Method for treating industrial waste water

A treatment method and technology for industrial wastewater, applied in the direction of flocculation/sedimentation water/sewage treatment, combustion method, dehydration/drying/concentrated sludge treatment, etc., can solve the problem of immature membrane separation technology and adsorption process, ion exchange method High cost, failure to achieve treatment effect and other problems, to achieve good wastewater treatment effect, high-efficiency flocculation effect, and little effect on pH value

Inactive Publication Date: 2010-02-10
梁旭
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Problems solved by technology

Ion exchange method is costly and only suitable for large-scale enterprises; membrane separation technology and adsorption method are not mature enough, and the operation is complicated; and simply using one technology to treat industrial wastewater cannot achieve the ideal treatment effect

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  • Method for treating industrial waste water

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Embodiment Construction

[0008] The present invention adopts the technique of combining physics and chemistry to process petroleum industry waste water, and the influent water quality is shown in Table 1, and its specific steps are:

[0009] (1) The waste water enters the grid first, the inclination angle of the grid is 60°, and the distance between the grid bars is 15 mm. When the waste water flows through, the large pollutants in a suspended state are intercepted by the grid bars and removed from the waste water;

[0010] (2) Effluent enters the grit chamber again to remove inorganic particles, and the waste water residence time is 3 hours;

[0011] (3) The effluent enters the regulating tank to keep the water quality and water quantity relatively stable to ensure the stable operation of the follow-up treatment system, and the residence time is 2 hours;

[0012] (4) The effluent enters the coagulation reaction tank again, and the coagulant polyaluminum chloride (PAC) is added therein to purify the w...

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Abstract

The invention discloses a method for treating industrial waste water, which belongs to the technical field of environmental protection and particularly relates to a method for treating industrial waste water. The invention provides a method for treating industrial waste water, which is simple in operation and excellent in treatment effect on petrochemical waste water and ensures that the effluentis discharged after reaching standards. The invention adopts a technical scheme that: the method combines physical and chemical processes and mainly comprises pretreatment, chemical treatment and sludge dewatering and burning. The pretreatment is carried out by using a grid, a grit tank and an adjusting pond, wherein sewage first passes through the grid to remove large suspended matters, then enters the grit tank for sand setting and finally enters the adjusting pond, and at the same time, air stirring is adopted in the adjusting tank to balance water quality and prevent sludge sedimentation;the chemical treatment is carried out by a coagulating sedimentation method, namely, a aluminium polychlorid (PAC) coagulant is used to purify the waste water; and a sludge treatment system adopts concentration, dewatering and burning processes to radically treat sludge and eliminate secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a treatment method for industrial waste water. Background technique [0002] Wastewater discharged during industrial production, including process water, machine cooling water, flue gas washing water, equipment and site cleaning water, etc. The pollution caused by industrial wastewater mainly includes: organic aerobic substance pollution, chemical poison pollution, inorganic solid suspended matter pollution, heavy metal pollution, acid pollution, alkali pollution, plant nutrient pollution, heat pollution, pathogen pollution, etc. Many pollutants are coloured, odorous or prone to foaming, so industrial effluents often have an unattractive appearance. According to the nature of the main pollutants contained, industrial wastewater is usually divided into: organic wastewater, inorganic wastewater, mixed wastewater containing both organic and inorganic su...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F11/12F23G7/00
Inventor 梁旭
Owner 梁旭
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