Water-saving and emission-reducing integrated system for large-scale water diversion project construction plant

Abstract

The utility model relates to a water-saving and emission-reducing integrated system for a large-scale water diversion project construction plant, which comprises a rainwater, domestic sewage, cavern wastewater, sandstone flushing wastewater and concrete mixing flushing wastewater collecting module, the rainwater collecting module is communicated with a rainwater settling pond, the domestic sewage collecting module is communicated with a domestic sewage treatment facility, and the concrete mixing flushing wastewater collecting module is communicated with a concrete mixing flushing wastewater collecting module. The cavern wastewater collection module, the gravel material washing wastewater collection module and the concrete mixing washing wastewater collection module are respectively communicated with the multi-stage treatment sedimentation tank, and the rainwater sedimentation tank, the domestic sewage treatment facility and the multi-stage treatment sedimentation tank are respectively communicated with the clear water treatment and reuse module and the sludge treatment and reuse module through a clear water discharge pipeline and a sludge conveying pipeline. The device has the advantages that all kinds of waste water in the construction plant are collected, treated and reused, and waste of water resources is reduced; the clean water tank facilities are intensively constructed, so that the recycling channel is more efficient and concentrated; sludge is intensively treated through a sludge drying facility and is effectively utilized in river channel ecological slope protection construction, and pollutant emission is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of water conservancy and hydropower engineering construction, concretely relates to a water-saving and emission-reducing comprehensive system of large-scale water diversion engineering construction plant area. BACKGROUND

[0002] The wastewater of the water diversion engineering construction plant area can be divided into cave drainage, sand and stone material, concrete mixing and flushing wastewater, construction camp domestic sewage and site rainwater according to different sources. Research shows that the main pollutant of cave drainage during the construction peak period is suspended solids (SS) with a concentration of 100-5000 mg / L and a pH value of 8-10; the SS concentration of sand and stone material processing system flushing wastewater is 40000-70000 mg / L, and the pH value is above 7.7. The wastewater in the construction area generally has problems of high SS concentration and high pH value, and cannot be directly discharged into the surrounding river and lake system.

[0003] At present, the water diversion engineering construction plant area often uses different processes to treat different wastewater sources, and the reclaimed water is directly discharged into the surrounding rivers and lakes or is used in a decentralized manner. There are problems such as dispersed wastewater treatment area, unused rainwater resources, etc. Due to the dispersed wastewater treatment process, decentralized reuse pool, and complex reuse process in the construction plant area, the wastewater is directly discharged into the surrounding ditches after treatment, causing waste of water resources, and the reclaimed water eventually enters rivers and lakes, which may have a serious impact on the ecological environment of the nearby water area. The initial SS of the construction plant area is high after the rain washes the road surface, and direct discharge causes a certain burden on the rivers and lakes, thereby adversely affecting the surrounding water ecological system. The sludge in the construction area also has problems of large volume and less comprehensive utilization. It is also an urgent problem to provide a safe, environmentally friendly, and convenient comprehensive utilization method and approach for sludge. SUMMARY

[0004] The utility model provides a water-saving and emission-reducing comprehensive system of large-scale water diversion engineering construction plant area, which aims to overcome the above-mentioned deficiencies in the prior art.

[0005] The utility model discloses a technical scheme that solves the above technical problems as follows: a water-saving and emission-reducing comprehensive system for large-scale water diversion engineering construction plant area, which comprises a rainwater collecting module, a domestic sewage collecting module, a tunnel wastewater collecting module, a sand and stone material flushing wastewater collecting module and a concrete mixing flushing wastewater collecting module, the rainwater collecting module is communicated with a rainwater sedimentation tank, the domestic sewage collecting module is communicated with a domestic sewage treatment facility, the tunnel wastewater collecting module, the sand and stone material flushing wastewater collecting module and the concrete mixing flushing wastewater collecting module are respectively communicated with a multistage treatment sedimentation tank, the rainwater sedimentation tank, the domestic sewage treatment facility and the multistage treatment sedimentation tank are respectively communicated with a clear water treatment and reuse module and a sludge treatment and reuse module through a clear water discharge pipeline and a sludge conveying pipeline, the clear water treatment and reuse module comprises a clear water tank and a reuse pipe network for conveying clear water in the clear water tank to a downward concave green land, an artificial wetland or an ecological pond, and the sludge treatment and reuse module comprises a sludge drying facility and an ecological bag or a slope protection bag for packaging dried sludge produced by the sludge drying facility.

