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Treating agent of coking wastewater

A technology for coking wastewater and treatment agent, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of high cost of raw materials, low removal rate of total cyanide of organic pollutants, etc., to reduce the cost of raw materials, save the cost of chemical agents, save water cost reduction effect

Inactive Publication Date: 2012-11-21
HEILONGJIANG JIANLONG IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low total cyanide removal rate of organic pollutants and high cost of raw materials in the treatment of wastewater by using the existing coking wastewater treatment agent, and then provide a coking wastewater treatment agent

Method used

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specific Embodiment approach 1

[0011] Specific embodiment one: a kind of coking wastewater treatment agent of this embodiment is made up of polyferric sulfate, aluminum sulfate, ferric chloride and water treatment auxiliary agent, and above-mentioned component polyferric sulfate, aluminum sulfate, ferric chloride, water The ratio of processing aids is (28-32): (62-68): (4-6): (0.4-0.6) in parts by weight.

[0012] When the treatment agent of this embodiment is used, add water to prepare the liquid treatment agent that requires tons, and then add it;

specific Embodiment approach 2

[0013] Specific embodiment 2: The components in this embodiment are polyferric sulfate, aluminum sulfate, ferric chloride, and water treatment additives in a ratio of 30:65:5:0.5 by weight.

specific Embodiment approach 3

[0014] Embodiment 3: The water treatment auxiliary agent described in this embodiment is guar gum. The guar gum used in this embodiment is a galactan combined with glycosides, that is, a polymer hydrocolloid polysaccharide composed of galactan and mannose (1:2), with a molecular weight of about 200,000-300,000. Erjiao is a white to light yellow-brown free-flowing powder, which can be completely dissolved in cold or hot water. Its aqueous solution is tasteless, odorless, non-toxic and neutral. Because the solution contains a small amount of fiber and cellulose, it is light gray and translucent. Guar gum aqueous solution has high viscosity, and its viscosity is related to particle size, pH value and temperature. It is the highest viscosity gum among natural gums, and its thickening performance is 4-7 times higher than that of starch. Guar gum solution is at pH It is stable in the range of 4.0-10.5, and the hydration is very fast when the pH is 8.0. In wastewater treatment, guar...

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Abstract

A treating agent of coking wastewater relates to a chemical agent of water processing, and aims to solve problems of relatively low total cyanogen removal rate of organic pollutants and relatively high cost of raw materials by using existing treating agents of coking wastewater to treat the wastewater. The agent is composed of polymeric ferric sulfate, aluminum sulfate, ferric chloride, and a water treating additive, and the polymeric ferric sulfate, the aluminum sulfate, the ferric chloride, and the water treating additive is in a weight part ratio of (28-32) : (62-68): (4-6): (0.4-0.6). The agent is used for purifying treatment of the coking wastewater.

Description

technical field [0001] The invention relates to a chemical agent for water treatment, in particular to a treatment agent for purifying coking wastewater. Background technique [0002] Coking wastewater mainly comes from coking plants and gas plants. The composition of pollutants is complex, including volatile phenols, many aromatic organic compounds that are difficult to biodegrade, polycyclic compounds, and heterocyclic compounds such as oxygen, sulfur and nitrogen. There are high concentrations of ammonia, phenols, and sulfur in coking water. The main wastewater is phenol cyanide wastewater. Coking water is a kind of difficult-to-treat industrial wastewater with high COD value and high phenol value. Crops decrease or die, and people will cause chronic poisoning after drinking, which is very harmful. At present, the treatment of coking wastewater adopts a single chemical agent such as adding polyferric sulfate or aluminum sulfate or ferric chloride to remove organic polluta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 王敏刘建勋吴利波
Owner HEILONGJIANG JIANLONG IRON & STEEL
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