# Fermentation Heating Tube Anti-Corrosion Green Production & Low-Carbon Environmental Compliance Specification ## Preface This specification serves as the final supplementary normative document of the full anti-corrosion management system covering Doc.33 to Doc.125. It integrates anti-corrosion equipment operation with green manufacturing, low-carbon energy conservation and environmental regulatory compliance requirements. This document standardizes the whole-process control of clean production, recycling of anti-corrosion auxiliary materials, emission reduction of pollutants, hazardous waste standardized disposal and carbon consumption statistical management, avoids environmental penalties and carbon consumption over-quota risks caused by irregular anti-corrosion operations, realizes the coordination of equipment anti-corrosion safety, economic lean operation and green low-carbon development, and completes the full-dimensional closed-loop management system of fermentation heating tube anti-corrosion. ## 1. Green Anti-Corrosion Raw Material Screening & Low-Carbon Procurement Management ### 1.1 Environmentally Friendly Anti-Corrosion Material Access Rules In the supplier access evaluation specified in Doc.124, green environmental indicators are incorporated into mandatory audit items: 1. Prefer low-toxicity, biodegradable pickling agents, neutral cleaning agents and non-chlorine biocides; highly toxic, volatile and persistent organic pollutant-containing chemicals are prohibited from procurement and use. 2. Prioritize high-corrosion-resistance long-service-life heating tubes, lining materials and sealing accessories to reduce the replacement frequency of spare parts, lower the carbon emission generated by repeated equipment manufacturing, transportation and installation. 3. Require suppliers to provide raw material carbon footprint reports, safety data sheets (SDS) and environmental certification documents; products containing restricted hazardous substances shall be rejected for incoming inspection. ### 1.2 Green Procurement Evaluation Mechanism In quarterly supplier performance assessment, add green scoring indicators including packaging recyclability, low-carbon transportation scheme, waste residue treatment technical support and green product proportion. Grade A priority cooperative suppliers shall be inclined to environmental-friendly manufacturers; suppliers with multiple environmental non-compliant records shall be downgraded or eliminated. ## 2. Recycled Utilization of Anti-Corrosion Cleaning Medium & Waste Resource Recovery 1. Graded recycling of pickling and alkaline cleaning waste liquid: Low-contamination cleaning waste liquid generated in routine pipeline pre-flushing shall be collected separately, filtered and treated for secondary cyclic flushing of low-risk auxiliary pipelines, reducing fresh pure water and cleaning reagent consumption. Heavily polluted waste liquid after deep biofilm removal shall be treated in accordance with Doc.119 and prohibited from direct recycling to the main fermentation heating loop. 2. Recovery and regeneration of qualified waste filter elements and anti-corrosion isolation gaskets: Non-damaged filter elements slightly covered with organic sediment can be cleaned, disinfected and inspected for secondary use; severely aging, corroded or cracked sealing materials shall be classified as industrial solid waste for centralized disposal instead of random discard. 3. Metal recycling of scrapped heating tubes and pipeline fittings: Stainless steel, titanium alloy scrapped equipment shall be delivered to qualified renewable resource enterprises for centralized recycling and remanufacturing, with recycling transaction vouchers archived; quartz, PFA polymer waste shall be sorted separately for professional environmental disposal. All recycling operations must record material batch, recycling volume, treatment mode and reuse verification data to avoid cross-contamination risks caused by irregular recycled material application. ## 3. Pollutant Total Emission Control & Standardized Environmental Compliance Operation 1. Set factory total emission quota limits for anti-corrosion wastewater, exhaust gas and solid waste: Regularly count the discharge of COD, residual acid-base, heavy metal ions and volatile organic substances generated by pickling, passivation and biocide disinfection. Once approaching the early warning quota threshold, optimize cleaning process parameters, shorten reagent action time and adopt cyclic cleaning modes to cut pollutant generation. 2. Closed operation of all chemical anti-corrosion processes: Pickling, reagent dilution and biocide preparation must be carried out in sealed ventilation operation zones to prevent acid mist, volatile harmful gas from escaping into the atmosphere; waste gas is treated by absorption purification facilities before discharge. 3. Hazardous waste whole-process traceability: Waste acid liquid, failed chemical reagents, contaminated absorbent cotton and scrapped instrument probes shall be stored in classified sealed hazardous waste containers, affixed with hazard labels, and transferred to qualified disposal institutions with electronic transfer manifests archived to meet regulatory traceability requirements. Monthly environmental sampling testing shall be conducted on treated wastewater, exhaust gas and solid waste to ensure all emission indicators comply with local environmental protection regulatory standards; abnormal over-standard emission shall trigger immediate process rectification and root cause investigation. ## 4. Anti-Corrosion Whole-Link Carbon Consumption Statistics & Low-Carbon Optimization Measures 1. Establish carbon accounting statistical caliber covering all anti-corrosion activities: Including power consumption of circulating pumps and monitoring equipment, steam consumption of heating cleaning, water resource consumption, carbon emission from raw material production and transportation, carbon footprint generated by equipment maintenance, replacement and waste disposal. Statistical data shall be summarized by workshop and production line monthly, and incorporated into the economic benefit evaluation system of Doc.122. 2. Low-carbon optimization transformation measures under the premise of guaranteed anti-corrosion safety: - Optimize medium circulation flow and cleaning time to reduce invalid energy and water consumption; - Popularize waste heat recovery technology of cleaning hot liquid for preheating of subsequent CIP procedures; - Promote long-life anti-corrosion materials to reduce the carbon emission brought by frequent spare parts replacement; - Utilize the intelligent early warning function of Doc.125 digital platform to realize predictive maintenance, avoid energy waste and pollutant emission caused by sudden equipment failure and emergency shutdown. 3. Set annual carbon reduction assessment targets for each workshop, link the completion rate of low-carbon optimization projects with anti-corrosion incentive policies in Doc.106, and reward teams that achieve both corrosion failure rate reduction and carbon consumption decline. ## 5. Environmental Emergency Prevention & Pollution Accident Disposal Combined with the major corrosion emergency specification Doc.123, expand emergency response scope to environmental pollution risks: 1. Equip each chemical operation area with leakage interception trenches, anti-seepage storage trays and hazardous absorbent materials to prevent corrosive waste liquid from infiltrating soil and entering the municipal pipe network. 2. Once wastewater overflow, hazardous waste leakage or toxic gas escape environmental accidents occur, immediately activate the environmental emergency plan, seal the pollution source, intercept contaminated pollutants, report to the environmental protection management department in a timely manner, and organize professional pollution remediation. 3. After the pollution accident, complete environmental impact assessment, formulate rectification and preventive measures, include the accident case into the anti-corrosion knowledge base for warning training, and revise relevant green operation clauses in the annual system review if there are management loopholes. ## 6. Green Archive Management & Sustainable System Iteration Green raw material certification documents, waste liquid recycling operation records, pollutant emission monitoring reports, hazardous waste transfer vouchers, carbon consumption accounting statements, environmental emergency disposal archives and low-carbon optimization project benefit verification materials shall be stored as confidential dual electronic and paper archives in accordance with Doc.108, retaining complete traceability vouchers for environmental regulatory inspection. During the annual anti-corrosion system comprehensive review, summarize the implementation effect of green and low-carbon management, screen replicable energy-saving and emission-reduction optimization schemes for factory-wide promotion, continuously improve the green operation clauses of the anti-corrosion system, realize the sustainable development of equipment anti-corrosion protection and enterprise green production, and form a long-term stable standardized governance system integrating safety, quality, efficiency, cost, digitalization and environmental compliance.
