CN105645660B - A kind of tobacco curing sewage disposal system - Google Patents

Abstract

The invention relates to a sewage treatment system for tobacco making, which comprises a grid water collection well, the grid water collection well is connected to a regulating tank through a pipeline, the regulating tank is connected to a primary sedimentation tank through a pipeline, and the primary sedimentation tank is connected to a primary sedimentation tank through a pipeline It is connected with the air flotation device, the air flotation device is connected with the hydrolysis acidification tank through the pipeline, the hydrolysis acidification tank is connected with the biological contact oxidation tank through the pipeline, the biological contact oxidation tank is connected with the secondary sedimentation tank through the pipeline, and the two The settling tank is connected with the intermediate pool through the pipeline, the intermediate pool is connected with the mechanical filter through the pipeline, the mechanical filter is connected with the activated carbon filter through the pipeline, and the activated carbon filter is connected with the reuse water pool through the pipeline. The invention has automatic operation, stable system operation and good sewage treatment effect.

Description

A smoke-making sewage treatment system

technical field

The invention relates to a sewage treatment system, in particular to a cigarette waste water treatment system.

Background technique

Tobacco production process drainage: ① Tobacco leaves→slitting machine→leaf moistening machine→leaf storage cabinet→feeding machine→leaf storage cabinet→humidifier→shredding machine→shine conditioning machine→moisturizing machine→shred drying machine→flavoring machine →Silk storage machine→Pneumatic wire feeder→Coiling bag→finished product, this process is drained at the leaf conditioning machine, feeding machine, silk conditioning machine, and moisture regaining machine; ②Tobacco stem→stem washing machine→stem conditioning machine→stem storage cabinet →stem cutting machine→stem rehydration→flash steamer→expansion tower→stem storage cabinet→flavoring machine→storage machine→wind wire feeder→coiling bag→finished product, this process is in the washing machine, moistening machine, puffing machine Drainage at towers and stem storage cabinets, the concentration of pollutants in the above-mentioned drainage is relatively heavy, the water volume is large, and the biodegradability is poor.

Contents of the invention

Purpose of the invention: The purpose of the invention is to overcome the deficiencies in the prior art and provide an automatic operation, stable system operation and good sewage treatment effect for tobacco-making sewage treatment system.

Technical solution: In order to solve the above technical problems, a smoke-making sewage treatment system according to the present invention includes a grid water collection well, and the grid water collection well is connected to a regulating pool through a pipeline, and the regulating pool is connected to the primary water tank through a pipeline. The sedimentation tank is connected, the primary sedimentation tank is connected with the air flotation device through the pipeline, the air flotation device is connected with the hydrolytic acidification tank through the pipeline, and the hydrolysis acidification tank is connected with the biological contact oxidation tank through the pipeline, and the biological contact oxidation tank Connected to the secondary settling tank through pipelines, the secondary settling tank is connected to the intermediate pool through pipelines, the intermediate pool is connected to the mechanical filter through the pipeline, the mechanical filter is connected to the activated carbon filter through the pipeline, and the activated carbon filter It is connected to the reuse water pool through pipelines, and the reuse water pool is connected to the frequency conversion water supply device through pipelines. A first lift pump is set at the bottom of the grid water collection well, and a second lift pump is set at the bottom of the adjustment pool. A third lift pump is provided on the pipeline between the intermediate pool and the mechanical filter, a front fan is provided on the regulating tank, a rear fan is provided on the biological contact oxidation tank, the primary sedimentation tank, The air flotation device and the secondary sedimentation tank are connected to the sludge thickening tank through pipelines, and the sludge thickening tank is connected to the belt filter press through pipelines. On the pipeline between the sludge thickening tank and the belt filter press A screw pump is provided, and an ion deodorization device is provided on the intermediate pool.

The primary sedimentation tank is an inclined tube sedimentation tank.

The air flotation device is an advection air flotation device.

A first dosing device is arranged on the primary sedimentation tank, and a second dosing device is arranged on the air flotation device.

The belt filter press and the sludge thickening tank are connected to the regulating tank through a return pipeline.

A dissolved air water pump is provided at the lower part of the air flotation device.

The backwashing pool is connected with the mechanical filter through the backwashing pipeline and the backwashing pump arranged on the backwashing pipeline.

A rotary grille decontamination machine is installed between the grille collection well and the adjustment tank to remove soft windings, larger solid particles and floating objects in the domestic sewage, thereby protecting the service life of the subsequent working water pumps And reduce system processing workload.

The adjustment pool mainly adjusts the water volume and balances the water volume, and reduces the impact on the follow-up treatment settings due to the unevenness of the water volume and water quality. The regulating pool adopts reinforced concrete structure and is buried in the ground.

