A circulating water and sewage treatment and reuse system

Abstract

The utility model relates to sewage treatment technical field especially is related to a circulating water and sewage treatment reuse system, include: pretreatment unit is used for receiving treatment wastewater, makes and removes big granule sludge and partial suspended matter, biological treatment unit is used for utilizing microorganism to degrade organic contaminant and partial nitrogen phosphorus nutrient in water, and the input of biological treatment unit and the liquid output of pretreatment unit are connected, advanced treatment unit is used for further removing residual suspended matter, colloid, solubility organic matter, microorganism and partial ion in water, disinfection unit is used for killing pathogenic microorganism in water, and reuse water storage unit is used for storing the treatment water reaching reuse standard, realizes the dynamic cleaning structure of screen through reset element, realizes solid sludge automatic sliding and screen reset, avoids the jam stop, promotes continuity, and the inclined screen and guide groove design accurate flow guide solid waste, and separation efficiency promotes.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a circulating water and wastewater treatment and reuse system. Background Technology

[0002] With the increasing demand for industrial water and the worsening water shortage, circulating water and wastewater reuse technologies have become key solutions. Traditional treatment systems generally suffer from problems such as easy clogging of pretreatment units, low solid-liquid separation efficiency, high frequency of manual cleaning, and large fluctuations in reclaimed water quality. In particular, the bar screens in the pretreatment stage require shutdown for cleaning, affecting system continuity; and the lack of real-time monitoring mechanisms for reclaimed water poses safety risks. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the problems of easy clogging of the pretreatment unit, low solid-liquid separation efficiency, high frequency of manual cleaning, and large fluctuations in the quality of recycled water that are common in the existing treatment systems, a circulating water and wastewater treatment and reuse system is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a circulating water and wastewater treatment and reuse system, comprising:

[0005] The pretreatment unit is used to receive the treated wastewater and remove large particles of sludge and some suspended solids.

[0006] The biological treatment unit is used to degrade organic pollutants and some nitrogen and phosphorus nutrients in water using microorganisms. The input end of the biological treatment unit is connected to the liquid output end of the pretreatment unit.

[0007] The deep treatment unit is used to further remove residual suspended solids, colloids, dissolved organic matter, microorganisms and some ions from the water. The input end of the deep treatment unit is connected to the output end of the biological treatment unit.

[0008] The disinfection unit is used to kill pathogenic microorganisms in the water. The input end of the disinfection unit is connected to the output end of the deep treatment unit.

[0009] The system also includes a reclaimed water storage unit for storing treated water that meets reuse standards. The input of the reclaimed water storage unit is connected to the output of the disinfection unit. A dynamic cleaning structure for the screen is achieved through a reset element, enabling automatic sliding of solid sludge and screen reset, avoiding clogging and downtime, and improving continuity. The inclined screen and guide trough design precisely guides solid waste, improving separation efficiency.

[0010] To address the environmental pollution and increased treatment costs associated with direct sludge discharge, the circulating water and wastewater treatment and reuse system further includes a sludge treatment unit. This sludge treatment unit collects and processes sludge from the pretreatment unit, and its input is connected to the sludge output of the pretreatment unit.

[0011] To address the issue of fixed screens easily clogging and requiring machine shutdown for cleaning, a pretreatment unit is further included, comprising a separation chamber and separation components arranged within the chamber. A liquid inlet pipe is installed on the top surface of the separation chamber, a solid outlet is located on the side wall of the chamber, and a liquid outlet is located on the bottom surface of the chamber.

[0012] The separation assembly includes a screen and a reset element. The screen and the separation chamber are rotatably connected, and the screen is arranged in an inclined state inside the separation chamber. The end of the screen near the solid outlet is its lower end, and the end of the screen away from the solid outlet extends beyond the plane of the inlet pipe. One end of the reset element abuts against the separation chamber, and the other end abuts against the end of the screen near the solid outlet. The reset element is located below the screen.

