KR101276405B1 - Vacuum drum type sludge concentration apparatus with enhanced dehydration function - Google Patents

Abstract

PURPOSE: A vacuum drum type concentrator with enhanced dehydration performance is provided to maximize dehydration efficiency, and to implement operational processes without a separate pre-dehydration process. CONSTITUTION: A vacuum drum type concentrator includes a coagulation reactor(100) and a drum concentrator(200). The coagulation reactor is equipped with a coagulation chamber(110). The drum concentrator is in connection with the coagulation reactor and includes a concentration chamber(210). A discharging chamber(150) is arranged at one side of the coagulation chamber. A spiral discharging guide(160) is vertically arranged in the discharging chamber. The lower end of the discharging chamber is in connection with the lower end of the concentration chamber. A vertical screen(220), which dehydrates sludge and discharges the dehydrated moisture to a treated water discharging hopper(270), is installed at one side of the concentration chamber. At least one vacuum suction pipe(280) is installed in a drum screen(240) and instantly generates vacuum by sucking air from the upper side of the drum screen. [Reference numerals] (AA) Sludge outlet; (BB) Treated water outlet; (CC,DD) Drain; (EE) Supply raw water

Description

Vacuum drum concentrator with improved dehydration performance {VACUUM DRUM TYPE SLUDGE CONCENTRATION APPARATUS WITH ENHANCED DEHYDRATION FUNCTION}

The present invention relates to a vacuum drum concentrator with improved dehydration performance, and more particularly, by inducing the inflow of external air to create an instant vacuum state to maximize the sludge concentration efficiency by having a better dewatering performance than a simple gravity dewatering performance. It relates to a vacuum drum concentrator with improved dehydration performance.

Generally, sewage discharged from a flush toilet, bath, kitchen, etc., manure or sludge collected from a toilet, or manure or livestock wastewater of livestock are first processed in sewage treatment facilities or septic tanks installed in each household or industry. It is treated in sewage treatment plant, wastewater treatment plant or wastewater treatment plant.

However, since the treated objects such as sewage, manure and sludge are mixed with a large amount of water and solids, the purification process may be properly performed without separating and removing the solids (hereinafter referred to as 'sludge'). Can't.

Therefore, the purification process includes a step of separating water and sludge through a dehydration process.

Such a sludge dewatering method includes a belt press method or a screw press method for separating water by directly pressing the sludge by a filter cloth or a screw passing through a roller.

However, in this case, since the apparatus is complicated and large in size, manufacturing costs are high, dehydration takes a lot of time, and there is a problem that a lot of moisture remains in the cake discharged due to low dehydration efficiency.

Thus, as shown in Korean Patent No. 081315, an example of installing a gravity type preliminary dehydration device to increase dewatering efficiency by performing preliminary dehydration before the dehydration has been disclosed.

However, even if such a preliminary dehydration device was added, the dehydration efficiency did not increase significantly in the actual site, and it was confirmed that the reason lies in the raw water (raw wastewater).

In other words, the wastewater, which is the raw water, is kept in a state of being pulverized while being trapped in a storage tank for a long time, so no matter how much coagulant is added, the reactivity is low and the aggregation is not good.

Therefore, dehydration of raw water that is not condensed will inevitably reduce the dehydration efficiency. However, even if a good facility is provided, such as a preliminary dehydration device, the dehydration efficiency cannot be increased. To have.

As a solution, coagulation reaction is carried out by adding flocculant while sufficiently aerationing old raw water, and passing through the dehydration apparatus with sufficient sludge through this allows more effective dehydration, but it is expensive because a separate facility for aeration should be provided. In addition, there is a limit to undergo a structural change of the facility according to the addition of the facility.

In addition, there is a limit to increase the dehydration efficiency even if the coagulation reaction is good, even with a simple gravity drum type dehydration device alone.

The present invention was created in view of the above-mentioned problems in the prior art as described above, and a separate preliminary dehydration device because the dehydration efficiency is high because the vacuum induction function is included in addition to the composition and gravity dewatering that can animate raw water The main purpose is to provide a vacuum drum concentrator of a new concept having improved dewatering performance compared to the existing without including.

