CN106884451A - Ecological dredging and synchronous sludge dewatering integrated construction technique - Google Patents
Ecological dredging and synchronous sludge dewatering integrated construction technique Download PDFInfo
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- CN106884451A CN106884451A CN201710040899.3A CN201710040899A CN106884451A CN 106884451 A CN106884451 A CN 106884451A CN 201710040899 A CN201710040899 A CN 201710040899A CN 106884451 A CN106884451 A CN 106884451A
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- sludge dewatering
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- mud slurries
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- desilting
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
- E02F5/282—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with rotating cutting or digging tools
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/06—Delivery chutes or screening plants or mixing plants mounted on dredgers or excavators
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
A kind of ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, its step are as follows：Preparation of construction, ecological dredging, sludge dewatering, the present invention is stirred by the reamer system in dredger to river bed, forms mud slurries, and mud slurries are delivered to screening plant by the pumping system in dredger by conveyance conduit, sludge dewatering treatment is carried out, the purpose of desilting is realized.The present invention is in work progress, using the form of construction work with water desilting, desilting process need not change water or increase water source, processed by the sludge dewatering of screening plant, supernatant solid content is low, return to river course and do not result in secondary pollution, mud moisture content after dehydration is 75% or so, can directly fill, it is prevented effectively from and reduces and contains the secondary pollution caused to environment during the outward transport of large amount of sewage mud and in subsequent processes, water desilting mode is drained relative to tradition, the destruction to river channel ecology is reduced while effectively treatment mud with water desilting.
Description
Technical field
The present invention relates to channel cleanout field, more particularly to a kind of ecological dredging and synchronous sludge dewatering integrated construction
Technique.
Background technology
With increasing for urban population, the gradual development of industry, substantial amounts of industrial wastewater, sanitary sewage, rubbish directly or
City river is drained into indirectly, the pollutional load of river water is far longer than the self-purification capacity of water body.Pollutant, rubbish are therefore
Largely deposit.Pollutant, rubbish accumulate over a long period (or even pollution accumulation of decades), cause most rivers in city
Flowing water matter is drastically deteriorated (much belong to bad V classes water quality), river bottom mud it is black it is smelly can't bear.What is deposited in bed mud is a large amount of organic and inorganic
Pollutant, causes the drastically reduction of dissolved oxygen in water body, along with partial contamination thing, the toxic action of rubbish, makes river water
In animals and plants mortality (some rivers even become extinct), the river water ecosystem is seriously damaged and even destroys, city
River water body wawter bloom phenomenon, black smelly phenomenon occur again and again.A large amount of depositions of pollutant and rubbish into river course cause river course to become silted up
Drastically thickening for mud layer, strongly reduces river course water capacity, and the controlling flood and draining flooded fields of river course, navigation function are also deep impacted.Therefore, very
A large amount of financial resources, human and material resources are spent every year for the desilting and comprehensive improvement in river course in many areas.
The method of current domestic city river course and lake dredging up mainly uses artificial erosion and deposition：River course two build a dam to enclose
Weir, drains river in dam, and mud is washed away followed by high-pressure hydraulic pump, washes away rear mud and concentrates first and is put in river course
In one section, outward transport is concentrated to process finally by mud of technological requirement, this kind of form of construction work has the disadvantage that：
(1) cofferdam of building a dam is needed：Easily cause bank slope collapse, form of construction work by it is regional or it is climacteric limited, such as exist
Cannot just be constructed during flood season, construction needs comprehensive river course integrated scheduling to coordinate, drainage problem；
(2) construction influences on river course surrounding enviroment：Mud manually water charge and attack it is scattered, be then drawn to tank car shipment, or use
Digging machine is dredged, and surrounding enviroment are polluted, and construction equipment can set to the public relations such as embankment, greenbelt, landscape, road
Apply and damage；
(3) form of construction work：Needs are rushed by a large amount of manpower water, broken up, aspirating sludge construction mode, and efficiency of construction is extremely low,
Workmen has contact surface with mud, there is a large amount of harmful poisonous gases in band water slurry, and work progress is absolutely unsafe；
(4) construction process and management：The substantial amounts of form of construction work by manpower, multiple spot operation is not procedure operating type,
Dredging effect it cannot be guaranteed that, the bad management of constructing；
(5) mud mode is cleared：Clearing mud does not have dehydration, and the mud cleared away is contained after manpower water is rushed
The mud of a large amount of water, is drawn onto in mud of technological requirement and then is transported with pumping, and this kind of mode also has large amount of sewage, and cost of transportation is high；Transport
During existing to the risk (being sent evaporating, emitting, dripping or leaking of liquid or gas phenomenon) of secondary environmental pollution more；The difficulty of subsequent treatment containing water slurry is big,
The risk of secondary pollution environment is high, arbitrarily topples over the underground water source severe contamination that can cause to unload ground and its surrounding enviroment；It is follow-up to become silted up
Mud harmlessness disposing high cost (because also large amount of sewage)；
(6) to ecological destruction：Conventional method drains river, and surrounding environment is polluted, river course, the ecological ring in lake
Border and balance are destroyed by continuation, and its consequence is often that algae breaks out, and fish are dead.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind and need not build a dam cutout, it is not necessary to reduces water level or drains
Water is constructed, direct with water desilting, the adaptable ecological dredging of form of construction work and synchronous sludge dewatering integrated construction technique.
