Glass substrate cullet flue gas wastewater treatment system and recycling method

Abstract

The invention belongs to the technical field of glass flue gas wastewater treatment, and discloses a glass substrate cullet flue gas wastewater treatment system and a glass substrate cullet flue gas wastewater recycling method.The glass substrate cullet flue gas wastewater treatment system comprises a chlorination and denitrification device, a chlorine spraying device and a filtering device; the adding amount of sodium hypochlorite is adjusted through a sodium hypochlorite adding pump, sodium hypochlorite and cullet flue gas wastewater are fully mixed under the action of aeration of an aeration pipeline at the bottom of the denitrification reaction tower and a stirrer at the top of the denitrification reaction tower, ammonia nitrogen in the cullet flue gas wastewater reacts, and ammonia nitrogen is removed. And powder scraps are removed through filtering of a filtering material in a multi-medium filter in the filtering device, so that filtering is realized. Under the action of the spraying device, the adding amount of sodium hydrogen sulfite entering the spraying tower is controlled by adjusting the adding pump, excessive sodium hypochlorite is removed, chlorine is generated, and the technical problem that in the prior art, after ammonia nitrogen is removed, water resources are wasted due to direct discharging is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of glass fume wastewater treatment, and relates to a glass substrate cullet fume wastewater treatment system and a recycling method. Background Art

[0002] The wastewater generated when the production workshop uses recycled water to wash and cool the kiln, platinum and the broken glass in the forming process is called broken glass wastewater, which mainly contains a small amount of broken glass powder. The wastewater generated by the wet treatment of pool furnace flue gas is called flue gas, which mainly contains a small amount of suspended matter and ammonia nitrogen. The two types of wastewater are treated by a combined process. According to actual measurements, the amount of water generated by a hot end is about 10m 3 / h, ammonia nitrogen content. If the ammonia nitrogen is removed and then discharged directly, it will cause a waste of water resources.

[0003] The ammonia nitrogen in the wastewater from the flue gas of broken glass is first removed by the chemical treatment process of inflection point chlorination, and then the broken glass powder is removed by the sand filter process for reuse, which not only improves the utilization rate of water resources, but also realizes the national policy of zero emission. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention aims to provide a glass substrate cullet fume wastewater treatment system and a recycling method, wherein the sodium hypochlorite dosing amount is adjusted by a sodium hypochlorite dosing pump, the cullet fume wastewater is aerated in an aeration pipe at the bottom of a denitrification reaction tower and under the action of a top stirrer, the sodium hypochlorite is fully mixed with the cullet fume wastewater, ammonia nitrogen reacts to remove ammonia nitrogen, and the powder debris is removed by filtering through a filter material in a multi-media filter to achieve filtering, and the excess sodium hypochlorite is removed to generate chlorine by adjusting the sodium bisulfite dosing amount entering a spray tower, and under the action of a chlorination denitrification device, a filtering device, and a chlorine spraying device, ammonia nitrogen and powder debris in the cullet fume wastewater are effectively removed, the influence of ammonia nitrogen in the wastewater on the recycling equipment is prevented, the tap water consumption is reduced, the utilization rate of water resources is improved, and the technical problem that the direct discharge after the ammonia nitrogen removal in the prior art causes the waste of water resources is solved.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: The invention provides a wastewater treatment system for broken glass fume of a glass substrate, comprising a chlorination and denitrification device, a chlorine spraying device and a filtering device; the wastewater from broken glass fume is collected in the chlorination and denitrification device, the air outlet of the chlorination and denitrification device is connected with the air inlet of the chlorine spraying device, the water outlet of the chlorination and denitrification device is used to be connected with the water inlet of a primary reuse water pool, the water outlet of the primary reuse water pool is connected with the water inlet of a filtering device, the water outlet of the filtering device is connected to a secondary reuse water pool to supply to a reuse point, and the air outlet of the chlorine spraying device is connected to the atmosphere.

[0006] Furthermore, the chlorination and denitrification device includes a flue gas wastewater collection pool, a denitrification reaction tower, a dechlorination collection tower, and a sodium hypochlorite dosing pump; the flue gas wastewater collection pool is used to collect broken glass flue gas wastewater, the flue gas wastewater collection pool and the sodium hypochlorite dosing pump water outlets are connected to the denitrification reaction tower water inlet, the first denitrification reaction tower air outlet is connected to the dechlorination collection tower air inlet, the dechlorination collection tower air outlet is connected to the chlorine spray device air inlet, the dechlorination collection tower water outlet is connected to the first-level reuse water pool water inlet, the denitrification reaction tower and the dechlorination collection tower are used to remove ammonia nitrogen.

