Printing and dyeing sewage processing method

A treatment method, printing and dyeing sewage technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of incomplete coagulant reaction, waste of coagulant, slow reaction, etc., and achieve good sewage treatment effect and low chemical consumption Small, less residue effect

Inactive Publication Date: 2007-07-11
吕建荣
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  • Abstract
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  • Claims
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Problems solved by technology

In coagulation treatment, the coagulant used for different types of sewage is the key to treatment, so many researchers are actively researching and developing new composite coagulants or flocculants, while the existing printing and dyeing sewage treatment Various coagulants mainly use iron salt or aluminum salt, and do not make a good distinction for printing and dyeing sewage; at the same time, the compounding process is also an important unit in sewage treatment, and there is a compounding time in the comp

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  • Printing and dyeing sewage processing method

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Example Embodiment

[0013] Embodiments of the present invention, because different types of coagulants such as polyaluminum chloride, aluminum sulfate, polyaluminum sulfate, polyferric sulfate, ferrous sulfate or ferric chloride can react in a short time when mixed to form Inorganic polymer form, so the coagulant and composite element (or composite substance) used in the present invention can be the same kind of substance, but in specific use, the same substance cannot be used as the mixture in the dosing pipeline 2 and the additional pipeline 3. Coagulants and compounding elements.

[0014] As shown in Figure 1, a dosing pipeline 2 is set on the sewage pipeline 1 of the flowing printing and dyeing sewage, and an additional pipeline 3 is connected to the side of the dosing pipeline 2, and coagulant is added through the dosing pipeline 2, and the added mixture The coagulant is polyaluminum chloride and can also be aluminum sulfate, polyaluminum sulfate, polyferric sulfate, ferrous sulfate or ferri...

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Abstract

The invention discloses a disposing method of printing and dyeing effluent, which is characterized by the following: adding coagulant in the effluent pipe or outlet through drug spraying pipe; connecting at least one auxiliary pipe on the drug spraying pipe; adding compound element in the coagulant to improve the efficiency of coagulant; blending compound element and coagulant into effluent in the effluent pipe; adopting coagulant from polyaluminium chloride, aluminum sulfate, polyaluminum sulfate, polyferric sulfate, ferrous sulfate or iron trichloride; setting the compound element from calcium chloride, polyaluminium chloride, aluminium sulfate, polyaluminium sulfate, polyferric sulfate, ferrous sulfate, iron trichloride, magnesium chloride, magnesium sulfate, zinc sulfate, active silicon acid, cationic polyacrylamide, diallyl dimethyl ammonium chloride or acrylamide copolymer.

Description

technical field [0001] The invention relates to a treatment method for printing and dyeing sewage, which belongs to the technical field of sewage treatment. Background technique [0002] In printing and dyeing sewage treatment and water purification, coagulation is one of the very important units. It uses coagulants to change the state of particles in water, so that suspended components and colloidal components in water are separated, and under certain conditions, they can be formed. Sedimentation or air flotation separates flocs, and then separates this part of flocs by sedimentation or air flotation. In coagulation treatment, the coagulant used for different types of sewage is the key to treatment, so many researchers are actively researching and developing new composite coagulants or flocculants, while the existing printing and dyeing sewage treatment Various coagulants mainly use iron salt or aluminum salt, and do not make a good distinction for printing and dyeing sewa...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 吕建荣
Owner 吕建荣
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