The primary sedimentation tank can remove sinkable and floating matter in wastewater. After primary sedimentation, about 50% of sinkable matter, grease and floating matter and 20% of BOD can be removed.

After sedimentation, the waste water flows into the advection air flotation device and is supplemented by a dosing device to add PAC chemicals. Use the principle of flotation to remove pollutants such as oil, chroma, suspended solids and some organic matter in the sewage, purify the water quality and remove the pollutants in the sewage, and discharge the treated scum into the sludge thickening tank.

The water from the air flotation device flows into the sewage hydrolysis acidification tank by itself due to the water level drop. The hydrolysis in the sewage hydrolysis acidification tank relies on biological enzymes to catalyze and accelerate the hydrolysis reaction. The catalytic reaction efficiency of enzymes is 106-1013 times higher than that of corresponding non-enzymatic reactions. This is the special function of biological enzymes. The reaction is in the absence of oxygen. Carried out under conditions, hypoxia refers to anaerobic or microaerobic (DO<0.3-0.5mg/l). The anaerobic reaction is divided into four stages: the first stage hydrolysis; the second stage acidification; the third stage acid decay; the fourth stage methanation. The hydrolysis in the sewage hydrolysis acidification tank is to use the first two stages of the anaerobic process, that is, to control the reaction in the second stage and not enter the third stage. After the sewage is hydrolyzed, the ratio of BOD5/CODcr increases significantly. Due to the large biomass and high volume load, the hydrolysis process can adapt to the change of influent CODcr load. The hydrolysis process runs stably and is less affected by the change of external temperature. The hydrolysis tank does not produce odor like anaerobic reaction. The hydrolysis tank can be designed into open.

The effluent from the hydrolytic acidification tank flows into the biological contact oxidation tank by itself. The biological contact oxidation process is to cultivate biological bacteria clusters on the filler in the biological pool, and use biological bacteria to biologically clean various pollutants in the sewage, which can reduce the absolute values of CODCR and BOD5 pollutants in the sewage.

After the sewage is treated by biological contact oxidation, it flows into the secondary sedimentation tank by itself. The sediment produced due to the metabolism of biological bacteria after the biochemical reaction is removed through the secondary sedimentation tank.

A liquid level controller is set in the middle tank to start and stop the sewage lift pump according to the set liquid level. The water in the intermediate tank is pressurized by the sewage lift pump into the mechanical filter and activated carbon filter.

All the sludge generated by the sewage treatment system is concentrated in the sludge thickening tank. A liquid level controller is also set in the sludge thickening tank to control the start and stop of the sludge pump, and the sludge is lifted to the belt sludge dewatering system through the sludge pump. After being dehydrated by the belt sludge dewatering machine, the dried sludge is transported outside for disposal.

Beneficial effects: Compared with the prior art, the present invention has the remarkable advantages that: the present invention is automatically operated, the overall operation is stable and reliable, and the hydrolytic acidification tank is adopted. After the sewage is hydrolyzed, the ratio of BOD5/CODcr is significantly increased, and the hydrolysis process The operation is stable, and it is less affected by the change of external temperature. The hydrolysis tank does not produce odor like anaerobic reaction. The hydrolysis tank can be designed as an open type. After being treated by this system, the sewage purification effect is good, and it meets the drainage standard.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Fig. 1, a kind of smoke-making sewage treatment system according to the present invention, it comprises grid water collection well 1, and described grid water collection well 1 is connected with adjusting pool 2 through pipeline, and described adjusting pool 2 is connected with through pipeline The primary sedimentation tank 3 is connected, the primary sedimentation tank 3 is connected with the air flotation device 4 through the pipeline, the air flotation device 4 is connected with the hydrolytic acidification tank 5 through the pipeline, and the hydrolytic acidification tank 5 is connected with the biological contact oxidation tank 6 through the pipeline The biological contact oxidation tank 6 is connected to the secondary sedimentation tank 7 through pipelines, the secondary sedimentation tank 7 is connected to the intermediate pool 8 through pipelines, the intermediate pool 8 is connected to the mechanical filter 9 through pipelines, and the mechanical filter The device 9 is connected to the activated carbon filter 10 through the pipeline, and the activated carbon filter 10 is connected to the reuse water pool 11 through the pipeline, and the reuse water pool 11 is connected to the frequency conversion water supply device 12 through the pipeline, and at the bottom of the grid water collection well 1 A first lift pump 13 is provided, a second lift pump 14 is provided at the bottom of the regulating pool 2, a third lift pump 15 is provided on the pipeline between the intermediate pool 8 and the mechanical filter 9, and a third lift pump 15 is provided on the pipeline between the intermediate pool 8 and the mechanical filter 9. The conditioning tank 2 is provided with a front fan 16, and the biological contact oxidation tank 6 is provided with a rear fan 17. The primary sedimentation tank 3, the air flotation device 4 and the secondary sedimentation tank 7 are connected to the sludge concentration tank through pipelines. 18, the sludge thickening tank 18 is connected to the belt filter press 19 through a pipeline, and a screw pump 20 is arranged on the pipeline between the sludge thickening tank 18 and the belt filter press 19. The intermediate pool 8 is provided with an ion deodorizing device 21; the primary sedimentation tank 3 is an inclined tube sedimentation tank; the air flotation device 4 is an advection air flotation device; the primary sedimentation tank 3 is provided with a first adding The medicine device 22 is provided with the second dosing device 23 on the air flotation device 4; the belt filter press 19 and the sludge thickening tank 18 are connected to the regulating tank 2 through the return pipeline; 4 The lower part is provided with a dissolved air pump 24; the reuse water pool 11 is connected to the mechanical filter 9 through a backwash pipeline and a backwash pump 25 arranged on the backwash pipeline. The invention operates automatically, and the overall operation is stable and reliable. The hydrolytic acidification tank is adopted. After the sewage is hydrolyzed, the ratio of BOD5/CODcr is significantly increased. To respond to such odors, the hydrolysis tank can be designed as an open type. After being treated by this system, the sewage purification effect is good and meets the drainage standard.

