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Treatment method of oily sludge

A treatment method and technology for oil sludge, applied in sludge treatment, water/sludge/sewage treatment, oxidation treatment of sludge, etc., can solve problems such as secondary pollution, reduce adhesion and reduce the content of heavy metals , the effect of improving traits

Pending Publication Date: 2020-11-10
陈贝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above technical problems, the present invention provides a treatment method for oily sludge, which can effectively solve the problem of secondary pollution caused by existing oily sludge treatment methods

Method used

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  • Treatment method of oily sludge

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Experimental program
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Effect test

Embodiment 1

[0021] A treatment method for oily sludge, carried out according to the following steps:

[0022] Step 1: Microwave pretreatment, use a double screw conveyor to transport the oily sludge material to the microwave treatment tank, and add surfactant, oxidant, sodium hydroxide and water equal to the volume of the material, use microwave heating to 300 ° C, stir For 1 hour, add silicon dioxide and continue stirring so that the mass concentration of silicon dioxide is 2 g / L, continue stirring and heating for 30 minutes, and carry out the reaction.

[0023] Wherein surfactant is the mixture that fatty acid sorbitan and NP-10 are formed by mass ratio as 1:2, and oxidizing agent is the mixture that potassium persulfate and hydrogen peroxide are formed by mass ratio that is 1:1, by mass parts ratio tensio-active agent: Oxidant: silicon dioxide: sodium hydroxide: oily sludge=1:0.5:2:3:10.

[0024] Step 2: Separation. Put the reacted materials in the microwave treatment tank through the...

Embodiment 2

[0028] A treatment method for oily sludge, carried out according to the following steps:

[0029] Step 1: Microwave pretreatment, use a double screw conveyor to transport the oily sludge material to the microwave treatment tank, and add surfactant, oxidant, sodium hydroxide and water equal to the volume of the material, use microwave heating to 300 ° C, stir After 1 hour, add silicon dioxide and continue to stir, and heat for 30 minutes to carry out the reaction.

[0030] Wherein surfactant is the mixture that fatty acid sorbitan and NP-10 are formed by mass ratio as 1:2, and oxidizing agent is the mixture that potassium persulfate and hydrogen peroxide are formed by mass ratio that is 1:1, by mass parts ratio tensio-active agent: Oxidant: silicon dioxide: sodium hydroxide: oily sludge=1.3:0.6:2.2:3.5:12.

[0031] Step 2: Separation. Put the reacted materials in the microwave treatment tank through the separation tank to stand still, separate the oil-water layer and the sedim...

Embodiment 3

[0035] A treatment method for oily sludge, carried out according to the following steps:

[0036] Step 1: Microwave pretreatment, use a double-screw conveyor to transport the oily sludge material to the microwave treatment tank, and add surfactant, oxidant, sodium hydroxide and water equal to the volume of the material, use microwave heating to 300 ° C, stir For 1 hour, add silicon dioxide and continue stirring so that the mass concentration of silicon dioxide is 2 g / L, continue stirring and heating for 30 minutes, and carry out the reaction.

[0037] Wherein surfactant is the mixture that fatty acid sorbitan and NP-10 are formed by mass ratio as 1:2, and oxidizing agent is the mixture that potassium persulfate and hydrogen peroxide form by mass ratio that is 1:1, by mass parts ratio tensio-active agent: Oxidant: silicon dioxide: sodium hydroxide: oily sludge=1.6:0.7:2.6:4:13.

[0038] Step 2: Separation. Put the reacted materials in the microwave treatment tank through the s...

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Abstract

The invention discloses a treatment method of oily sludge. The treatment method is realized by the following measures: step 1, microwave pretreatment; step 2, separation; step 3, high-temperature treatment in a rotary kiln; step 4, tail gas treatment. According to the scheme disclosed by the invention, through microwave pretreatment, the adsorption state between oil and sludge in the oily sludge is changed in molecules, so that the content of oil in the sludge is effectively reduced. An added oxidizing agent reacts with metal ions in the oily sludge, so that the metal ions are dissolved in water, the content of heavy metals in the oily sludge is effectively reduced, products in the production process can be recycled, and energy conservation and environmental protection are facilitated.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a treatment method for oily sludge. Background technique [0002] The water-crude oil-silt mixture produced in the process of gas field exploitation, transportation, purification and subsequent purification of gas field wastewater is called gas field oily sludge, which is one of the high-risk pollutants in many natural gas industries. The entire system of oily sludge is in a stable oil-in-water (O / W) or water-in-oil (W / O) highly emulsified state, and forms a uniform dispersion system with sediment particles under the combined action of hydration and electricity. The highly emulsified oily sludge not only contains crude oil, paraffin, asphaltene, harmful bacteria, various inorganic salts, acidic corrosive gases, pipeline corrosion products and other components, but also contains various additives used in natural gas mining. Wastewater purification treatment proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/06C02F11/10C02F11/131C02F11/148
CPCC02F11/06C02F11/10C02F11/131C02F11/148
Inventor 陈贝
Owner 陈贝
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