CN204981547U - Minimizing of pipe duct mud and innocent treatment device - Google Patents

Abstract

The utility model belongs to the field of sludge treatment, in particular to a reducing and harmless treatment device for pipe and channel sludge. The pipe and channel sludge reduction and harmless treatment device includes a sludge storage tank, a material selector, a feeder, a washing device, a friction bounce separator, a mud-water separator, a jig, a primary rotary Flow device, secondary cyclone, coagulation and sedimentation device, scrubbing machine, spiral chute, filter press, dewatering screen, fine particle size dewatering screen, rotary vibrating screen, slurry storage tank, sand washing machine, conveying device, slag material Collection device, sand collection device. After adopting the device described in the utility model to reduce and harmlessly treat the pipe and channel sludge, the volume of the pipe and channel sludge is greatly reduced, and the content of harmful substances in the pipe and channel sludge is greatly reduced. The wet method fine separation is carried out, and the resources after separation are rationally reused.

Description

A device for pipe and channel sludge reduction and harmless treatment

technical field

The utility model belongs to the field of sludge treatment, in particular to a reducing and harmless treatment device for pipe and channel sludge.

Background technique

With the intensification of my country's treatment of urban domestic sewage and industrial wastewater, water pollution control projects have been launched on a large scale, and the problem of sludge treatment and disposal accompanying sewage treatment has become increasingly prominent. In addition, with the improvement of the water delivery capacity of rain, sewage pipelines and pumping stations, a large amount of domestic sewage and industrial wastewater containing particulate matter and impurities enter the drainage pipeline transportation system every day, which must be cleaned regularly, resulting in ditch sludge and pumping stations. Garbage production has also increased significantly.

At present, the sludge generated in domestic drainage pipes is mainly dredged mechanically or manually cleared to sludge transport vehicles and sludge trailers, and then transported to the sludge transfer site. After drying, it is transported to landfill for the second time. At the site, a small amount of sludge is directly entrusted to sanitation vehicles to be transported out for disposal, and another part is mixed with muck and then transported out for disposal. During the entire disposal process of Sinotrans, there are common problems such as leakage, leakage, and lack of supervision, which easily cause secondary pollution.

Disadvantages of existing sludge disposal methods:

1) Drying on the spot: The moisture content of the sludge is high, and it is generally required to be dehydrated before disposal. Due to the current treatment level, it is generally used to dry on the spot. During the drying process, the sludge emits foul smell and poisonous bacteria. Dissemination, affecting the normal life and physical and mental health of residents, will inevitably cause complaints about sewage sludge disturbing residents to increase year by year; sludge drying mostly chooses urban green spaces, which damages the beauty of the urban environment.

2) Overseas stacking: At present, a considerable part of sludge in my country is still transported to relatively remote suburbs and rural areas for stacking. Since the sludge at the stacking point is stored in the open air, the sanitation treatment is not perfect, and the heavy metals in the sludge pollute rural farmland, seriously Threat to my country's agricultural safety, sludge emits foul smell, affecting the production and life of residents;

3) Landfilling in garbage dumps: Due to the high moisture content of sludge, it must be dried before entering the garbage landfill. The drying yard covers a large area and causes serious secondary pollution; it is not easy to dry in rainy areas or seasons; mud storage points Generally far away from the urban area, most of them are distributed outside the outer ring road and near the outer suburbs of the city, and the transportation cost is relatively high; the excessive moisture content and organic matter content in the sludge greatly reduce the resistance of the construction dregs when they are mixed with construction dregs for landfill. Shear strength.

Therefore, it is imminent to study a sludge reduction and harmless treatment process. At present, vibrating screening, hydrocyclone combined with hydraulic flushing, and sludge stirring are mainly used in China to reduce and sort the sludge in the pipe network. The water content of domestic drainage pipes and canals is high, which not only increases the transportation volume of clearing sludge, but also leads to the phenomenon of running, emitting, dripping and leaking. Fibers and entanglements in the pipe network sludge are easy to Screening performance is affected, the concentration of sludge feed fluctuates greatly, and the sludge concentration difference between suction trucks and manual cleaning is large, resulting in unstable treatment process and limited treatment effect; high solid content of tail water, especially heavy metals , organic matter, and suspended matter are difficult to separate, resulting in a low recycling rate of process water, and there are also problems in the resource utilization of later sludge. Due to the above-mentioned reasons, the current sludge reduction and sorting treatment is very insufficient. Therefore, most sludge is still treated in a very primitive and simple way.

