Purifying and recycling water collecting pool for industrial wastewater

Abstract

The utility model relates to the technical field of industrial wastewater treatment equipment, in particular to an industrial wastewater purifying and recycling water collecting tank which comprises a tank body, and a first filter screen, a second filter screen, a third filter screen, an overflow wall, a sand filter device and an activated carbon plate are sequentially arranged in the tank body from left to right; filter holes of the first filter screen, the second filter screen and the third filter screen are sequentially reduced; the left and right sides of the overflow wall, the sand filtering device and the activated carbon plate are connected with the inner side wall of the tank body, and the bottoms of the overflow wall, the sand filtering device and the activated carbon plate are connected with the bottom of the tank body. According to the utility model, solid impurities with different sizes are blocked by arranging three layers of filter screens of which the filter holes are sequentially reduced, the sand filter device is arranged to remove suspended matters and purify water, and the activated carbon plate is arranged to absorb heavy metals in waste liquid, so that the recycling utilization rate of the waste liquid is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial wastewater treatment equipment technical field especially, relates to a kind of industrial wastewater purification recovery water-collecting tank. BACKGROUND

[0002] In the petroleum, chemical industry field, most petrochemical plants each operation workshop's machine pump cooling water, circulating water, steam condensate and other waste liquid are directly discharged into ditch, so it will waste resources and increase the processing cost of these waste liquid.

[0003] Now also petrochemical plant sets up waste liquid water-collecting pool, waste liquid before entering main sewage treatment system is gathered, to ensure the normal operation of subsequent waste liquid processing equipment and facilities, to recycle and reuse these waste liquid.

[0004] However, the structure of most waste liquid water-collecting pool is very simple at present, without waste liquid treatment function such as removing impurities, cannot effectively remove impurities, suspended solids, organic matter and heavy metals in waste liquid, so it will reduce the utilization rate of waste liquid recycling. UTILITY MODEL CONTENT

[0005] In view of the deficiency of prior art, the utility model aims at providing a kind of industrial wastewater purification recovery water-collecting pool, by setting three layers of filter hole gradually smaller filter screen barrier different size solid impurities, set up sand filter device to remove suspended solids, purify water quality, set up activated carbon plate to absorb heavy metals in waste liquid, improve the utilization rate of waste liquid recycling.

[0006] To achieve the above object, the utility model provides the following technical scheme: an industrial wastewater purification and recovery water collecting tank, including the pool body, first filter screen, second filter screen, third filter screen, overflow wall, sand filter device and activated carbon plate are sequentially arranged in the pool body from left to right, the filter hole of first filter screen, second filter screen and third filter screen is smaller in turn, and waste liquid passes through first filter screen, second filter screen, third filter screen, overflow wall, sand filter device and activated carbon plate in turn, first filter screen, second filter screen and third filter screen block solid impurities in waste liquid, sand filter device blocks suspended solids in waste liquid, purifies water quality, activated carbon plate absorbs heavy metals in waste liquid, avoids waste liquid carrying heavy metals to flow into the collecting chamber behind activated carbon plate, and avoids the waste liquid of final recovery carrying heavy metals, first filter screen, second filter screen and third filter screen are all arranged as L-shaped filter screen, and all include horizontal plane and vertical plane, the left and right sides of the vertical plane of first filter screen, second filter screen and third filter screen are connected with the inner side wall of the pool body, and the side, away from the vertical plane, of the horizontal plane is connected with the overflow wall, the top of the vertical plane of first filter screen, second filter screen and third filter screen is all located at the same horizontal height and is higher than the top of the overflow wall, overflow port is formed in the overflow wall, and the left and right sides of the overflow wall, sand filter device and activated carbon plate are connected with the inner side wall of the pool body, and the bottom is connected with the bottom of the pool body.

[0007] Further, first filter screen, second filter screen and third filter screen are all arranged as arc-shaped filter screen, the arc radius of first filter screen, second filter screen and third filter screen is smaller in turn, and the two ends of first filter screen, second filter screen and third filter screen are connected with the overflow wall, and the left and right sides are connected with the inner side wall of the pool body, and the overflow port is arranged at the position surrounded by third filter screen. Arc-shaped filter screen is favorable for expanding the contact area of waste liquid and filter screen, increasing the filtration area, and the position of overflow port is favorable for waste liquid to flow through first filter screen, second filter screen and third filter screen in turn, finally flows to the overflow port, and improves the filtration efficiency.

