (FGD) gypsum was used instead of OPC, and water treatment sludge (WTS) was used instead of fine sand to create cement mortar. This research used both materials as ingredients in the production of cement mortar and helped to reduce waste in the environment. The objective is to study the suitable ratios of FGD gypsum and WTS in the production of cement mortar. As for the binder, FGD gypsum was used instead of OPC at 0%, 10%, 20%, 30%, and 40%. Instead of fine sand, WTS was used at 0%, 5%, 10%, and 15%. The cement mortar was tested after 7 days for compressive strength. It was found that the cement mortar made with increased ratios of FGD gypsum and WTS decreased in compressive strength.

Sign in / Sign up

Export Citation Format

Share Document