CN115745245A - Ecological safety is ecological processing module of sewage advanced treatment for buffer - Google Patents

Abstract

The invention discloses an ecological treatment module for advanced sewage treatment of an ecological safety buffer area, which belongs to the field of sewage treatment and comprises a standing area, a flocculation and precipitation area and a biological denitrification area, wherein a water inlet pipe is fixedly arranged above one side of the standing area, a first liquid pumping pipe is fixedly arranged on one side, opposite to the water inlet pipe, of the standing area, a first water pump is fixedly arranged on one side of the first liquid pumping pipe, a first connecting pipe is fixedly arranged on one side of the first water pump, the flocculation and precipitation area is positioned at the tail end of the first connecting pipe, and a second liquid pumping pipe is fixedly arranged at the bottom of the flocculation and precipitation area.

Description

An ecological treatment module for the advanced treatment of sewage in the ecological security buffer zone

technical field

The invention relates to the field of sewage treatment, and more specifically relates to an ecological treatment module for advanced treatment of sewage in an ecological safety buffer zone.

Background technique

With the development of my country's economy and society, the crisis of water resources and the pollution of the water environment have become increasingly serious, and the discharge of various types of sewage/wastewater has increased significantly, seriously threatening the water environment. The treatment of water pollution has become one of the hot spots in the field of environmental protection at home and abroad. Therefore, sewage/waste water will be treated through urban sewage treatment plants. The organic content of tail water discharged from urban sewage treatment plants in my country is very low, but it contains many toxic substances such as nitrogen, phosphorus and heavy metals. If the tail water is directly discharged into Natural water bodies, entering the water environment system will directly lead to the deterioration of the water quality of lakes and rivers.

Based on this, in order to prevent the tail water from being directly discharged into the natural water body, an ecological safety buffer zone is set up to buffer the up-to-standard tail water discharged from the sewage treatment plant, and then flow into the river. The ecological safety buffer zone, that is, the ecological space can be absorbed and degraded. It is a transitional zone to resist, alleviate and reduce ecological impact, and has the functions of conserving water sources, maintaining biodiversity, and stabilizing the ecology. The ecological safety buffer zone can reduce pollution, purify water quality, and further purify tail water. Reprocessing of up-to-standard tail water.

However, although the tail water of most urban sewage treatment plants in my country can meet the "Pollutant Discharge Standards for Urban Wastewater Treatment Plants", there is still a certain gap between the quality standards of surface water and the total amount of nitrogen and phosphorus in the tail water of sewage plants is still high. Some indicators are even several times higher than the surface water quality standards for Class V water pollutants in surface water. If they are directly discharged into the ecological security buffer zone without advanced treatment, it will still cause considerable damage to the ecological security buffer zone. pollution.

Therefore, there is an urgent need for an ecological treatment module for advanced treatment of sewage in the ecological security buffer zone to perform advanced treatment.

Contents of the invention

1. Technical problems to be solved

The purpose of the present invention is to provide an ecological treatment module for the advanced treatment of sewage in the ecological safety buffer zone, which can be used to treat the pollution carried in the tail water through the set static area, flocculation sedimentation area and biological denitrification area. Substances are removed, so that the discharged tail water can be further treated in depth, so that the treated tail water is discharged into the ecological security buffer zone, thereby effectively avoiding the occurrence of pollution to the ecological security buffer zone.

2. Technical solution

In order to solve the above problems, the present invention adopts the following technical solutions.

An ecological treatment module for the advanced treatment of sewage in an ecological safety buffer zone, including a static area, a flocculation sedimentation area, and a biological denitrification area. A suction pipe 1 is fixedly installed on the opposite side of the water inlet pipe, a water pump 1 is fixedly installed on one side of the suction pipe 1, a connecting pipe 1 is fixedly installed on one side of the water pump, and the flocculation and sedimentation area is located at the end of the connecting pipe 1 , the bottom of the flocculation and sedimentation area is fixedly installed with a suction pipe two, and the middle part of the outer side of the two suction pipes is fixedly installed with a feed pump, and one end of the two suction pipes is fixedly installed with a filter press, and the filter press A connecting pipe 2 is fixedly installed on one side, and a water pump 2 is fixedly installed in the middle of the outer side of the connecting pipe 2. The biological denitrification area is located on the side of the connecting pipe 2, and the biological denitrification area is located below the side opposite to the connecting pipe 2. A water outlet pipe is fixedly installed.

