CN216273431U

CN216273431U - Power station grit aggregate waste water treatment equipment

Info

Publication number: CN216273431U
Application number: CN202120177327.1U
Authority: CN
Inventors: 李镇广; 罗龙聪; 匡继勇; 陈钢; 邵明
Original assignee: Sichuan Dowell Filtration Equipment Co ltd
Current assignee: Sichuan Dowell Filtration Equipment Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2022-04-12
Anticipated expiration: 2031-01-22

Abstract

The utility model discloses a hydropower station sandstone aggregate production wastewater treatment device, which relates to the technical field of sewage treatment devices and comprises an on-site wastewater discharge ditch, a conical bottom wastewater collection pool, a double-stirring tank dosing device, a high-position concentration tank, a solid-liquid separation system, a filtrate transition pool and a clean water pool, wherein the on-site wastewater discharge ditch is connected with the conical bottom wastewater collection pool, and the bottom of an accident pool is provided with a wastewater pump; two agitator tanks charge device sets up by solid-liquid separation system's operation platform, and solid-liquid separation system filters the back filtrate from flowing into filtrating transition pool, the clean water basin is located filtrating transition pool output, high-order concentrated jar upper end is equipped with pipeline and clean water basin intercommunication, adopts the above-mentioned partial combination to form grit aggregate waste water treatment's equipment, realizes that power station grit aggregate production site waste water collects completely, prevents to arrange the polluted environment because of waste water is outer.

Description

Power station grit aggregate waste water treatment equipment

Technical Field

The utility model relates to the technical field of sewage treatment equipment.

Background

The hydroelectric power generation has the characteristics of cleanness, high efficiency and stable and sufficient energy supply. China has superior water energy resources, and the hydropower station construction is vigorously developed by China. Hydropower stations are generally located in mountainous canyons, and a large amount of sandstone aggregates required by the construction of the hydropower stations need to be produced on site. The processes of aggregate washing, sand making, dust fall and the like in the hydropower station sandstone aggregate production all consume a large amount of water, so that the problem of wastewater pollution is caused. If the wastewater is directly discharged, the ecological environment of a construction area is damaged, river channel siltation is caused, the water quality of the downstream of the river channel is influenced, and the living environment of aquatic organisms is damaged, so that the wastewater produced by the sandstone aggregate of the hydropower station can be recycled or discharged after being treated to reach the standard.

The traditional hydropower station sandstone aggregate production wastewater treatment process mainly adopts a precipitation theory, and a horizontal sedimentation tank is built to complete wastewater collection and precipitation. The sedimentation tank not only occupies a large area, but also the deposited sludge is easy to deposit at the bottom of the tank and needs to be stopped and cleaned regularly; in the traditional hydropower station sandstone aggregate production wastewater treatment process, when equipment in a wastewater treatment system is in failure and needs to be stopped for maintenance, the production wastewater is stored everywhere to influence the normal production condition of sandstone aggregates; the solid-liquid separation system of the traditional hydropower station sandstone aggregate production wastewater treatment process separates filtrate and directly discharges the filtrate to a clean water tank. Because the filtrate just treated by the solid-liquid separation system is turbid and has high solid content, the sludge is deposited at the bottom of the clean water tank when the filtrate is directly discharged to the clean water tank, and the clean water tank needs to be periodically desilted, so that the normal production of the sandstone aggregate is influenced; when the dosing device of the traditional hydropower station sandstone aggregate production wastewater treatment process breaks down and needs to be overhauled, the dosing device can cause the whole wastewater treatment system to stop running. And the medicine adding device needs to be operated by a specially-assigned person. When the traditional hydropower station sandstone aggregate production wastewater treatment process adopts the high-level concentration tank to carry out solid-liquid separation on wastewater, the high-level concentration tank wastewater and flocculation reagent mixed flow groove has a complex structure, and sludge is easy to deposit, so that the normal use of the high-level concentration tank is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to reduce sludge deposition and improve sewage treatment efficiency, the hydropower station sandstone aggregate production wastewater treatment equipment is disclosed, sludge deposition is reduced, and the sewage treatment effect is good.

