Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications

An oxidizing and polymer technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problem that the inorganic polymer ferrosilicon coagulant and its oxidative modifier have not formed a market scale, and the pollution removal performance has not been improved. Break through the problems of progress and poor product stability, and achieve the effects of low price, short production cycle and short stirring time

Inactive Publication Date: 2011-11-02
UNIV OF JINAN +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although a lot of research has been done on the preparation, performance, influencing factors and morphology of polymer ferrosilicon coagulants, the product stability is still poor, and there has been no breakthrough in the improvement of comprehensive decontamination performance.
In order to improve the multifunctionality of ferrosilicate coagulant, domestic CN1210818 (State Intellectual Property Office of the People's Republic of China) prepares oxidized polysilicate iron by adding an oxidizing agent (such as potassium permanganate or hydrogen peroxide, etc.). Addition makes the cost of the coagulant higher, resulting in a certain degree of difficulty in industrialization
These defects have led to the fact that inorganic polymer ferrosilicon coagulants and their oxidation modifiers have not yet formed a certain market size.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications
  • Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications
  • Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Dilute 20L of water glass with 71L of water. At a temperature of 20°C to 40°C and a stirring speed of 300 to 500 rpm, add the diluted water glass to 5L of dilute sulfuric acid solution with a mass fraction of 40%, and control the pH value to 3.5 , stop after stirring for 4 minutes, and let it stand for 1 hour to obtain polysilicic acid, which is ready for use. At a temperature of 25°C to 55°C, add 60kg of ferrous sulfate heptahydrate into 31L of dilute sulfuric acid solution with a mass fraction of 40%, and stir for 10 minutes at a speed of 150 to 300 rpm to prepare Obtain ferrous sulfate solution. Under the condition that the temperature is 25°C-55°C and the stirring speed is 200rpm-400rpm, the polysilicic acid to be used is added to the above-mentioned ferrous sulfate solution, and 3.5kg of sodium chlorate is added at the same time, After 5 minutes, the stirring was stopped, and the semi-finished product of the inorganic oxidizing polymer ferrosilicon coagulant was ...

Embodiment 2

[0033] Dilute 20L of water glass with 68L of water. At a temperature of 20°C to 40°C and a stirring speed of 300 to 500 rpm, add the diluted water glass to 5L of dilute sulfuric acid solution with a mass fraction of 40%, and control the pH value to 3 , stop after stirring for 4 minutes, and let it stand for 2 hours to obtain polysilicic acid, which is ready for use. At a temperature of 25°C to 55°C, add 30kg of ferrous sulfate heptahydrate into 18L of dilute sulfuric acid solution with a mass fraction of 40%, and stir for 10 minutes at a speed of 150 to 300 rpm to prepare Obtain ferrous sulfate solution. Under the condition that the temperature is 25°C-55°C and the stirring speed is 200rpm-400rpm, the polysilicic acid to be used is added to the above ferrous sulfate solution, and 1.7kg of sodium chlorate is added at the same time, After 5 minutes, the stirring was stopped, and the semi-finished product of the inorganic oxidizing polymer ferrosilicon coagulant was obtained. ...

Embodiment 3

[0035] Dilute 20L of water glass with 65L of water. At a temperature of 20°C to 40°C and a stirring speed of 300 rpm to 500 rpm, add the diluted water glass to 5L of dilute sulfuric acid solution with a mass fraction of 40%, and control the pH value to 2 , stop after stirring for 4 minutes, and let it stand for 3 hours to obtain polysilicic acid, which is ready for use. At a temperature of 25°C to 55°C, add 16kg of ferrous sulfate heptahydrate to 8.5L of dilute sulfuric acid solution with a mass fraction of 40%, and stir for 10 minutes at a speed of 150 to 300 rpm. Prepare ferrous sulfate solution. Under the condition that the temperature is 25°C-55°C and the stirring speed is 200rpm-400rpm, the polysilicic acid to be used is added to the above-mentioned ferrous sulfate solution, and 0.9kg of sodium chlorate is added at the same time, After 5 minutes, the stirring was stopped, and the semi-finished product of the inorganic oxidizing polymer ferrosilicon coagulant was obtaine...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
modulusaaaaaaaaaa
quality scoreaaaaaaaaaa
Login to View More

Abstract

The present invention provides an inorganic oxidizing macromolecular silicon iron coagulating agent, a preparation technique thereof and the application to water treatment. The coagulating agent is yellowish green or yellowish brown liquid or solid product, has low cost, good stability and oxidizing property and increases composite function and improves efficiency for eliminating turbidity, color, heavy metals, algae, organic matter, etc. The UV254 removal rate of the water of the Yellow River can reach 55%-80%, and the COD Mn removal rate can reach 75%-95%. For slaughtering wastewater, COD can drop below 100mg / L, and chroma is lowered below 5 and phosphorus removal rate can reach 80%-98%. The preparation method of the coagulating agent adopts an oxidation and copolymerization method, has simple technique and equipment, short period and no secondary pollution and can be carried out at normal pressure and low temperature. The inorganic oxidizing macromolecular silicon iron coagulating agent of the present invention is suitable for the treatment fields of municipal water supply and sewage as well as industrial water supply and wastewater and is especially suitable for low-temperature and low-turbidity water, the water of a micro-polluted water source or the industrial wastewater having high chroma and high organic content or containing refractory organic substances.

Description

technical field [0001] The invention relates to an inorganic oxidizing polymer ferrosilicon coagulant, its preparation process and its application as a coagulant in water treatment. Background technique [0002] Aluminum salts and iron salts are special inorganic coagulants in the field of water treatment. The residual aluminum in aluminum salt treatment water has cumulative biological toxicity, and its sludge cannot be reused and it is difficult to treat harmlessly. Therefore, non-toxic iron coagulants have been widely used and developed rapidly in the field of water treatment at home and abroad. It goes through three stages: traditional iron salt, inorganic polymer iron salt, and inorganic composite polymer iron salt. Inorganic polymer ferrosilicon coagulant is the latest variety among iron salts, which is a complex of silicon and iron. It was developed in Japan in the early 1990s, but it was reported in the form of patents. The coagulant has a good water purification eff...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
Inventor 付英于水利高宝玉于衍真邱立平冯研谭娟
Owner UNIV OF JINAN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products