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A kind of modified activated carbon filler and its preparation method and application

A technology of activated carbon and modification, which is applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc. The method is simple, the application effect is good, and the effect of improving physical and chemical properties

Inactive Publication Date: 2019-07-12
中国石化集团中原石油勘探局有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the advanced treatment process, when the total phosphorus is degraded by adding polyaluminum chloride or other flocculant agents, there are unstable or poor effects, and it is difficult to degrade the dissolved phosphate in water, total phosphorus, suspended solids, Indicators such as total nitrogen are difficult to meet the standards. In addition, oils, anionic surfactants and other substances in the sewage will also affect the sewage treatment effect, resulting in unstable or substandard effluent, which brings great risks

Method used

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  • A kind of modified activated carbon filler and its preparation method and application
  • A kind of modified activated carbon filler and its preparation method and application
  • A kind of modified activated carbon filler and its preparation method and application

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preparation example Construction

[0019] Based on the same inventive concept, the present invention also provides a specific preparation method for the above-mentioned modified activated carbon filler, which specifically includes the following steps:

[0020] S1: Mix γ-(2,3-glycidoxy)propyltrimethoxysilane, water and alcohol solvent evenly according to the volume ratio of 1:1-2:15-30, and adjust the pH value at 5.2-5.5 , the reaction time is controlled at 6-6.5 hours, and a completely hydrolyzed turbid appearance gamma-(2,3-glycidyloxy)propyltrimethoxysilane hydrolyzate is obtained;

[0021] Concrete chemical reaction is as shown in formula (I):

[0022]

[0023] S2: Mix the prepared γ-(2,3-glycidyloxy)propyltrimethoxysilane hydrolyzate, activated carbon and alcohol solvent according to the ratio of 1L hydrolyzate: 900-1200g activated carbon: 1-2L alcohol solvent, and stirring, adjusting the pH value at 6.0-6.5, and controlling the reaction time at 7-8 hours to obtain the modified activated carbon filler; ...

Embodiment 1

[0028] Measure 100mL of γ-(2,3-glycidyloxy)propyltrimethoxysilane, 150mL of water and 2000mL of 75% ethanol respectively, mix the weighed components in the reactor, and stir , until uniform, adjust the pH value of the solution at 5.5, and control the reaction time at 6.5 hours to obtain a completely hydrolyzed turbid appearance gamma-(2,3-glycidoxy)propyltrimethoxysilane hydrolyzate;

[0029] Measure the turbid appearance γ-(2,3-glycidoxy) propyltrimethoxysilane hydrolyzate 1000mL, activated carbon 900g, 75% ethanol 2000mL of the thoroughly hydrolyzed appearance turbid type prepared above, and thoroughly hydrolyze The turbid appearance gamma-(2,3-glycidyloxy) propyltrimethoxysilane hydrolyzate is mixed with the above-mentioned activated carbon and 75% ethanol and fully stirred, the pH value is adjusted at 6.2, and the reaction time is controlled at 7.8 hours to prepare Obtain a fully modified liquid activated carbon filler;

[0030] The fully modified liquid activated carbon ...

Embodiment 2

[0032] Measure 100mL of γ-(2,3-glycidyloxy)propyltrimethoxysilane, 100mL of water and 1500mL of 90% ethanol respectively, mix the weighed components in the reactor, and stir , until uniform, adjust the pH value of the solution at 5.2, and control the reaction time at 6 hours to obtain a completely hydrolyzed turbid appearance gamma-(2,3-glycidoxy)propyltrimethoxysilane hydrolyzate;

[0033] Measure 1000 mL of the thoroughly hydrolyzed appearance turbid type γ-(2,3-glycidyloxy) propyltrimethoxysilane hydrolyzate, 1000 g of activated carbon, and 1500 mL of 90% ethanol obtained above. The turbid appearance gamma-(2,3-glycidyloxy) propyltrimethoxysilane hydrolyzate is mixed with the above-mentioned activated carbon and 90% ethanol and fully stirred, the pH value is adjusted at 6.0, and the reaction time is controlled at 7 hours. Obtain a fully modified liquid activated carbon filler;

[0034] The fully modified liquid activated carbon filler was placed in a 40°C constant temperat...

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Abstract

The invention provides a modified activated carbon filler. The filler is prepared by the following steps: by taking activated carbon as a raw material, modifying hydroxyl groups on the surface of the activated carbon by a silane coupling agent, thereby obtaining the filler. According to the modified activated carbon filler provided by the invention, the silane coupling agent and activated carbon with low cost are combined together, novel groups are introduced, physical and chemical properties of the activated carbon filler are improved, effects of removing total phosphorus, total nitrogen and suspended solids in wastewater can be enhanced, substances in water, such as oil and anionic surfactants, can be effectively degraded, the problem that indexes, such as organic matters, total phosphorus, total nitrogen and suspended solids, are hard to reduce in the advanced wastewater treatment process can be solved, the application range is wide, and the economic cost is low.

Description

technical field [0001] The invention relates to water treatment chemicals, in particular to a modified activated carbon filler and its preparation method and application. Background technique [0002] Activated carbon is a granular filler commonly used in biological aerated filters. It is usually used as a biological carrier to adsorb, retain and biodecompose organic matter in sewage. In the process of upgrading and upgrading the biological aerated filter, it is necessary to increase the advanced treatment part. In the existing technology, the advanced treatment part often only adopts the method of adding flocculant, and further reduces the total phosphorus by increasing flocculation and adding chemicals and filters. , Suspended solids and other indicators, and upgrade the first-level B effluent standard to the first-level A standard. However, in the advanced treatment process, when the total phosphorus is degraded by adding polyaluminium chloride or other flocculant agents...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10
CPCC02F3/106Y02W10/10
Inventor 苏志新
Owner 中国石化集团中原石油勘探局有限公司
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