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A treatment, regeneration and cyclic utilization method for tobacco sheet production wastewater

A technology for the production of waste water and tobacco flakes, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. and other problems to achieve high activity and prevent scaling

Inactive Publication Date: 2013-10-23
BOYING XIAMEN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to aim at the long process flow, large equipment investment, large floor area, high operating cost, and biochemical treatment system and membrane treatment system that cannot operate normally due to fouling in the existing tobacco production wastewater treatment method. After treatment, the discharged wastewater does not meet the standard, cannot be regenerated and recycled, and provides a combination of chemical decalcification technology, biochemical technology, electrochemical technology, BAF technology and membrane technology, which has low cost and high efficiency. Treatment method of recycled tobacco production wastewater

Method used

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  • A treatment, regeneration and cyclic utilization method for tobacco sheet production wastewater
  • A treatment, regeneration and cyclic utilization method for tobacco sheet production wastewater
  • A treatment, regeneration and cyclic utilization method for tobacco sheet production wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 20 tons / day tobacco flake production wastewater treatment and recycling method.

[0057] Table 2 shows the water quality indicators of the tobacco sheet production wastewater after determination.

[0058] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 25000 5 Chroma times 25000 2 BOD 5 mg / L 6000 6 Ca 2+ mg / L 500 3 SS mg / L 15000 7 water temperature ℃ 50 4 pH value —— 5.5

[0059] (1) Slag removal

[0060] 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 tobacco flake production to the rotary mechanical fine grid machine 2, and furt...

Embodiment 2

[0087] A method for the treatment and recycling of 50 tons / day tobacco flake production wastewater.

[0088] The water quality indicators of the tobacco sheet production wastewater were determined and shown in Table 5.

[0089] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 9000 5 Chroma times 12000 2 BOD 5 mg / L 3000 6 Ca 2+ mg / L 300 3 SS mg / L 5000 7 water temperature ℃ 65 4 pH value —— 6.2

[0090] (1) Slag removal

[0091] 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 tobacco flake production to the rotary mechanical fine grid machi...

Embodiment 3

[0118] 10 tons / day tobacco flake production wastewater treatment and recycling method.

[0119] The water quality indicators of the tobacco sheet production wastewater were determined as shown in Table 8.

[0120] serial number project unit measured value serial number project unit measured value 1 COD C mg / L 4000 5 Chroma times 1300 2 BOD 5r mg / L 1800 6 Ca 2+ mg / L 400 3 SS mg / L 1200 7 water temperature ℃ 50 4 pH value —— 6.5

[0121] (1) Slag removal

[0122] 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 tobacco flake production to the rotary mechanical fine grid machine 2, and furth...

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Abstract

The invention relates to a treatment, regeneration and cyclic utilization method for tobacco sheet production wastewater. The method comprises steps of slag removal, chemical decalcification, air floatation, anaerobic treatment, electrolysis, A / O treatment, secondary electrolysis, membrane treatment / aeration biological filter biochemical treatment, third electrolysis, desalination in sequence to obtain reclaimed water. The method combines a chemical decalcification technology, a biochemical technology, an electrochemical technology, a BAF technology and a membrane technology. The method has low cost and high efficiency. 75%-85% of the tobacco sheet production wastewater can be regenerated, cycled and utilized after being treated, thereby reducing wastewater discharge, protecting the environment from being polluted by the wastewater, reducing water resource waste, and allowing the cost of the recycled water to be lower than the cost of tap water. The method is economic and reasonable, and can produce good economic benefit.

Description

technical field [0001] The present invention relates to a method for the treatment and recycling of tobacco sheet production wastewater, in particular to a tobacco sheet production wastewater and tobacco production wastewater based on chemical decalcification technology, biochemical technology, electrochemical technology, BAF technology and membrane technology The processing and regeneration recycling method belongs to the field of water pollution control of environmental engineering. 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 cigarette production, 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,...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCY02A20/131
Inventor 张世文王峰李丹王福利庞志强侯勋
Owner BOYING XIAMEN SCI & TECH
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