CN206428140U - Urban pipe network sludge reduction processing unit - Google Patents

Abstract

The utility model discloses an urban pipe network sludge reduction treatment device. Among them, the mobile urban pipe network sludge reduction treatment device, the fine material separation screen is located above the coarse material separation screen, and the fine material separation screen and the coarse material separation screen overlap up and down; the coarse material separation screen is equipped with a mud inlet and a coarse material separation screen. The outlet, and below the coarse material separation screen is a slurry storage tank; the slurry storage tank is connected to the cyclone separator through a high-pressure sewage suction pump; the cyclone separator is placed above the fine material separation screen, and the separated liquid enters the middle storage tank. The separated solids fall from the bottom of the cyclone separator into the fine material separation sieve; the fine material separation sieve is equipped with a fine material outlet, and the water that passes through the fine material separation sieve falls into the coarse material separation sieve below and then enters the slurry storage tank; the middle storage tank is provided with a liquid outlet; the middle storage tank communicates with the slurry storage tank through a float type liquid level switch. According to the processing principle of from coarse to fine and solid-liquid separation, the utility model has compact structure, high efficiency of processing flow, and realizes fully automatic processing of urban pipe network sludge.

Description

Urban pipe network sludge reduction treatment device

technical field

The utility model relates to a mobile and fixed urban pipe network sludge reduction treatment device.

Background technique

According to the survey, my country's existing municipal daily maintenance still uses decades of tradition. In addition to traditional bamboo slices, colanders, manual twisting, and human lifting, maintenance workers often have frequent accidents in daily maintenance in major cities across the country. Sprinkling, dripping, and natural drying cause secondary pollution to the environment. Underground sewage sludge with high water content seriously pollutes groundwater sources. With the increase of labor costs, the existing maintenance mode has overwhelmed the cost of municipal management. "Looking at the sea in the city" has become a scene in many cities. Bring serious losses to the national economy.

Pipe network sludge refers to the sediments that are dredged up during the maintenance and dredging of urban underground drainage pipes. The sediment in the pipeline can easily cause poor drainage in the city, and it is easy to cause blockage to the forebay pump when it is transported to the sewage treatment plant. The rainwater enters the river and causes water pollution.

The current outdated methods of sludge collection, transportation, and disposal are becoming less and less suitable for the construction of ecological civilization. Therefore, it is necessary to explore a reasonable sludge treatment and disposal scheme. If it is not cleaned up in time, it will easily cause poor drainage, water accumulation and sewage overflow, and the rainwater will enter the river and cause water pollution. Under the current situation that the domestic urban drainage pipe network has insufficient drainage capacity, if the sewage sludge is not cleaned up in time, the impact of urban waterlogging disasters will be aggravated. "Looking at the sea in the city" is a long-term urban morbidity caused by "emphasizing the ground and neglecting the underground".

Due to the blockage of the pipe network caused by the heavy rain brought by the extreme climate, the drainage is not smooth. Outdated clearing methods. High-intensity labor. Poor working environment is the main culprit of pipe network blockage.

The research on sludge treatment equipment in my country mainly focuses on the sludge of sewage treatment plants, mainly including vacuum filtration dehydration, pressure filtration dehydration, centrifugal dehydration, thermal drying, and natural drying. As for the treatment of pipe network sludge, domestic research is rarely involved.

There is no special equipment for dredging underground pipe network in my country. The development of relevant mechanical equipment is still in the initial stage, and the existing manual work. And the semi-mechanized operation methods cannot meet the pressure on the underground pipe network due to urban expansion and population explosion. The debts caused by the long-term "emphasis on the ground and light on the ground", "the city looks at the sea" is a portrayal of the current reality.