A kind of ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, comprise the following steps：
S1：Preparation of construction, it includes：Determine desilting river course, dredger is placed with desilting river course, placed on desilting riverbank
There is screening plant, the dredger is connected with screening plant by conveyance conduit；
S2：Ecological dredging, it includes：
S201, river bed is stirred by the reamer system in dredger, form the first mud slurries of high concentration；
S202, the first mud slurries are delivered in sludge dewatering processing links by the pumping system in dredger；
S3：Sludge dewatering, it includes：
S301, the first mud slurries obtained after being processed in ecological dredging are delivered to the pre-screening system of the screening plant
In system, the Large material sieve in the first mud slurries is separated；
S302, the second mud slurries obtained after pre-sifted subsystem treatment are delivered to screening plant through stock chest
In dehydration screening system, the dry crude material screening in the second mud slurries is gone out；
S303, the 3rd mud slurries obtained after the dehydration screening system treatment are fallen into pulp storage tank, the 3rd mud
Slurries are transported to cyclone in the effect of Pulp pump, and separating and dehydrating is carried out to the 3rd mud slurries by the cyclone；
S304, through the cyclone process after obtain fine grain silt particle and supernatant, fine grain silt particle delivers to dewatering screen again
Subsystem is further dehydrated, and the dry thin material screening in fine grain silt particle is gone out, and supernatant is directly transmitted back to river course；
S305, the 4th mud slurries obtained through the dehydration screening system treatment are fallen into pulp storage tank, and the described 4th becomes silted up
Slurry liquid repeats the separating and dehydrating work of S303 and S304；
S4：Mud is buried to be filled out, and it includes：Described big material, dry crude material and the dry thin material that will be obtained after dehydration are directly transported
Transport to landfill yard.
Ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, wherein described transfer pipeline one end with it is described
Pumping system is connected, and the other end is connected with the pre-sifted subsystem.
Ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, in wherein step S201, the reamer system
When being stirred to river bed, the chassis propulsion system in the dredger drives the dredger to system, makes dredger in desilting
Moved on river course.
Ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, in wherein step S202, the pumping system
System be delivered to the pre-screening by the transfer pipeline by the first mud slurries in Ha Noi by running at high speed for its inner pump
In system.
Ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, in wherein step S302, the dewatering screen
Scalping vibration screen is provided with subsystem, the scalping vibration screen is divided the dry crude material and mud slurries by vibration
From the dry crude material is stayed on the scalping vibration screen, and the 3rd silt slurry for coming is screened out through the scalping vibration screen
Liquid is fallen into the pulp storage tank.
Ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, in wherein step S303, the cyclone
By high speed rotation separate the 3rd mud slurries under the influence of centrifugal force fine grain silt particle and supernatant in it,
Ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, in wherein step S304, the dewatering screen
Dusting cover vibration screen is additionally provided with subsystem, the dusting cover vibration screen does thin material and the 4th silt slurry by vibration by described
Liquid is separated, and the dry thin material is stayed on the dusting cover vibration screen, and the 4th mud slurries are fallen into the pulp storage tank.
Ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, in wherein step S303, the fine grain
Silt particle is flowed out at the dusting cover vibration screen by the underflow opening of the cyclone, and the supernatant is by the cyclone
Overflow pipe is flowed out in river course.
Ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, in wherein step S3, the pre-screening system
System and dehydration screening system are connected to dreg-accepting hopper, and the big material, dry crude material and dry thin material are transported to
In corresponding dreg-accepting hopper.
Ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique, in wherein step S4, the screening plant
Belt conveyor is connected with, the big material, dry crude material and dry thin material are conveyed by the belt conveyor respectively
Entrucking.
