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Adsorption material for treating low-concentration ammonia nitrogen wastewater, and preparation method thereof

A low-concentration ammonia nitrogen and adsorption material technology, which is applied in the field of adsorption materials and its preparation for low-concentration ammonia nitrogen wastewater treatment, can solve the problems of increased operating costs, poor processing capacity, and large floor space, and achieve floor space savings , low production cost and large adsorption capacity

Inactive Publication Date: 2019-10-22
WUHAN XINGTIANYU ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the treatment of ammonia nitrogen wastewater is mainly divided into physical method, chemical method and biochemical method. Among them, physical method and chemical method have excellent removal effect on high concentration ammonia nitrogen wastewater, and biochemical method has excellent removal effect on low concentration ammonia nitrogen wastewater. However, the biochemical method has the following disadvantages in the treatment of ammonia nitrogen wastewater: first, it occupies a large area and requires a large investment; second, it needs to consume organic matter; third, it can only treat low-salt ammonia nitrogen wastewater.
Physical and chemical ammonia removal have become the mainstream of the existing ammonia removal technology due to their technical advantages, but for low-concentration ammonia-nitrogen wastewater, the treatment capacity becomes worse and the operating cost increases at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] S1. Activation: Put the silica matrix material with a particle size of 200-1800 mesh into the reactor and immerse it in a 0.5mol / L alkali-acid solution, stir and activate for 6h, centrifuge and wash until neutral, dry, that is Obtain the activated matrix material for subsequent use;

[0025] S2. Coating: Mix 40g of the activated matrix material in S1 with 300mL of water, beat to obtain a slurry, add 10.0mL of 0.5mol / L hydrochloric acid solution, then add 8g of aniline and 0.05g of initiator in turn, stir at room temperature for 4 hours, pump Filtration, washing with water, drying, grinding, and sieving to obtain the coating base material, the particle size of which is 200-1000 mesh;

[0026] S3. Composite: 30g of the film-coated base material in S2 and Cu-containing 2+ Mix 200mL of 100mg / L solution, adjust the pH of the system to 6.5 with NaAC-HAC buffer solution, react at a constant temperature at 50°C for 4h, filter, and wash the filter cake with deionized water unti...

Embodiment 2

[0029] S1. Activation: Put the kaolin matrix material with a particle size of 200-2000 mesh into the reactor and immerse it in a 4mol / L hydrochloric acid solution, stir and activate for 1 hour, centrifuge and wash until neutral, and dry to obtain the activated matrix material ,spare;

[0030] S2. Coating: Mix 50g of the activated matrix material in S1 with 400mL of water, beat to obtain a slurry, add 25mL of 4mol / L hydrochloric acid solution, then add 40g of aniline and 0.06g of initiator in turn, stir at room temperature for 2-8h, pump Filter, wash with water, dry, grind, and sieve to obtain the film-coated matrix material, with a particle size of 200-2000 mesh;

[0031] S3. Composite: 40g of the film-coated base material in S2 and Cu-containing 2+ Mix 250mL of 800mg / L solution, adjust the pH of the system to 6 with NaAC-HAC buffer solution, react at a constant temperature at 60°C for 2h, filter, and wash the filter cake with deionized water until Cu 2+ The content is lower...

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Abstract

The invention belongs to the field of new environmentally-friendly materials, and particularly relates to an adsorption material for treating low-concentration ammonia nitrogen wastewater, and a preparation method thereof. The preparation method sequentially comprises: alkali soaking activation of matrix material, polyaniline film covering of activated matrix material, copper solution soaking compounding treatment of coated matrix material, pore forming treatment after mixing with biomass material and binder, and other steps. According to the present invention, the adsorption material has characteristics of large adsorption amount and strong adsorption capacity; when low-concentration ammonia nitrogen wastewater flows through the adsorption material, ammonia nitrogen is adsorbed onto the material so as to achieve the purpose of ammonia removing; and the main raw materials for preparing the adsorption slow-release material are inexpensive products such as silica, white carbon black, biomass materials and the like, such that the production cost is low.

Description

technical field [0001] The invention belongs to the field of new environmental protection materials, and in particular relates to an adsorption material for treating low-concentration ammonia nitrogen wastewater and a preparation method thereof. Background technique [0002] At present, the treatment of ammonia nitrogen wastewater is mainly divided into physical method, chemical method and biochemical method. Among them, physical method and chemical method have excellent removal effect on high concentration ammonia nitrogen wastewater, and biochemical method has excellent removal effect on low concentration ammonia nitrogen wastewater. However, the biochemical method has the following disadvantages in the treatment of ammonia nitrogen wastewater: first, it occupies a large area and requires a large investment; second, it needs to consume organic matter; third, it can only treat low-salt ammonia nitrogen wastewater. Due to their technical advantages, physical and chemical amm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/30C02F101/16
CPCB01J20/3007B01J20/3042C02F1/288C02F2101/16C02F2209/14
Inventor 卢玉献王欢许灯彪
Owner WUHAN XINGTIANYU ENVIRONMENTAL ENG
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