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Efficient sewage dephosphorizing flocculating agent and preparation method thereof

A flocculant and sewage technology, which is applied in the field of high-efficiency sewage phosphorus removal flocculants and its preparation, can solve the problems that biological phosphorus removal technology is difficult to meet the requirements of phosphorus removal indicators, and achieve the effect of simple preparation method and strong operability

Inactive Publication Date: 2016-04-20
叶君芝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The biological denitrification technology in the existing urban sewage treatment technology can generally meet the requirements of the nitrogen removal index, but the biological phosphorus removal technology is difficult to meet the requirements of the phosphorus removal index

Method used

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  • Efficient sewage dephosphorizing flocculating agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Preparation of phosphorus removal flocculant

[0021] Raw material ratio:

[0022] Water, 35 parts; Potassium perchlorate, 6 parts; Sodium silicate, 25 parts; Ferrous sulfate, 30 parts; The mixture of aluminum sulfate and magnesium sulfate, 40 parts; Wherein, the weight ratio of aluminum sulfate and magnesium sulfate is 4:1 .

[0023] Preparation:

[0024] (1) Prepare metal salt mixed solution: under normal temperature and pressure, ferrous sulfate, aluminum sulfate and magnesium sulfate are mixed with water, stirred and mixed to form metal salt mixed solution;

[0025] (2) Adjust the pH value of the metal salt mixed solution: in the prepared metal salt mixed solution, slowly add concentrated sulfuric acid while stirring, so that all metal sulfates are completely dissolved, and adjust its pH value to 1.5;

[0026] (3) metal oxidation reaction: under normal temperature and pressure, slowly add potassium perchlorate to carry out oxidation reaction while s...

Embodiment 2

[0028] Embodiment 2: Preparation of phosphorus removal flocculant

[0029] Raw material ratio:

[0030] Water, 30 parts; Potassium perchlorate, 4 parts; Sodium silicate, 20 parts; Ferrous sulfate, 25 parts; The mixture of aluminum sulfate and magnesium sulfate, 35 parts; Wherein, the weight ratio of aluminum sulfate and magnesium sulfate is 3:1 .

[0031] Preparation:

[0032] (1) Prepare metal salt mixed solution: under normal temperature and pressure, ferrous sulfate, aluminum sulfate and magnesium sulfate are mixed with water, stirred and mixed to form metal salt mixed solution;

[0033] (2) Adjust the pH value of the metal salt mixed solution: in the prepared metal salt mixed solution, slowly add concentrated sulfuric acid while stirring, so that all metal sulfates are completely dissolved, and adjust its pH value to 1;

[0034] (3) metal oxidation reaction: under normal temperature and pressure, slowly add potassium perchlorate to carry out oxidation reaction while sti...

Embodiment 3

[0036] Embodiment 3: Preparation of phosphorus removal flocculant

[0037] Raw material ratio:

[0038] Water, 40 parts; Potassium perchlorate, 8 parts; Sodium silicate, 30 parts; Ferrous sulfate, 35 parts; The mixture of aluminum sulfate and magnesium sulfate, 45 parts; Wherein, the weight ratio of aluminum sulfate and magnesium sulfate is 5:1 .

[0039] Preparation:

[0040] (1) Prepare metal salt mixed solution: under normal temperature and pressure, ferrous sulfate, aluminum sulfate and magnesium sulfate are mixed with water, stirred and mixed to form metal salt mixed solution;

[0041] (2) Adjust the pH value of the metal salt mixed solution: in the prepared metal salt mixed solution, slowly add concentrated sulfuric acid while stirring, so that all metal sulfates are completely dissolved, and adjust its pH value to 2;

[0042] (3) metal oxidation reaction: under normal temperature and pressure, slowly add potassium perchlorate to carry out oxidation reaction while sti...

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Abstract

The invention discloses an efficient sewage dephosphorizing flocculating agent and a preparation method thereof. The dephosphorizing flocculating agent is prepared from the following raw materials in parts by weight: 30-40 parts of water, 4-8 parts of potassium perchlorate, 20-30 parts of sodium silicate, 25-35 parts of ferrous sulfate, 35-45 parts of a mixture of aluminum sulfate and magnesium sulfate, wherein the weight ratio of aluminum sulfate to magnesium sulfate is (3-5):1. The prepared dephosphorizing flocculating agent can effectively remove phosphorus in sewage, and can reduce the total suspended substance (SS), the chemical oxygen demand (COD) and the biological oxygen demand (BOD); the preparation method for the dephosphorizing flocculating agent is simple, and strong in operability.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a high-efficiency sewage phosphorus removal flocculant and a preparation method thereof. Background technique [0002] In the mid-1970s and 1980s, most of the urban sewage treatment processes were traditional activated sludge methods, which mainly aimed at removing chemical oxygen demand (COD), and did not have high requirements for nitrogen and phosphorus indicators in the treated effluent. In recent years, urban people generally use washing machines to wash clothes, etc., and use a large amount of phosphorus-containing substances such as washing powder, which not only increases the amount of sewage in cities and towns, but also increases the phosphorus content in sewage. With the development of society and the continuous improvement of people's living standards, the requirements for urban sewage treatment will become higher and higher, and the indicators for phosphorus and nitro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/58
CPCC02F1/5236C02F1/5245C02F2101/105
Inventor 叶君芝
Owner 叶君芝
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