What Are the Environmental Acceptance Indicators for GRC Projects? Indicator Analysis and Compliance Solutions

GRC project environmental acceptance must comply with national environmental protection regulations and industry standards, covering multi-dimensional indicators including waste gas, wastewater, solid waste, and noise, directly affecting project completion acceptance and production permits. Drawing on its environmental acceptance experience from the Shanghai Qingpu R&D and production project, Qinglong analyzes the core indicators and compliance implementation strategies.

I. Waste Gas Emission Environmental Acceptance Indicators

Strictly control waste gas emissions to reduce air pollution. Particulate matter emissions: particulate matter generated during the spraying and grinding processes in GRC production must have an emission concentration of ≤10mg/m³, requiring bag filters (dust removal efficiency ≥99%). Qinglong's workshop is equipped with an enclosed dust removal system, keeping the emission concentration below 5mg/m³; hazardous gas emissions: VOCs volatilized from resins, coatings, etc. must have an emission concentration of ≤60mg/m³, with fugitive emission monitoring point concentration ≤2.0mg/m³, requiring activated carbon adsorption devices for treatment. Qinglong achieves compliance through enclosed production workshops + adsorption systems; fugitive dust emissions: dust concentration at the factory boundary must be ≤1.0mg/m³, and production areas must adopt measures such as water spraying for dust suppression and ground hardening to prevent dust dispersion.

II. Wastewater Treatment and Discharge Indicators

Standardize wastewater treatment to protect water resources. Production wastewater discharge: wastewater generated from cleaning GRC components and flushing molds must have a pH value controlled at 6-9, suspended solids (SS) ≤50mg/L, and chemical oxygen demand (COD) ≤50mg/L, requiring the construction of sedimentation tanks + filtration systems. Qinglong achieves a wastewater reuse rate of 80% after treatment; domestic sewage discharge: employee domestic sewage must undergo septic tank + biochemical treatment, with ammonia nitrogen concentration ≤15mg/L and total phosphorus ≤0.5mg/L, and be discharged into the municipal sewage network after meeting standards; rainwater discharge: factory rainwater must be treated through initial rainwater collection tanks to prevent initial rainwater from carrying pollutants directly into discharge, and the collection tank capacity must meet the maximum 20-minute rainfall demand.

III. Solid Waste Disposal Indicators

Properly dispose of solid waste to achieve resource utilization. General solid waste: general solid waste such as GRC scrap and waste molds must be collected by category; crushed scrap can be recycled as aggregate (blending ratio ≤10%), while non-recyclable portions must be sent to compliant waste treatment facilities; hazardous waste: hazardous waste such as waste coating buckets, waste resin, and waste activated carbon must be collected separately and stored in a hazardous waste warehouse, with disposal entrusted to qualified units, achieving a disposal rate of 100%; solid waste storage: solid waste storage sites must be equipped with anti-seepage and rainproof facilities with signage posted to prevent secondary pollution. Qinglong maintains a solid waste ledger recording the entire disposal process.

IV. Noise and Other Environmental Indicators

Control noise pollution while balancing ecological protection. Factory boundary noise: daytime noise ≤65dB(A) and nighttime ≤55dB(A); production equipment must be fitted with soundproof enclosures, and workshops must have soundproof doors and windows. Qinglong meets noise emission standards through equipment noise reduction + soundproofing measures; soil and groundwater: production area floors must undergo anti-seepage treatment (anti-seepage layer thickness ≥1.5mm), with regular groundwater quality monitoring to ensure all indicators comply with the Groundwater Quality Standard; environmental management: a comprehensive environmental management system must be established, full-time environmental personnel must be assigned, and regular environmental testing and training must be conducted. Qinglong is certified under the ISO14001 environmental management system, ensuring standardized environmental management.