KR102584165B1 - Wastewater treatment apparatus for construction site - Google Patents

Abstract

The wastewater treatment device for construction sites of the present invention collects and agitates wastewater generated at construction sites and supplies it to the filtration and separation unit 100, and receives wastewater generated after filtration from the filtration and separation unit 100 to adjust acidity. The acidity is maintained below the appropriate level for discharging and supplying the neutralizing agent to the neutralizing unit. Foreign substances in the wastewater are filtered and collected between the filter cloths (110) located in the filter grooves (123) of the filter plate (120), and the filtered wastewater is routed through the drainage passage. After supplying the wastewater to the neutralization unit (130) through (122), if the level of contamination of the wastewater is severe, it is preferable to inject a neutralizing agent from the neutralizing agent supply unit (40), perform primary chemical treatment, stir sufficiently, and then purify and discharge. Depending on the degree of contamination, it can be recovered to the water collection unit 20 and reused. As the protruding frame 133 is protruded by the elastic piece 132 and pushes out the filter cloth 110, the filter cloth 110 and the filter cloth 110 ), the filtered sludge cake is guided to fall smoothly downward by its own weight, and the operation tool 141 is lowered to spray washing water, and at the same time, the surface of the filter cloth 110 in the elastically installed state is scraped using the scraper 142. This is to remove the sludge cake completely and quickly by scraping.

Description

Wastewater treatment apparatus for construction site}

The present invention relates to a wastewater treatment device for construction sites. Specifically, the present invention relates to a wastewater treatment device for construction sites. In detail, it treats residues and suspended solids of wastewater generated at construction sites, simultaneously handles agitation and neutralizing agents, etc., and at the same time has a filter plate capable of automatically and completely removing sludge cake. This relates to a wastewater treatment device for construction sites.

In general, wastewater and sludge generated from various construction sites are excavated in a separate location at the construction site and stored there for a certain period of time. When the amount exceeds a certain amount, it is moved to a purification facility installed in another area for purification or is removed from the construction site to a separate location. After installing a purification facility in the excavated space, it is purified directly at the construction site and reused as industrial water, or discharged into the river when the water supply exceeds a certain level.

However, among conventional water treatment methods, when wastewater to be purified is transported to a purification facility using transportation means and then purified at the purification facility, multiple collection vehicles are required to transport the wastewater and sludge to the location where the purification facility is installed. Since one transport vehicle must transport wastewater and sludge multiple times, it not only takes a lot of time to transport wastewater and sludge, but also causes significant loss in terms of cost as multiple vehicles must be operated or one vehicle must be operated over long distances. There was a problem that occurred.

In addition, the conventional water treatment method requires excavating one side of the construction site and then installing a purification facility to treat wastewater and sludge directly at the construction site. This requires a considerable amount of installation space to install the purification facility, making it difficult to utilize space at the construction site. Not only was the efficiency significantly lowered in the drawing, but the purification facility used had to be dismantled after the construction work was completed, resulting in a significant cost loss in installing or dismantling the purification facility.

Conventional technologies include Publication Patent No. 10-2012-0131324 (Title of the invention: Mobile water treatment device) and Patent Registration No. 10-0423485 (Title of the invention: Artificial stone wastewater treatment system) of the present applicant and Patent Registration No. 10- No. 1092156 (name of invention: filter plate transfer device of filter press), etc.

Therefore, the main purpose of the present invention is to provide a wastewater treatment device for construction sites that allows efficient treatment of residues and suspended solids in wastewater generated at construction sites, and at the same time allows the filter plate to automatically and quickly and completely remove sludge cake. There is something to do.

In order to achieve the above object, the wastewater treatment device for construction sites of the present invention collects and agitates wastewater generated at construction sites, supplies it to the filtration and separation unit, receives wastewater generated after filtration from the filtration and separation unit, and adjusts the acidity. In a wastewater treatment device for construction sites that drains water but maintains the acidity below the appropriate level for supplying a neutralizing agent to the neutralization unit, the filtration and detachment unit includes a filter cloth forming a moving passage, a filter plate coupled to the inside of the filter cloth but forming a filter groove, and It is characterized by being composed of a detachment elastic part installed on the filter plate that pushes the filter cloth outward to swell, a sludge removal unit that scrapes and removes the cake-like sludge filtered from the filter cloth, and a lifting and lowering unit that moves the sludge removal unit up and down. A wastewater treatment device for construction sites.