The utility model specifically adopts the following technical scheme for realizing the purpose:

a hydropower station sandstone aggregate production wastewater treatment device comprises an on-site wastewater discharge ditch, a conical bottom wastewater collection pool, a double-stirring-tank dosing device, a high-position concentration tank, a solid-liquid separation system, a filtrate transition pool and a clean water pool, wherein the on-site wastewater discharge ditch is connected with the conical bottom wastewater collection pool, and a wastewater pump is arranged at the bottom of an accident pool; the double-stirring-tank dosing device is arranged beside an operation platform of the solid-liquid separation system, filtrate filtered by the solid-liquid separation system flows into a filtrate transition tank automatically, the clean water tank is arranged at the output end of the filtrate transition tank, a sludge pump is arranged on the filtrate transition tank, the cone bottom wastewater collection tank is connected with the high-position concentration tank through a pipeline, and the upper end of the high-position concentration tank is provided with a pipeline communicated with the clean water tank.

By adopting the scheme, the equipment for treating the sandstone aggregate production wastewater is formed by combining the parts, so that the complete collection of the wastewater in the hydropower station sandstone aggregate production site is realized, and the environmental pollution caused by the wastewater discharge is prevented; the conical-bottom wastewater collection tank avoids dredging of the flat-bottom wastewater collection tank due to sludge deposited at the bottom of the tank, so that continuous operation of sandstone aggregate production is influenced; the double-stirring-tank dosing device can keep continuous work, and the high-position concentration tank has the functions of sludge concentration and separation of sludge and clarified water, so that the effective treatment amount of the waste water produced by the sandstone aggregate is reduced; the filtrate transition tank further separates a little turbid filtrate generated in the early stage of the solid-liquid separation system, and prevents sludge from entering the clean water tank. The mud cake after solid-liquid separation can be used as greening soil in mountainous areas with more stones and less soil, and sludge recycling is realized.

Furthermore, the height of the pool surface of the wastewater collecting pool with the conical bottom is lower than that of the field wastewater discharge ditch.

Through above-mentioned scheme, make things convenient for sewage to carry out the overflow.

Furthermore, an accident pool is arranged beside the cone bottom waste water collecting pool, and a waste water overflow channel is arranged between the accident pool and the cone bottom waste water collecting pool for communication.

Through above-mentioned scheme, accident pool avoids leading to the normal operating of grit aggregate production because waste water treatment system equipment trouble, and accident sewage can link up into awl end waste water collecting tank along waste water overflow.

Further, two agitator tank charge device is including locating 2 agitator tanks and 2 dosing pumps of high-order concentrated jar one side, liquid medicine passes through in the dosing pump carries high-order concentrated jar mixing tank through adding in the dosing pump.

Through above-mentioned scheme, set up the agitator tank and conveniently stir the liquid medicine, set up the dosing pump simultaneously, conveniently add the flocculating agent.

Further, the stirring tank and the dosing pump are arranged right opposite to the operation platform of the solid-liquid separation system.

Through the scheme, the arrangement position can reduce the labor intensity of operators, facilitate the operation of workers, facilitate the observation of the medicine adding condition and reduce the manual quota.

Furthermore, a water baffle is arranged at the liquid outlet of the filtrate transition tank.

Through the scheme, the water baffle is arranged at the water outlet of the filtrate transition tank, so that sludge in the filtrate transition tank has the function of vertical flow type sedimentation.

Furthermore, the outer wall of the mixed flow groove of the high-position concentration tank is of a coarse pitch spiral structure.

Through the scheme, the high-position concentration tank mixed flow groove surrounds the outer wall of the flow stabilizing cylinder, the large-pitch spiral structure enables the wastewater in the mixed flow groove to generate strong turbulence in the process of flowing into the flow stabilizing cylinder, and the flocculating agent and the wastewater which are injected into the mixed flow groove are quickly and fully stirred and mixed, so that the flocculating agent and the wastewater are fully reacted; due to the large-pitch spiral structure of the mixing tank, the waste water in the mixing tank has high flow speed and a plurality of small vortexes are generated, and the sludge is prevented from depositing in the mixing tank.

