Process device for waste water generated in tobacco sheet production

Abstract

The invention relates to a process device for waste water generated in tobacco sheet production. The process device comprises a machinery coarse screen collecting tank, a rotary grillage machine, a floatation tank, a primary decalcification reaction tank, a secondary decalcification reaction tank, a coagulating basin, a primary settling tank, a regulating tank, a hydrolysis acidification pool, a UASB (upflow anaerobic sludge blanket) anaerobic pool, an electrolysis machine a, an anoxic pool, an aerobiotic pool, a medium settling tank, an electrolysis machine b, an MBR (membrane biological reactor) system, an electrolysis disinfection tank, a sludge tank, a sludge dewatering tank, an accident pool, a gas collecting device and a methane storing tank. The process device is based on the combination of a chemical decalcification technology, a biochemical technology, an electrochemical technology and an MBR technology, thus having low cost and high efficiency, and the discharged waste water reaches the standard.

Description

[0001] The present invention relates to a treatment device for tobacco sheet production wastewater, in particular to a treatment device for tobacco sheet production wastewater and tobacco production wastewater based on chemical decalcification technology, biochemical technology, electrochemical technology and MBR technology, which belongs to environmental engineering in the field of water pollution control. Background technique

[0002] During the production of tobacco leaves, the raw materials cannot be fully utilized. During the production process of tobacco from primary processing to cigarettes, there will be scraps accounting for about 1 / 3 of the total amount of raw tobacco materials. These tobacco scraps cannot be directly used as The raw material is again made into a cigarette product. In order to reduce the generation of waste and realize the comprehensive utilization of debris, tobacco sheet technology came into being. Tobacco sheet, also known as reconstituted tobacc...

Examples

Embodiment 1

[0037] 2000 tons / day tobacco sheet production wastewater treatment method.

[0038] The water quality indicators of the tobacco flake production wastewater are shown in Table 1 after determination.

[0039] Table 1 Water quality indicators of wastewater from tobacco flake production

[0040] serial number project unit measured value serial number project unit measured value 1 BOD 5 mg / L 5800 5 Chroma times 15000 2 COD Cr mg / L 25000 6 Ca 2+ mg / L 200 3 SS mg / L 15000 7 water temperature ℃ 50 4 pH value 6.2

[0041] (1) Slag removal

[0042] Wastewater from tobacco flake production is collected by pipelines and then discharged into mechanical coarse grid pool 1. Coarse grids are set in the pool to isolate and remove medium and coarse floating objects in the sewage to prevent subsequent processing equipment from clogging, and then through the lifting pump 22, Elevate the waste water f...

Embodiment 2

[0063] The treatment method of 5000 tons / day tobacco flake production wastewater.

[0064] The water quality indicators of the tobacco sheet production wastewater were determined and shown in Table 3.

[0065] Table 3 Water quality indicators of wastewater from tobacco flake production

[0066] serial number project unit measured value serial number project unit measured value 1 BOD 5 mg / L 2000 5 Chroma times 25000 2 COD Cr mg / L 8000 6 Ca 2+ mg / L 300 3 SS mg / L 6200 7 water temperature ℃ 55 4 pH value 6

[0067] (1) Slag removal

[0068] Wastewater from tobacco flake production is collected by pipelines and then discharged into mechanical coarse grid pool 1. Coarse grids are set in the pool to isolate and remove medium and coarse floating objects in the sewage to prevent subsequent processing equipment from clogging, and then through the lifting pump 22, Elevate the waste water fr...

Embodiment 3

[0089] 8000 tons / day tobacco sheet production waste water recycling method.

[0090] The water quality indicators of the tobacco sheet production wastewater were determined and shown in Table 5.

