Sludge-zeolite water purification type ecological concrete and preparation method thereof

An ecological concrete and water-purifying technology, which can be applied to ceramic products, other household utensils, sustainable waste treatment, etc., can solve the problems of low water purification performance of ecological concrete, and achieve the effect of low-cost finished products and simple process

Inactive Publication Date: 2014-08-27
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of sludge-zeolite water purification type ecological concrete

Method used

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  • Sludge-zeolite water purification type ecological concrete and preparation method thereof
  • Sludge-zeolite water purification type ecological concrete and preparation method thereof
  • Sludge-zeolite water purification type ecological concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] The remaining sludge of centrifugal dehydration in a sewage treatment plant in Dalian has a moisture content of 20-30%. The chemical composition of the remaining sludge is shown in Table 1

[0025] Table 1 Chemical Composition of Remaining Sludge (%)

[0026]

[0027] The natural zeolite, excess sludge, cement, water, and admixtures were prepared according to the following proportions (see Table 2) for the preparation of sludge-based water-purifying ecological concrete.

[0028] Table 2 Different mix proportions of sludge-zeolite water purification type ecological concrete

[0029]

[0030] After the bio-concrete blocks prepared in Examples 1-5 are soaked in tap water to reduce alkali, the artificially configured simulated domestic wastewater solution is used to soak the ecological concrete specimen for 20 d, and the natural light is irradiated to simulate a closed water environment (such as a lake, a reservoir), and the determination The water quality changes t...

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PUM

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Abstract

The invention discloses sludge-zeolite water purification type ecological concrete and a preparation method thereof and belongs to the technical field of environmental engineering water body remediation. The preparation method is characterized by comprising the following steps: by taking sludge, natural zeolite, cement, water and a water reducing agent as raw materials of concrete, uniformly stirring, performing casting molding by utilizing a forming die, and curing for not less than 28 days under natural conditions to obtain an ecological concrete product, wherein the ecological concrete has crunchy rice candy-shaped continuous connected structure pores and is suitable for river slope protection, greening and the like. The sludge-zeolite water purification type ecological concrete and the preparation method thereof have the beneficial effects that the preparation process is simple, the finished product is low in price, common natural gravels are replaced by using zeolite, the adsorptive property of the concrete is enhanced, the concrete is recycled by adding the sludge, N, P and K can be slowly released due to sludge solidification, microbial biofilm formation growth is promoted, and the ecological concrete has wide application prospects in ecological river slope protection, eutrophic water body purification and river bank greening.

Description

technical field [0001] The invention belongs to the technical field of water body restoration in environmental engineering, and relates to a sludge-zeolite water-purifying ecological concrete and a preparation method thereof. Background technique [0002] In recent years, with the development of social economy and urbanization, the pollution of rivers, lakes and reservoirs in my country has become increasingly serious. How to prevent and control water pollution and the research on the restoration technology of polluted water has become the focus of research on water environment protection. In the late 1960s, western developed countries such as Germany and Switzerland had deeply realized that concrete revetment was the root cause of river pollution, and began to apply ecological principles to civil engineering to restore the experimental research of damaged riverbank ecosystems. At the end of the 1980s, the "natural revetment" technology was proposed; in the 1990s, Germany, ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/00C04B14/04C04B18/30
CPCY02W30/91
Inventor 项学敏佟洁王竞周集体王晓坤任晓莉
Owner DALIAN UNIV OF TECH
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