Treatment method of processing wastewater of Chinese galls

Abstract

The invention relates to a treatment method of the processing wastewater of Chinese galls. The method adopts the following five series process systems, i.e. a flocculation and sedimentation tank, a UFB (Ultra Fine Bright) system, an electrocoagulation system, an A/O (Anoxic/Oxic) system and an active carbon filtration system. The method is characterized by continuous water supply and continuous water discharging and has the advantages of stable treatment effect, high efficiency, simple operation and low operation cost.

Description

Technical field: [0001] The invention relates to a method for treating gallbladder pharmaceutical wastewater, in particular to a method for treating wastewater with high salt content, high chroma and high organic matter. Background technique: [0002] The pharmaceutical wastewater in the gallnut deep processing industry is wastewater with high salt content, high chroma, and high organic matter, mainly wastewater from the gallic acid production section (high concentration wastewater), and the effluent COD cr The concentration is generally above 20,000mg / L, and the effluent COD of the tangeridin section cr The concentration is generally above 5000mg / L, even if it is the mixed water and domestic sewage in each section, the effluent COD cr The concentration is generally above 5000mg / L. Gallic acid crude mother liquid wastewater contains a large amount of inorganic salts, mainly NaCl, if the concentration is too high, it will cause toxicity to microorganisms and seriously affec...

AI Technical Summary

Problems solved by technology

The micro-electrolysis materials used in the general micro-electrolysis process are iron filings and charcoal, which need to be activated by adding acid and alkali before use. It is easy to passivate and harden during use, and because iron and charcoal are in physical contact, it is easy to form an isolation layer between them. It makes micro-electrolysis unable to continue and loses its function, which leads to frequent replacement of micro-electrolysis materials, which not only has a large workload and high cost, but also affects the treatment effect and efficiency of wastewater

In addition, the small surface area of ​​micro-electrolysis materials also requires a long time for wastewater treatment, so the current micro-electrolysis process has not been well promoted, and the risk of putting it into actual projects is relatively high

[0007] The above-mentioned conventional treatment methods have their own disadvantages. There is no successful treatment of this wastewater at home and abroad. It is necessary to develop a more perfect treatment method for wastewater with high salt content, high chroma, and high organic matter.

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