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Sludge curing agent and application thereof

A curing agent and sludge technology, which is applied in the field of curing chemicals, can solve the problems of large proportion of foreign materials, difficulty in dehydrating sludge, and low strength of consolidated bodies, so as to eliminate adverse effects, reduce road construction costs, Good board performance

Active Publication Date: 2009-11-25
BEIJING ZHONGYONGJI FIRMING AGENT TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a sludge solidifying agent with less addition amount, high strength of sludge consolidated body, good water resistance and its application as dredging solidifying agent, roadbed soil solidifying agent and water body bottom sludge leak-proof curing agent , which solves the shortcomings of the existing sludge solidification technology, such as low strength of the consolidated body, difficulty in dehydrating the sludge, and a large proportion of externally added materials

Method used

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  • Sludge curing agent and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1 gets each raw material component of sludge curing agent by following weight ratio:

[0024] The powder raw materials are: ordinary portland cement clinker 45kg, active slag 40kg, slaked lime 5kg, gypsum 5kg, sodium sulfate 5kg;

[0025] The raw materials of the liquid preparation are: 15 kg of polyacrylamide, 75 kg of calcium lignosulfonate, 2.0 kg of alkylphenol polyoxyethylene ether (OP-10), and 2.5 kg of α-olefin sulfonate.

[0026] The raw materials of the powder are ground into fine powders of about 200 meshes, mixed evenly, and the components of the liquid are mixed to obtain the powder and liquid of the sludge curing agent.

Embodiment 2

[0030] Embodiment 2 gets each raw material component of sludge solidifying agent by following weight ratio:

[0031] The powder raw materials are: Portland cement clinker 30kg, active slag 60kg, lime 4kg, gypsum 2kg, aluminum sulfate 4kg;

[0032] The raw material composition of the solution is: polyacrylamide 30kg, polyaluminum chloride 5kg, mannitol 5kg, sodium lignosulfonate 20kg, complex compound of sodium lignosulfonate and iron ion 30kg, alkylphenol polyoxyethylene ether (OP-7) 2.0kg, tannin 8kg, α-olefin sulfonate 0.2kg.

[0033] The powder raw materials of the above-mentioned sludge solidifying agent are pulverized and then mixed, and the raw materials of the liquid formulation are stirred and mixed evenly to obtain the sludge solidifying agent.

Embodiment 3

[0035] Embodiment 3 gets each raw material component of sludge curing agent by following weight ratio:

[0036] The powder raw materials are: Portland cement clinker 60kg, active slag 30kg, lime 3kg, gypsum 3kg, aluminum sulfate 4kg;

[0037] The raw material composition of liquid preparation is: polyacrylamide 5kg, polyaluminum chloride 10kg, mannitol 20kg, sodium lignosulfonate 60kg, alkylphenol polyoxyethylene ether (OP-15) 0.5kg, tannic acid 1.0kg, Sodium humate 2.0kg, α-olefin sulfonate 0.5kg.

[0038] The powder raw materials of the above-mentioned sludge solidifying agent are pulverized and then mixed, and the raw materials of the liquid formulation are stirred and mixed evenly to obtain the sludge solidifying agent.

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Abstract

The present invention is sludge curing agent and its application, and belongs to the field of soil treating chemicals technology. The sludge curing agent includes powdered components and liquid components, the powdered components include cement clinker 30-60 weight portions, slag 30-60 weight portions, lime 3-8 weight portions, gypsum 1-7 weight portions and other sulfates 1-7 weight portions; and the liquid components include polyacrylamide 5-30 weight portions, polyaluminum chloride 0-20 weight portions, mannitol 0-30 weight portions, lignosulfonate 20-80 weight portions, lignosulfonate-iron or chromium ion complex 0-30 weight portions, alkylphenol ethoxylate 0.2-2 weight portions, tannin 0-10 weight portions, humate 0-10 weight portions, and alpa-olefin sulfonate 0.2-2.5 weight portions. The sludge curing agent has low cost, small consumption, high cumulate strength and high cumulate water tolerance, and may be applied widely.

Description

technical field [0001] The invention belongs to the technical field of chemicals for soil treatment, in particular to a chemical for solidification treatment of soil with different water contents and its application. Background technique [0002] With the development of the global economy and the increase in the activities of transforming the earth's geographical environment, dredging operations of coastal and inland rivers and lakes, as well as dredging of urban waterways are increasing. The amount of silt produced by the dredging of waterways in large and medium-sized cities in my country is nearly 100 million cubic meters every year. The treatment of the sludge generally adopts the method of fixed-point discharge in the sea and land stacking. Since this method has major environmental protection problems that are difficult to solve, it has been changed to artificial digestion methods such as landfilling, solidifying roads, manufacturing building materials, and making ferti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/14C04B18/30C04B28/04C04B18/04
CPCY02W30/91
Inventor 孙建国刘曰键梁力民
Owner BEIJING ZHONGYONGJI FIRMING AGENT TECH DEV
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