Dephosphorization and denitrification integrated material prepared based on battering method and preparation method thereof

A technology for denitrification and paste coating, applied in chemical instruments and methods, methods for granulating raw materials, inorganic chemistry, etc., can solve problems such as single and single materials, reduce recycling costs, alleviate eutrophication, and realize The effect of resource

Inactive Publication Date: 2010-04-14
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there are extensive studies on denitrification materials and phosphorus removal materials at home and abroad, but most of them are limited to a single material and a single purpose, involving the use of industrial waste, adding suitable and appropriate amo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0053] Example 1. The best ratio implementation method,

[0054] The total mass of the composite material is 212g, including 200g 0.35cm±0.05cm zeolite particles, 1g steel slag, 6g fly ash, 1g zeolite powder, 4g binder, and 10mL water.

[0055] Wash and soak the zeolite particles, put 2 g of the binder and the washed and soaked zeolite particles into a drum granulator, mix them evenly, and complete the initial slurrying in about 15 minutes.

[0056] Put fly ash, steel slag, zeolite powder and 2 g of binder into the drum granulator and mix evenly. Add the zeolite particles after initial coating and mix well. Add 10ml of water to the uniformly mixed gelling material in small amounts, and granulate into it in about 30 minutes. When the room temperature is greater than 5℃, cover the shaped sphere with a sack for 24h, and spray it for 6h after molding for curing; sprinkle water to keep the sphere moist , The curing period is about 2 days.

Example Embodiment

[0057] Example 2. The total mass of the composite material is 161.5g, of which 150g 0.35±0.05cm zeolite particles, 1g steel slag, 6g fly ash, 1g zeolite powder, 3.5g binder, and 10mL water.

[0058] Wash and soak the zeolite particles, put 1.5 g of the binder and the washed and soaked zeolite particles into a drum granulator, mix them evenly, and complete the initial slurrying in about 15 minutes.

[0059] Put fly ash, steel slag, zeolite powder and 2 g of binder into the drum granulator and mix evenly. Add the zeolite particles after initial coating and mix well. Add 10ml of water in small quantities to the uniformly mixed cementitious material, granulate and shape in about 30 minutes. When the room temperature is greater than 5℃, cover the molded sphere with a straw curtain for 24h, and spray it for curing after 8h of molding; water to maintain The sphere is wet and the curing period is about 3 days.

Example Embodiment

[0060] Example 3. The total mass of the composite material is 313 g, including 300 g of 0.35±0.05 cm zeolite particles, 1 g of steel slag, 6 g of fly ash, 1 g of zeolite powder, 5 g of binder, and 10 mL of water.

[0061] Wash and soak the zeolite particles, put 3 g of the binder and the washed and soaked zeolite particles into the drum granulator, mix uniformly, and complete the initial slurrying in about 15 minutes.

[0062] Put fly ash, steel slag, zeolite powder and 2 g of binder into the drum granulator and mix evenly. Add the zeolite particles after initial coating and mix well. Add 10ml of water in small batches to the uniformly mixed gelling material, and granulate it for about 30 minutes.

[0063] Effect after the implementation of the best ratio: The static test results show that at 25℃, the theoretical saturated adsorption capacity of the integrated material for nitrogen and phosphorus removal is 5.77mg / g, and the theoretical saturated adsorption capacity for phosphate is...

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Abstract

A dephosphorization and denitrification integrated material prepared based on a battering method mainly consists of the following materials according to mass ratio: 2 to 4 percent of fly ash, 0.3 to 0.7 percent of steel slag, 0.3 to 0.7 percent of zeolite powder, 1 to 3 percent of binder, and the balance of zeolite particles. Aiming at problems existing in the current sewage and wastewater treatment, the invention provides a composite material with dephosphorization and denitrification functions simultaneously, and a preparation method thereof; and compared with the existing sewage and wastewater treatment materials, the novel composite material not only can protect the environment and realize the reclamation of wastes, but also can obtain good social and economic benefits.

Description

technical field [0001] The invention relates to a composite water treatment material for phosphorus and nitrogen removal in the technical field of water pollution prevention and control and a preparation method thereof. Background technique [0002] The eutrophication of water bodies is a worldwide problem. A large number of research results and facts show that nitrogen and phosphorus are the main factors leading to eutrophication of water bodies. At the same time, phosphorus is also an indispensable nutrient element for life, and it is a resource that is difficult to regenerate and is increasingly exhausted. [0003] At present, the removal methods of nitrogen and phosphorus in sewage mainly include biological and chemical methods. The biological process is complex and the effluent stability is poor; although the chemical process is effective, the denitrification and phosphorus removal agents used are mostly industrial products such as lime, aluminum salt, iron salt, ferro...

Claims

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Application Information

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IPC IPC(8): B01J20/16B01J20/32B01J2/00C02F1/28
Inventor 王世和刘焱朱丹张维周军卓运红
Owner SOUTHEAST UNIV
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