Sludge environmental protection block

Abstract

The invention discloses a sludge environmental protection block and relates to a building block. Present blocks are clay or cement and bath brick. Chamotte brick needs a lot of clay. A lot of fine fields will be destroyed, cement-bath brick will destroy massif and river, and disasters are brought to humans. Therefore, both clay and sand should not be used as a brick-making material. Furtherly, a lot of sludge left after sewage treatment is not effectively utilized. The invention provides the environmental protection block with sludge used as a raw material. The formula of the environmental protection block contains: by weight, 18-25 parts of portland cement, 0.5-1.5 parts of expanded perlite, 25-35 parts of sludge, 8-12 parts of pulverized limestone, 30-40 parts of small broken stone, 5-12 parts of building garbage, 0.5-1 part of foamed plastic fragments and 1-3 parts of industrial fiber. The invention relates to the green industry for environmental protection, and has beneficial effects of excellent product performance, multi-purposes, simple manufacturing industry, energy conservation, low cost and the like.

Description

field of invention [0001] The invention relates to the field of building materials, especially building blocks. Background technique [0002] Since the 21st century, our country has entered a stage of large-scale capital construction, and various buildings have sprung up like mushrooms after a spring rain. The more buildings there are, the more building materials are consumed, especially various blocks and bricks. It is the main material of buildings. For traditional clay bricks, it consumes a lot of high-quality soil and destroys a lot of arable land, which greatly affects agricultural production, greatly reduces food production, and directly affects my country's food security. In addition, for some improved bricks, a large amount of sand and stone are consumed, about 60% of the total amount is used to replace clay. As we all know, the two major sources of sand and stone are mountain digging and river digging. The result of mountain digging is not only It destroys gre...

AI Technical Summary

Problems solved by technology

Although sludge is a good agricultural fertilizer, the content of nitrogen, phosphorus and potassium in it is much higher than that of farm manure, but there are parasites, germs, etc. in sludge, and the problem of odor is particularly prominent. If sludge is used to fertilize fields and forests, farmers cannot Tolerate its smell, unwilling to accept

Moreover, agricultural production is seasonal, and sludge composting is significantly affected by seasons and sales radius. Even if there are no problems such as odor, agriculture and forestry cannot fully consume the sludge produced by cities.

So up to now, the sludge has not found a way out, and it is still in the status of waste. On March 28, 2011, the Science and Technology Daily published an article "Sewage Treatment, What to do with Sludge?", calling on all sectors of society to care The problem of sludge treatment, the problem before us is how to use sludge on environmentally friendly blocks