[0008] Further, the sand filter device includes a hollow filter frame, a sand filter bag is arranged in the filter frame, and sand is arranged in the sand filter bag.

[0009] Further, a water inlet pipe is arranged on the left side wall of the pool body, and the water inlet pipe is connected with the machine pump cooling water, sewage and other waste liquid from each operation workshop of the petrochemical plant.

[0010] Further, a sewage outlet is arranged at the bottom of the pool body, and the sewage outlet is connected with the external sewage pipeline.

[0011] Further, the active carbon plate and the right inner side wall of the pool body form a recovery chamber, the recovery chamber is connected with a self-priming pump with low liquid level automatic pump stopping function, the self-priming pump sucks the waste liquid in the recovery chamber into an external circulating pool, and the waste liquid in the recovery chamber is recycled and reused.

[0012] Further, the pool body is an upper opening pool body.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model discloses a three-layer filter hole gradually reducing filter screen is set up to block different size solid impurities, sand filter device is set up to remove suspended solids, purify water quality, active carbon plate is set up to absorb heavy metal in waste liquid, and the utilization rate of waste liquid recycling is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is structure schematic diagram of the utility model;

[0016] Figure 2 It is overhead structure schematic diagram of the utility model;

[0017] Figure 3 It is sectional structure schematic diagram of the utility model filter screen is L-shaped filter screen;

[0018] Figure 4 It is sectional structure schematic diagram of the utility model filter screen is arc-shaped filter screen.

[0019] In the drawing: 1, pool body;2, inlet pipe;3, first filter screen;4, second filter screen;5, third filter screen;6, overflow wall;7, sand filter device;8, active carbon plate;9, recovery chamber;10, overflow port;11, blowdown port. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] As Figures 1-4 shown, an industrial wastewater purification and recycling water collecting pool, including pool body 1, the pool body 1 is upper opening pool body;Inlet pipe 2 is equipped on the left side wall of the pool body 1, and the inlet pipe 2 is connected with the waste liquid such as pump cooling water and blowdown water from each operation workshop of petrochemical plant;Blowdown port 11 is equipped at the bottom of the pool body 1, and the blowdown port is connected with external blowdown pipeline;

[0022] The first filter screen 3, the second filter screen 4 and the third filter screen 5 are sequentially arranged from left to right in the pool body 1; the sand filtering device 7 comprises a hollow filter frame, a sand filtering bag is arranged in the filter frame, sand is filled in the sand filtering bag, and the diameter of the sand is greater than the pore diameter of the sand filtering bag; the filter holes of the first filter screen 3, the second filter screen 4 and the third filter screen 5 are sequentially reduced in size; the waste liquid sequentially passes through the first filter screen 3, the second filter screen 4, the third filter screen 5, the overflow wall 6, the sand filtering device 7 and the activated carbon plate 8; the first filter screen 6, the second filter screen 4 and the third filter screen 5 block solid impurities in the waste liquid; the sand filtering device 7 blocks suspended solids in the waste liquid and purifies water quality; the activated carbon plate 8 absorbs heavy metals in the waste liquid, so that the waste liquid carrying the heavy metals does not flow into the collection chamber 9 behind the activated carbon plate 8, and the finally recovered waste liquid does not carry the heavy metals; the first filter screen 3, the second filter screen 4 and the third filter screen 5 are all arranged in an L-shaped filter screen and all comprise a horizontal surface and a vertical surface; the left and right sides of the vertical surfaces of the first filter screen 3, the second filter screen 4 and the third filter screen 5 are connected with the inner side walls of the pool body 1; the horizontal surfaces of the first filter screen 3, the second filter screen 4 and the third filter screen 5 are connected with the overflow wall 6 on the sides away from the vertical surfaces; the top portions of the vertical surfaces of the first filter screen 3, the second filter screen 4 and the third filter screen 5 are all located at the same horizontal height and are all higher than the top portion of the overflow wall 6; the overflow wall 6 is provided with an overflow port 10; the left and right sides of the overflow wall 6, the sand filtering device 7 and the activated carbon plate 8 are connected with the inner side walls of the pool body 1; the bottom portions of the overflow wall 6, the sand filtering device 7 and the activated carbon plate 8 are connected with the bottom portion of the pool body 1; the activated carbon plate 8 and the right inner side wall of the pool body 1 form a recovery chamber 9; the recovery chamber 9 is connected with a self-priming pump with a low liquid level automatic pump stopping function; the self-priming pump sucks the waste liquid in the recovery chamber 9 into an external circulating pool; and the waste liquid in the recovery chamber 9 is recycled and reused.

