A method of anaerobic-aerobic deep coupling treatment of organic wastewater with high solid content

A high solid content, organic wastewater technology, applied in aerobic and anaerobic process treatment, water treatment parameter control, chemical instruments and methods, etc., can solve problems such as lack, lethal cell damage, anaerobic reaction failure, etc., to achieve Improved impact load resistance, light suppression, and improved biogas output
CN110790378BActive Publication Date: 2022-04-19恩格拜(武汉)生态科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
恩格拜(武汉)生态科技有限公司
Publication Date
2022-04-19

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Abstract

A method for anaerobic-aerobic deep coupling treatment of high solid content organic wastewater includes: after the organic waste is crushed and screened, the filtered slurry is put into an anaerobic reaction unit, and biogas and biogas slurry are obtained by anaerobic fermentation; The oxygen effluent is passed into the solid-liquid separation unit for solid-liquid separation, and the separated biogas residue is returned to the anaerobic reaction unit through the sludge return pump; the separated biogas slurry enters the aerobic reaction unit, and undergoes a synchronous nitrification and denitrification process to remove nitrogen; Part of the effluent from the aerobic reaction unit flows back to the anaerobic reaction unit, where it is fully diluted and mixed with the original slurry of organic waste for anaerobic reaction, and the other part of the effluent enters the next treatment process or discharges up to the standard. The anaerobic effluent of the present invention enters the solid-liquid separation unit to separate suspended matter, and the effluent enters the aerobic unit to control the DO value in the water body of the aerobic unit to complete denitrification. After that, the aerobic effluent controls the reflux ratio and returns to the anaerobic unit again. Circular reaction, improve anaerobic biogas production rate, and at the same time, the quality of aerobic effluent is higher.
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Description

technical field

[0001] The invention relates to a method for anaerobic-aerobic deep coupling treatment of organic wastewater with high solid content, and belongs to the technical field of sewage treatment. Background technique

[0002] Anaerobic reactors are generally preferred for waste water treatment and resource utilization. However, since the reactants often contain a large amount of nitrogen-containing substances, during the anaerobic fermentation process, a large amount of protein will be transformed and decomposed, and a large amount of free ammonia nitrogen will be released, resulting in ammonia nitrogen. Accumulated, the ammonia nitrogen concentration often reaches above 2000mg / L. According to research, an important nutritional factor affecting the growth of methanogens is ammonia nitrogen. When the concentration of ammonia nitrogen is 50-200 mg / L, it is conducive to the anaerobic reaction; but when the concentration of ammonia nitrogen reaches 2000 mg / L or more, i...

Claims

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