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Ferrate water purifying agent and preparation method thereof

A technology of ferrate and water purifying agent, which is applied in the direction of oxidation water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of unacceptable cost of ferrate use, achieve the elimination of instability, prolong life, The effect of reducing the speed of failure

Active Publication Date: 2015-01-21
广东慧信环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to being easily reduced, ferrate is unacceptable in terms of usage cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0036] Take the liquid ferrate prepared by the conventional method, add 15-100g / L solution A and solution B 15-100g / L successively, filter and dry to obtain a ferrate water purifying agent of the present invention. Wherein, A solution and B solution concentration are in embodiment 1-8:

[0037] A solution and B solution concentration in the embodiment 1-8 of table 1

[0038] Example

A solution (g / L)

B solution (g / L)

1

15

15

2

25

50

3

45

30

4

65

40

5

70

60

6

80

70

7

90

80

8

100

100

[0039] The compositions of solution A solute and B solution solute are respectively in weight ratio (taking the total weight of solute as 100%):

[0040] The composition of A solution solute in table 2 embodiment 1-8:

[0041]

K 2 SO 4 (%)

Na 2 SiO 3 (%)

Na 2 al 2 o 4 (%)

KNO 3 (%)

Example 1

15

40 ...

Embodiment 2

[0053] The preparation method of embodiment 2 is:

[0054] 1) Dilute or concentrate the liquid ferrate to a concentration of 30g / L, and adjust the pH to 9;

[0055] 2) Stir the ferrate solution uniformly at a constant temperature of 60 rpm at 60°C for 6 minutes;

[0056] 3) According to the volume ratio of ferrate: A solution = 55:1, drop A solution into the liquid ferrate;

[0057] 4) According to the volume ratio of ferrate: B solution = 80:1, drop B solution into the liquid ferrate;

[0058] 5) Stir the obtained solution at a speed of 50rpm for 5min;

[0059] 6) Stir the obtained solution at a speed of 1 rpm for 20 minutes;

[0060] 7) Filter and take the filter residue to dry.

Embodiment 3

[0061] The preparation method of embodiment 3 is:

[0062] 1) Dilute or concentrate the liquid ferrate to a concentration of 50g / L, and adjust the pH to 8;

[0063] 2) Stir the ferrate solution uniformly at a constant temperature of 100 rpm at 50°C for 3 minutes;

[0064] 3) According to the volume ratio of ferrate: A solution = 60:1, drop A solution into the liquid ferrate;

[0065] 4) According to the volume ratio of ferrate: B solution = 100:1, drop B solution into the liquid ferrate;

[0066] 5) Stir the obtained solution at a speed of 80rpm for 4min;

[0067] 6) Stir the obtained solution at a speed of 25rpm for 10min;

[0068] 7) Filter and take the filter residue to dry.

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PUM

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Abstract

The invention discloses a novel ferrate water purifying agent which is prepared by the following steps: after conventional liquid ferrate is prepared, adding a 15-100g / L solution A and a 15-100g / L solution B, filtering, and drying to obtain the finished product. The solute of the solution A is composed of two or three of K2SO4, Na2SiO3 and KNO3, and Na2Al2O4, and is specifically composed of at most 20 wt% of K2SO4, at most 40 wt% of Na2SiO3, at most 30 wt% of KNO3 and 10-50 of Na2Al2O4, totaling 100 wt%; and the solute of the solution B is composed of one or two or three of Na2Al2O4, KNO3 and HCl, and AlCl3, and is specifically composed of at most 50 wt% of Na2Al2O4, at most 30 wt% of KNO3, at most 50 wt% of HCl and 20-60 wt% of AlCl3, totaling 100 wt%. The invention also discloses a preparation method of the ferrate water purifying agent. On the premise of keeping the water purifying capacity unchanged, the ferrate water purifying agent overcomes the defect of unstable ferrate in the prior art, so that the half expiration date is prolonged from several days to more than three months, thereby implementing practicality and industrialization of ferrate.

Description

technical field [0001] The invention relates to a water purifying agent and a preparation method thereof, in particular to a ferrate water purifying agent and a preparation method thereof. Background technique [0002] Ferrate (sodium, potassium) is a hexavalent iron salt with strong oxidizing properties and is widely used in water treatment. Dissolving ferrate in water can release a large amount of atomic oxygen, which can effectively kill bacteria and viruses in water. While killing germs and viruses, ferrate itself is reduced to new ecological Fe(OH) 3 ——This is a high-quality inorganic flocculant that can efficiently remove fine suspended solids in water. Experiments have proved that due to the strong combined action of oxidation and flocculation, the disinfection and decontamination effect of ferrate is better than that of chlorine-containing disinfectants and permanganate. More importantly, it does not produce any harmful substances to the human body during the whol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/52
Inventor 龙德顺谭铭卓
Owner 广东慧信环保有限公司