[0013] To address the issue of uneven screen load caused by wastewater impact, the system further includes an overflow trough installed on the top surface of the separation chamber, with the inlet end of the inlet pipe extending to the upper part of the overflow trough and the outlet end of the inlet pipe extending to the screen. The overflow trough is equipped with baffles arranged in an alternating pattern, and is used for wastewater input.

[0014] To address the issue of solids splashing or clogging the outlet, the separation assembly further includes a guide trough, which comprises a receiving portion and a guiding portion. The receiving portion extends horizontally, with one end fixedly connected to the separation chamber and located at the solids outlet. The guiding portion is arranged at an angle, with its lower end fixedly connected to the receiving portion.

[0015] To address the issue of easy misalignment and failure of the reset element, the guide groove further includes a mounting part. The mounting part and the guide part are fixedly connected, and a stabilizing rod is slidably arranged on the mounting part. The reset element is sleeved on the stabilizing rod.

[0016] To address the issue of needing manual intervention when the quality of reclaimed water fluctuates, the system further includes connecting the output of the reclaimed water storage unit to the internal cavity of the separation tank via a flushing pump.

[0017] The beneficial effects of this utility model are as follows: The circulating water and sewage treatment and reuse system provided by this utility model realizes the dynamic cleaning structure of the screen through the reset element, realizes the automatic sliding of solid sludge and screen reset, avoids clogging and shutdown, improves continuity, and the inclined screen and guide trough design guides the solid waste, thereby improving the separation efficiency. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural schematic diagram of the preprocessing unit of this utility model;

[0021] Figure 3 This is a utility model Figure 2 A magnified structural diagram of point A in the middle.

[0022] In the diagram: 1. Pretreatment unit, 11. Separation box, 111. Liquid inlet pipe, 112. Solid outlet, 113. Liquid outlet, 12. Separation assembly, 121. Screen, 122. Reset element, 13. Overflow trough, 131. Baffle plate, 123. Guide trough, 1231. Receiving part, 1232. Guide part, 1233. Mounting part, 1234. Stabilizing bar;

[0023] 2. Biological treatment unit; 3. Advanced treatment unit; 4. Disinfection unit; 5. Reclaimed water storage unit; 6. Sludge treatment unit; 7. Flushing pump. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0025] like Figure 1 This is a schematic diagram of the structure of this utility model, a circulating water and wastewater treatment and reuse system, comprising:

[0026] Pretreatment unit 1 is used to receive treated wastewater to remove large particles of sludge and some suspended solids.

[0027] Biological treatment unit 2 is used to degrade organic pollutants and some nitrogen and phosphorus nutrients in water using microorganisms. The input end of biological treatment unit 2 is connected to the liquid output end of pretreatment unit 1. Biological treatment unit 2 can be a membrane bioreactor or a biofilm tank. Biological treatment unit 2 and pretreatment unit 1 are connected by a water pump.

[0028] The deep treatment unit 3 is used to further remove residual suspended solids, colloids, dissolved organic matter, microorganisms and some ions from the water. The input end of the deep treatment unit 3 is connected to the output end of the biological treatment unit 2. The deep treatment unit is an activated carbon filter, a multi-media filter or a membrane filter. The biological treatment unit 2 and the deep treatment unit 3 are connected by a water pump.

[0029] Disinfection unit 4 is used to kill pathogenic microorganisms in water. The input end of disinfection unit 4 is connected to the output end of deep treatment unit 3. The disinfection unit is one of ultraviolet disinfection device and ozone generator or a combination of both. Disinfection unit 4 and deep treatment unit 3 are connected by a water pump.

[0030] And a recycled water storage unit 5, which is used to store treated water that meets the reuse standard. The input end of the recycled water storage unit 5 is connected to the output end of the disinfection unit 4. The recycled water storage unit 5 is a storage tank or recycled water pool. The disinfection unit 4 and the recycled water storage unit 5 are connected by a water pump.