[0023] In another embodiment, the first filter screen 3, the second filter screen 4 and the third filter screen 5 are all arranged in an arc-shaped filter screen; the arc radii of the first filter screen 3, the second filter screen 4 and the third filter screen 5 are sequentially reduced in size; the first filter screen 3, the second filter screen 4 and the third filter screen 5 are all connected with the overflow wall 6 at the two ends and connected with the inner side walls of the pool body 1 at the left and right sides; and the overflow port 10 is arranged at a position surrounded by the third filter screen 5. The arc-shaped filter screen is beneficial to expand the contact area of the waste liquid and the filter screen, increase the filtering area, and the position of the overflow port 10 is beneficial to the waste liquid sequentially flowing through the first filter screen 3, the second filter screen 4 and the third filter screen 5 and finally flowing to the overflow port 10, thereby improving the filtering efficiency.

[0024] The working principle and use process of the utility model are as follows: Figures 1-4As shown, the waste liquid such as pump cooling water and sewage from each operation workshop of the petrochemical plant flows into the pool body 1 from the water inlet pipe, and the waste liquid flows into the coarse filtration through the first filter screen 3, the filtration through the second filter screen 4 and the fine filtration through the third filter screen 5 in sequence, so as to block and retain the solid impurities with different particle sizes in the waste liquid between the pool body 1 and the first filter screen, the first filter screen and the second filter screen, and the second filter screen and the third filter screen; then the waste liquid flows through the overflow port 10 opened on the overflow wall 6, the sand filtering device 7 and the activated carbon plate 8 in sequence, the sand filtering device 7 removes the suspended solids in the waste liquid, purifies the water quality of the waste liquid, the activated carbon plate 8 absorbs the heavy metals in the waste liquid, and then the waste liquid finally flows into the recovery chamber 9, the recovery chamber 9 is connected with the self-priming pump with the low liquid level automatic pump stopping function, the self-priming pump sucks the waste liquid in the recovery chamber 9 into the external circulating pool, and the waste liquid in the recovery chamber 9 is recycled and reused.

[0025] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0026] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An industrial wastewater purification and recovery lagoon comprising a lagoon body, characterized by: The pool body is provided with, from left to right, a first filter screen, a second filter screen, a third filter screen, an overflow wall, a sand filter device, and an activated carbon plate. The filter holes of the first, second, and third filter screens decrease in size sequentially. The first, second, and third filter screens are all L-shaped, each including a horizontal plane and a vertical plane. The left and right sides of the vertical plane of the first, second, and third filter screens are connected to the inner wall of the pool body, and the side of their horizontal plane away from the vertical plane is connected to the overflow wall. The tops of the vertical planes of the first, second, and third filter screens are all at the same horizontal height and are all higher than the top of the overflow wall. An overflow port is provided on the overflow wall. The left and right sides of the overflow wall, sand filter device, and activated carbon plate are connected to the inner wall of the pool body, and their bottoms are connected to the bottom of the pool body.

2. The industrial wastewater purification and recovery tank according to claim 1, characterized in that: The first, second, and third filters are all arc-shaped filters, with the arc radius decreasing sequentially. The first, second, and third filters are connected to the overflow wall at both ends and to the inner wall of the pool on both sides. The overflow outlet is located at the position enclosed by the third filter.

3. The industrial wastewater purification and recovery tank according to claim 1, characterized in that: The sand filtration device includes a hollow filter frame, a sand filter bag inside the filter frame, and sand inside the sand filter bag, wherein the diameter of the sand is larger than the pore size of the sand filter bag.

4. The industrial wastewater purification and recovery tank according to claim 1, characterized in that: A water inlet pipe is provided on the left side wall of the pool.

5. The industrial wastewater purification and recovery tank according to claim 1, characterized in that: A drain outlet is provided at the bottom of the pool, and the drain outlet is connected to an external sewage pipe.

6. The industrial wastewater purification and recovery lagoon of claim 1, wherein: A recovery chamber is formed between the activated carbon plate and the inner right side wall of the pool.

7. The industrial wastewater purification and recovery lagoon of claim 1, wherein: The pool is an open-top pool.

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