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

Pending Publication Date: 2017-10-03
星汉阿卡索环境科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the excessive treatment methods such as iron, manganese and arsenic, the manganese sand filtration treatment process was introduced from Japan 20 years ago to assist in increasing oxygen and aeration to remove heavy metals such as iron, manganese and arsenic; but manganese sand has a disadvantage, it can only remove Iron and manganese have a certain effect, but are ineffective against other heavy metals. In addition, manganese sand must be cultivated by bacterial film for 3 to 6 months, and some as long as one year, before it can remove part of iron and manganese. Cycle plant, only the effluent in the cultivation period is unqualified, and it is still used by residents
For the removal of heavy metals such as iron,

Method used

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  • Method and device for producing drinking water through deep purifying by DMI and activated carbon composite bed
  • Method and device for producing drinking water through deep purifying by DMI and activated carbon composite bed

Examples

Experimental program
Comparison scheme
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Example Embodiment

[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...

Example Embodiment

[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 ...

Example Embodiment

[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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Abstract

The invention provides a method and a device for producing drinking water through deep purifying by a DMI and activated carbon composite bed, and belongs to water treatment methods and devices. The method comprises the following steps: sterilizing and disinfecting; removing arsenic; removing heavy metal; and absorbing with activated carbon to remove organic substances, bacteria, virus left in water, and residual heavy metal and free chlorine, thus obtaining the drinking water which comprehensively meets the standard, and is pure and clean, healthy and tasty. The device comprises a raw water pump, an activated carbon absorbing separating device, etc. With the adoption of the method and the device, the efficiency of removing heavy metal such as iron, manganese and arsenic is high, and the removing rate is more than 99.8%; the heavy metal index of the drained water is below 0.01 ppm, which is beyond the current international standard of drinking water; no wastewater is drained, except the backwashing wastewater; and the backwashing is intermittently carried out at fixed period, and the backwashing wastewater accounts for 2% of the total water inlet quantity. Therefore, the water production rate is high; and the water resource can be saved.

Description

technical field [0001] The invention belongs to a water treatment method and a device, in particular to a method and a device for deep purification of a DMI and activated carbon composite bed to produce drinking water. Background technique [0002] According to data released by the Ministry of Water Resources in 2016, 70% of my country's groundwater and surface water are polluted to varying degrees, and the types of pollutants vary in different regions. The main pollutants are excessive heavy metals, excessive chemical substances, excessive fluorine, etc., as well as excessive iron in pipe network pollution, which seriously threatens people's life and health, especially excessive heavy metals, which are the main cause of cancer. Iron, manganese, and arsenic are indispensable trace elements for the human body. However, excessive iron and manganese entering the human body will seriously endanger human health. According to relevant reports and "China Environmental Protection E...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F9/04C02F101/10C02F101/20
CPCC02F1/281C02F1/283C02F9/00C02F2101/206C02F2101/103C02F2101/20C02F2101/203C02F2303/04C02F1/72C02F1/50
Inventor 齐龙郑亚青赵雨胡必成王鹰瀚
Owner 星汉阿卡索环境科技(北京)有限公司
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