High-efficiency precipitation device capable of being used for standby and running in series

Abstract

The utility model discloses a standby efficient precipitation device capable of running in series. The efficient precipitation device comprises a precipitation device M and a precipitation device N which are connected in parallel, a first valve is mounted on a water inlet pipe of the precipitation device M, and a second valve is mounted on a water inlet pipe of the precipitation device N; a fifth valve is mounted on a water outlet pipe of the precipitation device M, and a fourth valve is mounted on a water outlet pipe of the precipitation device N; the water outlet pipe of the precipitation device M is communicated with the water inlet pipe of the precipitation device N through a series pipe, one end of the series pipe is connected to the upstream of the fifth valve, the other end of the series pipe is connected to the downstream of the second valve, and a third valve is arranged on the series pipe. According to the utility model, the two precipitation devices are adopted, and the two precipitation devices can be used for standby and can be connected in series for operation under the control of the valves, so that compared with the existing efficient precipitation device, one precipitation device is saved, and the utilization rate is improved; and the device has the advantages of reduced occupied area, reduced investment cost, reduced equipment maintenance, convenience in operation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a high-efficiency precipitation device which can be used in standby mode and can be operated in series. Background Art

[0002] At present, domestic environmental protection is becoming increasingly stringent, and the requirements for sewage treatment, high-salt wastewater treatment, and zero-emission water treatment are becoming higher and higher. The use of high-efficiency sedimentation equipment for flocculation sedimentation, chemical softening and hardness removal is increasingly becoming a necessary process in water treatment and environmental protection projects.

[0003] High-efficiency sedimentation device is a sewage treatment process that uses physical or chemical treatment and special flocculation and sedimentation systems to achieve rapid sedimentation. This process integrates rapid mixing, flocculation reaction, and sedimentation separation. Its core is to use the sludge accumulated in the pool to contact and adsorb the particles in the water through the reflux outside the pool, accelerate the flocculation of particles, promote the rapid separation of impurity particles, and combine with inclined tubes or inclined plate fillers to accelerate the sedimentation process and achieve efficient solid-liquid separation.

[0004] In the flocculation sedimentation and chemical softening and hardness removal process, the high-efficiency sedimentation device is the most important equipment, and the stable operation of the high-efficiency sedimentation device is a very important link in the operation of the device. Factors affecting the stable operation of the high-efficiency sedimentation tank include: influent water quality, water volume, dosage, sludge discharge volume, sludge return volume, etc. When the influent water quality fluctuates greatly, in order to ensure the effluent water quality, the high-efficiency sedimentation device will be set to operate in series. For example, when the high-efficiency sedimentation device needs to remove hardness and silicon at the same time, since the optimal pH for hardness removal is 10.5-11, and the optimal pH for magnesium agent silicon removal is 10-10.3, by adding drugs and controlling the pH value, the hardness can be removed while removing part of the silicon. When the incoming water fluctuates greatly or the silicon content in the effluent water quality is strictly required, a secondary sedimentation device needs to be designed to remove silicon.

[0005] Existing high-efficiency precipitation devices such as Figure 1As shown, it includes two primary sedimentation devices A and B and one secondary sedimentation device. The primary sedimentation device A, the primary sedimentation device B and the secondary sedimentation device C all include a first coagulation tank 1, a second coagulation tank 2, a flocculation tank 3, a sedimentation tank 4 and a post-mixing tank 5 which are arranged in sequence along the wastewater treatment direction. The first coagulation tank 1 and the second coagulation tank 2 are both provided with a coagulation mixer 6, the flocculation tank 3 is provided with a flocculation mixer 7 and a guide tube 8, the sedimentation tank 4 is provided with a scraper 9, and the post-mixing tank 5 is provided with a post-coagulation mixer 10. The two primary sedimentation devices are one for use and one for standby. When the first coagulation tank 1 and the second coagulation tank 2 are opened, the first coagulation tank 1 and the second coagulation tank 2 are both provided with a coagulation mixer 6, the flocculation tank 3 is provided with a flocculation mixer 7 and a guide tube 8, the sedimentation tank 4 is provided with a scraper 9, and the post-mixing tank 5 is provided with a post-coagulation mixer 10. The first valve 11 is opened and the first valve 12 is closed to make the first-level sedimentation device A work and the first-level sedimentation device B standby; the first valve 11 is closed and the first valve 12 is opened to make the first-level sedimentation device A standby and the first-level sedimentation device B work; during operation, when the effluent water quality of the first-level sedimentation device meets the requirement, the second-level sedimentation device is not started, that is, the third valve 13 is opened and the fourth valve 14 is closed; when the effluent water quality of the first-level sedimentation device does not meet the standard, the second-level sedimentation device is started, that is, the third valve 13 is closed and the fourth valve 14 is opened to ensure that the effluent water quality meets the standard.