Utility model content

The utility model aims at the deficiencies of the prior art, and aims to provide a device for reducing and harmless treatment of pipe and channel sludge.

For realizing above-mentioned utility model purpose, the technical scheme that the utility model adopts is:

A pipe and channel sludge reduction and harmless treatment device is characterized in that it includes: a sludge storage tank, a material selector, a feeder, a washing device, a friction bounce sorter, a mud-water separator, a jumper Purging machine, primary cyclone, secondary cyclone, coagulation and sedimentation device, scrubbing machine, spiral chute, filter press, dewatering screen, fine particle dewatering screen, rotary vibrating screen, slurry storage tank, sand washing machine , conveying device, slag collection device, sand collection device; the material selector sends the pipe sludge from the sludge storage tank to the feeder, and the feeder distributes the pipe sludge to the washing device, The outlet under the screen of the washing device is connected with the mud-water separator, and the outlet on the screen is connected with the friction bounce separator; the two outlets of the friction bounce separator are respectively connected with two dewatering screens, and the two dewatering screens are then connected to each other. Connect with the slag collection device through the conveying device; the outlet on the screen of the mud-water separator is connected to the jig machine, and the outlet under the screen is connected to the slurry storage tank; the two outlets of the jig machine are respectively connected to two dewatering screens , the dewatering screen is connected with the slag collection device through the conveying device; the slurry storage tank is connected with the primary cyclone through the conveying pump, and the overflow outlet of the primary cyclone is connected with the coagulation sedimentation device, filter press The underflow outlet of the primary cyclone is connected with the scrubbing machine and the secondary cyclone in sequence; the overflow outlet of the secondary cyclone is connected with the coagulation sedimentation device and the filter press in sequence connected, the bottom outflow outlet of the secondary cyclone is connected with the spiral chute; the light matter outlet of the spiral chute is connected with the rotary vibrating screen, the outlet of the upper material of the rotary vibrating screen is connected with the filter press, and the bottom of the rotary vibrating screen The material outlet is connected to the slurry storage tank; the heavy product outlet of the spiral chute is connected to the fine particle size dewatering screen, the upper outlet of the fine particle size dehydration screen is connected to the sand washing machine in sequence, and the underscreen material outlet is connected to the slurry storage tank.

In the above scheme, there is a grid cover plate on the upper part of the sludge storage tank, and the grid pitch of the grid cover plate can be adjusted between 50-150 mm as required.

In the above solution, the grid cover plate has a vibration function.

In the above solution, the sorting particle size of the washing device is 20-100 mm.

In the above solution, the sieving particle size of the mud-water separator is 3-20 mm.

In the above solution, the separation median diameter of the primary cyclone and the secondary cyclone is 30-50 μm.

In the above solution, the sieving particle size of the dewatering sieve is 3-20 mm, and the sieving particle size of the fine particle size dewatering sieve is 0.1 mm.

In the above solution, a dosing device is also included, and the dosing device is connected with the coagulation and sedimentation device.

In the present utility model, the described pipe and channel sludge reduction and harmless treatment process device can adopt an embedded PLC automatic control system.

A pipe and channel sludge reduction and harmless treatment process is characterized in that it includes the following steps:

(1) The pipe and channel sludge enters the sludge storage tank through the grille cover plate, and the large-scale debris is intercepted by the grille; the pipe and channel sludge is sent from the sludge storage tank to the feeder by using the material selector, and then fed The feeder is assigned to the washing device. After the washing device is crushed, rinsed and preliminarily sorted, the slag material and solid-liquid mixture with a particle size of 20-100 mm are obtained, and the slag material with a particle size of 20-100 mm enters the friction bounce separator Sorting to obtain large-sized combustibles and large-sized inorganics. After dehydration, large-sized combustibles and large-sized inorganics are transported to the corresponding slag collection device by the conveyor;