Since the sludge treated by urban sewage plants is homogeneous, it can be dehydrated by centrifuges, belt machine filter presses, plate-and-frame machines, etc. However, the sludge in urban drainage pipes has complex components, containing a large amount of domestic garbage, sand, The slag wears out the conventional dehydration equipment very seriously, and even cannot be dehydrated at all. At least necessary pretreatment methods must be supplemented, which will inevitably increase a lot of treatment costs. Make limited financial funds exhausted.

If the thermal drying treatment is a treatment method with high energy consumption, its economy is extremely limited, and a large amount of toxic and harmful gases are produced during the operation process, which seriously affects the air quality of the surrounding living environment.

If the natural air-drying treatment takes up a large area, and the environmental control is relatively difficult, it is not suitable to be built in an urban area. The transfer cost of the sludge is high, and the shoveling of the dried sludge is also difficult. Dust and rain weather seriously affect the surrounding environment,

Since the composition and characteristics of drainage pipe sludge and urban sewage plant sludge are quite different, it is impossible to copy the treatment method.

At present, the traditional treatment and disposal method of pipe network ditch sludge is mainly manual clearing, which is directly cleared and transported without dehydration, and is usually buried in landfill.

Its workflow is as follows:

1) The cleaned sludge and water are directly piled up in the open space, dried and transported away together with the garbage;

2) Outsourced to a clearing and transportation company, the final way out is: transported to rural depressions for dumping or mixed with construction debris for landfill;

3) Transport to drying yard or sludge storage point, and transport to landfill after natural drying.

The disadvantages of the traditional treatment and disposal methods of pipe network ditch sludge are as follows:

1. High transportation cost - high transportation cost without dehydration;

2. Serious secondary pollution - due to the high moisture content of the sludge at the cleaning place (about 85% on average), direct cleaning and transportation will affect the normal operation of the landfill site, and if it is naturally dried, it will have a bad impact on the surrounding environment;

3. Low work efficiency - the sewage pumping station needs many people to go down to the well and manually clear it;

4. Poor safety—there are safety problems for the construction personnel to go down the well;

5. High cost of landfill - the sludge with sewage cannot be landfilled without treatment. The cost of sludge dehydration and landfill is high, and the landfill occupies a large area.

Contents of the invention

The technical problem to be solved by the utility model is to provide a mobile urban pipe network sludge reduction treatment device.

The technical problem to be solved by the utility model is to provide a fixed urban pipe network sludge reduction treatment device.

For the mobile urban pipe network sludge reduction treatment device, the technical solution adopted by the utility model is to include a coarse material separation screen, a fine material separation screen, a cyclone separator, a first slurry storage tank, a high-pressure sewage suction pump, storage tank;

The fine material separation sieve and the coarse material separation sieve are overlapped up and down, and the fine material separation sieve is located above the coarse material separation sieve;

The coarse material separation screen is equipped with a mud inlet and a coarse material outlet, and the sludge enters the coarse material separation screen from the mud inlet, and the sieved coarse material dry residue is discharged from the coarse material outlet, and the slurry that passes through the coarse material separation screen is discharged. into the first slurry storage tank placed under the coarse material separation screen;

The upper opening of the first slurry storage tank is open and all the slurry that has passed through the coarse material separation screen is received. The bottom of the first slurry storage tank is bucket-shaped, and the bottom is provided with an outlet and communicated with the cyclone separator through a high-pressure sewage suction pump;

The cyclone separator is placed above the fine material separation screen. The cyclone separator separates the sludge from solid and liquid with high-speed cyclone. The separated liquid is introduced into the middle storage tank, and the separated solid falls from the bottom of the cyclone separator. into the fine material separation sieve;

The fine material separation sieve is equipped with a fine material outlet, and the sieved fine material dry slag is discharged from the fine material outlet, and the water liquid that passes through the fine material separation sieve falls into the coarse material separation sieve below and then enters the first slurry storage tank;

The position of the middle storage tank is higher than the first slurry storage tank, and there is a liquid channel between the middle storage tank and the first slurry storage tank; the float type liquid level switch is used to control the liquid level in the slurry storage tank, and the The high liquid level is closed and the low liquid level is connected to control the on or off of the liquid channel between the middle storage tank and the first slurry storage tank;

The middle storage tank is also provided with a liquid outlet for leading the liquid out.

