Method and device for producing drinking water through deep purifying by DMI and activated carbon composite bed
A deep purification and composite bed technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water pollutants, etc., can solve problems such as insufficient utilization of water resources, unqualified water output during the cultivation period, and high equipment maintenance costs , to achieve the effect of low overall operating cost, fast filtering speed and reduced infrastructure cost
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[0035] Example 1
[0036] The DMI and activated carbon composite bed of the present invention deeply purifies the method for producing drinking water. When the raw water is groundwater, it is realized through the following steps:
[0037] a. Sterilization and disinfection: Add oxidant in the raw water;
[0038] b. Arsenic removal: soluble iron-based compounds are added to the water, and the amount added depends on the amount of arsenic in the water;
[0039] c. Removal of heavy metals: In the raw water that has oxidants, the heavy metals in the water are adsorbed and removed in the form of hydroxide particles through the adsorption and separation of the mineral adsorbent DMI. The removal rate of heavy metals is over 99.8%, and the water content can be reduced. Hardness above 30%;
[0040] d. Activated carbon adsorption purification: using activated carbon adsorption to remove residual organic matter, bacteria, viruses, residual heavy metals and free chlorine in the water, that is, to o...
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[0042] Example 2
[0043] The DMI and activated carbon composite bed of the present invention deeply purifies the method for producing drinking water, when the treated raw water is surface water, it is realized through the following steps:
[0044] a. Removal of mechanical impurities: filter the raw water with a grid filter to remove mechanical impurities;
[0045] b. Flocculation and turbidity reduction: Add flocculant and stir quickly to generate insoluble substances from impurities in the water, which will be separated by precipitation to reduce water turbidity.
[0046] c. Sterilization and disinfection: add oxidant in the raw water;
[0047] d. Arsenic removal: Add soluble iron-based compounds, such as ferrous sulfate, to the water, and the amount added depends on the amount of arsenic in the water;
[0048] e. Removal of heavy metals: In the raw water with oxidants, the heavy metals in the water are adsorbed and removed in the form of hydroxide particles through the adsorption and ...
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[0051] Example 3
[0052] The method for the deep purification and production of drinking water in the DMI and activated carbon composite bed of the present invention specifically includes the following steps:
[0053] 1. Use a grill to intercept large suspended solids in the water, such as weeds, leaves, plastic bags and other objects; then pump the water into the sedimentation tank, quickly agitate and settle through the flocculant, and assist in oxygen aeration and other means to remove the organic matter in the water Precipitation, to achieve preliminary water purification; since the groundwater is relatively clear, this process is not required;
[0054] 2. For underground water sources, most of the existing water plants in our country need the process of flocculation and sedimentation, because the organic matter in the groundwater must be removed through this process. The quartz sand or manganese sand filtration at the back end cannot remove the organic matter. For underground w...
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