Therefore, the wastewater treatment device for construction sites collects and agitates wastewater generated at construction sites and supplies it to the filtration and separation unit. The wastewater generated after filtration is supplied to the filtration and separation unit, and the acidity is adjusted, drained, and neutralized. The acidity is maintained below the appropriate level for supplying the neutralizing agent to the filter, and foreign substances in the wastewater between the filter cloths are filtered and collected. The neutralizing agent is injected from the neutralizing agent supply unit and discharged after chemical treatment. The filter cloth is pushed by the elastic piece of the protruding frame. The sludge cake filtered between the filter cloths falls smoothly downward by its own weight, and the washing water is sprayed while lowering the operating tool between the filter cloths. At the same time, the surface of the elastically installed filter cloth is scraped with a scraper to remove wastewater residues. It has the effect of allowing the filter plate to automatically and quickly and completely remove sludge cake while efficiently processing suspended solids.

1 is an overall perspective view showing a wastewater treatment device for construction sites according to the present invention.
Figure 2 is a plan view schematically showing a wastewater treatment device for construction sites according to the present invention.
Figure 3 is an exploded perspective view showing the filtration and dehydration portion of the wastewater treatment device for construction sites according to the present invention.
Figure 4 is an exploded cross-sectional view showing the filtration and dewatering portion of the wastewater treatment device for construction sites according to the present invention.
Figure 5 is a bottom view showing the sludge caker removal portion of the wastewater treatment device for construction sites according to the present invention.
Figure 6 is a front view showing the sludge caker removal portion of the wastewater treatment device for construction sites according to the present invention.
Figure 7 is a cross-sectional view showing the state before operation of the filtration and dewatering unit of the wastewater treatment device for construction sites according to the present invention.
Figure 8 is a cross-sectional view showing the pressurized state of the filtration and dewatering unit of the wastewater treatment device for construction sites according to the present invention.
Figure 9 is a cross-sectional view showing the filtration state of the filtration and dehydration unit of the wastewater treatment device for construction sites according to the present invention.
Figure 10 is a cross-sectional view showing the separated state of the filtration and dehydration parts of the wastewater treatment device for construction sites according to the present invention.
Figure 11 is a cross-sectional view showing a state in which sludge cake is removed from the filtration and dewatering unit of the wastewater treatment device for construction sites according to the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the attached drawings.

As shown in Figures 1 to 11, the wastewater treatment device for construction sites (1) of the present invention collects wastewater generated at construction sites, stirs it evenly, and supplies it to the filtration and separation unit (100) (20). ) and a neutralization unit 30 that receives the wastewater generated after filtration in the filtration and separation unit 100 and drains it by adjusting the acidity, and supplies a neutralizing agent to the neutralization unit 30 to lower the acidity to below the appropriate acidity. In the wastewater treatment device (1) for construction sites, which consists of a neutralizing agent supply unit (40) to maintain the filtration and separation unit (100) and a driving unit (10) that controls the device while pressurizing the filtration and separation unit (100), the filtration and separation unit (100) 100) includes a filter cloth 110 forming a moving passage 111, a filter plate 120 coupled to the inside of the filter cloth 110 but forming a filter groove 123, and a filter cloth installed on the filter plate 120. A release elastic part 130 that is elastically installed to push the 110 outward, a sludge removal part 140 that scrapes and removes cake-like sludge filtered by the filter cloth 110, and the sludge removal part 140. It consists of a raising and lowering unit 150 that moves up and down.

The present invention collects various wastewater generated at construction sites, etc. into the water collection unit 20, stirs it, and supplies it to the filtration and separation unit 100. The wastewater supplied from the filtration and separation unit 100 is filtered and contained in the wastewater. Separate the sludge.

Here, the separated cake is automatically discharged to the outside through a chute, etc., and the filtered wastewater is discharged to the neutralization unit (30).

In particular, it is desirable to suppress environmental pollution caused by wastewater at construction sites by supplying a neutralizing agent to the filtered wastewater flowing into the neutralization unit 30 to adjust the appropriate acidity so that it can be discharged to the outside or reused.

