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Bentonite particles, bentonite particle adsorption column and method for removing phosphorus in natural water body

The technology of bentonite and adsorption column is applied in the field of water treatment, which can solve the problem of high cost of adsorbent, and achieve the effects of facilitating separation from water, enhancing fertilizer and water retention performance, and reducing phosphorus content.

Inactive Publication Date: 2016-07-20
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphorus removal by adsorption method is currently the most researched and applied method. In order to solve the problem of high cost of adsorbent in the existing adsorption method and the problem of outlet after adsorbent is saturated, it is very necessary to provide a method that can effectively adsorb phosphorus in wastewater, and A method that can recycle the adsorbent

Method used

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  • Bentonite particles, bentonite particle adsorption column and method for removing phosphorus in natural water body
  • Bentonite particles, bentonite particle adsorption column and method for removing phosphorus in natural water body
  • Bentonite particles, bentonite particle adsorption column and method for removing phosphorus in natural water body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Mix bentonite and starch at a weight ratio of 100:4, add water and mix evenly to form small balls with a particle size of 3 mm, dry the small balls at a constant temperature of 110 degrees Celsius for 1.5 hours, and dry them at 520 degrees Celsius Calcined for 4h to make granular adsorbent.

[0037] 2) The granular adsorbent that 6g step 1) is obtained is modified in the calcium chloride solution that the concentration of 100mL is 0.09mol / L, and the modification process is carried out in the shaker, and the modification time is 50min, and the shaker speed is Modified at 100r / min, washed with pure water after modification, and modified bentonite particles 1 were obtained.

Embodiment 2

[0039] 1) Mix bentonite and starch in a weight ratio of 100:2, add water and mix evenly to form small balls with a particle size of 5mm, dry the small balls at a constant temperature of 90 degrees Celsius for 2.5 hours, and dry them at 450 degrees Celsius Calcined for 6h to make granular adsorbent.

[0040] 2) The granular adsorbent obtained in 4g step 1) is modified in the calcium chloride solution of 0.12mol / L in the concentration of 100mL, the modification process is carried out in the shaker, the modification time is 30min, and the shaker speed is Modified at 140r / min, washed with pure water after modification, modified bentonite particles 2.

Embodiment 3

[0042] 1) Mix bentonite and starch in a weight ratio of 100:3, add water and mix evenly to form small balls with a particle size of 4mm, dry the small balls at a constant temperature of 100 degrees Celsius for 2 hours, and dry them at 500 degrees Celsius Calcined for 5h to make granular adsorbent.

[0043] 2) The granular adsorbent that 5g of step 1) is obtained is modified in the calcium chloride solution that the concentration of 100mL is 0.10mol / L, and the modification process is carried out in the shaker, and the modification time is 40min, and the shaker speed is Modified at 120r / min, washed with pure water after modification, and modified bentonite particles 3 were obtained.

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Abstract

The invention belongs to the technical field of water treatment, and particularly relates to bentonite particles, a bentonite particle adsorption column and a method for removing phosphorus in a natural water body. Bentonite is modified to obtain the modified bentonite particles, the modified bentonite particles are used as a filler to obtain the bentonite particle adsorption column, and phosphorus in the water body is removed by the bentonite particle adsorption column. The method which has the advantages that phosphorus in water can be effectively adsorbed, an adsorption agent can be recycled, operation is easy, and safety and reliability are achieved is provided for the problems that in an existing adsorption method, the cost for removing phosphorus in the natural water body is high, and following treatment of an adsorption agent is difficult.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a bentonite particle for removing phosphorus in a natural water body, a bentonite particle adsorption column and a method. Background technique [0002] With the development of my country's economy and the improvement of industrialization level, the problem of water pollution is becoming more and more serious. As an important part of urban functional bodies, urban natural water bodies often become the recipients of domestic sewage and even industrial wastewater. Due to the high content of nitrogen and phosphorus in these domestic sewage and industrial wastewater, the nutrient load of the water body exceeds the standard after receiving various wastewater, resulting in a large number of algae in the water body, which in turn leads to eutrophication of the water body and accelerates the aging of the water body. [0003] Phosphorus is the limiting factor of water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/12B01J20/30B01D15/22C02F1/28C05G3/04C02F101/10C02F101/16C05G3/80
CPCB01D15/22B01J20/12B01J20/24C02F1/288C02F2101/105C02F2101/16C05B17/00C05G3/80C05D9/00
Inventor 王敏付锟王博许峰王思梦
Owner HUBEI UNIV
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