The new Moyno® Max-Flow Annihilator™ Grinder System is a custom engineered headworks debris handling system that protects downstream pumps, valves and process equipment in water treatment plants and their lift stations. The cost-effective, low maintenance Moyno Max-Flow Annihilator Grinder System can be used in place of bar rakes and screens as well as drum screen grinders for enhanced performance. The Max-Flow system contains two or more Annihilator grinders mounted side-by-side in a stainless steel retrieval frame in the headworks of a waste treatment system. They can be installed in an in-line or a staggered or offset design to accommodate a variety of channel widths. The frame is engineered-to-order and pre-fabricated. It includes guide rails to permit the independent retrieval of each grinder for easy maintenance. Steel panels can also be inserted in place of a grinder to divert the flow to the remaining grinders during maintenance, eliminating the need for costly diversion or by-pass channels. Stainless steel or FRP control panels can be installed to control the operation of each grinder independently using manual or automated control systems.