(2) Send the solid-liquid mixture obtained by the separation of the washing device to the mud-water separator, and obtain slag and waste liquid with a particle size of 3-20mm after screening. The waste liquid is transported to the slurry storage tank for storage. The slag material enters the jig for classification to obtain medium-sized inorganic matter and medium-sized combustible matter. The medium-sized inorganic matter and medium-sized combustible matter enter the dehydration screen and are fully dehydrated, and are transported to the corresponding by the conveyor. slag collection device;

(3) Pump the waste liquid sieved by the mud-water separator to the first-stage cyclone, and obtain heavy product underflow 1 and overflow slurry 1 after sufficient cyclone separation; heavy product underflow 1 enters the scrubbing machine for scrubbing , and then transported to the secondary cyclone for secondary separation to obtain the heavy product underflow 2 and overflow slurry 2, the overflow slurry 1 and overflow slurry 2 were coagulated and concentrated, and then transported to the filter press to obtain Filter cake and filtrate; the heavy product underflow 2 is transported to the spiral chute for separation to obtain organic-rich oil sludge and mineral mortar. The organic-rich oil sludge is screened by a rotary vibrating sieve and filtered by a filter press to obtain a filter cake and filtrate , Mineral sand is obtained after the mineral mortar is sieved by a fine-grained dewatering sieve and washed by a sand washing machine.

In the above scheme, the combustibles with large particle size and medium particle size can be used for incineration to generate electricity or landfill, and the large particle size inorganic matter and medium particle size inorganic matter can be crushed and used as gravel or directly buried. The filter cake can be incinerated or landfilled, and the filtrate is discharged after further sedimentation treatment, and the mineral sand can be used as construction sand.

In the pipe and channel sludge reduction and harmless treatment device described in the utility model, the separation principle of the washing device is: the washing and selecting cylinder is supported by supporting wheels, and rotates at a low speed under the drive of the motor, and the pipe and channel sludge is automatically The feed inlet enters the rotating drum, and is continuously lifted up and thrown down in the drum. During this process, it is rinsed and washed by the flushing water, and some large pieces of fragile garbage are broken. Most of the organic matter and sediment on the surface of the garbage It can be removed, and the slag and solid-liquid mixture with a particle size of 20-100 mm can be obtained after washing, and then enter the next process flow respectively. The separation principle of the friction bounce separator is: when the large-sized organic matter and inorganic matter fall into the inclined plate, the inorganic matter will elastically collide with the inclined plate, bounce to the lower part of the inclined plate, and be discharged into the heavy elastic product collection bin from the lower end of the inclined plate. The organic matter collides with the surface of the inclined plate plastically without bouncing, and moves upward with the inclined plate transport plate, and is discharged into the light non-elastic product collection bin from the upper end of the inclined plate, so as to realize the separation of organic matter and inorganic matter. The separation principle of the jig machine is: use particles of different densities to produce different lifting forces due to different local pressures and settling velocities in the rising water flow, objects with high density sink to the bottom of the jig machine, and objects with low density rise to the top of the jig machine And go with the flow. The separation principle of the scrubbing machine is: use the stirring device inside the scrubbing machine to make the material roll up and down in a circle in the scrubbing machine, the material collides and rubs against the material, and the grease on the surface of the material and other sundries attached are peeled off under the action of friction . The separation principle of the spiral chute is: the use of materials of different densities in the spiral chute will produce different power, centrifugal force, friction, etc., under the combined action of various forces, the material will flow from the spiral channel of the spiral chute from the height When flowing down, the particles of different densities gradually stratify during the flow process of the spiral channel. The sand particles with high density are concentrated in the inner layer, and the sludge with low density and more oil content is mainly located in the outer layer. The separation of sand particles and sludge is realized at the discharge port. separate.