[0031] The circulating water and wastewater treatment and reuse system also includes a sludge treatment unit 6, which is used to collect and treat the pretreatment unit 1. The input end of the sludge treatment unit 6 is connected to the sludge output end of the pretreatment unit 1.

[0032] like Figure 2 , 3 As shown, the pretreatment unit 1 includes a separation chamber 11 and a separation assembly 12 arranged inside the separation chamber 11. A liquid inlet pipe 111 is installed on the top surface of the separation chamber 11, a solid outlet 112 is opened on the side wall of the separation chamber 11, and a liquid outlet 113 is opened on the bottom surface of the separation chamber 11.

[0033] like Figure 2 , 3 As shown, the separation assembly 12 includes a screen 121 and a reset element 122. The screen 121 is rotatably connected to the separation chamber 11, and the screen 121 is arranged in an inclined state inside the separation chamber 11. The end of the screen 121 near the solid outlet 112 is its lower end, and the end of the screen 121 away from the solid outlet 112 extends beyond the plane of the inlet pipe 111. One end of the reset element 122 abuts against the separation chamber 11, and the other end abuts against the end of the screen 121 near the solid outlet 112. The reset element 122 is located below the screen 121. The reset element 122 realizes the dynamic cleaning structure of the screen 121, realizes the automatic sliding of solid sludge and screen reset, avoids clogging and shutdown, and improves continuity. The inclined screen 121 and the guide trough 123 are designed to guide solid waste, improve separation efficiency, and the automatic reset of the screen 121 reduces the frequency of manual cleaning.

[0034] like Figure 2 , 3 As shown, an overflow trough 13 is installed on the top surface of the separation chamber 11. The input end of the liquid inlet pipe 111 extends to the upper part of the overflow trough 13, and the output end of the liquid inlet pipe 111 extends to the screen 121. Baffles 131 are installed in the overflow trough 13 in an alternating pattern. The overflow trough 13 is used for waste liquid input. The overflow trough 13 and the baffles 131 disperse the water flow impact and improve the separation uniformity.

[0035] like Figure 3 As shown, the separation component 12 includes a guide groove 123, which includes a receiving part 1231 and a guiding part 1232. The receiving part 1231 extends along the horizontal plane, and one end of the receiving part 1231 is fixedly connected to the separation box 11. The receiving part 1231 is located at the solid outlet 112. The guiding part 1232 is arranged at an angle, and the lower end of the guiding part 1232 is fixedly connected to the receiving part 1231. The guide groove 123 receives and directionally discharges solids to avoid secondary pollution.

[0036] like Figure 3 As shown, the guide groove 123 also includes a mounting part 1233, which is fixedly connected to the guide part 1232. A stabilizing rod 1234 is slidably arranged on the mounting part 1233, and a reset element 122 is sleeved on the stabilizing rod 1234. The stabilizing rod 1234 restricts the displacement of the reset element 122 to ensure the reset accuracy of the screen 121.

[0037] The output end of the recycled water storage unit 5 is connected to the inner cavity of the separation box 11 through the flushing water pump 7. The flushing water pump 7 provides recycled water to flush the screen 121 and collect the flushed sludge to the lower end of the screen 121.

[0038] Working process: After being buffered by the baffle plate 131 of the overflow tank 13, the waste liquid is evenly sprayed from the inlet pipe 111 onto the inclined screen 121. The screen 121 traps large particles of sludge, which slide along the inclined surface to the end of the screen 121 at the solid outlet 112. When the sludge accumulates to a certain amount, the screen 121 rotates under the gravity of the sludge, causing the lower end of the screen 121 to rotate below the solid outlet 112, thereby flushing the sludge out from the solid outlet 112. The sludge is discharged to the sludge treatment unit. When the amount of sludge decreases, the screen 121 is reset under the elastic force of the elastic element 122. The liquid enters the biological treatment unit 2 from the bottom outlet through the screen holes of the screen 121. Microorganisms degrade organic matter. The deep treatment unit 3 and the disinfection unit 4 remove suspended solids, ions and microorganisms. After disinfection, the liquid is output to the recycled water storage unit. The qualified water is stored and reused. The flushing pump 7 provides recycled water to flush the screen 121 and collects the flushed sludge to the lower end of the screen 121.

