Process wastewater discharge system

Abstract

The utility model relates to a process wastewater discharge system, belongs to the field of process wastewater treatment, and solves the problem that process wastewater is blocked under gravity discharge. The discharging system comprises a waste water branch pipe, a waste water main pipe and a ventilation pipeline, the waste water main pipe is arranged to be a slope pipeline, the waste water main pipe sequentially comprises a first waste gas gathering section, a first waste water turbulence section and a first waste water stabilizing section from a high point to a low point, and a reserved connector A is formed in the first waste gas gathering section; the first wastewater turbulence section is provided with a plurality of first wastewater inflow connectors, the first wastewater stabilization section is provided with a first wastewater outflow connector, and the reserved connector A is connected with the ventilation pipeline. The process wastewater discharge system is suitable for discharging process wastewater produced by process equipment in an electronic plant.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of process wastewater treatment, especially relates to a process wastewater discharge system. BACKGROUND

[0002] In recent years, with the improvement of world science and technology level, the semiconductor and panel industry develops rapidly, and the number, speed and scale of domestic building have increased substantially.

[0003] Usually, a large number of process wastewater pipeline systems are arranged in electronic clean workshops. Except for a small amount of process wastewater systems for pressure drainage, most of them are gravity drainage, but because of various factors, the smooth flow of wastewater may be hindered, resulting in slow drainage speed, affecting the drainage efficiency of the pipeline system, and even causing drainage blockage in serious cases. UTILITARIAN CONTENT

[0004] The utility model provides a process wastewater discharge system, which can simultaneously drain wastewater and waste gas generated in the wastewater, overcoming the problem of poor wastewater flow in the prior art.

[0005] A process wastewater discharge system, characterized in that the discharge system comprises a wastewater branch pipe, a wastewater main pipe and an aeration pipeline, the wastewater main pipe is arranged as a slope pipeline, the wastewater main pipe comprises a first waste gas collection section, a first wastewater turbulent flow section and a first wastewater stable section in sequence from a high point to a low point, a reserved interface A is arranged on the first waste gas collection section, a plurality of first wastewater inflow interfaces are arranged on the first wastewater turbulent flow section, a first wastewater outflow interface is arranged on the first wastewater stable section, and the reserved interface A is connected with the aeration pipeline.

[0006] Further, the wastewater branch pipe is arranged as a slope pipeline, the wastewater branch pipe comprises a second waste gas collection section, a second wastewater turbulent flow section and a second wastewater stable section in sequence from a high point to a low point, a reserved interface a is arranged on the second waste gas collection section, a plurality of second wastewater inflow interfaces are arranged on the second wastewater turbulent flow section, a second wastewater outflow interface is arranged on the second wastewater stable section, and the reserved interface a is connected with the aeration pipeline.

[0007] Further, the aeration pipeline comprises an aeration branch pipe and an aeration main pipe, the reserved interface A and the reserved interface a are connected with the aeration branch pipe respectively and then converge into the aeration main pipe.

[0008] Further, the reservation interface A and the reservation interface a are arranged on the upper surface of the wastewater main pipe and the wastewater branch pipe in an inclined manner, the aeration branch pipe comprises a first horizontal part and a first inclined part A connected to one end of the first horizontal part and inclined downward, the reservation interface A and the reservation interface a are connected to the corresponding aeration branch pipe through the corresponding first inclined part A and the corresponding reservation interface a respectively, and the inclination angle of the reservation interface A and the reservation interface a is the same as that of the corresponding first inclined part A.

[0009] Further, the aeration main pipe comprises a second horizontal part, a plurality of reservation interfaces B are arranged on the second horizontal part and inclined in the direction opposite to the airflow flowing into the second horizontal part, the aeration branch pipe further comprises a first inclined part B connected to the other end of the first horizontal part and inclined downward, the inclination angle of the first inclined part B is the same as that of the reservation interface B, and the aeration main pipe and the aeration branch pipe are connected through the first inclined part B and the reservation interface B.

[0010] Further, the exhaust system further comprises a process exhaust pipe, and the aeration main pipe is communicated with the process exhaust pipe.

