Method for treating leather sewage

A treatment method, technology of leather sewage, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve incomplete coagulant reaction, leather sewage distinction, metal elements Residue and other problems, to achieve good sewage treatment effect, small amount of chemicals used, and less residual substances

Inactive Publication Date: 2015-05-27
谈丽娜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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Embodiment Construction

[0012] Embodiments of the present invention, because of different kinds of coagulants such as polyferric sulfate, polyaluminum chloride diallyl dimethyl ammonium chloride, diallyl dimethyl ammonium chloride or acrylic acid amine copolymer; mixing It can react in a short time to form an inorganic macromolecular form, so the coagulant used in the present invention and the composite element (or composite substance) can be similar substances, but in specific use, it cannot be used between the dosing pipeline 2 and the composite material. Additional pipe 3 uses the same substance as coagulant and compounding element at the same time.

[0013] Set a dosing pipeline on the sewage pipeline of flowing leather sewage, connect an additional pipeline on the side of the dosing pipeline, add coagulant through the dosing pipeline, the coagulant added is polyferric sulfate or polychlorine Aluminum Diallyl Dimethyl Ammonium Chloride, Diallyl Dimethyl Ammonium Chloride, or Acrylamine Copolymer....

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PUM

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Abstract

The invention discloses a method for treating leather sewage. The method using coagulant for treatment of leather sewage has the advantages of good sewage treatment effect, sufficient reaction of the coagulant, few residual in the water and small dosage of the agent. A technical scheme is as below: adding coagulant in the sewage pipe or at the outlet by a spraying pipe. At least one additional pipe is connected to the spraying pipe, composite elements (or composite materials) used to improve the efficiency of the coagulant is added to the coagulant through the additional pipe, and the composite elements and the coagulant are mixed and sent into the sewage pipe or the sewage at the outlet. The coagulant is polymeric ferric sulfate, polymeric aluminium chloride diallyldimethylammonium chloride, diallyldimethylammonium chloride or acrylic amide copolymer; and the composite element is calcium chloride, magnesium chloride, magnesium sulfate, zinc sulfate, zinc chloride, phosphoric acid, sulfuric acid, hydrochloric acid, activated silicic acid, diallyldimethylammonium chloride, diallyldimethylammonium chloride or acrylamide copolymer.

Description

technical field [0001] The invention relates to a treatment method for leather sewage, which belongs to the technical field of sewage treatment. Background technique [0002] In leather 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 the coagulation treatment, the coagulant used for different types of sewage is the key to the treatment, so many researchers are actively researching and developing new composite coagulants or flocculants, while the existing treatment of leather sewage The various coagulants mainly use iron salt or aluminum salt, and do not make a good distinction for leather sewage; at the same time, the compoun...

Claims

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Application Information

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IPC IPC(8): C02F1/52
CPCC02F1/52C02F1/5245C02F1/56C02F2103/24C02F2305/00
Inventor 谈丽娜
Owner 谈丽娜
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