The filter cloth 110 is formed of a rectangular non-woven fabric, etc., and is folded in half in the center. In the folded state, the filter cloth 110 covers the filter plate 120, which will be described later, and at the same time, the tubular-shaped movement passage 111 penetrates the movement passage 121. ) to form.

The filter plate 120 is formed of a plate having an appropriate thickness, with filtering grooves 123 formed on corresponding surfaces, and holes are drilled horizontally in the filtering grooves 123 to form a moving passage 121. ) A drainage passage 122 is formed downward in the center to discharge the filtered wastewater to the outside to the neutralization unit 30.

In addition, it is desirable to form an uneven surface 124 such as embossing on the bottom surface of the filtration groove 123 of the filter plate 120 to facilitate smooth and efficient filtration of wastewater.

The release elastic part 130 is fixed by combining a square-shaped support frame 131 inside the filter groove 123 of the filter plate 120, and the protruding frame 123 is connected to the support frame 131 with an elastic piece 132. Since it is formed by connecting, the protruding frame 133 is protruded outward in a free state of the elastic piece 132 and the filter cloth 110 is pushed outward to inflate.

Moreover, the protruding frame 133 is formed in a continuous wave shape from the upper side to the lower side, so that the scraper 142 of the sludge removal unit 140, which will be described later, moves and more efficiently removes the sludge in the cake state by using the impact energy of the force and vibration. Ideally, it can be removed.

The sludge removal unit 140 is provided with a filter cloth 110 and an operating tool 141 formed of a tube that moves vertically between the filter cloth 110, and has elastic scrapers on both sides of the operating tool 141 ( 142) is protruded and at the same time, a plurality of washing water nozzles 143 are formed downward.

Here, the supply hose 145 for supplying washing water is connected to the tubular-shaped operating port 141 to smoothly and sufficiently supply washing water to the washing water nozzle 143, and at the same time, guide blocks 144 are raised and lowered at both ends. ), but drill a screw hole perpendicular to the guide block (144).

The elevating and lowering unit 150 is formed by standing a pair of guide frames 151 facing each other on the movement line of the filter plate 120, and forming a vertical bolt 152 inside the guide frame 151, and forming a vertical bolt 152 thereon. The guide block 144 of the sludge removal unit 140 is passed through and screwed to (152).

In addition, a rotating gear 153 is formed on the upper side of the computerized bolt 152, and the rotating gears 153 are connected to the timing belt 154 so that they are interlocked so that they can rotate in the same direction and can be connected to any one computerized bolt ( 152) Connect the drive motor 155 to the upper side.

The operation of the present invention is explained as follows.

First, the drive control unit 50 is controlled to transfer the wastewater from the construction site to the water collection unit 20, stir it evenly, and supply it to the filtration and separation unit 100 in which a plurality of filter plates 120 are in close contact with each other. 120), foreign substances in the wastewater are filtered and collected between the filter cloths 110 located in the filter grooves 123 of the filter plate 120 while moving through the moving passage 111 of the filter cloth 110 covering the filter cloth 110, and at the same time, the filtered wastewater is After supplying the wastewater to the neutralization unit 130 through the drainage passage 122, if the level of contamination of the wastewater is severe, a neutralizing agent is introduced from the neutralizing agent supply unit 40, and after primary chemical treatment, it is sufficiently stirred, purified, and discharged. It is preferable and, depending on the degree of contamination, it can be recovered to the water collection unit 20 and reused.

In particular, when the adhesion state of the filter plate 120 is released after filtering wastewater generated at a construction site, the protruding frame 133 forming the curved surface 134 of the release elastic portion 130 is protruded by the elastic piece 132. By pushing the filter cloth 110, the sludge cake filtered between the filter cloth 110 and the filter cloth 110 falls smoothly downward by its own weight, allowing it to be removed smoothly and efficiently.

Moreover, the operating tool 141 is lowered between the filter cloth 110 and sprays washing water through the washing water nozzle 143, and at the same time, the surface of the filter cloth 110 in the elastically installed state is scraped by the scraper 142. This allows the sludge cake to be completely and quickly removed by scraping, and a curved surface is formed on the protruding frame 133 to enable more efficient sludge removal.

