T/SDPAA T/SDPAA0002.3-2023 Active Group standards

T/SDPAA T/SDPAA0002.3-2023 Unbleached Straw Biochemical Mechanical Pulp - Part 3: Technical specifications for the comprehensive utilization of waste materials

Publish Date: 2023-10-15 Implement Date: 2023-11-15 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/SDPAA T/SDPAA0002.3-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Light industry, culture, and daily necessities

ICS Name: \nPulp

Publish Date: 2023-10-15

Implement Date: 2023-11-15

Scope

Scope: The document stipulates the requirements for the classification, collection and storage, resource utilization, production equipment, raw materials, processes, environmental protection, safety, equipment maintenance, transportation, labeling, and packaging of solid waste generated from unbleached straw biochemical mechanical pulp. This document applies to the technical requirements for the comprehensive utilization of solid waste from unbleached straw biochemical mechanical pulp. Main technical content: 1. Process requirements: The moisture content of raw materials should not exceed 20%. The screening area required for raw materials (air-dried) should not be less than 0.25 m2/kg/min, and the aperture rate should not be less than 30%. 2. Sludge and residue drying: Sludge and residue should preferentially be dewatered by mechanical pressing, with a solid content not less than 35%. 3. Evaporation and concentration of wastewater: The initial temperature of wastewater entering the evaporation and concentration system should not be less than 70℃, with suspended solids not exceeding 100 mg/kg and a solid content of 15% to 18%. The final concentrated wastewater should have a solid content not less than 45%. 4. The pH value of production wastewater and concentrated wastewater should not exceed 9.0.