[0011] Further, the upper surface of the process exhaust pipe is provided with a reservation interface C, the reservation interface C is arranged in an inclined manner in the direction opposite to the airflow flowing into the process exhaust pipe, the aeration main pipe further comprises a second inclined part connected to one end of the second horizontal part and inclined downward, the inclination angle of the reservation interface C is the same as that of the second inclined part, and the process exhaust pipe and the aeration main pipe are connected through the second inclined part and the reservation interface C.

[0012] Further, the angle between the first inclined part A and the first horizontal part, the angle between the first horizontal part and the first inclined part B, and the angle between the second horizontal part and the second inclined part are all not less than 90 degrees, and the first inclined part A and the first horizontal part, the first horizontal part and the first inclined part B, and the second horizontal part and the second inclined part are connected through elbow joints.

[0013] Further, a valve is arranged on the first inclined part A.

[0014] Further, the horizontal position of the wastewater main pipe is lower than that of the wastewater branch pipe.

[0015] Compared with the prior art, the utility model can realize at least one of the following beneficial effects:

[0016] (1) In the process of setting the wastewater pipeline, the interface setting is also segmented, and different types of interface settings are arranged in different sections. The interface setting can guide the better discharge of wastewater and arrange the accumulation path and accumulation area for the gas that may be volatilized in the wastewater. The vent pipeline draws gas from the final waste gas accumulation area, which can effectively draw an appropriate amount of waste gas.

[0017] (2) The wastewater pipeline is connected to the vent branch pipeline, the vent branch pipeline is connected to the vent main pipeline, and the vent main pipeline is connected to the process exhaust pipeline in an inclined manner. The inclined connection saves the pipeline layout space, increases the return space when the waste liquid in the wastewater pipeline flows back to the vent branch pipeline, improves the compatibility of the airflow connection between the vent branch pipeline and the vent main pipeline and between the vent main pipeline and the process exhaust pipeline, and prevents the condensate water in the process exhaust pipeline from flowing back to the vent pipeline.

[0018] (3) The valve is arranged on the vent pipeline and is opened and closed as needed, which reduces the negative impact of the wastewater pipeline on the vent pipeline network while realizing the venting function.

[0019] In the present application, the above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the present application will be described in the following content, and some advantages can be apparent from the description or can be understood by implementing the present application. The purpose and other advantages of the present application can be achieved and obtained through the content specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings are only used for the purpose of illustrating specific embodiments and are not considered as limiting the present application. In the entire drawings, the same reference signs represent the same parts.

[0021] Figure 1 Overall pipe layout diagram of the wastewater discharge system;

[0022] Figure 2 Partial wastewater pipeline and corresponding vent pipeline lateral view;

[0023] Figure 3 Single-path wastewater pipeline and corresponding vent pipeline lateral view.

[0024] REFERENCE NUMERALS

[0025] 1-wastewater main pipeline; 2-wastewater branch pipeline; 3-vent branch pipeline; 4-vent main pipeline; 5-process exhaust pipeline; 6-reserved interface A; 7-reserved interface a; 8-reserved interface B; 9-reserved interface C; 10-valve. DETAILED DESCRIPTION

[0026] The utility model discloses a kind of process wastewater discharge systems, suitable for the discharge process of process wastewater in electronic workshop, process equipment in electronic workshop produces process wastewater after work, process wastewater is discharged to wastewater treatment room by wastewater pipeline, in the process of flowing through wastewater pipeline, it needs to work with air pipe and wastewater pipeline, to effectively realize the gravity discharge of process wastewater in wastewater pipeline. Specific description is made below in conjunction with examples.

[0027] As Figure 1 Shown, wastewater pipeline includes wastewater main pipe 1 and wastewater branch pipe 2, wastewater branch pipe 2 has multiple, each wastewater branch pipe 2 receives multiple process wastewater produced by process equipment along line arrangement, all process wastewater produced by process equipment is collected and unified flow through each wastewater branch pipe 2 to wastewater main pipe 1, wastewater main pipe 1 then sends wastewater after unified flow to wastewater collection room. In the whole process, the flow power of wastewater is its own gravity, in order to guide the flow direction of wastewater, wastewater branch pipe 2 and wastewater main pipe 1 are all arranged along gradient, and the gradient is 0.003;At the same time, wastewater main pipe 1 is arranged at the horizontal height lower than wastewater branch pipe 2, to facilitate that wastewater in wastewater branch pipe 2 can be smoothly transferred into wastewater main pipe 1 by gravity.

