Leather sewage treatment agent

A technology for leather sewage and treatment agent, which is applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. The problems of complex components and insignificant flocculation effect can achieve the effect of improving surface charge and interface activity, reducing compressibility and reducing quantity

CN106966475AActive Publication Date: 2017-07-21韩培利
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-07-21

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Abstract

The invention discloses lather sewage treatment agent which comprises the following raw materials in parts by weight: 15-20 parts of coal ash, 10-15 parts of attapulgite hybrids, 20-25 parts of 4A zeolite, 20-25 parts of lime and 10-15 parts of clay. The flocculant disclosed by the invention is a special treatment agent for leather sewage, according to different properties of different treatment agents, various impurities in sewage can be settled in multiple directions and multiple angles, due to addition of the 4A zeolite, a very good framework function can be achieved in the treatment agent, sludge floc aggregate can be kept porous when being dehydrated, collapse of the floc aggregate is prevented, the compressibility of the impurities in sewage can be degraded, and due to cooperation of different components, surface charges and interface activity of sludge granules can be effectively improved, and the filtering speed of the sludge can be greatly increased.
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Description

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a leather sewage treatment agent. Background technique

[0002] Tannery sewage is composed of strongly acidic liming and dehairing wastewater and weakly acidic tanning wastewater, which contains high concentrations of tanning materials, chlorides, sulfides, surfactants, chemical additives, oils, proteins and Suspended solids in water quality, etc. The waste water has a turbid appearance and an unpleasant smell, and must be treated before it can be discharged.

[0003] In the prior art, leather sewage needs to be chemically adjusted by adding chemical reagents to achieve high dehydration efficiency. The general chemical reagents are organic polymer flocculants and inorganic flocculants. The commonly used organic polymer flocculants are polyacrylamide, inorganic flocculation The agent is ferric chloride, aluminum chloride, polyaluminum silicate, polyaluminum ferric chlori...

Examples

Embodiment 1

[0033] A leather sewage treatment agent is composed of the following raw materials: 15kg of fly ash, 10kg of attapulgite, 20kg of 4A zeolite, 20kg of lime and 10kg of clay.

Embodiment 2

[0035] A leather sewage treatment agent is composed of the following raw materials: 20kg of fly ash, 15kg of attapulgite, 25kg of 4A zeolite, 25kg of lime and 15kg of clay.

Embodiment 3

[0037] A leather sewage treatment agent is composed of the following raw materials: 18kg of fly ash, 12kg of attapulgite, 22kg of 4A zeolite, 24kg of lime and 12kg of clay.