A sludge treatment process

Abstract

The present application relates to sludge treatment technical field, more specifically, a kind of sludge treatment process;The process includes the following steps: step one: sludge is added to treatment device, and dilution is carried out by adding clean water, and mud is obtained;Step two: mud is stirred, and flocculating agent and treating agent are added during stirring, and mixed mud is obtained;Step three: mixed mud is filtered, and sludge is precipitated by standing;Step four: sludge after precipitation is dehydrated, and sludge after dehydration is classified with water and purified;The treatment device includes bottom bucket, and rotatingly connected on bottom bucket and can rotate around the axis of bottom bucket rotating tower, and fixed on rotating tower ring, and rotating on bottom bucket and with ring meshing gear;The inner cavity is opened in the rotating tower, and the outer wall of rotating tower and the side wall of inner cavity are all conical structure;The flowability of sludge can be accelerated, and the processing efficiency of sludge is improved.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, and more specifically to a sludge treatment process. Background Technology

[0002] Sludge treatment refers to the process of reducing, stabilizing, and rendering harmless sludge through concentration, conditioning, dewatering, stabilization, drying, or incineration. In practice, sludge treatment requires mixing with chemicals to ensure even distribution and reaction with harmful substances. However, after dewatering and solidification, the sludge has low water content and poor fluidity, making it difficult to mix evenly with the chemicals, significantly reducing treatment efficiency and effectiveness. Therefore, this application proposes a sludge treatment process that accelerates sludge fluidity and improves treatment efficiency. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a sludge treatment process that can accelerate sludge flowability and improve sludge treatment efficiency.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A sludge treatment process includes the following steps:

[0006] Step 1: Add the sludge to the treatment device and dilute it with clean water to obtain slurry;

[0007] Step 2: Stir the mud and add flocculant and treatment agent during the stirring process to obtain mixed mud;

[0008] Step 3: Filter the mixed sludge and allow it to settle.

[0009] Step 4: Dewater the settled sludge and then separate the dewatered sludge and water for purification.

[0010] The processing device includes a bottom barrel, a turret rotatably connected to the bottom barrel and capable of rotating around the axis of the bottom barrel, a gear ring fixed on the turret, and a gear rotating on the bottom barrel and meshing with the gear ring; the turret has an inner cavity, and the outer wall of the turret and the side wall of the inner cavity are both conical structures.

[0011] The processing device also includes a circular plate fixed to the bottom barrel and sealing the inner cavity from below, and an inner tower fixed to the circular plate and connected to the pipeline inside. The inner tower has multiple leakage holes on its side wall and is located in the inner cavity.

[0012] Both the inner cavity and the outer wall of the turret are fixed with helical blades rotating in the same direction. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0014] Figure 1 This is a flowchart of the sludge treatment process in this invention;

[0015] Figure 2 This is a schematic diagram of the processing device in this invention;

[0016] Figure 3 This is a schematic diagram of the structure of the turntable in this invention;

[0017] Figure 4 This is a schematic diagram of the internal cavity structure in this invention;

[0018] Figure 5 This is a schematic diagram of the structure of the inner tower, the leakage hole, and the baffle in this invention;

[0019] Figure 6 This is a schematic diagram of the toothed ring and the circular plate in this invention;

[0020] Figure 7 This is a schematic diagram of the toothed ring and gear in this invention;

[0021] Figure 8 This is a schematic diagram of the bottom bucket structure in this invention;

[0022] Figure 9 This is a schematic diagram of the bottom ring and inner cylinder in this invention;

[0023] Figure 10 This is a schematic diagram of the filter screen in this invention;

[0024] Figure 11 This is a schematic diagram of the structure of the top cover and glass window in this invention. Detailed Implementation

[0025] A sludge treatment process includes the following steps:

[0026] Step 1: Add the sludge to the treatment device and dilute it with clean water to obtain slurry;

[0027] Step 2: Stir the mud and add flocculant and treatment agent during the stirring process to obtain mixed mud;

[0028] Step 3: Filter the mixed sludge and allow it to settle.

