Water tunnel construction wastewater suspended matter treatment device

Abstract

The utility model provides a water delivery tunnel construction wastewater suspended matter treatment device which comprises a box body and a support, the box body comprises an upper cylinder and a lower cone which are communicated with each other, the upper cylinder is divided into an upper flocculation area and a lower sedimentation area through a partition plate, a central pipe penetrating through the partition plate is arranged in the center of the upper flocculation area and the center of the lower sedimentation area, a flocculation basin is arranged in the upper flocculation area, and a water outlet pipe is arranged in the lower sedimentation area. The bottom of the flocculation basin is communicated with a water inlet pipe, a top overflow port of the flocculation basin is communicated with a top opening of the central pipe, the bottom opening of the central pipe extends to the lower part of the lower settling zone, the top of the lower settling zone is provided with a convex annular plate with a middle opening, and the convex annular plate, the partition plate and the box body form a water collecting tank which is communicated with a water outlet pipe; according to the utility model, the water delivery tunnel construction wastewater suspended solids are subjected to mixing, flocculation and precipitation integrated treatment, the occupied area is smaller, the cost is low, and the efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater suspended matter treatment, in particular to a wastewater suspended matter treatment device for water conveying tunnel construction. BACKGROUND

[0002] In the inter-basin water transfer project, the water conveying tunnel is often constructed by drilling and blasting method and TBM method (full-face hard rock tunnel boring machine).

[0003] The pollutants generated by the drilling and blasting method construction mainly include solid particles such as rock powder, products after explosive explosion, residual drugs that have not completely reacted, and concrete slurry lost in supporting operation. The wastewater generated by TBM tunnel construction mainly comes from TBM cutterhead cooling water (containing stone powder), TBM external circulating water (containing a small amount of oil stains), pump truck and tunnel surrounding rock seepage water, and the main pollutant is suspended matter.

[0004] The suspended solids (SS) of the construction drainage of the water conveying tunnel can be as high as 5000 mg / L, which cannot be directly reused or discharged. In order to meet the requirements of the construction water standard (SS≤100 mg / L), a treatment device needs to be set at the outlet of the tunnel to treat the wastewater to meet the standard and then reuse it. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a wastewater suspended matter treatment device for water conveying tunnel construction, which sets up a suspended matter SS treatment system in a limited construction site to treat the construction wastewater to meet the relevant standards and then reuse it.

[0006] The embodiment of the present application is implemented as follows:

[0007] The wastewater suspended matter treatment device for water conveying tunnel construction provided by the embodiment of the present application is characterized by comprising a box body and a support, the box body comprises an upper cylinder and a lower cone in communication, the box body is vertically supported through the support, the upper cylinder is divided into an upper flocculation zone and a lower sedimentation zone through a partition plate, the center of the upper flocculation zone and the lower sedimentation zone is provided with a center pipe penetrating through the partition plate, a flocculation tank is arranged in the upper flocculation zone, the bottom of the flocculation tank is in communication with a water inlet pipe, the top overflow port of the flocculation tank is in communication with the top opening of the center pipe, the bottom opening of the center pipe extends to the lower part of the lower sedimentation zone, the top of the lower sedimentation zone is provided with a convex ring plate with an intermediate opening, the convex ring plate, the partition plate and the box body form a water collecting groove, and the water collecting groove is in communication with a water outlet pipe.

[0008] In some alternative embodiments, the flocculation tanks are arranged along the circumference of the central pipe, the water inlet pipe is connected to the bottom of the first flocculation tank, the top overflow of the first flocculation tank is connected to the second flocculation tank, the bottom of the second flocculation tank is connected to the third flocculation tank through a water passage, and the connection is sequentially continued until the top overflow of the last flocculation tank is connected to the top opening of the central pipe.

[0009] In some alternative embodiments, the upper part of the subsidence sedimentation area is provided with an inclined pipe sedimentation assembly.

[0010] In some alternative embodiments, the bottom opening of the central pipe is a horn opening, a reflecting plate is arranged below the horn opening, and a water outlet gap is formed between the reflecting plate and the horn opening.

[0011] In some alternative embodiments, the water inlet pipe is sequentially connected from bottom to top by a multi-section pipe mixer, and the sidewall of the multi-section pipe mixer is provided with a dosing opening.

[0012] In some alternative embodiments, the flocculation tank is provided with a stirrer.

