KR100956626B1 - Crash facility for recycling construction waste and dredged soil, essence sludge, waste sand - Google Patents

Abstract

The present invention relates to the construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facilities, and to produce the recycled aggregate by crushing the construction waste generated by the demolition of the construction site, dredging from the bottom of the river High quality sand can be selected from dredged soil.
The construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facility according to the present invention, the first hopper 10 to which the construction waste is injected, the jaw crusher 11 to crush the construction waste injected into the first hopper ), A waste conveying means for conveying the construction waste crushed by the jaw crusher, a magnetic sorter 13 for sorting iron lumps while being transported by the waste conveying means, and two sorting plates provided with sorting holes of different sizes. The shower vibration screen comprises a shower to sprinkle water and is made by stacking the construction waste passed through the magnetic separator, the particle size of the aggregate selected from the aggregate screened by the shower vibration screen 40, A first cone crusher 14 that is crushed and supplied to the shower vibrating screen, and a second cone that crushes the aggregate of medium particle size selected by the shower vibrating screen. Construction waste processing unit to produce recycled aggregate as construction waste and including a shutter (15) and the first impact crusher (16);
The second hopper 20 into which the circulating aggregate processed through the pretreatment process is put, and the two sorting plates provided with the sorting holes of different sizes are stacked, and the circulating aggregate put into the second hopper and the construction waste treatment part The second vibration screen 21 that receives aggregates passed through the impact crusher and sorts the aggregates having the largest particle size selected through the second vibration screens, and then supplies the aggregates to the second vibration screens. Dewatering screen for dewatering the sand out of the sand and sludge selected through the two impact crusher 22, the classifier 50 receives the aggregate of the smallest particle size selected through the second vibration screen, the classifier 50 , Circulating aggregate treatment including a sedimentation tank (60) for receiving the sludge and water to agglomerate and flocculate through a flocculant, and a dehydrator (70) for dewatering the sludge precipitated in the sedimentation tank to make a cake. Unit;
A transfer for supplying construction waste passed through the third hopper 30 into which dredged soil is input, dredged soil introduced into the third hopper or the first vibration screen 12 of the construction waste treatment unit, to the shower type vibration screen of the construction waste treatment unit. Means, the circulating aggregate processing unit including a sand conveying means for transporting along the conveying means and the sand sludge-washed through the shower-type vibration screen to the classifier, but with a waste conveying means of the construction waste treatment part It consists of a dredged soil treatment unit for treating together with the circulation aggregate treated by dredged soil.

Description

CRASH FACILITY FOR RECYCLING CONSTRUCTION WASTE AND DREDGED SOIL, ESSENCE SLUDGE, WASTE SAND}

The present invention relates to construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facilities, more specifically, construction waste generated by the demolition of the construction site, and dredged soil dredged from the river floor, various treatment plants The present invention relates to a construction waste capable of sorting and sorting wastewater (including other inorganic sludges), waste soil, and to sort out high-quality sand, and to crushing and sorting treatment facilities of dredged soil, purified sludge, and waste soil.

In recent years, dredging of sediment on rivers has been planned and implemented in order to protect the water quality of rivers and water supplies. As a measure to identify the causes of floods occurring in river estuaries, solutions have been proposed through dredging of sediment of river sediments. In addition, in addition to these basins, most of the rivers in Korea have problems due to sedimentary sediment, so a solution for sedimentary sediment dredging is widely required.

Dredged soils, on the other hand, consist of aggregate components and soil components containing a large amount of contaminants. However, in the construction site of Korea, the aggregate component is insufficient, so in the situation of using salty sea salt, if the aggregate component of the dredged soil in the riverbed is separated and used as aggregate, the national level can be obtained. The effect is very large.

In addition, the pollutant content of river sediment is increasing day by day due to factory wastewater and livestock waste water flowing upstream and streams in the river basin, and the pollution of rivers is getting worse day by day. There is an urgent need to improve water pollution through water. Therefore, although dredging projects for river sediments are expected to be carried out continuously in order to improve the water environment and create a hydrophilic environment in the future, these sedimentary soils are reclaimed without reprocessing or recycling after dredging. There is a problem of the disposal of resources.

