Polyester production wastewater collection water tank

Abstract

The utility model relates to a polyester production wastewater collection water tank, which belongs to the technical field of wastewater collection and comprises a tank body. The box body is made of stainless steel; a partition plate is arranged in the box body and divides the inner space of the box body into a first chamber and a second chamber. The lower end of the clapboard is hermetically connected with the bottom of the box body, and the upper end of the clapboard is hermetically connected or not connected with the top of the box body; the first chamber is communicated with the second chamber through the filter screen; an inlet pipeline reserved opening and an outlet pipeline reserved opening are formed in the box body; the inlet pipeline reserved opening is communicated with the first chamber and is used for introducing production wastewater into the first chamber; the outlet pipeline reserved opening is communicated with the second chamber and is used for discharging wastewater entering the second chamber through the filter screen. The functions of fixed-point collection and fixed-point discharge of waste water are achieved through the inlet pipeline reserved opening and the outlet pipeline reserved opening which are formed in the box body, filtering operation is easy and convenient, repeated filtering is not needed, and convenience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater collection and relates to a water tank for collecting polyester production wastewater. Background Art

[0002] In the production process of polyethylene terephthalate (PET), there are two chemical reaction processes: esterification reaction and polycondensation reaction. Both reaction stages can only be carried out under high temperature conditions above 260°C. Therefore, high temperature side reactions always exist in the production process. In addition to affecting the quality of PET finished products, some industrial wastewater containing ethylene glycol, acetaldehyde, and oligomers will be produced. Although it has no great economic value, it is quite polluting to the environment. In addition, the COD content of wastewater discharged in PET production is relatively high.

[0003] In the existing technology, wastewater is usually collected in the form of a wastewater collection pool, but it will inevitably seep into the ground, causing a burden on the surrounding environment.

[0004] On this basis, researchers in this field have designed wastewater collection pools, using cement to isolate them from the surrounding environment. However, due to reasons such as land subsidence over the years, cracks are prone to occur, posing dangers and safety hazards.

[0005] Chinese patent 201921846970.8 discloses a leak-proof chemical wastewater pool, which uses a protective box to cover the wastewater pool so that sewage flows into the protective box when leaking. A floating plate is installed in the protective box to detect leaks in time, and then pump out water and isolate pollution. However, in terms of cleaning impurities in this type of wastewater collection pool, since no filtration system is added, it is necessary to manually enter the collection pool for silting. The cleaning frequency gradually increases with the increase in production time, the cleaning difficulty is high, and the labor cost is increased. Due to the lack of solid-liquid separation, there is a certain damage to the subsequent pipelines and wastewater pumps, which will affect the service life of the wastewater pumps over time.

[0006] Therefore, it is of great significance to study a polyester production wastewater collection tank to solve the above problems. Utility Model Content

[0007] The utility model aims to solve the problems existing in the prior art and provides a water tank for collecting polyester production wastewater.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0009] A polyester production wastewater collection tank, comprising a tank body;

[0010] The box body is a stainless steel box body; a partition is provided inside the box body, and the partition divides the internal space of the box body into a first chamber and a second chamber; the lower end of the partition is sealed and connected to the bottom of the box body, and the upper end of the partition is sealed and connected to the top of the box body or not connected;

[0011] A filter screen is provided on the partition, and the first chamber is connected to the second chamber through the filter screen;

[0012] An inlet pipe reserved opening and an outlet pipe reserved opening are provided on the box body; the inlet pipe reserved opening is connected to the first chamber, and is used to introduce production wastewater into the first chamber; the outlet pipe reserved opening is connected to the second chamber, and is used to discharge the wastewater entering the second chamber through the filter.

