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Electric fossil filter material for sewage dephosphorization as well as preparation method and application thereof

A fossil and filter material technology, applied in the field of electro-fossil filter material for phosphorus removal in sewage and its preparation, can solve the problems of secondary pollution of aquatic organisms, difficult to find conditions, and difficult recovery of adsorbents, etc., and achieve high-efficiency phosphorus removal effect, preparation method Simple, the effect of increasing the phosphorus removal effect

Pending Publication Date: 2021-03-02
UNIVERSAL ENVIROMENTAL PROTECTION EQUIP YIXING CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biochemical method is usually activated sludge method, and it can also be used to separate phosphorus after ingesting algae, or to cultivate iron bacteria to precipitate ferric phosphate, etc., but these methods are limited by C / N, C / P, sunlight and other conditions. It is difficult to remove phosphorus continuously and effectively: Biological methods such as cultivating algae-eating insects have obvious effects, but the algae are eaten up and the insects die, which is unsustainable. There are also seasonal problems, and aquatic organisms will cause secondary pollution due to decay; natural treatment The use of wetlands or artificial wetlands, soil adsorption and infiltration, etc., has good effects, but it needs to be well managed and the conditions are difficult to find; the adsorption method has the characteristics of small footprint and simple process, but this type of method is costly and troublesome to operate. Recycling is difficult

Method used

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  • Electric fossil filter material for sewage dephosphorization as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 100g of powdered activated carbon into the potassium permanganate solution with a concentration of 1g / ml, completely immerse the activated carbon powder in the potassium permanganate solution, and carry out surface oxidation at 70°C for 3 hours; Wash with deionized water until the pH is neutral;

[0027] (2) Add 100g of urea to 200ml of deionized water, stir evenly to obtain an aqueous urea solution, add 20g of surface-oxidized activated carbon to 150g of aqueous urea, and react under the assistance of microwaves. The microwave power is 800W, and the reaction temperature is 80°C. The time is 2h; after the reaction is completed, filter, and dry the solid in a vacuum oven at 120°C for 24h;

[0028] (3) The dried product was calcined at a high temperature of 1200°C for 3 hours under a nitrogen protective atmosphere to obtain a modified activated carbon.

Embodiment 2

[0030] A method for preparing an electrochemical filter material for dephosphorization of sewage, comprising the following steps:

[0031] (1) Add 10g of iron powder into 50g of deionized water, ultrasonically disperse evenly to form a uniform mixed slurry, then add the mixed slurry into a ball mill for mechanical ball milling; in the process of mechanical ball milling, use large balls and small balls For the mixing method, the diameter of the large ball is 20mm, the diameter of the small ball is 10mm, the ball milling speed is 600rpm, the ball milling time is 8h, and the ball-to-material ratio is 20:1.

[0032] (2) Add 50 g of the modified activated carbon powder prepared in Example 1 to the ball-milled material, and heat and react at 80° C. for 5 h under microwave-assisted conditions; after the reaction, the resulting product passes through a 200-300 mesh sieve;

[0033] (3) Add 20ml of calcium titanate aqueous solution with a concentration of 0.5mol / L to the sieved product ...

Embodiment 3

[0036] A method for preparing an electrochemical filter material for dephosphorization of sewage, comprising the following steps:

[0037] (1) Add 10g of iron powder into 50g of deionized water, ultrasonically disperse evenly to form a uniform mixed slurry, then add the mixed slurry into a ball mill for mechanical ball milling; in the process of mechanical ball milling, use large balls and small balls For the mixing method, the diameter of the large ball is 20mm, the diameter of the small ball is 10mm, the ball milling speed is 700rpm, the ball milling time is 8h, and the ball-to-material ratio is 30:1.

[0038] (2) Add 50 g of the modified activated carbon powder prepared in Example 1 to the ball-milled material, and heat and react at 80° C. for 5 h under microwave-assisted conditions; after the reaction, the resulting product passes through a 200-300 mesh sieve;

[0039] (3) To the product after sieving, 20ml of calcium titanate aqueous solution with a concentration of 1.0mo...

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Abstract

The invention discloses an electric fossil filter material for sewage dephosphorization and a preparation method thereof, and belongs to the technical field of sewage treatment. In the preparation process of the electric fossil filter material, the modified activated carbon is used as a carrier to load a magnetic metal material and a transition metal material, so that the phosphorus removal effectof the electric fossil filter material is improved. The electric fossil filter material disclosed by the invention not only has an efficient phosphorus removal effect, but also can be repeatedly usedfor multiple times, and for sewage with higher phosphorus concentration content, the electric fossil filter material is repeatedly used for five times, and the phosphorus removal efficiency is 90% orabove; for sewage with low phosphorus concentration content, the electrofossil filter material is repeatedly used for 5 times, and the phosphorus removal rate is 95% or above; and cost can be greatlysaved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an electrofossil filter material for phosphorus removal in sewage, a preparation method and application thereof. Background technique [0002] With the development of social economy and the acceleration of urban construction, the phosphorus pollution in domestic sewage is becoming more and more serious, which in turn brings about the problem of eutrophication in water bodies. Therefore, in the process of dealing with the increasingly serious problem of eutrophication in water bodies, sewage removal Phosphorus has become a very important research direction. Phosphorus removal methods include biochemical, biological, and adsorption methods. The biochemical method is usually activated sludge method, and it can also be used to separate phosphorus after ingesting algae, or to cultivate iron bacteria to precipitate ferric phosphate, etc., but these methods are lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/463C02F101/10
CPCC02F1/463C02F2209/18C02F2101/105
Inventor 张铭尹邵华平胡志坚邵渊峰
Owner UNIVERSAL ENVIROMENTAL PROTECTION EQUIP YIXING CITY
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