Therefore, the recycling system for dredged sediment is continuously being studied, and the recycling system for dredging technology and sedimentary dredged soil is continuously studied as the proportion of total pollution level in rivers, lakes and coastal sediments is increased. Is being developed. In particular, the United States and Europe are aware of the risks of contaminated sediments and are developing or treating post-treatment systems.

When looking at the domestic situation, the level of dredging equipment and dredging technology is inferior to that of foreign technology.However, when looking at the level of technology for the treatment of contaminated sediments, it is currently recognized as a patent or new technology in Korea. There are only coagulation sedimentation techniques using polymer flocculant and the method of reclamation after dehydration by filtration of dredged soil. As a result of this problem, the landfill abuse and the characteristics of the pollutants may cause problems in which aggregation cannot effectively occur. Therefore, alternative technology development is urgently needed.
As well as construction waste and dredged soil, purified sludge, other inorganic sludge, and waste soil also contain sand that can be recycled, but most of them are landfilled and disposed of due to the lack of technology to recover the sand.

The present invention is to solve the problems described above, to produce a recycled aggregate by crushing the construction waste generated by the demolition of the construction site, and from the dredged soil, purified water sludge, waste soil sand dredged from the bottom of the river The purpose is to provide construction waste and sand crushing and sorting treatment facilities for dredged soil, purified sludge and waste soil.

The construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facility according to the present invention for achieving the above object, the construction waste treatment unit for producing a construction waste that does not go through a pretreatment process as a circulating aggregate; A circulating aggregate processing unit for processing circulating aggregate processed through a pretreatment process; It is characterized by consisting of a dredged soil treatment unit to selectively operate with the construction waste treatment unit and to operate together with the circulation aggregate treatment unit to produce sand from dredged soil.

According to the construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facility according to the present invention, to produce high-quality recycled aggregate through the construction waste treatment unit and recycled aggregate treatment unit, and at the same time dredged soil, purified sludge ( Other inorganic sludge), sand from waste soil can be increased to increase the production of recycled aggregates.

In addition, the construction waste treatment unit, recycled aggregate treatment unit, and dredged soil treatment unit can be selectively operated according to the type of construction waste and dredged soil, and always operate the recycled aggregate treatment unit to increase the yield of recycled aggregate per unit time, and also obtain sand from dredged soil. Therefore, it can generate high profits from the utilization of waste resources and can save enormous costs due to reckless landfilling of dredged soil.

1 is a schematic view of the construction waste and dredged soil, purified sludge, waste crushing and sorting treatment facility according to the present invention.
Figure 2 is a configuration of the third hopper applied to the construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facilities according to the present invention.
Figure 3 is an excerpt of the main portion of the classifier applied to the construction waste and dredged soil, purified water sludge, waste soil crushing and screening treatment facilities according to the present invention.

As shown in Figure 1, the construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facility according to the present invention, construction waste (recycling process is not referred to, hereinafter referred to as 'waste') and recycled aggregates (A high-quality recycled aggregate that has undergone a circulation process, abbreviated as 'aggregate' hereafter), and dredged soil, purified sludge, and waste soil (hereinafter referred to as dredged soil as an example) can be simultaneously recycled. The first and second hoppers 10 and 20 and the third hopper 30 into which dredged soil is introduced are provided.

Waste is sorted into aggregates of two particle sizes through the first hopper (10)-jaw crusher (11)-the first vibration screen (12)-the first magnetic separator (13)-the shower type vibration screen (40) Aggregate with a larger particle size among the aggregates selected by the vibrating vibration screen 40 is crushed through the first compactor 14 and then supplied to the shower type vibration screen 40 again, and the aggregate having a small particle size is the second cone. Crusher 15-After passing through the first impact crusher 16 is supplied to the second vibration screen 21 to be described later. Aggregate injected into the second vibrating screen 21 is processed together with the aggregate injected into the second hopper 20 and specific details will be described below. That is, since the waste is not subjected to a separate circulating process, the waste is subjected to more processing processes (the second compactor 15, the first impact crusher 16) than the aggregate.

