Chongqing Industrial Wastewater Treatment Equipment introduces wastewater treatment methods for cement plants and mining.
In addition to being a large energy-consuming outdoor, the cement plant is also a large water-consuming household. In order to save investment, new dry-process cement plants are generally located near limestone mines. In this way, the water supply is also a self-contained water source. The water in the plant includes production water, domestic water and fire protection water. To avoid polluting the environment with wastewater, industrial wastewater must be treated and recycled.
Cement plant wastewater treatment can effectively recycle water resources. There are several methods:
(1) Treatment of circulating cooling water and drainage outside the boiler: The majority of the wastewater from the equipment cooling water station has not changed much, but the water temperature has increased. Trace oils can be returned to The circulating cooling pool is used cyclically.
(2) Laboratory wastewater: The laboratory wastewater discharge is not large during the day and night, most of which is the cement sample maintenance water, and a small amount of chemical analysis washing water, the water quality is not seriously degraded, after adding flocculation and sedimentation, and adjusting the pH Reuse.
(3) Initial rainwater: a reasonable rainwater drainage system is built in the factory area, and it flows into the rainwater ditch. The rainwater contains less impurities and can be collected and used.
Of course, all wastewater can be concentrated. Pollutants in cement factory wastewater are mainly organic matter. Industrial wastewater treatment is extremely effective. After centralized treatment such as pretreatment, physical and chemical treatment, biochemical treatment and disinfection, the effluent water quality requirements can be met.
Mining wastewater mainly includes mine drainage, open pit drainage and waste rock drainage. A large amount of wastewater will be discharged during the mining process, but China's mining areas are facing severe water shortages, which has restricted the development of mining enterprises. A large amount of mine wastewater from mining enterprises is discharged into rivers due to poor dilution ability, which causes serious pollution. The large amount of heavy metals in the wastewater directly affects the water quality of surface water and groundwater, reducing the water quality and reducing the utilization rate. The treatment of mine wastewater is urgent. The sewage treatment equipment has the following methods for the processing of mining wastewater:
In foreign countries, technologies such as membrane method and precipitation filtration have been successfully used for reclaimed water reuse. The domestic treatment of mine wastewater is mainly sediment discharge, and the reuse rate is low. Recycling the mine wastewater can reduce the amount of fresh water used, reduce the pressure and burden of insufficient water supply, and alleviate the contradiction of water resources, which is of great significance to severe water shortage mining enterprises.
Sewage treatment equipment reuse process uses sedimentation, filtration, reverse osmosis desalination, disinfection, etc. The process is the adjustment tank-sedimentation reaction tank-inclined plate sedimentation tank-intermediate pool-mechanical filter-activated carbon filter-security filter-reverse osmosis device A clean water tank. After the process, the produced reverse osmosis concentrated water is reinjected into the mine, and the produced sludge is dewatered and transported to the tailings dam for landfill. The treated wastewater can be used for underground and underground fire protection, dust reduction, watering, greening, boilers, etc. Reclaimed water reuse equipment has high technology content, low energy consumption, stable operation, good treatment effect and low operating cost.
The above content is released by Chongqing Industrial Wastewater Treatment Equipment. For more questions, please contact the online customer service staff of the website.