JP4403126B2 - Polluted mud drainage treatment device and polluted mud waste water treatment system - Google Patents

Description

  The present invention relates to a treatment system for contaminated mud water generated mainly at a construction site or the like.

  The treatment of contaminated mud water (sediment mud water) generated at the construction site is basically solid-liquid separation, the solid cake is transported and discarded outside the site, and the purified water is reused as it is or discharged.

  Specifically, the slurry mud water is pumped up from the polluted mud water storage site by an underwater sand pump, primary solid-liquid separation is performed with a screen, the solid part is disposed of, and the aggregated sediment of the polluted mud water that is not separated by the screen is formed. Is disposed as it is or is subjected to secondary solid-liquid separation utilizing a pressure difference, and the separated solid portion is disposed of (Patent Documents 1 and 2). In particular, the solid part is disposed of by being transported outside the site.

  In addition, as a means of treating the contaminated mud water (surplus mud water) at the construction site, there is also a means for pumping up the surplus mud water accumulated in a predetermined vertical hole, adding a solidifying material and a water reducing agent to the surplus mud water and stirring it to make it a semi-solidified state. Known (Patent Document 3).

Japanese Patent Publication No. 4-74041. Japanese Patent Laid-Open No. 6-319916. Japanese Patent Laid-Open No. 10-296232.

  The conventional polluted muddy water treatment systems disclosed in Patent Documents 1 and 2 are intended for sites where a large amount of muddy water (drilling fluid) is used for excavation and large-scale construction sites. However, it is unavoidable to be large-scale, and cannot respond to the site where the amount of muddy water used is small or the generated muddy water is simply treated.

  In addition, the system requires off-site disposal of the separated solids, generates additional industrial waste, and requires secondary treatment.

  Moreover, in the processing means which adds a solidification material directly to the polluted mud described in Patent Document 3, the mud remains in a semi-solid state, and naturally it cannot be discarded as it is, and a re-treatment is required.

  In addition, the submerged sand pump is used for pumping up the muddy water in the conventional means, and a suitable depth is required for pumping up. It must be established on site. In addition, not all of the muddy water is pumped up and processed, and eventually, it is a manual operation or a measure is taken to bury it without any pumping.

  Therefore, the conventional means cannot treat the muddy water generated in the field as it is, and there is a problem that a complicated work of temporarily storing the muddy water in the storage location is required and a problem of residual muddy water treatment.

  Accordingly, the present invention proposes an optimum treatment system that can easily perform all treatments at a small-scale site where the amount of muddy water to be treated is small, and a mud drainage treatment device employed in the system.

A polluted mud drainage system according to the present invention (Claim 1) includes a drainage mechanism of polluted mud water that can be used alone as a waste water treatment device, a solid-liquid separation mechanism of polluted mud water, a solidification treatment mechanism, the drainage mechanism, It consists of a compressor that serves as the drive source for the liquid separation mechanism, and the drainage mechanism for contaminated mud water is an air-driven unit equipped with a suction part with a flat-surfaced suction port that can be grounded and a check valve through which gravel can pass. It consists of a diaphragm pump unit, and the solid-liquid separation mechanism is equipped with a sedimentation tank of an appropriate capacity that can be agglomerated by air agitation. It is a thing.

  Thus, in the drainage mechanism, the operation of the diaphragm pump part (operation by the compressor) sucks muddy water from the suction part. In particular, all the muddy water on the ground surface can be sucked by the grounding of the suction port. By properly discharging to a place, the drainage mechanism can be used alone as a ground surface mud drainage device. Moreover, even if gravel is sucked during suction, it can be sucked and discharged as it is without any trouble.

  In order to treat the contaminated mud water, the mud water sucked by the drainage mechanism is stored in the settling tank of the solid-liquid separation mechanism, the flocculant is added, and after agitation with air, it is allowed to stand, and the supernatant purified water remains as it is. Dispose of in sewage. The agglomerated precipitate is sent to a stirrer of the next solidification processing mechanism. In the stirrer, an inorganic neutral solidifying agent is added and stirred to solidify the aggregated precipitate. Since the solidified product is harmless to the soil, it can be reused as it is.