As preferred:

The mesh aperture of the coarse material separating sieve is 3mm; the mesh aperture of the fine material separating sieve is 0.3mm.

The coarse material separating screen and the fine material separating screen are vibrating screens.

The high-pressure sewage suction pump adopts a vacuum wear-resistant sewage suction pump with a working pressure of 0.2 MPa.

There are high-pressure hydraulic flushing pipes above the coarse material separation screen and the fine material separation screen.

For the fixed urban pipe network sludge reduction treatment device, the technical solution adopted by the utility model is to include a pre-separation screen, a second slurry storage tank, a slurry pump, a coarse material separation screen, a fine material separation screen, a cyclone Separator, first slurry storage tank, high-pressure sewage suction pump, intermediate storage tank;

The pre-separation screen is placed above the second slurry storage tank, the upper opening of the second slurry storage tank is open and all the slurry passing through the screen of the pre-separation screen is received, the bottom of the second slurry storage tank is bucket-shaped, and the bottom is provided with an outlet and passes through The slurry pump is connected with the slurry inlet of the coarse material separating screen;

The fine material separation sieve and the coarse material separation sieve are overlapped up and down, and the fine material separation sieve is located above the coarse material separation sieve;

The coarse material separation screen is equipped with a mud inlet and a coarse material outlet, and the sludge enters the coarse material separation screen from the mud inlet, and the sieved coarse material dry residue is discharged from the coarse material outlet, and the slurry that passes through the coarse material separation screen is discharged. into the first slurry storage tank placed under the coarse material separation screen;

The upper opening of the first slurry storage tank is open and all the slurry that has passed through the coarse material separation screen is received. The bottom of the first slurry storage tank is bucket-shaped, and the bottom is provided with an outlet and communicated with the cyclone separator through a high-pressure sewage suction pump;

The cyclone separator is placed above the fine material separation screen. The cyclone separator separates the sludge from solid and liquid with high-speed cyclone. The separated liquid is introduced into the middle storage tank, and the separated solid falls from the bottom of the cyclone separator. into the fine material separation sieve;

The fine material separation sieve is equipped with a fine material outlet, and the sieved fine material dry slag is discharged from the fine material outlet, and the water liquid that passes through the fine material separation sieve falls into the coarse material separation sieve below and then enters the first slurry storage tank;

The position of the middle storage tank is higher than the first slurry storage tank, and there is a liquid channel between the middle storage tank and the first slurry storage tank; the float type liquid level switch is used to control the liquid level in the slurry storage tank, and the The high liquid level is closed and the low liquid level is connected to control the on or off of the liquid channel between the middle storage tank and the first slurry storage tank;

The middle storage tank is also provided with a liquid outlet for leading the liquid out.

As preferred:

The screen aperture of the pre-separation sieve is 50 mm; the screen aperture of the coarse material separation screen is 3 mm; the screen aperture of the fine material separation screen is 0.3 mm.

Coarse material separator, fine material separator and pre-separator are vibrating screens.

The high-pressure sewage suction pump adopts a vacuum wear-resistant sewage suction pump with a working pressure of 0.2 MPa; the slurry pump is an atmospheric centrifugal pump.

There are high-pressure hydraulic flushing pipes above the coarse material separation screen, fine material separation screen and pre-separation screen.

The beneficial effects of the utility model are:

Adopting the treatment principle of from coarse to fine and solid-liquid separation, with compact structure and high-efficiency treatment process, it realizes the fully automatic treatment of urban pipe network sludge. This device has ended the blank of domestic municipal maintenance without professional equipment, and created a good working environment for the vast number of municipal maintenance workers. It finds a way out for the garbage, prolongs the service life of the landfill, reduces the municipal maintenance cost, reduces the construction work intensity, improves the construction work environment, and improves the construction efficiency.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is a structural schematic diagram (mobile) of an embodiment of the urban pipe network sludge reduction treatment device of the present invention.

