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Method for treating leak oil polluted quartz beach sand

A quartz and sand technology, applied in the field of quartz beach sand treatment, can solve the problems of unsatisfactory treatment effect, bad working conditions, high labor intensity, etc. The effect of shipping costs

Inactive Publication Date: 2006-05-03
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As for the pollution caused by high-condensation and high-viscosity crude oil, there is currently only a method of manually eradicating it.
The manual removal method not only needs a lot of manpower, but also has high labor intensity and harsh working conditions, and it is impossible to completely remove the oil pollution through removal, and the treatment effect is not ideal

Method used

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  • Method for treating leak oil polluted quartz beach sand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Sand grains polluted by light oil A (the <200°C fraction accounts for 16.5%), with an oil content of 10%, and a weathering period of 3 days.

[0022] Treatment method: Combined with the accompanying drawings in the manual, add the quartz beach sand 1 polluted by the oil spill, the medicament 2 required for the separation process, and an appropriate amount of seawater 3 into the premix tank 4. In the premix tank, there is a mechanical stirring device 5, Properly stir the added seawater, chemicals and oil sands. Then add the premixed seawater, medicament and oil sand mixture 7 into the separation tank 8 through the pump 6, and add an appropriate amount of seawater into the separation tank, and the separated oil floats to the upper overflow port 9 of the separation tank and enters the oil collection tank 10 , the washed sand 11 is discharged from the sand outlet 12 at the bottom of the separation tank.

[0023] At a room temperature of about 25°C, 12.11% of the quartz bea...

Embodiment 2

[0025] Sand grains polluted by highly pouring crude oil B, with an oil content of 10%, and a weathering period of 11 days.

[0026] Processing method is with embodiment 1.

[0027] The freezing point of crude oil B is 32°C. Under the condition of room temperature 25 ℃, the quartzy beach sand (water content 0-90% in the sand, oil content 10%) that the degree of weathering reaches 8.19% of crude oil B pollutes, after 11 days of weathering, by adding oil sand weight 1.7 % of alkylphenol polyoxyethylene ether, and 0.1% of carboxymethyl cellulose and 0.1% of water glass by weight of oil sand, add appropriate amount of seawater, soak in the premix tank for about 1 hour, and then carry out mechanical stirring for 30 minutes, and the oil The removal rate can reach 99%.

Embodiment 3

[0029] Sand grains polluted by highly viscous crude oil C, the oil content is about 10%, and the weathering period is 5 days.

[0030] Processing method is with embodiment 1.

[0031] Crude oil C has a viscosity greater than 4000 centipoise at 25°C. At a room temperature of about 25°C, 8.49% of crude oil C polluted quartz beach sand (water content in the sand is 0-90%, oil content is about 10%) can be weathered by adding oil sand after 5 days of weathering 1.7% by weight of alkylphenol polyoxyethylene ether, and 0.2% by weight of oil sands of sodium carbonate, 0.1% by weight of water glass and 0.1% by cyclodextrin, add an appropriate amount of seawater, then soak in the premix tank for about 4 hours, After mechanical stirring for 20 minutes, the oil removal rate can reach 99%.

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Abstract

The invention discloses a method for treating the quartz beach sand which is polluted by spilled oil. The invention utilizes the seawater as separation medium, adds a certain amount of surface activator or a mixture of surface activator and separation agent, to effectively separate the polluted beach sand via mixing seawater, medicament and polluted sand in the environmental temperature, while the separation efficiency is more than 99%. The invention can apply the treatment on the quartz beach sand which is polluted by product oil and variable crude oil (including hyper-coagulate, high viscosity crude oil, and the separation between the polluted dry sand above the flood line and the beach wet sand. The invention uses seawater a separation medium to reduce the treatment cost markedly, while it can be processed in environmental temperature, without heating to effectively reduce the power consumption; it has lower medicament cost which is friendly to environment without secondary pollution; and it has high separation efficiency and lower demand for device and operation.

Description

technical field [0001] The invention belongs to the field of pollution prevention and control, and relates to a treatment method for quartz beach sand polluted by oil spills. Background technique [0002] With the rapid development of my country's economy, the demand for energy, especially crude oil, has grown rapidly. Since the 1990s, my country's crude oil imports have been increasing year by year. Most of the oil tankers used in the ocean transportation of crude oil are old and have low technical standards, and a considerable part of them are old ships. Maritime transportation is greatly affected by natural conditions, and there is a huge risk of oil spills in the process of carrying oil by these tankers. Once a large-scale oil spill accident occurs, it will bring catastrophic harm to marine ecology, fishery, and aquaculture. [0003] The current oil spill control technology mainly focuses on the treatment of sea oil spills, while the treatment of beaches polluted by oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B5/28
Inventor 郑建中王晓燕王静陈建胡西嘉翟建平魏忠波彭波周庆
Owner NANJING UNIV
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