Further, the polluted mud drainage system according to the present invention (Claim 2) is the polluted mud waste water treatment system of (Claim 1), wherein the agitator of the fixed processing mechanism is driven by an air motor, and all the driving of each mechanism is a compressor. It is characterized by having been driven by.

  Therefore, by bringing an engine-driven compressor to the treatment site, it is possible to treat the contaminated mud water at the site.

The present invention (Claim 3) is characterized in that, in the above invention, the precipitation tank of the solid-liquid separation mechanism is a sealed tank, and the moisture discharge pipe and the solid content discharge pipe are provided with appropriate on-off valves. is there.

  Thus, when the air is stirred in a sealed state, the inside of the settling tank becomes a high pressure state, and when the on-off valve is opened, the solid-liquid separation is transported outside the tank by the pressure inside the settling tank, and the stirring air is effectively used. is there.

Further, according to the present invention (Claim 4) , an air jet pump (conveying force applying mechanism) is provided between the drainage mechanism and the solid-liquid separation processing mechanism, or between the solid-liquid separation processing mechanism and the solidification processing mechanism, or in both the conveying pipes. It is characterized in that long-distance conveyance using the high-pressure air of the compressor can be realized even if the conveyance pipeline between the mechanisms becomes long.

  The present invention is configured as described above, and the entire processing system can be set to an optimum scale by selecting and combining those having the necessary processing capacity of each mechanism corresponding to the use site. It enables on-site processing and does not generate secondary waste to be carried out of the site.

  In addition, by adopting an air-operated diaphragm pump in the drainage mechanism, it is not necessary to dig a storage hole for pumping up muddy water, and the surface of the ground can be operated by operating the water intake port like a vacuum cleaner at a muddy water location away from the pump position. The muddy water can be discharged, and the maintenance of the equipment such as the pump does not fail even if there is no residual water is easy.

  Next, an embodiment of the system of the present invention will be described. FIG. 1 shows a first embodiment of the system of the present invention. This polluted sludge drainage system includes a polluted mud drainage mechanism 1 that can be used alone as a wastewater treatment device, a solid-liquid separation mechanism 2 of polluted mud water, and a solidification treatment mechanism 3. And a drive unit (compressor) 4.

  The polluted muddy water drainage mechanism 1 includes a suction part 11, a suction hose 12, a pump part 13, and a discharge hose 14.

  The suction part 11 includes a suction opening with a flat opening that can be grounded, similar to the suction part of a general vacuum cleaner, and is connected to the pump part 13 by a suction hose 12.

  The pump unit (diaphragm pump) 13 is a drive diaphragm 131 that changes the volume of the pump chamber 132, and includes a check valve 133 at the entrance and exit of the pump chamber 132. In particular, the pump is driven by high-pressure air from the compressor of the drive unit 4, and the check valve 133 employs a ball valve or a swing valve through which gravel can pass.

  The discharge hose 14 is connected to the discharge port of the pump unit 13 and discharges the contaminated mud water A to the next solid-liquid separation mechanism (precipitation tank) 2.

  The solid-liquid separation mechanism 2 is provided with a sedimentation tank of an appropriate capacity (capacity corresponding to the amount of muddy water generated on the site to be used) connected to the compressor of the drive unit 4 so as to be able to stir the air, and the coagulant a It is to be supplied.

  The solidification processing mechanism 3 is a stirrer that stirs and mixes the solidifying agent b and the coagulated sludge B, and the stirrer only needs to have a processing capacity corresponding to the processing capacity of the solid-liquid separation mechanism 2. Is provided with a biaxial agitating blade, which is supplied with electric power from a separate generator (engine drive) 5 and drives the agitating blade motor.

  Thus, it is contaminated by bringing the drainage mechanism 1, the sedimentation tank (solid-liquid separation mechanism) 2, the stirrer (solidification processing mechanism) 3, the engine-driven compressor (drive unit) 4 and the engine-driven generator 5 to the construction site. A muddy water treatment system can be constructed.

  And if the pump part 13 is operated and the suction port of the suction part 11 is assigned to the place where the polluted mud water A is collected in the field, the dirty mud water A is sucked from the suction part 11 by the action of the pump part 13, and the suction hose 12 , Passes through the pump chamber 132 of the pump unit 13, passes through the discharge hose 14, and is discharged to the precipitation tank (solid-liquid separation mechanism) 2.

