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Mineral phosphate removing agent and preparation method thereof

A technology for removing phosphorus and minerals, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as pollution and secondary pollution

Inactive Publication Date: 2017-08-15
成都原端新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the chemical reaction of this kind of chemical products, other chemical substances will be added to the sewage, thus causing secondary pollution. That is to say, although these chemical products have solved the pollution problem of phosphorus in water, they have caused new pollution problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the present embodiment, the mineral dephosphorization agent includes the following components in mass percent: 1% SiO 2 , 10% Al 2 o 3 , 3% Fe 2 o 3 and 86% water.

[0024] The mineral phosphorus removal agent is prepared by the following method, and the specific steps include:

[0025] S1. Use a mineral product from a certain place in Guangxi to prepare a phosphorus removal agent. The mineral product contains SiO 2 、Al 2 o 3 and Fe 2 o 3 The mass ratio is 20:15:25. Crush and grind mineral products into 150-mesh mineral powder, and the mineral products are high-iron bauxite, hematite or red mud;

[0026] S2. According to the solid-liquid ratio of 1:3, the mineral powder is mixed with the acid solution with a concentration of 10% to obtain ore pulp; the acid solution is sulfuric acid, hydrochloric acid or a mixed acid of sulfuric acid and hydrochloric acid;

[0027] S3. under the condition of 50 DEG C, the slurry was stirred for 1 hour at a speed of 50 rpm ...

Embodiment 2

[0032] In the present embodiment, the mineral dephosphorization agent comprises the following components in mass percent: 2% SiO 2 , 8% Al 2 o 3 , 2% Fe 2 o 3 and 88% water.

[0033] The mineral phosphorus removal agent is prepared by the following method, and the specific steps include:

[0034] S1. Use a mineral product from a certain place in Hainan to prepare a phosphorus removal agent. The mineral product contains SiO 2 、Al 2 o 3 and Fe 2 o 3 The mass ratio is 22:16:26. Mineral products are crushed and ground into 200-mesh mineral powder; the mineral products are high-iron bauxite, hematite or red mud;

[0035] S2. According to the solid-to-liquid ratio of 1:3, the mineral powder is mixed with an acid solution with a concentration of 15% to obtain an ore pulp; the acid solution is sulfuric acid, hydrochloric acid or a mixed acid of sulfuric acid and hydrochloric acid;

[0036] S3. Under the condition of 55°C, stir the slurry for 1.5 hours at a speed of 55 rpm t...

Embodiment 3

[0041] In the present embodiment, the mineral dephosphorization agent comprises the following components in mass percent: 1.5% SiO 2 , 9% Al 2 o 3 , 3% Fe 2 o 3 and 86.5% water.

[0042] The mineral phosphorus removal agent is prepared by the following method, and the specific steps include:

[0043] S1. A phosphorus removal agent was prepared by using a certain mineral product in Guizhou, and SiO was contained in the mineral product 2 、Al 2 o 3 and Fe 2 o 3 The mass ratio is 24:17:27. Mineral products are crushed and ground into 200-mesh mineral powder; the mineral products are high-iron bauxite, hematite or red mud;

[0044] S2. According to the solid-to-liquid ratio of 1:4, the ore powder is mixed with an acid solution with a concentration of 20% to obtain an ore slurry; the acid solution is sulfuric acid, hydrochloric acid or a mixed acid of sulfuric acid and hydrochloric acid;

[0045] S3. Under the condition of 60° C., the slurry was stirred for 2 hours at a s...

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Abstract

The invention discloses a mineral phosphate removing agent and a preparation method thereof. The mineral phosphate removing agent is prepared from the following components in percentage by mass: 1 to 3 percent of SiO2, 8 to 10 percent of Al2O3, 2 to 4 percent of Fe2O3, and 86 to 88 percent of water. The method for preparing the mineral phosphate removing agent comprises the steps of S1, smashing and grinding mineral products into 150 to 200-mesh mineral powder; S2, mixing the mineral powder and a 10 to 20 % acid liquor according to the solid-to-liquid ratio being 1 to (3 to 5) to obtain an ore pulp; S3, at the temperature of 50 to 70 DEG C, stirring the ore pulp for 1 to 3 hours at the speed of 50 to 70 r / min to obtain the liquid phosphate removing agent. When the mineral phosphate removing agent is used for removing phosphate, phosphorus in the water and the liquid phosphate removing agent react to form a solid precipitate, and the phosphate is removed through a solid-liquid separation method, so that secondary pollution cannot be caused.

Description

technical field [0001] The invention relates to the technical field of phosphorus removal agent preparation, in particular to a mineral phosphorus removal agent and a preparation method thereof. Background technique [0002] Phosphorus is the main pollutant in sewage and one of the discharge indicators that must be measured. It is the main substance of eutrophication in water bodies and the main reason for the growth of cyanobacteria and green algae in closed water bodies such as lakes. Phosphorus discharge index is very low, the first grade A standard value is 0.5 mg / L, so it is difficult for many sewage to meet the standard after biochemical treatment stage, which is the reason why many units use phosphorus removal agent to supplement phosphorus removal. [0003] Phosphorus removal agent is a supplementary agent when the sewage is still not up to standard after biochemical treatment. Its function is to remove total phosphorus while coagulating and removing turbidity, so a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F101/10
CPCC02F1/5236C02F2101/105
Inventor 李明顺
Owner 成都原端新材料科技有限公司
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