The present invention is a means for achieving the above object, the coagulation chamber, a fixed frame fixed across the top of the coagulation chamber, a stirring motor fixed on the fixed frame, a stirring shaft connected to the stirring motor, the stirring shaft Aggregation reaction tank including a plurality of stirring paddles spaced apart on the bed; Rectangular thickening chamber connected to the flocculation tank, sludge conveying impeller installed on the upper portion of the thickening chamber chamber, a rotary drum screen provided at intervals with the impeller, provided on the upper portion of the thickening chamber chamber and simultaneously rotating the impeller and drum screen A drive motor for discharging, a sludge discharge hopper installed at intervals with the drum screen to collect and discharge sludge transferred through the drum screen, and a treated water discharge hopper installed at a lower portion of the drum screen to discharge the dehydrated treated water. A drum concentrator comprising: a drum concentrating tank; One side of the coagulation chamber is further provided with a discharge chamber in communication with the upper portion of the coagulation chamber; A spiral discharge guide is vertically arranged inside the discharge chamber; A lower end of the discharge chamber and a lower end of the thickening chamber are in communication with each other; One side of the thickening chamber chamber is further provided with a vertical screen for dewatering the sludge and then discharges the dehydrated water to the treated water discharge hopper; The inside of the drum screen provides a vacuum drum concentrator having an improved dewatering performance, characterized in that at least one or more vacuum suction pipes which suck the air on the upper side of the drum screen to instantaneously form a vacuum.

At this time, the inner corner of the coagulation chamber is installed to increase the agitation efficiency of the stirring paddle by installing a baffle in an oblique direction, and a coagulant supply pipe is installed in any one of the spaces separated by the baffle, the coagulant at the bottom of the coagulation chamber It is also characterized by being configured to be injected into.

In addition, the inner bottom of the thickening chamber chamber is characterized in that the aeration diffuser is further installed while aeration of the introduced sludge aeration.

In addition, the inside of the drum screen and the rear of the vertical screen is characterized in that the drum washing pipe and the screen washing pipe for washing water injection to prevent screen clogging is further installed.

In addition, the lower portion of the vacuum suction pipe is connected to the collection chamber, the suction pipe connected to the outer surface of the upper end of the collection chamber, the valve and filter installed on the suction pipe, and the blower is connected to the vacuum suction pipe again and the moisture and sludge in the sucked air It is also characterized by being configured to recycle only air after separation.

According to the present invention, maximizes the coagulation reaction through the raw water aeration function, and through the vacuum suction function has an additional dehydration promoting effect in addition to gravity dehydration can maximize the dehydration efficiency, and do not need to go through a separate preliminary dehydration process Can be simplified and the cost of equipment can be reduced.

1 is an exemplary conceptual view from the front of a vacuum drum concentrator according to the present invention.
2 is an exemplary partial cross-sectional view of a drum concentrating tank constituting a vacuum drum concentrator according to the present invention.
3 is an exemplary plan view of a vacuum drum concentrator according to the present invention.
4 is an enlarged view illustrating main parts of FIG. 1.
5 is an exemplary view illustrating a washing water supply structure constituting the vacuum drum concentrator according to the present invention.
6 is an exemplary view illustrating an air supply structure constituting the vacuum drum concentrator according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 3, the vacuum drum concentrator according to the present invention includes an agglomeration reaction tank 100 and a drum concentrating tank 200.

First, the coagulation reaction tank 100, the coagulation chamber 110, a fixed frame 120 fixed across the top of the coagulation chamber 110, and the stirring motor 130 fixed on the fixed frame 120 And a stirring shaft 132 connected to the stirring motor 130, a plurality of stirring paddles 140 provided at intervals on the stirring shaft 132, and provided at one side of the agglomeration chamber 110. It comprises a discharge chamber 150 and a spiral discharge guide 160 installed in the discharge chamber 150.