Fig. 2 is a schematic structural view (fixed type) of an embodiment of the urban pipe network sludge reduction treatment device of the present invention.

Fig. 3 is a flowchart of an embodiment of the urban pipe network sludge reduction treatment device of the present invention.

Marks in the figure: 1-slurry inlet, 2-coarse material separation sieve, 3-fine material separation sieve, 4-fine material outlet, 5-coarse material outlet, 6-first slurry storage tank, 7-high pressure sewage suction pump, 8-Water outlet, 9-Medium storage tank, 10-Cyclone separator, 11-Slurry pump, 12-Second slurry storage tank, 13-Pre-screen outlet, 14-Pre-separator, 15-Pre-screen feed inlet.

detailed description

Example 1

Figure 1 is a mobile or vehicle-mounted urban pipe network sludge reduction treatment device, which consists of a coarse material separation screen 2, a fine material separation screen 3, a first slurry storage tank 6, a high-pressure sewage suction pump 7, and an intermediate storage tank. Box 9 and cyclone separator 10 are composed.

Both the coarse material separating sieve 2 and the fine material separating sieve 3 are vibration sieves which are overlapped up and down, and the coarse material separating sieve 2 is arranged below the fine material separating sieve 3 .

Below the coarse material separating screen 2, a first slurry storage tank 6 with an open top and a bucket-shaped bottom is arranged.

A high-pressure sewage suction pump 7 is provided outside the first slurry storage tank 6, and the outlet at the bottom of the first slurry storage tank is connected to the cyclone separator 10 through the slurry pump.

The high-pressure sewage suction pump is a self-priming centrifugal pump with a working pressure of 0.2 MPa. The purpose of using a high-pressure sewage suction pump is to drive the slurry with a certain pressure into the cyclone separator 10 to make it generate a swirl.

The cyclone separator is a cylinder with a conical shape, and its function is to separate the coarse particles in the slurry from the liquid containing fine particles. It works as follows:

When the mud enters the cylinder through the slurry feeding pipe along the tangential direction at a certain pressure (generally 0.2 MPa) and flow rate (about 5-12 m/s) with a high-pressure sewage suction pump, the mud is immediately on the inner wall of the cyclone separator cylinder. Restricted rotary motion. The mud has two different movement directions inside the cyclone separator, and the outer mud near the wall of the cylinder moves downward during the rotation, which is called the outer spiral flow. The mud in the inner layer near the center of the cylinder flows upward during the rotation, which is called the inner spiral flow. The inner spiral flow and the outer spiral flow are consistent in the direction of rotation. Under the action of centrifugal force, the solid particles in the mud are thrown to the vicinity of the cylinder wall, and are discharged from the bottom of the cone with the outer spiral flow, becoming slag (ie dry material). The fine particles stay in the inner spiral flow due to the small centrifugal force, and finally are discharged from the overflow pipe to become overflow.

The cyclone separator 10 is arranged in an inclined manner, and the slag outlet of the cone bottom of the cyclone separator is located above the fine material separation screen 3, and the liquid of the cyclone separator is introduced into the middle storage tank located on the side of the first slurry storage tank 9, and the position of the middle storage tank is higher than the first slurry storage tank.

The middle storage tank is provided with a water outlet and a connecting channel leading to the first slurry storage tank, and a float type liquid level switch is used to control the connection channel leading to the first slurry storage tank to be on or off.

The whole equipment is basically set according to the natural flow direction of the treated sludge, from top to bottom, from coarse to fine.

This embodiment adopts the overall cabinet design, and a cubic cabinet is used to cover the whole device inside, and the coarse material outlet and the fine material outlet are arranged on one side of the cabinet, and the water liquid outlet can be connected to a pipeline for discharge.

