CN103334469A - Processing system and processing technology for removing river pollution bottom silt in central urban area - Google Patents

Processing system and processing technology for removing river pollution bottom silt in central urban area Download PDF

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Publication number
CN103334469A
CN103334469A CN2013102928655A CN201310292865A CN103334469A CN 103334469 A CN103334469 A CN 103334469A CN 2013102928655 A CN2013102928655 A CN 2013102928655A CN 201310292865 A CN201310292865 A CN 201310292865A CN 103334469 A CN103334469 A CN 103334469A
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mud
silt
ship
treatment
pump
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CN2013102928655A
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CN103334469B (en
Inventor
沈昆根
盛阿五
黄科
陈洪林
朱文龙
陈强
步海明
沈建华
翁国刚
龚平
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SHANGHAI HONGCHENG INDUSTRIAL DEVELOPMENT Co Ltd
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SHANGHAI HONGCHENG INDUSTRIAL DEVELOPMENT Co Ltd
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Abstract

The invention discloses a processing system and processing technology for removing river pollution bottom silt in a central urban area. The processing system comprises a multi-functional desilting vessel, a silt storage and transportation vessel and a silt dehydrating and drying vessel, wherein the multi-functional desilting vessel, the silt storage and transportation vessel and the silt dehydrating and drying vessel are communicated through pipelines. The multi-functional desilting vessel comprises a machine body, wheel-type supporting legs, a coarse garbage collection tool/reamer tool arranged at one end of the machine body and a first hydraulic system used for driving the coarse garbage collection tool/reamer tool. The silt storage and transportation vessel comprises a storage and transportation vessel body, positioning piles and a silt cabin, wherein a plurality of stirrers are further arranged in the silt cabin, the silt cabin is connected to the silt dehydrating and drying vessel through a pipeline. The silt dehydrating and drying vessel comprises a dehydrating and drying vessel body, positioning piles, a second hydraulic system, a stirring cabin, a chemical feed device and a drying device. According to the processing technology, a mobile processing station is adopted, all the devices are arranged aboard for operation, and therefore land resources are not occupied. Moreover, a processing method is simple, a processing period is short, the silt processing is thorough, and operability is high.

Description

Be used for treatment system and treatment process that inner city pollution of river bed mud is removed
Technical field
The present invention relates to a kind of riverway sludge treatment process, particularly, relate to a kind for the treatment of system and treatment process for the removing of inner city pollution of river bed mud.
Background technology
Shanghai City He Hu is numerous, gathers in the network of rivers, is typical tidal river network area, and water resource is abundant, but hydraulic gradient is mild, and current come and go, and self-purification capacity is relatively poor, and river channel sedimentation is more serious, and water quality is relatively poor.In the central area, surrounding resident density is bigger, and the river course belongs to the tidal waterway mostly in the zone, river moves back and forth with morning and evening tides, part river bottom mud alluvial phenomenon is more outstanding, contains hazardous substancess such as tens heavy metal species, organic pollution in the bed mud, and water quality and aquatic attitude are brought considerable influence.Turn on the polluted bed mud during summer high temperature and bubble through the water column, cause water quality deterioration and water body visual perception effect relatively poor.
The channel cleanout engineering is one of effective way of removing polluted bed mud, river training water quality.For many years inner city, the Shanghai City method that adopts hydraulic suction dredge grab bucket to excavate bed mud is substantially dredged, but there is bigger drawback in this job practices.At first, in the grab bucket lifting process, the with serious pollution mud scum of part and bed mud can drain back in the river course again along the slit of grab bucket, make pollution of river bed mud still exist, and hazardous substancess such as heavy metal are still residual, and soil is then scooped away by grab bucket relatively preferably.Secondly, this job practices need be drained river cutout back the river bed polluted bed mud is removed, but do not possess such execution conditions in the inner city, mainly contain several respects reason: the one, the river course, inner city participates in whole city's water resource scheduling, and bearing the critical function of flood control and drainage, can't realize the cutout construction; The 2nd, part river course bank is ecological revetment, and neighboring buildings is very near apart from the river course, may bring influence to structural stability in case drain river; The 3rd, though the part river course is piece stone structure flood-control wall, there are situations such as quicksand in the river course periphery, in case destroy river and phreatic pressure balance, possible generator tube emerges in large numbers and resembles, serious consequence such as cause that flood-control wall is caved in.
