Papermaking-process tobacco sheet production wastewater pretreatment equipment

A technology for tobacco flakes and waste water production, which is applied in biological water/sewage treatment, water/sewage treatment, water treatment parameter control, etc. It can solve the problems of underutilization of flocculation agents, large dosage of agents, and influence of biochemical treatment, etc. , to achieve the effect of good pretreatment effect, less chemical input and high treatment efficiency

Pending Publication Date: 2020-06-16
HUBEI CHINA TOBACCO IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the pretreatment methods for paper-making tobacco flake wastewater are mainly chemical flocculation and air flotation treatment. Due to the high content of SS in paper-making tobacco flake wastewater, the dosage of chemicals is huge, the treatment time is long, and the treatment cost is high.
At the same time, a large number of flocculation agents have not been fully utilized, and enter the biochemical reaction tank after pretreatment, which has a great impact on biochemical treatment

Method used

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  • Papermaking-process tobacco sheet production wastewater pretreatment equipment
  • Papermaking-process tobacco sheet production wastewater pretreatment equipment
  • Papermaking-process tobacco sheet production wastewater pretreatment equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: as Figures 1 to 3 As shown, it is only one of the embodiments of the present invention, a papermaking method tobacco sheet production wastewater pretreatment equipment, including a water collection well 1, a flocculation sedimentation tank 2, an air flotation tank 3 and a microsand flocculation sedimentation tank 4, the collection The water well 1 includes a cover body 11 arranged on the upper side of the water collecting well 1, a feeding port 12 arranged on the side wall of the water collecting well 1, a material outlet 13 arranged on the lower side of the water collecting well 1, and a material outlet 13 arranged on the lower side of the water collecting well 1. The filter grid 14 in the water collecting well 1, the discharge port 13 of the water collecting well 1 and the flocculation sedimentation tank 2 are connected by a dosing pipe 5, and the flocculation sedimentation tank 2 is communicated with the air flotation tank 3, The air flotation tank 3 is p...

Embodiment 2

[0031] Embodiment two, still as Figures 1 to 3 As shown, it is only one of the embodiments of the present invention, in order to make the treatment effect of a kind of papermaking method tobacco sheet production wastewater pretreatment equipment of the present invention better, and the degree of stability is higher, the present invention also has the following designs:

[0032] The first is the filter grid 14 of the water collecting well 1 . The filtering grid 14 includes a rotating ring 141 connected to the inner side wall of the water collecting well 1 and a fence disc 142 connected to the rotating ring 141 . The diameter of the fence disc 142 is larger than The inner diameter of the rotating ring 141 is smaller than the outer diameter of the rotating ring 141 , the rotating ring 141 is provided with a clamping hole 143 , and the lower part of the fence plate 142 is provided with a clamping hole 143 extending in the direction. Post 144 protrudes. Moreover, the inner side w...

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Abstract

The invention provides papermaking-process tobacco sheet production wastewater pretreatment equipment. The invention relates to the technical field of papermaking equipment. The equipment comprises awater collecting well, a flocculation and sedimentation tank, an air floatation tank and a micro-sand flocculation and sedimentation tank. The water collecting well comprises a cover body, a feeding hole, a discharging hole and a filtering grid. The discharging hole of the water collecting well is connected with the flocculation and sedimentation tank through a dosing pipe. The flocculation and sedimentation tank is communicated with the air floatation tank. The air floatation tank is provided with a water outlet pipe and a sludge outlet pipe, and a conveying pump is arranged in the sludge outlet pipe. A water discharging pipe of the micro-sand flocculation and sedimentation tank is connected with a circulating pipe and a control valve, and a water quality sensing piece electrically connected with the control valve is arranged in the water discharging pipe. The papermaking-process tobacco sheet production wastewater pretreatment equipment is simple in structure, good in pretreatment effect, low in SS content of the treated wastewater, low in chemical input, capable of recycling chemicals, short in treatment time, efficient in treatment and small in influence on a biochemical pool.

Description

technical field [0001] The invention relates to the technical field of papermaking equipment, [0002] In particular, the present invention relates to a pretreatment equipment for the production of waste water from paper-making tobacco sheet production. Background technique [0003] Paper-making tobacco sheets will produce a large amount of waste water during the papermaking process, and the composition of the waste water is relatively complex, including lignin, cellulose, hemicellulose, pectin, polysaccharides, insoluble proteins and many organic substances that are difficult to be degraded by microorganisms. The content of suspended solids is high and the COD load is large. If it directly enters the biochemical pool, it will bring huge impact, so pretreatment is required. [0004] At present, the pretreatment methods of papermaking tobacco sheet wastewater are mainly chemical flocculation and air flotation treatment. Because the SS content of papermaking tobacco sheet was...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/24C02F1/5236C02F3/00C02F9/00C02F2209/10
Inventor 黄文戴泽军郑军李鹏飞董国胜金倍
Owner HUBEI CHINA TOBACCO IND
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