The cabinet design of this embodiment is very suitable for making a mobile or vehicle-mounted sludge treatment station. For example, a vehicle-mounted sludge treatment device is placed on the chassis of a car, which can be easily moved to the place where sludge treatment is required. The place.

Example 2

Fig. 2 is a fixed urban pipe network sludge reduction treatment device, which is based on the mobile treatment device in Example 1, and corresponding equipment required for pretreatment is added. The pretreatment equipment is composed of a slurry pump 11 , a second slurry storage tank 12 and a pre-separation screen 14 .

The pre-separation screen 14 is a vibrating screen, and a second slurry storage tank 12 is arranged below it. The second slurry storage tank 12 has the same structure as the first slurry storage tank 6 of the subsequent process, and is also an open upper mouth and a bucket-shaped bottom. The bottom of the second slurry storage tank 12 communicates with the slurry inlet 1 of the coarse material separating screen through a slurry pump 11 .

The slurry pump 11 adopts a conventional pressure centrifugal pump.

Since the corresponding equipment required for pretreatment is added in this embodiment, the number of equipment is relatively large, so it is made into a fixed sludge treatment device. That is to say, the above-mentioned equipment is fixedly installed in a suitable room. This kind of fixed sludge treatment device is more suitable for dealing with pipe network sludge that contains a lot of debris and is uneven in size. For example, it can be used as a fixed sludge treatment station. , built near a sewage pumping station that contains a large amount of sludge and various sundries.

In addition, according to the properties of the sludge to be treated, corresponding dredging and suction equipment such as direct suction, cutter suction or raking suction dredging ships can be added. The specific selection is as follows:

1. For sand and mud with good fluidity, choose a ship-mounted pump or a shore-based pump with a straight suction pipe head to suck the sludge, and then transport it to the drying and screening system through the pipeline;

2. For the sludge with poor fluidity and low hardness, choose a raking suction dredging ship. The raking suction head has a large working area, high working efficiency and fast suction;

3. For sludge with poor fluidity and high hardness, choose a cutter suction dredging ship. The reamer head works to twist and disperse the hard sludge so that it can flow effectively, and the equipment adopts horizontal fan construction , The working range is large.

Therefore, the urban pipe network sludge reduction treatment device of this embodiment can flexibly increase or decrease the corresponding treatment equipment according to the properties of the treated sludge while keeping the core treatment equipment unchanged, so that the device Has good adaptability.

As shown in Figure 3, the workflow of the device is as follows:

1. The sludge enters the pre-separation screen 14 from the pre-screening inlet 15 by the sewage suction pump. The screen aperture of the pre-separating screen is 50 mm, and the large debris with a diameter greater than 50 mm can be screened out and discharged from the pre-screening outlet 13. The debris and slurry with a diameter less than 50 mm enter the second slurry storage tank 12 below through the screen, and then are sucked into the coarse material separation screen through the slurry pump 11 . If there are not many large pieces of debris in the sludge, you can skip this pretreatment process and directly enter the next rough screening process.

2. There is a mud inlet 1 at one end of the coarse material separation sieve, and the sludge is sucked into the coarse material separation sieve by the slurry pump 11. Since the mesh aperture of the coarse material separation sieve is 3mm, the blocky debris with a diameter greater than 3mm The material is discharged from the coarse material outlet 5 of the coarse material separating sieve, while the debris and slurry with a diameter less than 3mm pass through the screen and flow into the first slurry storage tank 6 placed under the coarse material separating sieve.

3. The first slurry storage tank is bucket-shaped, and the bottom outlet of the tank is connected to the high-pressure sewage suction pump 7. The high-pressure sewage suction pump pumps the slurry in the first slurry storage tank 6 to the cyclone separation above the fine material separation screen 3. In the device 10, the slurry is automatically separated into a slag material with a very low moisture content (that is, a dry material) and a water liquid with a very low solid content after passing through the cyclone separator, and the separated water liquid is led back to the source or the medium through the pipeline. The separated slag falls into the fine material separating screen 3 from the bottom of the cyclone separator.

