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Novel inorganic-organic composite type high-molecular coagulant

A polymer coagulant and composite technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, water treatment parameter control, water/sewage treatment, etc., can solve the problem that the preparation process is not perfect and affects the stability of the composite coagulant And use performance, refractory degradation and environmental protection, etc., to achieve the effect of high charge density, increased adsorption and bridging ability, and large pH range

Inactive Publication Date: 2017-11-17
肇庆高新区恒泰信息服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the inorganic-organic composite coagulant is not perfect at present, and there are still problems in use that affect the stability and performance of the composite coagulant due to the differences in the physical and chemical properties of each component, as well as refractory and environmental protection. question

Method used

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  • Novel inorganic-organic composite type high-molecular coagulant

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Embodiment 1

[0018] A novel inorganic-organic composite polymer coagulant, comprising the following raw materials in parts by weight: 5 parts of modified polyacrylamide, 5 parts of dimethyl diallyl ammonium chloride, 13 parts of magnesium chloride, polymerized chloride 65 parts of aluminum, 1 part of calcium chloride, 8 parts of bentonite, 0.3 parts of sodium bicarbonate.

[0019] The preparation method of modified polyacrylamide is as follows: mix polyacrylamide and formaldehyde in a constant temperature water bath at 50°C and stir for 10 minutes, then add dimethylamine dropwise and heat for 4 hours, cool to 15°C, and adjust the pH value with hydrochloric acid To 5, finally add dimethyl sulfate slowly, react for 1h, pour the obtained product into cold water at 5°C, filter with suction, wash, and dry under negative pressure at 40°C to obtain modified polyacrylamide.

[0020] The raw materials of the polyaluminum chloride include hydrochloric acid and a mixture formed by mixing aluminum chi...

Embodiment 2

[0022] A novel inorganic-organic composite polymer coagulant, comprising the following raw materials in parts by weight: 1 part of modified polyacrylamide, 5 parts of dimethyl diallyl ammonium chloride, 15 parts of magnesium chloride, polymerized chloride 60 parts of aluminum, 1.5 parts of calcium chloride, 5 parts of bentonite, and 0.5 parts of sodium bicarbonate.

[0023] The preparation method of modified polyacrylamide is as follows: mix polyacrylamide and formaldehyde in a constant temperature water bath at 60°C and stir for 30 minutes, then add dimethylamine dropwise and heat for 6 hours, cool to 15°C, and adjust the pH value with hydrochloric acid To 5, finally add dimethyl sulfate slowly, react for 1.5h, pour the obtained product into cold water at 5°C, filter with suction, wash, and dry under negative pressure at 45°C to obtain modified polyacrylamide.

[0024] The raw materials of the polyaluminium chloride include hydrochloric acid and a mixture formed by mixing alu...

Embodiment 3

[0026] A novel inorganic-organic composite polymer coagulant, comprising the following raw materials in parts by weight: 10 parts of modified polyacrylamide, 1 part of dimethyl diallyl ammonium chloride, 10 parts of magnesium chloride, polymerized chloride 70 parts of aluminum, 1 part of calcium chloride, 10 parts of bentonite, 0.2 parts of sodium bicarbonate, and 2 parts of calcium hydroxide.

[0027] The preparation method of modified polyacrylamide is as follows: mix polyacrylamide and formaldehyde in a constant temperature water bath at 70°C and stir for 15 minutes, then add dimethylamine dropwise and heat for 5 hours, cool to 15°C, and adjust the pH value with hydrochloric acid To 5, finally add dimethyl sulfate slowly, react for 2 hours, pour the obtained product into cold water at 5°C, filter with suction, wash, and dry under negative pressure at 60°C to obtain modified polyacrylamide.

[0028] The raw materials of the polyaluminium chloride include hydrochloric acid an...

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Abstract

The invention provides a novel inorganic-organic composite type high-molecular coagulant and relates to the field of coagulants. The novel inorganic-organic composite type high-molecular coagulant contains the following materials in parts by weight: 1-10 parts of modified polyacrylamide, 1-5 parts of dimethyl diallyl ammonium chloride, 10-15 parts of magnesium chloride, 60-80 parts of polymeric aluminium chloride, 0.5-1.5 parts of calcium chloride, 5-10 parts of bentonite and 0.1-0.5 part of sodium bicarbonate. The novel inorganic-organic composite type high-molecular coagulant provided by the invention has the advantages that by composition of the modified polyacrylamide, the dimethyl diallyl ammonium chloride and the polymeric aluminium chloride, the adsorption bridging capability and the flocculating capability of the coagulant are improved, and the use amount of the coagulant is reduced, so that problems caused by environmental protection are reduced; the heat stability is high, layering is not easy to occur after long-time placement, and the dispersibility is better; by application of the prepared coagulant, the charge density is high, the PH range of the application is large, the performance is high and 95% of COD (Chemical Oxygen Demand) and 99% of chromaticity and turbidity in industrial waste water can be removed.

Description

technical field [0001] The invention relates to the field of coagulants, in particular to a novel inorganic-organic composite polymer coagulant. Background technique [0002] Coagulation is one of the key links in the conventional water treatment process. The quality of the coagulant directly affects the coagulation effect. With the increasing environmental pollution and people's higher and higher requirements for water quality, research and development of new high-efficiency The coagulant has become an important and urgent matter. Inorganic polymer coagulants have strong applicability to water treatment of various complex components, but the formation of flocs is small, and the dosage is large, and the amount of sludge generated is large, while the amount of organic polymer coagulants is small and the flocculation speed is fast. The amount of generated sludge is small, but the cost is high. In order to further improve the economic benefits, social benefits and environment...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/54C02F1/56
CPCC02F1/5236C02F1/5245C02F1/54C02F1/56C02F2209/08C02F2209/11
Inventor 黄丹
Owner 肇庆高新区恒泰信息服务有限公司
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