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Silt/sludge solidifying agent and application thereof

A sludge solidifying agent and sludge technology, which are used in fixed/solidified sludge treatment, water/sludge/sewage treatment, dewatering/drying/concentrated sludge treatment, etc., to achieve high solidification strength and reduce moisture content.

Active Publication Date: 2016-07-13
BEAUTIFUL ORIENTAL ENVIRONMENTAL PROTECTION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems in the existing sludge solidification materials, the present invention provides a sludge / sludge solidification agent with excellent performance and its application for the solidification treatment of high water content sludge in view of the lake bottom sludge containing a large amount of organic matter and heavy metals. , effectively reduce the moisture content of the silt, solidify heavy metals and other substances in the silt, and increase the strength of the silt to meet the requirements of earthwork filling

Method used

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  • Silt/sludge solidifying agent and application thereof
  • Silt/sludge solidifying agent and application thereof
  • Silt/sludge solidifying agent and application thereof

Examples

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Embodiment Construction

[0012] The present invention will be further described in conjunction with examples.

[0013] Active SiO 2 30%, active Al 2 o 3 10%, active CaO50%, active Fe 2 o 3 5%, active MgO5% mixed in the furnace and calcined for 20 minutes to obtain a sintered product;

[0014] The obtained sinter was mixed with CaSO 4 Mix evenly with nano-silicon dioxide at a ratio of 1:0.05:0.02, grind until D95≤15μm, and obtain nano-micron modified gelling material.

[0015] Raw materials used in each embodiment of table 1 and proportioning unit %

[0016]

[0017] Table 2. is the result of the dehydration and solidification treatment of lake bottom silt by the raw materials and proportioning used in Examples 1 to 7 shown in Table 1.

[0018] Table 2 Effects of dehydration and solidification of sludge

[0019]

[0020]

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Abstract

The invention particularly relates to a silt / sludge solidifying agent and application thereof.The silt / sludge solidifying agent is characterized by being mainly prepared by mixing, by mass, 60-75% of nano-micron modified binding material, 5-10% of poly-aluminum-ferric silicate, 10-20% of zeolite powder or bentonite and 5-15% of quicklime.Paving construction of road filling can be performed by adding the silt / sludge solidifying agent accounting for 10-20% of total amount of silt / sludge into the silt / sludge, mixing and stirring in a stirrer for 10-30 min and placing under sunlight for sufficient irradiation and solidification after stirring is finished.The silt / sludge solidifying agent can lower water content of high-water-content silt / sludge, is high in solidifying strength and capable of effectively solidifying heavy metals in the silt / sludge and reaches requirements of filling and building earth filling.

Description

Technical field: [0001] The invention relates to a silt / sludge solidifying agent and its application. Background technique: [0002] There are many lakes and rivers in inland cities, and there is a lot of silt accumulation on the bottom of the water. However, the collection and treatment of silt often require a large amount of engineering and cost an astonishing amount of money. For example, in the east route project of the South-to-North Water Diversion Project, the cost of land acquisition for the dredged silt was as high as 640 million yuan. Moreover, these piled silts have high moisture content, low strength, and some harmful components such as toxic chemicals and pathogenic organisms. Many developed countries in foreign countries have carried out comprehensive development and utilization of silt through commercial methods such as silt manufacturing of high-efficiency purification fuels and building materials. However, in China, due to technical and financial reasons,...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/14
CPCC02F11/008C02F11/14C02F2303/06
Inventor 陈士强罗昕黄鹏刘亚威
Owner BEAUTIFUL ORIENTAL ENVIRONMENTAL PROTECTION CO LTD
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