Most existing reviews discuss OCDC and OS separately, but it is concluded that the choice of treatment methods can be mutually referenced. Therefore, a comprehensive overview of the treatment technologies for hazardous solid wastes generated during both petroleum drilling and production is provided, aiming to inspire readers and contribute to the further …
In recent decades, the rapid development in China and other developing countries has increased the demand for concrete materials, depleting freshwater and river sand resources and causing environmental issues (Liu et al., 2018; Hossain et al., 2016).To address these concerns, governments have implemented policies to ban river sand …
The treatment of sand grains with Si/FDTS resulted in a lower sliding angle of 9.5°, imparting self-cleaning capabilities and higher hydrophobic efficiency. The modified sea sand grains demonstrated excellent water holding and storage capabilities in long-term experiments, which could be harnessed to improve agriculture in arid regions.
Analysis on desalting technology of sea water in China. China Environ. Protec. Industr. ... this review is set to provide a frame of state-of-the-art approaches for saline wastewater treatment based on membrane technology and stimulate ideas to enhance the treatment efficiency and sustainability in these related works. The unique …
The sand column was prepared by packing the dry sea sand into a sterile 300 ml polyvinyl chloride (PVC) syringe with a diameter of 5 cm. For each sand column, …
The invention relates to the technical field of sea sand treatment, and discloses a preparation method and application of a sea sand purifying agent, wherein the preparation method comprises the following steps: sequentially adding deionized water, sodium metaaluminate and an alcohol chain transfer agent into a reactor, uniformly stirring the …
In the present work, literature on the use of sea sand as replacement of fine aggregate has been studied. The chloride content in reinforced concrete according to various codes has been evaluated the chloride …
Research progress of soft soil foundation treatment technology. Xiaoyi Jiang 1, Qingrui Lu 2, Shijun Chen 3, Renhui Dai 1, Jinhe Gao 3 and Ping Li 1. Published under licence by IOP Publishing Ltd IOP Conference Series: Earth and Environmental Science, Volume 455, The 6th International Conference on Environmental Science and …
Slow sand filters (SSF) are simple, inexpensive, robust, and extensive forms of water treatment using gravity filtration via a fine and uniform sand bed stacked on gravel within a vessel. SSF have helped reduce …
The quenching process affects the mechanical properties of the composite. The higher cooling rate affects the amount of Mg 2 Si precipitate which affects the hardness of the Al6061-sea sand composite. The purpose of this study was to determine the effect of quenching media on T6 heat treatment on the hardness of the Al6061-sea sand …
The high magnetic field intensity and mineral magnetic differences were the critical factors influencing the magnetic separation of quartz from sea sand. The S-HGMS technology achieved effective pre-concentration of quartz from sea sand, reducing the handling capacity and providing a high-quality material for subsequent quartz refinement …
1.2. Profile of sea sand. The characterisation of sea sand was carried out to determine the applicability of sea sand for engineering purposes. Several studies have stated that the size, composition, and shape of sea sand particles affect the physical and mechanical properties of sea sand [].Di et al. [] investigated marine sand from the Zhoushan Seas …
Wastewater treatment plants (WWTPs) can act as a barrier but also as entrance routes for microplastics to aquatic environment. Conventional wastewater treatment with primary and secondary treatment processes can remove MPs from the wastewater up to 99% and most of the MPs are removed already during pre-treatment …
However, a large number of chloride ions inside the seawater and sea sand can easily induce serious corrosion of steel bars, leading to structural engineering failure in a short time [2, 3]. Therefore, probing the transport and binding of chloride ions in seawater sea sand concrete is the key to promoting its large-scale application [4, 5].
We present novel, simple, scalable and green approach to build a carbon composite for wastewater treatment. • The decoration of molasses derived carbon sheets (CS) on sea sand (SS) was conducted via simple mixing and annealing. • CS@SSC exhibited maximum adsorption capacity of ca. 71.67 mg.g-1 towards methylene blue in …
Analysis on desalting technology of sea water in China. China Environ. Protec. Industr., 3 (2018), pp. 58-60 (In Chinese) View in Scopus Google Scholar [12] ... Study on seawater desalination treatment technology of Ningde nuclear power station. New Technology and New Products in China, 6 (2014), pp. 1-2 (In Chinese) View in …
Sea sand was first used in Great Britain in concrete structures [1,2]. Besides, it accounted for 12.2% of fine aggregates used in Japanese concrete in 2011; more than 90% of coastal projects used sea sand in concrete . The Netherlands has also utilized a large amount of sea sand in non-stressed structural components .
Despite significant advancements in membrane materials and design practices, membrane fouling, and biological fouling in particular, still remains as one of the major challenges associated with RO system operation and affects process efficiency in terms of quality and quantity of treated water [10].Seawater has complex water quality …
Manap et al. (2016) found that the strength of bricks made from dredged sediment exceeds the strength of ordinary bricks. Sea sand can be used as a smooth aggregate substitute because it has a ...
Ozonation for water treatment has gradually gained interest throughout the world. By 1940, about 119 drinking water treatment plants all over the world used ozone for water treatment, and by 1977, the numbers increased to at least 1039 (Rice et al., 1981).Although disinfection was the predominant early application, as a powerful …
The composition of sea-sand varies with the sand extraction location: Table 1 summarizes the substances typical concentrations of sea-sands extracted from different regions of the world [7], [21], [24], [28], [31]. Sea-sand contains more salt than river sand, as well as seashell particles and other potentially harmful substances.
Fracking water treatment technologies. Oct. 15, 2016 ... Hydraulic fracturing (also called fracking) involves pressurized injection of a liquid consisting of water, sand and chemical additives into the ground. The fluid injection creates fissures or cracks in the underground formations and forces release of oil and gas that would often not be ...
Meanwhile, the newly developed compression cast technology (CCT) significantly improves the micro and macro properties of concrete, enhancing its durability in harsh environments. ... The desalination treatment of sea sand decelerates the hydration process of UHPSSC with untreated sea sand due to the lower ion content in desalinated …
The sea sand samples were obtained from Mangalore, Karnataka. Sea sand was used as complete and partial replacement of fine aggregates (regular sand). Sea sand with specific gravity 2.51 and fineness modulus 2.39 was used. The Sea sand showed lower fineness modulus and bulk density than the regular sand. Seven mix proportions were prepared.
Water scarcity largely threatens human survival and social development [1–3].It is estimated that more than half of the global population will face clean water shortage by 2050 as population growth …
As can be observed,river sand cement mortars and concretes were especially suffered severe aggression under harsh environment.And shortage of river …
The chloride binding experiment reveals that the treatment of sea sand cement-based composites with GO-CAFSS can enhance their chloride binding capacity by up to 39.5% after 14 days of exposure to NaCl solution. ... by the National Natural Science Foundations of China, NSFC-Shandong Joint Fund (No. U2006223), the Science and …
In place of M-sand and fresh water, the investigation uses seawater and sea sand that were obtained from the seashore of Alappuzha beach, Kerala, India. M35 grade concrete was used in the study. The tests consists of compressive strength and durability tests which includes rapid chloride permeability test, water permeability and freeze- thaw …
Both desalinated sea water and sea sand contain a certain amount of OH- ions, which helps reducing the ratio of Cl-/OH- in concrete and thus inhibit the Cl- ions …
Biological filters commonly used in sewage treatment are less used in seawater treatment. Although the composition of seawater is complex, with the advancement of water treatment technology, seawater can completely reach the standard of fresh water through multi-stage filtration and treatment processes. In fact, seawater …
حقوق النشر © 2024.Artom كل الحقوق محفوظة.خريطة الموقع