[0029] Step 4: Dewater the settled sludge and then separate the dewatered sludge and water for purification.

[0030] The flocculant is selected from one or more of polyaluminum chloride flocculants and polyacrylamide flocculants.

[0031] The treatment agent in step two is a sludge conditioner.

[0032] Through observation Figure 1 The sludge treatment process can be seen from the diagram. First, the sludge is added to the treatment device, and then an appropriate amount of clean water is added to dilute the sludge, resulting in a slurry that enhances its flowability. Next, the slurry is stirred using the treatment device, and polyaluminum chloride flocculant and sludge conditioner are added during the stirring process to obtain a mixed slurry. Then, the mixed slurry is agitated and turned over by the treatment device to filter out impurities that have coagulated due to the action of the polyaluminum chloride flocculant and sludge conditioner, as well as stones and wood chips mixed in with the sludge. After filtration, the mixed slurry is allowed to settle, allowing the sludge from which impurities, stones, and wood chips have been filtered out to settle. Finally, the settled sludge is dewatered, and the dewatered sludge and water are separated and purified to complete the sludge treatment process.

[0033] Through observation Figure 1 Another process for treating sludge can be obtained according to the diagram. First, the sludge is added to the treatment device, and then an appropriate amount of clean water is added to dilute the sludge, thus improving its flowability. Then, the sludge is stirred using the treatment device, and polyacrylamide flocculant and sludge conditioner are added during the stirring process to obtain a mixed sludge. Next, the mixed sludge is stirred and turned over by the treatment device to filter out impurities that have coagulated together due to the action of polyacrylamide flocculant and sludge conditioner, as well as stones and wood chips mixed in with the sludge. After filtration, the mixed sludge is allowed to stand, allowing the sludge from which the impurities, stones, and wood chips have been filtered out to settle. Finally, the settled sludge is dewatered, and the dewatered sludge and water are separated and purified to complete the sludge treatment process.

[0034] The above process can remove solid waste such as stones and wood chips from the sludge, thus preventing the treatment agents from being unevenly mixed into the sludge due to the presence of solid waste.

[0035] Through observation Figures 3 to 8 An exemplary process for making mud can be derived from the diagram:

[0036] The processing device includes a base tank 15, a turret 01 rotatably connected to the base tank 15, the turret 01 being able to rotate around the axis of the base tank 15, a gear ring 03 fixedly connected to the bottom end of the turret 01, and a gear 09 rotatably connected to the bottom end of the base tank 15. The gear 09 is driven to rotate by a reduction motor mounted on the base tank 15, and the gear 09 meshes with the gear ring 03 for transmission. The turret 01 has an inner cavity 02, and both the outer wall of the turret 01 and the side walls of the inner cavity 02 are tapered structures. The lower end face of the turret 01 contacts the bottom surface of the base tank 15. Two valves are installed at the bottom of the bottom tank 15. During operation, sludge is first introduced into the bottom tank 15 through one of the valves, and then an appropriate amount of clean water is introduced through the other valve. Then the reduction motor can be turned on, which drives the gear 09 to rotate. The gear 09 meshes with the gear ring 03 to make the turret 01 rotate in the bottom tank 15. The turret 01 rotates the sludge and clean water in the bottom tank 15 by rotating on the outer wall of the turret 01, and the sludge is diluted by the clean water to obtain slurry, which improves the flowability of the sludge in subsequent treatment.

[0037] The outer wall of the turret 01 has a conical structure, which can guide the sludge and clean water to come into smooth contact on the outer wall of the turret 01, so that the outer wall of the turret 01 can drive the sludge and clean water to stir and mix.