At present, domestic pollution of river bed mud is removed the method that generally adopts and is mainly contained " grab bucket is dredged+natural mummification " and " strand is inhaled and dredged+cofferdam nature mummification " dual mode, engineering construction is more extensive, needs the larger area construction plant, and easily soil is caused secondary pollution; The method and the traditional extensive style of external less employing is dredged, adopting more is the method for cutter suction dredger+mechanical dehydration.It is the mud form that river course strand is inhaled the mud that the desilting of dredging comes out, and moisture content is about 95%-97%, and not only freight volume is huge if directly transport, and increase cost of transportation, and slime water is revealed easily in transportation, and the transportation route environment is caused adverse effect.After the sludge dewatering, sludge volume reduces significantly, and freight volume has only the 1/8-1/10 of former pipeline run, can save a large amount of freights, reduces the stacking area of mud.
In conjunction with Shanghai City river bottom mud present situation, the consideration pair twist is inhaled formula suction dredge scheme and is made primary study, comprise strand suction mode, operation control, sludge treatment, mode of movement etc., take into account bed mud elimination efficiency and operation cost of investment, determining the corresponding plant equipment of basis research of typical process flow, make every effort to make device miniaturization, modularization and usefulnessization, possess the possibility of applying.
Summary of the invention
The treating stations that the purpose of this invention is to provide a kind of movable type of removing for inner city pollution of river bed mud, all equipment are arranged in shipboard operation, do not take land resources, and in order to satisfy the requirement of inner city channel cleanout, the above highly control of all devices waterline is below 2 meters, noise control is being no more than 75 decibels outside 7 meters of equipment, the uncovered cabin of all devices all has tilt, prevents distributing of peculiar smell.
For achieving the above object, the invention provides a kind for the treatment of system for the removing of inner city pollution of river bed mud, this system comprises multi-functional dredger, mud accumulating ship and the sludge dewatering mummification ship that is communicated with by pipeline;
Described multi-functional dredger comprises:
Body,
Be provided with four at body four jiaos and can only reach the wheeled supporting leg that swings up and down;
Be arranged on thick garbage-cleaning instrument or the reamer tool (thick garbage-cleaning instrument or reamer tool are installed as required) of body one end;
Be used for driving first hydraulic system of described thick garbage-cleaning instrument or reamer tool;
Described mud accumulating ship comprises:
The accumulating hull;
Be arranged on the guide pile that four on four jiaos of the accumulating hulls can only automatic lifting be toppled over; And
Be arranged on the spoil hopper of midship, this spoil hopper top is provided with the revolution fine fack; This revolution fine fack is connected on the barge by belt conveyer; Also be provided with some agitators in this spoil hopper; This spoil hopper is connected on the described sludge dewatering mummification ship by pipeline, the mud in the spoil hopper by the slush pump group through tubing pump to the described sludge dewatering mummification ship;
Described sludge dewatering mummification ship comprises:
The dehydration and drying hull;
Be arranged on the guide pile that four on four jiaos of the dehydration and drying hulls can only automatic lifting be toppled over;
Be arranged on second hydraulic system of dehydration and drying midship;
By the stirring cabin that pipeline is communicated with spoil hopper, be provided with some agitators in this stirring cabin;
The medicine machine that is connected with described stirring cabin inlet duct joins medicament in the stirring cabin by pipeline by this medicine machine;
The mummification equipment that is connected with described stirring cabin pipeline.
The above-mentioned treatment system that is used for inner city pollution of river bed mud removing, wherein, described reamer tool is the environmental protection screw reamer.
The above-mentioned treatment system that is used for inner city pollution of river bed mud removing wherein, is provided with protective cover around the described reamer.
The above-mentioned treatment system that is used for inner city pollution of river bed mud removing, wherein, described thick garbage-cleaning instrument is back hoe, this back hoe has leaking hole.
The above-mentioned treatment system that is used for inner city pollution of river bed mud removing, wherein, described thick garbage-cleaning instrument is the closed hydraulic pressure grab bucket, this closed hydraulic pressure grab bucket is clamshell bucket, has two hydraulic jacks, can realize initiatively extracting.
The above-mentioned treatment system that is used for inner city pollution of river bed mud removing, wherein, described thick garbage-cleaning instrument is the pump bucket, this pump bucket comprises the rake tool of establishing the spiral destroyer in one, grid is equipped with at rear portion at this destroyer, slush pump is equipped with on top at the pump bucket, makes the pump bucket when rake is got the mud rake be inhaled in the bucket capacity of pump bucket.
