Adsorbing material, preparation thereof and method for purifying sewage by using adsorbing material

Abstract

The invention discloses an adsorbing material for removing phosphorous and nitrogen, a preparation method thereof and a method for purifying sewage by using the adsorbing material. The preparation method for the adsorbing material comprises a step of mixing a clay mineral material, an organic modifier and a proper amount of deionized water to performing organic modification treatment on the clay mineral material. The adsorbing material prepared by the method can efficiently remove the phosphorous and the nitrogen, has high adsorption capacity, high removal efficiency and strong water quality change impact capacity resistance, and can be used for treating the sewage which cannot be treated by a biochemical method, the treatment does not produce sludge, and the treatment cost is low.

Description

technical field

[0001] The invention relates to a solid adsorption material and a preparation method thereof, in particular to a denitrification and phosphorus removal solid adsorption material containing inorganic materials and a preparation method thereof, belonging to the field of environmental protection. Background technique

[0002] Due to the influence of natural and human factors, the nitrogen, phosphorus and other nutrients discharged into rivers, lakes and seas continue to increase, the nitrogen and phosphorus in the water body exceeds the standard, and the eutrophication of the water body continues to intensify, causing the rapid reproduction of algae and other plankton, causing cyanobacteria or Red tides occur frequently. Algal blooms not only lead to the decline of dissolved oxygen in the water body, the deterioration of water quality, and the death of fish and other organisms; it also seriously affects the safety of drinking water for the people and seriously t...

Examples

Embodiment 1

[0043] 1. Prepare the ingredients according to the following ingredients and weights:

[0044] Sodium Bentonite 1.20kg

[0045] Dihydrogenated Tallow Dimethyl Ammonium Chloride 0.81kg

[0046] Deionized water 0.80kg

[0047] Wherein, the molar ratio of the cation exchange capacity of dihydrogenated tallow dimethyl ammonium chloride and sodium bentonite is 1:1.

[0048] 2. Add all the sodium bentonite, dihydrogenated tallow dimethyl ammonium chloride and deionized water into the kneader in turn for mixing, so that the water content in the mixture is 28.5%, and the mixing temperature is controlled at 60°C, Continue mixing for 30 minutes;

[0049] 3. Add the mixed material into the feeding hopper of the twin-screw extruder (model SHJ-20, Nanjing Jieya Extrusion Equipment Co., Ltd.), and extrude it into strips through the twin-screw extruder;

[0050] 4. Dry the strip extrudate at 50°C to make its water content reach 10%;

[0051] 5. Pulverize the dried strip extrudate to obt...

Embodiment 2

[0053] 1. Prepare the ingredients according to the following ingredients and weights:

[0054] Sodium Bentonite 1.20kg

[0055] Dihydrogenated Tallow Dimethyl Ammonium Chloride 0.48kg

[0056] Deionized water 0.25kg

[0057] Wherein, the molar ratio of the cation exchange capacity of dihydrogenated tallow dimethyl ammonium chloride and sodium bentonite is 0.6:1.

[0058] 2. Add all the sodium bentonite, dihydrogenated tallow dimethyl ammonium chloride and deionized water into the kneader in turn for mixing, so that the water content in the mixture is 13%, and the mixing temperature is controlled at 90°C. Continue mixing for 60 minutes;

[0059] Except that the moisture content after drying is 8%, the remaining steps are the same as those in Example 1.

Embodiment 3

[0061] 1. Prepare the ingredients according to the following ingredients and weights:

[0062] Sodium Bentonite 1.20kg

[0063] Sodium N-Oleoyl N-Methyl Taurate 1.46kg

[0064] Deionized water 2.48kg

[0065] Wherein, the molar ratio of the cation exchange capacity of sodium N-oleoyl N-methyl taurate to sodium bentonite is 0.8:1.

[0066] 2. Add all sodium bentonite, sodium N-oleoyl N-methyl taurate and deionized water into the kneader for mixing, so that the water content in the mixture is 48.2%, and the mixing temperature is controlled at 60 ℃, continue mixing for 5 minutes;

[0067] The remaining steps are the same as in Example 1.

technical field

[0001] The invention relates to a solid adsorption material and a preparation method thereof, in particular to a denitrification and phosphorus removal solid adsorption material containing inorganic materials and a preparation method thereof, belonging to the field of environmental protection. Background technique

[0002] Due to the influence of natural and human factors, the nitrogen, phosphorus and other nutrients discharged into rivers, lakes and seas continue to increase, the nitrogen and phosphorus in the water body exceeds the standard, and the eutrophication of the water body continues to intensify, causing the rapid reproduction of algae and other plankton, causing cyanobacteria or Red tides occur frequently. Algal blooms not only lead to the decline of dissolved oxygen in the water body, the deterioration of water quality, and the death of fish and other organisms; it also seriously affects the safety of drinking water for the people and seriously t...

Examples

Embodiment 1

[0043] 1. Prepare the ingredients according to the following ingredients and weights:

[0044] Sodium Bentonite 1.20kg

[0045] Dihydrogenated Tallow Dimethyl Ammonium Chloride 0.81kg

[0046] Deionized water 0.80kg

[0047] Wherein, the molar ratio of the cation exchange capacity of dihydrogenated tallow dimethyl ammonium chloride and sodium bentonite is 1:1.

[0048] 2. Add all the sodium bentonite, dihydrogenated tallow dimethyl ammonium chloride and deionized water into the kneader in turn for mixing, so that the water content in the mixture is 28.5%, and the mixing temperature is controlled at 60°C, Continue mixing for 30 minutes;

[0049] 3. Add the mixed material into the feeding hopper of the twin-screw extruder (model SHJ-20, Nanjing Jieya Extrusion Equipment Co., Ltd.), and extrude it into strips through the twin-screw extruder;

[0050] 4. Dry the strip extrudate at 50°C to make its water content reach 10%;

[0051] 5. Pulverize the dried strip extrudate to obt...

Embodiment 2

[0053] 1. Prepare the ingredients according to the following ingredients and weights:

[0054] Sodium Bentonite 1.20kg

[0055] Dihydrogenated Tallow Dimethyl Ammonium Chloride 0.48kg

[0056] Deionized water 0.25kg

[0057] Wherein, the molar ratio of the cation exchange capacity of dihydrogenated tallow dimethyl ammonium chloride and sodium bentonite is 0.6:1.

[0058] 2. Add all the sodium bentonite, dihydrogenated tallow dimethyl ammonium chloride and deionized water into the kneader in turn for mixing, so that the water content in the mixture is 13%, and the mixing temperature is controlled at 90°C. Continue mixing for 60 minutes;

[0059] Except that the moisture content after drying is 8%, the remaining steps are the same as those in Example 1.

Embodiment 3

[0061] 1. Prepare the ingredients according to the following ingredients and weights:

[0062] Sodium Bentonite 1.20kg

[0063] Sodium N-Oleoyl N-Methyl Taurate 1.46kg

[0064] Deionized water 2.48kg

[0065] Wherein, the molar ratio of the cation exchange capacity of sodium N-oleoyl N-methyl taurate to sodium bentonite is 0.8:1.

[0066] 2. Add all sodium bentonite, sodium N-oleoyl N-methyl taurate and deionized water into the kneader for mixing, so that the water content in the mixture is 48.2%, and the mixing temperature is controlled at 60 ℃, continue mixing for 5 minutes;

[0067] The remaining steps are the same as in Example 1.

Images