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In-situ preparation method of a composite magnetic water treatment material

An in-situ preparation, magnetic water technology, applied in mining wastewater treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. The effect of efficient water treatment, rapid separation and good water treatment performance

Active Publication Date: 2020-03-27
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The new changes in the physical and chemical properties of produced water directly lead to the use of traditional water treatment agents, and the treatment effect is difficult to meet the actual needs of oilfield water treatment. It is urgent to find new treatment processes

Method used

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  • In-situ preparation method of a composite magnetic water treatment material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1: In situ deposition to prepare organically loaded Fe 3 o 4 magnetic aggregates

[0020] Measure 55ml of deionized water into the reactor, connect the sealed ventilation device, and bubble nitrogen into the deionized water for 30min. Weigh FeSO 4 ·7H 2 O powder 2.92g, C 17 h 35 Add 0.15 g of COONa (sodium octadecanoate) powder into the reactor, turn on the heating at 75°C, adjust the mechanical stirrer, keep the nitrogen flow continuously flowing, and stir and mix the system at a speed of 400 rpm for 15 minutes. Weigh 1.0g of NaOH powder, NaNO 3 1.7g of powder was dissolved in 20ml of deionized water, and the mixed solution was added to a 25ml constant pressure funnel and connected to the reactor. The heating temperature was raised to 85°C, the stirrer speed was increased to 700 rpm, and the NaNO 3 -NaOH mixed solution was added dropwise to the reaction system, reacted for 0.5h, and the reaction system gradually turned black.

[0021] Step 2: Organic load...

Embodiment 2

[0024] Step 1: In situ deposition to prepare organically loaded Fe 3 o 4 magnetic aggregates

[0025] Measure 55ml of deionized water into the reactor, connect the sealed ventilation device, and bubble nitrogen into the deionized water for 30min. Weigh FeSO 4 ·7H 2 O powder 2.92g, C 17 h 35 Add 0.15 g of COONa (sodium octadecanoate) powder into the reactor, turn on the heating at 75°C, adjust the mechanical stirrer, keep the nitrogen flow continuously flowing, and stir and mix the system at a speed of 400 rpm for 15 minutes. Weigh 1.0g of NaOH powder, NaNO 3 1.7g of powder was dissolved in 20ml of deionized water, and the mixed solution was added to a 25ml constant pressure funnel and connected to the reactor. The heating temperature was raised to 85°C, the stirrer speed was increased to 700 rpm, and the NaNO 3 -NaOH mixed solution was added dropwise to the reaction system, reacted for 0.5h, and the reaction system gradually turned black.

[0026] Step 2: Organic load...

Embodiment 3

[0029] Step 1: In situ deposition to prepare organically loaded Fe 3 o 4 magnetic aggregates

[0030] Measure 50ml of deionized water into the reactor, connect the sealed ventilation device, and bubble nitrogen into the deionized water for 30min. Weigh FeSO 4 ·7H 2 O powder 2.92g, C 17 h 35Add 0.30 g of COONa (sodium octadecanoate) powder into the reactor, turn on the heating at 75°C, adjust the mechanical stirrer, keep the nitrogen flow continuously flowing, and stir and mix the system at a speed of 400 rpm for 20 minutes. Weigh 1.0g of NaOH powder, NaNO 3 1.7g of powder was dissolved in 20ml of deionized water, and the mixed solution was added to a 25ml constant pressure funnel and connected to the reactor. The heating temperature was raised to 85°C, the stirrer speed was increased to 700 rpm, and the NaNO 3 -NaOH mixed solution was added dropwise to the reaction system, reacted for 0.5h, and the reaction system gradually turned black.

[0031] Step 2: Organic load ...

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Abstract

The invention discloses an in-situ preparation method of a magnetic water treatment material. The method comprises the steps that a divalent iron salt and an anionic organic carboxylic acid modifying agent are added to a solution system, so that the organic modifying agent and divalent iron ions produce a uniform effect; then alkali is further added to make a reaction system alkaline, an oxidizing agent is added to achieve in-situoxidization and deposition of the divalent iron ions, and an organic Fe3O4 supported aggregate is obtained; on the basis, an organic dispersing agent is added to the reaction system, and full stirring and dispersion are performed to obtain a composite magnetic material; finally, the prepared magnetic material is cleaned, collected, dried and grinded to obtain the magnetic water treatment material. The magnetic water treatment material prepared by adopting the method can be applied to the water treatment field such as oil-containing sewage purification.

Description

technical field [0001] The invention relates to an in-situ preparation method of a composite magnetic water treatment material. Background technique [0002] In the production process of the world's oil and gas industry, the total amount of produced water increases at a rate of 10% per year. The treatment methods and technological processes of produced water in different oilfields are not the same, but adding water treatment agents has always been the basic method of produced water treatment because of its economy and simplicity. At present, most domestic oil fields have also entered the middle and late stages of exploitation. The amount of water produced by oil fields is increasing, the composition of sewage is becoming more and more complicated, and its treatment is becoming more and more difficult. The new changes in the physical and chemical properties of produced water directly lead to the use of traditional water treatment agents, and the treatment effect is difficult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/54C02F103/10C02F101/32
CPCC02F1/54C02F2101/32C02F2103/10
Inventor 丁舒王素芳李志元林蓓丁秋炜徐慧于晓微滕厚开张艳芳
Owner CNOOC TIANJIN CHEM RES & DESIGN INST