4. The slag separated by the cyclone is vibrated and separated by the fine material separation sieve. The mesh aperture of the fine material separation sieve is 0.3mm, and the fine slag (ie dry material) larger than 0.3mm is discharged from the fine material outlet 4, and the water liquid Backflow down into the first slurry storage tank 6 .

5. The middle storage tank 9 is respectively provided with a discharge pipeline and a channel leading to the first slurry storage tank 6. The water separated by the cyclone separator enters the middle storage tank and is discharged through the discharge pipeline.

The effect of the storage tank in setting is that the water liquid in the first slurry storage tank 6 can be replenished in time. Since the position of the middle storage tank 9 is set higher than the first slurry storage tank, the water in the middle storage tank 9 can flow into the first slurry storage tank 6 through the passage. Specifically, a float-type liquid level switch is used to control the on-off of the passage, so as to realize timely replenishment of the first slurry storage tank. If the liquid level of the first slurry storage tank is low, the float type liquid level switch is automatically turned on, and the liquid part of the middle storage tank flows to the first slurry storage tank to replenish the slurry that has fallen from the first slurry storage tank. When the liquid level reaches the high level That is to stop replenishing liquid, to meet the requirements of the liquid level in the first slurry storage tank when the high-pressure sewage suction pump is working.

The above-mentioned urban pipe network sludge reduction treatment device is characterized by the adoption of the principle of reduction treatment in stages from coarse to fine, and the specific classification is as follows:

1. Output from pre-screening:

It mainly includes stones, long fibers, plastic bags, leaves and other slag with particle size over 50mm. Through washing on the sieve and pre-sieving vibration screening, the moisture content of this part of the slag is low, and the content of organic matter attached to the solid is low. Subsequent waste sorting or direct landfilling can be carried out.

2. Output from coarse sieve:

It mainly includes stones, sand, plastic bags, fibers and other slag with a particle size of 3mm to 50mm. After flushing on the sieve and vibrating screening of the coarse sieve, the moisture content of this part of the slag is low, and the content of organic matter attached to the solid is low. Subsequent waste sorting or direct landfilling can be carried out. All kinds of sticky matter on the surface of the material are removed.

3. Output from fine sieve:

It mainly contains slag with a particle size of 0.3mm to 3mm. After flushing on the sieve and vibrating screening with a fine sieve, the moisture content of this part of the slag is low, and the organic matter content on the solid is reduced, which is convenient for later reuse (such as building material filling). Treated with a wash-peel process. The organic matter content is greatly reduced. Reserve for resource utilization.

4. Output from cyclone:

After cyclone treatment, the solid particle content of the overflow liquid is greatly reduced, which improves the efficiency of subsequent sewage treatment. No loss of carbon source, no new environmental burden.

This device has the following characteristics:

1. The selected centrifugal pump has a high degree of generalization, reliable operation, convenient assembly, disassembly and maintenance, and has thick wear-bearing parts, which is suitable for long-term transportation of strong abrasive and high-concentration slurry.

2. The selected hydrocyclone is customized according to the needs, the separation effect is good, the material is wear-resistant, corrosion-resistant, light in weight, and is suitable for long-term maintenance-free use under harsh working conditions.

3. The float type liquid level switch is used as the automatic liquid level balance device of the equipment, which can keep the liquid level of the slurry tank stable, realize repeated mud treatment, further improve the purification quality, realize unattended operation, and start and stop with one key.

