Treating method for oily sludge

A treatment method and sludge technology, which are applied in sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc., can solve the problems of high energy consumption, secondary pollution, complicated treatment, etc. To achieve the effect of simple flue gas treatment, less pollutants, and simplified process flow

Inactive Publication Date: 2017-07-18
安徽省通源环境节能股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a treatment method for oily sludge, which solves

Method used

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  • Treating method for oily sludge

Examples

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Example Embodiment

[0024] Example 1:

[0025] The oily sludge treatment method of this embodiment includes the following steps:

[0026] S1. Heat and stir the oily sludge at a heating temperature of 40°C, a stirring speed of 30r / min, stir for 10 minutes, and stand for 0.5h before performing solid-liquid separation to obtain oily sludge and oily liquid;

[0027] S2, the oily liquid obtained in step S1 is passed into the sewage treatment system for oil-water separation, and the separated oil is extracted and purified;

[0028] S3. Add medicament to the oily sludge obtained in step S1 for conditioning. The amount of medicament added is 1% of the absolute dry weight of the oily sludge. The medicament is polyaluminum chloride which accounts for 0.5% of the absolute dry weight of the oily sludge and accounts for the oily sludge. It is compounded with 0.5% of absolute dry weight of sodium persulfate. After the agent is added, it is stirred at 30r / min and stirred for 5 minutes. The refined sludge is dehydrated ...

Example Embodiment

[0032] Example 2:

[0033] The oily sludge treatment method of this embodiment includes the following steps:

[0034] S1. Heating and stirring the oily sludge at a heating temperature of 120°C, a stirring speed of 130r / min, stirring for 60 minutes, standing for 4 hours, and then performing solid-liquid separation to obtain oily sludge and oily liquid;

[0035] S2, the oily liquid obtained in step S1 is passed into the sewage treatment system for oil-water separation, and the separated oil is extracted and purified;

[0036] S3. Add chemicals to the oily sludge obtained in step S1 for conditioning. The chemicals are polyacrylamide accounting for 5‰ of the absolute dry weight of the oily sludge, ferrous sulfate accounting for 2.5% of the absolute dry weight of the oily sludge, and absolute dry weight of the oily sludge. 5% by weight polyaluminum chloride, 4% by weight of oily sludge, polyferric sulfate, 1% by weight of oily sludge, chitosan, and 3% by weight of oily sludge, surfactants ...

Example Embodiment

[0040] Example 3:

[0041] The oily sludge treatment method of this embodiment includes the following steps:

[0042] S1. Take 100L of sludge with a water content of 96.3% and an oil content of 1.8%. Heat the temperature to 70°C, stir and maintain for 20min, and the stirring speed is 120r / min. A large amount of oily matter floats on the water surface. Liquid separation to obtain sludge and oily liquid;

[0043] S2, the oily liquid obtained in step S1 is passed into the sewage treatment system for oil-water separation, and the separated oil is extracted and purified;

[0044] S3. Add medicament to the sludge obtained in step S1 for conditioning. The medicament is cationic polyacrylamide which accounts for 1‰ of the absolute dry weight of the oily sludge, 5% polyferric chloride which accounts for the absolute dry weight of the oily sludge, and the oily sludge. It is compounded with 2% surface active agent of absolute dry weight. After the agent is added, it is stirred at 100r / min. Afte...

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Abstract

The invention provides a treating method for oily sludge and relates to the technical field of oily sludge treatment. The treating method provided by the invention comprises the following steps: heating and stirring oily sludge, standing and then performing solid-liquid separation, thereby acquiring oily mud and oily liquid; introducing the oily liquid into a sewage treatment system for performing oil-water separation, and extracting and purifying the separated oil; adding a reagent into the oily mud for tempering; after tempering, deeply dewatering, thereby acquiring dewatered oily mud and filtrate; performing oil-water separation on the filtrate; performing drying treatment and pyrolysis carbonizing treatment on the dewatered oily mud. The treatment method provided by the invention is simple, convenient and efficient and can realize the reduction, harmless and recycling treatment of the oily sludge, the whole treating process flow operation occupies less area and the investment cost is low.

Description

technical field [0001] The invention relates to the technical field of oily sludge treatment, in particular to a treatment method for oily sludge. Background technique [0002] A large amount of waste oil sludge will be produced in the process of oil extraction, storage, production and processing. These oil sludges are huge and contain not only oil resources, but also a large amount of toxic and harmful substances that are difficult to degrade, such as radioactive elements, dioxins, and pathogenic bacteria. The composition of oil sludge is extremely complex, which varies with geological conditions and production processes, and is generally composed of water, soil, oily organic matter, etc. Oil sludge mainly has the following characteristics: high water content and large volume; complex composition and difficult treatment; contains a large amount of dirty oil and combustible substances; most of the harmful components exceed the emission standards. With the increasingly ten...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/14C02F11/10C09K17/06C09K17/00B01J20/20C02F1/26C09K101/00C09K109/00
Inventor 武艳司恩良徐云辉张二杨熊霞杨明柳勇汪国成王金森张旭东张娜
Owner 安徽省通源环境节能股份有限公司
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