Inorganic chloride ion remover and application method

Abstract

Provided is inorganic chloride ion remover. The inorganic chloride ion remover comprises one or both of calcium oxide and calcium carbonate, and meta-aluminate, wherein one or both of the calcium oxide and the calcium carbonate are mixed to form a mixture, and the mixture and the meta-aluminate are mixed to form the inorganic chloride ion remover according to the ratio. According to the total mass of calcium oxide inorganic chloride ion remover, the calcium oxide accounts for 70-80% of the calcium oxide inorganic chloride ion remover, and the meta-aluminate accounts for 30-20% of the calcium oxide inorganic chloride ion remover; according to the total mass of calcium carbonate inorganic chloride ion remover, the calcium carbonate accounts for 75-85% of the calcium carbonate inorganic chloride ion remover, and sodium metaaluminate accounts for 15-25% of the calcium carbonate inorganic chloride ion remover; according to the total mass of mixed inorganic chloride ion remover, the calcium oxide and the calcium carbonate account for 70-85% of the mixed inorganic chloride ion remover, and the meta-aluminate accounts for 15-30% of the mixed inorganic chloride ion remover. An application method of the inorganic chloride ion remover comprises the steps of adding the inorganic chloride ion remover to chloric waste water, setting the addition mass ratio to be 1-5%, continuously stirring the mixture for 10-30 minutes, standing to carry out layering, and carrying out separation, wherein the supernatant is waste water without chloride ions. The inorganic chloride ion remover has the advantages of being low in price, easy to obtain, low in addition amount, simple in removal technology, small in investment, low in operation cost and the like, and the removal rate of chloride ions in industrial waste water with the chloride ion content of 50% can reach 99.9%.

Description

technical field

[0001] The invention relates to an inorganic chloride ion remover, which belongs to the technical field of sewage treatment and is used for removing industrial and domestic sewage and chloride ions in reuse. Background technique

[0002] Chloride ion is the most common anion in water and wastewater. Chloride ion can cause bitter and salty drinking water, soil salinization, pipeline corrosion, difficult plant growth, and endanger human health. At present, some local standards have made relevant regulations on chloride in wastewater. There is no mature treatment technology for the removal of chloride ions. At present, the methods for the removal of chloride ions include precipitation method, membrane separation method, evaporation method and method of adding chloride ion removal agent.

[0003] Since chloride ions can form soluble salts with most metal ions, it is difficult to remove chloride ions from water by ordinary precipitation techniques. Although silv...

Examples

Embodiment 1

[0026] According to the total mass percentage of the chloride ion remover, calcium oxide accounts for 75%, sodium metaaluminate accounts for 25%, and they are mixed to form calcium oxide inorganic chloride ion remover. A certain chemical wastewater has a chloride ion concentration of 35,000 mg / L, and the prepared calcium oxide inorganic chloride ion remover is added to the wastewater at a mass ratio of 2%, and stirred for 30 minutes. After static separation and separation, the supernatant is chlorine-removed wastewater, and the removal rate of chloride ions is 99.9%.

Embodiment 2

[0028] According to the total mass percentage of the chloride ion remover, calcium oxide accounts for 70%, and sodium metaaluminate accounts for 30%, which are mixed to form calcium oxide inorganic chloride ion remover. A certain chemical wastewater has a chloride ion concentration of 35000mg / L, and the prepared calcium oxide inorganic chloride ion remover is added to the wastewater at a mass ratio of 3.5%, and stirred for 20 minutes. After static separation and separation, the supernatant is chlorine-removed wastewater, and the removal rate of chloride ions is 99.9%.

Embodiment 3

[0030] According to the total mass percentage of the chloride ion remover, calcium oxide accounts for 80%, and sodium metaaluminate accounts for 20%, which are mixed to form calcium oxide inorganic chloride ion remover. A certain chemical wastewater has a chloride ion concentration of 35,000 mg / L, and the prepared calcium oxide inorganic chloride ion remover is added to the wastewater at a mass ratio of 5%, and stirred for 10 minutes. After static separation and separation, the supernatant is chlorine-removed wastewater, and the removal rate of chloride ions is 99.9%.

[0031] Configure calcium carbonate inorganic chloride ion remover

technical field

[0001] The invention relates to an inorganic chloride ion remover, which belongs to the technical field of sewage treatment and is used for removing industrial and domestic sewage and chloride ions in reuse. Background technique

[0002] Chloride ion is the most common anion in water and wastewater. Chloride ion can cause bitter and salty drinking water, soil salinization, pipeline corrosion, difficult plant growth, and endanger human health. At present, some local standards have made relevant regulations on chloride in wastewater. There is no mature treatment technology for the removal of chloride ions. At present, the methods for the removal of chloride ions include precipitation method, membrane separation method, evaporation method and method of adding chloride ion removal agent.

[0003] Since chloride ions can form soluble salts with most metal ions, it is difficult to remove chloride ions from water by ordinary precipitation techniques. Although silv...

Examples

Embodiment 1

[0026] According to the total mass percentage of the chloride ion remover, calcium oxide accounts for 75%, sodium metaaluminate accounts for 25%, and they are mixed to form calcium oxide inorganic chloride ion remover. A certain chemical wastewater has a chloride ion concentration of 35,000 mg / L, and the prepared calcium oxide inorganic chloride ion remover is added to the wastewater at a mass ratio of 2%, and stirred for 30 minutes. After static separation and separation, the supernatant is chlorine-removed wastewater, and the removal rate of chloride ions is 99.9%.

Embodiment 2

[0028] According to the total mass percentage of the chloride ion remover, calcium oxide accounts for 70%, and sodium metaaluminate accounts for 30%, which are mixed to form calcium oxide inorganic chloride ion remover. A certain chemical wastewater has a chloride ion concentration of 35000mg / L, and the prepared calcium oxide inorganic chloride ion remover is added to the wastewater at a mass ratio of 3.5%, and stirred for 20 minutes. After static separation and separation, the supernatant is chlorine-removed wastewater, and the removal rate of chloride ions is 99.9%.

Embodiment 3

[0030] According to the total mass percentage of the chloride ion remover, calcium oxide accounts for 80%, and sodium metaaluminate accounts for 20%, which are mixed to form calcium oxide inorganic chloride ion remover. A certain chemical wastewater has a chloride ion concentration of 35,000 mg / L, and the prepared calcium oxide inorganic chloride ion remover is added to the wastewater at a mass ratio of 5%, and stirred for 10 minutes. After static separation and separation, the supernatant is chlorine-removed wastewater, and the removal rate of chloride ions is 99.9%.

[0031] Configure calcium carbonate inorganic chloride ion remover