Compared with prior art, advantage for present invention and have the beneficial effect that：
(1) present invention is stirred by the reamer system in dredger to river bed, mud slurries is formed, in dredger
Mud slurries are delivered to screening plant by pumping system by conveyance conduit, carry out sludge dewatering treatment, realize the purpose of desilting,
The present invention in work progress, using the form of construction work with water desilting, it is not necessary to cutout of building a dam, it is not necessary to reduce water level or drain
Water is constructed, and desilting process need not change water or increase water source, and screening plant uses pure physics dewatering type, is added without any chemistry
Medicament, without pollution sources, is processed by the sludge dewatering of screening plant, and supernatant solid content is low, returns to river course and does not result in
Secondary pollution, the mud moisture content after dehydration can be transported directly to landfill factory 65%~75% or so, be prevented effectively from and reduced
Containing the secondary pollution caused to environment during the outward transport of large amount of sewage mud and in subsequent processes, taken out relative to tradition
Solid carbon dioxide desilting mode, the destruction to river channel ecology is reduced with water desilting while effectively treatment mud, also plays water saving
Effect.
(2) present invention realizes stirring mud, slurries conveying and the pipelining of sludge dewatering, and work progress is continuous, high
The carrying out of effect, is easy to construction management, construction equipment mechanization and high degree of automation, substantially reduces workmen's labour intensity,
The security of work progress is improved simultaneously.
Ecological dredging of the invention and synchronous sludge dewatering integrated construction technique are made furtherly below in conjunction with the accompanying drawings
It is bright.
Brief description of the drawings
The step of Fig. 1 is ecological dredging of the present invention and synchronous sludge dewatering integrated construction technique is schemed；
Fig. 2 is ecological dredging of the present invention and synchronous sludge dewatering integrated construction process chart.
Specific embodiment
As shown in Figure 1-2, a kind of ecological dredging of the invention and synchronous sludge dewatering integrated construction technique, wherein, dredge
Reamer system, pumping system and chassis propulsion system are provided with ship, reamer system is used to stir bed-silt, forms high
Concentration mud slurries, pumping system is used for the suction work to mud slurries, and (maximum volume concentration can to process high concentration slurry
Up to 30%), and by major diameter particulate matter (the largest particles thing diameter is up to 82mm), chassis propulsion system is dredged for driving
Ship, makes dredger be moved on river course；
Screening plant includes pre-sifted subsystem and dehydration screening system, and pre-sifted subsystem and dehydration screening system are connected respectively
There is dreg-accepting hopper, pre-sifted subsystem is used to sieve the material more than 15mm, and dehydration screening system is used to sieve the material less than 15mm；
Comprise the following steps：
S1：Preparation of construction, it includes：Determine desilting river course, dredger is placed with desilting river course, placed on desilting riverbank
There is screening plant, dredger is connected with screening plant by conveyance conduit, transfer pipeline one end is connected with pumping system, the other end
It is connected with pre-sifted subsystem；
S2：Ecological dredging, it includes：
S201, river bed is stirred by the reamer system in dredger, form the first mud slurries of high concentration, twisted
When being stirred to river bed, the chassis propulsion system in dredger drives dredger to knife system, makes dredger in desilting river course
Upper movement, makes desilting route cover whole reach of clearing sediment, so as to reach the purpose of thorough desilting；
S202, the first mud slurries are delivered in sludge dewatering processing links by the pumping system in dredger, pump
System is sent be delivered to pre-sifted subsystem by transfer pipeline by the first mud slurries in Ha Noi by run at high speed for its inner pump
In；
S3：Sludge dewatering, it includes：
S301, the first mud slurries obtained after being processed in ecological dredging are delivered to the pre-sifted subsystem of screening plant
In, will be separated more than the Large material sieve of 15mm in the first mud slurries, and deliver to dreg-accepting hopper；
S302, the second mud slurries obtained after the treatment of pre-sifted subsystem are delivered to the dehydration of screening plant through stock chest
In screening system, scalping vibration screen is provided with dehydration screening system, scalping vibration screen is by vibrating the second mud slurries
In dry crude material screening separated with mud slurries, it is dry crude during dry crude material is stayed on scalping vibration screen and delivers to dreg-accepting hopper
The particle diameter of material screens out the 3rd mud slurries for coming and falls into pulp storage tank between 3~15mm, through scalping vibration screen；
S303, the 3rd mud slurries obtained after dehydration screening system treatment are fallen into pulp storage tank, the 3rd mud slurries
Cyclone is transported in the effect of Pulp pump, cyclone is by rotating the 3rd mud slurries at a high speed under the influence of centrifugal force