[0013] In some alternative embodiments, the top edge of the top opening of the convex ring plate is a sawtooth structure.

[0014] In some alternative embodiments, the bottom center of the lower cone is provided with a sludge discharge pipe.

[0015] The beneficial effects of the present application are as follows: 1. The water tunnel construction wastewater suspended matter treatment device provided by the present application contains a mixed, flocculated, and precipitated integrated treatment process, can effectively treat a water volume of 1-80 m 3 / h or so, and can treat construction wastewater with a suspended matter SS concentration of 5000 mg / L to below 100 mg / L; 2. The area is small, no special civil water pool needs to be made, the construction and operation cost is cheap, and the monitoring is reliable. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 The structural schematic diagram of the embodiments of the present application is shown in the drawings.

[0018] Figure 2A top view of the upper flocculation zone of the embodiment of the present application;

[0019] Figure 3 A structural schematic diagram of the pipeline mixer of the embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0022] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0024] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] The features and performances of the present application will be further described in detail below in combination with the embodiments.

[0026] As Figure 1As shown, the present application provides a suspended matter treatment device for wastewater in water tunnel construction, which comprises a box body and a support 1. The box body comprises an upper cylinder 2 and a lower cone 3 which are connected. The box body is vertically supported by the support. The upper cylinder is divided into an upper flocculation zone 4 and a lower sedimentation zone 5 by a partition. The center of the upper flocculation zone and the lower sedimentation zone is provided with a center pipe 6 which penetrates the partition. A flocculation tank 7 is arranged in the upper flocculation zone. The bottom of the flocculation tank is connected with a water inlet pipe 8. The overflow port of the top of the flocculation tank is connected with the top opening of the center pipe. The bottom opening of the center pipe extends to the lower part of the lower sedimentation zone. The top of the lower sedimentation zone is provided with a convex ring plate 9 with an intermediate opening. The convex ring plate, the partition and the box body form a water collecting groove 10. The water collecting groove is connected with a water outlet pipe 11.

[0027] The flocculation tank is multiple and is arranged along the circumference of the center pipe (see Figure 2 ). The water inlet pipe is connected with the bottom of the first flocculation tank. The overflow port of the top of the first flocculation tank is connected with the second flocculation tank. The bottom of the second flocculation tank is connected with the third flocculation tank through a water passing hole. The flocculation tanks are sequentially connected until the overflow port of the top of the last flocculation tank is connected with the top opening of the center pipe. A stirrer 12 is arranged in each flocculation tank.

[0028] After the wastewater passes through the water inlet pipe, it enters the first flocculation tank from the bottom of the first flocculation tank, overflows from the first flocculation tank to the second flocculation tank, enters the third flocculation tank through the water passing hole at the bottom of the second flocculation tank, and sequentially enters the subsequent flocculation tanks in this way, and flows out of the last flocculation tank to the center pipe. The wastewater is fully mixed by the stirrer in the flocculation tank. At the end of the flocculation process, flocculation is formed.

[0029] The bottom opening of the center pipe is a horn mouth 13. A reflecting plate 14 is arranged below the horn mouth. The reflecting plate and the horn mouth form a water outlet gap. The water outlet of the horn mouth is distributed by the reflecting plate.

[0030] The upper part of the lower sedimentation zone is provided with an inclined pipe sedimentation assembly 15. The water flows into the inclined pipe sedimentation assembly from the lower part to the upper part. The water outlet flows into the water collecting groove through the top convex ring plate. The water collecting groove is connected with the water outlet pipe. The treated water flows out of the water outlet pipe. The sludge flocculation (carrying suspended matter) flows out of the inclined pipe assembly from the upper part to the lower part, falls into the lower cone at the bottom of the lower sedimentation zone, and is periodically discharged from the bottom center sludge discharge pipe of the lower cone.

[0031] Embodiment 1

[0032] In this embodiment, the water inlet pipe is made of a multi-section pipe mixer 16 (see Figure 3 ) which is sequentially connected from the lower part to the upper part. The sidewall of the multi-section pipe mixer is provided with a dosing port 17.

[0033] The inside of the pipeline mixer is a positive and negative spiral structure. The construction wastewater is sequentially fed into the multi-section pipeline mixer by a water pump, and PAC is added into the dosing port of the pipeline mixer (the specific amount is determined according to the field test). The water is fully mixed in the pipeline mixer by the positive and negative spiral structure, and the mixing time and speed gradient meet the relevant specification requirements.