[0006] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0007] Further, the rainwater collecting module comprises a rainwater side ditch arranged under a low point of a surrounding wall of the construction plant area and a water intercepting ditch arranged at the lowest part of the rainwater side ditch, and one end of the water intercepting ditch is communicated with the rainwater sedimentation tank.

[0008] Further, the rainwater sedimentation tank is also communicated with the reuse pipe network through a shunt pipeline.

[0009] Further, the domestic sewage collecting module comprises a kitchen wastewater discharge pipeline and a toilet wastewater discharge pipeline in the construction site, and the kitchen wastewater discharge pipeline and the toilet wastewater discharge pipeline are both communicated with a liquid inlet end of the domestic sewage treatment facility.

[0010] Further, the tunnel wastewater collecting module, the sand and stone material flushing wastewater collecting module and the concrete mixing flushing wastewater collecting module all comprise a wastewater collecting and discharging pipeline arranged in a corresponding area, and the wastewater collecting and discharging pipeline is communicated with a liquid inlet end of the multistage treatment sedimentation tank.

[0011] Further, a water pump is arranged on the clear water discharge pipeline.

[0012] Further, a sludge pump is arranged on the sludge conveying pipeline.

[0013] Further, the slope protection bag is filled with a green substrate mixed by inorganic dried sludge, river sand and peat soil, and the ecological bag is filled with sterilized organic dried sludge, and the slope protection bag and the ecological bag after being filled are stacked and placed on a river bank slope and grass seeds are sowed to form an ecological bank protection structure.

[0014] Further, the adjacent staggered and stacked ecological bags are provided with pawl connecting buckles.

[0015] Further, the clean water pool is also communicated with the toilet water pipeline, the sand and gravel flushing water pipeline, the concrete mixing water pipeline and / or the field road flushing water pipeline in the construction plant area through the reuse pipeline.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model reuses the various waste and polluted water in the large water diversion project construction plant area after comprehensive treatment, collects, treats and stores the rainwater and waste and polluted water, and constructs the clean water pool facilities in a centralized manner, so that the reuse channel is more efficient and centralized; the rainwater is deposited in the rainwater sedimentation pool and then is sent into the clean water pool for storage and standby or is directly used for artificial wetland water supplement or landscape greening water, which not only can reduce the direct discharge of initial rainwater to the vegetation near the outlet, but also can reduce the suspended solids (SS) in the rainwater, realizes economic and ecological environment double friendship; the sludge in the construction area is collected in one place, the pollution caused by the random piling of the sludge to the environment is reduced, the sludge is treated by the sludge drying facility in a centralized manner, the sludge with weak fertility is used as the slope protection bag filler and is placed in the bottom layer of the ecological slope protection, the sludge with strong fertility is used as the ecological bag to supply nutrients to plants, realizes the resource utilization of the sludge, not only reduces the environmental pollution, but also has the effect of reducing the pollutants in the initial rainwater, is economic and environmentally friendly; the clean water in the clean water pool can be used for construction and production activities again, realizes the intensive, saving and fine management and efficient utilization of the water resources in the field area. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A water saving and emission reduction comprehensive system for a large water diversion project construction plant area is provided in the utility model;

[0019] Figure 2 For the use Figure 1 A schematic view of an ecological revetment structure formed by bagging and stacking the dried sludge generated by the system shown in the figure in the river bank.

[0020] In the drawings, the component list represented by each reference numeral is as follows:

[0021] 1, rainwater collection module; 2, domestic sewage collection module 3, cave waste water collection module; 4, sand and gravel flushing waste water collection module; 5, concrete mixing flushing waste water collection module; 6, rainwater sedimentation pool; 7, domestic sewage treatment facility; 8, multi-stage treatment sedimentation pool; 9, clean water pool; 10, concave green land; 11, artificial wetland; 12, ecological pond; 13, ecological bag; 14, slope protection bag; 15, diversion pipeline. DETAILED DESCRIPTION

[0022] The principles and characteristics of the present application are described below in conjunction with the accompanying drawings, and the examples are used to explain the present application and are not intended to limit the scope of the present application.

