Basic technology of sewage treatment in mining and dressing industry

Abstract

The invention discloses a basic sewage treatment process of the mining selecting industry. The basic sewage treatment process comprises a core sewage treatment process and postposition auxiliary steps, in the whole technological process, control is conducted based on pH values of water of all technological points, and setting of all parameters can be conducted according to the requirements of inlet water indexes and outlet water indexes. By means of the basic sewage treatment process, the following representative characteristics and advantages of ion separation medicament of the applicant in actual application can be guaranteed, wherein quantity of reagent is little (the quantity is 10-300 g per ton of water), direct solid drug delivery is conducted, dilution is not needed, sewage water is treated in real time, buffering is not needed, the reaction time is 3-15 minutes, the removal rate of substances contained in water is as high as over 80%, various sewage treatment and discharging indexes of the nation can be met, water obtained after treatment is colorless, odorless, and free of secondary harmful chemical matter, and the sludge generated through flocculation is low in water content(less than 35%), free of foul smell, free of adhesion and the like.

Description

technical field [0001] The invention relates to the field of sewage treatment processes and methods, in particular to a basic process and method for various mining sewage treatment. Background technique [0002] In recent years, with the development of population and economy, environmental problems have become increasingly serious, and our government and people have attached great importance to them. Among them, the problem of water pollution has become a more important problem among many environmental problems. Water pollution causes soil pollution, which in turn causes air pollution and destroys the overall ecological environment. The main sources of water pollution are domestic sewage and industrial sewage, among which industrial sewage bears the brunt, and mining mining wastewater is one of the key industrial wastewater. The water volume is large and harmful to the human body and the environment, and consumes a lot of good water resources. [0003] The so-called mining ...

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Problems solved by technology

[0007] At present, mining and dressing wastewater treatment mainly uses two technical methods: physical method and chemical method; the physical method includes various filtration, natural precipitation, etc., which takes a long time, wastes water, and troublesome maintenance; while the chemical method is usually added to the water. Chemical flocculants (such as polyacrylamide (PAM) or polyaluminum chloride (PAC)), etc.; however, chemical flocculants have a large dosage, good water dilution and proportioning in advance, long-term static precipitation, non-stirring, The disadvantages of producing secondary chemical hazardous substances and high water content of sludge inevitably lead to relatively large problems in actual process and operation; for example, slow flocculation speed, large area of ​​water flow buffer and reaction supporting facilities, water resources and land The waste is relatively serious, causing secondary pollution to the water environment. The bigger problem is that the use of chemical flocculants will bring great trouble to the sludge treatment it produces. Not only does it require a lot of electricity to drive the sludge filter press or Centrifuge, and the sludge smell is very smelly, the moisture content of the sludge after treatment is still as high as 60%, more importantly, it destroys the reuse performance of mineral particles in the water body

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