Membrane fouling is a complex process which often results from the additive impacts of a combination of foulants listed above [11, 26, 28].Of the various types of fouling, biological fouling is the most difficult to prevent or control in the seawater desalination [10, 23, 29, 30].The biological fouling potential depends on several factors: the concentration …
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1. Introduction. Urbanization and growing populations have accelerated the development of human infrastructure, as well as the reliance and demand on concrete and steel bars [1].River sand and freshwater are typically used in the making of concrete [2].In some coastal cities and island areas, river sand for construction is in short supply due to …
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As is well known, the gradation of aggregates has different effects on the fluidity and strength of concrete. In order to ensure the quality of SWSSC, JGJ206-2010 [17] specifies the limit value of aggregate particle size distribution. Gutt [34] believed that the geological origin of sea sand is similar to that of sand and stone used in ordinary …
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Sea sand is a widely available form of sand on comparing with the river sand. Sea sand is not used widely because it may contain chloride, sea shells in large numbers and other harmful chemicals like Fe 2 O 3, V 2 O 5, Cr 2 O 3, Ga 2 O 3, Br 2 O and Re 2 O 7.The usage of sea- sand may either address the concrete's existing …
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This study investigates the feasibility of establishing an environmentally sustainable ultra-high performance concrete from seawater and sea sand (SWSS …
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The main aim of this study was to develop and monitor an effective and cost-efficient industrial wastewater treatment system that utilizes sand, fly ash, and hearth ash. The latter two are potentially available and inexpensive industrial waste materials that can be used for filtration. The infiltration percolation method was utilized in a vertical …
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A paper in the Journal of Materials in Civil Engineering compares the chemical and physical properties of sea sand from nine locations and its use in …
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Chloramphenicol was found in wastewater influents up to 3 ng mL(-1). It was observed that the waste water treatment plants were not efficient in completely removing these antibiotics. Chloramphenicol and florfenicol were found in sea water samples near aquaculture sites at levels up to, respectively, 15.6 ng mL(-1) and 18.4 ng mL(-1).
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The development of sustainable cementitious materials is essential and urgent for the construction industry. Benefiting from excellent engineering properties and a reduced greenhouse gas footprint, alkali-activated materials (AAM) are among the robust alternatives to Portland cement for civil infrastructure. Meanwhile, concrete production …
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Sugar cane molasses and sea sand (SS) were employed as precursor materials for the synthesis of CS@SSC. SS was collected from sea shore from coastline of Arabian Sea. Molasses was obtained from sugar factory located in Kolhapur (MH, India) city. Methylene blue (C 16 H 18 C l N 3 SxH 2 O, M.W. 319.85, 97.70%) was procured …
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Media Filtration Sand, anthracite, and specialty media filters provide critical final polishing treatment to remove any trace particulates that may remain after the screening process. This ...
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In this paper, the most important observations of the effect of seawater (SW) and/or sea-sand (SS) on the properties of concrete are presented and critically …
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Sand is dredged up from the sea, transported on large barges, accumulated along the coast in a series of dunes or piles and finally deposited along the coastal perimeter where a belt of irregular stone blocks attempts to stabilise it. However, the utility of the whole operation is questionable given that erosion is already at work.
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Mining sand Excavation C, in particular, has cause degradation environment and impact social, and this just one example How operation mining can give benefits and harms public local .
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In addition to industrial requirements, water supplies for many geographic locations are dwindling at an alarming rate. MENA region is home to over 6 % of the world population but has <2 % of the global freshwater resources [25].Access to fresh water is a perennial quest in Middle Eastern states; hence, water scarcity is considered a security …
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In order to directly apply seawater and sea sand in construction without desalination, a new type of circular concrete-filled steel tube (CFST) encased …
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A less concentrated solution has a natural tendency to migrate to a solution with a higher concentration. For example, if you had a container full of water with low salt concentration and another container full of water with high salt concentration, separated by a semi-permeable membrane, the water with the lower salt concentration would start to move …
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Exploitation and utilization of low-value natural mineral resources in a feasible way are promising under the background of green sustainable development. In this study, high-performance cobalt blue composite pigments with low cobalt consumption were facilely fabricated based on sea sand via a cleaner mechanochemistry route followed by a …
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Slow sand filters (SSF) are a simple water treatment technology providing an important alternative to conventional drinking water treatment. SSF are extensive in terms of carbon cost and chemical use but require a large land area and are complex to operate, as periodic cleaning is required to prevent filter clogging.
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The major constituents of sand are silica and silicates. The facile and low-cost purification technology of silica from natural sand is of magnificent importance to the industrial applications of silicon-based materials. Herein, we report a green, low-cost, and universal method to purify silica from natural sand. Sand from deserts, rivers, and seas is …
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14.7: Wastewater and Sewage Treatment
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Therefore, this study is expected to develop a feasible and cleaner strategy for the direct value-added utilization of sea sand and propose a novel design for the …
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Industrial sand is an indispensable ingredient in the production of thousands of everyday products.Industrial sands are high purity-silica products with closely controlled sizing. Silica is the name given to a group of minerals composed solely of silicon and oxygen (SiO2), the two most abundant elements in the earth's crust. It exists in many different shapes and …
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This study investigates the feasibility of establishing an environmentally sustainable ultra-high performance concrete from seawater and sea sand (SWSS-UHPC) which utilizes industrial byproducts ...
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There are many physico-chemical as well as biological methods for the treatment of industrial wastewater (Table 1.3). The common treatment techniques, include pre-treatment, ... Grit chamber used to remove suspended inorganic material such as sand consisting of gravel, cinder, and other heavy solids gritty substances from …
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Pretreatment of feed water has shown a dramatical impact on the efficiency and performance of RO membranes [52]. It helps in providing high-quality feed water with lower levels of total dissolved ...
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Chloride pollution has become an increasingly serious environmental problem that cannot be ignored. The main chloride sources in water are industrial effluents, which usually contain high chloride concentration and are discharged from metal smelting, flue gas desulfurization and inland seawater desalination (Fig. 1 a) (Wang et al., 2004; …
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In a typical procedure, first we sieved sea sand using sieve (2000 mesh size) to get uniform size of sand. Then the sieved sand was cleaned by Aqua Regia (HCl: HNO 3; 3:1) and subsequently washed by doubly distilled water with several times to remove adhered impurities.Molasses is used as a carbon source.
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When you need heavy duty sand pumping capabilities, an industrial vacuum system from IVAC is your solution. Learn more by reading some case studies featuring IVAC's safe, efficient sand pumping equipment. 1-833-374-3738 ; 250-374-3738 ... Water Treatment Facility Maintenance:
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MineralTech Industrial Sand is a high quality silica product that is 99.3% pure silica. Our silica products are washed with fresh water and free of contaminants, low in free chlorides, and has a PH that is neutral. Products ORDER News. ABOUT. ABOUT MEET OUR TEAM. Contact Us. Call Today 281-462-4220.
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This article evaluates the effects of seawater and sea sand on concrete performance and durability, and discusses the corrosion resistance of steel in seawater …
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Rapid urbanization and industrialization have inextricably linked to water consumption and wastewater generation. Mining resources from industrial wastewater has proved to be an excellent source of secondary raw materials i.e., proficient for providing economic and financial benefits, clean and sustainable resilient environment, and …
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Our industrial sand is available in size distributions to meet many application requirements. In order to effectively serve a wide spectrum of industries we closely monitor screen sizing for consistent particle size and distribution.
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