[0006] The existing high-efficiency sedimentation device requires two primary sedimentation devices A and B and one secondary sedimentation device, which has the problems of large footprint, relatively large investment, and heavy workload of equipment maintenance. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model provides a high-efficiency precipitation device which can be used as a standby device and can be operated in series.

[0008] The utility model discloses a high-efficiency sedimentation device which can be used in standby mode and can be operated in series, comprising: a sedimentation device M and a sedimentation device N;

[0009] The water inlet pipe of the sedimentation device M and the water inlet pipe of the sedimentation device N are interconnected with the wastewater delivery pipe, a first valve is installed on the water inlet pipe of the sedimentation device M, and a second valve is installed on the water inlet pipe of the sedimentation device N;

[0010] The outlet pipe of the sedimentation device M and the outlet pipe of the sedimentation device N are interconnected with the outlet pipe, a fifth valve is installed on the outlet pipe of the sedimentation device M, and a fourth valve is installed on the outlet pipe of the sedimentation device N;

[0011] The outlet pipe of the sedimentation device M is connected to the inlet pipe of the sedimentation device N through a series pipe, one end of the series pipe is connected to the upstream of the fifth valve, and the other end of the series pipe is connected to the downstream of the second valve. A third valve is provided on the series pipe.

[0012] As a further improvement of the utility model,

[0013] Open the first valve and the fifth valve, and close the second valve, the third valve, and the fourth valve, so that the sedimentation device M is in operation and the sedimentation device N is in standby;

[0014] Open the second valve and the fourth valve, and close the first valve, the third valve, and the fifth valve, so that the sedimentation device M is in standby mode and the sedimentation device N is in operation;

[0015] The first valve, the third valve, and the fourth valve are opened, and the second valve and the fifth valve are closed to realize the series operation of the sedimentation device M and the sedimentation device N.

[0016] As a further improvement of the utility model, the sedimentation device M and the sedimentation device N both include a first coagulation tank, a second coagulation tank, a flocculation tank, a sedimentation tank, and a post-mixing tank which are arranged in sequence along the wastewater treatment direction, wherein the first coagulation tank and the second coagulation tank are both provided with a coagulation stirrer, the flocculation tank is provided with a flocculation stirrer and a guide tube, the sedimentation tank is provided with a scraper, and the post-mixing tank is provided with a post-coagulation stirrer.

[0017] As a further improvement of the utility model, it also includes: a controller;

[0018] The first valve, the second valve, the third valve, the fourth valve and the fifth valve are electric valves;

[0019] The controller is connected to the first valve, the second valve, the third valve, the fourth valve and the fifth valve, and is used to realize remote control of the first valve, the second valve, the third valve, the fourth valve and the fifth valve.

[0020] As a further improvement of the utility model, a water quality detection sensor is provided on the water outlet delivery pipe, and the water quality detection sensor is connected to the input end of the controller;

[0021] The controller controls the corresponding opening and closing of the first valve, the second valve, the third valve, the fourth valve and the fifth valve based on the outlet water quality detected by the water quality detection sensor to realize the operation of the sedimentation device M and the sedimentation device N in a standby and one-use mode, or the operation of the sedimentation device M and the sedimentation device N in a series mode.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The utility model adopts two sedimentation devices, and through valve control, the two sedimentation devices can be used in a backup and a series operation. Compared with the existing high-efficiency sedimentation device, one sedimentation device is saved and the utilization rate is improved; and it has the advantages of reducing floor space, reducing investment costs, reducing equipment maintenance, and facilitating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a structural schematic diagram of an existing high-efficiency precipitation device;

[0025] Figure 2 The present invention is a schematic structural diagram of a high-efficiency sedimentation device that can be used in standby mode and can be operated in series according to an embodiment of the present invention.

[0026] In the figure:

[0027] Existing technology:

[0028] A, B, primary sedimentation device; C, secondary sedimentation device; 1, first coagulation tank; 2, second coagulation tank; 3, flocculation tank; 4, sedimentation tank; 5, post-mixing tank; 6, coagulation mixer; 7, flocculation mixer; 8, guide tube; 9, scraper; 10, post-coagulation mixer; 11, first valve; 12, second valve; 13, third valve; 14, fourth valve;

[0029] The utility model:

