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Papermaking sludge conditioning agent and application thereof

A technology of papermaking sludge and chemicals, which is applied in sludge treatment, water/sludge/sewage treatment, sludge oxidation treatment, etc. It can solve the problems of low calorific value of combustion and difficulty in dehydration of papermaking sludge, and achieve calorific value Improve, excellent oxidation bleaching, and accelerate the effect of filtration speed

Pending Publication Date: 2020-04-10
HENAN ACADEMY OF SCI CHEM RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of difficult dehydration and low combustion calorific value of papermaking sludge in the prior art, the present invention provides a conditioning agent for papermaking sludge, which uses sawdust powder as a skeleton construct and is oxidized and compounded with ferrate to significantly improve pollution. Dehydration effect of mud

Method used

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  • Papermaking sludge conditioning agent and application thereof
  • Papermaking sludge conditioning agent and application thereof

Examples

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Effect test

Embodiment 1

[0020] A paper-making sludge conditioning agent, which is composed of sodium ferrate and pine sawdust powder. The paper-making sludge can be dehydrated by using the conditioning agent. The specific process is as follows:

[0021] Under the action of stirring, 40 mg / g sodium ferrate was added to the sludge on a dry basis, and the reaction was mixed for 10 minutes, and the amount of sodium ferrate added was based on the mass of iron ions; Measuring, adding 400mg / g pine sawdust powder, mixing for 1min, and the resulting sludge mixture is left standing for treatment.

Embodiment 2

[0023] A paper-making sludge conditioning agent, which is composed of potassium ferrate and pine sawdust powder. The paper-making sludge can be dehydrated by using the conditioning agent. The specific process is as follows:

[0024] Under the action of stirring, 60 mg / g potassium ferrate was added to the sludge on a dry basis, and the reaction was mixed for 30 minutes, and the amount of potassium ferrate added was based on the mass of iron ions; Measuring, adding 500mg / g pine sawdust powder, mixing for 5min, and standing the sludge mixture for disposal.

Embodiment 3

[0026] A paper-making sludge conditioning agent, which is composed of sodium ferrate and poplar sawdust powder. The paper-making sludge can be dehydrated by using the conditioning agent. The specific process is as follows:

[0027] Under the action of stirring, 50 mg / g sodium ferrate was added to the sludge on a dry basis, and the reaction was mixed for 20 minutes, and the amount of sodium ferrate added was based on the mass of iron ions; Measuring, adding 450mg / g poplar sawdust powder, mixing for 3min, and the resulting sludge mixture is left standing for disposal.

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Abstract

The invention relates to the technical field of papermaking sludge treatment, and more specifically relates to a papermaking sludge conditioning agent and application thereof. The papermaking sludge conditioning agent is composed of a ferrate and sawdust powder, can improve the sludge dewatering effect, and is low in raw material cost; resource utilization of forestry waste sawdust can be achieved; the production cost of the papermaking sludge conditioning agent is reduced, and the papermaking sludge conditioning agent can be widely applied to sludge pre-conditioning and has good application prospects.

Description

technical field [0001] The invention relates to the technical field of papermaking sludge treatment, in particular to a papermaking sludge conditioning agent and its application. Background technique [0002] The main treatment methods of papermaking sludge are incineration, biological treatment and land use of sludge. Among them, sludge incineration can effectively solve the problem of sludge outlet, make full use of the energy in sludge, and sludge does not need to be treated for pathogenic bacteria, but sludge incineration needs to ensure that the sludge has a relatively low moisture content, so it needs to increase Dewatering degree of sludge. [0003] However, because the sludge contains highly hydrophilic sludge particles and extracellular polymers, the sludge is easily deformed under pressure, and it is difficult to improve the dehydration efficiency of the sludge by mechanical means. After dehydration, the sludge cake has a large amount and contains water. High rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/143C02F11/06C02F103/28
CPCC02F11/06C02F2103/28C02F11/143
Inventor 赵亮许欣欣王俊李箐湲
Owner HENAN ACADEMY OF SCI CHEM RES INST CO LTD
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