A high-efficiency treatment method for fluorescent pigment emulsion wastewater
A technology of fluorescent pigments and treatment methods, applied in water/sewage treatment, multi-stage water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of poor treatment effect and high cost of wastewater treatment, and reduce the generation of pollutants , reduce the production of reactive flocs, and save water resources
Active Publication Date: 2020-08-25
HUANGSHAN JIAJIA FLUORESCENT MATERIAL
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Problems solved by technology
For high-concentration printing and dyeing wastewater, several methods are required to be used together. The treatment process of each stage is strict, and the wastewater treatment cost is high and the treatment effect is not good.
Method used
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Embodiment 1
[0020] React one ton of waste water with the chemicals in the following table:
[0021]
[0022] (1) Wastewater collection tank, aerated and stirred; the continuously aerated wastewater is pumped to the reaction tank by the wastewater lifting pump;
[0023] (2) Demulsification pretreatment: According to the pH of the wastewater, the online pH meter in the reaction pool adjusts the pH of the wastewater by using a pH regulator to adjust the pH of the wastewater to 3-4. Add ferrous sulfate solution and aerate and stir for 1 hour , adjust the pH to 7.5-8.5, and then add PAM for solid-liquid separation to accelerate the settling of flocs after demulsification. Mud thickening tank; the upper liquid is pumped to the flocculation tank according to the adjustable pump, and the sediment floc at the bottom is pumped to the sludge thickening tank;
[0024] (3) Coagulation tank: Take 0.09 kg of polyaluminium chloride and 0.06 kg of fluorescent wastewater decolorizer for each ton of sew...
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The invention provides an efficient treatment method for fluorescent pigment emulsion wastewater. The efficient treatment method comprises the following steps: (1) performing aeration stirring in a wastewater collection tank; (2) performing demulsification pretreatment; (3) treating in a coagulating basin; (4) performing coagulating and decoloring, namely feeding wastewater after decoloring and primary flocculation inside the coagulating basin into a flocculation basin through an overflowing port, respectively adding a fluorescent wastewater decoloring agent, aluminum polychlorid and anionic polyacrylamide, continuously aerating to enable wastewater of primary flocculation to sufficiently contact and react with a solution of the anionic polyacrylamide and furthermore form aggregated flocculate; (5) performing flocculation and sedimentation; and (6) separating and discharging. The method provided by the invention is simple and easy to operate, meanwhile reaction flocculate can be reduced, environment protection requirements can be met, and pollutants can be reduced from sources; and in addition, the sewage after the decoloring treatment with the method provided by the invention can be used as workshop floor washing water, then circulation use is achieved, and the water resource is saved.
Description
technical field [0001] The invention relates to the technical field of fluorescent pigment emulsion wastewater treatment, in particular to an efficient treatment method for fluorescent pigment emulsion wastewater. Background technique [0002] Fluorescent pigment emulsion wastewater is one of the most difficult industrial wastewater. It has large discharge volume, high content of organic pollutants, complex composition, deep color, and difficult biodegradation. The usual treatment methods are difficult to meet the requirements of environmental protection and reuse. [0003] Fluorescent pigment emulsion wastewater has the characteristics of viscous emulsion wastewater, high biochemical oxygen demand, high chroma, high solid content, and pH value due to the materials, oils, fluorescent dyes, fluorescent whitening agents, and chemical additives used in the processing process. High, difficult to biodegrade, changeable characteristics. [0004] At present, the treatment of fluor...
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IPC IPC(8): C02F9/04
CPCC02F1/5236C02F1/56C02F1/66C02F1/725C02F1/76C02F9/00C02F2001/007C02F2101/308
Inventor 王济民许呈祥汪跃东汪海明余发美蒋德峰
Owner HUANGSHAN JIAJIA FLUORESCENT MATERIAL