After being treated by the urban pipe network sludge reduction treatment device of this embodiment, the moisture content of the sludge is reduced from 75% to below 40%, so that the daily sludge transportation volume is reduced to one tenth of the original, at least saving about 90% of the transportation fee and handling fee, and the total power of this set of mechanical equipment is about 45KW, which is an energy-saving and environmental protection technical project. According to the on-site trial operation, after the eight sludge tanks collected by the original pumping station are treated by the sludge reduction process equipment, only the sludge in one sludge tank remains.

According to actual operation conditions, the urban pipe network sludge reduction treatment device of this embodiment can achieve the following technical effects:

1. Realize sludge reduction, and reduce the amount of sludge manually cleared by more than 85%;

2. Improved safety, low labor intensity, high work efficiency, 8-10 times higher than traditional manual cleaning efficiency.

3. It will no longer cause secondary environmental pollution, and the moisture content of the treated sludge is lower than 45%;

4. The transportation cost is greatly reduced, and the cleaning and transportation is reduced from 8 to 10 vehicles to 1 vehicle;

5. The cost of landfill is reduced, and the treated sludge can be directly sent to the landfill without drying treatment.

6. The separated sediment can be reused as a resource, and sand, gravel and sundries of different particle sizes can be separated for classified treatment.

7. The treatment process is a purely physical process without adding chemicals, so there is no new environmental burden.

The technical performance of the urban pipe network sludge reduction treatment device in this embodiment is as follows:

1) The equipment can adapt to the reduction and dehydration treatment of most pipe network sludge. (Including manual cleaning. Pumping materials).

2) The equipment can realize the preliminary sorting of dewatered sludge according to particle size, which can be divided into three particle sizes >50mm, 3mm~50mm, and <3mm. The first two kinds are convenient for physical combination of landfill.

3) The particle size of sewage particles after sludge treatment: ≤45μm.

4) Equipment operation noise (clear water) ≦ 85dB.

5) The ratio of BOD and COD in the discharged sewage after treatment is greater than 0.3, which is convenient for the sewage treatment plant to carry out effective biochemical treatment.

6) The generated waste gas is treated and discharged up to standard.

The embodiments of the utility model described above do not constitute a limitation to the protection scope of the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (10)

1. portable urban pipe network sludge reduction processing unit, it is characterised in that：Including coarse fodder bolter, fines bolter, Cyclone separator, the first slurry storage tank, high pressure soil pick-up pump, middle storage tank；

Overlapped above and below the fines bolter, coarse fodder bolter, and fines bolter is located at the top of coarse fodder bolter；

The coarse fodder bolter is exported provided with mud inlet and coarse fodder, and sludge enters coarse fodder bolter, screening from mud inlet The dry slag of coarse fodder gone out is exported from coarse fodder and discharged, and is then fallen into and is placed in below coarse fodder bolter by the slurries of coarse fodder bolter screen cloth First slurry storage tank；

The suitable for reading of first slurry storage tank opens wide and all receives the slurries by coarse fodder bolter screen cloth, the bottom of the first slurry storage tank Portion is bucket-shaped, and bottom with cyclone separator is connected provided with outlet and by high pressure soil pick-up pump；

The cyclone separator is placed in the top of fines bolter, and sludge is carried out solid-liquid point by cyclone separator with high-speed rotational From storage tank during the liquid after separation is introduced into, the solid after separation then falls into fines bolter from cyclone separator bottom；

The fines bolter is exported provided with fines, and the dry slag of fines sifted out is exported from fines and discharged, and is sieved by fines bolter The coarse fodder bolter that the aqueous of net then falls into lower section enters back into the first slurry storage tank；

The position of the middle storage tank, which is higher than between the first slurry storage tank, and middle storage tank and the first slurry storage tank, is provided with fluid passage；Using Float type level switch is controlled according to the height that liquid level is controlled in slurry storage tank, and by high level closing in the way of low liquid level connection The on-off of fluid passage in system between storage tank and the first slurry storage tank；

The middle storage tank is additionally provided with the liquid outlet for drawing liquid.