The present invention also provides a kind of and has adopted the above-mentioned treatment system that is used for inner city pollution of river bed mud removing to carry out the treatment process that bed mud is removed, this technology comprises silt displacement, bed mud transportation and bed mud treatment step, wherein, described silt displacement comprises following steps:
Step 1 adopts multi-functional dredger to carry out thick garbage-cleaning, utilizes first hydraulic system to drive described thick garbage-cleaning instrument the thick and stiff rubbish in the bed mud and soft fabric pre-cleaning are handled, and removes thick rubbish;
Step 2, the mud strand is inhaled and is handled, and first hydraulic system driving reamer by multi-functional dredger stirs bed-silt, by conveyance conduit mud is delivered directly to the spoil hopper of mud accumulating ship with the diving sludge pump;
Step 3, adopt mud accumulating ship to carry out homogeneous and handle: filter through the revolution fine fack, the bulky grain foreign material that sieve are transported on the barge through belt conveyer, remaining mud stirs through agitator in spoil hopper, carries out homogeneous and handles;
Step 4, adopt sludge dewatering mummification ship flocculation sediment: with the mud after step 3 homogeneous is handled, adopt the slush pump group through the stirring cabin of tubing pump to sludge dewatering mummification ship, add flocculant by the control medicine machine to stirring in the cabin, make mud assemble the formation graininess fast, to guarantee sludge dewatering efficient;
Step 5, dehydration: make the mud of moisture content about 97% behind the flocculation sediment, the mummification equipment that enters sludge dewatering mummification ship dewaters; Dried mud after the dehydration is transported away supernatant backflow recycling.
Above-mentioned treatment process wherein, before described step 1, arranges earlier fixed point desilting groove in the river course.
Above-mentioned treatment process, wherein, before described step 2, the mud after earlier the thick garbage-cleaning of step 1 being handled, natural sedimentation 3-8 days.
Sludge treatment system and treatment process that the present invention adopts have following technical advantage:
1, adopt the method for strand suction formula to draw bed mud, this method has better cleaning effect for mud scum and the bed mud of segmentation, improved the drawback of conventional method, residual hazardous substancess such as heavy metal are removed comparatively completely in the bed mud that can will float, and the water quality in river course is improved at all.
2, whole channel cleanout operation is all carried out on the water, has solved the restricted predicament in conventional method place.The mud that mud strand suction ship is drawn directly is sent on the sludge dewatering ship and dewaters, and directly dewaters through homogeneous and the flocculation of mud, and spin cycle shortens greatly.Low through the mud water content after the dehydration, easier transportation after volume reduces has reduced the cost of freight volume and transportation.
3, the present invention turns to routine servicing by traditional irregular Dredging Construction, the fixed point desilting groove of some matrixs is set in the bottom, river course, because fine grain unsteady mud has certain fluidity, along with back and forth flowing of current, mud scum flows to matrix desilting groove and in this zone enrichment, only need be absorbed the mud in the fixed point desilting groove and get final product, and have significantly reduced the engineering quantity of traditional desilting.This fixed point desilting mode can protect the habitat, river course outside the desilting groove, is beneficial to the recovery of water body self-purification ability, helps the ecological construction after the whole desilting in river course.
Description of drawings
Fig. 1 is the lateral view of the multi-functional dredger (thick garbage-cleaning instrument is back hoe 131) of a kind for the treatment of system of removing for inner city pollution of river bed mud of the present invention.
Fig. 2 is the vertical view of the multi-functional dredger (thick garbage-cleaning instrument is back hoe 131) of a kind for the treatment of system of removing for inner city pollution of river bed mud of the present invention.
Fig. 3 is the lateral view of the multi-functional dredger (thick garbage-cleaning instrument is closed hydraulic pressure grab bucket 132) of a kind for the treatment of system of removing for inner city pollution of river bed mud of the present invention.
Fig. 4 is the lateral view of the multi-functional dredger (thick garbage-cleaning instrument is pump bucket 133) of a kind for the treatment of system of removing for inner city pollution of river bed mud of the present invention.
Fig. 5 is the lateral view of the mud accumulating ship of a kind for the treatment of system of removing for inner city pollution of river bed mud of the present invention.
Fig. 6 is the vertical view of the mud accumulating ship of a kind for the treatment of system of removing for inner city pollution of river bed mud of the present invention.
