Process for preparing biogas from waste water from reconstituted tobacco

Abstract

The invention discloses a process for biogas preparation with reconstituted tobacco waste water treatment. The process for biogas preparation with the reconstituted tobacco waste water treatment comprises the steps of waste water collection, waste water pretreatment, generation of biogas and post-treatment of discharging. Waste water generated during a process of reconstituted tobacco production contains large amount of chemical compounds containing chemical elements of nitrogen, phosphorus, sulfur and the like, and the process of biogas generation enables the waste water to meet sewage drainage standards. The process for biogas preparation with the reconstituted tobacco waste water treatment can sufficiently consume the biomass energy of the waste water generated during reconstituted tobacco production and generate biogas as well, the generated biogas can be recycled as new energy, the post-treatment waste fluid can be used as a greening water source, and the processed sludge can be used as organic mixed fertilizer; therefore, energy saving and environmental protection and double benefits of environment and economy can be achieved.

Description

technical field

[0001] The invention relates to a waste water treatment process, in particular to a process for preparing biogas from reconstituted tobacco waste water. Background technique

[0002] Reconstituted tobacco leaf wastewater contains organic substances such as carbohydrates, proteins, and lignin. These substances exist in the sewage in a suspended or dissolved state and can be decomposed by the biochemical action of microorganisms. Oxygen is consumed during the decomposition process, so they are called oxygen-depleting pollutants. If not dealt with in time, such pollutants can reduce dissolved oxygen in water and affect the growth of aquatic organisms. After the dissolved oxygen in the water is exhausted, the organic matter undergoes anaerobic decomposition, producing unpleasant odors such as hydrogen sulfide, ammonia and mercaptans, further deteriorating the water quality. The composition of organic matter in water is very complex, and the concentration of oxy...

Examples

Embodiment Construction

[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0018] see figure 1 , a process for preparing biogas from waste water from reconstituted tobacco leaves, the process steps are as follows:

[0019] (1) Wastewater collection: Wastewater generated during the production of reconstituted tobacco leaves includes high-concentration wastewater and production wastewater. Abnormal discharge), water washing evaporator waste liquid, production wastewater includes slurry, white water, and pump sealing water discharged during the production of reconstituted tobacco leaves, and the wastewater contains solid waste residue. The high-concentration wastewater enters the wastewater collection tank. After the prod...

technical field

[0001] The invention relates to a waste water treatment process, in particular to a process for preparing biogas from reconstituted tobacco waste water. Background technique

[0002] Reconstituted tobacco leaf wastewater contains organic substances such as carbohydrates, proteins, and lignin. These substances exist in the sewage in a suspended or dissolved state and can be decomposed by the biochemical action of microorganisms. Oxygen is consumed during the decomposition process, so they are called oxygen-depleting pollutants. If not dealt with in time, such pollutants can reduce dissolved oxygen in water and affect the growth of aquatic organisms. After the dissolved oxygen in the water is exhausted, the organic matter undergoes anaerobic decomposition, producing unpleasant odors such as hydrogen sulfide, ammonia and mercaptans, further deteriorating the water quality. The composition of organic matter in water is very complex, and the concentration of oxy...

Examples

Embodiment Construction

[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0018] see figure 1 , a process for preparing biogas from waste water from reconstituted tobacco leaves, the process steps are as follows:

[0019] (1) Wastewater collection: Wastewater generated during the production of reconstituted tobacco leaves includes high-concentration wastewater and production wastewater. Abnormal discharge), water washing evaporator waste liquid, production wastewater includes slurry, white water, and pump sealing water discharged during the production of reconstituted tobacco leaves, and the wastewater contains solid waste residue. The high-concentration wastewater enters the wastewater collection tank. After the prod...

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