CN216336961U - A mud treatment system based on flocculation combined with geotechnical bag method - Google Patents

Abstract

The utility model provides a mud treatment system based on a flocculation combined geotechnical tube bag method, which comprises a mud separation device system and a mud flocculation system. The mud separation device system includes a trommel screen, a soil collecting pit, a cyclone, a circulation pool, a dewatering screen, and a water pool; the mud flocculation system includes a stirring tank, a treatment tank and a geotechnical tube bag, and the flocculant adding pipeline is connected to the stirring tank. , the treatment tank is similar to the geotechnical tube bag, and the geotechnical tube bag is stacked around the treatment tank; the method is mainly divided into mud separation and flocculant combined with the geotechnical tube bag method for rapid dehydration. Firstly, the traditional process is carried out for solid-liquid separation, and then flocculant is added to the mud containing larger particles and filled into the geotechnical tube bag for rapid dehydration; the utility model also provides the flocculant proportioning scheme involved in the above mud treatment method. The utility model can realize the rapid dehydration and weight reduction of the slag mud, and the dewatered slag can be directly transported or reused, which is efficient and environmentally friendly.

Description

A mud treatment system based on flocculation combined with geotechnical bag method

technical field

The utility model belongs to the field of mud treatment, in particular to a mud treatment system based on a flocculation combined geotechnical tube bag method.

Background technique

Large-scale construction projects often generate a large amount of waste mud that cannot be recycled during the construction process, which not only occupies the construction site, but also damages the surrounding environment. For example, during the construction of large-diameter mud-water shield tunnels, a large amount of waste mud with high moisture content will be produced, which is difficult to transport and seriously affects the land use planning and resource allocation of the construction site. At present, the filter press type plate machine is commonly used for the dewatering treatment of waste mud. However, this method has many restrictive factors. For example, there are certain concentration requirements for mud treatment, and the noise during operation is relatively large. Therefore, in order to solve the problem of a large amount of waste mud accumulation, it is very necessary to find an efficient and environmentally friendly waste mud method.

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is to provide an efficient and environmentally friendly mud treatment system based on the flocculation combined geotechnical tube bag method.

In order to solve the above technical problems, according to one aspect of the present utility model, the utility model provides a mud treatment system based on the flocculation combined geotechnical bag method, which includes a mud separation device system and a mud flocculation system; the mud separation device system It includes trommel screen, soil collecting pit, cyclone, circulating pool, dewatering screen and water pool; the mud flocculation system includes stirring tank, treatment pool and geotechnical tube bag;

The trommel screen is used to receive and separate the initial waste mud, and the soil collecting pit is connected to the trommel screen to collect the large pieces of clay stone initially separated by the trommel screen; the cyclone is connected to the trommel screen through a pipeline for collecting The trommel screen separates the mud and separates the mud again; the circulating pool is connected to the cyclone through the pipeline to receive the separated slurry below 40um, and the dewatering screen is connected to the cyclone to receive the particles above 40um separated by the cyclone. The mud is separated from mud and water again, the stirring tank is used to collect the waste residue and mud after the separation of mud and water by the dewatering screen, and the pool is connected to the dewatering screen for storing the clear liquid separated by the dewatering screen;

The stirring tank is used as a place for adding flocculant, the flocculant adding pipeline is connected with the stirring tank, the stirring tank is connected with the treatment tank, and the treatment tank is used for mud flocculation reaction; The clear liquid is pumped out to the pool; the treatment pool is provided with a submersible sediment pump, which is used to pump the flocculation waste into the geotechnical tube bag.

Preferably, a screening device is provided between the dewatering screen and the stirring tank, and the screening device is used to receive and screen the waste residue and mud after the dewatering screen is separated from the mud and water; the screen aperture is 1 mm.

Preferably, the screening device is connected to the stirring tank, and the particles with a size less than 1 mm obtained by screening are sent to the stirring tank; the particles screened by the screening device with a size greater than 1 mm are sent to the soil collecting pit.

The mud and clean water between the components are transported through the pipeline, and the pipeline can be equipped with a sediment pump or a water pump to provide the transport power according to the needs. Large-sized particles, waste residue, clay, etc. between the components are transported by transfer devices or transfer equipment. For example, solid materials such as particles and waste residues can be transported by material conveyor belts. Preferably, the rolling screen and the collecting pit are connected by a material conveying belt, the dewatering screen and the cyclone are connected by a material conveying belt; the screening device is connected with the collecting pit and the dewatering screen by a material conveying belt .

