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

Xiaoqi Jia,Sheng Yuan,Yuliang Zhang,Hongjiang Miu,Bo Li,Canfei Wang,Zuchao Zhu,Jing Yuan

doi:10.3389/fchem.2020.600594

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.

Highlights

As urban areas are becoming increasingly populated (McNabb, 2019) along with urbanization, it is expected that by 2050, a total of over 900 million people will be living in cities
Researchers have been devoted to studies on abrasion and corrosion resistance of carbon fiber, carbon-carbon composite materials, and carbon nanocomposite, as well as on how to reduce abrasion and corrosion from particles
Weaknesses, persist and limit continuous high-quality production of carbon composite materials, as their development and application started at a later stage

Summary

Introduction

As urban areas are becoming increasingly populated (McNabb, 2019) along with urbanization, it is expected that by 2050, a total of over 900 million people will be living in cities. According to Shi et al (2018) study on how the content of carbon fiber impacted anti-abrasion performance of a nickel-based composite coating, the structure of the material layers was found to be the most uniformly distributed and the abrasion resistance was 1.7 times that of the Ni-based coating without a carbon fiber, when the carbon fiber content reached 6%.

Results

Conclusion