Shower vibrating screen 40 is to wash the waste water through the shower 42, and to sort the particle size through the sorting hole, two stages of two sorting plates are provided with different diameter sorting holes It may be a structure. Aggregate of large particle size is left in the sorting plate of the upper stage and supplied to the first compactor 14, and aggregate of medium particle size is sorted and supplied to the second compactor 15 in the sorting plate of the lower stage, The foreign matter and water that passed through the sorting hole of the sorting plate are supplied to the settling tank.

Aggregate is input through the second hopper 20 and is screened into aggregates of three particle sizes via the second vibration screen 21. The aggregate of the largest particle size is re-crushed through the second impact crusher 22 and then supplied to the second vibration screen 21 again, and the aggregate of the medium particle size is discharged and loaded for use as a product, and the aggregate of the smallest particle size. Is supplied to the classifier 50.

Aggregate injected into the classifier 50 may be treated with dredged soil introduced through the third hopper (30).

Dredged soil is introduced into the third hopper 30, the washing and sludge is first sorted through the shower-type vibrating screen (40). The shower type vibration screen 40 was referred to as a two-stage structure, and may be sorted by sand and sludge through the sorting plate of the lower stage.

The sand of dredged soil is not sludged but undergoes crushing, so it can be commercialized, so it is transferred from the shower type vibration screen 40 to the classifier 50 and classified with aggregates selected through the second vibration screen 21. , Sludge and water is transferred to the settling tank (60). The sand from which some sludge is washed through the shower vibrating screen 40 is supplied to the classifier 50 through a conveying means, for example, a sand conveying conveyor 41. The sand conveying conveyor 41 is controlled on and off so as to operate only during the treatment of the dredged soil.

That is, the dredged soil is separate from only the third hopper 30, the shower type vibration screen 40 is shared with the waste treatment line, and the classifier 50 is shared with the aggregate treatment line, and the dredged soil treatment line and the waste treatment line are Either can be selectively operated.

As shown in Figures 1 and 3, the classifier 50 is a tubular structure, the classification screw 51 is rotatably mounted therein, and is connected to the settling tank 60 through the recovery duct 52 to supply sludge and water. Transfer to the settling tank 60 and can be transported through the transfer pipe and the like.

The sand sorted by the classifier 50 is loaded after being dehydrated through a dewatering screen (not shown).

In the settling tank 60, the stirring blade 61 rotates at a low speed so that the sludge is uniformly precipitated, and a flocculant feeder 62 is installed to coagulate the sludge. The coagulant feeder 62 supplies a fixed amount of a coagulant (a commercially available coagulant), and can supply a fixed amount periodically, or can be supplied by a manager's manual work.

As shown in FIG. 2, the third hopper 30 may be, for example, a concrete structure in which the inlet 31 and the outlet 32 are formed, and are not used at the time of regeneration of waste, thereby opening and closing the outlet 32. The door 33 is provided.

The door 33 can be any structure for opening and closing the outlet 32, for example, one side is connected through the hinge can open and close the outlet 32 by rotating the free end of the other side, the opening and closing method is automatic (motor, etc.) ) And manual.

The third hopper 30 is used for the treatment of dredged soil, and dredged soil has a high water content. Therefore, the bottom of the third hopper 30 may be provided with a dewatering screen 34 for dewatering the dredged soil to be introduced and the sump 35 for collecting the dewatered water through the dewatering screen (34). The dewatering screen 34 is vibrated by the vibration motor to increase the dehydration rate of the dredged soil.