[0030] M, N, sedimentation device; 101, first coagulation tank; 102, second coagulation tank; 103, flocculation tank; 104, sedimentation tank; 105, post-mixing tank; 106, coagulation mixer; 107, flocculation mixer; 108, guide tube; 109, scraper; 110, post-coagulation mixer; 111, first valve; 112, second valve; 113, third valve; 114, fourth valve; 115, fifth valve. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0033] like Figure 2As shown, the utility model provides a high-efficiency sedimentation device which can be used in standby mode and can be operated in series, including: a sedimentation device M and a sedimentation device N, wherein the sedimentation device M and the sedimentation device N both include a first coagulation tank 101, a second coagulation tank 102, a flocculation tank 103, a sedimentation tank 104, and a post-mixing tank 105 which are sequentially arranged along the wastewater treatment direction, wherein the first coagulation tank 101 and the second coagulation tank 102 are each provided with a coagulation agitator 106, the flocculation tank 103 is provided with a flocculation agitator 107 and a guide tube 108, the sedimentation tank 104 is provided with a scraper 109, and the post-mixing tank 105 is provided with a post-coagulation agitator 110; at the same time, a dosing system, a detection instrument, etc. are also provided on the required tank body, which is a conventional structure in the field, so it will not be elaborated in detail here.

[0034] The water inlet pipe of the sedimentation device M and the water inlet pipe of the sedimentation device N of the utility model are interconnected with the wastewater delivery pipe, a first valve 111 is installed on the water inlet pipe of the sedimentation device M, and a second valve 112 is installed on the water inlet pipe of the sedimentation device N; the water outlet pipe of the sedimentation device M and the water outlet pipe of the sedimentation device N are interconnected with the water outlet delivery pipe, a fifth valve 115 is installed on the water outlet pipe of the sedimentation device M, and a fourth valve 114 is installed on the water outlet pipe of the sedimentation device N; the water outlet pipe of the sedimentation device M is connected to the water inlet pipe of the sedimentation device N through a series pipe, one end of the series pipe is connected to the upstream of the fifth valve 115, and the other end of the series pipe is connected to the downstream of the second valve 112, and a third valve 113 is provided on the series pipe, such as Figure 2 shown.

[0035] Based on the above structure, the utility model can realize the one-standby-one-use mode and the series working mode of the sedimentation device M and the sedimentation device N through the control between the valves; that is:

[0036] Open the first valve 111 and the fifth valve 115, and close the second valve 112, the third valve 113 and the fourth valve 114, so that the sedimentation device M is in operation and the sedimentation device N is in standby;

[0037] When the sedimentation device M needs to be repaired, the second valve 112 and the fourth valve 114 can be opened, and the first valve 111, the third valve 113 and the fifth valve 115 can be closed, so that the sedimentation device M is in standby mode and the sedimentation device N is in operation;

[0038] When the effluent quality of a single sedimentation device does not meet the standard, the first valve 111, the third valve 113, and the fourth valve 114 can be opened, and the second valve 112 and the fifth valve 115 can be closed to realize the series operation of the sedimentation device M and the sedimentation device N; thereby ensuring the effluent quality without affecting the operation of subsequent processes.

[0039] Specific:

[0040] During normal operation, the working process of starting the sedimentation device M and the sedimentation device N in standby mode is as follows: the incoming water first enters the first coagulation tank 101 to react with the corresponding reagent, then flows by gravity into the second coagulation tank 102 to react with the corresponding reagent, then flows by gravity into the flocculation tank 103 to continue to react with the corresponding reagent, and then enters the sedimentation tank 104 for sedimentation mud and water separation, and the effluent enters the post-mixing tank 105 for pH adjustment, and the produced water flows by gravity to the water production tank. It mainly removes hardness and part of silicon in the water. The main reagents added are: lime, magnesium agent, liquid alkali, coagulant and flocculant. By adding drugs and controlling the pH value (10.5-11), the hardness can be removed while removing part of the silicon.

[0041] When the water flow fluctuates greatly or other conditions cause the silicon content in the effluent water to fail to meet the requirements, the effluent of the sedimentation device M enters the sedimentation device N for further treatment. The sedimentation device N operated in series mainly removes silicon by adding chemicals. The main chemicals added are: sodium aluminate, coagulant and flocculant. The pH is controlled at 8.5-9 to ensure that the silicon content in the effluent water meets the requirements.

[0042] In normal operation, the coagulation mixer 106, the flocculation mixer 107, the scraper 109 and the post-coagulation mixer 110 in the device operate 24 hours a day.

[0043] In the above embodiment, when the sedimentation device M and the sedimentation device N adopt the one-standby-one-use operation mode, the main reagents added are: lime, magnesium agent, liquid alkali, coagulant and flocculant. By adding the reagents, the pH of the reaction is controlled at 10.5-11, and the reagents fully react with the hardness and silicon in the water to remove the hardness and silicon in the water.

[0044] In the above embodiment, when the precipitation device M and the precipitation device N are in series operation mode, the type and amount of the added agent of the precipitation device M are the same as those in the one-standby-one-use mode, and the main agents added by the precipitation device N are: sodium aluminate, coagulant and flocculant. By adding the agent, the pH of the reaction is controlled to be around 8.5-9, and the agent fully reacts with the silicon in the water to remove the silicon in the water.

