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Biomass modified sludge sintered brick and preparation method thereof

A technology of biomass and sintered bricks, which is applied in the field of solid waste resource utilization and building materials, which can solve the problems of difficult dehydration, difficulty in directly preparing sintered bricks, environmental hazards, etc.

Inactive Publication Date: 2018-06-22
上海鑫晶山建材开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the acceleration of urbanization in our country, the discharge of domestic sewage has increased greatly and the deepening of sewage treatment technology has led to a rapid increase in the discharge of sludge from sewage plants. The situation of its treatment and utilization is very urgent. Improper disposal will significantly affect the safe development of urbanization and affect the environment. cause serious harm
The use of sludge in sintered bricks is a resourceful road with significant environmental benefits. However, due to the high moisture content of sludge, the difficulty of dehydration, and the difficulty of mixing evenly with other clay materials, it is difficult to meet the requirements of direct preparation of sintered bricks.
At present, the pretreatment process of sludge recycling is mainly filter press dehydration or drying dehydration, which requires sintered brick enterprises to increase investment in dehydration equipment, which leads to increased production costs of sintered bricks and poor economic benefits

Method used

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  • Biomass modified sludge sintered brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of biomass modified sludge sintered bricks, comprising the following steps:

[0030] 1) Break the sawdust and straw into 0~3mm biomass particles.

[0031] 2) The calorific value of biomass particles is 2300kcal, and the calorific value of sludge is 700kcal. The mass percentage of biomass particles and sewage sludge is 10:90. After mixing and stirring, ferment for 5 days.

[0032] 3) The fermented mixture is mixed with the foundation pit soil at a mass ratio of 45:55, stirred evenly, and then entered into the aging warehouse for aging. The aging time is 1d.

[0033] 4) Crush the cinder into particles of 0~3mm, and mix and stir the aged mixture and cinder at a mass ratio of 85:15;

[0034] 5) The uniformly stirred billet is pressure-formed and the semi-hard extrusion process is used to make the billet, and the pressure is 2.3MPa;

[0035] 6) The green body enters the drying room and is dried for 2 hours at 200°C. ;

[0036] 7) The dried body enter...

Embodiment 2

[0038] A preparation method of biomass modified sludge sintered bricks, comprising the following steps:

[0039] 1) Break the sawdust and straw into 0~3mm biomass particles.

[0040] 2) The calorific value of biomass particles is 2000kcal, and the calorific value of sludge is 850kcal. The mass percentage of biomass particles and sewage sludge is 15:85. After mixing and stirring evenly, ferment for 7 days.

[0041] 3) The fermented mixture is mixed with the foundation pit soil at a mass ratio of 35:65, stirred evenly, and then entered into the aging warehouse for aging. The aging time is 3 days.

[0042] 4) Crush the cinder into particles of 0~3mm, and mix and stir the aged mixture and cinder at a mass ratio of 75:25;

[0043] 5) After the billet is evenly stirred, it is press-formed and the semi-hard extrusion process is used to make the billet, and the pressure is 2.7MPa;

[0044] 6) The green body enters the drying room and is dried for 3 hours at 150°C. ;

[0045] 7) Th...

Embodiment 3

[0047] A preparation method of biomass modified sludge sintered bricks, comprising the following steps:

[0048] 1) Break the sawdust and straw into 0~3mm biomass particles.

[0049] 2) The calorific value of biomass particles is 2100kcal, and the calorific value of sludge is 750kcal. The mass percentage of biomass particles and sewage sludge is 15:85. After mixing and stirring evenly, ferment for 6 days.

[0050] 3) The fermented mixture is mixed with the foundation pit soil at a mass ratio of 40:60, stirred evenly, and then entered into the aging warehouse for aging, and the aging time is 2 days.

[0051] 4) Crush the cinder into particles of 0~3mm, and mix and stir the aged mixture and cinder at a mass ratio of 80:20;

[0052] 5) After the billet is evenly stirred, it is press-formed and the semi-hard extrusion process is used to make the billet, and the pressure is 2.5MPa;

[0053] 6) The green body enters the drying room and is dried for 3 hours at 160°C. ;

[0054] 7...

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Abstract

The invention discloses a biomass modified sludge sintered brick and a preparation method thereof. Saw dust and stalks are crushed into particles being 0 to 3mm; the particles are uniformly mixed andstirred with sludge in a sewage plant; after the fermentation for 5 to 8 days, the mixture is mixed and stirred with foundation pit soil; the materials enter an aging base for aging; after the aging,coal slag is added; stirring is performed; then, shaping and blank manufacturing are performed; the blank body enters a drying chamber to be dried; then, a tunnel kiln is used for roasting. The sludgein the sewage plant is modified by using biomass materials such as the saw dust and the stalks; the sludge water content is reduced; the mixing performance of the sludge is optimized; the blank material uniformity is improved; meanwhile, the internal combustion effect of the sintered brick is improved; the sludge in the sewage plant can realize the resource utilization in the sintered brick; meanwhile, the fuel consumption is reduced; the obvious environment and social benefits are realized.

Description

technical field [0001] The invention relates to a biomass modified sludge sintered brick and a preparation method thereof, in particular to a process method of using biomass materials to modify sewage plant sludge and prepare sintered bricks, which belongs to the utilization of solid waste resources and building materials technology field. Background technique [0002] With the acceleration of urbanization in my country, the discharge of domestic sewage and the deepening of sewage treatment technology have led to a rapid increase in the discharge of sludge from sewage plants. The situation of its treatment and utilization is very urgent. Improper disposal will significantly affect the safe development of urbanization and affect the environment. cause serious harm. The use of sludge in sintered bricks is a resourceful road with significant environmental benefits. However, due to the high moisture content of sludge, the difficulty of dehydration, and the difficulty of mixing e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/135C04B33/04
CPCC04B33/04C04B33/1321C04B33/1352C04B2235/96C04B2235/77C04B2235/6567Y02P40/60
Inventor 陈永忠柯建航
Owner 上海鑫晶山建材开发有限公司
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