Carbon Nanomaterials: Application and Prospects of Urban and Industrial Wastewater Pollution Treatment Based on Abrasion and Corrosion Resistance

Abstract

Environmental pollution as a result of urban and industrial wastewater has become an increasingly prominent issue. Rivers, lakes, and oceans that have become eutrophicated or polluted by suspended solids and hazardous substances in wastewater have endangered the environment. A root cause of this is the discharge of untreated urban and industrial wastewater into the ecosystem. As a solution to the pollution, wastewater treatment facilities have seen increasingly rapid development. Sewage pumps are designed to transport urban and industrial wastewater containing solid particles or hazardous substances to water treatment centers for purification and treatment. Sewage pumps are of great importance in the entire wastewater treatment system. Sewage in the environment where sewage pumps work usually contains sands, suspended particles, and plenty of saline ions. Flow passage components and sealing elements of the pump become vulnerable to abrasion and chemical corrosion, which further challenges operational stability of the pump. Research has remained focused on how to improve reliability of sewage pumps under severe conditions. Because of advances in materials science, the application of an increasing number of new materials has been witnessed, such as carbon-based composite materials and carbon nanomaterials, thanks to their fine self-lubrication performance, heat resistance, thermal and electrical conductivity, chemical stability, heat and seismic resistance, as well as plasticity. These properties contribute to enormous potential that new carbon-based composite materials and carbon nanomaterials have to offer in terms of corrosion resistance. This paper outlines application scenarios, research progress, and the prospect of new materials in sewage pumps.

How to Promote the Development of Industrial Wastewater Treatment Technological Innovation in China: A Tripartite Evolutionary Game Analysis

“…In the past forty years, wastewater has persistently been an inherently challenging issue, constraining the sustainable advancement of society and posing a threat to the ecological environment [7]. In China, industrial wastewater treatment technology primarily emulates the model used for treating urban domestic wastewater [39], which typically comprises three primary treatment systems: pretreatment, biochemical treatment, and advanced treatment [40,41]. Advanced treatment methods are primarily categorized into three main groups: physical separation methods, chemical treatment methods, and biochemical methods.…”

Dual-Function Hybrid Coatings Based on Polytetrafluoroethylene and Cu2O for Anti-Biocorrosion and Anti-Wear Applications

“…[1]. The metallic motion components of naval vessels [2], oil borehole equipment, [3] and wastewater pollution equipment [4] are exposed to seawater, sewage or oilfield produced fluids. In these mediums, a variety of corrosive microorganisms thrive, including sulfate-reducing bacteria, iron bacteria, methanogens, acid-producing bacteria and so on [5][6][7][8].…”

“…Several models have been proposed to explain mechanisms governing MIC. SRB can utilize sulfates (SO 4 2− ) as an electron acceptor and release sulfide ions (S 2− ) or hydrogen sulfide (H 2 S) in the process of metabolism [20]. The S 2− produced by SRB can react with Fe 2+ released from the steel to form FeS, which can cause the blockage of oil pipelines and the degradation of oil quality [21,22].…”