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A kind of preparation method of coking sewage treatment agent

A coking sewage and treatment agent technology, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of low removal rate of suspended solids in chemical oxygen consumption, difficulty in meeting discharge standards, The problem of large amount of treatment agent is used to achieve low cost, small use temperature limit and good effect

Inactive Publication Date: 2017-03-22
张启磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, for urban sewage, especially for coking plant sewage treatment methods in coal cities, ferrous chloride or aluminum sulfate liquid is generally used for treatment, and the treatment effect is poor. Some main indicators, such as chemical oxygen demand (COD), suspended solids ( SS) has a low removal rate, and it is difficult to meet the specified emission standards. In addition, the amount of these treatment agents is generally large, and it is easy to produce more difficult-to-handle residues, which can easily cause secondary pollution

Method used

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  • A kind of preparation method of coking sewage treatment agent

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Embodiment 1

[0021] refer to figure 1 , a preparation method of a coking sewage treatment agent, comprising the steps of:

[0022] S1. Weigh 30 parts of water by weight, add 4 parts of concentrated sulfuric acid and 1 part of sodium silicate to mix evenly during the stirring process, continue to add 40 parts of calcium oxide, 10 parts of sodium ferrate, 8 parts of polyaluminum chloride, 10 parts of Stir the polyferric sulfate for 60 minutes, raise the temperature to 60°C and continue stirring for 3 hours, and cool to obtain the prefabricated material;

[0023] S2. Put the prefabricated material obtained in S1 into the reactor, raise the temperature of the reactor to 40°C and stir for 40 minutes, then add 1.5 parts of anionic polyacrylamide, 0.2 parts of aluminum salt, and 0.1 part of iron salt to react for 15 minutes, and continue to rise High temperature to 55°C until the reaction is complete;

[0024] S3. Add 2 parts of xanthan gum, 1 part of alginate, 0.7 part of gelatin, 1 part of mo...

Embodiment 2

[0027] A preparation method of a coking sewage treatment agent, comprising the steps of:

[0028] S1. Weigh 50 parts of water by weight, add 2 parts of concentrated sulfuric acid and 4 parts of sodium silicate to mix evenly during the stirring process, continue to add 20 parts of calcium oxide, 15 parts of sodium ferrate, 2 parts of polyaluminum chloride, 13 parts of Stir the polyferric sulfate for 50 minutes, raise the temperature to 65°C and continue stirring for 1 hour, and cool to obtain the prefabricated material;

[0029] S2. Put the prefabricated material obtained in S1 into the reactor, raise the temperature of the reactor to 50°C and stir for 20 minutes, then add 1.9 parts of anionic polyacrylamide, 0.1 parts of aluminum salt, 0.2 parts of iron salt and stir for 10 minutes, continue to rise High temperature to 60°C to fully react completely;

[0030] S3. Add 1 part of xanthan gum, 2 parts of alginate, 0.3 part of gelatin, 1.5 parts of modified starch, 1 part of modif...

Embodiment 5

[0033] A preparation method of a coking sewage treatment agent, comprising the steps of:

[0034] S1. Weigh 42 parts of water by weight, add 2.8 parts of concentrated sulfuric acid, 2.5 parts of sodium silicate and mix evenly during the stirring process, continue to add 32 parts of calcium oxide, 13 parts of sodium ferrate, 4 parts of polyaluminum chloride, 11.5 parts Stir the polyferric sulfate for 56 minutes, raise the temperature to 63°C and continue stirring for 2 hours, and cool to obtain the prefabricated material;

[0035] S2. Put the prefabricated material obtained in S1 into the reactor, raise the temperature of the reactor to 46°C and stir for 35 minutes, then add 1.7 parts of anionic polyacrylamide, 0.16 parts of aluminum salt, and 0.18 parts of iron salt and stir for 13 minutes. High temperature to 57°C until the reaction is complete;

[0036] S3. Add 1.3 parts of xanthan gum, 1.6 parts of alginate, 0.5 part of gelatin, 1.35 parts of modified starch, 1.25 parts of...

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Abstract

The invention discloses a preparation method for a coking wastewater treating agent. The preparation method comprises the following steps: adding concentrated sulfuric acid and sodium silicate into water to uniformly mix in a stirring process, continuously adding calcium oxide, sodium ferrate, polyaluminum chloride and polyferric sulfate to continuously stir, and cooling to obtain pre-prepared materials; putting the pre-prepared materials into a reaction kettle, rising the temperature of the reaction kettle to stir, adding anionic polyacrylamide,an aluminum salt and a ferric salt to stir, and continuously rising the temperature until reacting completely; sequentially adding xanthan gum, sodium alginate, gelatin, modified starch, modified fibers, lignin and gum into the obtained materails to uniformly stir at a normal temperature, and rising the temperature to continuously stir; sequentially adding polyaluminum silicate chloride and boric acid into the obtained materials to stir, rising the temperature, adding potassium permanganate and isooctane to stir, and cooling to the room temperature to obtain the coking wastewater treating agent. The preparation method disclosed by the invention is simple, the effect of treating the coking wastewater by the coking wastewater treating agent is good, and emission standards can be reached without secondary pollution.

Description

technical field [0001] The invention relates to the technical field of sewage treatment agents, in particular to a preparation method of a coking sewage treatment agent. Background technique [0002] With the continuous improvement of people's living standards, environmental protection has become a common concern of people. The discharge of industrial waste water, especially coking water, is an important source of environmental pollution, and the country has also adopted compulsory measures. Standard coking manufacturers have taken compulsory measures such as shutting down, stopping, and switching, so there is an urgent need for an effective coking water treatment agent. At present, for urban sewage, especially for coking plant sewage treatment methods in coal cities, ferrous chloride or aluminum sulfate liquid is generally used for treatment, and the treatment effect is poor. Some main indicators, such as chemical oxygen demand (COD), suspended solids ( The removal rate of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00
Inventor 张启磊
Owner 张启磊