[0038] Through observation Figures 3 to 8 An exemplary working process to avoid mud splashing, as shown in the figure, is as follows:

[0039] The top of the turret 01 is an arc wall 08 extending horizontally outwards. When stirring sludge and water to make mud slurry, as the mud slurry flows upwards along the outer wall of the turret 01, it is guided by the arc wall 08 to flow horizontally and spread out. Then, with the automatic action of the mud slurry itself, it falls back into the bottom bucket 15, thereby preventing the mud slurry from splashing directly to the outside during the stirring process and avoiding pollution of the working environment.

[0040] Through observation Figures 3 to 8 An exemplary working process for adding flocculants and treatment agents, as shown in the diagram, is as follows:

[0041] The processing device also includes a circular plate 04 fixedly connected to the bottom tank 15, which seals the inner cavity 02 from below. An inner tower 05 is fixedly connected to the circular plate 04. The inner tower 05 is connected to and communicates with the pipeline of the equipment storing flocculant and treatment agent. Multiple leakage holes 06 are opened on the side wall of the inner tower 05. The inner tower 05 is located in the inner cavity 02. After the mud is prepared, the equipment storing flocculant and treatment agent can transport the flocculant and treatment agent to the inner tower 05 through the pipeline. The flocculant and treatment agent flow into the inner cavity 02 through the multiple leakage holes 06 and finally overflow from the inner cavity 02 and flow down from the top of the turret 01. While the mud is being stirred, the flocculant and treatment agent are gradually and evenly mixed into the mud.

[0042] Through observation Figures 3 to 8 Another exemplary working process for adding flocculants and treatment agents, as shown in the figure, is as follows:

[0043] Helical blades are fixedly connected to both the side wall of the inner cavity 02 and the outer wall of the turret 01. The helical blades on the side wall of the inner cavity 02 and the helical blades fixedly connected to the outer wall of the turret 01 rotate in the same direction. When the turret 01 rotates, the helical blades on the outer wall of the turret 01 can scoop up the sludge to mix it with clean water and make the sludge tumble up and down. At the same time, the helical blades on the side wall of the inner cavity 02 can make the flocculant and treatment agent in the inner cavity 02 flow upward. This allows the flocculant and treatment agent to automatically flow out and into the sludge for mixing while the turret 01 rotates to make mud and tumbles the mud. At the same time, the flocculant and treatment agent flowing into the mud can also be turned into the mud while the mud is tumbling up and down, thereby enhancing the mixing effect of the flocculant and treatment agent with the mud.

[0044] Through observation Figures 3 to 8 An exemplary working process for uniformly spreading the flocculant and treatment agent, as shown in the figure, is as follows:

[0045] The top of the inner tower 05 extends through the top of the turret 01, and a baffle 07 is fixedly connected to the top of the inner tower 05. The baffle 07 is located above the top of the turret 01. When the flocculant and the treatment agent flow out from the top of the turret 01, they will touch the baffle 07. Under the blocking effect of the baffle 07, the flocculant and the treatment agent are spread out horizontally, so that the flocculant and the treatment agent can be evenly spread on the churning mud. This achieves the effect of evenly spreading the flocculant and the treatment agent into the mud, avoiding the situation of low mixing efficiency and slow reaction efficiency caused by concentrated input of flocculant and treatment agent.

[0046] Through observation Figures 2 to 9 An exemplary working process for circulating and agitating the mud, as shown in the figure, can be obtained as follows:

[0047] The treatment device also includes a bottom ring 10 fixedly connected to the bottom tank 15, an inner cylinder 11 fixedly connected to the bottom ring 10, and the inner cylinder 11 fitted onto the turret 01. A space is left between the lower end of the inner cylinder 11 and the bottom tank 15 for sludge to pass through. During operation, after the sludge and water are mixed to form slurry, when the turret 01 turns the slurry over by the spiral blades on its outer wall, the spiral blades can cause the slurry inside the inner cylinder 11 to flow upward. After the slurry flows out from the top of the inner cylinder 11, it flows down along the outer wall of the inner cylinder 11. The slurry that flows down then flows into the inner cylinder 11 from the space left between the lower end of the inner cylinder 11 and the bottom tank 15. This allows the slurry to turn up and down along the axis of the inner cylinder 11 around the side wall and achieve circulation, thereby ensuring that all the slurry is turned over to mix with the flocculant and treatment agent.

