This chapter provides a comprehensive overview of grit removal and sand removal equipment used in wastewater treatment processes. Firstly, it introduces the definition and purpose of these systems, as well as their development trends in China and internationally. Secondly, the chapter covers the classification of grit chambers and sand removal equipment, outlining their main types and distinguishing features. Thirdly, it details the typical structures and design parameters of various grit chambers, including horizontal flow, aerated, dore, and bell-shaped types. Fourthly, the chapter examines the structure and technical performance of widely used grit removal equipment, such as gantry systems, chain-and-bucket and chain-and-flight collectors, paddle conveyors, and equipment for grit-water separation and transport. Finally, it outlines safety operation procedures and maintenance practices, emphasizing the correct operation of grit chambers and removal equipment to ensure safe and efficient performance. This chapter serves as a practical reference for engineers and technical staff engaged in sand and grit removal processes within water treatment facilities.