[0028] Wastewater main pipe 1 and wastewater branch pipe 2 are considered the space possibly required by volatile gas in wastewater when designing pipe diameter in addition to considering the maximum flow possibly passing;The volume in pipeline is generally 70% to accommodate the maximum wastewater flow possibly, and 30% is for accommodating the gas amount possibly.

[0029] However, the amount of volatile gas in wastewater is uncontrollable, and the volatile gas amount can exceed the surplus amount of wastewater pipeline, and the excess volatile gas cannot be discharged in time, which can hinder the effective flow of wastewater, so the reserved interface A (a) is arranged on the upper surface of the wastewater pipeline to connect the air pipeline. Specifically, the reserved interface A6 is arranged on the upper surface of the wastewater main pipe 1, and the purpose of this is to exhaust the entire wastewater pipeline at a unified point.

[0030] Further, if the process equipment loaded by wastewater branch pipe 2 increases, the pipeline of wastewater branch pipe 2 becomes longer, and the volatile gas starts to affect wastewater branch pipe 2 during the process of wastewater volatilization;In order to achieve better aeration effect, the reserved interface a7 is arranged on the upper surface of each wastewater branch pipe 2 to connect the air pipeline.

[0031] Furthermore, to improve ventilation efficiency, the wastewater pipe (1, 2) is divided into three sections: the waste gas gathering zone, the wastewater turbulence zone, and the wastewater stability zone, from high to low. These zones correspond to the wastewater main pipe 1, referred to as the first waste gas gathering zone, the first wastewater turbulence zone, and the first wastewater stability zone; and correspond to the wastewater branch pipe 2, referred to as the second waste gas gathering zone, the second wastewater turbulence zone, and the second wastewater stability zone. A reserved interface A(a) is set in the waste gas gathering zone; wastewater inflow interfaces are set in the wastewater turbulence zone, referred to as the first wastewater inflow interface and the second wastewater inflow interface for the wastewater main pipe 1 and the wastewater branch pipe 2, respectively; and wastewater outflow interfaces are set in the wastewater stability zone, referred to as the first wastewater outflow interface and the second wastewater outflow interface for the wastewater main pipe 1 and the wastewater branch pipe 2, respectively. Two upper and lower areas are formed within the wastewater pipe (1,2). Because the wastewater pipe (1,2) is sloped, the upper part forms a gas area with a small volume at the low point and a large volume at the high point, while the lower part forms a wastewater area with a large volume at the low point and a small volume at the high point. Because the high point is the gathering area of ​​volatile gases, the reserved interface A(a) needs to be arranged at the high point of the wastewater pipe (1,2). At the same time, because the wastewater pipe (1,2) needs to receive the inflow of multiple wastewaters, the wastewater will cause collisions between the water flows and squeeze the gas during the process of flowing into the wastewater pipe (1,2), which will interfere with the gathering and discharge of volatile gases and may even bring out splashes when the gas is discharged. Therefore, the reserved interface A(a) needs to avoid the various wastewater inflow interfaces and wait for the gas to bypass the collisions between the water flows and rise to the high point and stabilize before being discharged. Similarly, after the wastewater has experienced the collisions between the water flows, it continues to flow downward and gradually enters a stable state. This is the preferred area for installing the wastewater outflow interface, which can maximize the discharge of wastewater and improve wastewater discharge efficiency.

[0032] Furthermore, the wastewater flow rate may be blocked during the discharge process due to the waste residue in it. The flow rate of the wastewater in the pipeline is lower than the flow rate of the wastewater into the pipeline. At this time, the wastewater may flow back into the ventilation system. In order to help the backflowing wastewater flow back into the wastewater pipeline as much as possible, Figure 1 、 Figure 2 As shown, the reserved interface A(a) is set to be upwardly obliquely connected. Compared with a direct vertical upward connection, the inclined upward connection can increase the return path.

