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Water treatment composite flocculant

A composite flocculant and water treatment technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of insufficient performance of the agent, incomplete performance of the flocculant, and difficulty in controlling the dosing time. The effect of simplifying the dosing equipment and fast precipitation

Inactive Publication Date: 2008-12-24
郭振岳 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of the one-time dosing process of the mixed chemical solution are: insufficient performance of the chemical agent, large dosage, easy to cause waste, and produce secondary pollution
For the batch-dosing process, it is difficult to control the dosing time, and there are also disadvantages such as the inability of the chemicals to fully exert their effectiveness.
At present, the main problems of the combination of several flocculant dosing methods are that the performance of the flocculant is not fully exerted, and the dosage is large, resulting in waste of chemicals, increased operating costs, secondary pollution, and unstable effluent indicators.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Aluminum salt 40-60%, iron salt 15-30%, polyacrylamide 1-10%, starch 1-5%.

[0021] The present invention adopts spray compounding method, mixes 50 liters of aluminum sulfate and 20 liters of ferric sulfate mixed solution with 5 kg of solid non-ionic polyacrylamide powder, 2.5 kg of starch, mixes and mixes, sprays and dries after mixing, and obtains the present invention Invented multi-layer composite coagulant for water treatment. The particle diameter of the composite flocculant is 0.1-3mm on average. Since the sulfate is coated on the outer layer of the polyacrylamide, when the flocculant of the present invention is put into sewage for sewage treatment, the polyacrylamide begins to dissolve 1 minute after the sulfate dissolves.

Embodiment 2

[0023] Mix 40 liters of aluminum chloride and 15 liters of polyferric sulfate mixed solution with 1 kg of cationic polyacrylamide powder and 1 kg of starch, mix and mix, and then spray dry to obtain the water-treated multilayer Composite coagulant. The particle diameter of the composite flocculant is 0.1-3mm on average.

Embodiment 3

[0025] Mix 60 liters of aluminum chloride and 30 liters of polyferric sulfate mixed solution with 10 kilograms of cationic polyacrylamide powder and 5 kilograms of starch, mix and mix, and then spray dry to obtain the water-treated multilayer Composite coagulant. The particle diameter of the composite flocculant is 0.1-3mm on average.

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Abstract

The invention relates to a granular compound flocculant for water treatment compositely comprising a bilayer or multilayer flocculant. The components according to the weight percentage are as follows: aluminum salt 40%-60%, ferric salt 15%-30%, polyacrylamide 0.5%-10% and starch 1%-15%. The flocculant of the invention integrates the characteristic of both inorganic and organic flocculants, improves the dosing mode of the medicament, increases the action efficiency of the medicament by using the multilayer sustained release structure and improves the efficiency of the medicament.

Description

technical field [0001] The invention relates to a water treatment flocculant, in particular to a water treatment composite flocculant. Background technique [0002] Coagulation and sedimentation of chemical agents is a commonly used method in water treatment technology. The method has the characteristics of low investment, small land occupation, low operating cost and wide adaptability. In the coagulation and sedimentation technology of water treatment, the delivery method of chemical agents is one of the key technologies. With the improvement of water treatment requirements, a combination of various flocculants is often used in the chemical dosing process to meet the water quality requirements. The main disadvantages of the one-time dosing process of the mixed chemical solution are: insufficient performance of the chemical agent, large dosage, easy to cause waste, and produce secondary pollution. For the process of adding chemicals in batches, there are disadvantages suc...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 徐立群刘希邈
Owner 郭振岳
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