(1) Mining. All quarries must be blasted by approved professional blasting companies. The drilling process for uses hydraulic down-the-hole drilling rigs (drilling rigs with dust collection devices), which effectively solves the problem of dust pollution caused by manual pneumatic drilling; the blasting adopts the deep hole micro-differential blasting method, and the mine blasting adopts the loosening blasting method. Spraying and watering measures are taken for the blast pile and mining and loading operation to achieve the purpose of mine management.
(2) Waste pile. It is also an effective means to solve the problem of mine pollution by with the management of waste piles; the pile is laid with spraying pipelines, and the stacking and unloading operations take spraying dust suppression measures, and the soil is covered greened in time.
(3) Feed bin. The primary crushing feed bin should be built with three-sided barriers and a top-covered shed, and the shed have a depth of not less than 8 meters. The feed bin is equipped with a dust collector or a spraying dust suppression device, which can effectively prevent the dust the unloading from overflowing. When the feed bin barrier is damaged, it must be maintained and perfected in time.
(4) Crushing and screening. The primary, secondary crushing, and screening equipment must be fully enclosed in a factory building (reinforced concrete structure) and equipped with dust removal facilities. The height of the collector exhaust stack should not be less than 15 meters and should be more than 3 meters higher than the tallest building in the vicinity. The factory building for crushing and screening equipment must be fully enclosed to thoroughly solve the problem of unorganized emission of dust from crushing and screening. The factory building must be maintained and perfected in when it is damaged.
(5) Stone material conveying and transfer. From the primary crushing discharge port to the secondary crushing, screening, and finished product warehouse, material conveying and the return ore conveying of the secondary crushing and screening process must be fully enclosed with a belt corridor that meets the daily inspection and cleaning requirements, and belt corridor is equipped with a dust collector at the material discharge and transfer end. The fixed spraying facilities are set at the final discharge end of the belt to effectively prevent dust pollution caused by the belt discharge. The material transfer system must be enclosed.
(6) Finished product warehouse. It is forbidden to store any finished or semiinished materials outdoors. All kinds of finished and semi-finished materials (including stone chips and stone powder of various particle sizes) must be directly conveyed into the fully enclosed and semi-finished product warehouse through the fully enclosed conveyor belt, and the loading and unloading of finished and semi-finished materials must be carried out in the enclosed, and it is strictly forbidden to carry out loading and unloading operations outdoors with a loader, which effectively solves the problem of dust pollution caused by material stacking and loading unloading.
(7) Spraying water supply facilities. The spraying facilities built at the primary crushing feed port, the product belt discharge terminal, and the waste should be equipped with water supply wells and installed with metering facilities. The water supply pipeline should take insulation measures to ensure normal use in winter.
(8) Dust removal facilities. Advanced dust removal methods such as high-efficiency pulse bag dust removal be adopted, and professional design by manufacturers with environmental governance design qualifications must be commissioned, and reported to the municipal environmental protection department for filing. The design of the removal air volume, the size of the dust collection hood, and the diameter of the pipeline for the crushing and screening equipment must fully meet the needs of thoroughly solving the of dust from production equipment overflowing without organization (the dust removal design air volume for a single crushing and screening equipment is calculated as greater than 120003/h, and the projection area of the dust collection hood is more than 2.5 times the dust-producing area of the equipment).
(9) Hard and greening of the site. The transport channel from the quarry to the crushing equipment, the transport channel from the quarry to the waste pile, and the channel from finished product warehouse to the road network must be hardened, and the road surface must be cleaned and watered to suppress dust every day, effectively preventing dust pollution during transportation The area outside the road must also be fully hardened or greened, and cleaned and watered to suppress dust every day.
(10) Noise control. production equipment with high noise and vibration, such as crushers, vibrating screens, and induced draft fans, the machine base should adopt basic anti-vibration measures, install antiibration devices, and take corresponding noise reduction measures to ensure that noise emissions meet the noise emission standards for industrial and mining enterprises at the factory boundary.
(11 ) Soil and water conservation. The quarry has a soil and water conservation plan approved by the Agriculture and Forestry Bureau, and soil and water conservation measures are implemented in accordance the approved plan, meeting the requirements for soil and water conservation.
(12) Video surveillance. Video surveillance is set up in the production operation area as required and is connected to the district environmental protection bureau and the land and resources bureau, achieving 24-hour video surveillance. For problems such as excessive emissions, unorganized, and dust pollution that are discovered, the district environmental protection bureau and the land and resources bureau will strictly punish them in accordance with relevant laws and regulations.
(13) Product transportation. Product transportation must use fully enclosed transport tools, and the loading height must not exceed the height of the carriage, to avoid the phenomenon of due to bumps. Open-top transportation or overloading transportation is not allowed.
(14) Emission limits. Referring to the emission limits for pollutants from various of mining and processing in the "Emission Standards for Atmospheric Pollutants from the Lime Industry" issued by the Hebei Provincial Environmental Protection Department and the Hebei Quality and Technical Supervision Bureau, the maximum allowable emission limit for particulate matter from production equipment such as crushers and screens is 30mg/m3, and limit for unorganized emission of particulate matter in the workplace is 1mg/m3 (10 meters outside the factory boundary).
(15) Standardized. Set up full-time environmental protection management personnel, who should be familiar with environmental protection business and have experience in daily environmental management of the enterprise. Establish an enterprise environmental management system, strictly manage positions, clarify the environmental protection responsibilities of positions and daily environmental protection behavior norms, and establish and implement an environmental protection position assessment system. Form and implement the operation, maintenance, and management system of production equipment and facilities and pollution prevention and control facilities. Establish an environmental protection facility operation ledger to ensure the and normal operation of various equipment and facilities. Formulate an enterprise environmental emergency plan, and implement the environmental pollution report system, environmental patrol system, and environmental accident management.