The utility model has the following beneficial effects:

1. the utility model has simple structure, and the wastewater automatically flows into the cone-bottom wastewater collecting tank, the accident tank and the clean water tank in the whole wastewater treatment process, thereby saving energy consumption;

2. the accident pool can temporarily store the wastewater produced by the sandstone aggregate in the maintenance process of the wastewater treatment system equipment, and maintain the normal operation of the sandstone aggregate production;

3. the filtrate after being filtered by the solid-liquid separation system is directly discharged into the filtrate transition tank, and the filtrate with larger sludge content at the initial stage of filtration is precipitated in the filtrate transition tank, and the clarified filtrate flows into the clean water tank, so that the sludge deposition in the clean water tank is avoided.

Drawings

FIG. 1 is a flow diagram of a wastewater treatment process of the present invention;

FIG. 2 is a top view of the cone bottom wastewater collection basin and accident pool combination of the present invention;

FIG. 3 is a top plan view of the solid-liquid separation system and drug adding device arrangement of the present invention;

FIG. 4 is an isometric view of the high-level thickening tank configuration of the present invention;

FIG. 5 is a top view of the clean water basin and filtrate transition tank combination of the present invention;

the symbols in the drawings illustrate that: 1. a cone bottom wastewater collection tank; 2. an accident pool; 3. a double-stirring tank dosing device; 4. a high-level concentration tank; 5. a solid-liquid separation system; 6. a filtrate transition tank; 7. a clean water tank; 8. a waste water discharge ditch; 9. a wastewater overflow drain; 10. a waste water pump; 11. a stirring tank; 12. a dosing pump; 13. an operating platform; 14. a mixing trough; 15. a flow stabilizing cylinder; 16. a water baffle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Example 1

As shown in fig. 1 to 5, the embodiment provides a hydropower station sandstone aggregate production wastewater treatment device, which comprises an on-site wastewater discharge ditch 8, a conical bottom wastewater collection pool 1, a double-stirring tank dosing device 3, a high-level concentration tank 4, a solid-liquid separation system 5, a filtrate transition pool 6 and a clean water pool 7, wherein the outer wall of a mixing tank 14 on the high-level concentration tank 4 is of a large-pitch spiral structure, the on-site wastewater discharge ditch 8 is connected with the conical bottom wastewater collection pool 1, and a wastewater pump 10 is arranged at the pool bottom of an accident pool 2; two agitator tanks charge device 3 sets up by operation platform 13 of solid-liquid separation system 5, and solid-liquid separation system 5 filters the back filtrate from flowing into filtrating transition pond 6, and 6 output ends in filtrating transition pond are located to clean water basin 7, and the sewage pump is installed to 1 bottom of the pool in the waste water collecting tank of awl end, and 1 and the high-order concentrated jar 4 of the waste water collecting tank of awl end pass through the pipe connection, and high-order concentrated jar 4 upper end is provided with pipeline and clean water basin 7 intercommunication. The high-order concentration tank 4 is provided with a mixing groove 14 which surrounds the outer wall of the flow stabilizing cylinder 15 and has a large-pitch spiral structure, so that in the process that the wastewater in the mixing groove 14 flows into the flow stabilizing cylinder 15, intense turbulence is generated, the flocculating agent and the wastewater which are injected into the mixing groove 14 are quickly and fully stirred and mixed, and the flocculating agent and the wastewater are favorably fully reacted; due to the large pitch spiral structure of the mixing trough 14, the waste water in the mixing trough 14 has a strong flow velocity and many small vortexes are generated, and the sludge is prevented from depositing in the mixing trough 14.

