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A kind of compound dephosphorization agent and preparation method thereof

A compound dephosphorization agent and dephosphorization agent technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve problems such as the influence of the use system, and achieve expanded use range and simple use , a wide range of effects

Active Publication Date: 2019-06-11
四川东江化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, iron salts, aluminum salts, etc. are used to remove phosphorus, and the phosphorus removal effect needs to be further improved, and it is often only effective for a single system or only in a specific system, and it will also bring new influences to the system.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] A preparation method of a composite phosphorus removal agent, is characterized in that, comprises the steps:

[0037] Step 1. Add 400-600 parts by mass of water into the enamel reaction kettle, start stirring, slowly add industrial grade sulfuric acid into the reaction kettle, and adjust the pH to 1.0±0.1.

[0038] Step 2. Add 300-400 parts by mass of iron sulfate to the solution in step 1 to completely dissolve it.

[0039] Step 3, adding 80-120 parts by mass of aluminum sulfate to the solution in step 2 to completely dissolve it.

[0040] Step 4, adding 40-60 parts by mass of aluminum chloride to the solution in step 3 to completely dissolve it.

[0041] Step 5. Check the pH of the solution in step 4 to maintain the pH of the solution at 0.5-1.0. If the pH value is greater than 1.0, adjust it to 0.5-1.0 with industrial grade sulfuric acid.

[0042] Step 6. Completely filter the solution in step 5 with a 1200-1800 mesh acid-resistant filter.

[0043] Step 7, the sol...

Embodiment 1

[0046] A preparation method of a composite phosphorus removal agent, is characterized in that, comprises the steps:

[0047] Step 1. Add 500 parts by mass of water into the enamel reaction kettle, start stirring, slowly add industrial grade sulfuric acid into the reaction kettle, and adjust the pH to 1.0.

[0048] Step 2. Add 350 parts by mass of ferric sulfate to the solution in step 1 to completely dissolve it.

[0049] Step 3, adding 100 parts by mass of aluminum sulfate to the solution in step 2 to completely dissolve it.

[0050] Step 4. Add 50 parts by mass of aluminum chloride to the solution in step 3 to completely dissolve it.

[0051] Step 5. Check the pH of the solution in step 4 to maintain the pH of the solution at 0.8.

[0052] Step 6. Completely filter the solution in step 5 with a 1500-mesh acid-resistant filter.

[0053] Step 7, under the condition of 15r / min stirring of the solution filtered in step 6, add one-thousandth of polydimethyldiallylammonium chlori...

Embodiment 2

[0056] A preparation method of a composite phosphorus removal agent, is characterized in that, comprises the steps:

[0057] Step 1. Add 400 parts by mass of water into the enamel reaction kettle, start stirring, slowly add industrial grade sulfuric acid into the reaction kettle, and adjust the pH to 1.1.

[0058] Step 2. Add 300 parts by mass of ferric sulfate to the solution in step 1 to completely dissolve it.

[0059] Step 3, adding 80 parts by mass of aluminum sulfate to the solution in step 2 to completely dissolve it.

[0060] Step 4, adding 40 parts by mass of aluminum chloride to the solution in step 3 to completely dissolve it.

[0061] Step 5. Check the pH of the solution in step 4 to maintain the pH of the solution at 0.5.

[0062] Step 6. Completely filter the solution in step 5 with a 1200-mesh acid-resistant filter.

[0063] Step 7, under the condition of 15r / min stirring of the solution filtered in step 6, add one-thousandth of polydimethyldiallylammonium ch...

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PUM

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Abstract

The invention discloses an efficient compound phosphorus removing agent. Conventional water treatment agents such as iron sulfate, aluminum sulfate and aluminum chloride are taken as raw materials and are mixed with a certain amount of poly dimethyl diallyl ammonium chloride and mass modifier so as to produce the efficient compound phosphorus removing agent under certain process conditions. Compared with the conventional water treatment agents such as iron sulfate, aluminum sulfate and aluminum chloride in use, the efficient compound phosphorus removing agent has the characteristics of high phosphorus removal reaction speed, big alum blossoms, high settling speed and better phosphorus removal effect; and furthermore, the use range is wide, and no new influence is brought to a use system.

Description

technical field [0001] The invention relates to the technical field of phosphorus removal agents, in particular to a composite phosphorus removal agent and a preparation method thereof. Background technique [0002] The eutrophication of the water body will cause algae blooms, the dissolved oxygen in the water body will drop greatly, and the water quality will deteriorate. This phenomenon is more serious in our country and has brought great harm to industry, aquaculture, agriculture and tourism. Excessive phosphorus in water is an important cause of eutrophication in water bodies. Therefore, how to effectively reduce the concentration of phosphorus in sewage is of great significance to eliminate pollution and protect the environment. [0003] At present, phosphorus in wastewater is mainly removed by chemical coagulation precipitation and biological methods. Biological phosphorus removal is difficult to make the effluent discharge up to standard. Chemical coagulation and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/58
CPCC02F1/58C02F2101/105
Inventor 王平周卫
Owner 四川东江化工有限公司
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