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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

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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 the technical problems of high energy consumption, easy secondary pollution, long process and complicated treatment in the prior art.

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  • Treating method for oily sludge

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Embodiment 1

[0025] The treatment method of the present embodiment oily sludge comprises the following steps:

[0026] S1. Heat and stir the oily sludge, the heating temperature is 40°C, the stirring speed is 30r / min, stirring for 10min, and after standing for 0.5h, solid-liquid separation is carried out to obtain oily sludge and oily liquid;

[0027] S2, passing the oily liquid obtained in step S1 into a sewage treatment system for oil-water separation, and extracting and purifying the separated oil;

[0028] S3, adding 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, and the medicament is polyaluminum chloride accounting for 0.5% of the absolute dry weight of the oily sludge and accounting for 0.5% of the absolute dry weight of the oily sludge It is compounded with sodium persulfate with an absolute dry weight of 0.5%. After adding the medicament, stir at 30r / min for 5 minutes. The cond...

Embodiment 2

[0033] The treatment method of the present embodiment oily sludge comprises the following steps:

[0034] S1. Heat and stir the oily sludge, the heating temperature is 120°C, the stirring speed is 130r / min, stirring for 60min, and after standing for 4h, solid-liquid separation is carried out to obtain oily sludge and oily liquid;

[0035] S2, passing the oily liquid obtained in step S1 into a sewage treatment system for oil-water separation, and extracting and purifying the separated oil;

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

Embodiment 3

[0041] The treatment method of the present embodiment oily sludge comprises the following steps:

[0042]S1. Take 100L of oil sludge with a moisture content of 96.3% and an oil content of 1.8%, heat it to 70°C, stir and maintain it for 20 minutes, and the stirring speed is 120r / min. A large amount of oily matter is floating on the water surface. After standing for 1 hour, solidify liquid separation to obtain sludge and oily liquid;

[0043] S2, passing the oily liquid obtained in step S1 into a sewage treatment system for oil-water separation, and extracting and purifying the separated oil;

[0044] S3. Add medicaments to the oily sludge obtained in step S1 for conditioning. The medicaments are cationic polyacrylamide accounting for 1‰ of the absolute dry weight of the oily sludge, 5% polyferric chloride accounting for the absolute dry weight of the oily sludge, and 5% of the absolute dry weight of the oily sludge. It is compounded with 2% surfactant in absolute dry weight. A...

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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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