Carry out separating and dehydrating；
S304, processed through cyclone after separate fine grain silt particle in the 3rd mud slurries and supernatant, obtain particulate
Footpath silt particle and supernatant, fine grain silt particle are delivered to dehydration screening system and are further dehydrated again, are also set in dehydration screening system
There is dusting cover vibration screen, fine grain silt particle is flowed out at dusting cover vibration screen by the underflow opening of cyclone, dusting cover vibration screen
Dry thin material is separated with the 4th mud slurries by vibrating, is done thin material and is stayed on dusting cover vibration screen and deliver to dreg-accepting hopper
In, the particle diameter of thin material is done within 3mm, the 4th mud slurries are fallen into pulp storage tank, and the solid content of supernatant is low, can be passed through
The overflow pipe outflow of cyclone is directly transmitted back to after having processed in desilting river course, does not result in secondary pollution；
S305, the 4th mud slurries obtained through being dehydrated screening system treatment are fallen into pulp storage tank, the 4th mud slurries weight
The separating and dehydrating work of multiple S303 and S304, until by separation of solid and liquid in mud slurries, obtaining accessible product；
S4：Mud is buried to be filled out, and it includes：Screening plant is connected with belt conveyor, big material, dry crude material and dry thin thing
Material conveys entrucking by belt conveyor respectively, and directly transports to landfill yard, realizes the simple classification of mud and slag charge, is
Subsequently to mud and the basis of slag charge harmless treatment and recycling.
Based on above-mentioned construction technology, PLC controls system is connected between two construction procedures of ecological dredging and sludge dewatering
System, realizes monitoring and control function, by the aqueous amount of sludge of ecological dredging resume module, is passed signal by PLC control system
Sludge dewatering module is passed, the flow of Pulp pump, is allowed to and mud slurry flow in PLC control system adjustment sludge dewatering module
Match, and then realize synchronous immediately dehydration decrement treatment of the screening plant to mud slurries.
PLC control system mainly completes function to be included：(1) bed-silt desilting situation real-time video monitoring；(2) aqueous silt
Mudflow amount is controlled；(3) synchronous sludge dewatering decrement treatment amount control；(4) bed-silt desilting region and desilting amount in real time and are gone through
History data record and analysis.
The present invention is stirred by the reamer system in dredger to river bed, forms mud slurries, the pump in dredger
Send system that mud slurries are delivered into screening plant by conveyance conduit, carry out sludge dewatering treatment, realize the purpose of desilting, this
Invention in work progress, using the form of construction work with water desilting, it is not necessary to cutout of building a dam, it is not necessary to reduce water level or drain water
Construction, desilting process need not change water or increase water source, and screening plant uses pure physics dewatering type, is added without any chemical drugs
Agent, without pollution sources, is processed by the sludge dewatering of screening plant, and supernatant solid content is low, returns to river course and does not result in two
Secondary pollution, the mud moisture content after dehydration can be transported directly to landfill factory 65%~75% or so, be prevented effectively from and reduced
Containing the secondary pollution caused to environment during the outward transport of large amount of sewage mud and in subsequent processes, drained relative to tradition
Water desilting mode, the destruction to river channel ecology is reduced with water desilting while effectively treatment mud, also plays the work of water saving
With.
Dredger of the present invention aspirates the mud slurries for coming up and is delivered directly to screening by conveyance conduit by pumping system
Device carries out dehydration minimizing treatment, and environment will not be polluted in work progress.
The present invention while sludge dewatering, is realized by the pre-sifted subsystem in screening plant and dehydration screening system
The simple classification of mud and slag charge, according to mud and slag charge particle size, may separate out the slag charge more than 15mm, particle diameter and is more than
The mud and slag charge of the mud and slag charge of 3mm, particle diameter less than 3mm, and can by belt conveyor system, entrucking is cleared respectively respectively,
The simple classification of mud and slag charge is the basis of follow-up mud and slag charge harmless treatment and recycling.
The present invention realizes stirring mud, slurries conveying and the pipelining of sludge dewatering, and work progress is continuous, efficient
Carry out, be easy to construction management, construction equipment mechanization and high degree of automation, substantially reduce workmen's labour intensity, while
Improve the security of work progress.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to model of the invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art are to technical side of the invention
Various modifications and improvement that case is made, all should fall into the protection domain of claims of the present invention determination.