The third hopper 30 is installed to supply the dredged soil to the shower-type vibrating screen 40 through the dredged soil and the waste conveying conveyor 36. The dredged soil and waste conveying conveyor 36 always operates regardless of the type of waste and dredged soil, and the waste conveying conveyor 17 which supplies the waste to the dredged soil and the waste conveying conveyor 36 does not operate when the dredged soil is processed. Operate only during processing.

The present invention can be configured to automatically stop the dredging line while the waste is being processed, ie, the sensor detects the drive of the waste conveying conveyor 17 and the controller controls the door 33 when the waste conveying conveyor 17 is driven. In addition to closing the outlet 32 of the third hopper (30) through the control to stop the operation of the dehydration screen (34).

In addition, the controller informs that the dredged soil line is stopped through a warning lamp installed in the third hopper 30.

On the contrary, when the dehydration screen 34 of the third hopper 30 is in operation, the controller not only operates the waste conveying conveyor 17 but also activates and warns a warning lamp installed in the first hopper 10. .

The operation of the construction waste and dredged soil, purified sludge, waste soil crushing and screening treatment facilities according to the present invention are as follows.

Dredged soil

When processing dredged soil (drilled soil is a mixture of sand, sludge and water), the door 33 is opened to open the outlet 32, the sand conveying conveyor 41 is operated, and the waste conveying conveyor 17 is stopped. Let's do it.

Dredged soil is introduced into the inlet 31 of the third hopper 30 using a fork lane or the like.

The dewatering screen 34 dewaters the dredged soil introduced into the third hopper 30 while vibrating by the vibration motor, and the dewatered water is collected in the sump 35 of the bottom of the dewatering screen 34 (or the sump 35). After the water is collected in the sedimentation tank (60)) and dredged soil, which is partially dewatered, is fed to the conveyor.

Dredged soil and dredged soil transported along the waste conveying conveyor 36 are supplied to the shower type vibration screen 40.

Shower type vibration screen 40 is to remove the sludge from the sand in the dredged soil, it is separated into sand, sludge and water by water sprayed at high pressure. Here, the dredged soil passes through the screening hole of the sorting plate of the upper stage of the shower-type vibrating screen 40 of the two-stage structure and falls to the sorting plate of the lower stage, where sludge and water having a small particle size are sorting holes of the sorting plate of the lower stage. After passing through the sand, the sand remains on the bottom of the sorting plate.

Sludge and water are introduced into the settling tank 60 and sand is introduced into the classifier 50 through the sand transfer conveyor 41.

The sand introduced into the classifier 50 includes some sludge, and the sand and sludge are added to the washing water of the classifier 50.

Sand and sludge differ in weight, heavy sand sinks to the bottom of the classifier 50 and light sludge floats in the wash water.

The supernatant and sludge of the wash water are recovered to the recovery duct 52 through the overflow passage 54 of the classifier 50. At this time, if a blower is provided on the opposite side of the recovery duct 52, the sludge is rapidly recovered by the blower.

Sludge and water recovered in the recovery duct 52 is introduced into the settling tank (60).

The sludge introduced into the settling tank 60 is aggregated through the flocculant in the settling tank 60 to sink to the bottom of the settling tank 60, and is pumped from the bottom of the settling tank 60 by a pump and supplied to the dehydrator 70. The dehydrator 70 may be used in various ways such as a press filter.

The sludge is dehydrated by the dehydrator 70 to produce a cake.

On the other hand, the sand sank in the bottom of the classifier 50 is pumped by the pump is supplied to the dewatering screen is dewatered and then loaded.

The second and third hoppers 20 and 30 may be supplied with aggregate and dredged soil at the same time, and the aggregate is sorted through the second hopper 20 and the second vibration screen 21 and then put into the classifier 50. Therefore, the classifier 50 classifies the treated aggregate and sand after being introduced into the second and third hoppers 20 and 30, respectively.

On the other hand, in the case of treating waste without treating dredged soil, the outlet 32 is closed through the door 33 of the third hopper 30, and the waste conveying conveyor 17 is operated. At this time, the aggregate processing line starting with the second hopper 20 operates normally.