The above description is an illustrative description of the present invention, and the embodiments posted in the specification are not intended to limit the technical idea of the present invention, but are for illustrative purposes, so those skilled in the art will understand the present invention. Various modifications, transformations, or substitution of steps will be possible without departing from the technical idea of . Therefore, the scope of protection of the present invention should be interpreted based on the matters stated in the claims, and technical matters within the equivalent scope thereof should also be interpreted as being included in the scope of rights of the present invention.

1: Wastewater treatment device 10: Main body
20: water collection unit 30: neutralization unit
40: Neutralizer supply unit 50: Drive control unit
100: filtration and detachment unit 110: filter cloth
111: moving passage 120: filter plate
121: moving passage 122: drainage passage
123: filtration groove 124: uneven surface
130: Tally elastic part 131: Support frame
132: elastic piece 133: protruding frame
134: curved surface 140: sludge removal unit
141: operating tool 142: scraper
143: Washing water nozzle 144: Guide block
145: Supply hose 150: Elevation lowering part
151: guide frame 152: computerized bolt
153: Rotating gear 154: Timing belt
155: driving motor

Claims (7)

A water collection unit 20 that collects and agitates wastewater generated at construction sites and supplies it to the filtration and separation unit 100, and receives wastewater generated after filtration from the filtration and separation unit 100 and drains it by adjusting its acidity. A neutralizing unit 30 that supplies a neutralizing agent to the neutralizing unit 30, a neutralizing agent supply unit 40 that maintains the acidity below the appropriate level, and a neutralizing agent supplying unit 40 that pressurizes the filtration and detachment unit 100 and simultaneously controls the device. In the wastewater treatment device (1) for construction sites consisting of a driving unit (10),
The filtration and separation unit 100 includes a filter cloth 110 forming a moving passage 111,
A filter plate 120 coupled to the inside of the filter cloth 110 and forming a filter groove 123,
A detachment elastic part 130 installed on the filter plate 120 to elastically expand the filter cloth 110 by pushing it outward,
A sludge removal unit 140 that scrapes and removes cake-like sludge filtered through the filter cloth 110, and
A wastewater treatment device for construction sites, characterized in that it consists of a lifting and lowering unit (150) that moves the sludge removal unit (140) up and down.
According to claim 1,
The release elastic part 130 fixes the square-shaped support frame 131 inside the filtering groove 123 of the filter plate 120 and connects the protruding frame 123 to the support frame 131 with an elastic piece 132. A wastewater treatment device for a construction site, characterized in that the protruding frame (133) is protruded outward in the free state of the elastic piece (132) and the filter cloth (110) is pushed outward to expand.
According to claim 2,
A wastewater treatment device for construction sites, characterized in that the protruding frame 133 of the release elastic portion 130 is formed in a continuous wave shape from top to bottom.
According to claim 1,
The sludge removal unit 140 is provided with a filter cloth 110 and an operating tool 141 formed of a tube that moves vertically between the filter cloth 110, and has elastic scrapers on both sides of the operating tool 141 ( A wastewater treatment device for a construction site, characterized in that it is configured by protruding the 142) and forming a plurality of washing water nozzles 143 downward.
According to claim 4,
A wastewater treatment device for construction sites, characterized in that the supply hose 145 for supplying washing water is communicated with the operating port 141 of the sludge removal unit 140 and a guide block 144 with threaded holes on both ends is coupled to the operating port 141. .
According to claim 1 or 5,
The elevating and lowering unit 150 is formed by standing a pair of guide frames 151 facing each other on the movement line of the filter plate 120, and forming a vertical bolt 152 inside the guide frame 151, and forming a vertical bolt 152 thereon. A wastewater treatment device for construction sites, characterized in that it is configured to penetrate and screw the guide block 144 of the sludge removal unit 140 to (152).
According to claim 6,
A rotating gear 153 is formed on the upper side of the computerized bolt 152, the rotating gear 153 is connected to a timing belt 154, and a drive motor 155 is connected to the upper side of one of the computerized bolts 152. A wastewater treatment device for construction sites, characterized in that.

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