No, you do not necessarily need a special sink to install a garbage disposal. Most standard sinks are compatible with garbage disposals. The important factor to consider is the presence of a mounting flange or collar on the sink. This is where the garbage disposal unit will attach.
During the installation process, the mounting flange of the garbage disposal is secured to the sink's drain opening using a mounting ring and bolts. As long as your sink has a standard drain opening with a compatible size (typically 3.5 inches), you should be able to install a garbage disposal.
However, it is worth noting that certain sink materials, such as porcelain or ceramic, may require extra caution during the installation process to prevent damage. Additionally, if you have an undermount sink, the installation process may be slightly different, and you may need to consult a professional plumber for assistance.
While a special sink is not required, it is important to ensure that your sink is compatible with the installation process and that the necessary connections can be made securely.