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Composite uncoupling agent and preparation method thereof

An uncoupling agent and uniform mixing technology, applied in chemical instruments and methods, special treatment targets, water/sludge/sewage treatment, etc., can solve problems such as sludge activity reduction, and achieve sludge activity improvement and COD removal. The effect of improving the rate and good water effluent effect

Inactive Publication Date: 2018-02-27
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of composite uncoupling agent and preparation method thereof, it is main component with dicoumarin, after adding other components, can effectively solve the problem caused by the addition of dicoumarin in the sewage treatment system And lead to the technical problem of sludge activity reduction

Method used

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  • Composite uncoupling agent and preparation method thereof
  • Composite uncoupling agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5 and comparative example 1～5

[0021] In following examples 1~5 and comparative examples 1~5:

[0022] (1) The sludge volume reduction rate is defined as:

[0023]

[0024] Among them, the sludge production rate I is the sludge production rate of the device unit without adding a decoupling agent in the system, and the sludge production rate II is the sludge production rate of the device unit after adding a decoupling agent in the system;

[0025] (2) The tourmaline is single crystal tourmaline from Xinjiang Atele, the crystal structure is trigonal, black columnar, the crystal is relatively complete, and the particle size range is ≤1cm;

[0026] The weight ratio of dicoumarin and tourmaline in embodiment 1~5, as shown in table 1:

[0027] Table 1

[0028] Example

Embodiment 1

[0030] A kind of composite uncoupling agent, comprises component and is the dicoumarin (3,3'-methylene bis(4-hydroxycoumarin)) and tourmaline that concentration is 10mg / L, described dicoumarin The weight ratio of bean element and tourmaline is 1:1000.

[0031] The preparation method of described compound uncoupling agent, comprises the following steps:

[0032] According to the proportion, dicoumarin and tourmaline are taken, and the two are uniformly mixed in solid form to obtain a composite uncoupling agent.

Embodiment 2

[0034] A kind of composite uncoupling agent, comprises component and is the dicoumarin (3,3'-methylene bis(4-hydroxycoumarin)) and tourmaline that concentration is 8mg / L, described dicoumarin The weight ratio of bean element and tourmaline is 1:2000.

[0035] The preparation method of described compound uncoupling agent, comprises the following steps:

[0036] According to the proportion, dicoumarin and tourmaline are taken, and the two are uniformly mixed in solid form to obtain a composite uncoupling agent.

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Abstract

The invention discloses a composite uncoupling agent and a preparation method thereof, and belongs to the technical field of uncoupling agents. The composite uncoupling agent comprises bishydroxycoumarin (3,3'-methylene bis(4-hydroxycoumarin) and tourmaline, wherein the weight ratio of the bishydroxycoumarin to the tourmaline is 1 to (1,000 to 5,000). The preparation method of the composite uncoupling agent comprises the following steps: proportionally taking the bishydroxycoumarin and the tourmaline, and uniformly mixing the two in a solid form to obtain the composite uncoupling agent. The uncoupling agent provided by the invention maintains good sludge reduction property, and also can significantly relieve the decline of sludge activity, showing a noticeable positive effect; to reach thesame sludge reduction rate, the sludge activity can be improved by 20%, and the water treatment effect can be improved by 40%; after the composite uncoupling agent is added into the system, the COD removal rate is basically not influenced.

Description

Technical field: [0001] The invention belongs to the technical field of uncoupling agents, and in particular relates to a composite uncoupling agent and a preparation method thereof. Background technique: [0002] Activated sludge method is currently the most widely used sewage biological treatment technology. Although this process technology has many advantages, such as less investment in infrastructure, good treatment effect, stable operation, etc., it also has a significant disadvantage, that is, in the process of operation A large amount of residual sludge will be produced. The treatment cost of excess sludge is quite high, which generally accounts for 25-65% of the total operating cost of the sewage plant. Therefore, reducing or reducing the generation rate of excess sludge in the activated sludge sewage treatment process has always been a subject of great concern. The commonly used sludge reduction technologies mainly include delayed aeration method, pure oxygen aerat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/12C02F3/28C02F3/30C02F11/00
CPCC02F3/12C02F3/1221C02F3/28C02F3/30C02F3/34C02F11/00C02F2303/06Y02W10/10
Inventor 李军杨佳夫
Owner SHENYANG JIANZHU UNIVERSITY
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