2. portable urban pipe network sludge reduction processing unit according to claim 1, it is characterised in that：The coarse fodder The mesh size of bolter is 3mm；The mesh size of the fines bolter is 0.3mm.

3. portable urban pipe network sludge reduction processing unit according to claim 1, it is characterised in that：The coarse fodder Bolter, fines bolter are vibratory sieve.

4. portable urban pipe network sludge reduction processing unit according to claim 1, it is characterised in that：The high pressure Soil pick-up pump uses operating pressure for the wear-resisting soil pick-up pump of 0.2 MPa vacuum.

5. portable urban pipe network sludge reduction processing unit according to claim 1, it is characterised in that：The coarse fodder High-pressure hydraulic flushing pipe is equipped with above bolter and fines bolter.

6. fixed urban pipe network sludge reduction processing unit, it is characterised in that：Including pre-separation sieve, the second slurry storage tank, slag Stock pump, coarse fodder bolter, fines bolter, cyclone separator, the first slurry storage tank, high pressure soil pick-up pump, middle storage tank；

The pre-separation sieve is placed in above the second slurry storage tank, and the second slurry storage tank is suitable for reading unlimited and whole receive is sieved by pre-separation The slurries of net, the bottom of the second slurry storage tank is bucket-shaped, and bottom is entered provided with outlet and by the mud of Pulp pump and coarse fodder bolter Mouth connection；

Overlapped above and below the fines bolter, coarse fodder bolter, and fines bolter is located at the top of coarse fodder bolter；

The coarse fodder bolter is exported provided with mud inlet and coarse fodder, and sludge enters coarse fodder bolter, screening from mud inlet The dry slag of coarse fodder gone out is exported from coarse fodder and discharged, and is then fallen into and is placed in below coarse fodder bolter by the slurries of coarse fodder bolter screen cloth First slurry storage tank；

The suitable for reading of first slurry storage tank opens wide and all receives the slurries by coarse fodder bolter screen cloth, the bottom of the first slurry storage tank Portion is bucket-shaped, and bottom with cyclone separator is connected provided with outlet and by high pressure soil pick-up pump；

The cyclone separator is placed in the top of fines bolter, and sludge is carried out solid-liquid point by cyclone separator with high-speed rotational From storage tank during the liquid after separation is introduced into, the solid after separation then falls into fines bolter from cyclone separator bottom；

The fines bolter is exported provided with fines, and the dry slag of fines sifted out is exported from fines and discharged, and is sieved by fines bolter The coarse fodder bolter that the aqueous of net then falls into lower section enters back into the first slurry storage tank；

The position of the middle storage tank, which is higher than between the first slurry storage tank, and middle storage tank and the first slurry storage tank, is provided with fluid passage；Using Float type level switch is controlled according to the height that liquid level is controlled in slurry storage tank, and by high level closing in the way of low liquid level connection The on-off of fluid passage in system between storage tank and the first slurry storage tank；

The middle storage tank is additionally provided with the liquid outlet for drawing liquid.

7. fixed urban pipe network sludge reduction processing unit according to claim 6, it is characterised in that：Described pre- point Mesh size from sieve is 50mm；The mesh size of the coarse fodder bolter is 3mm；The mesh size of the fines bolter is 0.3mm。

8. fixed urban pipe network sludge reduction processing unit according to claim 6, it is characterised in that：The coarse fodder Bolter, fines bolter and pre-separation sieve are vibratory sieve.

9. fixed urban pipe network sludge reduction processing unit according to claim 6, it is characterised in that：The high pressure Soil pick-up pump uses operating pressure for the wear-resisting soil pick-up pump of 0.2 MPa vacuum；The Pulp pump is normal pressure centrifugal pump.

10. fixed urban pipe network sludge reduction processing unit according to claim 6, it is characterised in that：It is described thick The top of material bolter, fines bolter and pre-separation sieve is equipped with high-pressure hydraulic flushing pipe.