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A kind of polyaluminum chloride phosphorus removal filler and preparation method thereof

A technology of polyaluminum chloride and polyaluminum chloride, which is applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of losing the phosphorus removal function, and achieve fast sedimentation and adsorption Efficient and stable performance, efficient and stable purification effect

Active Publication Date: 2017-04-12
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phosphorus removal mechanism of the above-mentioned invention patent mainly relies on physical and chemical adsorption. After the adsorption is saturated, the packing will lose the phosphorus removal function.

Method used

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  • A kind of polyaluminum chloride phosphorus removal filler and preparation method thereof
  • A kind of polyaluminum chloride phosphorus removal filler and preparation method thereof
  • A kind of polyaluminum chloride phosphorus removal filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 Phosphorus removal filler treatment effect of eutrophication landscape water

[0026] After mixing and stirring polyaluminum chloride (PAC), high-grade cement, construction glue and water according to the ratio (weight ratio) in Table 1, press it into solid particles with a particle size of 1.0-3.0cm under a pressure of 0.3-0.5MPa , and dried to obtain the finished product of filling.

[0027] Raw material ratio table (weight ratio) used for three kinds of filler products in table 1

[0028]

[0029] The structure of the test device is as figure 1 As shown, it includes: high-level water tank (effective volume 25L), column filled with phosphorus removal packing (filling height is 50cm, diameter is 9cm); water inlet hose, spring clip for controlling flow. Hydraulic load is an important factor affecting the process effect. This case studies the phosphorus removal effect of different fillers under different hydraulic loads. Three hydraulic loads are design...

Embodiment 2

[0032] Embodiment 2 Phosphorus removal filler treatment effect of domestic sewage

[0033]Mix and stir polyaluminum chloride (PAC), high-grade cement, construction glue and water according to the proportions in Table 1 (weight ratio), press them into solid particles with a particle size of 1.0-3.0 cm, and dry them to obtain finished fillers.

[0034] The structure of the test device is as figure 1 As shown, it includes: high-level water tank (effective volume 25L), column filled with phosphorus removal packing (filling height is 50cm, diameter is 9cm); water inlet hose, spring clip for controlling flow. Hydraulic load is an important factor affecting the process effect. This case studies the phosphorus removal effect of different fillers under different hydraulic loads. Three hydraulic loads are designed respectively, 0.5m 3 / m 2 d -1 , 1.0m 3 / m 2 d -1 , 2.0m 3 / m 2 d -1 , the corresponding water flow rates are: 3.25L / d, 6.5L / d and 13L / d.

[0035] image 3 It is a ...

Embodiment 3

[0037] Example 3 Comparison of newly developed filler and common volcanic rock filler for domestic sewage treatment

[0038] Polyaluminum chloride (PAC), high-grade cement, construction glue and water are mixed and stirred according to the proportion of filler B in Table 1 (weight ratio), and then pressed into solid particles with a particle size of 1.0 to 3.0 cm, and dried to obtain the filler finished product.

[0039] When the concentration of total phosphorus in the influent is 2.8-3.2mg / L (average value 2.9mg / L), the newly developed filler B can withstand a hydraulic load of 0.5m 3 / m 2 d -1 The removal efficiency of phosphorus is the best, with an average removal rate of 95.29%, and the average concentration of total phosphorus in the effluent water is 0.17mg / L, which meets the Class III water standard of "Environmental Quality Standards for Surface Water" (GB3838-2002).

[0040] When the total phosphorus concentration of the influent is 2.8-3.2mg / L (average value 2.9...

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Abstract

The invention provides novel polymeric aluminum chloride dephosphorizing filler and a preparation method thereof. The novel polymeric aluminum chloride dephosphorizing filler comprises the following components: powdery polymeric aluminum chloride, high-quality cement, water and building adhesive, wherein the weight ratio of the polymeric aluminum chloride and the high-quality cement is (90:5)-(60:35), the balance is the building adhesive and the water, and the weight ratio of the building adhesive and the water is 1:4. The preparation method comprises the following steps of mixing and stirring needed materials according to the weight ratio; pressing the mixture into a solid granule with the grain diameter of 1.0-3.0 cm at the pressure of 0.3-0.5 MPa; airing to obtain a finished filler product. According to the novel polymeric aluminum chloride dephosphorizing filler, an obtained product granule is high-efficiency and stable in phosphorus adsorption property due to raw material controllability and proportion stability, can be widely applied to the dephosphorization effect on intensively treating filler systems, namely an artificial wetland, a biological filter, soil filtrator and the like and provides a new material and treatment idea for the pollution control of an eutrophic water body.

Description

technical field [0001] The invention relates to the fields of environmental engineering and sewage treatment engineering, in particular to a preparation method of polyaluminum chloride phosphorus removal filler. Background technique [0002] Eutrophication of water bodies will lead to frequent outbreaks of cyanobacteria blooms, deterioration of water quality, massive fish kills, etc., seriously threatening water ecological security, economic development and social stability, and is one of the major environmental crises facing the world today. The eutrophication of lakes in my country is particularly prominent. In 2006, among the 27 key lakes controlled by the state, 18 lakes had water quality of Class V or inferior to Class V. In 2007, the Taihu Lake cyanobacteria event caused 5 million people in Wuxi to drink water and There is a severe shortage of domestic water. Controlling eutrophication of water body is a major environmental problem we are facing. The key to eutrophicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/58
CPCB01J20/02B01J20/0248C02F1/281C02F1/5236C02F1/5245C02F3/00C02F3/32C02F2003/001C02F2101/105
Inventor 李旭东纪婧邱江平王进孙鑫
Owner SHANGHAI JIAOTONG UNIV
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