Claims (10)
1. a kind of ecological dredging and synchronous sludge dewatering integrated construction technique, it is characterised in that：Comprise the following steps：
S1：Preparation of construction, it includes：Determine desilting river course, dredger is placed with desilting river course, sieve is placed with desilting riverbank
Separating device, the dredger is connected with screening plant by conveyance conduit；
S2：Ecological dredging, it includes：
S201, river bed is stirred by the reamer system in dredger, form the first mud slurries of high concentration；
S202, the first mud slurries are delivered in sludge dewatering processing links by the pumping system in dredger；
S3：Sludge dewatering, it includes：
S301, the first mud slurries obtained after being processed in ecological dredging are delivered to the pre-sifted subsystem of the screening plant
In, the Large material sieve in the first mud slurries is separated；
S302, the second mud slurries obtained after pre-sifted subsystem treatment are delivered to the dehydration of screening plant through stock chest
In screening system, the dry crude material screening in the second mud slurries is gone out；
S303, the 3rd mud slurries obtained after the dehydration screening system treatment are fallen into pulp storage tank, the 3rd mud slurries
Cyclone is transported in the effect of Pulp pump, separating and dehydrating is carried out to the 3rd mud slurries by the cyclone；
S304, processed through the cyclone after obtain fine grain silt particle and supernatant, fine grain silt particle delivers to dehydration screening system again
System is further dehydrated, and the dry thin material screening in fine grain silt particle is gone out, and supernatant is directly transmitted back to river course；
S305, the 4th mud slurries obtained through the dehydration screening system treatment are fallen into pulp storage tank, the 4th silt slurry
Liquid repeats the separating and dehydrating work of S303 and S304；
S4：Mud is buried to be filled out, and it includes：Described big material, dry crude material and the dry thin material that will be obtained after dehydration are directly transported extremely
Landfill yard.
2. ecological dredging according to claim 1 and synchronous sludge dewatering integrated construction technique, it is characterised in that：It is described
Transfer pipeline one end is connected with the pumping system, and the other end is connected with the pre-sifted subsystem.
3. ecological dredging according to claim 1 and synchronous sludge dewatering integrated construction technique, it is characterised in that：Step
In S201, the reamer system is dredged when being stirred to river bed described in the chassis propulsion system driving in the dredger
Ship, makes dredger be moved on desilting river course.
4. ecological dredging according to claim 2 and synchronous sludge dewatering integrated construction technique, it is characterised in that：Step
In S202, the pumping system pass through the transfer pipeline by the first mud slurries in Ha Noi by running at high speed for its inner pump
It is delivered in the pre-sifted subsystem.
5. ecological dredging according to claim 1 and synchronous sludge dewatering integrated construction technique, it is characterised in that：Step
In S302, scalping vibration screen is provided with the dehydration screening system, the scalping vibration screen will be described dry crude by vibration
Material is separated with mud slurries, and the dry crude material is stayed on the scalping vibration screen, is sieved through the scalping vibration screen
The 3rd mud slurries out are fallen into the pulp storage tank.
6. ecological dredging according to claim 5 and synchronous sludge dewatering integrated construction technique, it is characterised in that：Step
In S303, the 3rd mud slurries are made the cyclone fine grain silt particle in it under the influence of centrifugal force by rotation at a high speed
Separated with supernatant.
7. ecological dredging according to claim 6 and synchronous sludge dewatering integrated construction technique, it is characterised in that：Step
In S304, dusting cover vibration screen is additionally provided with the dehydration screening system, the dusting cover vibration screen will be described dry by vibration
Thin material is separated with the 4th mud slurries, and the dry thin material is stayed on the dusting cover vibration screen, the 4th mud slurries
Fall into the pulp storage tank.
8. ecological dredging according to claim 7 and synchronous sludge dewatering integrated construction technique, it is characterised in that：Step
In S303, the fine grain silt particle is flowed out at the dusting cover vibration screen by the underflow opening of the cyclone, the supernatant
Liquid is flowed out in river course by the overflow pipe of the cyclone.
9. ecological dredging according to claim 1 and synchronous sludge dewatering integrated construction technique, it is characterised in that：Step
In S3, the pre-sifted subsystem and dehydration screening system are connected to dreg-accepting hopper, the big material, dry crude material and dry thin thing
Material is transported in corresponding dreg-accepting hopper.
10. ecological dredging according to claim 9 and synchronous sludge dewatering integrated construction technique, it is characterised in that：Step
In rapid S4, the screening plant is connected with belt conveyor, and the big material, dry crude material and dry thin material pass through institute respectively
State belt conveyor conveying entrucking.
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| CN111606529A (en) * | 2020-06-03 | 2020-09-01 | 西华大学 | Water conservancy ecological dredging and dirt removing and dewatering treatment method |
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Application publication date: 20170623 |