Wastewater treatment plants - Biological fixed-film reactors1 Scope This European Standard specifies the design principles and performance requirements for secondary treatment by biological fixed film reactors at wastewater treatment plants for more than 50 PT. The primary application is for wastewater treatment plants designed for the treatment of domestic and municipal wastewater. Biological fixed film reactors include biological trickling filters, rotating biological contactors, submerged bed reactors and

BS 328-3 includes two tables for each of the above-specified types

Too much copper (II) sulfate pentahydrate in water can cause liver damage

This International Standard defines the characteristics for identification cards as defined in Clause 4 of this part of ISO/IEC 7811

Bollard manufacturers

BS EN 13290-1 discusses space project management

Explosion diverters designers

— Use cases that are are divided into three categories including pre-trip

EN 12602 and EN 13225

semi-rigid fire-fighting hoses for both fixed systems and vehicles and fire-fighting suction hoses for vehicles

the agreement of the set values of the NIBP simulator and the displayed values of the tested automated sphygmomanometer or the properties of the cuff and tubing

lamella mats

and internal edges with a passing