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Water treatment compound agent based on potassium ferrate and preparation method of water treatment compound agent

A technology of potassium ferrate and preparation method, which is applied in the field of water treatment, can solve the problems of late development time, high price, and treatment cost limitation on the application of potassium ferrate, and achieve the effects of reducing cost input, low price, and increasing water treatment performance

Inactive Publication Date: 2013-05-29
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Potassium ferrate, as a new type of wastewater treatment reagent, was developed relatively late. Due to market supply and demand and manufacturer's technology, the market price of potassium ferrate is currently relatively high, and the relatively expensive treatment costs greatly limit the use of potassium ferrate. Applications in Wastewater Treatment Processes

Method used

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  • Water treatment compound agent based on potassium ferrate and preparation method of water treatment compound agent
  • Water treatment compound agent based on potassium ferrate and preparation method of water treatment compound agent
  • Water treatment compound agent based on potassium ferrate and preparation method of water treatment compound agent

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Experimental program
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Effect test

Embodiment 1

[0016] A water treatment composite agent based on potassium ferrate, containing by mass percentage: 22% potassium ferrate, 35% polyferric sulfate, 30% diatomaceous earth, 10% calcium hydroxide, 3% sodium hydroxide, and its preparation method Method: first take 22% of potassium ferrate, 35% of polyferric sulfate, 30% of diatomaceous earth, 10% of calcium hydroxide and 3% of sodium hydroxide according to the mass percentage, then add the above ingredients into a dry container one by one, and pass it into Under the protection of dry argon, stir at room temperature for 20 minutes until the mixture is uniform at a stirring speed of 50 rpm, and store in an argon environment, sealed, water-proof, and dark place.

Embodiment 2

[0018] A water treatment composite agent based on potassium ferrate, containing by mass percentage: 12% potassium ferrate, 40% polyferric sulfate, 25% diatomaceous earth, 20% calcium hydroxide, 3% sodium hydroxide, its preparation method Method: first take 12% of potassium ferrate, 40% of polyferric sulfate, 25% of diatomaceous earth, 20% of calcium hydroxide and 3% of sodium hydroxide according to the mass percentage; Protected by dry argon, stir at room temperature for 30 minutes until the mixture is uniform, and the stirring speed is 30 rpm, and store in an argon environment, sealed, water-proof, and dark place.

Embodiment 3

[0020] A water treatment composite agent based on potassium ferrate, containing by mass percentage: 30% potassium ferrate, 30% polyferric sulfate, 20% diatomaceous earth, 17% calcium hydroxide, 3% sodium hydroxide, its preparation method Method: first take 30% of potassium ferrate, 30% of polyferric sulfate, 20% of diatomaceous earth, 17% of calcium hydroxide and 3% of sodium hydroxide according to the mass percentage, and then add the above ingredients into a dry container one by one, and pass them into Under dry nitrogen protection, stir at room temperature for 40 minutes until uniformly mixed at a stirring speed of 60 rpm, and store in a nitrogen environment, sealed, water-free, and dark place.

[0021] Specific use effect

[0022] Wastewater 1: The comprehensive tannery wastewater used in the experiment comes from a tannery in Haining City, Zhejiang Province. The wastewater has not been treated in any way. Its pH value is 5.9, chromaticity is 1300 times, COD Cr It is 5602...

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Abstract

The invention discloses a water treatment compound agent based on potassium ferrate. The water treatment compound agent comprises the following components by mass percent: 8-35 percent of potassium ferrate, 25-50 percent of polymeric ferric sulfate, 20-40 percent of diatomite, 5-20 percent of calcium hydroxide and 3-8 percent of sodium hydroxide. A preparation method of the water treatment compound agent comprises the following steps of: adding the components into a dry vessel one by one, introducing dry inert gas to carry out protection, uniformly mixing under the condition of room temperature, and storing a mixture in the inert gas environment and a sealed and dark position without water. With the adoption of the water treatment compound agent, the cost investment in the water treatment process is effectively lowered, and the water treatment effect of potassium ferrate can also be further improved; and the water treatment compound agent is wide in component source and good in biocompatibility, has low cost, does not have environmental toxicity and accords with the requirement of greening of water treatment.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a potassium ferrate-based water treatment composite agent and a preparation method thereof. Background technique [0002] The global ecological environment is deteriorating day by day, and water resources are becoming increasingly scarce. A large amount of industrial wastewater and domestic sewage must be strictly treated in order to alleviate the shortage of water resources to a certain extent. After years of research on water treatment, a large number of sewage treatment reagents with excellent performance have emerged, among which potassium ferrate has been widely used as an ideal water treatment agent that is safe for humans and organisms and has no secondary pollution to the environment. Research. A large number of studies have proved that: Potassium ferrate can not only remove pollutants and some carcinogenic chemicals in water, but also does not produce any mutag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/28C02F1/52
Inventor 苗宗成王蕾霍小平张东霞王登武张永明
Owner XIJING UNIV
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