Method for processing coal bed methane (CBM) associated water through iron carbon microelectrolysis-reverse osmosis combination technology
A technology of iron-carbon micro-electrolysis and combined process, which is applied in infiltration/dialysis water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., to achieve stable operation, good effluent quality, and many pretreatment units.
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Embodiment 1
[0024] The analysis results of various indicators of the used coalbed methane associated water (raw water) are shown in Table 1.
[0025] First adjust the raw water with 15% sulfuric acid to make the pH 6.0, add 2000g of reduced iron powder and 1000g of activated carbon with a particle size of 1-2mm to the 25L water sample, stir well, react at room temperature for 60min, and filter. Feed the treated water into the storage tank (2);
[0026] Through the self-priming pump (3), it enters the activated carbon filter element (4) to absorb chlorine and chlorine by-products, etc., and then enters the fiber filter element (5) with a filter aperture of 1 μm to remove the carbon powder leaked from the activated carbon, and further remove more than The 1 μm suspended matter flows into the reverse osmosis membrane device (6), and the effluent enters the storage tank (7) for reuse.
[0027] The activated carbon filter element is an Aprilia brand 50A-T33 granular activated carbon filter el...
Embodiment 2
[0036] The raw water used is the same as in Example 1, and the coalbed methane associated water is adjusted to a pH of 5.5 with sulfuric acid with a mass fraction of 10%. Add 2000g of reduced iron powder and 1000g of activated carbon with a particle size of 1-2mm in a 25L water sample and stir evenly , in which iron scraps are produced in mechanical processing plants, soaked in 10% lye at 80°C to remove surface oil stains, then soaked in 10% hydrochloric acid solution to remove surface oxides, and then rinsed with deionized water . After the iron-carbon micro-electrolysis system reacts at room temperature for 90 minutes, the effluent is filtered and then enters the reverse osmosis system. Other steps and used reverse osmosis device are with embodiment 1. The results of effluent water quality after treatment by iron-carbon micro-electrolysis-reverse osmosis combined process are shown in Table 2.
[0037] Table 2 Water quality analysis results before and after iron-carbon micr...
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