High-concentration organic wastewater direct deep purification method

Abstract

The invention relates to a high-concentration organic wastewater direct deep purification method. The method specifically comprises the following steps: (1) reinforced precipitation treatment; (2) rapid filtration of suspended matter precipitates; (3) pH value regulation; (4) hydrolysis and acidification: wastewater with the regulated pH value enters a water distribution unit, and a biofilm colonization packing material is arranged in the water distribution unit to reinforce the anaerobic hydrolysis and acidification effect of the wastewater; and (5) biological filter bed treatment. By providing a combined process composed of constructing a water distribution bed, an air distribution bed and an air-water backwashing bed of a biological filter bed, arranging a biological filter bed temperature regulation and control system, and combining the biological filter bed with a reinforced precipitation unit, a suspended matter precipitate rapid filtration unit and other units, the invention proposes a rapid low-cost treatment method for high-concentration high ammonia-nitrogen organic wastewater.

Description

technical field [0001] The invention relates to the technical field of ecology and environmental protection, in particular to a method for direct deep purification of high-concentration organic wastewater. Background technique [0002] High-concentration organic wastewater generally refers to wastewater discharged from livestock and poultry breeding, landfill leachate, papermaking, leather, and food industries with a COD concentration of more than 2000 mg / l or even tens of thousands or hundreds of thousands, and an ammonia nitrogen concentration of more than 1000 mg / l. These wastewaters contain a large amount of organic matter such as carbohydrates, fats, proteins, cellulose, etc., and the composition is complex. Extremely high, severe odor, pungent stench, if discharged directly, it will have a huge impact on the surrounding environment. [0003] According to different treatment principles, it can be divided into three categories of treatment methods: physical and chemical...

AI Technical Summary

Problems solved by technology

For example, livestock and poultry breeding wastewater pollution, which accounts for more than 80% of agricultural pollution sources, is a typical organic wastewater pollution with high COD and high ammonia nitrogen. However, it is obviously inappropriate to use industrial pollution control methods in this low-value-added agricultural economy. Therefore, we provide A technology that combines physical and chemical methods with biological treatment methods that can meet treatment standards and operate stably at low cost has become a technical problem that those skilled in the art need to solve urgently

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