Method for tobacco wastewater recycling by coupled ceramic membrane adsorption electrocatalytic process
A treatment method, electrocatalytic oxidation technology, applied in water/sewage treatment, anaerobic digestion treatment, chemical instruments and methods, etc., can solve the problems of high accuracy of material dosing ratio and affect system treatment efficiency, etc., to achieve Strong reproducibility, lower chroma, lower COD effect
Inactive Publication Date: 2018-06-26
SHANGHAI WINNER ENVIRONMENTAL TECH
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Problems solved by technology
Electrocatalytic oxidation technology has the characteristics of long service life of catalytic electrodes, less equipment, less control points, simple process and simple operation. However, in actual operation, the accuracy of material dosing ratio is high, which affects the processing efficiency of the system.
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[0026] Example: The source of sewage is wastewater from a tobacco factory in a certain city. The water quality conditions are: COD is 10000-12000 mg / L, BOD5 is 3250 mg / L, SS is 400 mg / L, chromaticity is 330, temperature is 50°C, and water volume is 2500m3 / d
[0027] (1) Introduce the tobacco wastewater into the grid well for primary filtration, mainly to remove filaments, debris and other sundries;
[0028] (2) The wastewater filtered by the grid well is introduced into the regulating tank, and the wastewater is mixed evenly;
[0029] (3) Wastewater enters the air flotation tank from the regulating tank, and at the same time, flocculant is added to the air flotation tank and aerated, the suspended solids and colloids in the wastewater produce flocculation, and the fine suspended solids float on the liquid surface to form scum. The slag machine removes the scum and puts it into the sludge thickening tank, and removes it in the form of sludge;
[0030] (4) The effluent from t...
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Abstract
The invention relates to a method for tobacco wastewater recycling by a coupled ceramic membrane adsorption electrocatalytic process. The main method is a high-efficiency air flotation + hydrolysis acidification + ceramic membrane + electrocatalytic oxidation process, and a grid, a regulating tank and a high-efficiency gas floating system, an acidification system, a ceramic membrane system and anelectrocatalytic oxidation device are sequentially included. A high-efficiency gas floating tank adjusts flocculant dosage according to the water inlet amount through a PLC online control system; an anaerobic acidification system performs biochemical treatment by microorganisms; the ceramic membrane system effluent enters the electrocatalytic oxidation device for advanced treatment, and the electrocatalytic oxidation device effluent can be used as urban sewage recycling industrial water. The method has the advantages that the ceramic membrane system and the electrocatalytic oxidation system are utilized for tobacco wastewater recycling, the operation is simple and convenient, the operation energy consumption is low, the automation degree is high, and the effluent water quality is excellent.
Description
technical field [0001] The invention relates to a method for resourceful treatment of tobacco waste water by a coupled ceramic membrane adsorption electrocatalysis process. Background technique [0002] my country is a big country in tobacco planting, production and consumption. The planting area and output rank first in the world. The production process of tobacco products will generate a large amount of wastewater. The wastewater is dark in color, complex in composition, and contains a large amount of micro suspended solids. Nicotine, organic acids, aminobiphenyls, naphthylamines and other components in tobacco leaves cause high toxicity and serious pollution of wastewater. Cigarette production wastewater has the characteristics of high concentration of pollutants, complex components, large changes in water quality, and high chroma. Wastewater contains alkaloids, phenols, alcohols, etc. in tobacco leaves, as well as spices and essences, and traces of mechanical oil. It is...
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IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F1/24C02F1/44C02F1/4672C02F1/52C02F3/28C02F2303/02
Inventor 虞素飞张建鹏李云峰孙严
Owner SHANGHAI WINNER ENVIRONMENTAL TECH