A compound wastewater treatment agent and its preparation method

A wastewater treatment and pharmaceutical technology, applied in the directions of oxidized water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem that oxidation and adsorption are not organically combined, the synergy is not obvious, The problem of single oxidizing substances can achieve the effect of enhancing adsorption and static electricity, realizing rapid aggregation, and strengthening the void structure.

Active Publication Date: 2019-10-22
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, although the components in the agent are combined together, the synergistic effect is not obvious, and the oxidation and adsorption are not organically combined. The oxidizing substances in the agent are relatively single, with poor persistence and limited oxidation ability. Contaminant wastewater application capacity is limited
The Chinese patent "Organic Sewage Treatment Composite Agent" (application number: 201310572325.2; publication date: May 20, 2015) also uses the strong oxidizing properties of ferrate to oxidize and remove pollutants. At the same time, the active carbon component contained in the agent It can play the role of adsorbing pollutants, and some iron salts can also play the role of coagulation and precipitation, but this agent seems to be a simple mixture of several key substances, each of which plays its role, and cannot achieve a better effect after being combined , and the medicine needs to be prepared according to the different water quality, the process is complicated and not timely, and it is difficult to popularize and use

Method used

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  • A compound wastewater treatment agent and its preparation method
  • A compound wastewater treatment agent and its preparation method
  • A compound wastewater treatment agent and its preparation method

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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PUM

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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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Patent Type & AuthorityPatents(China)
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