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Emergency repair process for treating pollution of natural water body emulsified oil

An emergency repair and water body technology, applied in the fields of water pollutants, flotation water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of loss, hooking of activated carbon bags, large dosage of drugs, etc., and achieve low cost, high water quality Qualified, the effect of solving emulsified oil pollution

Inactive Publication Date: 2013-07-24
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, activated carbon dams are only suitable for small river pollution. The adsorption of activated carbon bags on the net is easy to cause hooking and loss, and the dosage is relatively large.
In the laboratory test of the inventor, it was found that the water quality after treatment by this method is difficult to meet the qualified standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 20g of paint was added to 100L river water for a pilot test of simulated pollution. A vortex vibrator was installed in the pilot test water tank to simulate the waves and flow of natural water bodies, and a hair dryer was used to fix the water surface to blow air. After stirring, the water body is turbid, and there are large thin layers of oil debris on the water surface.

[0022] The semi-coke powder treated at 500°C with wood sawdust powder and PAC (polyaluminum chloride) are compounded at a ratio of 20:1, and water equal to the weight of the mixture is added to mix into a slurry (adsorption and flocculation compound agent) for later use. When using, put 200g of asbestos fibers (0.1-10cm in length) to disperse, then put 600g of mud into the water and stir for adsorption-flocculation. After 12 hours, it is detected that the oil in the water body has been basically absorbed and disappeared. A solution containing 10 g of cationic PAM (flocculant aid) dissolved in water i...

Embodiment 2

[0026] 20g of coal tar was added to 100L of river water for a pilot test of simulated pollution. A stirrer was installed in the pilot test water tank to stir at a speed of 1r / s to simulate the waves and flows of natural water bodies. The water surface was blown with a hair dryer. At this time, there were oil droplets floating in the water body, and there was basically no oil stain on the water surface, but a small amount of black fine oily matter stuck to the polyethylene pilot test tank wall at the bottom of the water, and the water body had an odor.

[0027] Put Pingpingjia (a surfactant) 10g, 100g glass fiber and stir to disperse in the water to simulate the existing dispersant aqueous solution to wash the oil spill polluted beach. brown.

[0028] Add 2.5g KMnO in advance 4 Pre-oxidation was carried out for 30 minutes. The water body is slightly red.

[0029] The rice straw fragments carbonized at 450°C are compounded with PAC at a ratio of 20:1, and water equal to the w...

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Abstract

The invention discloses an emergency repair process for treating pollution of natural water body emulsified oil, which comprises the following steps of: preparing an absorbing and flocculating composite medicine for standby by using adsorbent powder with hydrophilic and oleophylic dual performance and a conventional flocculating agent; adding oleophylic and hydrophilic short fiber into a water body to be treated; directly adding the absorbing and flocculating composite medicine and enabling the water body to be muddy and generate tiny flocculating constituents; 1-24 hours later, adding a cation flocculating auxiliary agent and converting the flocculating body into a fiber reinforced flocculating body to be floated on the water by assisting an air flotation technology; and finally, catching the flocculating body on the water to finish the emergency repair. In order to further reinforce the wind wave resistance of the flocculating body on the water, the aluminum salt or ferric salt can be sprayed to cross link. The invention rapidly solves the problem of pollution of the natural water body emulsified oil dirt which is difficult for treatment at present with low cost, can be used as an emergency repair technology, and has qualified water quality.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an emergency repair process for treating emulsified oil pollution in natural water bodies. technical background [0002] Natural water body emulsified oil pollution mainly occurs in the following situations: (1) beach pollution occurs when oil spills, and the oil stain needs to be washed with emulsifier aqueous solution, and the washed oil stain will flow into seawater; (2) metal and stone cutting Emulsified oil cutting fluid and stone coolant are discharged into the water for pollution; (3) Emulsified oil stains produced by cleaning oil tankers and tankers; (4) Various oil stains or paints leak into stormy water bodies. There are also suspended oil droplets caused by the shear of the water flow. [0003] Water pollution by emulsified oil will lead to increased COD (chemical oxygen demand) in the water body, hypoxia of animals and plants in the water body, and i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08C02F1/40C02F1/52C02F1/28C02F1/24C02F101/32
Inventor 陈楷翰
Owner QUANZHOU NORMAL UNIV