Compared with the prior art, the beneficial effects produced by the present utility model are:

(1) Pipes are used to transport mud between each device of the system of the present utility model, and solid waste residues and stones are transported by means such as conveyor belts; flocculant is mixed in the process of pumping mud and treated with geotechnical pipe bags, which is relatively The traditional system can achieve faster dehydration and reduction of slag mud, and the noise is small and the impact on the surrounding environment is small.

(2) The geotechnical tube bag has strong applicability to mud with different moisture content and composition. It can be used flexibly with flocculant and can accelerate the full mixing reaction of mud and flocculant. It can be adjusted for different volumes of mud at any time.

(3) Geotechnical tube bags can be stacked at will, with small footprint, convenient outbound transportation, and small requirements for construction sites.

Description of drawings

Fig. 1 is the process flow diagram of the present utility model.

Figure 2 is a sectional view of the geotechnical pipe bag of the present invention.

3 is a plan view of the layout of the mud separation system of the present invention.

FIG. 4 is a diagram of a process method device of the present invention.

Description of reference numerals: 1. Geotechnical pipe bag mud inlet; 2. Geotechnical pipe bag; 3. Soil collection pit; 4. Circulation tank; 5. Treatment tank; 6. Trommel screen; 9. Dehydration sieve; 10. Pool.

Detailed ways

The present utility model will be further described below with reference to specific implementation cases, but the protection scope of the present utility model is not limited to this.

As shown in Figures 1-4, the mud treatment system based on flocculation combined with geotechnical tube bag method of the present invention includes a mud separation device system and a mud flocculation system; the mud separation device system includes a trommel 6, a soil collection pit 3, Cyclone 7, circulation tank 4, dewatering screen 9, water tank 10; the mud flocculation system includes a stirring tank 8, a treatment tank 5 and a geotextile bag 1;

The trommel screen 6 is used to separate the initial waste mud, the soil collection pit 3 is used to collect the large clay stones initially separated by the trommel screen 6, and the cyclone 7 collects the mud separated by the trommel screen and separates the mud again according to the 40um particle standard. The circulating pool 4 receives the slurry below 40um obtained by the separation of the cyclone 7, the dewatering screen 9 separates the slurry of particles above 40um obtained by the separation of the cyclone 7 from the mud and water again, and the stirring tank 8 collects the waste residue and the mud that are initially dehydrated by the dewatering screen 9. , the pool 10 stores the clear liquid separated by the dewatering screen;

The stirring tank 8 is used as a place for adding flocculant. The flocculant adding pipeline is connected to the stirring tank 8. The flocculant is added in the stirring tank 8 and the fully mixed material is sent to the treatment tank 5, and the treatment tank 5 is used for mud flocculation. Reaction, the supernatant liquid of the treatment tank 5 is pumped out to the pool 10 by a water pump; the flocculation waste residue of the treatment tank 5 is pumped into the geotechnical pipe bag 1 by a submersible sediment pump, and the geotechnical pipe bag 1 is used for dehydration again, storing mud to speed up drainage and solidification. knot speed.

As shown in Fig. 1, in a specific embodiment of the present utility model, the sludge discharged from the shield working face is used as the engineering waste mud to be treated, and the sludge discharged from the shield working face first enters the trommel to screen out large The clay blocks and stones are transported into the collecting pit through the material conveyor belt, and the mud separated by the trommel screen is pumped to the PC300 cyclone through the pipeline and pump, and the PC300 cyclone separates the particles above 40um and those below 40um. Slurry, the slurry below 40um overflows from the overflow port and is pumped to the circulating pool through pipes and pumps for use. The slurry in the circulating pool can provide slurry for the synchronous grouting system, and can also send slurry for the muddy water shield;

As shown in Figure 1, the particles above 40um separated by the PC300 cyclone pump are sent to the secondary dewatering screen through the material conveyor belt for mud-water separation, and the clear liquid is transported to the pool through the pipeline for construction site water. The mud is screened (in the screening device, the aperture of the screening device is 1mm), the particles smaller than 1mm in size are sent to the mixing tank through the material conveyor belt, and the particles larger than 1mm in size are sent to the collecting tank through the material conveyor belt. in the pit.