[0007] Furthermore, the filtering device includes a multi-media filter water inlet pump and a multi-media filter; the outlet of the first-level reuse water pool is connected to the inlet of the multi-media filter water inlet pump, the multi-media filter water inlet pump is connected to the inlet of the multi-media filter, the outlet of the multi-media filter is used to be connected to the inlet of the second-level reuse water pool, and the outlet of the second-level reuse water pool is connected to the reuse point.

[0008] Furthermore, the chlorine spraying device includes a dosing pump and a spray tower; the water outlet of the dosing pump is connected to the water inlet of the spray tower, the spray tower processes the chlorine collected by the denitrification reaction tower or the dechlorination collection tower, and the remaining gas is discharged to the atmosphere from the gas outlet.

[0009] Furthermore, a stirrer is provided at the upper end of the denitrification reaction tower, and an aeration pipe is provided on the side wall of the denitrification reaction tower. The aeration pipe is connected to the denitrification reaction tower. The fan blades of the stirrer pass through the upper wall of the denitrification reaction tower and enter the interior to fully mix the broken glass smoke waste water and sodium hypochlorite. A second air outlet is provided at the upper end of the denitrification reaction tower for connecting to a spray tower.

[0010] Furthermore, the chlorine spraying device also includes an exhaust fan, a sodium bisulfite storage tank and an exhaust fan; the water outlet of the sodium bisulfite storage tank is connected to the water inlet of the dosing pump, the air inlet of the exhaust fan is connected to the second air outlet of the denitrification reaction tower and the air outlet of the dechlorination collection tower, the air outlet of the exhaust fan is connected to the air inlet of the spray tower, and the chlorine generated by sodium hypochlorite enters the spray tower for chlorine treatment, the air inlet of the exhaust fan is connected to the air outlet of the spray tower, and the air outlet of the exhaust fan is connected to the atmosphere.

[0011] Furthermore, the chlorination and denitrification device also includes a lifting pump and a sodium hypochlorite tank; the water inlet of the lifting pump is connected to the water outlet of the flue gas wastewater collection pool, the water outlet is connected to the water inlet of the denitrification reaction tower, and the water outlet of the sodium hypochlorite tank is connected to the water inlet of the sodium hypochlorite dosing pump.

[0012] Furthermore, the filtering device also includes filter material and a reuse water pump; the filter material is installed in the multi-media filter, the water inlet of the reuse water pump is connected to the water outlet of the multi-media filter, and the water outlet is connected to the reuse point.

[0013] The present invention also provides a method for recycling wastewater from broken glass smoke of a glass substrate. The wastewater treatment system for broken glass smoke based on the above-mentioned glass substrate comprises the following steps: the wastewater from broken glass smoke enters a chlorination and denitrification device for storage first, starts to operate after the liquid level reaches a predetermined height, then mixes the wastewater from broken glass smoke with sodium hypochlorite to remove ammonia nitrogen, and enters a primary reuse water pool; a filtering device filters the liquid in the primary reuse water pool to remove powder debris, and the filtered liquid enters a secondary reuse water pool to be supplied to a reuse point; a chlorine spraying device collects chlorine in the chlorination and denitrification device, then neutralizes and removes excess sodium hypochlorite, and the treated waste gas enters the atmosphere.

[0014] Further, the operation starts after the liquid level reaches a predetermined height, including when the electricity price is in a valley stage and the liquid level reaches a predetermined height.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention discloses a wastewater treatment system for broken glass smoke of a glass substrate, which is composed of a chlorination denitrification device, a chlorine spraying device and a filtering device. When the broken glass smoke wastewater enters the chlorination denitrification device system, the sodium hypochlorite dosing pump is used to adjust the sodium hypochlorite dosage. Under the action of aeration in the aeration pipe at the bottom of the denitrification reaction tower and the top stirrer, the sodium hypochlorite is fully mixed with the wastewater, and the ammonia nitrogen in the wastewater reacts to remove the ammonia nitrogen. The filter material in the multi-media filter in the filtering device is filtered to remove the powder debris and achieve filtration. Under the action of the spraying device, the sodium bisulfite dosage entering the spraying tower is controlled by adjusting the dosing pump to remove the chlorine generated by the excess sodium hypochlorite. Under the action of the chlorination denitrification device, the filtering device and the chlorine spraying device, the ammonia nitrogen and powder debris in the broken glass smoke wastewater are effectively removed, and the influence of the ammonia nitrogen in the wastewater on the reuse equipment is prevented, thereby reducing the tap water consumption and improving the utilization rate of water resources.

