Anaerobic reactor for treating waste water containing emulsified liquid

Abstract

The invention relates to an anaerobic reactor for treating waste water containing emulsified liquid. The height-diameter ratio of a tank body is greater than 3; an inlet water distributor is arranged at the bottom part of the tank body; the anaerobic reactor is provided with a granular sludge region which is suspended at the lower part of the tank body and a floccus sludge region which is suspended at the upper part of the granular sludge region; the surface loading of a deposit chamber of a triphase separator is not higher than 0.5m<3>/m<2>.h; and an outer circulating system is adopted. Because of the coexistence of the granular sludge region and the floccus sludge region of the anaerobic reactor, the COD (chemical oxygen demand) removal rate of the waste water containing the emulsified liquid is improved to more than 60%, the subsequent waste water processing technology pressure is reduced, the total effluent quality of a whole waste water treating system can reach the standard, and the operation cost of the whole waste water treating system is lowered.

Description

technical field [0001] The invention belongs to the field of sewage treatment equipment, and relates to an anaerobic reactor, in particular to an anaerobic reactor for treating emulsion-containing wastewater. Background technique [0002] Anaerobic reactor is a biological treatment method widely used in the treatment of organic pollutants in wastewater due to its low operating cost, simple operation, and resistance to certain influent shock loads. At present, the anaerobic reactors used in the market include granular sludge anaerobic reactors (such as UASB, EGSB, IC, etc.), flocculent sludge anaerobic reactors (upflow type, horizontal flow type, etc.) and anaerobic filters. Wait. [0003] The wastewater produced by mechanical processing and steel cold rolling industry contains a large amount of emulsion wastewater, and the biodegradability of this wastewater is generally relatively low: BOD5:COD is between 0.10-0.25. At present, the treatment process for this kind of waste...

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Problems solved by technology

[0006] The present invention proposes an anaerobic reactor for treating emulsion wastewater in order to solve the problems in the above-mentioned prior art that the low COD removal rate causes too much pressure in the subsequent sewage treatment process, the total effluent water quality cannot be stably up to the standard, and the operating cost is high. , to improve the COD removal rate of emulsion-containing wastewater, thereby reducing the pressure of subsequent sewage treatment processes, ensuring that the total effluent quality is stable and up to standard, and reducing the operating cost of the entire wastewater treatment system

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