The flocculant is added to the stirring tank filled with the mud residue after preliminary separation. After fully mixing, it is sent to the mud treatment tank through the pipeline for preliminary flocculation reaction. The reaction time is 12-24 hours; The clear liquid is sent to the pool for construction site water, and the flocculation waste residue is pumped into the geotechnical tube bag by the submersible sediment pump. The cross-sectional view of the geotechnical tube bag is shown in Figure 2; after the upper and lower layers of the initial flocculation mud are separated, the interior of the geotechnical tube bag is filled After completion, tie the mud inlet tightly, and perform dehydration treatment again for 3-7 days; when the mud flocculation waste residue in the geotechnical pipe bag is completely dehydrated, the geotechnical pipe bag together with the large pieces of clay and stones in the collecting pit can be transported out or discarded. The soil is used for secondary use, for example, it can be used to make bricks.

FIG. 3 is a plan view of the layout of the mud separation system of the present invention, and FIG. 4 is a diagram of a process method device of the present invention. It can be seen from Fig. 3 and Fig. 4 that the soil collecting pit 3, the circulation tank 4, and the treatment tank 5 in this embodiment are of the same size, and the three are arranged side by side; the size of the pool 10 may be appropriately smaller.

The types of flocculants used can include lime, PAM (polyacrylamide) and PAC (polyaluminum chloride). Based on the quality of the waste pulp, the respective mixing ratios are about 1%-3%, 1‰-3‰, respectively. 2‰-4‰. Preferably, in a specific embodiment of the present invention, the following composite flocculant formula is adopted: 2% lime+2‰PAM (polyacrylamide)+3‰PAC (polyaluminum chloride).

In the process of pumping mud, the utility model incorporates flocculants and uses geotechnical tube bags for treatment, which can achieve faster dehydration and weight reduction of slag mud compared with traditional methods, and has less noise and less impact on the surrounding environment. The geotechnical tube bag used has strong applicability to mud with different moisture content and composition. It can be used flexibly with flocculant and can accelerate the full mixing reaction of mud and flocculant, and can be adjusted for different volumes of mud at any time.

The content described in the embodiments of the present specification is only an enumeration of the realization forms of the inventive concept, and the protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments, and the protection scope of the present invention also extends to the present invention. Equivalent technical means that can be conceived by those skilled in the art according to the concept of the present invention.

Claims (3)

1. A mud treatment system based on flocculation combined geotechnical tube bag method, characterized in that it comprises a mud separation device system and a mud flocculation system; the mud separation device system comprises a trommel, a soil collection pit, a cyclone, a circulating pool, Dewatering screen and water tank; the mud flocculation system includes a stirring tank, a treatment tank and a geotechnical tube bag; The trommel screen is used to receive and separate the initial waste mud, and the soil collecting pit is connected to the trommel screen to collect the large pieces of clay stone initially separated by the trommel screen; the cyclone is connected to the trommel screen through a pipeline for collecting The trommel screen separates the mud and separates the mud again; the circulating pool is connected to the cyclone through the pipeline to receive the separated slurry below 40um, and the dewatering screen is connected to the cyclone to receive the particles above 40um separated by the cyclone. The mud is separated from the mud and water again, the stirring tank is used to collect the waste residue and mud after the mud water separation of the dewatering screen, and the pool is connected to the dewatering screen for storing the clear liquid separated by the dewatering screen; The stirring tank is used as a place for adding flocculant, the flocculant adding pipeline is connected with the stirring tank, the stirring tank is connected with the treatment tank, and the treatment tank is used for mud flocculation reaction; The clear liquid is pumped out to the pool; the treatment pool is provided with a submersible sediment pump, which is used to pump the flocculation waste into the geotechnical tube bag. 2 . The mud treatment system based on flocculation combined with geotextile bag method according to claim 1 , wherein a screening device is arranged between the dewatering screen and the stirring tank, and the screening device is used to receive and screen Dewatering and sieving the waste residue and mud after the separation of mud and water; the screen aperture is 1mm. 3. The mud treatment system based on flocculation combined geotechnical tube bag method according to claim 2, wherein the screening device is connected with the stirring tank, and the particles with a size less than 1mm obtained by screening are sent to the stirring tank; Particles with a size greater than 1 mm obtained by the screening of the device are sent to the soil collecting pit.

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