Referring to fig. 2 to 5, the height of the surface of the wastewater collecting tank 1 with a conical bottom is lower than that of the field wastewater discharge ditch 8, so that the wastewater can overflow conveniently. An accident pool 2 is arranged beside the cone bottom waste water collecting pool 1, and a waste water overflow ditch 9 is arranged between the accident pool 2 and the cone bottom waste water collecting pool 1 for communication. The accident pool 2 avoids normal operation of sandstone aggregate production caused by equipment failure of a wastewater treatment system, and accident sewage can be introduced into the wastewater collection pool 1 with the conical bottom along the wastewater overflow ditch 9. Two 11 charge devices of agitator tank 3 set up 11 convenient stirring liquid medicines of agitator tank including 2

agitator tanks

11 and 2 dosing pumps 12 of locating 4 one sides of high-order concentration jar, set up simultaneously and add the dosing pump 12, conveniently add the flocculating agent, and liquid medicine is carried in 4 mixing tanks 14 of high-order concentration jar in 11 agitator tanks through adding the dosing pump 12 pump. The stirring tank 11 and the dosing pump 12 are arranged opposite to the operation platform 13 of the solid-liquid separation system 5. The arrangement position can reduce the labor intensity of operators, facilitate the operation of the workers, facilitate the observation of the dosing condition and reduce the manual quota. A water baffle 16 is arranged at the position of the liquid outlet of the filtrate transition pool 6. A water baffle 16 is arranged at the water outlet of the filtrate transition tank 6, so that the sludge in the filtrate transition tank 6 has the function of vertical sedimentation.

A hydropower station sandstone aggregate production wastewater treatment process comprises the following steps:

s1: collecting waste water, wherein the waste water automatically flows to a conical bottom waste water collecting tank 1, the conical bottom waste water collecting tank 1 is subjected to preliminary solid-liquid separation, and sludge-containing sewage at the bottom of the conical bottom waste water collecting tank 1 is pumped to a high-level concentration tank 4;

s2, concentrating and separating the sewage from the high-level concentration tank 4, simultaneously adding a flocculating agent into the high-level concentration tank 4 through a dosing pump 12 by a dosing device 3 of a double stirring tank 11, conveying clear liquid to a clear water tank 7, and pumping sludge to a solid-liquid separation system 5 for secondary solid-liquid separation;

s3: the sludge pump of the high-order concentration tank 4 is sent to a solid-liquid separation system 5, the solid-liquid separation system 5 generates filter residues and filtrate, the filter residues are sent to a stockyard, and the filtrate is sent to a filtrate transition pool 6;

s4: clear water on the filtrate transition tank 6 is conveyed to a clear water tank 7, and sludge at the bottom end is pumped to the high-level concentration tank 4 for reuse. An accident pool 2 is arranged beside the cone bottom wastewater collection pool 1 and used for receiving accident sewage, and the accident sewage is pumped to the cone bottom wastewater collection pool 1 for recycling.

Collecting the sand aggregate production wastewater of the hydropower station into a sewage drainage ditch, and automatically flowing the wastewater into a conical bottom wastewater collection pool 1 from the sewage drainage ditch; the stealthily dirty pump that waste water collecting pit bottom set up promotes waste water to high-order concentrated jar 4 mixing trough 14 in, and the dosing pump 12 of 11 charge device 3 of two agitator tanks simultaneously pumps the flocculation medicament to high-order concentrated jar 4 mixing trough 14. The wastewater and the flocculating agent are stirred and mixed in the mixed flow tank 14 and then enter the steady flow cylinder 15. The wastewater of the flocculation reaction is subjected to solid-liquid separation in the high-level concentration tank 4, and clear water generated by the solid-liquid separation is discharged into a clear water tank 7 from an overflow pipeline of the high-level concentration tank 4; sludge generated by solid-liquid separation is concentrated at the bottom of the high-level concentration tank 4. The sludge pump pumps sludge at the bottom of the high-level concentration tank 4 into the solid-liquid separation system 5 for filtration, and the filtrate after filtration is directly discharged into a filtrate transition tank 6; the mud cake produced after filtration can be used as greening surface soil in mountainous areas with more stones and less soil. And after the filtrate is solid and liquid again in the transition tank, the sludge with large specific gravity is deposited at the bottom of the filtrate transition tank 6. The filtrate is separated from the clear water in a filtrate transition tank 6. The separated clean water flows into the clean water tank 7.

When the wastewater treatment system breaks down in operation, the production wastewater flows into the accident pool 2 from the wastewater collection pool 1 with the conical bottom in the fault maintenance process, so that the normal operation of the sandstone aggregate production is ensured. And when the fault of the wastewater treatment system is eliminated, the wastewater in the accident pool 2 is pumped into the conical bottom wastewater collection pool 1 by a pump.

