A treatment process for high-concentration organic wastewater from a liquor factory

Abstract

The invention discloses a liquor factory high-concentration organic wastewater treatment technology and an apparatus therefor, and belongs to the technical field of waste treatment in the liquor field. The technology comprises the following steps: pre-treating high-concentration wastewater, pre-acidifying, carrying out anaerobic treatment, and allowing the obtained wastewater to enter a comprehensive wastewater adjustment pool; pre-treating the obtained low-concentration wastewater, filtering, and allowing the filtered low-concentration wastewater to enter a CASS pool for aerobic biological treatment; and processing the obtained sludge. The technology has the advantages of stable treatment effect, low running cost, simple process flow, small occupied area, investment saving, realization of the reuse rate reaching above 95% after the wastewater treatment, and true realization of zero emission.

Description

Technical field

[0001] The invention belongs to the treatment of waste water in the field of liquor, in particular the treatment of high-concentration organic waste water generated during the production of liquor, and specifically relates to a process for treating high-concentration organic waste water from a liquor factory. Background technique

[0002] Liquor production uses water as the medium, and the waste water produced can be divided into two parts, one part is high-concentration organic waste water, including distillation pot bottom water, fermentation blind ditch water, distillation section surface flushing water, underground wine storage leakage water "sand" and The sorghum washing water and soaking water during the "rough sand" process is a colloidal solution with high organic matter and suspended matter. The other part is low-concentration organic wastewater, including cooling water and cleaning water, which is the main body of wastewater. Can be recycled. According ...

Examples

Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with specific embodiments.

[0019] Quality indicators of wastewater discharged by a liquor company:

[0020] CODcr:~24000mg / L, BOD5:~15000mg / L, SS:~620mg / L, pH: 3.5~4.0

[0021] The treatment process of the present invention is:

[0022] The high-concentration wastewater produced in the workshop is directly sent to the pre-sedimentation tank I by the waste water lifting pump at the outlet of the workshop to separate suspended particles in the rotary screen. The effluent of the sedimentation tank I is discharged into the regulating tank, and a thermometer is set in the regulating tank. When the temperature exceeds 40 ℃, use the cooling circulating water pump to lift to the cooling tower for cooling, and the effluent from the cooling tower is discharged into the pre-acidification tank, and the water temperature in the pre-acidification tank is controlled at 35~38℃ and the pH is between 6.5~8.5. The e...

Technical field

[0001] The invention belongs to the treatment of waste water in the field of liquor, in particular the treatment of high-concentration organic waste water generated during the production of liquor, and specifically relates to a process for treating high-concentration organic waste water from a liquor factory. Background technique

[0002] Liquor production uses water as the medium, and the waste water produced can be divided into two parts, one part is high-concentration organic waste water, including distillation pot bottom water, fermentation blind ditch water, distillation section surface flushing water, underground wine storage leakage water "sand" and The sorghum washing water and soaking water during the "rough sand" process is a colloidal solution with high organic matter and suspended matter. The other part is low-concentration organic wastewater, including cooling water and cleaning water, which is the main body of wastewater. Can be recycled. According ...

Examples

Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with specific embodiments.

[0019] Quality indicators of wastewater discharged by a liquor company:

[0020] CODcr:~24000mg / L, BOD5:~15000mg / L, SS:~620mg / L, pH: 3.5~4.0

[0021] The treatment process of the present invention is:

[0022] The high-concentration wastewater produced in the workshop is directly sent to the pre-sedimentation tank I by the waste water lifting pump at the outlet of the workshop to separate suspended particles in the rotary screen. The effluent of the sedimentation tank I is discharged into the regulating tank, and a thermometer is set in the regulating tank. When the temperature exceeds 40 ℃, use the cooling circulating water pump to lift to the cooling tower for cooling, and the effluent from the cooling tower is discharged into the pre-acidification tank, and the water temperature in the pre-acidification tank is controlled at 35~38℃ and the pH is between 6.5~8.5. The e...

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