Beneficial effects of the utility model: (1) Using the process device described in the utility model to reduce and harmlessly treat pipe and channel sludge can solve the impact of sludge with high moisture content on the environment in the process of transportation, treatment and disposal , to improve the current problem of sludge disposal with high moisture content in the municipal maintenance department, and to avoid the random dumping of the sludge in the pipe network; , The volume of pipe sludge is greatly reduced, which reduces the transportation cost to landfill, effectively relieves the space pressure of landfill, and at the same time reduces the content of harmful substances in pipe sludge through reduction and harmless treatment , reducing the secondary pollution to the landfill; (3) using the process device described in the utility model to treat the pipe and channel sludge, the wet method fine separation of the pipe and channel sludge is carried out, and the organic matter and the inorganic matter can be well classified Separation, in which combustibles with high calorific value can be disposed of through landfill, and can also be used for waste power generation to provide energy; the organic matter content of the treated mineral sand is very low, which meets the requirements of landfill, and can also be used as construction sand. Reasonable reuse of resources; the coarse and medium-sized inorganic substances obtained after treatment have low organic content, which can be used as construction waste landfill, and can also be further processed as building materials.

Description of drawings

Fig. 1 is the equipment diagram of pipe and channel sludge reduction and harmless treatment process of the present invention, wherein 1 is a sludge storage tank, 2 is a material selector, 3 is a feeder, 4 is a washing device, 5 is a Friction bounce separator, 6 is mud-water separator, 7 is jig, 8 is slurry storage tank, 9 is primary cyclone, 10 is scrubbing machine, 11 is coagulation sedimentation device, 12 is secondary cyclone 13 is a spiral chute, 14 is a dewatering screen, 15 is a rotary vibrating screen, 16 is a sand washing machine, 17 is a sand collection device, 18 is a dosing device, 19 is a filter press, 20 is a conveying device, 21 is a slag Material collecting device, 22 is fine-grained dewatering screen.

Figure 2 is a flow chart of the reduction and harmless treatment process of pipe and channel sludge.

detailed description

In order to better understand the utility model, the content of the utility model is further explained below in conjunction with the examples, but the content of the utility model is not limited to the following examples.

Referring to Fig. 1, a process equipment for pipe and channel sludge reduction and harmless treatment, including: sludge storage tank 1, material selector 2, feeder 3, washing device 4, friction bounce separator 5 , mud-water separator 6, jig 7, slurry storage tank 8, primary cyclone 9, scrubbing machine 10, coagulation sedimentation device 11, secondary cyclone 12, spiral chute 13, dewatering screen 14, rotary vibration Sieve 15, sand washing machine 16, sand collecting device 17, dosing device 18, filter press 19, conveying device 20, slag material collecting device 21, 22 are fine-grained dewatering screens. The material selector 2 is used to send the pipe sludge from the sludge storage tank 1 to the feeder 3, and the feeder 3 is used to distribute the pipe sludge to the washing device 4, and the washing The two outlets of the device 4 are respectively connected with the friction bounce separator 5 and the mud-water separator 6, and the two outlets of the friction bounce separator 5 are respectively connected with two dewatering screens 14, and the dewatering screen 14 passes through the conveying device 20 It is connected with the slag collecting device 21; the outlet on the screen of the mud-water separator 6 is connected with the jig 7, the outlet under the screen is connected with the slurry storage tank 8, and the two outlets of the jig 7 are respectively connected with two dewatering machines. The sieve 14 is connected, and the dewatering sieve 14 is connected with the collection device 21 through the delivery device 20; the slurry storage tank 8 is connected with the primary cyclone 9 through the delivery pump; the overflow outlet of the primary cyclone 9 is connected with the mixing The coagulation and sedimentation device 11 is connected, and the coagulation and sedimentation device 11 is connected with the filter press 19; the underflow outlet of the first-stage cyclone 9 is connected with the scrubbing machine 10; the scrubbing machine 10 is connected with the secondary cyclone 12; the two The overflow outlet of the stage cyclone 12 is connected with the coagulation and sedimentation device 11, and the bottom flow outlet is connected with the spiral chute 13; the light matter outlet of the spiral chute 13 is connected with the rotary vibrating screen 15, and the sieve on the rotary vibrating screen 15 is transported to The filter press 19 presses and dehydrates, and the undersize outlet is connected to the slurry storage tank 8; the heavy product outlet of the spiral chute 13 is connected to the fine-grain dewatering screen 22, and the fine-grain dewatering screen 22 oversize outlet is connected to the sand washing The machine 16 is connected, and the undersize outlet is connected with the slurry storage tank 8.