[0016] The present invention discloses a glass substrate cullet fume wastewater treatment system, wherein the liquid levels of a fume wastewater collection tank, a primary reuse water tank, and a secondary reuse water tank and a valley electricity price determine the start and stop of the system operation.

[0017] The invention discloses a glass substrate cullet fume wastewater treatment system, wherein the dosage of sodium hypochlorite and sodium bisulfite varies with the concentration of ammonia nitrogen in the cullet fume wastewater.

[0018] The invention discloses a glass substrate cullet fume wastewater treatment system, wherein an aeration pipeline is arranged at the bottom of a denitrification reaction tower and a stirrer is arranged at the top to ensure that sodium hypochlorite and ammonia nitrogen in the cullet fume wastewater fully react.

[0019] The invention discloses a glass substrate cullet flue gas wastewater treatment system, wherein a dechlorination collection tower is arranged at the rear end of a denitrification reaction tower, and by extending the hydraulic retention time of flue gas wastewater treated with sodium hypochlorite, sufficient time is ensured for chlorine gas to float and collect, thereby achieving chlorine gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a flow chart of a system for treating cullet fume and wastewater of a glass substrate.

[0021] Reference numerals: 1- Flue gas wastewater collection pool; 2- Lifting pump; 3- Denitrification reaction tower; 4- Dechlorination collection tower; 5- Primary reuse water pool; 6- Multi-media filter inlet pump; 7- Multi-media filter; 8- Secondary reuse water pool; 9- Reuse water pump; 10- Sodium hypochlorite tank; 11- Sodium hypochlorite dosing pump; 12- Aeration pipeline; 13- Sodium sulfite storage tank; 14- Dosing pump; 15- Exhaust fan; 16- Spray tower; 17- Exhaust fan; 18- Mixer; 19- Filter material. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] Example 1 The present invention discloses a wastewater treatment system for cullet of a glass substrate, comprising a chlorination and denitrification device, a chlorine spraying device and a filtering device; the wastewater from the cullet is collected in a wastewater collection pool 1, enters a chlorination and denitrification device to remove ammonia nitrogen, the air outlet of the chlorination and denitrification device is connected with the air inlet of the chlorine spraying device, the water outlet of the chlorination and denitrification device is used to be connected with the water inlet of a primary reuse water pool 5, the water outlet of the primary reuse water pool 5 is connected with the water inlet of the filtering device, the water outlet of the filtering device is connected to a reuse point, and the air outlet of the chlorine spraying device is connected to the atmosphere.

[0024] Specifically, it is composed of a chlorination denitrification device, a chlorine spraying device and a filtering device. When the cullet smoke wastewater enters the chlorination denitrification device system, the sodium hypochlorite dosing pump 11 adjusts the sodium hypochlorite dosing amount. Under the aeration of the aeration pipe 12 at the bottom of the denitrification reaction tower 3 and the action of the top mixer 18, the sodium hypochlorite and the cullet smoke wastewater are fully mixed, and the ammonia nitrogen in the cullet smoke wastewater reacts to remove the ammonia nitrogen. The filtration is carried out by filtering the filter material 19 in the multi-media filter 7 in the filtering device to remove the powder debris and achieve filtration. Under the action of the spraying device, the sodium bisulfite dosing amount entering the spray tower 16 is controlled by adjusting the dosing pump 14 to remove the excess sodium hypochlorite to produce chlorine, such as Figure 1 shown.