Further, a screen is fixedly installed above the inner side of the static area, and the screen is located below the water inlet of the water inlet pipe. A sand and gravel layer is arranged under the inner screen of the static area. An activated carbon filter layer is arranged below the layer.

Further, feeding hopper 1 is fixedly installed on the upper side of the flocculation sedimentation area, and feeding hopper 2 is fixedly installed on the opposite side of the upper side of the flocculation sedimentation area from feeding hopper 1, and a stirring member is installed in the middle of the inner side of the flocculation sedimentation area, A guide plate is fixedly installed on the inner middle wall of the flocculation and sedimentation zone.

Further, an aeration pipe is laid on the bottom of the biological denitrification area, a protective box is fixedly installed at one end of the aeration pipe, a heating plate is fixedly installed inside the protective box, and a connecting pipe three is fixedly installed on the bottom side of the protective box. An air pump is fixedly installed at the bottom of the connecting pipe 3, a feeding hopper 3 is fixedly installed on one side above the biological denitrification area, an oxygen observer is fixedly installed in the middle above the biological denitrification area, and the upper part of the biological denitrification area A pH meter is fixedly installed on the side opposite to the three feeding hoppers.

Further, a liquid level sensor is fixedly installed on the bottom side of the flocculation and sedimentation area, and the liquid level sensor is electrically connected to the water pump.

Further, the agitating member includes a motor, the motor is fixedly installed in the upper middle of the flocculation and sedimentation area, the output end of the motor is rotatably connected to a connecting shaft 1, and a number of stirring blades 1 are arranged on the outside of the connecting shaft 1. A connecting shaft 2 is arranged below the connecting shaft 1, the connecting shaft 1 and the connecting shaft 2 are fixedly connected by a coupling, and a number of stirring blades 2 are fixedly installed on the outside of the bottom of the connecting shaft 2, and the stirring blade 2 is located in the flocculation and sedimentation area above the bottom outlet.

Further, a temperature sensor is fixedly installed at the inner bottom of the biological denitrification zone, and the temperature sensor is electrically connected to the heating plate.

Further, an air valve is fixedly installed in the middle of the third connecting pipe.

Further, a number of exhaust holes are opened on the aeration pipe, and baffles are arranged inside the exhaust holes.

3. Beneficial effect

The advantages of the present invention are:

(1) In this scheme, the static area, the flocculation sedimentation area and the biological denitrification area are set up, and the tail water is simply purified in the static area, and then magnetic agents, flocculants and synthetic adsorbents are added to the interior of the flocculation sedimentation area. It is used to adsorb heavy metals and phosphorus contained in the water body, so as to remove pollutants in the tail water, and then remove the ammonia nitrogen organic compounds carried in the tail water through the biological denitrification zone, so that the discharged tail water can be further treated in depth. The treated tail water is discharged into the ecological security buffer zone, thereby effectively avoiding the occurrence of pollution to the ecological security buffer zone.

(2) Through the temperature sensor, heating plate and air pump and other structures set up in this scheme, it can control the internal environment of the water body in real time according to the specific requirements of biological bacteria during use, thereby speeding up the removal of pollutants carried in the tail water. purify.

(3) In this scheme, a feeding pump and a filter press are set up. The feed pump extracts the tail water inside the flocculation sedimentation area through the second suction pipe and sends it to the filter press. The filter press will dehydrate the pollutants. Thereby, the polluting substances are raised, which facilitates the removal of the polluting substances, and avoids the problem that the polluting substances are deposited at the bottom of the sedimentation tank, which is inconvenient to clean up.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the installation structure of the feeding pump of the present invention;

Fig. 3 is the schematic diagram of installation structure of activated carbon filter layer of the present invention;

Fig. 4 is the schematic diagram of guide plate installation structure of the present invention;

Fig. 5 is a schematic diagram of the installation structure of the second connecting shaft of the present invention;

Fig. 6 is a schematic diagram of the installation structure of the temperature sensor of the present invention;

Fig. 7 is a schematic diagram of the installation structure of the aeration tube of the present invention;

Fig. 8 is a schematic diagram of the installation structure of the heating plate of the present invention.

