The EWT Aerplate grit separator transforms a conventional aerated grit chamber into a high efficiency grit removal system. It contains a wastewater aeration zone and a grit settling zone equipped with parallel inclined plates.
The advantages of conventional aerated grit chambers are well known. Aeration treats influent wastewater, improving the performance of downstream processes such as primary clarification. Odor-causing dissolved gases are removed, simplifying their capture and treatment. Aerated grit chambers also remove grit in a system with minimal headloss. With the addition of the EWT Aerplate improvements, aerated grit removal systems are now more efficient, capable of reliably removing +150 mesh grit particles, and even of removing particles as small as +200 mesh.
The EWT Aerplate system uses basic particle settling principles and inclined plate technology to greatly improve the performance of aerated grit chambers. Whether applied to new grit removal systems or retrofitted into existing aerated grit chambers, the EWT Aerplate technology is capable of significantly increasing the quantity of captured grit, especially finer grit particles that conventional systems fail to remove.
A key feature of the EWT Aerplate system is the separation of the chamber into two zones: one for aeration, the other for clarification. Incoming wastewater is mixed and freshened in the aeration zone, while grit particles are simultaneously scoured free from organic materials it contains. The aerated wastewater then flows under the longitudinal baffle to the clarification zone, where grit particle settling occurs. Separating the clarification zone and targeting the removal of fine grit particles over a wide range of flows makes the EWT Aerplate technology a highly efficient aerated grit chamber system.