Fig. 7 is the lateral view of the sludge dewatering mummification ship of a kind for the treatment of system of removing for inner city pollution of river bed mud of the present invention.
Fig. 8 is the vertical view of the sludge dewatering mummification ship of a kind for the treatment of system of removing for inner city pollution of river bed mud of the present invention.
Fig. 9 carries out the process chart of sludge treatment for a kind for the treatment of system for the removing of inner city pollution of river bed mud of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples concrete technical scheme of the present invention is described.
The invention provides a kind for the treatment of system for the removing of inner city pollution of river bed mud, this system comprises multi-functional dredger, mud accumulating ship and the sludge dewatering mummification ship that is communicated with by pipeline.
Shown in Fig. 1-4, described multi-functional dredger comprises:
Body 110,
Be provided with four at body 110 four jiaos and can only reach the wheeled supporting leg 120 that swings up and down;
Be arranged on thick garbage-cleaning instrument or the reamer tool of body 110 1 ends; Further, described thick garbage-cleaning instrument comprises: back hoe 131(is as shown in Figure 1 and Figure 2), closed hydraulic pressure grab bucket 132(as shown in Figure 3) and pump bucket 133(as shown in Figure 4) in any one; Described reamer tool is the environmental protection screw reamer, more preferably, is provided with protective cover around the described reamer; And
Be used for driving first hydraulic system 140 of described thick garbage-cleaning instrument or reamer tool;
As Fig. 5, shown in Figure 6, described mud accumulating ship comprises:
Accumulating hull 210;
Be arranged on the guide pile 220 that four on 210 4 jiaos of the accumulating hulls can only automatic lifting be toppled over; And
Be arranged on the spoil hopper 230 of midship, these spoil hopper 230 tops are provided with revolution fine fack 231; This revolution fine fack 231 is connected on the barge by belt conveyer 232; Also be provided with some agitators 233 in this spoil hopper 210; This spoil hopper 210 is connected on the described sludge dewatering mummification ship by pipeline, and the mud after can will handling through the agitator homogeneous by slush pump group 234 is delivered on the sludge dewatering mummification ship through tubing pump.
As Fig. 7, shown in Figure 8, described sludge dewatering mummification ship comprises:
Dehydration and drying hull 310;
Be arranged on the guide pile 320 that four on 310 4 jiaos of the dehydration and drying hulls can only automatic lifting be toppled over;
Be arranged on second hydraulic system 330 at dehydration and drying hull 310 middle parts;
By the stirring cabin 340 that pipeline is communicated with spoil hopper 210, be provided with some agitator (not shown) in this stirring cabin 340;
Medicine machine 350 with described stirring cabin 340 entrances are connected by pipeline joins medicament in the stirring cabin 340 by pipeline by this medicine machine 350;
The mummification equipment 350 that is connected with described stirring cabin 340 pipelines.
As shown in Figure 9, for the above-mentioned treatment system that is used for inner city pollution of river bed mud removing provided by the invention is carried out the technology that bed mud is removed, this technology comprises silt displacement, bed mud transportation and bed mud treatment step, and wherein, described silt displacement comprises following steps:
Step 1 adopts multi-functional dredger to carry out thick garbage-cleaning, utilizes first hydraulic system 140 to drive described thick garbage-cleaning instrument the thick and stiff rubbish in the bed mud and soft fabric pre-cleaning are handled, and removes thick rubbish; Remove thick garbage-cleaning instrument, install reamer tool;
Step 2, the mud strand is inhaled and is handled, and first hydraulic system, the 140 driving reamers by multi-functional dredger stir bed-silt, by conveyance conduit mud are delivered directly to the spoil hopper 230 of mud accumulating ship with the diving sludge pump;
Step 3, adopt mud accumulating ship to carry out homogeneous and handle: filter through revolution fine fack 231, the bulky grain foreign material that sieve are transported on the barge through belt conveyer 232, remaining mud stirs through agitator 233 in spoil hopper 230, carries out homogeneous and handles;
Step 4, adopt sludge dewatering mummification ship flocculation sediment: with the mud after step 3 homogeneous is handled, adopt slush pump group 234 through the stirring cabin 340 of tubing pump to sludge dewatering mummification ship, add flocculant by control medicine machine 350 for 340 li to stirring the cabin, make mud assemble the formation graininess fast, to guarantee sludge dewatering efficient;
Step 5, dehydration: make the mud of moisture content about 97% behind the flocculation sediment, the mummification equipment 360 that enters sludge dewatering mummification ship dewaters; Dried mud after the dehydration is transported away supernatant backflow recycling.
