Antimony pollution mainly from antimony and antimony-containing metal smelting or coal mining, industrial production has a certain amount of antimony into the atmosphere, water, soil, causing an increase in the antimony content in some areas, resulting in environmental pollution. Acidic wastewater generated from antimony mining is also an important cause of environmental (especially watershed environment) pollution. When it is dissolved in water, it is easily absorbed by plants and migrates and accumulates in plants. China is the country with the most abundant reserves in the world. It is mainly concentrated in southern provinces such as Hunan, Guizhou and Guangxi. The cold water tin mine in Hunan and the Shandong Shandong peak in Guizhou are famous in China.
At present, there are many treatment methods for antimony ore wastewater, mainly adsorption methods (such as adsorption with activated carbon (AC)), electrochemical methods (such as micro-electrolysis), and chemical precipitation methods (such as adjusting pH or adding flocculant). . For example, Zhang Weining and others use the partial deposition method to remove the ruthenium in the metal alloy solution, first adjust the pH = 5-6, filter the solution through the membrane, wash and dry, then adjust the pH = 9-10, membrane filtration, washing, drying. By this method, the radon concentration can be reduced from 300 × 10-6 to 25 × 10-6. Zhang et --- micro electrolysis process and the precipitation mine drainage, acid waste water so that the reactor through the column filled with coke and scrap iron and then adding an alkali and water, after treatment, the water content can antimony 28mg / L Reduced to 0.14 mg / L.
After the on-site sampling of the Dongfengyu mine water in Dushan County, the pollution status of heavy metals such as strontium in the mine water of Dongfeng Mine was analyzed. The treatment effect of the charcoal and calcium carbonate on the wastewater of the mine was studied. Atomic fluorescence spectrometer was used to determine the content of heavy metal elements in barium, arsenic and mercury before and after treatment, which provided a technical reference for the development of antimony ore pollution control technology. The sample was collected in November 2011. The mine effluent from the Dongfengyu mining area in Dushan County, Guizhou Province was used as the sample collection object, and the effluent from the mine effluent and the lime neutralization treatment tank was collected. It is packed in a polyethylene plastic bucket. Samples are transported back to the laboratory immediately after collection, protected from light and shaken while in use. AF640-Hydride Generation Atomic Fluorescence Spectrometer (Ruimai Analytical Instruments); one in ten electronic analytical balance; cesium, arsenic, mercury hollow cathode lamp; ultrapure water system; electronic stirrer; portable pH meter. Calcium carbonate adjusts the pH value of the mine water: Weigh 2.0 g of calcium carbonate in a 250 mL beaker, add 150 mL of mine wastewater, place it in a magnetic stirrer and mechanically stir it, and measure its pH every 3 minutes. Charcoal adjustment of the pH value of the mine water: Take a 300 mm × 10 mm glass column, fill the charcoal to a height of about 100 mm, slowly inject the waste water from the mine with a 50 mL beaker, and use a 500 mL beaker to filter the filter. The solution was measured and its pH was measured every 2 minutes.
Bark Boiler,Whrb Boiler,Wood Burn Boiler,Forest Waste Boiler
Jinan Boiler Group Co., Ltd. , https://www.jinanboiler.com