Highly effective anaerobic reaction water treatment method and device for kitchen garbage

Abstract

The invention discloses an anoxybiotic-anaerobic reactor for treating garbage and waste water of eat hutches and a method of waste water treatment using the reactor. The reactor sequentially comprises a reducing pipe line, an anoxybiotic acidification tank, an impulse water distributor, an anaerobic reactor and the like. The reactor used to treat the garbage and waste water of eat hutches can high-effectively entrap SS and avoid suspended matters blocking the anaerobic reactor and the pipeline, under the reaction condition of 35+-3DEG C, the removal rate of COD is 85%, the removal rate of BOD is 90%, the removal rate of SS is 98%, and simultaneously high-quality methane gas is produced.

Description

technical field [0001] The invention relates to a high-efficiency anaerobic reaction water treatment technology, in particular to a high-efficiency anaerobic reaction water treatment method and a device for kitchen waste. technical background [0002] With the acceleration of urbanization, people's living standards have improved significantly, and the catering service industry has developed rapidly. However, due to our country's inherent living and eating habits and some waste phenomena, a large amount of kitchen waste is generated. Food waste is a kind of organic waste that is easy to ferment and deteriorate. In the past, it was often transported directly to rural areas as feed for pigs and chickens. Due to the lack of disinfection and harmless treatment, food waste was directly fed to pigs, chickens and other livestock and poultry. It is easy to cause the spread of pathogenic bacteria and homologous biological contamination. These "garbage pigs" and "garbage chickens" wil...

AI Technical Summary

Problems solved by technology

[0007] 1. The wastewater contains fibrous objects, hard particles and soft debris. When the wastewater enters the water distribution system, it is easy to foul the water distribution port, causing difficulty in water distribution and paralyzing the system, which in turn causes blockage of the anaerobic reactor.

[0008] 2. Food residues and other suspended solids are high in the food waste wastewater. If the common water distribution system is used, it is easy to form a bias flow during the rising process of the wastewater, resulting in excessive local load and lower removal efficiency of the entire system.

[0009] 3. The solution is acidic. If it enters the anaerobic reactor directly, it will inhibit the growth of methanogenic bacteria, so that the reaction will only remain in the acidification stage and cannot carry out deep methanation reaction.

[0010] 4. After running for a period of time, the water outlet of the anaerobic reactor will have serious fouling and blockage, making it difficult to discharge water from the water outlet pipe

[0011] 5. The key part of the anaerobic digester such as the upflow anaerobic sludge reactor bed (UASB), such as the three-phase separator, the separation effect of mud, water and gas is not good, and the sludge cannot be effectively returned to the sedimentation area. It flows out together with the water, causing the loss of anaerobic sludge, and at the same time, the content of suspended solids in the effluent also increases

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