In the above scheme, there is a grid cover plate on the upper part of the sludge storage tank, and the grid pitch of the grid cover plate can be adjusted between 50-150 mm as required. After being intercepted by the grid, the large-volume debris with a hole diameter larger than the grid spacing is separated. These debris are mainly rags, plastic bags, etc., which are manually sorted and dried and then sent to the incineration plant for centralized incineration. Further, the grid cover plate has a vibration function, and the grid is driven by a vibration motor, and the slag is thrown on the grid in an oblique forward trajectory or an elliptical throwing trajectory, which can reduce the residue of the slag on the grid. . The grid pitch can also be designed according to the actual situation of sludge particles.

In the above solution, the separation particle size of the washing device is 20-100mm, and the separation particle size of the washing device can also be adjusted according to the grid spacing of the previous process to achieve the purpose of efficient separation.

In the above solution, the sieving particle size of the mud-water separator is 3-20mm. The separation particle size of the mud-water separator can be adjusted according to the different incoming materials and the separation particle size of the washing device in the previous process. Slurry separator can choose vibrating screen or drum screen.

In the above solution, the separation median diameter of the primary cyclone and the secondary cyclone is between 30 μm and 50 μm.

In the above solution, the sieving particle size of the dewatering sieve is 3-20 mm, and the sieving particle size of the fine particle size dewatering sieve is 0.1 mm.

In the above solution, a dosing device 18 is also included, and the dosing device 18 is connected with the coagulation and sedimentation device 11 .

Example 1

A pipe and channel sludge reduction and harmless treatment process, comprising the following steps:

(1) The sludge from pipes and channels enters the sludge storage tank through the grid cover plate. The grid spacing is set at 50-100mm. Cloth strips, plastic bags, etc., are manually sorted and dried by the slag scraper and sent to the incineration plant for centralized incineration; this grille can also be a grille with a vibration function, and the grille is driven by a vibration motor, and the slag is on this grille The oblique forward throwing trajectory or elliptical throwing trajectory can reduce the residue of slag on the grid; the grid spacing can be specifically designed according to the sludge particles;

(2) Most of the sludge passes through the grille, and the pipe and channel sludge is sent from the sludge storage tank to the feeder by the feeder, and then distributed to the washing device by the feeder, broken and rinsed by the washing device After preliminary sorting, the slag and solid-liquid mixture with a particle size of 20-100mm are obtained, and the slag with a particle size of 20-100mm enters the friction bounce separator for classification, and the large-size combustibles and large-size inorganic Combustible matter with large particle size and inorganic matter with large particle size enter the dewatering screen and are fully dehydrated, and then transported to the corresponding collection device by the conveying equipment; the separation particle size of the washing device can also be adjusted according to the grid spacing of the previous process So as to achieve the purpose of efficient separation;

(3) Send the solid-liquid mixture obtained by the separation of the washing device to the mud-water separator. After separation and treatment, slag and waste liquid with a particle size of 3-20mm are obtained, and the waste liquid is transported to the slurry storage tank for storage. The particle size is 3-20mm The slag enters the jig machine for classification, and the medium-sized inorganic matter and medium-sized combustible matter are classified, and the medium-sized inorganic matter and medium-sized combustible matter are respectively sent to the dehydration screen for full dehydration, and then transported by the conveying equipment to corresponding collection device;

(4) Pump the waste liquid obtained from the screening of the mud-water separator to the first-stage cyclone, and obtain the heavy product underflow 1 and the overflow slurry 1 after sufficient cyclone separation; the heavy product underflow 1 enters the scrubbing machine for scrubbing , and then transported to the secondary cyclone for secondary separation to obtain the heavy product underflow 2 and overflow slurry 2, the overflow slurry 1 and overflow slurry 2 were coagulated and concentrated, and then transported to the filter press to obtain For filter cake and filtrate, in order to improve the filtration efficiency, filter aids can be added during the coagulation and concentration process; the heavy product underflow 2 is transported to the spiral chute for separation to obtain oil sludge and mineral mortar rich in organic matter. Oil sludge is sieved by rotary vibrating sieve and filtered by filter press to obtain filter cake and filtrate. Mineral mortar is sieved by fine particle size dehydration sieve and washed by sand washing machine to obtain mineral sand.

