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Sludge curing agent and sludge curing process employing sludge curing agent

A solidifying agent and sludge technology, applied in solid waste management, dewatering/drying/concentrating sludge treatment, sustainable waste treatment, etc. Good curing effect, stable mechanical properties and simple composition

Active Publication Date: 2014-09-03
GUANGZHOU WATER CONSERVANCY & HYDROPOWER STATION CONSTR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above solidification technologies are not only complicated in composition, but also high in cost of raw materials, which increases the application cost of solidified soil. At the same time, various additives and additives used are harmful to the environment and easily cause soil and environmental pollution.

Method used

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  • Sludge curing agent and sludge curing process employing sludge curing agent
  • Sludge curing agent and sludge curing process employing sludge curing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of method utilizing above-mentioned sludge curing agent to carry out sludge solidification treatment, it comprises the following steps:

[0033] a. Sludge with a water content of 70%-90% is sent from the feed port to the pretreatment grid through the sludge pump for pretreatment to remove impurities and then sent to the sludge storage tank (1);

[0034] b. Send the sludge in the mud storage tank (1) to the concrete pump (2) through the first conveying device (4), and then to the screw mixer (3) through the pipeline (6), and at the same time, the powder The curing agent is added to the screw mixer (3) through the curing agent addition inlet (18) through the powder supply machine and the constant pressure and constant flow pump together with the curing agent described in the present invention;

[0035] c. Send the solidified mud to the landfill through the second delivery device (9).

[0036] The silt in this example is common silty marine silt from Liaodong, Hebe...

Embodiment 2

[0039] A kind of method utilizing above-mentioned sludge curing agent to carry out sludge solidification treatment, it comprises the following steps:

[0040] a. Sludge with a water content of 70%-90% is sent from the feed port to the pretreatment grid through the sludge pump for pretreatment to remove impurities and then sent to the sludge storage tank (1);

[0041] b. Send the sludge in the mud storage tank (1) to the concrete pump (2) through the first conveying device (4), and then to the screw mixer (3) through the pipeline (6), and at the same time, the powder The curing agent is added to the screw mixer (3) through the curing agent addition inlet (18) through the powder supply machine and the constant pressure and constant flow pump together with the curing agent described in the present invention;

[0042] c. Send the solidified mud to the landfill through the second delivery device (9).

[0043] The silt in this example is common silty marine silt from Liaodong, Hebe...

Embodiment 3

[0046] A kind of method utilizing above-mentioned sludge curing agent to carry out sludge solidification treatment, it comprises the following steps:

[0047] a. Sludge with a water content of 70%-90% is sent from the feed port to the pretreatment grid through the sludge pump for pretreatment to remove impurities and then sent to the sludge storage tank (1);

[0048] b. Send the sludge in the mud storage tank (1) to the concrete pump (2) through the first conveying device (4), and then to the screw mixer (3) through the pipeline (6), and at the same time, the powder The curing agent is added to the screw mixer (3) through the curing agent addition inlet (18) through the powder supply machine and the constant pressure and constant flow pump together with the curing agent described in the present invention;

[0049] c. Send the solidified mud to the landfill through the second delivery device (9).

[0050] The silt in this example is common silty marine silt from Liaodong, Hebe...

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Abstract

The invention relates to a sludge curing agent and an application thereof in sludge curing treatment, and belongs to the field of sludge treatment. In order to overcome the technical defect of poor curing effect of the existing sludge curing agent in the prior art, the sludge curing agent which is low in cost and good in curing effect is provided by the invention. The sludge curing agent comprises the following components in parts by weight: 25 to 45 parts of coal ash, 20 to 30 parts of swollen resin, 15 to 20 parts of cement, 7 to 9 parts of water glass, 10 to 12 parts of kieselguhr, 10 to 12 parts of quick lime, 6 to 9 parts of sodium hydroxide, 3 to 8 parts of aluminum sulfate, 8 to 10 parts of polyacrylamide, 6 to 8 parts of magnesium perchlorate and 5 to 15 parts of quartz sand. The sludge curing agent has the advantages of high curing efficiency and large hardness when being applied to the sludge curing treatment. Thus, the sludge curing agent is very suitable for the sludge curing treatment for water conservancy.

Description

technical field [0001] The invention relates to a sludge solidifying agent and its application in sludge solidification treatment, belonging to the field of sewage treatment. Background technique [0002] With the development of the national economy, environmental pollution is becoming more and more serious. Compared with the past, people have more urgent needs for environmental governance. However, with the diversification of industrial development, the sources of pollution are also more complicated. For example, in urban sewage, there are various sewage collected from residential buildings, units, schools, hospitals and public facilities drainage agencies. Sludge is an accessory of sewage treatment. Most of the components in sewage that cannot be filtered or digested are concentrated in the sludge. The sludge treatment process mainly includes concentration, dehydration, digestion, fermentation, drying and other processes. Sludge can be reduced and recycled through sanitar...

Claims

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Application Information

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IPC IPC(8): C04B28/00C02F11/14C04B18/08C04B14/06C04B22/06C04B22/14C04B22/12
CPCY02W30/91
Inventor 陈永喜赵志杰赖佑贤刘洪涛李东文李晓作陈健陈伟梁
Owner GUANGZHOU WATER CONSERVANCY & HYDROPOWER STATION CONSTR ENG
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