Explanation of symbols in the figure:

1. Static area; 2. Water inlet pipe; 3. Connecting pipe 1; 4. Feeding hopper 1; 5. Feeding hopper 2; 6. Flocculation and sedimentation area; Liquid pipe one; 10. Water pump one; 11. Liquid pumping pipe two; 12. Feed pump; 13. Filter press; 14. Water pump two; 15. Connecting pipe two; 16. Motor; 18. Activated carbon filter layer; 19 , gravel layer; 20, screen mesh; 21, liquid level sensor; 22, guide plate; 23, stirring blade one; 24, connecting shaft one; 25, connecting shaft two; 26, stirring blade two; 27, coupling; 28. Temperature sensor; 29. Hopper three; 30. Oxygen observer; 31. PH meter; 32. Air pump; 33. Protection box; 34. Aeration pipe; 35. Heating plate.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only part of the embodiments of the present invention, not all embodiments, based on The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1:

Please refer to Figure 1-8, an ecological treatment module for the advanced treatment of sewage in the ecological safety buffer zone, including a static area 1, a flocculation sedimentation area 6, and a biological denitrification area 7, and a feeder is fixedly installed on one side of the static area 1 Water pipe 2, a liquid suction pipe-9 is fixedly installed on the side opposite to the water inlet pipe 2 on the static area 1, a water pump-10 is fixedly installed on one side of the liquid suction pipe-9, and a connecting pipe-3 is fixedly installed on one side of the water pump-10 , the flocculation sedimentation area 6 is located at the end of the connecting pipe 1 3, the bottom of the flocculation sedimentation area 6 is fixedly installed with a suction pipe 2 11, the outer middle part of the suction pipe 2 11 is fixedly installed with a feed pump 12, and one end of the suction pipe 11 is fixedly installed with a The filter press 13, after the pollutants are precipitated, will be extracted by the feed pump 12 through the suction pipe 2 11, and sent to the filter press 13, and the filter press 13 will dehydrate the pollutants, so as to extract the pollutants, The purified tail water will flow into the biological denitrification area 7 for denitrification work. A connecting pipe 2 15 is fixedly installed on one side of the filter press 13, and a water pump 2 14 is fixedly installed in the middle of the outer side of the connecting pipe 2 15. The biological denitrification area 7 Located on the side of the connecting pipe 2 15, an outlet pipe 8 is fixedly installed below the side of the biological denitrification area 7 opposite to the connecting pipe 2 15, which can purify the tail water again.

Please refer to Fig. 3, a screen 20 is fixedly installed on the inside of the static area 1, and the screen 20 is located below the water inlet of the water inlet pipe 2. A sandstone layer 19 is arranged under the screen 20 inside the static area 1. An activated carbon filter layer 18 is arranged below the sand layer 19, a screen 20 is fixedly installed above the inside of the resting area 1, and the screen 20 is located below the water inlet of the water inlet pipe 2, and a sand layer is arranged below the screen 20 inside the resting area 1. 19. An activated carbon filter layer 18 is provided below the sand and gravel layer 19 inside the static area 1 .

