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Method for preparing surplus activated sludge-based activated carbon water treatment agent

A technology of residual activity and water treatment agent, which is applied in the direction of adsorption water/sewage treatment, chemical instruments and methods, and other chemical processes, and can solve the problems of preparing residual activated sludge-based activated carbon water treatment agent, etc. Non-toxic, easy to obtain and sufficient raw materials

Active Publication Date: 2017-08-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that there is no method for preparing residual activated sludge-based activated carbon water treatment agent in the prior art, and a new method for preparing residual activated sludge-based activated carbon water treatment agent is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Excess activated sludge-based activated carbon (100 mesh, specific surface area 943m 2 / g) 70g, inorganic polyaluminum chloride 30g, lime (150 mesh) 20g, alum 10g, silica sol 30g, water appropriate amount.

[0011] Prepare the water treatment agent according to the following steps: (1) Mix the remaining activated sludge-based activated carbon, inorganic polyaluminum chloride, lime, and alum evenly according to a certain ratio; (2) Weigh 30g of silica gel solution, add 30g of water to form a bonding agent agent, and then added to the sample in step (1), fully mixed and placed in an 80 ° C drying oven for air pre-oxidation for 12 hours, and then taken out after natural cooling; (3) the pre-oxidized sample was 5 °C / min to raise the temperature to 400 °C, keep the temperature for 2 hours for roasting, and take it out after natural cooling.

[0012] The water treatment agent is used to purify the oily sewage of the refined oil depot, 500ML, the chemical oxygen demand (COD) ...

Embodiment 2

[0014] Excess activated sludge-based activated carbon (100 mesh, specific surface area 943m 2 / g) 70g, inorganic polyaluminum chloride 40g, lime (150 mesh) 30g, alum 20g, silica sol 40g, water appropriate amount.

[0015] Prepare the water treatment agent according to the following steps: (1) Mix the remaining activated sludge-based activated carbon, inorganic polyaluminum chloride, lime, and alum evenly according to a certain ratio; (2) Weigh 40g of silica gel solution, add 40g of water to form a bonding agent agent, and then added to the sample in step (1), fully mixed and placed in an 80 ° C drying oven for air pre-oxidation for 12 hours, and then taken out after natural cooling; (3) the pre-oxidized sample was 5 °C / min to raise the temperature to 400 °C, keep the temperature for 2 hours for roasting, and take it out after natural cooling.

[0016] The water treatment agent is used to purify the oily sewage of the refined oil depot, 500ML, the COD is 2374, add 2.5g of the ...

Embodiment 3

[0018] Excess activated sludge-based activated carbon (100 mesh, specific surface area 943m 2 / g) 80g, inorganic polyaluminum chloride 40g, lime (150 mesh) 20g, alum 10g, silica sol 30g, water appropriate amount.

[0019] Prepare the water treatment agent according to the following steps: (1) Mix the remaining activated sludge-based activated carbon, inorganic polyaluminum chloride, lime, and alum evenly according to a certain ratio; (2) Weigh 30g of silica gel solution, add 30g of water to form a bonding agent agent, and then added to the sample in step (1), fully mixed and placed in an 80°C drying oven for air pre-oxidation for 16 hours, and then taken out after natural cooling; (3) the pre-oxidized sample was 5 °C / min to raise the temperature to 400 °C, keep the temperature for 2 hours for roasting, and take it out after natural cooling.

[0020] The water treatment agent is used to purify the oily sewage of the refined oil depot, 500ML, the COD is 2374, add 2.5g of the wa...

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Abstract

The invention relates to a method for preparing a residual active sludge-based active carbon water treatment agent, mainly solving the problem that a method for preparing the residual active sludge-based active carbon water treatment agent does not exist in the prior art. The method for preparing the residual active sludge-based active carbon water treatment agent comprises the following steps: (1) uniformly mixing residual active sludge-based active carbon, inorganic polymerized aluminum chloride, lime and white alum at a certain ratio; (2) adding water into a silica gel solution to prepare a silica sol binding agent and adding the silica sol binding agent into a sample of the step (1); sufficiently mixing and putting the sample into a drying box at 60 to 100 DEG C to be subjected to air pre-oxidization; heating the cooled sample to 300 to 500 DEG C under a nitrogen gas atmosphere and roasting at a constant temperature for 1 to 3 hours; cooling to obtain the water treatment agent. With the adoption of the technical scheme, the problems can be solved better and the technical scheme can be used for preparing the water treatment agent.

Description

technical field [0001] The invention relates to a method for preparing residual activated sludge-based activated carbon water treatment agent. Background technique [0002] The adsorption and disposal of organic pollutants in sewage by powdered activated carbon is a mature technology. This method has the advantages of simplicity, convenient operation, fast adsorption speed and strong adsorption capacity. However, due to the difficulty in regeneration of activated carbon powder, it can only be used once, so the cost is relatively high. Therefore, it is generally used for advanced treatment of wastewater (tertiary treatment). However, there is also an auxiliary process as a primary treatment. In this case, the adsorbent is required to be cheap, and the treatment efficiency is generally not high. Therefore, the development of activated carbon adsorbents with good treatment effect, high adsorption efficiency, cheap and easy access has become the key to the large-scale promotio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 张宏哲牟桂琴唐晓丽张志远郭亚逢
Owner CHINA PETROLEUM & CHEM CORP
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