[0033] like Figure 2As shown, the ventilation pipeline includes a ventilation main pipe 4 and a ventilation branch pipe 3, and the waste water in the waste water pipeline will produce volatile gases during the flow process, which will increase the pressure in the waste water pipeline, thereby hindering the flow of waste water, and in order to balance the pressure therein, the excess waste gas in the waste water pipeline needs to be discharged, and the specific operation mode is as follows: the excess waste gas in each waste water branch pipe 2 is directly discharged into the corresponding ventilation branch pipe 3, and each ventilation branch pipe 3 uniformly flows the waste gas into the ventilation main pipe 4; the excess waste gas in the waste water main pipe 1 is also discharged into the corresponding ventilation branch pipe 3 first, and then flows into the ventilation main pipe 4 together with other ventilation branch pipes 3. A plurality of reserved interfaces B8 are arranged on the ventilation main pipe 4, and each ventilation branch pipe 3 communicates with the ventilation main pipe 4 through the reserved interface B8.

[0034] Further, in order to avoid the disturbance to the original gas flow when the gas flow in the ventilation branch pipe 3 flows into the ventilation main pipe 4, as shown in Figure 2 、 Figure 3 , the reserved interface B8 is arranged obliquely along the ventilation main pipe 4, so that the horizontal component of the flow direction of the gas flow in the ventilation branch pipe 3 entering the reserved interface B8 is consistent with the flow direction of the original gas flow in the ventilation main pipe 4.

[0035] As shown in Figure 2 , the ventilation branch pipe 3 includes a first inclined portion A, a first inclined portion B and a first horizontal portion, and the first inclined portion A and the first inclined portion B are obliquely connected to both ends of the first horizontal portion. As shown in Figures 2-3 , the ventilation branch pipe 3 is arranged above the waste water pipeline (1, 2) and the ventilation main pipe 4, the first inclined portion A is consistent with the inclination angle of the reserved interface A (a), and the waste water pipeline (1, 2) is connected to the first inclined portion A of the ventilation branch pipe 3 through the reserved interface A (a), thereby realizing the communication between the waste water pipeline (1, 2) and the ventilation branch pipe 3. The first inclined portion B is consistent with the inclination angle of the reserved interface B8, and the ventilation main pipe 4 is connected to the first inclined portion B of the ventilation branch pipe 3 through the reserved interface B8, thereby realizing the communication between the ventilation main pipe 4 and the ventilation branch pipe 3.

[0036] After the ventilation main pipe 4 collects the excess waste gas, if it is directly discharged into the atmosphere through the extension ventilation pipeline, it will cause environmental pollution, and needs to be discharged after waste gas treatment, so the ventilation main pipe 4 is connected to the reserved interface C9 on the nearby process exhaust pipeline 5.

[0037] Further, in order to reduce the interference to the original gas flow in the process exhaust pipeline 5, the reserved interface C9 is arranged along the process exhaust pipeline 5 in an inclined manner, so that the horizontal component of the gas flow flowing into the reserved interface C9 from the ventilation main pipe 4 is consistent with the flow direction of the original gas flow in the process exhaust pipeline 5. It should be noted that because condensate water may be generated in the process exhaust pipeline 5 at any time, in order to avoid the condensate water flowing back into the ventilation main pipe 4, the reserved interface C9 needs to be arranged in an upward inclined manner from the upper surface of the process exhaust pipeline 5. The ventilation main pipe 4 comprises a second horizontal part and a second inclined part, the reserved interface B8 is arranged on the second horizontal part, the second inclined part is consistent with the inclination angle of the reserved interface C9, and the process exhaust pipeline 5 is connected to the second inclined part of the ventilation main pipe 4 through the reserved interface C9, so as to realize the communication between the ventilation main pipe 4 and the process exhaust pipeline 5.

[0038] Further, in order to avoid the waste water in the waste water pipeline from further entering the ventilation pipeline through the backflow path composed of the reserved interface A(a) and the first inclined part A, a valve 10 is installed on the first inclined part A of the ventilation branch pipe 3, so as to avoid the waste water backflow caused by the possible blockage of the waste water pipeline, and also avoid the influence of the negative pressure in the process exhaust pipeline 5 on the waste water pipeline.

[0039] Further, in order to help the gas flow smoothly in the ventilation pipeline, the angle of each pipe in the ventilation main pipe 4 and the ventilation branch pipe 3 is not less than 90 degrees, and an elbow joint is arranged at the turning position.