At this time, the lower one side of the coagulation chamber 100 is provided with a raw water supply port 112 is connected to the raw water supply pipe (not shown) so that the raw water can be supplied, the lower surface of the coagulation chamber 100, coagulation if necessary A discharge port 114 is provided to discharge and remove the raw water or residues stored in the chamber 110.

Of course, these raw water supply port 112 and the discharge port 114 is provided with an opening and closing valve (not shown), respectively, to be configured to adjust the opening degree, which will be omitted in the present invention because it is a natural structure.

In addition, a baffle 116 is provided at an inner corner of the coagulation chamber 100.

The baffle 116 is intended to prevent agitation efficiency from dropping due to the angular shape of the corners when stirring the internal raw water by the stirring paddle 140 as well as to configure the coagulant through a part thereof.

In this case, the coagulant may be directly introduced through any one of the corner spaces partitioned by the baffle 116, but as shown in the example, the coagulant may be supplied through a separate coagulant supply pipe 170.

At this time, the coagulant is preferably installed to be discharged into the coagulation chamber 100 through the bottom end of the coagulation chamber 100, which is because the raw water is supplied through the bottom end to put the coagulant at the same level This is to maximize the stirring efficiency of the flocculant and the raw water by allowing the primary stirring automatically according to the flow of the raw water to be supplied, and the secondary stirring through the forced rotation of the stirring paddle 140.

As such, when raw water is forcedly stirred by the rotation of the stirring paddle 140, a kind of aeration function is performed, so that the reaction with the coagulant is promoted, and the overall reaction is induced to improve the coagulation efficiency.

In addition, an upper portion of the coagulation chamber 100 and an upper portion of the discharge chamber 150 communicate with each other, and a lower portion of the discharge chamber 150 is connected to the connection passage 180, and the connection passage 180 is the thickening chamber chamber 210. Is in communication with the bottom.

Therefore, the sludge which is agitated and reacted with the flocculant while being aerated is introduced into the discharge chamber 150 through the upper part of the flocculation chamber 100 and flows down along the spiral discharge guide 160 of the discharge chamber 150. Reaction is maximized.

Meanwhile, as shown in FIGS. 1, 2, and 3, the drum concentrating tank 200 has a rectangular thickening chamber 210 having a narrow width and extending upwardly, and a vertical formed on one side of the thickening chamber chamber 210. Screen 220, the sludge conveying impeller 230 installed on the top of the thickening chamber 210, the rotary drum screen 240 provided at intervals with the impeller 230, and the thickening chamber chamber 210 A driving motor 250 provided at an upper portion of the impeller 230 and the drum screen 240 at the same time; a sludge discharge hopper 260 adjacent to the drum screen 240 and spaced apart from the drum; The treatment water discharge hopper 270 installed at the lower portion of the screen 240 to discharge the dewatered treatment water and the drum screen 240 are installed inside the drum screen 240 and suck the upper air inside the drum screen 240 to instantaneously. A plurality of vacuum suction pipes 280 and a plurality of cleaning nozzles to form a vacuum A drum washing tube 290a having a 292 and spraying the washing water to the inner lower portion of the drum screen 240 to prevent the blockage, and a screen installed to spray the washing water toward the vertical screen 230 to prevent the blockage. It comprises a washing tube (290b).

In this case, a separate aeration diffuser 300 having a plurality of diffuser nozzles 302 is installed at an inner lower side of the thickener chamber 210 to strongly push the air toward the upper side of the thickener chamber 210 through the supplied air. By blowing aeration to prevent the unreacted flocculant is generated, the sludge treated material transferred from the flocculation reaction tank 100 can be induced to rise smoothly.

In addition, the bottom surface of the thickening chamber chamber 210, of course, should be provided with a drain (212) for discharging the internal residue if necessary.

In addition, the height of the thickening chamber 210 should be kept lower than the height of the discharge chamber 150, which is to be discharged from the discharge chamber 150 to fill the thickening chamber 210, the discharge chamber ( 150) the potential energy on the side should be larger.