[0034] Example 2

[0035] In this embodiment, the top edge of the top opening of the convex ring plate is a sawtooth structure, and the treated wastewater flows out from the tooth bottom gap to the water collecting tank.

[0036] For the influent water quantity of 1-80 m3 / h and the influent SS concentration of <5000 mg / L, the effluent SS concentration is required to be <100 mg / L. The flocculation zone of the device has three flocculation tanks. The influent pipe is composed of five-section pipeline mixers. In use, the construction wastewater is sequentially fed into the five-section pipeline mixer by a water pump, and PAC is added into the dosing port of the five-section pipeline mixer (the specific amount is determined according to the field test). After being fully mixed in the pipeline mixer by the positive and negative spiral structure, the water flows into the first flocculation tank from the bottom of the first flocculation tank, overflows from the first flocculation tank to the second flocculation tank, and then enters the third flocculation tank in this way, and flows out from the third flocculation tank to the central pipe of the sedimentation zone. PAC is added in the first flocculation tank (the specific amount is determined according to the field test), and the stirrers in each flocculation tank are stirred at the calculated speed. At the end of the flocculation process, flocculation is formed. The effluent of the central pipe is connected to the horn port, and the effluent of the horn port is distributed by the reflecting plate. The water flows into the inclined pipe sedimentation assembly from the bottom to the top, and the effluent of the sedimentation assembly flows into the water collecting tank through the top convex ring plate. An effluent pipe is installed on the water collecting tank, and the treated water flows out from the effluent pipe. The sludge flocculation (entrained suspended solids) flows out from the inclined pipe assembly from the top to the bottom, falls into the lower cone at the bottom of the sedimentation zone, and is periodically discharged through the sludge discharge pipe.

Claims

1. A device for treating suspended solids in wastewater from water conveyance tunnel construction, characterized in that, The utility model provides a water purification device, including box and support, the box includes the upper cylinder and lower cone that communicate, the box is supported vertically through the support, the upper cylinder is divided through the baffle upper flocculation area and lower sedimentation area, the upper flocculation area and the center of lower sedimentary area are equipped with the center tube that passes through the baffle, be equipped with flocculator in the upper flocculation area, the bottom of flocculator and inlet pipe are communicated, and the top overflow of flocculator and the top opening of center tube are communicated, and the bottom opening of center tube extends to the lower part of lower sedimentation area, and the top of lower sedimentation area is equipped with the convex ring plate of intermediate opening, and the convex ring plate, baffle and box form the water collecting tank, and the water collecting tank and outlet pipe are communicated.

2. A device for treating suspended solids in construction wastewater from a water conveyance tunnel according to claim 1, characterized in that The flocculator is multiple, and is arranged along the circumference of the center tube, the inlet pipe and the bottom of the first flocculator are communicated, the top overflow of the first flocculator and the adjacent second flocculator are communicated, the bottom of the second flocculator and the third flocculator are communicated through the water hole, and are communicated in turn, until the top overflow of the last flocculator and the top opening of the center tube are communicated.

3. The suspended solids treatment device for construction wastewater of water conveyance tunnels according to claim 1 or 2, characterized in that, The upper part of the lower sedimentation area is equipped with the inclined pipe precipitation assembly.

4. A device for treating suspended solids in construction wastewater from a water conveyance tunnel according to claim 3, characterized in that The bottom opening of the center tube is a horn mouth, and the reflection plate is arranged below the horn mouth, and the outlet gap is formed between the reflection plate and the horn mouth.

5. The suspended solid treatment device for construction wastewater of water conveyance tunnel according to claim 1 or 4, characterized in that, The inlet pipe is sequentially communicated from bottom to top by the multi-section pipeline mixer, and the sidewall of the pipeline mixer is equipped with the dosing port.

6. A device for treating suspended solids in construction wastewater from water conveyance tunnel construction according to claim 2, characterized in that The flocculator is equipped with the stirrer.

7. A device for treating suspended solids in construction wastewater from water conveyance tunnel construction according to claim 1, characterized in that The top edge of the top opening of the convex ring plate is a sawtooth structure.

8. A device for treating suspended solids in construction wastewater from water conveyance tunnel construction according to claim 1, characterized in that The bottom center of the lower cone is equipped with the sludge discharge pipe.

Images