[0025] The chlorination and denitrification device comprises a flue gas wastewater collection pool 1, a denitrification reaction tower 3, a dechlorination collection tower 4, and a sodium hypochlorite dosing pump 11; the flue gas wastewater collection pool 1 is used to collect broken glass flue gas wastewater, the water outlets of the flue gas wastewater collection pool 1 and the sodium hypochlorite dosing pump 11 are connected to the water inlet of the denitrification reaction tower 3, the first air outlet of the denitrification reaction tower 3 is connected to the air inlet of the dechlorination collection tower 4, the air outlet of the dechlorination collection tower 4 is connected to the air inlet of the chlorine spraying device, the water outlet of the dechlorination collection tower 4 is connected to the water inlet of the primary reuse water pool 5, and the denitrification reaction tower 3 and the dechlorination collection tower 4 are used to remove ammonia nitrogen.

[0026] It also includes a lifting pump 2 and a sodium hypochlorite tank 10; the water inlet of the lifting pump 2 is connected to the water outlet of the flue gas wastewater collection pool 1, and the water outlet is connected to the water inlet of the denitrification reaction tower 3. The water outlet of the sodium hypochlorite tank 10 is connected to the water inlet of the sodium hypochlorite dosing pump 11.

[0027] Specifically, the chlorination and denitrification device includes a flue gas and wastewater collection pool 1, a lifting pump 2, a denitrification reaction tower 3, a dechlorination collection tower 4, a sodium hypochlorite tank 10, and a sodium hypochlorite dosing pump 11.

[0028] The flue gas wastewater from broken glass is collected in the flue gas wastewater collection pool 1, and the volume of the flue gas wastewater collection pool 1 is adjusted. By setting the start and stop liquid levels, and the system starts to operate during the valley period of electricity price, the ammonia nitrogen concentration of the broken glass flue gas wastewater in the flue gas wastewater collection pool 1 is detected by an ammonia nitrogen online analyzer.

[0029] The water outlet of the flue gas wastewater collection pool 1 is connected to the water inlet of the lifting pump 2, and the water outlet of the lifting pump 2 is connected to the denitrification reaction tower 3 to ensure the lifting of the broken glass flue gas wastewater.

[0030] The denitrification reaction tower 3 is provided with a stirrer 18 at the upper end and an aeration pipe 12 at the lower end, which is mainly used to fully react sodium hypochlorite with ammonia nitrogen in the waste water of broken glass smoke to achieve the effect of removing ammonia nitrogen. The generated gas enters the dechlorination collection tower 4 from the first gas outlet and enters the exhaust fan 15 from the second gas outlet.

[0031] The sodium hypochlorite tank is arranged at one side of the water inlet of the denitrification reaction tower 3 , and the sodium hypochlorite dosing pump 11 is arranged between the sodium hypochlorite tank 10 and the denitrification reaction tower 3 to transfer the sodium hypochlorite in the sodium hypochlorite tank 10 to the denitrification reaction tower 3 .

[0032] The dechlorination collection tower 4 is arranged on one side of the denitrification reaction tower 3, wherein the first air outlet of the denitrification reaction tower 3 is connected to the air inlet of the dechlorination collection tower 4. The purpose of the dechlorination collection tower 4 is to allow the broken glass smoke wastewater treated by the denitrification reaction tower 3 to enter the dechlorination collection tower 4 for a certain period of time, to ensure that the excess sodium hypochlorite overflows to the top of the dechlorination collection tower 4, and to extract the excess chlorine under the action of the exhaust fan 15 of the chlorine spraying device, so as to reduce the harm of chlorine to the human body.

[0033] The outlet of the dechlorination collection tower 4 is connected to the inlet of the primary reuse water pool 5 to ensure that the water treated by the dechlorination collection tower 4 enters the primary reuse water pool 5 for water storage first, ensuring that the multi-media filter 7 of the filtering device has enough water for normal filtration.

[0034] The filtering device includes a multi-media filter water inlet pump 6 and a multi-media filter 7; the water outlet of the primary reuse water pool 5 is connected to the water inlet of the multi-media filter water inlet pump 6, the multi-media filter water inlet pump 6 is connected to the water inlet of the multi-media filter 7, the water outlet of the multi-media filter 7 is used to connect to the water inlet of the secondary reuse water pool 8, and the water outlet of the secondary reuse water pool 8 is connected to the reuse point. It also includes filter material 19 and a reuse water pump 9; the filter material 19 is installed in the multi-media filter 7, the water inlet of the reuse water pump 9 is connected to the water outlet of the multi-media filter 7, and the water outlet is connected to the reuse point.

