Preparation method and application of oxidation flocculation composite water treatment agent

A water treatment agent and flocculation technology, which is applied to the preparation method of an oxidative flocculation composite water treatment agent and its application field, can solve the problems of inability to remove refractory organic matter, unsatisfactory treatment effect, complicated process, etc., and achieves accelerated alum precipitation. , good flocculation effect, less dosage effect

Inactive Publication Date: 2015-01-28
HONGFEI GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of conventional flocculants can only remove suspended solids or sedimentable substances in wastewater, and cannot remove refractory organic substances
And most of the processing methods for chemical industry and medicine in the prior art have many steps, complicated process, high cost and unsatisfactory processing effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Preparation of oxidative flocculation composite water treatment agent

[0020] a. Weigh 70g of n-decyl alcohol, put the silver powder of 4% n-decyl alcohol weight into a three-necked flask equipped with an intercalated test thermometer, a water separator, a reflux condenser, a nitrogen gas guide tube, and a magnetic stirrer, and continuously feed nitrogen , then add 20ml of ethylenediaminetetraacetic acid, quickly heat up to 250°C, react for 2 hours, cool to room temperature after the reaction, remove the above solution from the three-necked bottle into an open container, and set aside;

[0021] b. Add 10 g of trinitrotoluene to the solution prepared in step a, heat to 40°C and stir for 30 minutes, then cool to room temperature;

[0022] c. Add 30g of trimethylamine and 30g of chitosan with a mass percent concentration of 30% to the above solution, control the constant temperature at 70°C, react for 5 hours, cool to room temperature naturally, then add 10g of dimethyl ...

Embodiment 2

[0027] Preparation of oxidative flocculation composite water treatment agent

[0028] a. Weigh 60g of n-decyl alcohol, put the silver powder of 3% n-decyl alcohol weight into a three-necked flask equipped with an intercalated test thermometer, a water separator, a reflux condenser, a nitrogen gas guide tube, and a magnetic stirrer, and continuously feed nitrogen , then add 20ml of ethylenediaminetetraacetic acid, rapidly raise the temperature to 150°C, react for 1 hour, cool to room temperature after the reaction, remove the above solution from the three-necked bottle into an open container, and set aside;

[0029] b. Add 10 g of trinitrotoluene to the solution prepared in step a, heat to 40°C and stir for 30 minutes, then cool to room temperature;

[0030] c. Add 30g of trimethylamine and 30g of chitosan with mass percent concentration of 30% to the above solution, control the constant temperature at 65°C, react for 5 hours, cool to room temperature naturally, then add 10g o...

Embodiment 3

[0035] Preparation of oxidative flocculation composite water treatment agent

[0036] a. Weigh 80g n-decyl alcohol, silver powder with 5.5% n-decyl alcohol weight and put it into a three-necked flask equipped with an intercalated test thermometer, a water separator, a reflux condenser, a nitrogen gas guide tube, and a magnetic stirrer, and continuously feed nitrogen , then add 20ml of ethylenediaminetetraacetic acid, rapidly raise the temperature to 100°C, react for 2 hours, cool to room temperature after the reaction, remove the above solution from the three-necked bottle into an open container, and set aside;

[0037] b. Add 10 g of trinitrotoluene to the solution prepared in step a, heat to 40°C and stir for 30 minutes, then cool to room temperature;

[0038] c. Add 30g of trimethylamine and 30g of chitosan with mass percent concentration of 30% to the above solution, control the constant temperature at 65°C, react for 5 hours, cool to room temperature naturally, then add ...

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Abstract

The invention provides a preparation method of an oxidation flocculation composite water treatment agent, which comprises the following concrete steps of weighing n-decyl alcohol, putting silver powder with the weight of 0.5-5.5% of n-decyl alcohol into a three-mouth flask, continuously supplying nitrogen, adding 20ml ethylene diamine tetraacetic acid, quickly performing temperature rise to 100-300 DEG C, cooling to a room temperature after reaction completion, adding 10g trinitrotoluene, heating to 40 DEG C, stirring for 30min, cooling to the room temperature, adding trimethylamine and chitosan to a solution, performing a thermostatic reaction for 5h, naturally cooling to the room temperature, adding 10g dimethyl ether, 10g humic acid and 10g polyacrylamide, loading into a sealed pressure vessel, performing a reaction for 2-4h at 1.0-2.0MPa and 150-250 DEG C, performing ultrasonic oscillation on the solution for 60-90min, and obtaining the oxidation flocculation composite water treatment agent. The oxidation flocculation composite water treatment agent prepared by the method has the advantages of less consumption, high reaction speed, good flocculation effect and the like.

Description

technical field [0001] The invention relates to a preparation method and application of an oxidative flocculation composite water treatment agent, belonging to the field of environmental protection. Background technique [0002] In today's society, chemical and pharmaceutical companies are developing rapidly, and their output has increased significantly, and the amount of wastewater discharged by enterprises has also increased year by year. Chemical and pharmaceutical wastewater has the characteristics of complex composition, high concentration, deep color, and difficult to decompose organic matter, and contains a variety of water-soluble organic matter that is biologically toxic or carcinogenic, teratogenic, and mutagenic, so it is difficult to use conventional biological methods or physicochemical methods. Govern. How to decolorize is a key issue in the purification and treatment of dye wastewater. At present, the chemical flocculation method is widely used in dye wastew...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/54C02F1/56
Inventor 张亦彬
Owner HONGFEI GRP
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