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Process for treating industrial sewage

A technology for industrial sewage and treatment methods, which is applied in water/sewage treatment, water/sludge/sewage treatment, separation methods, etc., can solve the problem of insufficient utilization of industrial wastewater, high industrial wastewater treatment costs, and high sewage treatment costs. problems, to achieve the effect of optimizing economic benefits, reducing preparation costs, and increasing combustion value

Inactive Publication Date: 2006-09-27
淄博天工石化工程咨询有限公司
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Problems solved by technology

At the same time, oil refineries, chemical fertilizer plants, chemical plants, and paper mills all produce a large amount of industrial wastewater in production, such as oily wastewater, sulfur-containing wastewater, black liquor, etc., and these industrial wastewater treatment costs are high, such as black liquor from paper mills. It is incinerated after adding accompanying combustion oil, and it is restricted by environmental protection requirements when it is discharged
On the one hand, the preparation of water coke slurry and coal water slurry requires a large amount of fresh water; on the other hand, a large amount of industrial wastewater cannot be fully utilized, and the cost of sewage treatment is high

Method used

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  • Process for treating industrial sewage

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Embodiment Construction

[0020] figure 1 The sources of water for four kinds of liquid fuels (water coke slurry or coal water slurry) are indicated in . Wherein mode (3) is prior art mode.

[0021] Method (1) is oily sewage, which first undergoes oil-water separation to control the oil content in the sewage below 500ppm, and then replaces fresh water as the preparation of liquid fuel.

[0022] Method (2) is the preparation of sulfur-containing sewage, adding calcium-based desulfurizer, and then replacing fresh water as liquid fuel.

[0023] Mode (4) is the preparation of paper mill black liquor, which directly replaces fresh water as liquid fuel.

[0024] The above-mentioned industrial sewage replaces fresh water, which can be completely replaced or partially replaced. When all of them are replaced, the dosage is equivalent to that of fresh water, and only needs to meet the viscosity requirement of liquid fuel. The preparation method of liquid fuel remains unchanged.

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Abstract

Disclosed is a process for treating industrial sewage characterized by using industrial sewage as water for the preparation of coke water slurry or water coal slurry liquid fuel in place of fresh water. The invention realizes the integration of industrial sewage treatment and the preparation of coke water slurry and water coal slurry.

Description

technical field [0001] The invention relates to a treatment method for industrial sewage. Background technique [0002] At present, the preparation technology of water coke slurry (using petroleum coke as raw material) and coal water slurry (using water coal powder as raw material) has been mature and widely promoted. As a clean liquid fuel, water coke slurry and coal water slurry are replacing Fuel for oil fired boilers. In the preparation process of water coke slurry and coal water slurry, fresh water is used as the carrier, and the water consumption is 30%, so the water consumption is relatively large. At the same time, oil refineries, chemical fertilizer plants, chemical plants, and paper mills all produce a large amount of industrial wastewater in production, such as oily wastewater, sulfur-containing wastewater, black liquor, etc., and these industrial wastewater treatment costs are high, such as black liquor from paper mills. It is incinerated after adding accompany...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/40
Inventor 张绪莹梁文坚朱传芳杨纯麟于兴建高灼宣
Owner 淄博天工石化工程咨询有限公司
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