[0035] Specifically, the filtering device includes a multi-media filter water inlet pump 6 , a multi-media filter 7 , a recycling water pump 9 , and filter material 19 .

[0036] The water outlet of the primary reuse water pool 5 is connected to the water inlet of the multi-media filter water inlet pump 6, which helps the water in the primary reuse water pool 5 to enter the multi-media filter 7 to achieve liquid transportation.

[0037] The multi-media filter 7 is provided with a filter material 19 , under the action of which the broken glass powder is removed.

[0038] The outlet of the multi-media filter 7 is connected to the inlet of the secondary reuse water pool 8, and the outlet of the secondary reuse water pool 8 is connected to the inlet of the reuse water pump 9. The water treated by the multi-media filter 7 enters the secondary reuse water pool 8 for water storage. When the liquid level reaches a certain height, the reuse water pump 9 is turned on and connected to the reuse point.

[0039] The chlorine spraying device includes a dosing pump 14 and a spray tower 16; the water outlet of the dosing pump 14 is connected to the water inlet of the spray tower 16, and the spray tower 16 processes the chlorine collected by the denitrification reaction tower 3 or the dechlorination collection tower 4, and the remaining gas is discharged to the atmosphere from the gas outlet.

[0040] It also includes an exhaust fan 15, a sodium bisulfite storage tank 13 and an exhaust fan 17; the water outlet of the sodium bisulfite storage tank 13 is connected to the water inlet of the dosing pump 14, the air inlet of the exhaust fan 15 is connected to the second air outlet of the denitrification reaction tower 3 and the air outlet of the dechlorination collection tower 4, the air outlet of the exhaust fan 15 is connected to the air inlet of the spray tower 16, and the chlorine generated by sodium hypochlorite is sent into the spray tower 16 for chlorine treatment, the air inlet of the exhaust fan 17 is connected to the air outlet of the spray tower 16, and the air outlet of the exhaust fan 17 is connected to the atmosphere.

[0041] Specifically, the chlorine spraying device includes a sodium bisulfite storage tank 13 , a dosing pump 14 , an exhaust fan 15 , a spray tower 16 , and an exhaust fan 17 .

[0042] The air inlet of the exhaust fan 15 is connected to the second air outlet of the denitrification reaction tower 3 and the air outlet of the dechlorination collection tower 4, and the air outlet of the exhaust fan 15 is connected to the air inlet of the spray tower 16. The exhaust fan 15 draws the chlorine gas at the top of the denitrification reaction tower 3 and the dechlorination collection tower 4 to the spray tower 16 through the air duct, so that the chlorine gas generated by the excess sodium hypochlorite enters the chlorine spray device for chlorine treatment.

[0043] A sodium bisulfite storage tank 13 and a dosing pump 14 are connected to one side of the water inlet of the spray tower 16 , and the amount of sodium bisulfite is controlled by the dosing pump 14 .

[0044] The spray tower 16 sprays and neutralizes the chlorine gas and sodium bisulfite liquid agent collected by the exhaust fan 15. The water inlet of the spray tower 16 is located at the upper end of the air inlet of the spray tower 16. The air outlet of the spray tower 16 is connected to the exhaust fan 17 to discharge the treated clean gas into the atmosphere to achieve gas emission.

[0045] A glass substrate cullet flue gas wastewater treatment system utilizes the liquid levels of a flue gas wastewater collection tank 1, a primary reuse water tank 5 and a secondary reuse water tank 8 to control the start or stop state of a lift pump 2 and a reuse water pump 9.

[0046] The concentration of sodium hypophosphite and sodium bisulfite added changes with the ammonia nitrogen content in the broken glass fume wastewater, reducing the consumption of chemicals.

[0047] Example 2 A method for recycling wastewater from broken glass smoke of a glass substrate comprises the following steps: the wastewater from broken glass smoke enters a chlorination and denitrification device for storage, starts to operate after the liquid level reaches a predetermined height, then mixes the wastewater from broken glass smoke with sodium hypochlorite to remove ammonia nitrogen, and enters a primary recycling water pool 5; a filtering device filters the liquid in the primary recycling water pool 5 to remove powder debris, and the filtered liquid enters a recycling point; a chlorine spraying device collects chlorine in the chlorination and denitrification device, then neutralizes and removes excess sodium hypochlorite, and the treated waste gas enters the atmosphere.

