Recently, the Department of Ecology and Environment of Guizhou Province issued the announcement of the approval opinions on the environmental impact assessment documents (reports) of construction projects to be made on September 8, 2025. The announcement period is from September 8, 2025 to September 12, 2025 (5 working days).
. Hazardous wastes for which co-disposal is explicitly prohibited by the Technical Specification for Co-disposal of Solid Wastes in Cement Kilns (GB/T30760-2024). </p><p style=)
The project does not involve construction, and there is no construction period. The pollution prevention and control measures proposed in the Report during the operation period are agreed in principle. Waste gas pollutants in 1
# solid waste workshop mainly include particulate matter, non-methane total hydrocarbon, NH3, H2S and odor concentration. When the cement kiln is in normal production, the waste gas from 1 # solid waste workshop is collected by the negative pressure of the workshop and then sent to the high temperature section of the grate cooler at the kiln head for incineration. During the shutdown period of the cement kiln, relying on the existing 1 set of odor treatment facilities in 1 # solid waste workshop, the organized emission of NH3 and H2S in the treated waste gas meets the pollutant emission limits required in Table 2 of the Environmental Pollutant Emission Standard of Guizhou Province (DB52/864-2022). The non-methane total hydrocarbon meets the requirements of Table 2 of the Integrated Emission Standard of Air Pollutants (GB16297-1996), the particulate matter meets the requirements of Table 1 of the Emission Standard of Air Pollutants for Cement Industry (GB4915-2013), and the odor concentration meets the requirements of the secondary standard of Table 2 of the Emission Standard of Odor Pollutants (GB14554-93). It is discharged through 24 m high exhaust funnel (DA089). The odor treatment facility adopts the purification process of "cyclone dust collector + ZCF-P5W plasma air purifier + ZCF-P5W multi-stage packing spray absorption tower". The waste gas pollutants of
2 # flat silo mainly include particulate matter, NH3, H2S and odor concentration. The waste gas treatment relies on the existing one set of odor treatment facilities in 2. The organized emission of NH3 and H2S in the treated waste gas meets the pollutant emission limits required in Table 2 of the Environmental Pollutant Emission Standard of Guizhou Province (DB52/864-2022), and the particulate matter meets the requirements of Table 1 of the Air Pollutant Emission Standard of Cement Industry (GB4915-2013). After the odor concentration meets the requirements of the secondary standard in Table 2 of the Emission Standard for Odor Pollutants (GB14554-93), it will be discharged through a 30 m high exhaust funnel (DA090). The odor treatment facility adopts the purification process of "workshop negative pressure collection + filler spray absorption tower + activated carbon adsorption".
The kiln inlet waste gas is treated by the existing kiln inlet flue gas purification facilities, and the particulate matter, NOx, SO2 and NH3 in the discharged waste gas meet the requirements of Table 1 of the Emission Standard of Air Pollutants for Cement Industry (GB4915-2013). HF, HCl, mercury and its compounds (as Hg), thallium, cadmium, lead, arsenic and its compounds (as Tl + Cd + Pb + As), beryllium, chromium, tin, antimony, copper, cobalt, manganese, nickel, Vanadium and its compounds (calculated by Be + Cr + Sn + somebody + Cu + Co + Mn + Ni + V) shall be discharged through 150m high exhaust funnel (DA012) after meeting the requirements in Table 1 of Standard for Pollution Control on Solid Waste Co-processing in Cement Kiln (GB30485-2013). The existing flue gas purification facilities at the kiln inlet adopt the treatment process of "SNCR denitration + electric-bag composite dust collector", and the kiln inlet is equipped with a bypass system. The waste gas generated by the bypass system relies on the existing bypass flue gas purification system of the cement kiln. The treatment process is that the bag filter collects the dust and returns to the electric-bag composite dust collector for treatment, and then it is discharged together with the flue gas at the kiln inlet.
1 # solid waste workshop and 2 # flat storage adopt closed negative pressure to collect workshop waste gas, strengthen management, do not overload production, and ensure that the unorganized particulate matter and NH3 at the factory boundary meet the requirements of Table 3 of Emission Standard of Air Pollutants for Cement Industry (GB4915-2013); H2S meets the requirements in Table 2 of the Discharge Standard of Environmental Pollutants of Guizhou Province (DB52/864-2022); the odor concentration meets the requirements in Table 1 of the Discharge Standard of Odor Pollutants (GB14554-93) for Class II new projects; The non-methane total hydrocarbon meets the unorganized emission limit requirements in Table 2 of the Integrated Emission Standard of Air Pollutants (GB16297-1996).
2. This project only adjusts the hazard code and the disposal volume of various hazardous wastes, does not change the total disposal scale of hazardous wastes, and does not add new equipment, facilities and structures, so the discharge volume of vehicle cleaning wastewater, workshop floor washing wastewater and laboratory wastewater remains unchanged; the initial rainwater catchment area remains unchanged, and the initial rainwater volume remains unchanged. After this technical transformation, the leachate produced by 1 # solid waste workshop will be reduced, and the leachate (0.32 m3/d) of 1 # solid waste workshop will rely on the existing leachate collection tank (2 × 1.
After this technical transformation, no new domestic sewage will be added. The domestic sewage is treated by the existing domestic sewage treatment system in the cement plant. The treatment process is A/O, and the designed treatment capacity is 132t/d. The domestic sewage is reused for production after reaching the limit of Class I standard in Table 4 of the Integrated Wastewater Discharge Standard (GB 8978-1996).
1 # solid waste workshop, initial rainwater collection pool and emergency pool are divided into key anti-seepage areas; cement kiln production area is divided into general anti-seepage areas; plant roads, living and office areas are divided into simple anti-seepage areas. 1 # solid waste workshop, 2 # flat storage, initial rainwater collection pool and emergency pool adopt 2mmHDPE artificial impermeable membrane for seepage control, with permeability coefficient ≤ 10-10 cm/s, and the seepage control meets the requirements of Pollution Control Standard for Hazardous Waste Storage (GB18597-2023); The general impervious area is hardened by cement ground to meet the requirements of equivalent clay impervious layer Mb ≥
1.4.5
. The general industrial waste produced by this project is dedusting ash, and all dedusting ash in each link is reused as raw materials for cement clinker production system; The dedusting ash of the bypass ventilation system is directly used as a mixed material to be mixed with clinker for comprehensive utilization. The hazardous wastes generated by this project include laboratory waste liquid and waste lubricating oil, which are temporarily stored in the existing 1 # solid waste workshop and then sent to the cement kiln for collaborative disposal.
浙公网安备33010802003254号