Embodiment
Whole dredging operation of the present invention carries out on the water, adopts the Amphibious type multi-functional dredger to carry out dredging operation, and this dredger is furnished with multiple removable instrument equipment, comprises back hoe 131, closed hydraulic pressure grab bucket 132 and pump bucket 133 or reamer tool.Darker for alluvial, the more serious river course that hardens can adopt back hoe 131 or closed hydraulic pressure grab bucket 132 to carry out digging operation, will excavate mud and directly unload on barge and transport outward; More shallow for alluvial, the more river course of mud scum can adopt pump bucket 133 to carry out dredging operation, mud is delivered to follow-up mud accumulating conveyor by tubing pump, carrying out garbage sorting and homogeneous handles, mud after the processing is delivered to follow-up dehydration and drying ship by tubing pump again and is carried out dehydration and drying, reaches the state of vehicle-mounted transportation.All equipment are arranged in shipboard operation, do not take land resources, and in order to satisfy the requirement of inner city channel cleanout, the above highly control of all devices waterline is below 2 meters, noise control is being no more than 75 decibels outside 7 meters of equipment, the uncovered cabin of all devices all has tilt, prevents distributing of peculiar smell.
Shown in Fig. 1-4, multi-functional dredger equipment is based on ship shape body 110, be equipped with four at body four jiaos and reach the wheeled supporting leg 120 that swings only up and down, can imitate green turtle on the coast creeps, can get on or off the bus voluntarily, for the slow river course of the gradient can be voluntarily the bank waters of coming in and going out up and down, in water, can rely on four the wheeled supporting legs of self to realize the location of working in the water.Stern at body also is equipped with two double helix oars (diagram does not mark), can realize that the water sailing of complete machine shifts.
This machine is furnished with three kinds of instrument equipments, is respectively back hoe 131, closed hydraulic pressure grab bucket 132 and pump bucket 133.Scraper bowl 131 adopts similar land power shovel, has leaking hole; Closed hydraulic pressure grab bucket 132 has two hydraulic jacks for clamshell bucket, can realize initiatively grasping; Pump bucket 133 is equipped with a spiral destroyer in the similar back hoe, grid is equipped with at rear portion at destroyer, slush pump is equipped with on top at pump bucket 133, when the pump bucket is inhaled the mud rake in bucket capacity when rake is got, the spiral destroyer at first carries out broken pulping to bulk, firm mud foreign material, fall bulk materials by grid filtration, directly siphoned away by slush pump then and be pumped to the subsequent job platform.
This multi-functional dredger important technological parameters:
Captain: the 8.0m(hull);
Machine width: 2.6m(is not with buoyancy tank); 3.8m(the band buoyancy tank);
Machine height: 2.7m;
Gap bridge headroom: 〉=2m;
Dig dark: 4.5m;
Operating depth :≤3m;
Backhoe bucket capacity: 0.4m 3
Grab bucket bucket capacity: 0.3m 3
Pump bucket dredge pump clear water flow: 100m 3/ h;
Row is high: 3m;
Array pitch: 〉=200m, (arranging high 3m);
Mud pipe diameter: about 120mm;
Diesel engine power: 60kw.
Multi-functional dredger of the present invention mainly is by changing different construction equipments (back hoe, closed hydraulic pressure grab bucket and pump bucket, environmental protection screw reamer, soil-suction head, rake tool) etc., finishing thick garbage-cleaning and mud strand and inhale operation in whole dredging operation.
Thick garbage-cleaning can have the pump bucket 133 of good absorption effect to clear up with the special-purpose scraper bowl 131 that disposes on the dredger, clam shell grab bucket 132 and to mud scum, and near the garbage disposal landfill yard the thick rubbish that cleaning obtains is transported to is handled.After thick garbage-cleaning was finished, one Zhou Houzai twisted suction through the mud natural sedimentation.
Mud strand is inhaled, and drives the reamer (not shown) by first hydraulic system 140, stirs bed-silt, by conveyance conduit mud is delivered directly to sludge-tank with the sludge pump of diving under water then, and the mud distance of long conveying is 500 meters.Because on-the-spot do not possess the condition that sludge-tank and treatment facility are set, and sludge-tank and treatment facility are arranged on the mud accumulating ship, builds up portable treating stations.