[0048] Through observation Figures 2 to 11 An exemplary working process for filtering mud, as shown in the figure, is as follows:

[0049] The processing device also includes two filters 12, which are stacked on top of each other. A top cover 13 can be fastened to the upper filter 12. A glass window 14 is provided at the top end of the top cover 13. The diameter of the filter holes on the upper filter 12 is larger than that on the lower filter 12. The lower filter 12 can be fastened in the bottom ring 10. The inner sides of the two filters 12 are attached to the inner cylinder 11. During operation, the volume of the mud is lower than that of the lower filter 12. As the mud churns, the mud flowing down the outer wall of the inner cylinder 11 will pass through the two filters 12 in sequence. The upper filter 12 will block larger stones, wood chips and other impurities in the mud, while the lower filter 12 will block smaller stones, wood chips and other impurities in the mud. The two-stage filtration by the two filters 12 can effectively filter out stones, wood chips and other impurities in the mud.

[0050] Meanwhile, during use, the top cover 13 is placed on the filter screen 12 located above, which can seal the mud treatment environment and prevent mud from splashing out. At the same time, the progress and effect of mud treatment inside can be observed through the glass window 14.

[0051] The two filters 12 can be removed from the bottom ring 10, so that the filtered stones, wood chips and other impurities can be taken away and disposed of after use.

Claims

1. A sludge treatment process, characterized in that, The process includes the following steps: Step 1: Add the sludge to the treatment device and dilute it with clean water to obtain slurry; Step 2: Stir the mud and add flocculant and treatment agent during the stirring process to obtain mixed mud; Step 3: Filter the mixed sludge and allow it to settle. Step 4: Dewater the settled sludge and then separate the dewatered sludge and water for purification. The processing device includes a bottom barrel (15), a turret (01) rotatably connected to the bottom barrel (15) and capable of rotating around the axis of the bottom barrel (15), a gear ring (03) fixed on the turret (01), and a gear (09) rotatably connected to the bottom barrel (15) and meshing with the gear ring (03). The turret (01) has an inner cavity (02) inside, and both the outer wall of the turret (01) and the side wall of the inner cavity (02) are conical structures; The top of the turret (01) is an arc wall (08) that extends outward in a horizontal direction; The processing device also includes a circular plate (04) fixed on the bottom barrel (15) and sealing the inner cavity (02) from below, and an inner tower (05) fixed on the circular plate (04) and connected to the pipe inside. The inner tower (05) has multiple leakage holes (06) on its side wall and is located in the inner cavity (02). Another spiral blade with the same rotation direction as the spiral blade fixed on the outer wall of the turret (01) is fixed on the side wall of the inner cavity (02).

2. The sludge treatment process according to claim 1, characterized in that: The flocculant is selected from one or more of polyaluminum chloride flocculants and polyacrylamide flocculants.

3. The sludge treatment process according to claim 1, characterized in that: The treatment agent in step two is a sludge conditioner.

4. The sludge treatment process according to claim 1, characterized in that: The top of the inner tower (05) extends through the top of the turret (01), and a cover (07) is fixed to the top of the inner tower (05), with the cover (07) located above the top of the turret (01).

5. The sludge treatment process according to claim 4, characterized in that: The processing device also includes a bottom ring (10) fixed on the bottom bucket (15) and an inner cylinder (11) fixed in the bottom ring (10) and fitted on the turret (01), with a space left between the lower end of the inner cylinder (11) and the bottom bucket (15) for sludge to pass through.

6. The sludge treatment process according to claim 5, characterized in that: The processing device also includes two stacked filters (12) and a top cover (13) that can be fastened to the upper filter (12) and has a glass window (14). The diameter of the filter holes on the upper filter (12) is larger than that of the lower filter (12), and the lower filter (12) can be fastened to the bottom ring (10).

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