T/CI 045-2022 Active

Scope: This document specifies the structural form, design parameters, material selection, technical requirements, construction, and inspection requirements of the non-powered automatic mixing anaerobic fermentation device technical specifications. This document is applicable to organic waste materials such as livestock and poultry manure, toilet waste, straw less than 20mm in diameter, kitchen waste, and organic household waste, which are used as raw materials for anaerobic fermentation in liquid form (TS ≤ 5%) with a fermentation volume of 50–3000 m3 in reinforced concrete structures. Main technical content: 4. Design requirements: 4.1 Design requirements: The design of the anaerobic fermentation device, including the tank capacity, tank wall thickness, and tank bottom thickness, shall be determined based on the type, nature, quantity, geological conditions, and regional environment of the fermentation raw materials. Refer to the "Design of Biogas Projects" standards NY/T 1220, NY/T 1221, and NY/T 1222 for implementation. 4.2 Anaerobic fermentation device volume: The effective volume of the anaerobic fermentation device can be calculated according to the provisions of NY/T 1220.1 as follows: a) Calculated based on the volume load: V = QS/N. (1) Where: V – the total effective volume of the anaerobic fermentation device, in cubic meters (m3); Q – the designed processing capacity, in cubic meters per day (m3/d); S – the feedstock concentration, in kilograms per cubic meter [kg(COD)/m3]; N – the organic volume load, in kilograms per cubic meter [kg(COD)/m3·d] or kilograms per cubic meter [kg(VS)/m3·d]. b) Calculated based on the hydraulic retention time: V = TQ. (2) Where: V – the total effective volume of the anaerobic fermentation device, in cubic meters (m3); Q – the designed processing capacity, in cubic meters per day (m3/d); T – the designed hydraulic retention period, in days (d).