[0048] Specifically: the flue gas wastewater from broken glass first enters the flue gas wastewater collection pool 1 in the chlorination and denitrification device for regulation and storage. When the liquid level reaches a certain height and the electricity price is at the valley stage, the lifting pump 2 is turned on and the system is running. It should be noted that it must be confirmed that the liquid level and electricity price of the flue gas wastewater collection pool 1 are met at the same time. Then the lifting pump 2 lifts the wastewater to the denitrification reaction tower 3, turns on the sodium hypochlorite dosing pump 11, the aeration pipe 12 at the bottom of the denitrification reaction tower 3 and the top mixer 18, so that the broken glass flue gas wastewater and sodium hypochlorite are fully mixed, and the ammonia nitrogen is completely removed. The water treated by the denitrification reaction tower 3 overflows to the dechlorination collection tower 4, and overflows to the primary reuse water pool 5 after staying for a period of time.

[0049] The multi-media filter water inlet pump 6 is turned on. The water in the primary reuse water pool 5 is transported to the multi-media filter 7 for filtration to remove powder debris under the action of the multi-media filter water inlet pump 6. The filtered water enters the secondary reuse water pool 8 for storage. When the liquid level of the secondary reuse water pool 8 reaches a certain height and the electricity price is at a valley stage, the reuse water pump 9 is turned on to supply the water to the reuse point.

[0050] The exhaust fan 15 transports the chlorine in the denitrification reaction tower 3 and the dechlorination collection tower 4 to the spray tower 16, and the dosing pump 14 is turned on. The sodium bisulfite agent in the spray tower 16 will be sprayed from top to bottom to neutralize and remove excess sodium hypochlorite, and the exhaust fan 17 is turned on, and the clean exhaust gas after treatment enters the atmosphere.

[0051] If the ammonia nitrogen concentration in the flue gas wastewater collection pool 1 is 30mg / L-50mg / L, when the ammonia nitrogen in the flue gas wastewater collection pool 1 is 50mg / L, theoretically, 1095.5mg of sodium hypochlorite needs to be added to 1L of flue gas wastewater to completely remove the ammonia nitrogen. However, in view of the unstable ammonia nitrogen emissions on site, it is actually necessary to add excess sodium hypochlorite to remove the ammonia nitrogen. Therefore, sodium bisulfite is used to reduce the excess sodium hypochlorite.

[0052] It is estimated that 1L of broken glass smoke wastewater contains about 350mg of sodium hypochlorite that needs to be reduced with sodium bisulfite, and theoretically 489mg of sodium bisulfite is required. The present invention uses a spray tower 16 to remove sodium hypochlorite. In view of the closed circulation of the washing tower system, a 10% sodium bisulfite solution is actually configured on site, and it is replaced once every half a month to achieve the purpose of removing sodium hypochlorite.

[0053] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

Claims

1. A glass substrate cullet fume wastewater treatment system, characterized by: It includes a chlorination and denitrification device, a chlorine spraying device and a filtering device; The waste water from the flue gas of broken glass is collected in a chlorination and denitrification device. The air outlet of the chlorination and denitrification device is connected to the air inlet of the chlorine spray device. The water outlet of the chlorination and denitrification device is used to be connected to the water inlet of a primary reuse water pool (5). The water outlet of the primary reuse water pool (5) is connected to the water inlet of a filtering device. The water outlet of the filtering device is connected to a secondary reuse water pool (8) to supply to a reuse point. The air outlet of the chlorine spray device is connected to the atmosphere.

2. The glass substrate cullet fume wastewater treatment system according to claim 1, characterized in that: The chlorination and denitrification device comprises a flue gas and wastewater collection pool (1), a denitrification reaction tower (3), a dechlorination collection tower (4), and a sodium hypochlorite dosing pump (11); The flue gas wastewater collection pool (1) is used to collect broken glass flue gas wastewater; the water outlets of the flue gas wastewater collection pool (1) and the sodium hypochlorite dosing pump (11) are connected to the water inlet of the denitrification reaction tower (3); the first air outlet of the denitrification reaction tower (3) is connected to the air inlet of the dechlorination collection tower (4); the air outlet of the dechlorination collection tower (4) is connected to the air inlet of the chlorine spraying device; the water outlet of the dechlorination collection tower (4) is connected to the water inlet of the primary reuse water pool (5); the denitrification reaction tower (3) and the dechlorination collection tower (4) are used to remove ammonia nitrogen.

