Aquatic product processing wastewater treatment technology and device

Abstract

The invention relates to the field of environmental engineering sewage treatment, in particular to aquatic product processing wastewater treatment. An aquatic product processing wastewater treatment technology comprises an AnMBR (anaerobic membrane bioreactor) reaction, secondary phosphorus removal and a CWSBR (constant waterlevel sequencing batch reactor) reaction after pretreatment. By the treatment technology, a technical route is simple, pollutants in the processing wastewater can be effectively removed and the purpose of up-to-standard discharge of aquatic product processing wastewater after treatment is achieved; in addition, the treatment technology is easy to operate and easy to manage; by the treatment technology, a reliable, high-efficiency and stable technical approach is provided for the aquatic product processing wastewater treatment.

Description

technical field [0001] The invention relates to the field of environmental engineering sewage treatment, in particular to the treatment of aquatic product processing wastewater. Background technique [0002] With the development of the economy and the continuous improvement of people's living standards, fish meat is favored by consumers because of its extremely rich nutritional value, and at the same time it is a high-protein, low-fat animal food. Aquatic product processing wastewater is mainly produced in the cleaning sewage in the pre-treatment process of aquatic product processing and the thawed sewage in the post-treatment process. This kind of wastewater has a high content of organic matter and suspended solids, and there are many macromolecular organic substances such as protein and oil; the concentration of ammonia nitrogen and phosphorus is high, and it is difficult to meet the standards of nitrogen and phosphorus in the effluent; the water temperature is low, and th...

AI Technical Summary

Problems solved by technology

[0007] Disadvantages: There are many structures to be processed; an internal backflow system needs to be added, which increases operating costs

[0010] Disadvantages: low capacity and equipment utilization rate (generally less than 50%); complex operation, management and maintenance; high degree of self-control, high quality requirements for workers; few domestic engineering examples; general denitrification and phosphorus removal functions

[0021] Disadvantages: low volume utilization, discontinuous water discharge, complex operation control

[0027] Due to the unbalanced discharge of aquatic product processing wastewater, large fluctuations in water quality, and high concentrations of organic matter, nitrogen, and phosphorus in wastewater, although the above treatment methods have their own advantages, none of them can stably and effectively remove organic matter in aquatic product processing wastewater. , and the total phosphorus concentration in aquatic product processing wastewater is difficult to achieve the goal of effective removal through conventional biological phosphorus removal, that is, the discharge requirements of the "Integrated Wastewater Discharge Standard" (GB8978-2002)

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