The present invention provides a kind of train of thought and method, and there are many methods and approaches for realizing the technical solution, and the above description is only a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without Under the premise of the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention, and each component that is not specified in this embodiment can be realized by existing technologies.

Claims (7)

1. A tobacco-making sewage treatment system is characterized in that: it comprises a grid water collection well (1), and the grid water collection well (1) is connected to a regulating tank (2) through a pipeline, and the regulating tank (2) Link to each other with primary sedimentation tank (3) through pipeline, described primary sedimentation tank (3) links to each other with air flotation device (4) through pipeline, and described air flotation device (4) links to each other with hydrolytic acidification tank (5) through pipeline, so The hydrolytic acidification tank (5) is connected to each other with the biological contact oxidation tank (6) through a pipeline, and the biological contact oxidation tank (6) is connected to the secondary sedimentation tank (7) through a pipeline, and the secondary sedimentation tank (7) is connected to the secondary sedimentation tank (7) through a pipeline. Intermediate pool (8) links to each other, and described intermediate pool (8) links to each other with mechanical filter (9) by pipeline, and described mechanical filter (9) links to each other with activated carbon filter (10) by pipeline, and described activated carbon filter ( 10) It is connected to the reuse water pool (11) through a pipeline, and the reuse water pool (11) is connected to the frequency conversion water supply device (12) through a pipeline, and a first lift pump ( 13), a second lift pump (14) is provided at the bottom of the adjustment pool (2), and a third lift pump (15) is provided on the pipeline between the intermediate pool (8) and the mechanical filter (9). ), the front fan (16) is provided on the regulating tank (2), the rear fan (17) is provided on the biological contact oxidation tank (6), the primary sedimentation tank (3), gas The floating device (4) and the secondary settling tank (7) are connected to each other with the sludge thickening tank (18) through pipelines, and the said sludge thickening tank (18) is connected to each other with the belt filter press (19) through pipelines. A screw pump (20) is provided on the pipeline between the mud thickening tank (18) and the belt filter press (19), and an ion deodorization device (21) is provided on the intermediate pool (8). 2. The tobacco-making sewage treatment system according to claim 1, characterized in that: the primary settling tank (3) is an inclined tube settling tank. 3. The tobacco-making sewage treatment system according to claim 1, characterized in that: the air flotation device (4) is an advection air flotation device. 4. The tobacco-making sewage treatment system according to claim 1, characterized in that: a first dosing device (22) is provided on the primary sedimentation tank (3), and a first dosing device (22) is provided on the air flotation device (4) A second dosing device (23) is provided. 5. The tobacco manufacturing sewage treatment system according to claim 1, characterized in that: the belt filter press (19) and the sludge thickening tank (18) are connected to the regulating tank (2) through a return pipe. 6. The tobacco manufacturing sewage treatment system according to claim 1, characterized in that: a dissolved air pump (24) is provided at the lower part of the air flotation device (4). 7. The tobacco-making sewage treatment system according to claim 1, characterized in that: the reuse pool (11) passes through the backwash pipeline and the backwash pump (25) and the mechanical filter ( 9) Connected.