Please refer to Figures 4 and 5, a feeding hopper 4 is fixedly installed on the side above the flocculation sedimentation area 6, and a feeding hopper 2 5 is fixedly installed on the opposite side of the flocculation sedimentation area 6 above the feeding hopper 1 4, and the middle part of the inner side of the flocculation sedimentation area 6 is set Stirring piece is arranged, and stirring piece comprises electric motor 16, and electric motor 16 is fixedly installed in the upper middle part of flocculation sedimentation area 6, and the output end of motor 16 is connected with connecting shaft-24 in rotation, and several stirring blades-23 are arranged on the outside of connecting shaft-24, and connecting shaft The second connecting shaft 25 is arranged below the first 24, the first connecting shaft 24 and the second connecting shaft 25 are fixedly connected by a coupling 27, and a plurality of stirring blades 26 are fixedly installed outside the bottom of the connecting shaft two 25, and the second stirring blades 26 are located in the flocculation and sedimentation area 6 Above the water outlet at the bottom, the motor 16 works at the same time, and the output end rotates, driving the lower connecting shaft 1 24 and connecting shaft 2 25 to rotate, which is used to drive the outer stirring blade 1 23 and stirring blade 2 26 to stir the tail water, so that the medicament Fully mixed with the tail water, a guide plate 22 is fixedly installed on the inner wall of the flocculation sedimentation area 6, and the tail water is drawn into the inner side of the flocculation sedimentation area 6 through the connecting pipe 3 during the extraction process, and then the operator will pass through the feeding hopper 1 4 Add magnetic agents and flocculants to the interior of the flocculation and sedimentation zone 6, the added flocculants will produce a micro-flocculation process, and adding magnetic agents will endow the flocs with magnetism, adsorb the heavy metals remaining in the tail water, and at the same time pass through the feeding hopper 2. Put synthetic adsorbents into the flocculation and sedimentation zone 6 to adsorb phosphorus contained in the tail water. The synthetic adsorbents are made of oxides and salts of various metals such as aluminum, magnesium, iron, calcium, titanium, zirconium and lanthanum. When the synthetic adsorbent adsorbs phosphorus, it will crystallize and precipitate downward. A liquid level sensor 21 is fixedly installed on the bottom side of the flocculation sedimentation area 6. The liquid level sensor 21 is electrically connected to the water pump 10. The liquid level sensor 21 is used to sense the change of the water level in the flocculation-sedimentation zone 6, and when the water level in the flocculation-settling zone 6 is insufficient, the water pump 10 will pump water.

Please refer to Fig. 6-8, an aeration pipe 34 is laid on the bottom of the biological denitrification area 7, and a number of vent holes are provided on the aeration pipe 34, and a baffle is arranged inside the vent hole, which is used to block the water body. One end of the trachea 34 is fixedly equipped with a protective box 33, the inner side of the protective box 33 is fixedly equipped with a heating sheet 35, the bottom side of the protective box 33 is fixedly installed with a connecting pipe 3, and the middle part of the connecting pipe 3 is fixedly installed with an air valve to block the heating gas. An air pump 32 is fixedly installed at the bottom of the connecting pipe 3, and the air pump 32 works to oxygenate the water body through the aeration pipe 34, so that the oxygen in the water body is in a sufficient state. It is electrically connected with the heating plate 35, and is used to control the temperature of the water body. The feeding hopper 3 29 is fixedly installed on the side above the biological denitrification area 7, and the oxygen observer 30 is fixedly installed in the middle of the upper part of the biological denitrification area 7. A PH meter 31 is fixedly installed on the side opposite to the feeding hopper 3 29 on the area 7. The operator adds nitrifying bacteria through the feeding hopper 3 29. The nitrifying bacteria will convert the ammonia nitrogen organic compound in the tail water into nitrate, and the nitrifying bacteria and the ammonia nitrogen organic compound During the reaction, there is a requirement for the temperature in the water. The temperature sensor 28 at the bottom senses the temperature of the water, so that the heating sheet 35 works, and the water body is heated by the aeration pipe 34. The pH meter 31 provided observes the pH value of the water body, and The set oxygen observer 30 monitors the oxygen content in the water.

When in use: when performing advanced treatment on the tail water, the discharged tail water is discharged to the inner side of the static area 1 through the water inlet pipe 2. When discharging, the tail water will fall on the screen 20, and the screen 20 is opposite to the water carried in the tail water. Larger impurities are screened out, and the screened tail water flows downward into the sand layer 19, and the sand layer 19 filters it again, and the filtered tail water flows down to the activated carbon filter layer 18, The activated carbon filter layer 18 will filter and adsorb the tail water again, and at the same time remove the taste carried by the tail water. After the filtration, the tail water will flow into the bottom of the static area 1 for static treatment.