[0040] Further, if the first horizontal part of the ventilation branch pipe 3 is directly connected to the first inclined part, or the second horizontal part of the ventilation main pipe 4 is directly connected to the second inclined part, and the angle is less than 90 degrees, a transition ventilation pipeline is connected between the first horizontal part and the first inclined part or between the second horizontal part and the second inclined part, so as to ensure that all the pipelines are turned through an angle not less than 90 degrees, as shown in Figure 3

[0041] The above only describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.​

Claims

1. A process wastewater discharge system, characterized in that: The discharge system comprises a wastewater branch pipe (2), a wastewater main pipe (1) and a ventilation pipe. The wastewater main pipe (1) is arranged as a sloped pipe. The wastewater main pipe (1) comprises, from the highest point to the lowest point, a first waste gas gathering section, a first wastewater turbulent section and a first wastewater stable section. A reserved interface A (6) is provided on the first waste gas gathering section. A plurality of first wastewater inflow interfaces are provided on the first wastewater turbulent section. A first wastewater outflow interface is provided on the first wastewater stable section. The reserved interface A (6) is connected to the ventilation pipe.

2. The exhaust system according to claim 1, characterized in that The wastewater branch pipe (2) is configured as a sloped pipe. The wastewater branch pipe (2) includes, from the highest point to the lowest point, a second waste gas gathering section, a second wastewater turbulent section, and a second wastewater stabilization section. A reserved interface a (7) is provided on the second waste gas gathering section. A plurality of second wastewater inflow interfaces are provided on the second wastewater turbulent section. A second wastewater outflow interface is provided on the second wastewater stabilization section. The reserved interface a (7) is connected to the ventilation pipe.

3. The exhaust system according to claim 2, characterized in that The ventilation pipeline comprises a ventilation branch pipe (3) and a ventilation main pipe (4), and the reserved interface A (6) and the reserved interface a (7) are respectively connected to the separate ventilation branch pipes (3) and then converge into the ventilation main pipe (4).

4. The exhaust system according to claim 3, characterized in that The reserved interface A (6) and the reserved interface a (7) are arranged obliquely on the upper surfaces of the wastewater main pipe (1) and the wastewater branch pipe (2); the ventilation branch pipe (3) comprises a first horizontal portion and a first inclined portion A connected to one end of the first horizontal portion and inclined downward; the reserved interface A and the reserved interface a are respectively connected to the corresponding ventilation branch pipe (3) through the corresponding first inclined portion A; and the inclination angles of the reserved interface A and the reserved interface a are respectively the same as the inclination angles of the corresponding first inclined portion A.

5. The exhaust system according to claim 4, characterized in that The ventilation main pipe (4) includes a second horizontal portion, on which a plurality of reserved interfaces B (8) are provided, and the reserved interfaces B (8) are arranged to be inclined in the opposite direction of the airflow in the second horizontal portion; the ventilation branch pipe (3) also includes a first inclined portion B connected to the other end of the first horizontal portion and inclined downward, the inclination angle of the first inclined portion B being the same as the inclination angle of the reserved interfaces B (8), and the ventilation main pipe (4) and the ventilation branch pipe (3) are connected to the reserved interfaces B (8) via the first inclined portion B.

6. The exhaust system according to claim 5, characterized in that The exhaust system further comprises a process exhaust duct (5), and the ventilation main pipe (4) is in communication with the process exhaust duct (5).

7. The exhaust system according to claim 6, characterized in that A reserved interface C (9) is provided on the upper surface of the process exhaust duct (5), and the reserved interface C (9) is inclined in the opposite direction of the airflow in the process exhaust duct (5); the ventilation main pipe (4) also includes a second inclined portion connected to one end of the second horizontal portion and inclined downward, the inclination angle of the reserved interface C (9) is the same as the inclination angle of the second inclined portion, and the process exhaust duct (5) and the ventilation main pipe (4) are connected to the reserved interface C (9) via the second inclined portion.

8. The exhaust system according to claim 7, characterized in that The angle between the first inclined portion A and the first horizontal portion, the angle between the first horizontal portion and the first inclined portion B, and the angle between the second horizontal portion and the second inclined portion are all not less than 90 degrees; the first inclined portion A and the first horizontal portion, the first horizontal portion and the first inclined portion B, and the second horizontal portion and the second inclined portion are all connected by elbow joints.

9. The exhaust system according to claim 8, characterized in that A valve (10) is provided on the first inclined portion A.

10. The exhaust system according to claim 9, characterized in that The horizontal position of the wastewater main pipe (1) is lower than the horizontal position of the wastewater branch pipe (2).

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