In this embodiment, the collected combustibles with large particle size and medium particle size belong to combustible garbage with high calorific value, which can be used for incineration to generate electricity or landfill treatment. The collected medium particle size inorganic matter and large particle size inorganic matter It can be crushed and used as gravel or directly landfilled. The collected filter cake can be used for incineration or landfill. The collected mineral sand can meet the requirements of landfill or be used as construction sand. The filtrate is discharged after further precipitation treatment.

Apparently, the above-mentioned embodiments are only examples for clear illustration, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And therefore the obvious changes or changes extended are still within the scope of protection of the utility model.

Claims (8)

1. A pipe and channel sludge reduction and harmless treatment device, characterized in that it includes: a sludge storage tank, a material selector, a feeder, a washing device, a friction bounce separator, and a mud-water separator , jig machine, primary cyclone, secondary cyclone, coagulation sedimentation device, scrubbing machine, spiral chute, filter press, dehydration screen, fine particle size dehydration screen, rotary vibrating screen, slurry storage tank, washing machine Sand machine, conveying device, slag collection device, sand collection device; the material selector sends the pipe sludge from the sludge storage tank to the feeder, and the feeder distributes the pipe sludge to the washing device, the under-screen outlet of the washing device is connected with the mud-water separator, and the over-screen outlet is connected with the friction bounce separator; the two outlets of the friction bounce separator are respectively connected with two dewatering screens, and the dewatering screen is then Connect with the slag collection device through the conveying device; the outlet on the screen of the mud-water separator is connected to the jig machine, and the outlet under the screen is connected to the slurry storage tank; the two outlets of the jig machine are respectively connected to two dewatering screens , the two dewatering screens are connected with the slag collection device through the conveying device; the slurry storage tank is connected with the primary cyclone through the conveying pump, and the overflow outlet of the primary cyclone is connected with the coagulation and sedimentation device, The filter press is connected in sequence; the underflow outlet of the primary cyclone is connected with the scrubbing machine and the secondary cyclone in sequence; the overflow outlet of the secondary cyclone is connected with the coagulation sedimentation device and the filter press connected in sequence, the bottom outflow outlet of the secondary cyclone is connected with the spiral chute; the light matter outlet of the spiral chute is connected with the rotary vibrating screen, and the outlet of the sieve on the rotary vibrating screen is connected with the filter press, and the rotary vibrating screen The undersize outlet is connected to the slurry storage tank; the heavy product outlet of the spiral chute is connected to the fine-grained dewatering screen, the upper outlet of the fine-grained dewatering screen is connected to the sand washing machine in sequence, and the underscreen outlet is connected to the slurry storage tank. connect. 2. The pipe and channel sludge reduction and harmless treatment device according to claim 1, characterized in that there is a grid cover plate on the upper part of the sludge storage tank, and the grid pitch of the grid cover plate is set 50~150mm. 3. The pipe and channel sludge reduction and harmless treatment device according to claim 2, characterized in that the grid cover plate has a vibration function. 4. The pipe and channel sludge reduction and harmless treatment device according to claim 1, characterized in that the separation particle size of the washing device is 20-100mm. 5. The pipe and channel sludge reduction and harmless treatment device according to claim 1, characterized in that, the screening particle size of the mud-water separator is 3-20mm. 6. The pipe and channel sludge reduction and harmless treatment device according to claim 1, characterized in that, the separation median diameter of the first-stage cyclone and the second-stage cyclone is 30-50 μm. 7. The pipe and channel sludge reduction and harmless treatment device according to claim 1, characterized in that, the sieving particle size of the dewatering screen is 3 ~ 20mm, and the sieve size of the fine-grained dewatering sieve The particle size is 0.1mm. 8. The pipe and channel sludge reduction and harmless treatment device according to claim 1, further comprising a dosing device connected to a coagulation and sedimentation device.