Intensive treatment system for sewer sludge

Abstract

The utility model discloses an intensive treatment system for ditch sludge, which comprises a storage bin for storing sludge, a washing drum for separating particulate matters, a spiral conveying system for conveying the ditch sludge in the storage bin to the washing drum, and a sand removing and washing integrated device for separating inorganic sand grains, the fine grid is used for removing organic matters, the cyclone desander is used for separating superfine sand by utilizing hydraulic cyclone, the sand-water separation device is used for separating inorganic particles, the temporary storage water tank is used for storing effluent of the fine grid, the reclaimed water tank is used for storing reclaimed water, the slag discharging device is used for receiving separated matters, and the electrical system is used for controlling all the parts. The utility model has the advantages of optimized layout, reduced elevation and the like, classifies and screens the sewer sludge, is favorable for subsequent resource utilization, and researches and selects a proper resource utilization path according to local conditions in combination with specific sewer sludge properties.

Description

Technical Field

[0001] The utility model relates to an intensive treatment system for ditch sludge, belonging to the technical field of sludge treatment. Background Art

[0002] Drain sludge, also known as "network sludge," is the sludge from urban drainage canals. It consists of large amounts of particulate matter, mud, and debris deposited in pipes during dredging and removal during pipe network maintenance. Drain sludge is a significant factor affecting the safe operation of urban drainage networks. Firstly, unimpeded drainage is essential for the proper functioning of the network. Secondly, if not properly handled after pipeline cleaning, drain sludge can occupy significant land and pose a risk of secondary pollution, posing a significant environmental safety hazard.

[0003] Tongditch sludge is different from sewage plant sludge. The inorganic content exceeds 80%, which is significantly more than the organic component. The impurity particle size varies greatly and the composition is complex. It needs to be graded and treated according to quality to achieve reduction, harmlessness and resource utilization. Summary of the Invention

[0004] The technical problem to be solved by the utility model is: due to the high solid content of the medium material, there is a large height difference between the existing ditch sludge treatment equipment and the units, which results in a complex layout of the entire ditch sludge treatment station, high building height, increased difficulty in civil structure construction, and a lack of effective resource utilization path for the subsequent screening materials of the ditch sludge disposal project.

[0005] In order to solve the above problems, the utility model provides an intensive treatment system for ditch sludge, which includes a storage bin for storing sludge, a washing drum for separating large particles, a spiral conveying system for transporting the ditch sludge in the storage bin to the washing drum, an integrated sand removal and sand washing device for separating inorganic sand particles, a fine screen for removing organic matter, a cyclone desander for separating ultrafine sand using hydraulic cyclone, a sand-water separation device for separating inorganic fine sand, a temporary water tank for storing water output from the fine screen, a grey water tank for storing grey water, a slag discharge device for receiving separated matter, and an electrical system for controlling each component.

[0006] Preferably, the screw conveying system includes a screw conveyor and a screw lift pump.

[0007] Preferably, the washing drum and the integrated sand removal and washing device are arranged on the same plane.

[0008] Preferably, the fine grid and the temporary water tank are an integrated structure.

[0009] Preferably, a sand removal pump is provided in the temporary water tank.

[0010] Preferably, the washing drum is provided with a drum flushing pump for flushing.

[0011] Preferably, the integrated sand removal and washing device is provided with a sand washing machine flushing pump.

[0012] Preferably, the fine grid is provided with a medium-pressure flushing pump and a high-pressure flushing pump for flushing.

[0013] Preferably, the particle size of the large particle material is greater than 10 mm; the particle size of the inorganic sand particles is 0.2 to 10 mm; the particle size of the organic matter is not less than 2 mm; the particle size of the ultrafine sand is not greater than 0.2 mm; and the particle size of the inorganic fine sand is not greater than 0.2 mm.

[0014] Preferably, the storage bin, the spiral conveying system, the washing drum, the integrated sand removal and washing device, the fine grid, the cyclone desander, the sand-water separation device, and the slag discharge device are connected in sequence.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Optimize the layout and reduce the elevation: Optimize the overall process layout, arrange the washing drum, sand removal and washing machine and subsequent devices on the same plane, minimize the elevation and simplify the process.

[0017] 2. Classification and screening are conducive to subsequent resource utilization. Combined with the specific properties of ditch sludge, appropriate resource utilization paths should be selected according to local conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the intensive ditch sludge treatment system provided by the utility model. DETAILED DESCRIPTION

[0019] In order to make the present invention more clear and easy to understand, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0020] Example

[0021] like Figure 1As shown, the utility model provides an intensive treatment system for ditch sludge, which includes a storage bin 1 for storing sludge, a washing drum 3 for separating particulate matter, a screw conveying system 2 for conveying the ditch sludge in the storage bin 1 to the washing drum 3, a sand removal and washing device 4 for separating inorganic sand particles, a fine screen 5 for removing organic matter, a cyclone desander 6 for separating ultrafine sand using hydrocyclone, a sand-water separator 7 for separating inorganic particles, a temporary water tank 8 for storing water output from the fine screen 5, a reclaimed water tank 9 for storing reclaimed water, a slag discharge device 15 for receiving the separated material, and an electrical system 16 for controlling the various components. The storage bin 1, the feeding screw conveyor 2, the washing drum 3, the sand removal and washing device 4, the fine screen 5, the cyclone desander 6, the sand-water separator 7, and the slag discharge device 15 are sequentially connected.

