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Regeneration function of permeable brick in sponge city

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更新时间:2019年03月30日03:03:28 打印此页 关闭 Clicks: 510 Updated: March 30, 2019 03:03:28 Print this page Close

In recent years, the world has paid more and more attention to the topic of "sustainable development". This makes the issue of heavy pollution of large amounts of fresh water resources unavailable due to arbitrary discharge of agricultural, industrial, and daily discards. As far as big cities are concerned, because the ground is mainly made of cement or asphalt, then the urban heat island effect has become more prominent in recent years. In addition, the problem of subsidence on the ground caused by the surface being blocked from contact with moisture for a long period of time is very detrimental to the surface water cycle.

The new type of data permeable bricks can effectively alleviate and change the current situation. It is made of discarded materials and is tiled on urban roads in a large area. Give timely compensation. In addition, after the rainwater passes through the multi-layer filtration of the permeable bricks and the surface layer, its pollution degree will be greatly reduced, and the remaining pollution components can basically be degraded by natural microorganisms.

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Permeable brick and its application today

1.1 Classification of permeable bricks

Permeable bricks can be divided into two categories: sintered permeable bricks and non-sintered permeable bricks. Among them, sintered permeable bricks are mainly industrial, construction, and daily waste materials, which are crushed, shaped, and fired at high temperatures. Functional construction and decoration materials; the other type mainly uses inorganic non-metals as the main materials, and is formed by environmental protection processes such as adhesive bonding, mold reinforcement, and exposure. Because no sintering is required, it is solidly called non-sintered permeable brick.

In addition, permeable bricks can be classified according to their functions and application functions. They can be divided into permeable bricks that are permeable to the brick itself and permeable bricks that are impermeable to the brick itself or can only penetrate or are weakly permeable.

1.2 The environmental protection of permeable bricks

The permeable brick is mainly a secondary application of tailings waste, fly ash, construction waste, etc., and is a real green product. The amount of waste that occurs in China's construction each year is astonishing, about 1.55 billion to 2.4 billion tons, and the amount is increasing year by year; however, in the booming countries, the utilization rate of construction waste resources can reach 90% on average. The utilization rate of construction waste resources is less than 5%.

[2] By promoting the use of permeable bricks, valuable resources such as construction waste can be effectively used. Not only can it solve many problems now brought to people, but it can also reduce the negative impact on the ecological environment caused by quarrying. Wait. The use of permeable bricks can also achieve the goals of energy saving and emission reduction, and resource recycling. Therefore, it is very urgent and necessary to recover and reuse construction waste and to produce permeable bricks from construction waste.

1.3 Current Status of Permeable Bricks at Home and Abroad

In response to the negative impact of urban impermeable grounds on groundwater resources, Germany has proposed a "rainstorm scheme". The plan is to change most of the city's ground to permeable ground. It is mainly aimed at newly built communities, where rainwater use projects should be planned for both industrial, commercial and residential areas. If there is no rainwater use method, the government will collect rainwater drainage equipment fees and rainwater discharge fees.

Xi'an, a famous city in China, is also one of the cities where permeable bricks are widely used in China. The goal of Xi'an and many cities at that time was to be able to form itself into a "sponge city", and to change the city into a "sponge city", the permeable bricks played the role of "lung" in this process.

2

How did permeable bricks alleviate the damage to water resources and the ecological environment at that time?

2.1 Urban runoff water pollution

In recent years, the pollution of urban public roads has become more and more serious, especially oil pollution from motor vehicles, heavy metal pollution, and organic pollutants. Under the washout of rainwater, these pollutants are washed into the sewer, and then flow into rivers and lakes. The sewage treatment required is very expensive and the treatment costs are extremely expensive.

2.2 Reduce pressure on urban drainage systems

At present, there are various problems with the sewage pipes laid in urban construction. Some areas have poor drainage and water accumulation, which brings great inconvenience to people's lives. Due to material damage and functional decline of sewer pipes, various problems such as urban drainage and flood prevention can no longer be solved. Whenever there is a heavy rainstorm, the rainwater runoff far exceeds the capacity of the urban sewer network planning. Therefore, "seeing the sea" in major cities is by no means a nightmare, mainly due to various tragedies caused by the serious failure of urban drainage systems to satisfy the discharge of rainwater.

2.3 The conditioning ability of permeable bricks to the ecosystem

Permeable brick is a new type of environmental protection building material product born to protect the urban ecological balance. Its main purpose is to solve many problems that occur in urban surface hardening, and to create a high-quality natural day environment.

The characteristics of permeable bricks are:

First, it has very outstanding water permeability and ventilation functions. Rainwater quickly enters the ground through permeable bricks, which can make up for soil water and groundwater in time;

Second, the permeable bricks have a greater effect on conditioning the temperature and humidity of part of the surface space and mitigating the urban heat island effect;

Third, rainwater enters the ground through permeable bricks, which can greatly reduce the pressure of urban drainage and flood prevention. Together, it can serve as a filtering device to further reduce water pollution;

Fourth, after the use of permeable bricks, there will be no stagnant water on urban roads after rain, which will facilitate travel, and then improve the quality of our lives;

Of course, the mentioned is only a small part of the advantages brought by permeable bricks, which will have far-reaching and irreplaceable effects on future urban construction and improvement of residents' days.

3How permeable bricks can alleviate the damage of water resources and ecological environment at that time

As a new type of green environmental protection materials presented at the time, permeable bricks can greatly alleviate the problem of urban surface hardening, maintain the city's ecological environment, and create a high-quality natural and daily environment.

In addition, it also has the characteristics of moisturizing, high strength, can absorb and reduce noise, useful anti-slip and cold resistance. Its main raw materials can be slag waste or discarded ceramics. of:

It can make the rain water quickly penetrate the ground, make up the water and groundwater in the soil, improve the living conditions of plants in cities, and enrich the microorganisms in the soil;

It can regulate the urban microclimate, greatly alleviate the city's heat island effect, and alleviate the flood prevention and drainage pressures of cities, reduce road stagnant water, and reduce water pollution in public waters;

Convenient for urban residents to go out, the permeable brick exterior bumps can prevent road reflections and absorb the noise of walking vehicles to improve travel comfort, and its colors and specifications are diverse, simple and natural, and very economical.

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