Integrated deep treatment method and treatment device for wastewater containing formaldehyde and methanol

A technology for advanced treatment of waste water, applied in multi-stage water treatment, anaerobic digestion treatment, water/sewage treatment, etc., can solve the problems of substandard effluent water quality, many sewage lifting times, unstable system operation, etc., and achieve the goal of reducing sewage Increase the number of times, improve the efficiency of contact reaction, and facilitate the effect of advanced treatment

Pending Publication Date: 2017-10-31
JIANGSU DUBLE ENG +1
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Problems solved by technology

[0007] At present, the treatment methods of formaldehyde-containing wastewater in industry mainly include Fenton method, photocatalytic oxidation method, wet oxidation method, biological treatment method and lime method, etc., but these methods have the following technical problems: (1) The system is unstable, and the treated water The water quality often does not meet the standard and cannot be discharged stably; (2) The dosage is large, the reaction conditions are harsh, the sewage is raised frequently, and the operating cost is high; (3) The equipment requirements are high, the operation is not flexible, and the investment cost is high

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  • Integrated deep treatment method and treatment device for wastewater containing formaldehyde and methanol
  • Integrated deep treatment method and treatment device for wastewater containing formaldehyde and methanol

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Embodiment Construction

[0052]Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0053] Please refer to figure 1 with figure 2 , an integrated advanced treatment method for waste water containing formaldehyde and methanol, comprising the following steps:

[0054] a. Sewage first flows into the regulating tank 1 by itself, and adjusts the water volume and water quality to ensure that the follow-up treatment system can run stably and continuously, and the residence time is 6 to 8 hours;

[0055] b. ...

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Abstract

The invention relates to the technical field of wastewater treatment, in particular to an integrated deep treatment method and treatment device for wastewater containing formaldehyde and methanol. The treatment device comprises an adjusting tank, a Fenton oxidation tank, a neutralization tank, a hydrolysis acidification tank, a primary contact oxidation tank, a primary sedimentation tank, an ozone oxidation tank, a secondary contact oxidation tank, a coagulation-flocculation reaction tank, a secondary sedimentation tank, an intermediate water tank, an activated carbon filter and a clear water tank which are sequentially arranged along a water flow direction and also comprises a sludge tank used for storing sludge discharged by the primary sedimentation tank and the secondary sedimentation tank. The treatment device is low in operating cost, system operation is safe and reliable, and stable effluent quality and up-to-standard discharge can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to an integrated advanced treatment method and treatment device for waste water containing formaldehyde and methanol. Background technique [0002] As an important industrial raw material, formaldehyde is widely used in the fields of paint, coating, medicine and chemical industry. Due to its strong biological toxicity, the treatment of formaldehyde-containing wastewater is strictly regulated, and the development of its wastewater treatment technology is also highly valued by the industry. [0003] Sewage containing formaldehyde and methanol mainly comes from formaldehyde plant, methylal plant, paraformaldehyde and alcohol ether fuel plant: [0004] Formaldehyde device: from flue gas scrubber and air scrubber, with an average water volume of 3m 3 / h, the maximum water volume is 6m 3 / h, the main pollutant is SS: 200mg / l; [0005] Methylal plant: mainly from the bott...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F2305/026C02F2301/08C02F2101/34C02F3/28C02F3/02C02F1/78C02F1/66C02F1/722C02F1/52C02F1/5236C02F1/56C02F1/001C02F1/283Y02E50/30
Inventor 高甲义孙培军陈青春尚大春陈园园
Owner JIANGSU DUBLE ENG
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