  In the supply and drainage of the above-mentioned contaminated mud water A, all the mud on the ground surface can be sucked by the grounding of the suction port, and even if small gravel is sucked, it can be carried as it is to the sedimentation tank 2 without any trouble. Residual mud like conventional submersible sand pumps is not generated, clogged, or pumps fail or break due to small gravel suction.

  The drainage mechanism can be used as an independent muddy drainage device in combination with the compressor (drive unit) 4 and can be used as an emergency ground drainage device for stadiums and baseball fields other than construction sites. it can.

  When a predetermined amount of polluted mud water A is accumulated in the sedimentation tank (solid-liquid separation mechanism) 2, flocculant a is added, and high-pressure air is blown into the sedimentation tank 2 from the compressor (drive unit) 4. A and the aggregating agent a are mixed with stirring and allowed to stand for a predetermined time. Then, in the sedimentation tank 2, the polluted mud water A is separated into the sediment B and the supernatant purified water C. Therefore, the supernatant purified water C is discarded as it is into the sewage or reused at the site, and the sediment B is sent to the stirrer (solidification mechanism) 3 throw into.

  When the precipitate B is put into the stirrer (solidification mechanism) 3, an appropriate amount of an inorganic neutral solidifying agent is further added to the stirrer 3 and stirred. When stirring for a predetermined time (depending on the content of the solidifying agent, about several minutes), the precipitate B becomes a solidified material D, and this solidified material D is neutral and harmless to the soil. Can be discarded.

  Therefore, the contaminated mud water treatment system of the above embodiment is constructed by combining each mechanism for performing a predetermined treatment and a driving source in accordance with a work form and processing capacity required on the site, and can be easily used on a small site. It can be applied and all can be processed on site, and has the advantage of not generating secondary waste that must be transported from the site.

  Moreover, the problem which the conventional means which employ | adopted the submerged sand pump is eliminated by employ | adopting a diaphragm pump as a drainage mechanism especially.

  FIG. 3 shows a second embodiment of the system of the present invention. As in the first embodiment, a contaminated mud drainage mechanism 1a that can be used alone as a wastewater treatment apparatus, a solid-liquid separation mechanism 2a, and a solidification treatment mechanism 3a. And a drive unit (compressor 4 and on-off valve control unit 41 for distributing high-pressure air) 4a.

  The polluted mud drainage mechanism 1 a includes a suction part 11, a suction hose 12, a pump part 13, a discharge hose 14, and a conveyance force applying mechanism 15.

  The structure of the suction part 11, the suction hose 12, the pump part 13, and the discharge hose 14 is the same as that of the first embodiment. In particular, the transport force imparting mechanism 15 transports high-pressure air from the compressor 4 in the transport direction. A so-called jet pump structure is employed in which an object (polluted mud water A) is pushed out to the solid-liquid separation mechanism 2a and the mud mud water A on the pump unit 13 side is sucked by injection of high-pressure air.

  The solid-liquid separation mechanism 2a includes a sedimentation tank 21 having an appropriate capacity (capacity corresponding to the amount of muddy water generated on the site of use) connected to the compressor 4 of the drive unit 4a and having a structure capable of stirring air, and a coagulant. In particular, the sedimentation tank 21 is formed by connecting the discharge pipe 24 of the supernatant clean water C and the discharge pipe 25 of the sediment B through the on-off valves 22 and 23 as a sealing structure. . In particular, the discharge pipe 25 for the precipitate B is connected to the next solidification processing mechanism 3a, and when the discharge pipe 25 becomes long, the above-described transport force applying mechanism may be interposed.

  The solidification processing mechanism 3a is a stirrer that stirs and mixes the solidifying agent b and the coagulated sludge B as in the first embodiment, and an air motor that operates with high-pressure air from the compressor 4 as a rotational drive source of the stirring blades. 6 is adopted.