Different construction equipments on the multi-functional dredger are changed easy, rapid, and the construction wobble area of dredging is bigger, can satisfy the requirement of multiple Dredging Construction mode.Screw reamer itself is little to the mud disturbance, installs protective cover again additional around the reamer, can realize that environmental protection dredges, and can carry out the construction of dredging of river course side slope by adjusting the reamer angle.
Mud accumulating ship equipment provided by the invention has a volume to be about 50m based on ship shape body accumulating hull 210 at the middle part of accumulating hull 210 3Spoil hopper 230, but four jiaos of accumulating hull 210 are equipped with the guide pile 220 that automatic lifting is toppled over, and are used for the water location of working, and two double helix oars (diagram is mark) also are housed for the water sailing of complete machine at the body stern.Equipment is when work, the mud of sucking pump being sent here by aforementioned Amphibious type multi-functional desilting pump bucket 133 through 231 letter sortings of revolution fine fack after, mud enters spoil hopper 230,231 pairs of mud of revolution fine fack filter screening, the large granular materials rejecting is delivered on the belt conveyor 232, is directly unloaded on barge by belt conveyor 232.Mud through screening enters spoil hopper 230, two agitators 233 also are housed in spoil hopper 230, that does not stop carries out stir process to mud, and to guarantee the stability of subsequent treatment concentration of hydraulic mixture, the mud that the process homogeneous is handled is pumped to the dehydration and drying ship by slush pump group 234 and carries out follow-up processing.
Mud accumulating shipowner wants technical data:
Captain: 15.0m;
Machine width: 3.8m;
Machine height: 1.6m;
Full-load draft: 1.4m;
Hopper capacity: 〉=50m 3
Belt conveyer width: 800mm, belt conveyer can two-way movements on machine, can bilateral discharging, monolaterally go out machine (ship) limit 〉=1300mm;
The revolution fine fack: rake teeth gap 2mm, material is stainless steel, grid size is: 2m * 1m, inflow-rate of water turbine is: 80-100m 3/ h does not stop up, and has sewage disposal apparatus;
Diesel generating set: 40kw(is furnished with the noise reduction facility);
The above fixture height of waterline :≤2.0m.
Sludge dewatering mummification ship equipment is based on ship shape body dehydration and drying hull 310, at dehydration and drying hull 310 four jiaos but the guide pile 320 that the automatic lifting that adopts 330 transmissions of second hydraulic system is toppled over is housed, be used for the work location of water, at the body stern water sailing that two double helix oars (not showing) are used for complete machine be housed also.Mummification equipment 360 is equipped with at the middle part of dehydration and drying hull 310, can carry out dosing flocculation and dehydration and drying to the mud that the pumping of mud accumulating conveyor comes.Mud without dehydration enters pipeline from mud import D, simultaneously medicine machine 350 add medicament by pipeline enter stir cabin 340(should stir be provided with some mixing plants in the cabin 340), the mud by the stirring homogeneous enters mummification equipment 360 again and carries out drying and other treatment.
Sludge dewatering mummification shipowner wants technical data:
Captain: 15.5m;
Machine width: 3.8m;
Machine height: 1.2m;
Full-load draft: 0.9m;
Diesel generating set: 40kw(is furnished with the noise reduction facility);
The above fixture height of waterline :≤2.0m.
Above-mentioned treatment system is specifically implemented the branch following steps:
Step 1, thick garbage-cleaning
Because public river course, inner city is in the resident living zone, the household garbage of the old accumulation in river bed is more, especially soft fabric, twine reamer easily and block dredge pump, so before desilting, thick and stiff rubbish and soft fabric must be cleared up one time, guarantee no thick rubbish, admant piece and soft fabric in 0.3-0.5 meter of the mud bottom, can guarantee like this that reamer does not twine with dredge pump not stop up, can improve the operating efficiency of inhaling mud again.Thick rubbish can be cleared up in rake and the clam shell grab bucket of going up configure dedicated at ship (as, multi-functional dredger of the present invention) with particular design, and near the garbage disposal landfill yard the thick rubbish that cleaning obtains is transported to is handled.Among the more excellent embodiment, after thick garbage-cleaning was finished, one Zhou Houzai twisted suction through the mud natural sedimentation.