[0045] On the basis of the above structure, the utility model may further include: a remote controller or control end; the first valve 111, the second valve 112, the third valve 113, the fourth valve 114 and the fifth valve 115 are electric valves; the controller is connected to the first valve 111, the second valve 112, the third valve 113, the fourth valve 114 and the fifth valve 115, and is used to realize remote control of the first valve 111, the second valve 112, the third valve 113, the fourth valve 114 and the fifth valve 115.

[0046] On this basis, the utility model can further choose to provide a water quality detection sensor (to detect the hardness and silicon content of the outlet water) on the outlet water delivery pipe, and the water quality detection sensor is connected to the input end of the controller; the controller controls the corresponding opening and closing of the first valve 111, the second valve 112, the third valve 113, the fourth valve 114 and the fifth valve 115 based on the outlet water quality detected by the water quality detection sensor, so as to realize the operation of the sedimentation device M and the sedimentation device N in a backup and use mode, or the operation of the sedimentation device M and the sedimentation device N in a series mode.

[0047] The advantages of the utility model are:

[0048] The utility model adopts two sedimentation devices, and through valve control, the two sedimentation devices can be used in series and one can be used as a backup. Figure 1 The optimized design is based on the series operation of the existing high-efficiency sedimentation devices shown. Compared with the existing high-efficiency sedimentation devices, the utility model saves a sedimentation device and improves the utilization rate; effectively guarantees the stability of the treatment effect of the device; effectively reduces the failure rate of spare devices such as mixers, scrapers, inclined tube fillers and other equipment caused by long-term standby and non-start-up; reduces the floor space and investment costs; the device control program is simple, easy to operate, and the entire process of the device can be automatically completed.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-efficiency precipitation device that can be used in standby mode and can be operated in series, characterized in that: include: Sedimentation device M and sedimentation device N; The water inlet pipe of the sedimentation device M and the water inlet pipe of the sedimentation device N are interconnected with the wastewater delivery pipe, a first valve is installed on the water inlet pipe of the sedimentation device M, and a second valve is installed on the water inlet pipe of the sedimentation device N; The outlet pipe of the sedimentation device M and the outlet pipe of the sedimentation device N are interconnected with the outlet pipe, a fifth valve is installed on the outlet pipe of the sedimentation device M, and a fourth valve is installed on the outlet pipe of the sedimentation device N; The outlet pipe of the sedimentation device M is connected to the inlet pipe of the sedimentation device N through a series pipe, one end of the series pipe is connected to the upstream of the fifth valve, and the other end of the series pipe is connected to the downstream of the second valve. A third valve is provided on the series pipe.

2. The high-efficiency precipitation device that can be used in standby mode and can be operated in series as claimed in claim 1, characterized in that: Open the first valve and the fifth valve, and close the second valve, the third valve, and the fourth valve, so that the sedimentation device M is in operation and the sedimentation device N is in standby; Open the second valve and the fourth valve, and close the first valve, the third valve, and the fifth valve, so that the sedimentation device M is in standby mode and the sedimentation device N is in operation; The first valve, the third valve, and the fourth valve are opened, and the second valve and the fifth valve are closed to realize the series operation of the sedimentation device M and the sedimentation device N.

3. The high-efficiency precipitation device that can be used in standby mode and can be operated in series as claimed in claim 1, characterized in that: Both the sedimentation device M and the sedimentation device N include a first coagulation tank, a second coagulation tank, a flocculation tank, a sedimentation tank and a post-mixing tank which are arranged in sequence along the wastewater treatment direction, wherein the first coagulation tank and the second coagulation tank are both provided with a coagulation mixer, the flocculation tank is provided with a flocculation mixer and a guide tube, the sedimentation tank is provided with a scraper, and the post-mixing tank is provided with a post-coagulation mixer.

4. The high-efficiency precipitation device that can be used in standby mode and can be operated in series as claimed in claim 1 is characterized in that: Also includes: Controller; The first valve, the second valve, the third valve, the fourth valve and the fifth valve are electric valves; The controller is connected to the first valve, the second valve, the third valve, the fourth valve and the fifth valve, and is used to realize remote control of the first valve, the second valve, the third valve, the fourth valve and the fifth valve.

5. The high-efficiency precipitation device capable of standby operation and serial operation as claimed in claim 4, characterized in that: A water quality detection sensor is provided on the water outlet delivery pipe, and the water quality detection sensor is connected to the input end of the controller; The controller controls the corresponding opening and closing of the first valve, the second valve, the third valve, the fourth valve and the fifth valve based on the outlet water quality detected by the water quality detection sensor to realize the operation of the sedimentation device M and the sedimentation device N in a standby and one-use mode, or the operation of the sedimentation device M and the sedimentation device N in a series mode.

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