3. The glass substrate cullet fume wastewater treatment system according to claim 1, characterized in that: The filtering device comprises a multi-media filter water inlet pump (6) and a multi-media filter (7); The water outlet of the primary reuse water pool (5) is connected to the water inlet of the multi-media filter water inlet pump (6), the multi-media filter water inlet pump (6) is connected to the water inlet of the multi-media filter (7), the water outlet of the multi-media filter (7) is used to be connected to the water inlet of the secondary reuse water pool (8), and the water outlet of the secondary reuse water pool (8) is connected to the reuse point.

4. The glass substrate cullet fume wastewater treatment system according to claim 2, characterized in that: The chlorine gas spraying device comprises a dosing pump (14) and a spraying tower (16); The water outlet of the dosing pump (14) is connected to the water inlet of the spray tower (16). The spray tower (16) processes the chlorine gas collected by the denitrification reaction tower (3) or the dechlorination collection tower (4), and the remaining gas is discharged to the atmosphere from the gas outlet.

5. The glass substrate cullet fume wastewater treatment system according to claim 2, characterized in that: A stirrer (18) is arranged at the upper end of the denitrification reaction tower (3); an aeration pipe (12) is arranged on the side wall of the denitrification reaction tower (3); the aeration pipe (12) is connected to the denitrification reaction tower (3); the fan blades of the stirrer (18) pass through the upper wall of the denitrification reaction tower (3) and enter the interior to fully mix the cullet smoke waste water and the sodium hypochlorite; and a second air outlet is arranged at the upper end of the denitrification reaction tower (3) for connecting to a spray tower (16).

6. The glass substrate cullet fume wastewater treatment system according to claim 4, characterized in that: The chlorine spraying device further comprises an exhaust fan (15), a sodium bisulfite storage tank (13) and an exhaust fan (17); The water outlet of the sodium bisulfite storage tank (13) is connected to the water inlet of the dosing pump (14); the air inlet of the exhaust fan (15) is connected to the second air outlet of the denitrification reaction tower (3) and the air outlet of the dechlorination collection tower (4); the air outlet of the exhaust fan (15) is connected to the air inlet of the spray tower (16) to pass the chlorine generated by sodium hypochlorite into the spray tower (16) for chlorine treatment; the air inlet of the exhaust fan (17) is connected to the air outlet of the spray tower (16); and the air outlet of the exhaust fan (17) is connected to the atmosphere.

7. The glass substrate cullet fume wastewater treatment system according to claim 2, characterized in that: The chlorination and denitrification device also includes a lift pump (2) and a sodium hypochlorite tank (10); The water inlet of the lift pump (2) is connected to the water outlet of the flue gas wastewater collection pool (1), and the water outlet is connected to the water inlet of the denitrification reaction tower (3); the water outlet of the sodium hypochlorite tank (10) is connected to the water inlet of the sodium hypochlorite dosing pump (11).

8. The glass substrate cullet fume wastewater treatment system according to claim 3, characterized in that: The filtering device also includes filter material (19) and a recycling water pump (9); The filter material (19) is installed in the multi-media filter (7), the water inlet of the reuse water pump (9) is connected to the water outlet of the multi-media filter (7), and the water outlet is connected to the reuse point.

9. A method for recycling waste water from cullet fume of glass substrate, characterized in that: A system for treating wastewater from cullet gas based on a glass substrate according to any one of claims 1 to 8, comprising the following steps: The wastewater from broken glass flue gas enters the chlorination and denitrification device for storage first, and starts to operate after the liquid level reaches a predetermined height. After that, the wastewater from broken glass flue gas is mixed with sodium hypochlorite to remove ammonia nitrogen and enters the primary reuse water pool; The filtering device filters the liquid in the primary reuse water pool to remove powder debris, and the filtered liquid enters the secondary reuse water pool (8) and is supplied to the reuse point; The chlorine spray device collects the chlorine in the chlorination and denitrification device, then neutralizes and removes excess sodium hypochlorite, and the treated waste gas enters the atmosphere.

10. The method for recycling waste water from cullet gas of glass substrate according to claim 9, characterized in that: The operation starts after the liquid level reaches a predetermined height, including the operation starts after the electricity price is in a valley stage and the liquid level reaches a predetermined height.

Images