Step 2, the mud strand is inhaled
First hydraulic system 140 by multi-functional dredger drives reamers, stirs bed-silt, by conveyance conduit mud is delivered directly to sludge-tank with the sludge pump of diving under water then, and the mud distance of long conveying is 500 meters.Because on-the-spot do not possess the condition that sludge-tank and treatment facility are set, and can consider sludge-tank and treatment facility are arranged on another ship, builds up portable treating stations.The mud strand is inhaled used equipment ship and is adopted multi-functional dredger.Among the more excellent embodiment, adopt fixed point desilting groove technology regularly mud to be cleared up, every 100 meters desilting grooves that a 20m * 4m * 1m is set, the results of regular determination silt depth is treated when mud reaches certain thickness the mud in the desilting groove to be cleared up.
Step 3, homogeneous is handled
Adopting mud accumulating ship to carry out homogeneous handles: filter through revolution fine fack 231, the bulky grain foreign material that sieve are transported on the barge through belt conveyer 232, remaining mud stirs through agitator 233 in spoil hopper 230, carries out homogeneous and handles.
Step 4, flocculation sediment
Because the bottom, riverbed is uneven and the river bottom mud skewness, the dredger strand is inhaled the mud concentration instability that obtains, if adopt natural sedimentation to concentrate, not only need to consume many times, and be subjected to the restriction of site condition easily, sedimentation effect is poor, therefore before sludge dewatering, adopt flocculation sediment technology, by flocculation mud is assembled fast and formed the larger particles shape, guarantee sludge dewatering efficient.Flocculant selects for use kind commonly used in the water treatment technology to reduce the pollution to river water body.
According to the properties of product of flocculant, add dose and generally control at 50-80g/m 3, adjust according to water quality and sludge concentration.Medicament preparation and adding equipment determine that according to treating capacity liquid coagulant is stored in the medicinal cupping, directly add by adding pump.
Step 5, sludge dewatering
With the mud of moisture content behind the flocculation sediment about 97%, enter sludge dewatering mummification ship and dewater.Because the restriction of inner city site condition, the dehydration facility can not be arranged in the bank, therefore consider medicine machine 350, flocculation sediment equipment (stirring cabin 340) and dewaterer (mummification equipment 360) are arranged on the hull, can with dredger uninterrupted operation synchronously continuously, reduce the transportation of wet mud.Entire job is all carried out belowdecks, the influence to surrounding enviroment can be dropped to minimum.Be subjected to the constraint of hull area and carrying capacity, dehydration equipment is selected for use and is taken up an area of little, in light weight, that efficient is high kind and model.This programme adopts strainer formula sludge dewatering equipment to carry out mud-water separation and handles.The dehydrated sludge moisture content can arrive cargo ship or car by sludge pump or conveyor delivery about 80%, directly be transported to the landfill place.
For avoiding causing the river water quality secondary pollution, the percolate that produces after the sludge dewatering and flushing liquor are back to the front end of sludge dewatering equipment by the pipe special of device for dehydrating sladge waste, flushing water as dewaterer recycles, directly water intaking from the river course during insufficient section of flushing water.
Bed mud after processed still has higher moisture content, as adopting the terrestrial vehicle transportation, and cost height not only, and cause environment pollution easily, this process using barging mode waterborne considers to adopt groove tank car sealing transportation under the case of emergency.During water transportation, in little river course, adopt 30 tons of ships to transport, go to big Ship Transportation to specifying landfill yard to handle.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.

Claims (9)

1. one kind is used for the treatment system that inner city pollution of river bed mud is removed, and this system comprises multi-functional dredger, mud accumulating ship and the sludge dewatering mummification ship that is communicated with by pipeline;
Described multi-functional dredger comprises:
Body (110),
Be provided with four at body (110) four jiaos and can only reach the wheeled supporting leg (120) that swings up and down;
Be arranged on thick garbage-cleaning instrument or the reamer tool of body (110) one ends;
Be used for driving first hydraulic system (140) of described reamer tool or thick garbage-cleaning instrument;
Described mud accumulating ship comprises:
Accumulating hull (210);
Be arranged on the guide pile (220) that four on (210) four jiaos of the accumulating hulls can only automatic lifting be toppled over; And
Be arranged on the spoil hopper (230) of midship, this spoil hopper (230) top is provided with revolution fine fack (231); This revolution fine fack (231) is connected on the barge by belt conveyer (232); Also be provided with some agitators (233) in this spoil hopper (210); This spoil hopper (210) is connected on the described sludge dewatering mummification ship by pipeline, the mud in the spoil hopper (210) by slush pump group (234) through tubing pump to the described sludge dewatering mummification ship;
Described sludge dewatering mummification ship comprises:
Dehydration and drying hull (310);
Be arranged on the guide pile (320) that four on (310) four jiaos of the dehydration and drying hulls can only automatic lifting be toppled over;
Be arranged on second hydraulic system (330) at dehydration and drying hull (310) middle part;
By the stirring cabin (340) that pipeline is communicated with spoil hopper (210), be provided with some agitators in this stirring cabin (340);
The medicine machine (350) that is connected with described stirring cabin (340) inlet duct joins medicament in the stirring cabin (340) by pipeline by this medicine machine (350);
The mummification equipment (360) that is connected with described stirring cabin (340) pipeline.
