Multi-stage adsorption and desorption device for removing organic impurities and nitrate nitrogen in wastewater

Abstract

The invention discloses a multistage adsorption and desorption device and method for removing organic impurities and nitrate nitrogen in wastewater, and belongs to the field of water treatment. The device comprises an inner treatment container and an outer treatment container, wherein the inner treatment container is arranged in the outer treatment container; an accommodating area is formed between the inner treatment container and the outer treatment container, and the bottom of the inner treatment container is provided with an inner container water outlet in the accommodating area. Accordingto the method, nitrogen removal adsorption resin is placed in the inner treatment container, organic adsorption resin is placed in the accommodating area between the inner treatment container and anouter treatment container; and sewage or regenerated liquid enters the inner container accommodating cavity (101) and then enters the accommodating area in the bottom of the outer treatment containerthrough the inner container water outlet. Sewage or regenerated liquid can be continuously processed, the processing effect is enhanced by utilizing hydraulic power, the processing efficiency is high,and the processing effect is good.

Description

technical field

[0001] The invention relates to the technical field of water treatment, in particular to a multistage adsorption and desorption device and method for removing organic impurities and nitrate nitrogen in wastewater. Background technique

[0002] With the increasing frequency of human activities, drinking water sources around the world, such as groundwater, river water, lake water and other surface water, have been seriously polluted by nitrate nitrogen, especially groundwater. Long-term drinking of drinking water with excessive nitrate content will have adverse effects on human health. After nitrate is ingested into the human body, it is reduced to nitrite in the stomach. Nitrite can directly oxidize ferrous ions rich in hemoglobin in the blood into ferric ions, reducing the oxygen carrying capacity of the blood, thus It can cause various diseases, such as methemoglobinemia, liver damage and cancer, etc. Babies whose resistance is not as good as adults are mor...

Examples

Embodiment 1

[0032] Such as figure 1As shown, a multi-stage adsorption and desorption device for removing organic impurities and nitrate nitrogen in wastewater in this embodiment is characterized in that it includes an inner treatment container 100 and an outer treatment container 200, and the inner treatment container 100 is set In the inside of the outer processing container 200; in this embodiment, the cross-sections of the inner processing container 100 and the outer processing container 200 are circular, and the diameter of the circle formed by the outer container side wall 210 of the outer processing container 200 is the same as that of the inner processing container. The ratio of 100 diameters is 1.2~3, is 2 in the present embodiment; The outer container sidewall 210 of outer processing container 200 forms cylindrical shape in the present embodiment, and inner processing container 100 is also cylindrical shape, and inner processing container 100 and The outer processing vessel 200 i...

Embodiment 2

[0042] The wastewater of this embodiment is from the wastewater after the biochemical treatment process, and the steps of the wastewater treatment are:

[0043] (1) Inner layer resin adsorption: Firstly, the waste water flows through the quaternary ammonium salt type anion exchange resin at a flow rate of 15BV / h for adsorption treatment, and the water inflow is 50BV; usually the resin is installed in the adsorption column, and the solution passes through continuously; the resin The volume of the resin loaded in the column is called the bed volume, abbreviated as BV, so it means that the volume of wastewater is 50 times the volume of the resin bed; the flow rate of the solution through the resin column is 15BV / h, that is, the volume of wastewater passing through the resin bed per hour is the volume of the resin bed 15 times.

[0044] The resin described in the first-level resin adsorption is a quaternary ammonium salt type strong base anion exchange resin, which comes from Jian...

technical field

[0001] The invention relates to the technical field of water treatment, in particular to a multistage adsorption and desorption device and method for removing organic impurities and nitrate nitrogen in wastewater. Background technique

[0002] With the increasing frequency of human activities, drinking water sources around the world, such as groundwater, river water, lake water and other surface water, have been seriously polluted by nitrate nitrogen, especially groundwater. Long-term drinking of drinking water with excessive nitrate content will have adverse effects on human health. After nitrate is ingested into the human body, it is reduced to nitrite in the stomach. Nitrite can directly oxidize ferrous ions rich in hemoglobin in the blood into ferric ions, reducing the oxygen carrying capacity of the blood, thus It can cause various diseases, such as methemoglobinemia, liver damage and cancer, etc. Babies whose resistance is not as good as adults are mor...

Examples

Embodiment 1

[0032] Such as figure 1As shown, a multi-stage adsorption and desorption device for removing organic impurities and nitrate nitrogen in wastewater in this embodiment is characterized in that it includes an inner treatment container 100 and an outer treatment container 200, and the inner treatment container 100 is set In the inside of the outer processing container 200; in this embodiment, the cross-sections of the inner processing container 100 and the outer processing container 200 are circular, and the diameter of the circle formed by the outer container side wall 210 of the outer processing container 200 is the same as that of the inner processing container. The ratio of 100 diameters is 1.2~3, is 2 in the present embodiment; The outer container sidewall 210 of outer processing container 200 forms cylindrical shape in the present embodiment, and inner processing container 100 is also cylindrical shape, and inner processing container 100 and The outer processing vessel 200 i...

Embodiment 2

[0042] The wastewater of this embodiment is from the wastewater after the biochemical treatment process, and the steps of the wastewater treatment are:

[0043] (1) Inner layer resin adsorption: Firstly, the waste water flows through the quaternary ammonium salt type anion exchange resin at a flow rate of 15BV / h for adsorption treatment, and the water inflow is 50BV; usually the resin is installed in the adsorption column, and the solution passes through continuously; the resin The volume of the resin loaded in the column is called the bed volume, abbreviated as BV, so it means that the volume of wastewater is 50 times the volume of the resin bed; the flow rate of the solution through the resin column is 15BV / h, that is, the volume of wastewater passing through the resin bed per hour is the volume of the resin bed 15 times.

[0044] The resin described in the first-level resin adsorption is a quaternary ammonium salt type strong base anion exchange resin, which comes from Jian...

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