[0022] The storage bin 1 is provided with a screw conveying system, including a screw conveyor and a screw lifting pump for conveying and lifting.

[0023] The washing drum 3 and the integrated sand removal and washing device 4 are arranged on the same plane.

[0024] The fine grid 5 and the temporary water tank 8 are an integrated structure.

[0025] A sand removal pump 10 is provided in the temporary water tank 8 .

[0026] The washing drum 3 is provided with a drum flushing pump 11 for flushing.

[0027] The integrated sand removal and washing device 4 is provided with a sand washing pump 12 .

[0028] The fine grid 5 is provided with a medium-pressure flushing pump 13 and a high-pressure flushing pump 14 for flushing.

[0029] The particle size of the large particle material is greater than 10 mm; the particle size of the inorganic sand particles is 0.2 to 10 mm; the particle size of the organic matter is not less than 2 mm; the particle size of the ultrafine sand is not greater than 0.2 mm; and the particle size of the inorganic fine sand is not greater than 0.2 mm.

[0030] In order to meet the requirements of tank truck unloading, reduce the elevation as much as possible and simplify the process, the following plan is prepared:

[0031] (1) First, the storage silo is arranged underground.

[0032] (2) The water is transported to the washing drum by a spiral lifting pump. The water from the washing drum flows to the mud storage tank and is then lifted by the sand removal pump to the sand removal and washing integrated device.

[0033] (3) The washing drum and the integrated sand removal and washing device are arranged on the same plane.

[0034] (4) At the outlet of the fine screen, a temporary water tank is integrated and made into a semi-underground water tank unit to meet the minimum operating water level of the sand removal pump.

[0035] The process route of the above system is:

[0036] Feeding box → washing drum → sand removal and washing machine → fine screen → sand and water separator

[0037] The water content of ditch sludge is 85wt%. The system has a processing capacity of 60t / d and an operating time of 8h / d, or 7.5t / h. This system washes and screens the complex ditch sludge, separating out coarse particles larger than 10mm. It also fluidizes and washes mineralized particles larger than 0.2mm, reducing the organic content in the sand to below 5%. This allows for long-term storage and potential recycling as low-grade building materials. Fine screens and hydrocyclones are used to separate particles smaller than 0.2mm.

Claims

1. A ditch sludge intensive treatment system, characterized in that: The invention comprises a storage bin (1) for storing mud, a washing drum (3) for separating large particles, a screw conveying system (2) for conveying the ditch sludge in the storage bin (1) to the washing drum (3), a sand removal and sand washing integrated device (4) for separating inorganic sand particles, a fine grid (5) for removing organic matter, a cyclone desander (6) for separating ultrafine sand by using a hydrocyclone, a sand-water separation device (7) for separating inorganic fine sand, a temporary water tank (8) for storing water discharged from the fine grid (5), a reclaimed water tank (9) for storing reclaimed water, a slag discharge device (15) for receiving separated matter, and an electrical system (16) for controlling various components.

2. The intensive treatment system for ditch sludge according to claim 1, characterized in that: The screw conveying system (2) comprises a screw conveyor and a screw lift pump.

3. The intensive treatment system for ditch sludge according to claim 1, characterized in that: The washing drum (3) and the integrated sand removal and washing device (4) are arranged on the same plane.

4. The intensive treatment system for ditch sludge according to claim 1, characterized in that: The fine grid (5) and the temporary water tank (8) are an integrated structure.

5. The intensive treatment system for ditch sludge according to claim 1, characterized in that: A sand removal pump (10) is provided in the temporary water tank (8).

6. The intensive treatment system for ditch sludge according to claim 1, characterized in that: The washing drum (3) is provided with a drum flushing pump (11) for flushing.

7. The intensive treatment system for ditch sludge according to claim 1, characterized in that: The integrated sand removal and sand washing device (4) is provided with a sand washing machine flushing pump (12).

8. The intensive treatment system for ditch sludge according to claim 1, characterized in that: The fine grid (5) is provided with a medium-pressure flushing pump (13) and a high-pressure flushing pump (14) for flushing.

9. The intensive treatment system for ditch sludge according to claim 1, characterized in that: The particle size of the large particle material is greater than 10 mm; the particle size of the inorganic sand particles is 0.2 to 10 mm; the particle size of the organic matter is not less than 2 mm; the particle size of the ultrafine sand is not greater than 0.2 mm; and the particle size of the inorganic fine sand is not greater than 0.2 mm.

10. The intensive ditch sludge treatment system according to any one of claims 1 to 7, characterized in that: The storage bin (1), the spiral conveying system (2), the washing drum (3), the sand removal and washing integrated device (4), the fine grid (5), the cyclone desander (6), the sand-water separation device (7), and the slag discharge device (15) are sequentially connected.

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