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Preparation method of fly ash-waste glass powder inorganic polymer silt-solidifying material

An inorganic polymer, waste glass technology, applied in solid waste management, sustainable waste treatment, climate sustainability, etc., can solve problems such as large drying shrinkage, easy cracking, and slow development of consolidated strength

Active Publication Date: 2015-12-16
内蒙古宇翼环保科技开发有限责任公司
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the traditional fly ash-cement inorganic polymer sludge solidification material uses a large amount of cement, the strength of the solidified body develops slowly, has large drying shrinkage, and is easy to crack.

Method used

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  • Preparation method of fly ash-waste glass powder inorganic polymer silt-solidifying material

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Embodiment 1

[0026] The preparation method of fly ash-waste glass powder inorganic polymer sludge solidification material comprises the following steps:

[0027] 1. Pretreatment of sludge

[0028] After fully stirring the sludge obtained from sewage treatment plants, river dredging and reclamation projects, place it in the open air with a roof for 7-10 days, dehydrate and dry it at 60-80°C, crush it and pass it through a 5mm square hole sieve to remove the sludge various impurities. The treated sludge was taken to determine the leaching amount of heavy metals in the sludge according to the American Environmental Protection Summer Toxic Characteristic Leaching Method (TCLP, EPAMethod1311).

[0029] 2. Preparation of fly ash-waste glass powder inorganic polymer sludge solidification material

[0030] 2.1. Raw materials

[0031] Sorting, cleaning, drying, and crushing waste white glass beverage bottles and passing through a 5mm square hole sieve to remove impurities and irregular particles...

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Abstract

The invention discloses a preparation method of fly ash-waste glass powder inorganic polymer silt-solidifying material. The preparation method includes: mixing fly ash with pretreated waste glass powder; adding sodium hydroxide and sodium pyrosulfite composite excitant solution; preparing the fly ash-waste glass powder inorganic polymer silt-solidifying material to solidify silt. By using this inorganic polymer to solidify silt, on one hand, the defect that the preparation process of traditional fly ash-waste glass powder inorganic polymer silt-solidifying material needs a great amount of cement for use is overcome, and environmental impact by the emission of industrial dust and greenhouse gases such as CO2 generated in cement production is decreased; on the other hand, the fly ash and waste glass powder solid wastes are used to prepare the silt-solidifying material, the industrial wastes such as the fly ash and the waste glass powder are fully recycled and are massively consumed, and the problem that a traditional backfilling method requires massive land and causes severe pollution to the surroundings while disposing these solid wastes is avoided.

Description

technical field [0001] The invention belongs to the fields of solid waste recycling and utilization and preparation of solidified pollutant materials. Specifically relates to a preparation method of fly ash-waste glass powder inorganic polymer sludge solidification material. Background technique [0002] With the rapid development of my country's ports, waterways, offshore and marine engineering construction, the amount of silt removed from various projects is increasing every year. In 2010, the total amount of silt produced in the Pearl River Delta region of my country reached 80 million m 3 . Sludge contains a large amount of toxic heavy metal elements. If no measures are taken to dump it directly, it will pollute the soil and water, and seriously endanger people's health. The traditional method of dumping sludge has great limitations and high processing costs, which can no longer meet the actual needs. Finding a more effective and economical method to dispose of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B22/14C04B22/06C04B18/20
CPCY02W30/91
Inventor 赵晖杜杨韩颖王潘绣徐海生
Owner 内蒙古宇翼环保科技开发有限责任公司
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