Then the water pump one 10 works, and the tail water after being left still is extracted through the suction pipe one 9. During the extraction process, the tail water will flow into the inner side of the flocculation sedimentation area 6 through the connecting pipe one 3, and then the operator will pass through the feeding hopper one. 4 Add magnetic agents and flocculants to the interior of the flocculation and sedimentation zone 6, the added flocculants will produce a micro-flocculation process, and adding magnetic agents will endow the flocs with magnetism, adsorb the heavy metals remaining in the tail water, and at the same time pass through the feeding hopper 2. Put synthetic adsorbents into the flocculation and sedimentation zone 6 to adsorb phosphorus contained in the tail water. The synthetic adsorbents are made of oxides and salts of various metals such as aluminum, magnesium, iron, calcium, titanium, zirconium and lanthanum. When the synthetic adsorbent adsorbs phosphorus, it will crystallize and precipitate downward.

When the tail water is passing through the addition of chemicals, the motor 16 works at the same time, and the output end rotates, driving the lower connecting shaft 1 24 and connecting shaft 2 25 to rotate, which is used to drive the outer stirring blade 1 23 and stirring blade 2 26 to stir the tail water , so that the agent and the tail water are fully mixed, which is used to accelerate the flocculation and crystallization of the pollutants carried in the tail water, thereby accelerating the precipitation of the pollutants. When the pollutants are precipitated, they will be extracted by the feed pump 12 through the suction pipe 2 11 , and sent to the filter press 13, the filter press 13 will dehydrate the pollutants, so as to remove the pollutants, and the purified tail water will flow into the biological denitrification zone 7 for nitrogen removal.

After the tail water flows into the biological denitrification zone 7, the operator adds nitrifying bacteria through the feeding hopper 3 29. The nitrifying bacteria will convert the ammonia nitrogen organic compound in the tail water into nitrate. When the nitrifying bacteria react with the ammonia nitrogen organic compound, the water temperature has Requirements, the temperature sensor 28 that is positioned at the bottom senses the temperature of water, thereby makes heating plate 35 work, and water body is heated through aeration pipe 34, and the PH instrument 31 that is set observes the pH value of water body, and the oxygen observer 30 that is set is right The oxygen content in the water is monitored to accelerate the conversion of ammonia nitrogen organic compounds. Nitrifying bacteria consume a large amount of oxygen during use, so the air pump 32 works to oxygenate the water body through the aeration tube 34, so that the oxygen in the water body is in a sufficient state.

After nitrifying bacteria convert ammonia nitrogen organic compounds into nitrate, denitrifying bacteria need to be added to convert nitrate into nitrogen gas, so that nitrogen-containing organic compounds are finally converted into nitrogen gas, which overflows from the tail water. Because denitrifying bacteria like anaerobic environment, and The water temperature is higher, so the temperature sensor 28 located at the bottom senses the temperature of the water, and the heating plate 35 heats the water body again. During the heating process, the oxygen contained in the water is gradually consumed, thereby accelerating the conversion of nitrate into nitrogen by denitrifying bacteria. During the process, the ammonia nitrogen organic compound carried in the tail water is removed, and the purified water is discharged through the outlet pipe 8 .

The above description is only a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention and its improved concept to make equivalent replacements or changes shall fall within the scope of protection of the present invention.

Claims (9)

