Principle of treating manganese ore wastewater by polyaluminium chloride.
Mineral as a kind of natural material resources, it plays an irreplaceable role in society, is an important material basis for human life and production, but in the process of mineral development will produce a large number of washing wastewater, especially manganese ore wastewater in the high concentration of suspended solids. If the treatment is not timely, it is very easy to cause damage to the ecological environment. At this time, we can use the polyaluminum chloride coagulation method to treat manganese ore wastewater.
The production capacity of manganese mines in China is generally small, mainly because the manganese deposits in China are mostly small and medium-sized deposits, which restricts the scale of manganese mine construction. The country's annual consumption of manganese ore is more than 10 million t, ranking first in the world, but China's manganese ore resources are relatively scarce, rich ore is less, in the development and deep processing of a large number of manganese ore due to equipment and treatment technology and other constraints, so that China's manganese-containing waste and manganese-containing wastewater pollution is more serious, manganese ore mine water pollution can be divided into mineral pollution, organic pollution and bacterial pollution. There is also thermal and radioactive contamination in some mines. Organic pollution of oil, biological metabolites, wood and other substances of oxidative decomposition products. Mineral pollution has mud particles, sand, dust, mineral impurities, dissolved matter, alkali and acid and so on. Bacterial contamination is mainly contaminated by mineral powder, rock powder and associated minerals scattered during mining and transportation.
The high content of manganese ions is a major feature of manganese ore mine water. The manganese in mine water is caused by the dissolution of manganese oxides, sulfides, carbonates and silicates in rocks and minerals. During the oxidation process, manganese migrates in the water to generate Mn2 +, so manganese in the mine water mainly exists in the form of Mn2 +. In the process of mining, a large amount of waste water and waste rock are discharged from the underground, which pollutes the river, occupies a large number of pasturelands, forests and farmland, and destroys the ecological balance. Polyaluminum chloride is a kind of additive used in manganese ore wastewater treatment, its main mechanism is to absorb the bridge network sediment, so polyaluminum chloride coagulant can destroy the stability of the colloid in the wastewater, so that fine suspended particles and colloidal particles gather into coarse particles and sedimentation, so as to achieve the purification of sewage. AdoptPolyaluminium chlorideAfter treating the wastewater, the turbidity can reach 96%, and the removal rate of manganese can reach 92%. At the same time, adding polyacrylamide to treat wastewater can also achieve the effect of wastewater reuse.
Guangxi FenghuaTechnology Company LimitedProduction of products such as aluminum salt iron salt water treatment chemicals, paper chemicals and foundry materials,Production of water treatment aluminum (iron) salt seriesThe product cost is low, the quality is pure, and the water purification product has excellent water purification performance,Widely used in urban and industrial sewage, urban sewage, industrial wastewater and reuse water purification treatment engineering.
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