Accordingly, the waste treatment line and the aggregate treatment line including the first and second hoppers 10 and 20 may be simultaneously operated to treat the waste and the aggregate.

On the other hand, if the door 33 of the third hopper 30 is open while the waste is processed and the waste is being conveyed through the waste conveying conveyor 17, the controller forcibly closes the door 33 and the dewatering screen 34 In addition, a warning light is activated to indicate that the waste disposal line has been activated and the dredged soil treatment line has been stopped.

10,20,30: first to third hoppers,
31: inlet, 32: outlet
33: door, 34: dewatering screen
35: sump, 36: dredged soil and conveying conveyor
40: vibrating shower screen, 41: sand conveying conveyor
50: classifier, 51: classification screw
52: recovery duct,
60: sedimentation tank, 70: dehydrator

Claims (4)

A first hopper 10 into which construction waste is introduced, a jaw crusher 11 to crush construction waste introduced into the first hopper, a waste conveying means for transferring the construction waste crushed by the jaw crusher, and the waste conveying means A magnetic sorter 13 for sorting iron lumps while being transported by the water, and two sorting plates provided with sorting holes of different sizes are stacked to include water showers, and a construction waste having passed through the magnetic sorter. Shower type vibration screen 40 to sort by the particle size, the first compactor 14 for crushing the aggregate of a large particle size among the aggregates selected by the shower type vibration screen to supply to the shower type vibration screen, the shower vibration Construction waste to produce construction waste as recycled aggregate, including a second impact crusher 15 and a first impact crusher 16 for crushing the aggregate of the medium particle size selected by the screen Water and processing;
The second hopper 20 into which the circulating aggregate processed through the pretreatment process is put, and the two sorting plates provided with the sorting holes of different sizes are stacked, and the circulating aggregate put into the second hopper and the construction waste treatment part The second vibration screen 21 that receives aggregates passed through the impact crusher and sorts the aggregates having the largest particle size selected through the second vibration screens, and then supplies the aggregates to the second vibration screens. Dewatering screen for dewatering the sand out of the sand and sludge selected through the two impact crusher 22, the classifier 50 receives the aggregate of the smallest particle size selected through the second vibration screen, the classifier 50 , Circulating aggregate treatment including a sedimentation tank (60) for receiving the sludge and water to agglomerate and flocculate through a flocculant, and a dehydrator (70) for dewatering the sludge precipitated in the sedimentation tank to make a cake. Unit;
A transfer for supplying construction waste passed through the third hopper 30 into which dredged soil is input, dredged soil introduced into the third hopper or the first vibration screen 12 of the construction waste treatment unit, to the shower type vibration screen of the construction waste treatment unit. Means, the circulating aggregate processing unit including a sand conveying means for transporting along the conveying means and the sand sludge-washed through the shower-type vibration screen to the classifier, but with a waste conveying means of the construction waste treatment part Construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facility, characterized in that consisting of the dredged soil treatment unit for treating together with the aggregate aggregate treated by dredged soil. According to claim 1, The dredged soil processing unit, the door 33 for opening and closing the outlet of the third hopper, a dewatering screen 34 installed in the third hopper to dehydrate the dredged soil, dewatered through the dewatering screen Construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facility, characterized in that it comprises a sump (35) for collecting water. The method of claim 2, comprising a sensor for detecting the drive of the waste transport means, the warning lamp installed in the third hopper, the controller is the third hopper through the door 33 when the drive of the waste transport means is detected The construction waste and dredged soil, purified water sludge, waste soil crushing and sorting treatment facility, characterized in that forcibly closing the outlet of the stop and stop the dewatering screen, the warning light to operate. The method of claim 3, wherein the controller is configured to prevent the waste transport means from operating when the dehydration screen 34 of the third hopper 30 is in operation, and to activate and warn a warning lamp installed in the first hopper. Construction waste and dredged soil, purified sludge, waste crushing and sorting treatment facility, characterized in that.

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