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Pre-treatment method prior to biochemical treatment of sewage containing water-soluble fatty acid salt

A fatty acid salt and biochemical treatment technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems such as the influence of the development of enterprises in the surrounding environment, the difficulty of removing high ammonia nitrogen, and the difficulty of reaching the standard of effluent, so as to solve the problem of wastewater containing organic salts, Effects of reducing biochemical treatment load and increasing income

Inactive Publication Date: 2014-01-01
SHANDONG PAINI CHEM
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Problems solved by technology

[0002] At present, there are many chemical companies in China. In the production process of such enterprises, a large amount of wastewater containing fatty amines and fatty acids will be produced. This type of wastewater belongs to high-concentration organic wastewater, and its main pollutants are COD and ammonia nitrogen. The surrounding environment of the enterprise and the development of the enterprise have a great impact
[0003] The current domestic treatment methods for this type of wastewater are mainly physicochemical and biochemical treatment methods, which are divided into many types, but they all have problems such as high treatment costs to varying degrees, high ammonia nitrogen is difficult to remove, and the effluent is difficult to meet the standard.

Method used

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Embodiment

[0014] The sewage generated by the production system is pumped into the sewage treatment tank so that the water level is at 2 / 3. Processing operations can be performed at room temperature. First, turn on the kettle to stir, and add a cationic salt dropwise into the kettle through the high-level tank, and the dropping amount is about 1%. Stir for 30 minutes, then stop stirring. Let stand for 1 hour. The clear liquid is released from the clear liquid outlet of the kettle body, and pumped into the biochemical treatment system for further treatment. The generated insoluble fatty acid salt is discharged from the thick slurry port, and discharged into the salt collection tank, and packed for takeaway.

[0015] This method not only better solves the problem of wastewater containing organic salts, but also its by-products can be sold as a product to increase income. It better avoids the traditional water treatment, eradicates a kind of pollution, and at the same time causes new po...

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Abstract

The invention relates to the technical field of sewage treatment, and in particular to a pre-treatment method prior to a biochemical treatment of sewage containing a water-soluble fatty acid salt. The pre-treatment method adopt sewage containing the water-soluble fatty acid salt as a raw material, and is characterized by comprising the following steps: pumping the sewage into a sewage treatment kettle; starting up a built-in mixing device in the kettle; dropping cation into the kettle from an elevated tank; mixing and standing; discharging out of the kettle from an outlet in the upper end a liquor, which is then pumped into the a biochemical treatment system for further treatment, and discharging the sediment from the bottom of the kettle. The technology is simple, greatly relieves the load of the follow-up biochemical treatment by reducing the COD content to 1% of the original value, so that problem of waste water containing organic salt is solved, meanwhile, the by-product can be sold as a product to increase the income.

Description

(1) Technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a pretreatment method before biochemical treatment of sewage containing water-soluble fatty acid salts. (2) Background technology [0002] At present, there are many chemical companies in China. In the production process of such enterprises, a large amount of wastewater containing fatty amines and fatty acids will be produced. This type of wastewater belongs to high-concentration organic wastewater, and its main pollutants are COD and ammonia nitrogen. The surrounding environment of the enterprise and the development of the enterprise have a great impact. [0003] The current domestic treatment methods for this type of wastewater are mainly physicochemical and biochemical treatment methods, which are divided into many types, but they all have problems such as high treatment costs to varying degrees, difficulty in removing high ammonia nitrogen, and difficulty in ...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 曲保伦卢学杰
Owner SHANDONG PAINI CHEM