Concrete brick containing sludge burning ash residue

A technology of sludge incineration and concrete bricks, applied in the field of building materials, can solve the problems of difficult treatment and large sludge, and achieve the effects of beautifying the environment, saving resources and solving the problems of subsequent treatment.

Inactive Publication Date: 2010-08-25
SHANGHAI NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the urban sewage is treated, sludge will be produced, the amount of which is large and difficult to deal with

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix 3Kg of cement, 5Kg of sand, 8Kg of stones, 2Kg of sludge incineration ash from urban sewage treatment plants (from Shanghai Taopu sewage treatment plant or Shidongkou sewage treatment plant, the mass ratio of furnace ash to slag is 1:1), chemical chelation Mix 18g of compound stabilizer (ethylenediaminetetraacetic acid) evenly, then add water and stir to form a sticky paste, add it to the concrete pavement brick model, squeeze and compact it, and demould after the water evaporates, which is the same as ordinary concrete components under natural conditions The method can be maintained.

[0024] The sand used is commercially available common yellow sand; the stones are commercially available common melon seeds, and the cement is commercially available Portland cement with a label of 425.

[0025] The test results are: the specifications of the bricks made are 200*100*60, refer to JC / T446-2000 "concrete pavement brick" standard, side length / thickness <5, grade Cc30, co...

Embodiment 2

[0030] 4Kg of cement, 9Kg of stones, 5Kg of sludge incineration ash of urban sewage treatment plant (from Shanghai Taopu sewage treatment plant or Shidongkou sewage treatment plant, the mass ratio of furnace ash to slag is 1:1), chemical chelating stabilizer (B Diamine tetramethylene phosphonic acid) 27g mix evenly, then add appropriate amount of water and stir to form a sticky paste, add it to the concrete pavement brick model, squeeze and tamp it, and demould after the water evaporates, it is the same as ordinary concrete components under natural conditions The method can be maintained. Test result is the same as embodiment 1.

[0031] The stones are commercially available common melon seeds, and the cement is commercially available Portland cement with a label of 425.

[0032] Ethylenediaminetetramethylenephosphonic acid can also be replaced by ethylenediaminetetraacetic acid, aminotriacetic acid, ethylenediaminetetrapropionic acid, aminotrimethylenephosphonic acid or hexa...

Embodiment 3

[0034] 7.5Kg of cement, 7.5Kg of sludge incineration ash from urban sewage treatment plants (from Shanghai Taopu sewage treatment plant or Shidongkou sewage treatment plant, the mass ratio of furnace ash to slag is 1:1.5), chemical chelating stabilizer (B2 Aminetetraacetic acid) 60g mixed evenly, then add appropriate amount of water to stir into a sticky paste, add it to the concrete pavement brick model, squeeze and tamp it, and release the mold after the water evaporates, and then maintain it in the same way as ordinary concrete components under natural conditions . Test result is the same as embodiment 1.

[0035] The cement is a commercially available composite portland cement, grade 425.

[0036] EDTA can also be replaced by aminotriacetic acid, ethylenediaminetetrapropionic acid, aminotrimethylenephosphonic acid, ethylenediaminetetramethylenephosphonic acid or hexamethylenediaminetetramethylenephosphonic acid with the same effect.

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Abstract

The invention discloses a concrete brick containing sludge burning ash residue, the preparation method of which comprises the following steps that: raw materials are uniformly mixed with water to be formed and to be demolded after the moisture is volatized; raw materials comprises 12 to 50 percent of cement, 0 to 30 percent of sand, 0 to 50 percent of stone, 10 to 50 percent of sludge burning ash residue and 0.1 to 0.5 percent of chemical chelating stabilizer (weight ratio); and the chemical chelating stabilizer is of complexone or organic polybasic phosphonic acid. The sludge burning ash residue which is produced in the sewage treatment plant is used for manufacturing the concrete brick, so not only the consumption of other fine aggregates is reduced without reducing the strength, but also the following processing problems of the sludge discharge reduction and sludge burning ash residue are saved, thereby saving the resource and being economical and envionrment-friendly.

Description

technical field [0001] The invention relates to the field of building materials, and discloses a concrete brick, in particular to a concrete brick containing sludge incineration ash. Background technique [0002] After urban sewage is treated, sludge will be produced, which is very large and difficult to deal with. Disposing of these sludges through incineration is one of the main ways to reduce sludge in the future. [0003] Taking Shanghai as an example, Shanghai currently has Taopu Sewage Treatment Plant and Shidongkou Sewage Treatment Plant to incinerate sludge. Taopu Sewage Treatment Plant treats 60,000 cubic meters of sewage per day and produces 6t / d of dry sludge. The incineration ash generated is about 2t / d, and the annual incineration ash is about 700 tons; the Shidongkou sewage treatment plant treats 400,000 cubic meters of sewage every day, and produces 60t / d of dry sludge, and part of the sludge is incinerated to produce 15t of incineration ash every day / d is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C1/00C04B28/00C04B18/10
CPCC04B28/02Y02W30/91C04B14/041C04B14/06C04B18/08C04B2103/0086C04B24/12C04B24/243
Inventor 陈兴凡童飞何春桃胡玉民褚联峰蒋锐
Owner SHANGHAI NORMAL UNIVERSITY
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