When the double-stirring tank 11 dosing device 3 works normally, only one stirring tank 11 is used for stirring the medicament and one dosing pump 12 is used for providing the flocculation medicament for the wastewater treatment system. When the working stirring tank 11 or the dosing pump 12 breaks down, the standby equipment can be started to work, and the normal operation of the wastewater treatment is ensured. The double stirring tanks 11 are provided with the dosing device 3 beside the operation platform 13 of the solid-liquid separation system 5, and the dosing device can be operated by the operators of the solid-liquid separation system 5 simultaneously, so that the labor cost is reduced.

The flow of the large-pitch spiral mixing tank 14 causes the waste water and the flocculating agent to generate violent turbulence in the process of flowing into the flow stabilizing cylinder 15, so that the waste water and the flocculating agent are fully stirred and mixed, and the sludge is prevented from being deposited in the mixing tank 14.

And after the filtrate in the filtrate transition tank 6 is separated from the clear water, the sludge is deposited at the bottom of the filtrate transition tank 6. Clear water flows into the clear water tank 7 automatically, and sludge is prevented from depositing in the clear water tank 7. Because the volume of the filtrate transition tank 6 is small, the sludge at the bottom of the filtrate transition tank 6 can be cleaned at proper time.

Finally, it should be noted that: it should be understood that the above examples are only illustrative for illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the scope of the utility model.

Claims

1. The sand aggregate production wastewater treatment equipment for the hydropower station is characterized by comprising an on-site wastewater discharge ditch (8), a conical bottom wastewater collection pool (1), a double stirring tank (11), a dosing device (3), a high-level concentration tank (4), a solid-liquid separation system (5), a filtrate transition pool (6) and a clean water pool (7), wherein the on-site wastewater discharge ditch (8) is connected with the conical bottom wastewater collection pool (1), and the pool bottom of an accident pool (2) is provided with a wastewater pump (10); two agitator tanks (11) charge device (3) set up by operation platform (13) in solid-liquid separation system (5), solid-liquid separation system (5) filter back filtrate from flowing into filtrating transition pond (6), clean water basin (7) are located filtrating transition pond (6) output, awl end waste water collecting tank (1) bottom of the pool is equipped with the sewage pump, awl end waste water collecting tank (1) with high-order concentrated jar (4) pass through the pipe connection, high-order concentrated jar (4) upper end is equipped with pipeline and clean water basin (7) intercommunication.

2. The sand and stone aggregate production wastewater treatment equipment for the hydropower station according to claim 1, wherein the height of the pool surface of the conical bottom wastewater collection pool (1) is lower than that of the on-site wastewater discharge ditch (8).

3. The sand and stone aggregate production wastewater treatment equipment for the hydropower station according to claim 1, wherein an accident pool (2) is arranged beside the conical bottom wastewater collection pool (1), and a wastewater overflow ditch (9) is arranged between the accident pool (2) and the conical bottom wastewater collection pool (1) for communication.

4. The sand and stone aggregate production wastewater treatment equipment for the hydropower station according to claim 1, wherein the drug adding device (3) of the double stirring tanks (11) comprises 2 stirring tanks (11) and 2 drug adding pumps (12) which are arranged on one side of the high-position concentration tank (4), and the liquid medicine in the stirring tanks (11) is conveyed to the mixing tank (14) of the high-position concentration tank (4) through the drug adding pumps (12).

5. The hydropower station sandstone aggregate production wastewater treatment equipment according to claim 4, wherein the stirring tank (11) and the dosing pump (12) are arranged opposite to the operation platform (13) of the solid-liquid separation system (5).

6. The hydropower station sandstone aggregate production wastewater treatment equipment according to claim 1, wherein a water baffle (16) is arranged at the position of the liquid outlet of the filtrate transition tank (6).

7. The hydropower station sandstone aggregate production wastewater treatment equipment according to claim 1, wherein the outer wall of the mixing groove (14) of the high-level concentration tank (4) is of a large-pitch spiral structure.