[0023] In the description of the present application, if the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "top", "bottom", "inner", "outer" are used, the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application.

[0024] As shown in Figure 1 The present application provides a water-saving and emission-reducing comprehensive system for a large-scale water diversion engineering construction site, which comprises a rainwater collecting module 1, a domestic sewage collecting module 2, a cave wastewater collecting module 3, a sand and stone material flushing wastewater collecting module 4, and a concrete mixing flushing wastewater collecting module 5, the rainwater collecting module 1 is communicated with a rainwater sedimentation tank 6, the domestic sewage collecting module 2 is communicated with a domestic sewage treatment facility 7, the cave wastewater collecting module 3, the sand and stone material flushing wastewater collecting module 4, and the concrete mixing flushing wastewater collecting module 5 are respectively communicated with a multi-stage treatment sedimentation tank 8, the rainwater sedimentation tank 6, the domestic sewage treatment facility 7, and the multi-stage treatment sedimentation tank 8 are respectively communicated with a clear water treatment and reuse module and a sludge treatment and reuse module through clear water discharge pipelines and sludge conveying pipelines, the clear water treatment and reuse module comprises a clear water tank 9 and a reuse pipe network for conveying clear water in the clear water tank 9 to a downward concave green land 10, an artificial wetland 11, or an ecological pond 12, and the sludge treatment and reuse module comprises a sludge drying facility and an ecological bag 13 or a slope protection bag 14 for packaging dry sludge produced by the sludge drying facility.

[0025] It should be noted that the domestic sewage treatment facility and the sludge drying facility are both well-known facilities to those skilled in the art, and the specific structure and principle are not described here. When the sludge is dried and treated, the sludge corresponding to the domestic sewage can be used as organic fertilizer due to its high organic matter content, so it can be treated separately and appropriately disinfected (disinfected during drying or disinfected after drying) and then loaded into the ecological bag, and the sludge produced during the treatment of the remaining sewage or wastewater has less organic matter content, and the sludge obtained after drying is inorganic sludge, which can be loaded into the slope protection bag as the bottom layer of the bank slope to prevent the bank slope itself from being eroded by river water.

[0026] In the above comprehensive utilization system, the rainwater sedimentation tank comprises a rainwater inlet pipe, the domestic sewage treatment facility comprises a domestic sewage inlet pipe and an outlet pipe, the multi-stage sedimentation tank comprises a dosing chamber and a plate-and-frame filter press, the dosing chamber helps flocculation and sedimentation of SS in the wastewater, and the filter press helps dewatering of the waste residue, which can be used as a flood control sandbag in the construction site and a filler under the artificial wetland, the clean water tank comprises inlet and outlet pipes, facilitating reuse of the waste and sewage in the construction site.

[0027] In an embodiment of the present application, the rainwater collection module 1 comprises a rainwater side ditch arranged under the low point of the construction site and a water intercepting ditch arranged at the lowest point of the rainwater side ditch, one end of the water intercepting ditch is communicated with the rainwater sedimentation tank 6, and the size of the side ditch and the water intercepting ditch is calculated according to the rainstorm intensity formula of the area where the construction is arranged.

[0028] It should be noted that when the rainwater is collected and reused, a rainwater side ditch is arranged under the low point of the site, and a water intercepting ditch is arranged at the lowest point, so that the rainwater can be smoothly collected and enter the water intercepting ditch by gravity, and then enter the rainwater sedimentation tank. After the sedimentation treatment of the sedimentation tank, the SS in the initial rainwater is reduced. On sunny days, the road surface cleaning wastewater can also flow into the rainwater collection system and enter the rainwater primary sedimentation tank for treatment. After treatment, part of the rainwater enters the clean water tank for storage or part of it is discharged into the artificial wetland or ecological pond, the sunken greenbelt, and then is discharged into the nearby river and lake system after being filtered by the greenbelt. The artificial wetland or ecological pond can also be used as a storage facility for water resources other than the clean water tank. In the rainy and less polluted seasons, clean water can be pumped from the artificial wetland or ecological pond for reuse if necessary. The shunt pipeline has a bidirectional water conveying function, that is, it can send water from the rainwater sedimentation tank to the artificial wetland or ecological pond, and also can send water from the artificial wetland or ecological pond to the rainwater sedimentation tank in the reverse direction if necessary, and the water after being deposited in the sedimentation tank is sent to the clean water tank for storage for concrete mixing, toilet flushing, site road washing, and green plant irrigation.

