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Ammonia nitrogen adsorbing material and preparation method thereof

An adsorption material, ammonia nitrogen technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem that is not suitable for the treatment of large-flow and high-concentration nitrogen-containing wastewater, and the high requirements for the safe use and storage of liquid chlorine , high operation and management costs, etc., to achieve the effect of high market application prospects, simple and feasible preparation method, and good ammonia nitrogen adsorption effect

Inactive Publication Date: 2016-02-17
SHENZHEN YU CHI TESTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The breakpoint chlorination method reacts quickly and the equipment cost is low, but the safe use and storage of liquid chlorine are high, and the amount of chlorine added during operation is large, resulting in high operation and management costs.
Therefore, this method is not suitable for the treatment of large-flow and high-concentration nitrogen-containing wastewater, especially wastewater containing a large amount of organic nitrogen compounds

Method used

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  • Ammonia nitrogen adsorbing material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The ammonia nitrogen adsorption material was prepared according to the following steps:

[0032] (1) Select 100g of a sediment sample, freeze-dry it at -80°C, grind it into powder, and pass it through a 100-mesh sieve to obtain a sediment powder;

[0033] (2) Under the condition of feeding nitrogen, anaerobically heat the sediment powder at 600°C for 2 hours;

[0034] (3) Washing the natural zeolite with deionized water, drying and grinding into powder, and passing through a 100-mesh sieve to obtain natural zeolite powder;

[0035] (4) Mix the heated sediment powder and natural zeolite powder uniformly at a mass ratio of 7:3 to obtain material A.

Embodiment 2

[0037] The ammonia nitrogen adsorption material was prepared according to the following steps:

[0038] (1) Select 100g of a sediment sample, freeze-dry it at -80°C, grind it into powder, and pass it through a 100-mesh sieve to obtain a sediment powder;

[0039] (2) Under the condition of feeding nitrogen gas, anaerobically heat the sediment powder at 500°C for 2 hours;

[0040] (3) Washing the natural zeolite with deionized water, drying and grinding into powder, and passing through a 100-mesh sieve to obtain natural zeolite powder;

[0041] (4) Mix the heated sediment powder and natural zeolite powder evenly according to the mass ratio of 7:3 to obtain the mixed powder;

[0042] (5) Put the mixed powder into 1mol / L NaCl solution and stir for 2 hours, filter the solution to obtain material B (modified ammonia nitrogen adsorption material).

Embodiment 3

[0044] The ammonia nitrogen adsorption material was prepared according to the following steps:

[0045] (1) Select 100g of a sediment sample, freeze-dry it at -80°C, grind it into powder, and pass it through a 100-mesh sieve to obtain a sediment powder;

[0046] (2) Under the condition of feeding nitrogen, anaerobically heat the sediment powder at 600°C for 2 hours;

[0047] (3) Washing the natural zeolite with deionized water, drying and grinding into powder, and passing through a 100-mesh sieve to obtain natural zeolite powder;

[0048] (4) Mix the heated sediment powder and natural zeolite powder evenly according to the mass ratio of 7:3 to obtain the mixed powder;

[0049] (5) Put the mixed powder into 1mol / L NaCl solution and stir for 2 hours, filter the solution to obtain the modified mixed material;

[0050] (6) The modified mixed material was heated at 400° C. for 2 h to obtain material C (modified and heat-treated ammonia nitrogen adsorption material).

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Abstract

The invention discloses an ammonia nitrogen adsorbing material and a preparation method thereof. The preparation method specifically includes the steps that a sediment sample is selected, freeze-dried and ground into powder, the powder is screened, and sediment powder is obtained; under the condition that nitrogen is introduced, the sediment powder is anaerobically heated at the temperature of 500-800 DEG C; natural zeolite is cleaned, dried and ground into powder, the powder is screened, and natural zeolite powder is obtained; the heated sediment powder and the natural zeolite powder are evenly mixed, and the ammonia nitrogen adsorbing material is obtained. The preparation method further can include the steps of modification, heat treatment and the like. The material has the good ammonia nitrogen adsorbing effect, the ammonia nitrogen removal rate of water reaches 70%, and the material is suitable for removing ammonia nitrogen in natural water. The purpose of treating waste with waste is achieved through sediment in a lake, a raw material source is cheap and easy to obtain, and production cost is greatly reduced. The ecological risk to the lake water is low, the preparation method is simple and feasible, and market application prospects are good.

Description

technical field [0001] The invention relates to an adsorption material, in particular to an ammonia nitrogen adsorption material and a preparation method thereof. Background technique [0002] Ammonia nitrogen is an important indicator to measure the process of water toxicity and eutrophication. When the concentration is too high, it will have a toxic effect on the growth of aquatic organisms. Excessive ammonia nitrogen content in the water environment has many harmful effects: the concentration of dissolved oxygen decreases, the water body becomes black and smelly, and ultimately endangers the survival of aquatic organisms; it leads to eutrophication of the water body; it causes harm to human health, etc. Therefore, at this stage, ammonia nitrogen has become one of the binding indicators for the reduction of water pollutants in my country. How to further reduce ammonia nitrogen in water is an important challenge for my country's environmental protection. [0003] Sediment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/30C02F1/28C02F101/16
Inventor 王志苗郎贵林何姝李凌萍
Owner SHENZHEN YU CHI TESTING TECH CO LTD
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