Sludge high-pressure three-phase separation method

A three-phase separation, high-pressure technology, applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of inappropriate sludge treatment, slightly poor effect, low separation efficiency, etc., and achieve remarkable results. Social and economic benefits, no secondary pollution, high separation efficiency

Inactive Publication Date: 2008-11-12
DALIAN DONGTAI INDAL WASTE TREATMENT
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Problems solved by technology

[0018] This method is rarely used at home and abroad at present. The Chinese invention patent application discloses a three-phase separation method, but it is not suitable for direct treatment of oil sludge. It is difficult to effectively separate the three phases of oil, mud and water only by using the three-phase separation method. The separation efficiency is low and the effect is slightly worse

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  • Sludge high-pressure three-phase separation method

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Embodiment 1

[0035] Use oil refinery scum as raw material to carry out oil sludge high-pressure three-phase separation treatment according to the following method, specifically as follows figure 1 Shown:

[0036] The first step of pretreatment: test and analyze the mixed sample of oil sludge to be treated, the test method is as follows, moisture content: national standard water-oil mixed system water content determination method --- "Moisture determination method of petroleum products" GB / T260 ; Sulfur content: "Determination of Sulfur Content in Petroleum Products (Oxygen Bomb Method)" GB / T388; Calorific value: "Determination of Calorific Value of Petroleum Products" GB / T384-1981 (1988). According to the above sludge detection results, add dehydrating agent, cationic demulsifier and additives to 1 ton of sludge to be separated, and mechanically stir until uniform;

[0037] The second step of high-pressure three-phase separation: the above-mentioned pretreated oil sludge is subjected to t...

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Abstract

The invention relates to a method for treating the waste, in particular to a sludge high-pressure three-phase separating method, comprising the following steps that: an oil sludge composite sample to be separated is tested, added with a dehydrating agent and additives according to the oil sludge test result and then mixed evenly; the oil sludge after the pretreatment undergoes three-phase separation in a high-pressure three-phase separator, pressure filtration is carried out under the high pressure of between 10 and 50 MPa, the filtrate is collected; when no filtrate flows out, the pressure is relieved and the material is discharged, the water content of the treated oil sludge can reach between 10 and 20 percent; the collected filtrate undergoes oil-water separation, the sewage is sent to a sewage treatment system for water treatment; waste oil can be comprehensively utilized after treatment; and filter residue can be taken as industrial secondary fuel to be comprehensively utilized. Compared with other oil sludge treatment technologies, the method has the characteristics of high separation efficiency, no secondary pollution, simple and convenient operation flow, high reliability, strong practicability and so on, and has obvious social benefits and economic benefits.

Description

technical field [0001] The present invention relates to waste treatment methods, especially sludge treatment methods. Background technique [0002] In the petrochemical industry and sewage treatment industry, a large amount of waste is mainly oily sludge, which contains a large amount of residual oil, benzene series, phenols and other odorous toxic substances and a large number of pathogenic bacteria. If the toxic and harmful substances that are difficult to degrade such as parasites and parasites are discharged directly without treatment, they will not only occupy a large amount of cultivated land, but also pollute the surrounding soil, water, and air, and will cause great harm to the human living environment. [0003] Oily sludge has the characteristics of large production, high oil content, high heavy oil components, few comprehensive utilization methods, and difficult treatment. In order to realize the thorough treatment and resource utilization of oil sludge, a lot of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00
Inventor 崔进发刘龙海代仁胜
Owner DALIAN DONGTAI INDAL WASTE TREATMENT
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