  The drive unit 4a includes a compressor 4 having a predetermined capacity, and an on-off valve control unit 41 for distributing and controlling the high-pressure air of the compressor to each mechanism. In particular, the contaminated mud drainage mechanism 1a and the solid-liquid separation mechanism 2a The solidification processing mechanism 3a does not necessarily perform simultaneous operation. That is, during the sedimentation time in the solid-liquid separation mechanism 2a, the contaminated mud drainage mechanism 1a does not operate, it is only necessary to operate the solidification processing mechanism 3a in order to process the precipitate during the previous treatment, The polluted mud drainage mechanism 1a is operated in a state in which 21 is empty (with a margin). Therefore, the compressor capacity and the operation of the on-off valve control unit 41 may be determined in consideration of the operation time and required capacity of each mechanism.

  Thus, each mechanism of the second embodiment is brought to the construction site to construct a contaminated mud water treatment system, and similarly to the first embodiment, the pump unit 13 is operated and the polluted mud water A at the site is set in the sedimentation tank 21. To discharge.

  When a predetermined amount of polluted mud water A is stored in the settling tank 21, flocculant a is added, and high-pressure air is blown into the settling tank 21 from the compressor 4 to stir and mix the polluted mud water A and the flocculant a. Let stand for a predetermined time. Then, in the sedimentation tank 21, the polluted mud water A is separated into the sediment B and the supernatant purified water C. In particular, since the sedimentation tank 21 has a sealed structure, by selectively opening the on-off valves 22 and 23, the sediment B or the supernatant water C is released by the pressure in the sedimentation tank 21. Thus, effective use of the stirring air is achieved.

  Further, in the solidification processing mechanism 3, as in the first embodiment, the solidification processing of the precipitate B is performed. In particular, the solidification processing mechanism 3 is driven by the air motor 6, and the generator is installed on the site as in the first embodiment. There is an advantage that it is not necessary to bring it in. Of course, the second embodiment is constructed by combining each mechanism and drive source for performing predetermined processing in accordance with the work form and processing capability required at the site, similarly to the first embodiment, and is easy even at a small site. Naturally, it has the advantage that it can be applied and all can be processed in the field and does not generate secondary waste that must be carried out of the field.

BRIEF DESCRIPTION OF THE DRAWINGS General explanatory drawing of 1st embodiment of this invention. Sectional drawing of the pump part. Explanatory drawing of the whole 2nd embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1a Drainage mechanism 11 Suction part 12 Suction hose 13 Pump part 131 Drive diaphragm 132 Pump chamber 133 Check valve 14 Discharge hose 15 Conveying force giving mechanism 2,2a Solid-liquid separation mechanism 21 Precipitation tanks 22, 23 Opening and closing valves 24, 25 Discharge pipe 3, 3a Solidification mechanism (stirrer)
4,4a Drive unit (compressor)
41 On-off valve controller 5 Generator 6 Air motor A Polluted mud water B Precipitate (aggregated sludge)
C supernatant water purification D solidified product a flocculant b solidifying agent

Claims (4)

  A drainage mechanism of polluted mud water comprising a suction part having a suction port with a flat opening and an air-driven diaphragm pump part equipped with a check valve through which gravel can pass, and a settling tank of an appropriate capacity capable of coagulation treatment by air stirring The solid-liquid separation processing mechanism including the sludge sludge water, the compressor as a driving source of the drainage mechanism and the solid-liquid separation mechanism, and the solidification processing mechanism equipped with a stirrer for stirring and mixing the coagulated sludge and the neutral solidifying agent. Contaminated mud water treatment system.   A drainage mechanism of polluted mud water comprising a suction part having a suction port with a flat opening and an air-driven diaphragm pump part equipped with a check valve through which gravel can pass, and a settling tank of an appropriate capacity capable of coagulation treatment by air stirring The solid-liquid separation processing mechanism comprising the sludge sludge water, the solidification processing mechanism equipped with an air motor-driven stirrer that stirs and mixes the coagulated sludge and the neutral solidifying agent, and the compressor that is the drive source of each of the mechanisms. Become a polluted mud water treatment system.   The contaminated mud water treatment system according to claim 2, wherein the settling tank of the solid-liquid separation mechanism is a sealed tank, and an appropriate on-off valve is provided on the moisture discharge pipe and the solid content discharge pipe.   4. A transport force applying mechanism using an air jet pump is interposed between the drainage mechanism and the solid-liquid separation processing mechanism, or between the solid-liquid separation processing mechanism and the solidification processing mechanism, or both. The contaminated mud water treatment system described.

Images