Sintered light environmental-friendly brick produced by using municipal sludge and manufacture method thereof

A technology of urban sludge and environmental protection bricks, applied in the direction of building structure, building components, buildings, etc., can solve the problems of environmental hazards, complex sludge composition, polluted soil and groundwater resources, etc., and achieve the effect of energy saving

Active Publication Date: 2011-05-11
清远绿由环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition of sludge is relatively complex, especially heavy metals. If it is directly buried without treatment, it will pollute soil and groundwater resources, easily cause secondary pollution, and cause harm to the environment.

Method used

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  • Sintered light environmental-friendly brick produced by using municipal sludge and manufacture method thereof
  • Sintered light environmental-friendly brick produced by using municipal sludge and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] It is made by dehydrating, deodorizing, disinfecting and chelating the mixture of sediments and residues floating on the surface of sewage generated during the treatment of domestic sewage and industrial wastewater by urban sewage treatment plants, and then separated by wheel grinding. Sludge powder with particle size less than -3mm;

[0038] The waste slag discharged from various types of coal after being burned by the boiler is crushed, sorted, crushed, and magnetically separated to remove scrap metal, and the crushed particle size is slag powder with a particle size of less than -3mm;

[0039]The waste slag discharged from domestic waste after incineration is sorted, crushed, and magnetically separated to remove waste metal, and the crushed particle size is less than -3mm. Garbage ash powder;

[0040] Fusible clay, plasticity index above 15% and drying sensitivity, clay powder with a finely ground particle size of less than -2mm,

[0041] Take 35kg of sludge powder ...

Embodiment 2

[0043] Get the sludge powder material 40kg of embodiment 1, slag powder material 20kg, refuse ash powder material 18kg, clay powder material 25kg, particle diameter be the calcium oxide 18kg of 0.2mm, calcium sulfate 4kg, sodium carbonate 2kg, calcium chloride 1.5 kg, 2 kg of ferrous sulfate, 4 kg of magnesium sulfate, 0.4 kg of Li macromolecule heavy metal collector and 14 kg of water, the above raw materials are mixed with a twin-shaft mixer to be wet, and then extruded by a vacuum extruder and cut into shape by a billet cutter , under the pressure of 25Mpa, the sludge light-weight environmental protection bricks are made, and after natural drying for 7 days, the formed sludge environmental protection bricks are sent to the wheel kiln with a battery car for roasting, and the sludge light-weight bricks are made after roasting. High-quality environmentally friendly brick products. After testing, the average compressive strength is: 11Mpa, and the flexural strength is: 2.97Mpa....

Embodiment 3

[0045] Get embodiment 1 sludge powder 50kg, slag powder 30kg, garbage ash powder 25kg, clay powder 30kg, particle diameter is the calcium oxide 25kg of-0.2mm, calcium sulfate 6kg, sodium carbonate 3kg, calcium chloride 2kg , 3 kg of ferrous sulfate, 6 kg of magnesium sulfate, 0.6 kg of Li polymer heavy metal collector and 20 kg of water, the above raw materials are mixed and stirred to become moist, and then extruded with mechanical vibration to make sludge light weight under the pressure of 30Mpa. After the hollow block is naturally dried for 7 days, the formed and naturally dried sludge lightweight hollow block is sent to the wheel kiln for roasting by a battery car, and the sludge lightweight hollow block product is made after roasting. After testing, the average compressive strength is: 8.4Mpa, the minimum value of a single block is: 7.9Mpa, the dry apparent density is: 1052kg / m3, and the drying shrinkage rate is: 0.023%, all of which are better than the national standard o...

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Abstract

The invention relates to a sintered light environmental-friendly brick produced by using municipal sludge and a manufacture method thereof. The manufacture method is characterized by comprising the steps of: adding sludge, slag, rubbish ash, clay, calcium oxide, calcium sulfate, sodium carbonate, calcium chloride, ferrous sulfate, magnesium sulfate, an Li macromolecule heavy metal trapping agent and water as raw materials; mixing and stirring to be in a wet state and then extruding through an airing extruder, cutting and forming through a blanking machine; preparing a sludge light environmental-friendly brick blank under the pressure of 25-30MPa; and forming the naturally dried light environmental-friendly brick blank in an annular kiln for roasting and then preparing the light environmental-friendly brick. According to the invention, different specifications of building-blocks and sidewalk bricks can be manufactured by using the raw materials. The sintered light environmental-friendly brick has the advantages and effects of light weight, high strength, no pollution, low cost and good benefit.

Description

technical field [0001] The invention relates to a sintered lightweight environmental protection brick produced by using urban sludge, specifically, it is a sintered lightweight environmentally friendly brick produced by using urban sludge and dehydrated dry mud powder as main raw materials, and belongs to the field of waste treatment. [0002] The invention also relates to a manufacturing method of the sintered lightweight environmental protection brick. Background technique [0003] Municipal sludge is the solid waste separated from the sewage treatment process in the sewage treatment plant. The composition and source of the sludge are relatively complex, which contains a large amount of nitrogen, phosphorus, potassium and other nutrients, organic substances and heavy metal elements, etc. Poisonous and hazardous substances. With the rapid development of my country's industrial production and economy and the continuous increase of urban population, the discharge of industri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C1/39
Inventor 李桓宇古耀坤
Owner 清远绿由环保科技有限公司
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