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Skid-mounted sludge dewatering and de-oiling system and operation method thereof

A sludge dewatering and deoiling technology, applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve problems such as differences in climatic conditions, inability to use treatment methods, and resource utilization, etc. Achieve the effect of small footprint, short process and accelerated layering

Inactive Publication Date: 2017-09-08
JIANGSU GOLDEN GATE ENERGY & EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the production sites are widely distributed, and the climatic conditions in the production areas are significantly different, which determines that the same treatment method cannot be used for its treatment and resource utilization. Therefore, it is necessary to study suitable integrated technologies or combined processes for effective treatment of them.

Method used

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  • Skid-mounted sludge dewatering and de-oiling system and operation method thereof

Examples

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Effect test

Embodiment 1

[0024] A skid-mounted sludge dehydration and deoiling system, including a skid chassis, the skid chassis is provided with a control system, and the skid chassis is provided with an inlet pipe 1, a settling tank 2, a clear liquid overflow pipe 4, and a clear liquid tank 5, Liquid level gauge 6, clear liquid discharge pipeline 7, clear liquid pump 8, clear liquid return pipeline 9, clear liquid discharge pipeline 10, clear liquid injection centrifuge pipeline 11, sludge transport centrifuge pipeline 12, centrifuge 13, sewage Mud discharge pipeline 14, centrifuge liquid discharge pipeline 15, dosing box 16, medicament self-flow pipeline 17, injection metering pump 18, medicament injection pipeline 19, medicament injection pipeline bypass 20, the inlet pipeline 1 and the settling tank 2 The upper end communicates, and the dosing box 16 communicates with the injection metering pump 18 through the medicament self-flowing pipeline 17, and the injection metering pump 18 communicates wi...

Embodiment 2

[0031] The operation method of the above-mentioned skid-mounted sludge dewatering and deoiling system includes the following steps: the oily and watery sludge enters the settling tank 2 from the sludge inlet pipeline 1, the flocculant is stored in the dosing tank 16, and enters through the pharmaceutical artesian pipeline 17 The injection metering pump 18 is pressurized by the injection metering pump 18, injected into the settling tank 2 through the agent injection pipeline 19, and after opening the stirring device 3 for a period of time, the sludge and oil-water are automatically stratified, and when the clear liquid When the surface is higher than the overflow outlet, the clear liquid enters the clear liquid tank 5 from the clear liquid overflow pipe 4, and the clear liquid tank 5 is provided with a liquid level gauge 6. When the liquid level in the clear liquid tank 5 is higher than the liquid level gauge 6 When the liquid level is high, the clear liquid pump 8 starts, and t...

Embodiment 3

[0034] Based on the 30%wt of water and oil in the sludge discharged from the bottom of the electric desalination tank, the amount of flocculant added is about 1%wt. The sludge is removed from the centrifuge for centrifugal treatment, and at the same time, 0.5%wt flocculant is added to the pipeline. After the centrifuge treatment, the water and oil content of the discharged sludge is reduced to 0.5%, and the sludge is discharged outside.

[0035] To sum up, the system of the present invention has a simple structure and a good treatment effect on oily and watery sludge, and is suitable for popularization and application.

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Abstract

The invention discloses a skid-mounted sludge dewatering and de-oiling system and an operation method thereof. The system comprises a skid chassis, wherein a control system is arranged in the skid chassis; the skid chassis mainly comprises an inlet pipeline, a settling tank, a clear liquid tank, a liquid level meter, a clear liquid pump, a centrifuge, a dosing tank and an injection metering pump; after oil-containing and water-containing sludge enters the settling tank from the inlet pipeline, a flocculant and other drugs are added by the injection metering pump to accelerate layering of sludge and oil and water; clear liquid enters the clear liquid tank; the sludge enters the centrifuge; a part of clear liquid discharged by the clear liquid pump in the clear liquid tank enters the centrifuge and is centrifuged again together with the sludge; the sludge is discharged out of the system after concentration; and the clear liquid is returned to the clear liquid tank again. The skid-mounted sludge dewatering and de-oiling system provided by the invention adopts two ways of drug dosage and gravity settlement to accelerate the layering of oil-containing and water-containing sludge, and has advantages of high sludge dewatering efficiency and compact device in comparison with the prior art.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, in particular to a skid-mounted sludge dewatering and deoiling system and an operating method thereof. Background technique [0002] Oily sludge is a solid waste that is included in the "National Hazardous Waste List" and has always been an environmental protection problem for petroleum and petrochemical companies. Usually, oily sludge is in a solid or semi-fluid state, belonging to a heterogeneous multiphase dispersion system, mainly composed of crude oil, water, clay minerals, biological organic matter and chemical additives, etc. 20% to 30%, which has the value of energy material recovery and mineral regeneration. [0003] According to survey estimates, the annual production of oily sludge in China is about 1 million tons, mainly in oil fields (about 70%) and refining production (about 29%). From the perspective of composition and physical properties, various oily sludges are...

Claims

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Application Information

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IPC IPC(8): C02F11/14C02F11/12
CPCC02F11/14C02F11/127C02F2103/365C02F2209/005C02F2301/046
Inventor 刘祖虎
Owner JIANGSU GOLDEN GATE ENERGY & EQUIP CO LTD