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Method for preparing artificial wetland matrix material by using powdered waste red brick block

A technology for artificial wetlands and matrix materials, which is applied in the fields of construction waste recycling, recycling technology, chemical instruments and methods, etc., can solve the problems of excessive total phosphorus in effluent, blockage of wetland matrix, and inability to provide them, and achieves increased nutrient content and is operable. Strong and simple effect

Inactive Publication Date: 2014-08-13
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still some problems in the operation of wetland matrix: (1) wetland matrix is ​​easy to cause blockage during the operation of constructed wetland, making the constructed wetland unable to operate normally; (2) wetland matrix has poor adsorption effect on nitrogen and phosphorus in water , resulting in excessive total phosphorus in the effluent; (3) The wetland substrate cannot provide sufficient micronutrients and root extension carriers, making perennial woody wetland plants grow slowly

Method used

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  • Method for preparing artificial wetland matrix material by using powdered waste red brick block

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preparation example Construction

[0021] The preparation method of artificial wetland substrate of the present invention comprises the following steps:

[0022] A certain quality of construction waste waste red brick blocks is sent to the impact crusher 2 through the belt conveyor 1 for crushing; then, the crushed components are sent to the coarse powder mill 4 through the belt conveyor 3 for crushing, The pulverized product is the constructed wetland matrix prepared in the present invention.

[0023] The characteristics of the discarded red brick blocks used in the present invention are: the maximum diameter is no more than 250mm, is a kind of construction waste, and is mainly composed of red bricks.

[0024] The main parameters of belt conveyor 1 and belt conveyor 3 adopted in the present invention are: belt width 400mm, conveying length 12-20m, power 2.2-4kW, conveying speed 1.25-2.0m / s, conveying capacity 5-15t / h .

[0025] The main parameters of the impact crusher 2 used in the present invention are: sp...

Embodiment 1

[0029] 10t of waste red brick blocks from construction waste are sent to the impact crusher 2 through the belt conveyor 1 for crushing; then, the crushed components are sent to the coarse powder mill 4 through the belt conveyor 3 for crushing. The product is the constructed wetland matrix prepared in the present invention.

[0030] The characteristics of the discarded red brick blocks used in the present invention are: the maximum diameter is not more than 250 mm, it is a kind of construction waste, and its mass is 10 tons.

[0031] The main parameters of belt conveyor 1 and belt conveyor 3 adopted in the present invention are: belt width 400mm, conveying length 12-20m, power 2.2-4kW, conveying speed 1.25-2.0m / s, conveying capacity 5-15t / h .

[0032] The main parameters of the impact crusher 2 used in the present invention are: specification Φ1000mm×700mm, feed inlet size 400mm×730mm, maximum feed size 250mm, processing capacity 10-20t / h, electrode power 10-20kW.

[0033] Th...

Embodiment 2

[0036] Send 15t of waste red brick blocks from construction waste to the impact crusher 2 through the belt conveyor 1 for crushing; then, send the crushed components to the coarse powder mill 4 through the belt conveyor 3 for crushing, after crushing The product is the constructed wetland matrix prepared in the present invention.

[0037] The characteristics of the discarded red brick blocks used in the present invention are: the maximum diameter is not more than 250 mm, it is a kind of construction waste, and its mass is 10 tons.

[0038] The main parameters of belt conveyor 1 and belt conveyor 3 adopted in the present invention are: belt width 400mm, conveying length 12-20m, power 2.2-4kW, conveying speed 1.25-2.0m / s, conveying capacity 5-15t / h .

[0039] The main parameters of the impact crusher 2 used in the present invention are: specification Φ1000mm×700mm, feed inlet size 400mm×730mm, maximum feed size 250mm, processing capacity 10-20t / h, electrode power 10-20kW.

[0...

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Abstract

The invention discloses a method for preparing an artificial wetland matrix material by using powdered waste red brick block, and belongs to the technical field of wastewater treatment. The invention mainly solves the problem of disposal of construction waste of waste red brick block; and the waste red brick block is subjected to crushing and grinding to obtain a powdered waste red brick block, which is prepared into an artificial wetland matrix material. The artificial wetland matrix material prepared by the invention has high specific surface area and porosity, is not easily blocked, and can filter and adsorb pollutants in water; and Al<3+>, Ca<2+>, Fe<3+>, Mg<2+> contained in the matrix material can generate a precipitation reaction with phosphorus in water, and are conducive to the removal of phosphorus in wastewater, and trace elements are conducive to the growth of wetland plants. Therefore, the artificial wetland matrix material prepared by the invention can changes the powdered waste redbrick block into treasure, and efficiently utilize resources.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and in particular relates to a method for preparing artificial wetland matrix materials by using powdery waste red brick blocks. Background technique [0002] Most of the brick houses in my country in the 1960s and 1970s or even earlier used red bricks as the main building wall material. Red bricks are made of sintered clay, shale, and coal gangue, and contain elements such as Al, Si, Ca, Fe, and Mg. With the development of urbanization, a large amount of abandoned red brick block construction waste is produced in the process of urban house demolition. The disposal of these abandoned red brick block construction waste has become an urgent problem for urban construction units. At present, most of the discarded red brick block construction waste is recycled, and most of it is backfilled as construction waste, which not only occupies land, but also pollutes the environment. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C02F3/32
CPCY02W30/58
Inventor 张文艺冯国勇胡林潮刘芳李文昱周新程
Owner CHANGZHOU UNIV
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