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Waste water dephosphorization absorption material, and preparation method and application thereof

A technology for adsorbing materials and wastewater, which is applied in chemical instruments and methods, adsorbed water/sewage treatment, water pollutants, etc. Market competitiveness, good application prospects, and high phosphorus removal efficiency

Inactive Publication Date: 2016-08-31
江苏广植科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical method requires a large amount of coagulant, which is costly and may cause secondary pollution
The biological method mainly uses the principle of anaerobic phosphorus release and aerobic phosphorus uptake by phosphobacteria in the aerobic activated sludge of urban sewage treatment plants, and removes it through the alternate operation of aerobic and anaerobic processes, but the process stability is poor, and the total effluent The phosphorus concentration is unstable, and the phosphorus removal effect cannot meet the increasingly stringent wastewater discharge standards, and the phosphorus concentration in the effluent is 10-55 times that of the second-class standard for lake water. Therefore, stricter phosphorus removal is required for the effluent of the sewage treatment plant to ensure Ecological environment of water body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The phosphorus removal adsorption material is prepared by using shells and attapulgite as raw materials, and the raw material formula is as follows in terms of mass percentage: 75% of shells and 25% of attapulgite.

[0020] Preparation steps:

[0021] (1) Pretreatment: Take shells, burn them at 200°C and keep them warm for 2 hours, then grind and crush them, and pass through a 100-mesh sieve; take attapulgite, crush and grind them, and pass through a 100-mesh sieve;

[0022] (2) Mixing: Take the shells pretreated in step (1) and mix the attapulgite after grinding and sieving to obtain a mixture; add 200mL of water to each 1kg of the mixture, and mix evenly to obtain a mud-like material;

[0023] (3) Granulation and drying: Granulate the muddy material obtained in step (2) to obtain 5mm particles, and dry at 50°C for 4 hours until the water content is less than 5%, to obtain the adsorption material for phosphorus removal of product wastewater.

[0024] Performance of wa...

Embodiment 2

[0027] The phosphorus removal adsorption material is prepared by using shells and attapulgite as raw materials, and the raw material formula is as follows in terms of mass percentage: 70% of shells and 30% of attapulgite.

[0028] Preparation steps:

[0029] (1) Pretreatment: Take shells, heat them at 300°C for 1 hour, grind and crush them, and pass through a 100-mesh sieve; take attapulgite, crush and grind them, and pass through a 100-mesh sieve;

[0030] (2) Mixing: Take the shells pretreated in step (1) and mix the attapulgite after grinding and sieving to obtain a mixture; add 450mL of water to each 1kg of the mixture, and mix evenly to obtain a muddy material;

[0031] (3) Granulation and drying: Granulate the muddy material obtained in step (2) to obtain 10mm particles, and dry at 60°C for 3 hours until the water content is less than 5%, to obtain the product wastewater phosphorus removal adsorption material.

[0032] Put the formed waste water dephosphorization adsorp...

Embodiment 3

[0036] The phosphorus removal adsorption material is prepared by using shells and attapulgite as raw materials, and the raw material formula is as follows in terms of mass percentage: 65% of shells and 35% of attapulgite.

[0037] Preparation steps:

[0038] (1) Pretreatment: Take shells, burn them at 400°C for 1 hour, grind and crush them, and pass through a 100-mesh sieve; take attapulgite, crush and grind them, and pass through a 100-mesh sieve;

[0039] (2) Mixing: Take the shells pretreated in step (1) and mix the attapulgite after grinding and sieving to obtain a mixture; add 300mL of water to each 1kg of the mixture, and mix evenly to obtain a muddy material;

[0040] (3) Granulation and drying: Granulate the muddy material obtained in step (2) to obtain 30mm particles, and dry at 55°C for 4 hours until the water content is less than 5%, to obtain the product wastewater phosphorus removal adsorption material.

[0041] Performance of wastewater phosphorus removal materi...

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PUM

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Abstract

The invention relates to a waste water dephosphorization absorption material, and a preparation method and application thereof, and belongs to the technical field of waste water treatment. Shells are subjected to heat treatment activation, and are then mixed with attapulgite according to a certain proportion to be made into granular test specimens; the granular test specimens are proportionally added into waste water to achieve the dephosphorization effect. Compared with the prior art, the waste water dephosphorization absorption material has the advantages that the characteristics of wide resources of shells and attapulgite, high porosity, decoloration, adsorption and the like are sufficiently used; the process is simple; the preparation cost is low; the dephosphorization efficiency is high; waste materials can be changed into valuable materials; good application prospects are realized.

Description

technical field [0001] The invention relates to a waste water phosphorus removal adsorption material and its preparation method and application, belonging to the technical field of waste water treatment. Background technique [0002] With the continuous development of industry and society, a large amount of industrial waste water and domestic sewage rich in nitrogen and phosphorus are discharged randomly, and at the same time, the extensive use of nitrogen and phosphorus fertilizers has made my country's water pollution increasingly serious, and eutrophication of rivers and water bodies has occurred year by year. occur. Taking Wuxi as an example, the eutrophication of Taihu Lake in 2007 led to a cyanobacteria bloom event, which seriously endangered the normal drinking water of citizens. Studies have shown that when the total phosphorus concentration in water is higher than 0.05 mg / L, appropriate environmental conditions can cause excessive growth of aquatic plants such as al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/28C02F1/28B01J20/30C02F101/10C02F101/20
CPCB01J20/12B01J20/043B01J20/28016C02F1/281C02F2101/105C02F2101/20
Inventor 韩鹏周新朱春燕
Owner 江苏广植科技有限公司
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