[0029] In an embodiment of the present application, the domestic sewage collection module 2 comprises a kitchen wastewater discharge pipeline and a toilet wastewater discharge pipeline in the construction site, and the kitchen wastewater discharge pipeline and the toilet wastewater discharge pipeline are communicated with the liquid inlet end of the domestic sewage treatment facility 7.

[0030] It can be understood that the domestic sewage mainly refers to the kitchen and toilet wastewater collected in the construction camp, which enters the domestic sewage treatment facility through the pre-embedded pipeline, and then enters the clean water tank after being treated, and the sludge can be used as a base fertilizer for the artificial wetland after being retted, or can be used as an ecological bag filler after being dried. The size of the clean water tank is set according to the scale of various wastewater treatment.

[0031] In an embodiment of the utility model, the chamber wastewater collection module 3, sand and stone material flushing wastewater collection module 4 and concrete mixing flushing wastewater collection module 5 all include the wastewater collection discharge pipeline arranged in the corresponding area, and the wastewater collection discharge pipeline is communicated with the liquid inlet end of the multistage treatment sedimentation tank 8.

[0032] It should be noted that the chamber drainage contains a large amount of suspended solids (SS), which is collected by the pipeline and then enters the multistage treatment sedimentation tank and then enters the clean water tank. The sand and stone material flushing wastewater is collected by the pipeline and then enters the multistage treatment sedimentation tank and then enters the clean water tank. The concrete mixing flushing wastewater is collected by the pipeline and then enters the multistage treatment sedimentation tank and then enters the clean water tank. The water in the clean water tank can be reused to the sand and stone flushing and concrete mixing after meeting the relevant standards. The lower concave green land and the artificial wetland or the ecological pond base can be paved with planting soil and gravel to assist drainage, and the site can be planted with water-resistant ornamental plants.

[0033] In an embodiment of the utility model, a water pump is arranged on the clean water discharge pipeline. A sludge pump is arranged on the sludge conveying pipeline.

[0034] In an embodiment of the utility model, the clean water tank 9 is also communicated with the construction plant area toilet water pipeline, sand and stone flushing water pipeline, concrete mixing water pipeline and / or site area road flushing water pipeline through the reuse pipeline.

[0035] In an embodiment of the utility model, as shown in Figure 2 The ecological bag 13 is filled with the disinfected organic dry sludge, and the filled ecological bag 13 and slope protection bag 14 are stacked and laid on the river bank slope and sowed with grass seeds to form an ecological bank protection structure. The ecological bags 13 laid adjacent to each other are provided with pawl connecting buckles.

[0036] It should be noted that the sludge obtained by treating the rain and sewage can be used as the filling material of the ecological bag or slope protection bag after dry treatment, used as the base to tamp the slope and used to build the ecological slope protection. The specific implementation of the ecological slope protection is as follows: first, the slope surface needs to be fixed by anchor rods, and the basic working procedure of anchor rod construction can be positioning, hole forming, grouting and setting anchor rod. The grouting requires that the mortar should be full, and the cement mortar should be poured to the hole bottom, and there should be no phenomenon of empty inside and full outside; the size of the ecological bag and slope protection bag can be the conventional size of 40cm*80cm, the slope protection bag filling green substrate can be mixed according to 5 parts of inorganic sludge, 2 parts of river sand and 3 parts of peat soil, and the ecological bag uses disinfected organic domestic sludge; the ecological bag and slope protection bag sealing methods generally have two kinds: one is to use a handheld sewing machine long sealing, and the other is to use a plastic round sealing. When the ecological bag and slope protection bag are laid, as shown in Figure 2As shown, should not collapse not to blow out, the slope of the code should be flat, undulating not more than 5 cm. Between each 2 adjacent ecological bag placed a pawl connecting buckle, to increase the internal friction of the ecological bag. During construction, leaving the drainage port, about 7-8 square meters using ecological bag, ecological bag surface sowing selected grass seeds (dog tooth grass, rye grass).