1. an ecological treatment module for the advanced treatment of sewage in an ecological safety buffer zone, comprising a static area (1), a flocculation sedimentation area (6) and a biological denitrification area (7), characterized in that: the static area ( 1) A water inlet pipe (2) is fixedly installed on one side, and a suction pipe (9) is fixedly installed on the side opposite to the water inlet pipe (2) in the static area (1), and the liquid suction pipe (9) is fixedly installed on the side opposite to the water inlet pipe (2). 9) A water pump (10) is fixedly installed on one side, and a connecting pipe (3) is fixedly installed on one side of the water pump (10). The flocculation and sedimentation area (6) is located at the end of the connecting pipe (3). A suction pipe two (11) is fixedly installed at the bottom of the flocculation sedimentation area (6), and a feed pump (12) is fixedly installed in the outer middle part of the two suction pipes (11), and one end of the two suction pipes (11) A filter press (13) is fixedly installed, and a connection pipe two (15) is fixedly installed on one side of the filter press (13), and a water pump two (14) is fixedly installed in the middle of the outer side of the connection pipe two (15). The biological denitrification zone (7) is located on the side of the connecting pipe two (15), and the biological denitrification zone (7) is fixedly installed with an outlet pipe (8) below the side opposite to the connecting pipe two (15). 2. The ecological treatment module for the advanced treatment of sewage in a kind of ecological safety buffer zone according to claim 1, characterized in that: a sieve (20) is fixedly installed on the inner side of the resting area (1), and the sieve The net (20) is located below the water inlet of the water inlet pipe (2), and a sandstone layer (19) is arranged under the screen (20) inside the static area (1), and the sandstone layer (19) is arranged inside the static area (1). (19) below is provided with activated carbon filter layer (18). 3. The ecological treatment module for the advanced treatment of sewage in a kind of ecological safety buffer zone according to claim 1, characterized in that: the upper side of the flocculation and sedimentation area (6) is fixedly equipped with a feeding hopper one (4), so Feeding hopper two (5) is fixedly installed above the flocculation and sedimentation area (6) on the opposite side of the hopper one (4), and a stirring member is arranged in the middle of the inner side of the flocculation and sedimentation area (6), and the flocculation and sedimentation area (6) ) guide plate (22) is fixedly installed on the inner wall body. 4. The ecological treatment module for the advanced treatment of sewage in a kind of ecological safety buffer zone according to claim 1, characterized in that: an aeration pipe (34) is laid on the bottom of the biological denitrification zone (7), and the aeration pipe (34) is laid on the bottom of the aeration zone A protective box (33) is fixedly installed at one end of the trachea (34), a heating plate (35) is fixedly installed inside the protective box (33), and a connecting pipe three is fixedly installed on the bottom side of the protective box (33). An air pump (32) is fixedly installed at the bottom of the connecting pipe three, a feeding hopper three (29) is fixedly installed on the upper side of the biological denitrification area (7), and an oxygen observation unit is fixedly installed in the upper middle of the biological denitrification area (7). instrument (30), and a pH instrument (31) is fixedly installed on the side opposite to the feeding hopper three (29) on the biological denitrification zone (7). 5. The ecological treatment module for the advanced treatment of sewage in a kind of ecological safety buffer zone according to claim 3, characterized in that: a liquid level sensor (21) is fixedly installed on one side of the bottom of the flocculation and sedimentation area (6), and the The liquid level sensor (21) is electrically connected with the water pump one (10). 6. The ecological treatment module for the advanced treatment of sewage in a kind of ecological safety buffer zone according to claim 3, characterized in that: the stirring member includes a motor (16), and the motor (16) is fixedly installed in the flocculation sedimentation In the upper middle part of the area (6), the output end of the motor (16) is connected to a connecting shaft one (24) in rotation, and a plurality of stirring blades one (23) are arranged on the outside of the connecting shaft one (24), and the connecting shaft one ( 24) The second connecting shaft (25) is arranged below, the first connecting shaft (24) and the second connecting shaft (25) are fixedly connected by a coupling (27), and the outer bottom of the second connecting shaft (25) is fixedly installed with Two stirring blades (26), the second stirring blades (26) are located above the water outlet at the bottom of the flocculation and sedimentation zone (6). 7. The ecological treatment module for the advanced treatment of sewage in a kind of ecological safety buffer zone according to claim 4, characterized in that: a temperature sensor (28) is fixedly installed at the inner bottom of the biological denitrification zone (7), and the The temperature sensor (28) is electrically connected to the heating sheet (35). 8 . The ecological treatment module for the advanced treatment of sewage in the ecological safety buffer zone according to claim 4 , wherein an air valve is fixedly installed in the third middle part of the connecting pipe. 9. The ecological treatment module for the advanced treatment of sewage in a kind of ecological safety buffer zone according to claim 4, characterized in that: the aeration pipe (34) is provided with some vent holes, and the inside of the vent holes A stopper is provided.

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