Sodium pyrophosphate modified water purification sludge/zeolite composite adsorbent and preparation method and application thereof

A composite adsorption and sodium pyrophosphate technology, applied in water/sludge/sewage treatment, water pollutants, water/sewage treatment, etc., can solve problems such as water quality and aquatic organism survival and growth hazards, physical exhaustion, dysfunction, etc. , to achieve active properties, small ionic radius and good removal rate

Pending Publication Date: 2021-05-28
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Eutrophication has caused serious harm to water quality and the survival and growth of aquatic organisms
In addition, nitrite nitrogen can also damage organs such as the liver, spleen and kidneys of humans and animals, making them dysfunctional, leading to physical exhaustion and listlessness.

Method used

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  • Sodium pyrophosphate modified water purification sludge/zeolite composite adsorbent and preparation method and application thereof
  • Sodium pyrophosphate modified water purification sludge/zeolite composite adsorbent and preparation method and application thereof
  • Sodium pyrophosphate modified water purification sludge/zeolite composite adsorbent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Effect of water purification sludge / zeolite composite adsorbent on ammonia nitrogen removal

[0032] Mix 100-200 mesh zeolite powder and water purification sludge powder at a weight ratio of 1:2, 1:4, 1:6, and 1:8, add the same amount of distilled water, stir evenly, and put it into a granulator to make Granular, put it in an oven to dry for 5 hours, and calcinate the particles in a muffle furnace at 600°C for 2 hours to make a water purification sludge / zeolite composite adsorbent. The water purification sludge powder was granulated in the same way, dried and calcined at 600°C for 2 hours to obtain an undoped raw sludge adsorbent. The SEM image is shown in figure 1 .

[0033] Weigh 1.0g of adsorbent respectively and put them into different containers containing 50mL of NH with a concentration of 50mg / L. 4 In the Erlenmeyer flask of Cl solution, place the Erlenmeyer flask in a constant temperature oscillator, set the temperature to 25°C, the speed to 120r / mi...

Embodiment 2

[0034] Example 2 Water Purification Sludge / Zeolite Composite Adsorbent Effect on Ammonia Nitrogen Removal

[0035] Mix 100-200 mesh zeolite powder and water purification sludge powder at a weight ratio of 1:6, add the same amount of distilled water, stir evenly, put it into a granulator to make granules, and then put it in an oven to dry for 5 hours, and separate the granules Calcined in a muffle furnace for 2 hours to make a water purification sludge / zeolite composite adsorbent; the calcination temperatures were 400°C and 800°C respectively.

[0036] Weigh 1.0g of adsorbent respectively and put them into different containers containing 50mL of NH with a concentration of 50mg / L. 4 In the Erlenmeyer flask of Cl solution, place the Erlenmeyer flask in a constant temperature oscillator, set the temperature to 25°C, the speed to 120r / min, and shake at a constant temperature for 24 hours. After the adsorption, the solution was left to stand for 5 hours, and conventionally centrifug...

Embodiment 3

[0037] Example 3 Water Purification Sludge / Zeolite Composite Adsorbent Effect on Ammonia Nitrogen Removal

[0038]Mix 100-200 mesh zeolite powder and water purification sludge powder at a weight ratio of 1:6, add the same amount of distilled water, stir evenly, put it into a granulator to make granules, and then put it in an oven to dry for 5 hours, and separate the granules Calcined in a muffle furnace at 600°C for 3 hours to make a water purification sludge / zeolite composite adsorbent; weigh 1.0 g of the adsorbent and put it into different containers containing 50 mL of NH with a concentration of 50 mg / L 4 In the Erlenmeyer flask of Cl solution, place the Erlenmeyer flask in a constant temperature oscillator, set the temperature to 25°C, the speed to 120r / min, and shake at a constant temperature for 24 hours. After the adsorption, the solution was left to stand for 5 hours, and conventionally centrifuged. The absorbance of the supernatant was measured, and the adsorption cap...

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Abstract

The invention discloses a sodium pyrophosphate modified water purification sludge / zeolite composite adsorbent and a preparation method and application thereof. The preparation method of the sodium pyrophosphate modified water purification sludge / zeolite composite adsorbent comprises the following steps of mixing water purification sludge powder with zeolite powder, then adding the mixture into a sodium pyrophosphate solution for dipping, then putting the mixture into a drying oven for drying, and then adding water to form a sludge mixture, and granulating and calcining the sludge mixture to obtain the sodium pyrophosphate modified water purification sludge / zeolite composite adsorbent. The adsorbent is used for adsorption treatment of ammonia-nitrogen wastewater, and the ammonia-nitrogen removal rate is high.

Description

technical field [0001] The invention belongs to the technical field of adsorption water treatment, and in particular relates to a sodium pyrophosphate modified water purification sludge / zeolite composite adsorbent for treating ammonia nitrogen in water, a preparation method and application thereof. Background technique [0002] Along with the needs of tap water in people's life and production, the water supply capacity of tap water plants is increasing day by day, and the output of water purification sludge is also increasing. In addition, the content of toxic substances and organic matter in raw water from rivers and lakes has increased sharply, the water quality has been declining, and the quality of sludge discharged from waterworks has also become worse and worse. If the water purification sludge is directly discharged into the nearby water body, not only will the river channel be silted up, the height of the river bed will rise, and it will cause serious damage to flood...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/30C02F1/28C02F101/16
CPCB01J20/16C02F1/281C02F2101/16
Inventor 王东田罗书舟魏杰
Owner SUZHOU UNIV OF SCI & TECH
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