Composite wastewater treatment medicament and preparation method thereof

A waste water treatment and medicament technology, applied in the direction of adsorption water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of complex process, expensive equipment, harsh conditions, etc., and shorten the residence time , The removal ability is obvious, the effect of the treatment process is rapid

Active Publication Date: 2019-05-14
江苏环保产业技术研究院股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, some of these technologies have complex processes and harsh conditions. For example, the use of Fenton needs to add two kinds of agents, and has strict requirements for pH; some equipment is expensive, such as ozone generators, etc.

Method used

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  • Composite wastewater treatment medicament and preparation method thereof
  • Composite wastewater treatment medicament and preparation method thereof
  • Composite wastewater treatment medicament and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of a composite wastewater treatment agent of POM and carbon nanotube modified activated carbon powder:

[0038] Weigh 50g of sodium tungstate dihydrate and 25g of disodium hydrogen phosphate and dissolve them in 250g of water, stir at 60°C at a speed of 100r / min for 1h until a thin crystal film begins to appear, and obtain solution A; then pour into the solution while stirring Add 250ml mass fraction to A and be 24%, density is 1.12g / cm 3 Hydrochloric acid, then add 26.9g sodium hypochlorite, 26.9g cobalt nitrate and 13.4g potassium persulfate, stir at 50r / min on a water bath at 60°C for 2h to react to obtain solution B; then add 20.75g carboxylated carbon to solution B Nanotubes, 2.08g bidisperse stabilizer and 51.88g polymeric iron salt, and under the protection of inert gas, reacted at 100°C with continuous stirring at a speed of 150r / min to obtain solution C; 40g activated carbon powder was added to 133.3g Mix in deionized water, add 6.7g of ti...

Embodiment 2

[0040] A preparation method of a composite wastewater treatment agent of POM and carbon nanotube modified activated carbon powder:

[0041] Weigh 50g of sodium tungstate dihydrate and 25g of disodium hydrogen phosphate and dissolve them in 250g of water, stir at 70°C for 1.5h at a speed of 200r / min and evaporate until a thin crystalline film begins to appear to obtain solution A; While stirring, add 250mL of 24% mass fraction and density of 1.12g / cm 3 hydrochloric acid, and added 42.8g sodium hypochlorite, 42.8g cobalt nitrate and 21.4g potassium persulfate, and stirred at a speed of 100r / min on a water bath at 70°C for 3h to react to obtain solution B; then add 30.7g hydroxylated Carbon nanotubes, 3.07g bidisperse stabilizer, 46.1g polyferric salt and 46.1g polyaluminum salt, and under the protection of an inert gas, reacted continuously at 150°C at a speed of 200r / min to obtain solution C; Add 40g of activated carbon powder into 150g of deionized water, mix and add 5g of ti...

Embodiment 3

[0043] A preparation method of a composite wastewater treatment agent of POM and carbon nanotube modified activated carbon powder:

[0044] Dissolve 50g of sodium tungstate dihydrate and 25g of disodium hydrogen phosphate in 500g of water, stir at 80°C at a speed of 300r / min for 2h and evaporate until a thin crystalline film begins to appear to obtain solution A; then in solution A While stirring, add 500ml mass fraction of 24%, density of 1.12g / cm 3 hydrochloric acid, and added 113.5g of sodium hypochlorite, 113.5g of cobalt nitrate and 56.75g of potassium persulfate in the solution, stirred at a speed of 150r / min on a water bath at 80°C for 4h to obtain solution B; then added 77.1 g hydroxylated carbon nanotubes, 7.7g bidisperse stabilizer and 269.9g polyaluminum salt, and under the protection of an inert gas, react at a temperature of 200°C and a stirring speed of 250r / min to obtain a solution C; Add 40g of activated carbon powder and 4g of titanium dioxide into 160g of de...

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Abstract

The invention discloses a composite wastewater treatment medicament and a preparation method thereof, and belongs to the technical field of recycled water treatment. The water treatment medicament prepared through the invention modifies an activated carbon system through a carbon-nano tube, the specific area of the medicament is increased, a porosity structure is intensified, and adsorption, electrostatic and other effects are enhanced, so that quick enrichment of pollutants is realized; the loaded persulfate plays a catalytic action through the Co and Fe ions combined by polyoxometalate (POM), the production of the sulfate free radical and hydroxy free radical is further promoted by combining the use of the hydrogen peroxide, and an advanced oxidation effect for activating the persulfateis formed, and the enriched pollutants are efficiently oxidized and degraded. The water treatment medicament prepared through the invention has oxidation and adsorption functions, and can effectivelyremove phosphorous, color and COD.

Description

technical field [0001] The invention relates to a composite wastewater treatment agent of polyoxometalate POM and carbon nanotube modified activated carbon powder and a preparation method thereof, belonging to the technical field of regenerated water treatment. Background technique [0002] With the continuous improvement of people's living standards in our country and the continuous expansion of industrial scale and industrial types, the volume and types of wastewater generated by production and life continue to increase. In particular, the expansion of petroleum, chemical, printing and dyeing, textile, leather and other industries has brought about an increase in wastewater discharge, and the wastewater has various components and complex physical and chemical properties. A lot of industrial wastewater has the characteristics of high COD, high chroma, high heavy metal content, and poor biodegradability, which makes many biological methods unable to be successfully applied t...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/52C02F1/28C02F101/16C02F101/20
Inventor 闫懂懂陈朋利杜凌峰吴伟刘波吴海锁
Owner 江苏环保产业技术研究院股份公司
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