A filter press is a solid-liquid separation device used to dewater sludge, separate solids from liquids, and filter materials in various industries, including wastewater treatment, chemical, pharmaceutical, and food processing. The primary purpose of a filter press is to efficiently remove liquid from a mixture and produce a dry cake material. The device comprises a series of filter plates with recessed chambers and a filter cloth or other filter media between each plate. The plates are typically made from materials such as polypropylene, stainless steel, or cast iron. The filter plates are assembled together, forming a stack with an opening in the centre for the feed to enter the chambers.

Fine bubble diffuser tubular are sophisticated aeration devices used in various water treatment systems, especially in wastewater treatment plants and aquaculture. These tubular diffusers are engineered to disperse tiny bubbles, significantly smaller in size compared to coarse bubble diffusers, into water or other liquids. Crafted from materials like EPDM (ethylene propylene diene monomer), silicone, or other specialized polymers, these tubular diffusers feature micro-perforations or microscopic pores along their length. These minute apertures release air in the form of very fine bubbles, which stay suspended in the water for a longer duration due to their smaller size. The prolonged contact between these bubbles and the water maximizes the surface area for gas transfer, enhancing oxygenation and mixing efficiency.