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Method for quickly removing greasy dirt in sewage

A sewage and fast technology, applied in the field of water pollution treatment, can solve the problems of no deep purification and reuse and emergency treatment functions, low oil pollution treatment efficiency, etc., to avoid the expansion of pollution scope, significant time benefit, and high removal efficiency.

Inactive Publication Date: 2015-07-01
刘冬峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing technical solutions are more used in the field of petroleum wastewater. For water bodies with relatively high ion content (such as: seawater or high-salt water bodies), the biochemical model of domestic wastewater is simply applied to treat the wastewater, and the discharged water It can only meet the third-level discharge standard, that is, the COD of the discharged water is less than 500mg / L, and the oil pollution treatment efficiency is low, and there is no deep purification reuse and emergency treatment function

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for rapidly removing oil stains in sewage (wherein the mass fraction of oily sewage salt is 1.5%) comprises the following steps.

[0021] Step 1. Sewage collection: Use a pump to transport the oily sewage to the emergency sump. After the sewage in the emergency sump is stabilized and stratified, use the oil pump to remove the upper oil phase. The equipment and procedures used in this step are prior art and belong to the known category, so they will not be repeated here.

[0022] Step 2, adsorption of oil-absorbing felt: spread the oil-absorbing felt on the treated sewage water surface in step 1, and use the oil-absorbing felt to absorb the oil in the sewage. The oil-absorbing felt is a polypropylene fiber oil-absorbing felt.

[0023] Step 3, oil-water separation: the sewage treated in step 2 is passed into an oil-water separator for oil-water separation.

[0024] Step 4, air flotation degreasing: pump the sewage treated in step 3 to the air flotation device fo...

Embodiment 2

[0034] A method for rapidly removing oily pollution in sewage (wherein the oily sewage is sea water), comprising the following steps.

[0035] Step 1. Sewage collection: Use a pump to transport the oily sewage to the emergency sump. After the sewage in the emergency sump is stabilized and stratified, use the oil pump to remove the upper oil phase.

[0036] Step 2, adsorption of oil-absorbing felt: spread the oil-absorbing felt on the treated sewage water surface in step 1, and use the oil-absorbing felt to absorb the oil in the sewage. The oil-absorbing felt is a polypropylene fiber oil-absorbing felt.

[0037]The preparation steps of the polypropylene fiber oil-absorbing felt are as follows: dissolve 30 parts by weight of polypropylene in 300 parts by weight of tetrahydrofuran, stir at 60°C for 8 hours to obtain a polypropylene solution; dissolve 25 parts by weight of polymethyl methacrylate Dissolve in 300 parts by weight of dimethylacetamide, stir at 50°C for 2 hours to obt...

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Abstract

The invention discloses a method for quickly removing greasy dirt in sewage. The method sequentially comprises the following nine steps on oil-containing sewage: collecting sewage; adsorbing by an oil adsorbing felt; separating oil and water; air-floating to remove oil; carrying out ultrasonic oxidization; carrying out flocculation reaction; carrying out adsorption reaction; filtering and removing impurities; and sterilizing. High sanity water bodies can be quickly treated, so that the removal efficiency is high, the effluent quality is stable, the pollutants are substantially removed, and the requirements on reclaimed water can be satisfied. The method disclosed by the invention has a remarkable time benefit and can be used for quickly treating the polluted water body so as to avoid expansion of the pollution scope of oil.

Description

technical field [0001] The invention belongs to the field of water pollution treatment, in particular to a method for quickly removing oil stains in sewage. Background technique [0002] The treatment of oily water is a very important field in the existing sewage treatment. The oil discharged into the water environment can prevent the oxygen in the air from dissolving in the water, causing the plankton in the water to die due to lack of oxygen, and causing fish and shellfish to die. Wait until the taste changes, it is not suitable for eating, and the coalesced oil on the surface of the water body may burn to cause safety problems. With people's emphasis on environmental protection and the strengthening of pollution control in my country, the research and application of oily wastewater treatment technology has developed rapidly. According to its principle of action and removal objects, it can be divided into mechanical methods, chemical methods, physical chemical methods and ...

Claims

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Application Information

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IPC IPC(8): C02F9/04
Inventor 刘冬峰张丽萍
Owner 刘冬峰
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