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Particulate water treatment agent for environment and method for treating water polluted by harmful substances using same

A water treatment agent and a technology for harmful substances, applied in the field of granular environmental water treatment agents, can solve the problem that the undisclosed blending ratio of metal iron powder and/or iron oxide powder and magnesium hydroxide and/or magnesium oxide cannot be used for a long time. Maintaining granulation, without disclosing the blending ratio, etc., to achieve excellent adsorption and removal ability, economical efficiency, and sufficient hardness

Active Publication Date: 2015-10-28
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, in this technique, a binder is required for granulation, and as described in the specification of Patent Document 5, since a water-based binder is used, the binder may dissolve and flow out in water, which may cause eutrophication, etc. adversely affect the surrounding environment
In addition, the hardness of the purification material after granulation has not been touched at all, but it is suggested that the granulated state cannot be maintained for a long time because the water-based binder may cause a significant decrease in hardness or collapse.
In addition, in the claims and description of Patent Document 5, the specific mixing ratio of metallic iron powder and / or iron oxide powder and magnesium hydroxide and / or magnesium oxide is not disclosed, and only iron powder and magnesium oxide are disclosed in the examples. The blending ratio is 1:1 (mass ratio), and there is no disclosure of the best blending ratio of metal iron powder and / or iron oxide powder and magnesium hydroxide and / or magnesium oxide as a water treatment agent

Method used

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  • Particulate water treatment agent for environment and method for treating water polluted by harmful substances using same
  • Particulate water treatment agent for environment and method for treating water polluted by harmful substances using same
  • Particulate water treatment agent for environment and method for treating water polluted by harmful substances using same

Examples

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Effect test

Embodiment 1

[0154] Examples 1 to 2 all showed good heavy metal removal performance. Specifically, the water treatment agent of Example 1 shows that the concentration of arsenic, selenium, lead, cadmium, and chromium can be reduced to more than about 1 / 100 times, about 1 / 8 times, about 1 / 20 times, and about 1 / 20 times, respectively. / 4 times, about 1 / 5 times the concentration. The water treatment agent of Example 2 shows that the concentration of arsenic, selenium, lead, cadmium, and chromium can be reduced to more than about 1 / 100 times, about 1 / 4 times, about 1 / 3 times, about 1 / 4 times, respectively. About 1 / 2.5 times the concentration. From the above, it can be seen that the water treatment agent of Example 1 has a higher removal ability than that of Example 2 with regard to selenium, lead, and chromium.

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Abstract

The present invention pertains: to a particulate water treatment agent for the environment, for eliminating a harmful substance, and characterized by resulting in a granulated form by adding pure water to a composition configured from iron powder, magnesia, and an acidic inorganic sulfate salt; and a method that is for treating water polluted by harmful substances and that is characterized by bringing into contact polluted water containing harmful substances and the particulate water treatment agent for the environment.

Description

technical field [0001] The present invention relates to a granular type environmental water treatment agent for removing harmful substances from groundwater, river water, lake water and various industrial drainages polluted by harmful substances harmful to human body and causing health damage, and its use for treating Treatment of water contaminated with hazardous substances. Background technique [0002] Harmful substances that are harmful to the human body and cause health damage (for example, heavy metals such as cadmium, hexavalent chromium, selenium, lead, arsenic), etc., are harmful to the human body if the oral intake exceeds a certain amount. Water quality standards such as environmental standards and drainage standards are stipulated for health damage caused by ingestion of water contaminated by harmful substances and animals and plants grown in a polluted environment. Therefore, when harmful substances contained in water such as rivers, lakes, groundwater, and var...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/02B01J20/04C02F1/58C02F1/62
CPCB01J20/0229B01J20/0281B01J20/041B01J20/28004B01J20/3021B01J2220/42C02F1/281C02F2101/103C02F2101/20C02F2103/007C02F2103/06
Inventor 吉川英一郎饭岛胜之古田智之森宏介后藤义己
Owner KOBE STEEL LTD
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