[0037] The basic working principle of the utility model is: to establish an effective rainwater collection system, to ensure that the site is not washed by rainwater by setting a ditch water interception ditch, and rainwater in the site will not accumulate on the road surface for a long time in heavy rain weather. There are often large vehicles transporting sand and gravel in the site, which results in more sand and gravel particles and cement on the road surface of the site. The road surface washing wastewater can flow into the ditch according to its own gravity and be collected in the rainwater sedimentation tank on sunny days. The rainwater sedimentation tank can effectively treat SS in the rainwater on rainy days, the effluent enters the clean water tank, and the sunken green land and artificial wetland or ecological pond are supplemented. After multi-stage dosing and sedimentation treatment, the tunnel, sand and gravel and concrete mixing wastewater are uniformly introduced into the clean water tank, the clean water tank concentrates the effluent after treatment of various wastewaters in the site, and rainwater and waste and sewage in the site are reused more conveniently.

[0038] The above merely describes preferred embodiments of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site, characterized in that, The rainwater collecting module (1), the domestic sewage collecting module (2), the cave wastewater collecting module (3), the sand and stone material flushing wastewater collecting module (4) and the concrete mixing flushing wastewater collecting module (5), the rainwater collecting module (1) is communicated with the rainwater sedimentation tank (6), the domestic sewage collecting module (2) is communicated with the domestic sewage treatment facility (7), the cave wastewater collecting module (3), sand and stone material flushing wastewater collecting module (4) and concrete mixing flushing wastewater collecting module (5) are communicated with multi-stage treatment sedimentation tank (8) respectively, the rainwater sedimentation tank (6), domestic sewage treatment facility (7) and multi-stage treatment sedimentation tank (8) are communicated with clear water treatment and reuse module and sludge treatment and reuse module through clear water discharge pipeline and sludge conveying pipeline respectively, the clear water treatment and reuse module includes clear water tank (9) and reuse pipe network for conveying clear water of the clear water tank (9) to the concave greenbelt (10), artificial wetland (11) or ecological pond (12), the sludge treatment and reuse module includes sludge drying facility and ecological bag (13) or slope protection bag (14) for packaging dry sludge produced by the sludge drying facility.

2. The water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site according to claim 1, characterized in that, The rainwater collecting module (1) includes rainwater side ditch arranged under the low point fence of construction plant area and water intercepting ditch arranged at the lowest part of the rainwater side ditch, one end of the water intercepting ditch is communicated with the rainwater sedimentation tank (6).

3. The water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site according to claim 1, characterized in that, The rainwater sedimentation tank (6) is also communicated with the reuse pipe network through the shunt pipeline (15).

4. The water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site according to claim 1, characterized in that, The domestic sewage collecting module (2) includes kitchen wastewater discharge pipeline and toilet wastewater discharge pipeline in the construction site, the kitchen wastewater discharge pipeline and the toilet wastewater discharge pipeline are communicated with the liquid inlet end of the domestic sewage treatment facility (7).

5. The water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site according to claim 1, characterized in that, The cave wastewater collecting module (3), sand and stone material flushing wastewater collecting module (4) and concrete mixing flushing wastewater collecting module (5) all include wastewater collecting and discharging pipeline arranged in the corresponding area, the wastewater collecting and discharging pipeline is communicated with the liquid inlet end of the multi-stage treatment sedimentation tank (8).

6. The water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site according to claim 1, characterized in that, The water pump is arranged on the clear water discharge pipeline.

7. The water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site according to claim 1, characterized in that, The sludge pump is arranged on the sludge conveying pipeline.

8. The water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site according to claim 1, characterized in that, The slope protection bag (14) is filled with the green substrate mixed by inorganic dry sludge, river sand and peat soil, the ecological bag (13) is filled with the disinfected organic dry sludge, the slope protection bag (14) and the ecological bag (13) after bagging are stacked and placed on the river bank slope and the grass seeds are sowed to form the ecological bank protection structure.

9. The water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site according to claim 8, characterized in that, The ratchet connection buckle is arranged between the adjacent and staggered ecological bags (13).

10. The water-saving and emission-reducing comprehensive system for a large-scale water diversion project construction site according to any one of claims 1 to 9, characterized in that, The clear water tank (9) is also communicated with the toilet water pipeline, sand and stone flushing water pipeline, concrete mixing flushing water pipeline and / or field area road flushing water pipeline of the construction plant area through the reuse pipeline.

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