[0091] Table 5 Water quality indicators of wastewater from tobacco flake production

[0092] serial number project unit measured value serial number project unit measured value 1 BOD 5 mg / L 600 5 Chroma times 20000 2 COD Cr mg / L 2000 6 Ca 2+ mg / L 400 3 SS mg / L 1000 7 water temperature ℃ 50 4 pH value 6.5

[0093] (1) Slag removal

[0094] Wastewater from tobacco flake production is collected by pipelines and then discharged into mechanical coarse grid pool 1. Coarse grids are set in the pool to isolate and remove medium and coarse floating objects in the sewage to prevent subsequent processing equipment from clogging, and then through the lifting pump 22, Elevate the waste water from to...

[0001] The present invention relates to a treatment device for tobacco sheet production wastewater, in particular to a treatment device for tobacco sheet production wastewater and tobacco production wastewater based on chemical decalcification technology, biochemical technology, electrochemical technology and MBR technology, which belongs to environmental engineering in the field of water pollution control. Background technique

[0002] During the production of tobacco leaves, the raw materials cannot be fully utilized. During the production process of tobacco from primary processing to cigarettes, there will be scraps accounting for about 1 / 3 of the total amount of raw tobacco materials. These tobacco scraps cannot be directly used as The raw material is again made into a cigarette product. In order to reduce the generation of waste and realize the comprehensive utilization of debris, tobacco sheet technology came into being. Tobacco sheet, also known as reconstituted tobacc...

Examples

Embodiment 1

[0037] 2000 tons / day tobacco sheet production wastewater treatment method.

[0038] The water quality indicators of the tobacco flake production wastewater are shown in Table 1 after determination.

[0039] Table 1 Water quality indicators of wastewater from tobacco flake production

[0040] serial number project unit measured value serial number project unit measured value 1 BOD 5 mg / L 5800 5 Chroma times 15000 2 COD Cr mg / L 25000 6 Ca 2+ mg / L 200 3 SS mg / L 15000 7 water temperature ℃ 50 4 pH value 6.2

[0041] (1) Slag removal

[0042] Wastewater from tobacco flake production is collected by pipelines and then discharged into mechanical coarse grid pool 1. Coarse grids are set in the pool to isolate and remove medium and coarse floating objects in the sewage to prevent subsequent processing equipment from clogging, and then through the lifting pump 22, Elevate the waste water f...

Embodiment 2

[0063] The treatment method of 5000 tons / day tobacco flake production wastewater.

[0064] The water quality indicators of the tobacco sheet production wastewater were determined and shown in Table 3.

[0065] Table 3 Water quality indicators of wastewater from tobacco flake production

[0066] serial number project unit measured value serial number project unit measured value 1 BOD 5 mg / L 2000 5 Chroma times 25000 2 COD Cr mg / L 8000 6 Ca 2+ mg / L 300 3 SS mg / L 6200 7 water temperature ℃ 55 4 pH value 6

[0067] (1) Slag removal

[0068] Wastewater from tobacco flake production is collected by pipelines and then discharged into mechanical coarse grid pool 1. Coarse grids are set in the pool to isolate and remove medium and coarse floating objects in the sewage to prevent subsequent processing equipment from clogging, and then through the lifting pump 22, Elevate the waste water fr...

Embodiment 3

[0089] 8000 tons / day tobacco sheet production waste water recycling method.

[0090] The water quality indicators of the tobacco sheet production wastewater were determined and shown in Table 5.

[0091] Table 5 Water quality indicators of wastewater from tobacco flake production

[0092] serial number project unit measured value serial number project unit measured value 1 BOD 5 mg / L 600 5 Chroma times 20000 2 COD Cr mg / L 2000 6 Ca 2+ mg / L 400 3 SS mg / L 1000 7 water temperature ℃ 50 4 pH value 6.5

[0093] (1) Slag removal

[0094] Wastewater from tobacco flake production is collected by pipelines and then discharged into mechanical coarse grid pool 1. Coarse grids are set in the pool to isolate and remove medium and coarse floating objects in the sewage to prevent subsequent processing equipment from clogging, and then through the lifting pump 22, Elevate the waste water from to...

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