[0013] As the preferred technical solution:

[0014] In the polyester production wastewater collection tank as described above, the upper end of the partition is not connected to the top of the box body; an overflow port is provided on the side of the box body, the overflow port is connected to the first chamber, the height of the overflow port is higher than the height of the partition, and a filter screen is provided at the outlet of the overflow port. When the overflow port height is reached, the wastewater flows directly to the wastewater treatment station through the overflow port to prevent the wastewater tank from being full; all wastewater finally needs to be transported to the wastewater treatment station for final treatment. The wastewater collection tank of the utility model performs preliminary treatment and collection of the wastewater, and then transports the preliminary treated water to the wastewater treatment station through a sewage pump. The original intention of designing the overflow port is to prevent an accidental overflow of sewage after the water tank is full, thereby polluting the surrounding environment.

[0015] In the polyester production wastewater collection tank as described above, the filter screen is a detachable filter screen.

[0016] In a polyester production wastewater collection tank as described above, the filter screen is a rectangular structure and there are two of them; a square groove is provided on the upper end of the partition, and two pairs of slide rails are provided on the square groove, each pair of slide rails includes a slide rail I and a slide rail II; along the vertical direction, the slide rails I and the slide rail II are respectively arranged on the two sides of the square groove and are parallel to each other; the two filter screens are respectively slidably connected to the partition through a pair of slide rails; the filter screen and the partition are sealed, and preferably, a handle is provided on the filter screen for easy lifting. The design of the two filter screens allows for easy replacement without affecting the filtering effect.

[0017] The filter is set on the upper end of the partition, on the one hand to give the waste residue some sedimentation space, and on the other hand to prevent the filter from being damaged during the material removal operation. The filter performs preliminary filtering of small particles, and large particles are deposited in the space below the filter and removed through a special material removal hopper.

[0018] As described above, a polyester production wastewater collection tank has a liquid level gauge reserved opening on the top of the tank body for placing a liquid level gauge for detecting the height of the liquid surface, and a vertical projection of the liquid level gauge reserved opening is located in the second chamber.

[0019] As described above, a polyester production wastewater collection tank has a deepened groove at the bottom of the tank body, and the vertical projection of the reserved opening of the liquid level meter is located in the deepened groove; the purpose of setting the deepened groove is to prevent impurities in the wastewater from affecting the accuracy of detection.

[0020] As described above, a polyester production wastewater collection tank has a plurality of manholes on the top of the tank body. The manholes are provided for easy observation and replacement of the filter screen and for material removal operations. A cover plate is provided on each manhole.

[0021] The polyester production wastewater collection tank as described above has a plurality of lifting ears arranged on the top of the tank body.

[0022] The polyester production wastewater collection tank as described above has cross-reinforced angle steels disposed on the sides and top of the tank body.

[0023] As described above, a polyester production wastewater collection tank is also provided with a hydrolysis spray water reserved port on the side of the tank body. Polyester production requires hydrolysis of the filter element for cleaning, so wastewater is also generated. Therefore, a hydrolysis spray water reserved port is also required to connect the hydrolysis wastewater to the wastewater tank; the height of the hydrolysis spray water reserved port is higher than the overflow port; the hydrolysis spray water reserved port is connected to the first chamber.

[0024] Beneficial effects:

[0025] (1) The utility model achieves the purpose of collecting and discharging wastewater at a fixed point through the reserved openings for the inlet pipe and the outlet pipe on the box body. The wastewater is collected from the reserved openings for the inlet pipe into the box body, subjected to preliminary filtration and sedimentation, and then flows into the second chamber, and finally transported to a large-scale wastewater treatment device through a wastewater pump; the filtration operation of the utility model is simple and does not need to be repeated multiple times, thereby improving convenience;

[0026] (2) The utility model achieves the purpose of cleaning large particles of solid waste by designing two pull-out detachable filter screens, reduces the loss of the outlet pipe and the wastewater pump, and increases the service life of the wastewater pump; and the two filter screens can be replaced with each other without affecting the filtering effect, and no manual desilting is required;

