Coagulant for cleaning polluted water or contaminated water

Abstract

To provide a coagulant for cleaning polluted water or contaminated water which is capable of enhancing a cohesive force, removing heavy metals and continuously treating polluted water or contaminated water in a short time and permits simply and efficiently the dehydration without exerting any effect to the natural environment. The coagulant for cleaning polluted water or contaminated water is prepared by uniformly dispersing a pH regulator, a density increasing agent and a chelate effect accelerator to a principal ingredient consisting of aluminum sulfate, calcium sulfate and sodium carbonate and mixing them. Cement can be used as the pH regulator and the cement or magnetic material can be used as the density increasing agent. Therein, ferrite can be used as the magnetic material. Further, the chelate effect accelerator comprising powders of iron, thio sodium oxide, chitosan and citric acid can be used.

Description

technical field [0001] The present invention relates to the improvement of a coagulant for purifying and treating dirty water or polluted water. For example, after putting a coagulant into dirty water or polluted water generated at industrial waste treatment sites, the filth or pollution contained in the polluted water or polluted water can be coagulated. material, water purification. Especially in a short period of time to make it form solid floating matter (block) such as filth, and make it precipitate, so that the heavy metals, halogens, and metalloid elements in the water to be treated are no longer eluted into the water. Background technique [0002] Generally, coagulants for purifying water by coagulating pollutants in water to be treated such as dirty water or polluted water into solid floating matter are classified into organic coagulants and inorganic coagulants. Among them, the organic coagulant is based on organic polymers (see Patent Document 1), because a large...

AI Technical Summary

Problems solved by technology

Therefore, in the subsequent various dehydration processes, there will be a problem that the solid floating matter will be destroyed, and the micronized suspended matter will be mixed in the treated water.

In addition, inorganic coagulants generally lower the pH value of the water to be treated, and like organic coagulants, there is still a problem that it takes a lot of time to install a neutralization tank.

[0006] Especially whether it is organic or inorganic, although the previous coagulant has improved the cohesion, but because the solid floating matter and water produced by coagulation cannot be fully separated, in the future dehydration project, it must go through the sludge concentration project, and then again Dewatering, and finally recovery of dirty components as dewatered solid sludge

In other words, it is necessary to use an expensive and complicated dehydration system, which requires high cost and a lot of work, and dehydration treatment also takes time

[0007] Moreover, whether the previous coagulant is organic or inorganic, the coagulant itself cannot fully remove oil, mercury, cadmium, lead, hexavalent chromium, arsenic and other heavy metals, and the fluorine of the halogen element is between metal and non-metal. In order to remove these oils and heavy metals, it is necessary to use other various agents and treatment processes