In addition, the vertical screen 220 is installed in a portion of the vertical length of the thickening chamber 210, preferably in the middle, it is installed in the vertical direction with a predetermined width, the process of rising from the thickening chamber 210 Part of the water, ie, the water contained in the sludge, is discharged through the vertical screen 220, so that preliminary dehydration is performed before going to the drum screen 240.

To this end, one side of the thickening chamber chamber 210, the vertical screen 220 is installed must naturally constitute one side of the treated water discharge hopper 270, the treated water screened through the vertical screen 220, that is, dehydration The collected water is collected in a separate space through the treated water discharge hopper 270.

In addition, the rear screen of the vertical screen 220 is provided with a screen washing tube (290b) having a spray nozzle (not shown) as a means for eliminating this when the clogging of the vertical screen 220, through the reverse injection method By spraying the water to the washing is also possible while preventing the clogging of the vertical screen 220.

In addition, the impeller 230 is a means for transporting the processed material, that is, the sludge is raised to the top of the thickener chamber 210 toward the drum screen 240.

Therefore, the raised sludge is passed to the sludge discharge hopper 260 through the drum screen 240, where gravity dehydration and vacuum dehydration are simultaneously performed in the drum screen 240.

Here, since the drum screen 240 is a structure already known in the art, including the Patent No. 081315 previously mentioned in the prior art, a detailed description thereof is omitted, and the screen is formed in a drum form as a main function. , It rotates to perform the dewatering function, and the dewatered sludge is transferred to the sludge discharge hopper 260 provided on the opposite side, and a plurality of washing nozzles therein to prevent clogging of the drum screen 240 A drum washing tube 290a having 292 is provided.

However, in the present invention, the vacuum suction pipe 280 that was not found in the existing drum screen 240 is further included in the drum screen 240.

The vacuum suction pipe 280 is piped in the longitudinal direction of the drum screen 240, as shown in Figure 4, enlarged, connected to the exhaust pipe 282 is installed to be connected to the suction fan (not shown) to suck the air It is installed to communicate through the tube 284 to create a momentary vacuum around the suction tube by sucking the internal air of the drum screen 240 to enable the vacuum dehydration with gravity dehydration to maximize the dehydration effect.

At this time, the vacuum suction pipe 280 may be installed along a plurality of circular arcs of the upper side of the drum screen 240, the example shown is only to illustrate that two installed at intervals of 90 °.

In addition, a plurality of suction ports 286 are formed in the vacuum suction pipe 280, but it is particularly preferable that the suction is effectively and efficiently formed to have a substantially 'V' shape.

In this way, the water dehydrated by gravity dehydration and vacuum dehydration through the drum screen 240 is discharged through the treated water discharge hopper 270.

In addition, the dewatered sludge is collected into the sludge discharge hopper 260 and then collected.

And, as shown in Figure 5, it is possible to further improve the structure for supplying the wash water, which is a system to be able to recycle what is already used as the wash water again.

For example, a treatment tank 400 is provided to collect the treatment water discharged from the lower end of the treatment water discharge hopper 270, and the inside of the treatment tank 400 detects the level of the treatment water (not shown). Is installed, the discharge line 410 is formed on the upper side of the outer peripheral surface of the treatment tank 400, the discharge line 410 is a valve and filter 420 is installed, the discharge line through the valve and filter 420 A pump 430 is installed at the end of 410, and the treatment water can be recycled by piping the discharge line 410 through the pump 430 to supply washing water.

Of course, the washing water supply must be provided in addition to the treatment water recycling line, it should be natural to open the valve when the capacity is recyclable to be designed to utilize it.

In addition, as shown in Figure 6 it can be configured to recycle the air (air) sucked to form a vacuum, at which time it is necessary to separate them from the air because the sucked air contains some water or sludge have.

To this end, the collection chamber 600 is provided, the upper side of the collection chamber 600, the suction pipe 610 is piped at a position higher than the foreign matter level, such as collected water, the filter or valve 620 on the suction pipe 610 ) May be installed, and a blower (suction fan) 630 may be installed at a part to resupply only the separated air.