[0027] (3) The utility model uses a stainless steel welded sealed steel plate box to block wastewater from penetrating into the surrounding environment, with good sealing effect. The manholes on the top are all equipped with covers for sealing, which also effectively prevents the impact of volatile gases on the air environment. Moreover, the use of stainless steel will not cause deformation due to terrain subsidence, effectively combating the problem of terrain subsidence. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an overall schematic diagram of a polyester production wastewater collection tank of the utility model;

[0029] Figure 2 This is a top view of a polyester production wastewater collection tank of the utility model;

[0030] Figure 3 It is a side view of a polyester production wastewater collection tank of the utility model;

[0031] Figure 4 It is a cross-sectional view of a polyester production wastewater collection tank of the utility model;

[0032] Figure 5 It is a schematic diagram of the liquid level of a polyester production wastewater collection tank of the utility model;

[0033] Figure 6 This is a schematic diagram of a partition of a polyester production wastewater collection tank of the utility model;

[0034] Figure 7 This is a top view of a partition of a polyester production wastewater collection tank of the utility model;

[0035] Among them, 1-box, 2-deepened groove, 3-partition, 4-filter, 5-lifting ear I, 6-lifting ear II, 7-lifting ear III, 8-lifting ear IV, 9-cover I, 10-cover II, 11-cover III, 12-cross reinforcement angle steel, 13-first chamber, 14-second chamber, 15-inlet pipe reserved port, 16-overflow port, 17-outlet pipe reserved port I, 18-outlet pipe reserved port II, 19-hydrolysis spray water reserved port, 20-liquid level meter reserved port, 21-manhole I, 22-manhole II, 23-manhole III. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0037] A polyester production wastewater collection tank, such as Figures 1 to 7 As shown, it includes a box body 1;

[0038] The box body 1 is a stainless steel box body 1; a partition 3 is provided inside the box body 1, and the partition 3 divides the internal space of the box body 1 into a first chamber 13 and a second chamber 14; the lower end of the partition 3 is sealedly connected to the bottom of the box body 1, and the upper end of the partition 3 is not connected to the top of the box body 1;

[0039] The partition 3 is provided with a filter screen 4, which is a detachable filter screen; the filter screen 4 is a rectangular structure, and the number is 2; a square groove is opened at the upper end of the partition 3, and two pairs of slide rails are provided on the square groove, and each pair of slide rails includes a slide rail I and a slide rail II; along the vertical direction, the slide rails I and the slide rail II are respectively arranged on the two sides of the square groove and are parallel to each other; the two filter screens 4 are respectively slidably connected to the partition 3 through a pair of slide rails; the filter screen 4 and the partition 3 are sealed; the first chamber 13 is connected to the second chamber 14 through the filter screen;

[0040] The side of the box body 1 is provided with an overflow port 16, a cross reinforcement angle steel 12 and a hydrolysis spray water reserved port 19;

[0041] The overflow port 16 is connected to the first chamber 13, and the height of the overflow port 16 is higher than the height of the partition 3; a filter screen is provided at the outlet of the overflow port;

[0042] The height of the hydrolysis spray water reserved port 19 is higher than the overflow port 16; the hydrolysis spray water reserved port 19 is connected to the first chamber 13;

[0043] The box body 1 is provided with an inlet pipe reserved opening 15 and an outlet pipe reserved opening 18; the inlet pipe reserved opening 15 is communicated with the first chamber 13, and the inlet pipe reserved opening 15 is used to introduce production wastewater into the first chamber 13; the outlet pipe reserved opening is communicated with the second chamber 14, and the outlet pipe reserved opening 18 is used to discharge the wastewater entering the second chamber 14 through the filter screen;

[0044] The top of the box body 1 is provided with a reserved opening 20 for a liquid level gauge, three manholes, four lifting ears and a cross reinforcement angle steel 12;

[0045] The vertical projection of the reserved opening 20 of the liquid level gauge is located in the second chamber 14;

[0046] The three manholes are marked as manhole I 21, manhole II 22 and manhole III 23, and the three manholes are respectively provided with cover plates III 11, cover plates II 10 and cover plates I 9;

[0047] The four lifting eyes are respectively designated as lifting eye I 5, lifting eye II 6, lifting eye III 7 and lifting eye IV 8;

[0048] A deepening groove 2 is provided at the bottom of the box body 1 , and a vertical projection of a reserved opening 20 of a liquid level gauge is located in the deepening groove 2 .

