Plant-sourced flocculant, flocculant mixture, condensation method and method for preparing plant-sourced flocculant

Abstract

The present invention provides a plant-derived coagulant and a coagulant mixture with higher coagulation ability. The colloidal equivalent value of the plant-derived coagulant of the present invention is -1.5mEq / g to -0.2mEq / g, and the viscosity of a 2% by weight aqueous solution is 6.0×10-3Pa·s (6.0cP) or more. In addition, the coagulant mixture of the present invention comprises the plant-derived coagulant of the present invention and a synthetic polymer coagulant, the colloid equivalent value of the synthetic polymer coagulant is -4.5mEq / g to -1.2mEq / g, and 0.2 The viscosity of the weight % aqueous solution is 1.3×10 −1 Pa·s to 4×10 −1 Pa·s (130 cP to 400 cP).

Description

technical field [0001] The present invention relates to coagulants of vegetable origin, mixtures of coagulants, methods of agglomeration and methods of preparing coagulants of vegetable origin. Background technique [0002] Along with mass production and mass consumption in recent years, the number of suspended particles discharged from water such as factory effluents has been increasing. Therefore, a synthetic polymer coagulant such as polyacrylamide and its copolymer is usually used as a coagulant for coagulating / separating particles suspended and dispersed in water, thereby making the water clear. However, synthetic polymer coagulants have the following problems: [0003] [1] Even if discharged into the soil, it is not decomposed but accumulated. [0004] [2] The monomer (acrylamide, etc.) itself is toxic. [0005] [3] It is a substance synthesized from fossil resources such as petroleum, and is a non-renewable raw material for humans. [0006] Therefore, from the vie...

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Problems solved by technology

[0004] [2] The monomer (acrylamide, etc.) itself is toxic

[0005] [3] It is a substance synthesized from fossil resources such as petroleum, and is a non-renewable raw material for humans

[0007] As a natural polymer coagulant, although guar gum (guar gum) (extract of guar seed of legume), sodium alginate (extract of brown algae such as kelp, Ecklonia cava, black kelp), starch, Gelatin, chitosan (extract of crab carapace), etc. have been studied, but these raw materials are either difficult to raise and cultivate, or their uses are limited, and their coagulation effect is poor, so they have not yet reached the level of widespread practical use.

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