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Process for preparing bricks from sludge

A technology of sludge brick making and process, which is applied in the directions of sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. It can solve the problems of poor brick quality and unsuitable for construction use, etc. To achieve the effect of not easy to crack

Inactive Publication Date: 2018-12-21
南京胜仁市政建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the quality of the bricks obtained by the existing sludge brick making method is too poor, and it is not suitable for construction use at all.

Method used

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Embodiment

[0010] A kind of technology of brick making with sludge, is characterized in that, comprises the following steps:

[0011] Step 1: Use a filter screen of 80-160 mesh. The filter screen has three layers, namely 80 mesh, 120 mesh and 160 mesh. Filtration to filter out silt-like solid impurities in the sludge; Step 2: Add quicklime to the sludge obtained after filtration, the weight ratio of sludge to quicklime is 3:2, and then mix evenly by mechanical stirring; Step 3 ) Add iron powder and clay to the uniformly stirred sludge-quicklime mixture, the weight ratio of the mixture, iron powder and clay is 8:1:3, stir again by mechanical, and mix evenly to obtain the mud material; Step 4: Put the mud Beat the raw material for 45-60 minutes at a speed of 60 times per minute, and then cut and shape the mud material through a mold to obtain adobe; Step 5: send the adobe into a closed kiln for calcination, and keep the temperature in the kiln at 1000 ° C ~ Calcining at 1100°C for 1-1.5 h...

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Abstract

The invention discloses a process for preparing bricks from sludge. The sludge is filtered more than once with a filter screen of 80-160 meshes to filter out silt-like solid impurities in the sludge.The process fully utilizes the sludge in a sewage treatment plant, which not only solves the problem of sludge pollution treatment of the sewage treatment plant, but also is beneficial to environmental protection, and relates to comprehensive utilization of resources; and the prepared baking-free bricks have high strength and good durability.

Description

technical field [0001] The invention relates to a method for making high-hardness bricks from sludge. Background technique [0002] At present, with the continuous development of environmental protection in our country, a large number of sewage treatment plants have been built all over the country to treat the domestic and production sewage generated in cities, so that water resources can be recycled, but the large amount of sewage produced by sewage treatment plants Sludge has not been treated or utilized effectively, often causing secondary pollution to the environment. For example, the Longquan Sewage Treatment Plant in Zhuzhou has a total sewage treatment capacity of 100,000 tons per day, and its sewage treatment effect is up to standard. The tail water that has been treated by the Longquan Sewage Treatment Plant and discharged up to the standard can become a continuous source of living water for the nearby East Lake Park. There is no problem with watering the fish. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/13C02F11/00C02F11/14
CPCC02F11/00C02F11/14C04B33/131C04B33/1321Y02P40/60
Inventor 李传胜
Owner 南京胜仁市政建设有限公司
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