[0049] Specific use process: the wastewater generated in the polyester production process and the hydrolysis filter element spray water are collected into the first chamber 13 through the inlet pipe reserved port 15 and the hydrolysis spray water reserved port 19 respectively, and then the large particles of impurities in the wastewater are preliminarily filtered through the filter 4 on the partition 3, and then flow into the second chamber, and then the wastewater pump connected to the outlet pipe reserved port is started and stopped by the liquid level meter to transport the wastewater, and the wastewater is discharged and collected at a fixed point, and then further processed.

Claims

1. A polyester production wastewater collection tank, characterized in that: It comprises a box body (1); A partition is provided inside the box body (1), and the partition divides the internal space of the box body (1) into a first chamber (13) and a second chamber (14); the lower end of the partition is sealedly connected to the bottom of the box body (1), and the upper end of the partition is sealedly connected to the top of the box body (1) or not connected; A filter screen (4) is provided on the partition plate, and the first chamber (13) is connected to the second chamber (14) through the filter screen; The box body (1) is provided with an inlet pipe reserved opening (15) and an outlet pipe reserved opening; the inlet pipe reserved opening (15) is communicated with the first chamber (13), and the inlet pipe reserved opening (15) is used to introduce production wastewater into the first chamber (13); the outlet pipe reserved opening is communicated with the second chamber (14), and the outlet pipe reserved opening is used to discharge wastewater that enters the second chamber (14) through the filter screen.

2. A polyester production wastewater collection tank according to claim 1, characterized in that: The upper end of the partition is not connected to the top of the box body (1); an overflow port (16) is provided on the side of the box body (1), the overflow port (16) is connected to the first chamber (13), and the height of the overflow port (16) is higher than the height of the partition plate (3).

3. A polyester production wastewater collection tank according to claim 2, characterized in that: The filter screen (4) is a detachable filter screen.

4. A polyester production wastewater collection tank according to claim 3, characterized in that: The filter screen (4) is a rectangular structure, and there are two of them; a square groove is provided at the upper end of the partition, and two pairs of slide rails are provided on the square groove, and each pair of slide rails includes a slide rail I and a slide rail II; along the vertical direction, the slide rail I and the slide rail II are respectively arranged on two side surfaces of the square groove and are parallel to each other; the two filter screens (4) are respectively slidably connected to the partition through a pair of slide rails; the filter screen (4) and the partition are sealed.

5. A polyester production wastewater collection tank according to claim 4, characterized in that: A liquid level meter reserved opening (20) is provided on the top of the box body (1), and a vertical projection of the liquid level meter reserved opening (20) is located in the second chamber (14).

6. A polyester production wastewater collection tank according to claim 5, characterized in that: A deepening groove (2) is provided at the bottom of the box body (1), and a vertical projection of a reserved opening (20) of a liquid level meter is located in the deepening groove (2).

7. A polyester production wastewater collection tank according to claim 1, characterized in that: The top of the box body (1) is provided with a plurality of manholes, and each manhole is provided with a cover plate.

8. A polyester production wastewater collection tank according to claim 1, characterized in that: The top of the box body (1) is provided with a plurality of lifting ears.

9. A polyester production wastewater collection tank according to claim 1, characterized in that: The sides and top of the box body (1) are both provided with cross-reinforcement angle steels.

10. A polyester production wastewater collection tank according to claim 2, characterized in that: A hydrolysis spray water reserved opening (19) is also provided on the side of the box body (1); the height of the hydrolysis spray water reserved opening (19) is higher than the overflow opening (16); and the hydrolysis spray water reserved opening (19) is connected to the first chamber (13).

Images