2. the treatment system for the removing of inner city pollution of river bed mud as claimed in claim 1 is characterized in that described reamer tool is the environmental protection screw reamer.
3. the treatment system for the removing of inner city pollution of river bed mud as claimed in claim 2 is characterized in that, is provided with protective cover around the described reamer.
4. the treatment system for the removing of inner city pollution of river bed mud as claimed in claim 1 is characterized in that described thick garbage-cleaning instrument is back hoe (131), and this back hoe (131) has leaking hole.
5. the treatment system of removing for inner city pollution of river bed mud as claimed in claim 1, it is characterized in that, described thick garbage-cleaning instrument is closed hydraulic pressure grab bucket (132), this closed hydraulic pressure grab bucket (132) is clamshell bucket, have two hydraulic jacks, can realize initiatively grasping.
6. the treatment system of removing for inner city pollution of river bed mud as claimed in claim 1, it is characterized in that, described thick garbage-cleaning instrument is pump bucket (133), this pump bucket (133) comprises the rake tool of establishing the spiral destroyer in one, grid is equipped with at rear portion at this destroyer, slush pump is equipped with on top at pump bucket (133), makes pump bucket (133) when rake is got the mud rake be inhaled in the bucket capacity of pump bucket (133).
7. one kind is adopted the treatment system for the removing of inner city pollution of river bed mud as claimed in claim 1 to carry out the treatment process that bed mud is removed, it is characterized in that, this technology comprises silt displacement, bed mud transportation and bed mud treatment step, and wherein, described silt displacement comprises following steps:
Step 1 adopts multi-functional dredger to carry out thick garbage-cleaning, utilizes described thick garbage-cleaning instrument that the thick and stiff rubbish in the bed mud and soft fabric pre-cleaning are handled, and removes thick rubbish;
Step 2, the mud strand is inhaled and is handled, and first hydraulic system (140) the driving reamer tool by multi-functional dredger stirs bed-silt, by conveyance conduit mud is delivered directly to the spoil hopper (230) of mud accumulating ship with the diving sludge pump;
Step 3, adopting mud accumulating ship to carry out homogeneous handles: filter through revolution fine fack (231), the bulky grain foreign material of screening are transported on the barge through belt conveyer (232), and remaining mud stirs through agitator (233) in spoil hopper (230), carries out homogeneous and handles;
Step 4, adopt sludge dewatering mummification ship flocculation sediment: with the mud after step 3 homogeneous is handled, adopt slush pump group (234) through the stirring cabin (340) of tubing pump to sludge dewatering mummification ship, add flocculant by control medicine machine (350) to stirring lining, cabin (340), make mud assemble the formation graininess fast, to guarantee sludge dewatering efficient;
Step 5, processed: make the mud of moisture content about 97% behind the flocculation sediment, the mummification equipment (360) that enters sludge dewatering mummification ship dewaters; Dried mud after the dehydration is transported away supernatant backflow recycling.
8. treatment process as claimed in claim 7 is characterized in that, before described step 1, fixed point desilting groove is set in the river course earlier.
9. treatment process as claimed in claim 7 is characterized in that, before described step 2, and the mud after earlier the thick garbage-cleaning of step 1 being handled, natural sedimentation 3-8 days.
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CN108425398A (en) * 2018-04-03 2018-08-21 广州市昊力工具有限公司 A kind of dredging method
CN110002669A (en) * 2019-03-29 2019-07-12 浙江农林大学 A kind of city heavily contaminated river comprehensive processing method

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