In this way, efficient operation can be realized while increasing the degree of recycling of the recovered matter.

As such, the vacuum drum concentrator with improved dehydration performance according to the present invention includes a function of aeration of raw water, so that the reactivity with the coagulant is improved, so that the coagulation efficiency is excellent, so that it is easy to sludge, and the dehydration rate is increased. The dehydration efficiency is maximized by double dehydration using double screen structure, ie, vertical screen and drum screen. Above all, the vacuum dewatering function is added in addition to the simple gravity dehydration in the drum screen, which makes it possible to dehydrate almost completely. It is expected that the efficiency and utility will be remarkably improved since it implements the preliminary dehydration function itself without a separate facility for preliminary dehydration as in the prior art.

100: coagulation reaction tank 110: coagulation chamber
120: fixed frame 130: stirring motor
140: stirring paddle 150: discharge chamber
160: discharge guide 170: flocculant supply pipe
180: connecting passage 200: drum concentration tank
210: thickening chamber 220: vertical screen
230: impeller 240: drum screen
250: drive motor 260: sludge discharge hopper
270: treated water discharge hopper 280: vacuum suction pipe
290a: Drum Washing Tube 290b: Screen Washing Tube
300: aeration pipe for aeration 400: treatment tank
410: discharge line 420: valve and filter
430: Pump

Claims (5)

A coagulation chamber having a narrow width and a long length, a fixed frame fixed across the upper portion of the coagulation chamber, a stirring motor fixed on the fixed frame, a stirring shaft connected to the stirring motor, and spaced on the stirring shaft An agglomeration reaction tank including a plurality of stirring paddles installed; A rectangular thickening chamber chamber connected to the agglomeration reaction tank and installed in the same direction, a sludge conveying impeller installed at the upper portion of the thickening chamber chamber, a rotary drum screen spaced from the impeller, and provided at an upper portion of the thickening chamber chamber. And a driving motor for simultaneously rotating the drum screen, a sludge discharge hopper disposed at intervals with the drum screen to collect and discharge the sludge transferred through the drum screen, and a process of discharging the treated water installed at the lower portion of the drum screen. A drum concentrator comprising: a drum concentrating tank including a water discharge hopper;
One side of the coagulation chamber is further provided with a discharge chamber in communication with the upper portion of the coagulation chamber;
A spiral discharge guide is vertically arranged inside the discharge chamber;
A lower end of the discharge chamber and a lower end of the thickening chamber are in communication with each other;
One side of the thickening chamber chamber is further provided with a vertical screen for dewatering the sludge and then discharges the dehydrated water to the treated water discharge hopper;
The inside of the drum screen is a vacuum drum concentrator having improved dehydration performance, characterized in that at least one or more vacuum suction tube is further installed to suck the air on the upper side of the drum screen to form a vacuum instantaneously.
The method according to claim 1;
A baffle is installed on the inner corner of the coagulation chamber to increase the stirring efficiency of the stirring paddles, and a coagulant supply pipe is installed in any one of the spaces separated by the baffle to inject coagulant to the bottom of the coagulation chamber. And a dehydrating performance-enhanced vacuum drum concentrator.
The method according to claim 1;
A vacuum drum concentrator having improved dewatering performance is further provided at an inner lower end of the thickening chamber chamber, wherein an aeration diffuser is installed to increase aeration of the introduced sludge.
The method according to claim 1;
Dehydration performance improved vacuum drum concentrator, characterized in that the lower side of the drum screen and the rear of the vertical screen is further provided with a washing water spray drum washing tube and the screen washing tube for preventing screen clogging.
The method according to claim 1;
A collection chamber in which the lower end of the vacuum suction pipe is piped, a suction pipe connected to an outer surface of the upper end of the collection chamber, a valve and a filter installed on the suction pipe, and a blower are installed and then connected to the vacuum suction pipe again to separate water and sludge from the sucked air. A dehydrating vacuum drum concentrator, characterized in that it is configured to recycle only post-air.

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