[0039] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A recirculating water and sewage treatment and reuse system, characterized by, include: Pretreatment unit (1) is used to receive treated wastewater to remove large particles of sludge and some suspended solids; Biological treatment unit (2) is used to degrade organic pollutants and some nitrogen and phosphorus nutrients in water using microorganisms. The input end of the biological treatment unit (2) is connected to the liquid output end of the pretreatment unit (1). The deep treatment unit (3) is used to further remove residual suspended solids, colloids, dissolved organic matter, microorganisms and some ions in the water. The input end of the deep treatment unit (3) is connected to the output end of the biological treatment unit (2). The disinfection unit (4) is used to kill pathogenic microorganisms in the water. The input end of the disinfection unit (4) is connected to the output end of the deep treatment unit (3). And a recycled water storage unit (5) for storing treated water that meets the reuse standard, wherein the input end of the recycled water storage unit (5) is connected to the output end of the disinfection unit (4).

2. The recirculating water and sewage treatment and reuse system of claim 1, wherein: The circulating water and wastewater treatment and reuse system also includes a sludge treatment unit (6), which is used to collect and treat the pretreatment unit (1), and the input end of the sludge treatment unit (6) is connected to the sludge output end of the pretreatment unit (1).

3. The recirculating water and wastewater treatment and reuse system of claim 1, wherein: The pretreatment unit (1) includes a separation chamber (11) and a separation component (12) arranged inside the separation chamber (11). A liquid inlet pipe (111) is installed on the top surface of the separation chamber (11), a solid outlet (112) is opened on the side wall of the separation chamber (11), and a liquid outlet (113) is opened on the bottom surface of the separation chamber (11). The separation assembly (12) includes a screen (121) and a reset element (122). The screen (121) and the separation chamber (11) are rotatably connected. The screen (121) is arranged in an inclined state inside the separation chamber (11). The end of the screen (121) near the solid outlet (112) is its lower end. The end of the screen (121) away from the solid outlet (112) extends beyond the plane of the liquid inlet pipe (111). One end of the reset element (122) abuts against the separation chamber (11), and the other end abuts against the end of the screen (121) near the solid outlet (112). The reset element (122) is located below the screen (121).

4. A recirculating water and sewage treatment and reuse system as claimed in claim 3 wherein: An overflow trough (13) is installed on the top surface of the separation box (11). The input end of the liquid inlet pipe (111) extends to the upper part of the overflow trough (13), and the output end of the liquid inlet pipe (111) extends to the screen (121). A baffle plate (131) is installed in the overflow trough (13) in an alternating pattern. The overflow trough (13) is used for the input of waste liquid.

5. A circulating water and wastewater treatment and reuse system as described in claim 3, characterized in that: The separation component (12) includes a guide groove (123), the guide groove (123) includes a receiving part (1231) and a guide part (1232), the receiving part (1231) extends along the horizontal plane, one end of the receiving part (1231) is fixedly connected to the separation box (11), and the receiving part (1231) is located at the solid outlet (112), the guide part (1232) is arranged at an angle, and the lower end of the guide part (1232) is fixedly connected to the receiving part (1231).

6. A recirculating water and sewage treatment and re-use system as claimed in claim 5 wherein: The guide groove (123) also includes a mounting part (1233), which is fixedly connected to the guide part (1232). A stabilizing rod (1234) is slidably arranged on the mounting part (1233), and the reset element (122) is sleeved on the stabilizing rod (1234).

7. The recirculating water and wastewater treatment and reuse system of claim 1, wherein: The output end of the recycled water storage unit (5) is connected to the inner cavity of the separation box (11) via the flushing water pump (7).

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