CN203440175U - Oily wastewater treatment system - Google Patents

Abstract

The utility model relates to an oily waste water treatment system. A water diversion channel communicates with a first grease trap through a water inlet provided with a ram, the first grease trap communicates with a second grease trap, and the second grease trap communicates with a second grease trap. The third grease trap is connected, the third grease trap is connected with the fourth grease trap, the fourth grease trap is connected with the fifth grease trap, the fifth grease trap is connected with the sixth grease trap, The turning pool is connected to the balance pool, the balance pool is connected to the filter tank, the filter tank is connected to the clear water tank, and the clean water tank is connected to the outside world, and the waste oil in the oily wastewater is purified by using the difference in specific gravity between water and oil in the oily wastewater The investment cost of the whole system is low, the purification effect is obvious, the purified water resources meet the requirements of the national sewage discharge standard, energy saving and environmental protection, the process is simple, the treatment and purification ability is strong, the water resources are protected from pollution, the water resources are purified, and the water resources are protected. environment.

Description

A kind of oily wastewater treatment system

technical field

The utility model relates to the field of environmental protection, in particular to an oily wastewater treatment system.

Background technique

Sewage treatment is the process of purifying sewage to meet the water quality requirements for reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people. According to the classification of sewage sources, sewage treatment is generally divided into production sewage treatment and domestic sewage treatment. Production sewage includes industrial sewage, agricultural sewage and medical sewage, etc., while domestic sewage is sewage produced in daily life, which refers to a complex mixture of various forms of inorganic and organic substances, including: floating and suspended solid particles of large and small sizes; colloidal and Gel-like diffuser; pure solution. According to the nature of water pollution, there are two types of water pollution: one is natural pollution; the other is man-made pollution. Water pollution can be divided into three categories: chemical pollution, physical pollution and biological pollution according to the different impurities. Pollutants mainly include: industrial wastewater discharged without treatment; domestic sewage discharged without treatment; farmland sewage with extensive use of chemical fertilizers, pesticides, and herbicides; industrial waste and domestic garbage piled up by the river; soil erosion; Mine sewage. There are many ways to treat sewage, which can be generally classified into physical methods, chemical methods and biological methods. Physical method: It mainly uses physical action to separate insoluble substances in sewage, and does not change the chemical properties during the treatment process. Commonly used are gravity separation, centrifugal separation, reverse osmosis, air flotation and so on. The physical method is relatively simple and economical to treat structures, and is used in villages and towns where the water body has a large capacity, strong self-purification ability, and low requirements for sewage treatment; biological method: utilizes the metabolic function of microorganisms to decompose and oxidize dissolved or colloidal organic matter in sewage It is a stable inorganic substance that can purify sewage. Commonly used are activated sludge method and biofilm method. The treatment degree of biological method is higher than that of physical method; chemical method: it is a method of using chemical reaction to treat or recover dissolved or colloidal substances in sewage, and it is mostly used in industrial wastewater. Commonly used are coagulation method, neutralization method, redox method, ion exchange method and so on. The chemical treatment method has good treatment effect and high cost, and is mostly used as the effluent after biochemical treatment for further treatment to improve the quality of the effluent.

At present, man-made pollution is more harmful to water bodies. Therefore, the production of an oily wastewater treatment system with simple structure, convenient operation, high work efficiency, simple process, strong treatment and purification ability, energy saving and environmental protection has broad market prospects.

Contents of the invention

Aiming at the deficiencies of the prior art, the utility model provides an oily wastewater treatment system with simple structure, convenient operation, high work efficiency, simple process, strong treatment and purification ability, energy saving and environmental protection.

The technical scheme of the utility model is realized in the following way: a system for treating oily wastewater, comprising a water diversion ditch and a water diversion ditch shutter arranged at the end of the water diversion ditch. The oil tanks are connected, the bottom of the first grease trap is connected with the bottom of the second grease trap through the first connection port, and the bottom of the second grease trap is connected with the bottom of the third grease trap through the second connection port , the bottom of the third grease trap communicates with the bottom of the fourth grease trap through the third connection port, the bottom of the fourth grease trap communicates with the bottom of the fifth grease trap through the fourth connection port, and the fifth grease trap The bottom of the oil pool communicates with the bottom of the sixth grease trap through the fifth connection port, and a turning pool is arranged in the sixth grease trap, and an oil separator is arranged on the outside of the turning pool, and the bottom of the turning pool is connected to the The bottom of the balance pool is connected, and a temporary sewage gate is set between the balance pool and the water diversion ditch. The balance pool is connected with the filter tank, and the filter tank is equipped with a grid-shaped carbon block filter frame. The filter tank is connected with the clean water pool, and the clean water The pool is connected with the outside world through the drain port with a drain gate, and a drain pipe is installed on the upper part of the clear water pool, and the other end of the drain pipe is connected with the oil collection wells on the side of the third and fourth grease traps , the end of the drain pipe is provided with an inverted funnel-shaped water suction port at the lower part of the oil collection well, the oil collection well is connected with the oil collection tank, the upper part of the fourth oil separation tank is connected with the oil collection well through the first oil collection pipe, and the fifth oil separation tank is connected with the oil collection well. The tank is connected to the oil collection well through the second oil collection pipe, the third oil separation tank is connected to the oil collection tank through the third oil collection pipe, the second oil separation tank is connected to the oil collection tank through the fifth oil collection pipe, and the first oil separation tank is connected to the oil collection tank through the fifth oil collection pipe. The sixth oil collecting pipe communicates with the oil collecting tank, the sixth oil separating tank communicates with the oil collecting tank through the eighth oil collecting pipe, and a water collecting well is arranged in the fourth oil separating tank.

The first grease trap, the second grease trap, the third grease trap, the fourth grease trap, the fifth grease trap and the sixth grease trap are arranged side by side in two rows and three columns. The oil tank, the second grease trap and the third grease trap are in a row, the fourth grease trap, the fifth grease trap and the sixth grease trap are in a row, the water inlet, the first connection port, the second connection port, The third connection port, the fourth connection port and the fifth connection port are distributed in a zigzag shape.

The level of the communication position between the drainage pipe and the oil collection well is not lower than the level of the communication position between the drainage pipe and the clear water pool, and the level of the communication position between the first oil collection pipe and the oil collection well is not higher than the level of the communication position between the first oil collection pipe and the clear water pool. The horizontal plane of the communicating position of the fourth oil trap, the horizontal plane of the communicating position of the second oil collecting pipe and the oil collecting well is not higher than the horizontal plane of the communicating position of the second oil collecting pipe and the fifth oil trap, the third oil collecting pipe and the The level of the communication position of the oil collection tank is not higher than the level of the connection position of the third oil collection pipe and the third oil separation tank, and the level of the connection position of the fifth oil collection pipe and the oil collection tank is not higher than that of the fifth oil collection pipe and the second oil separation tank The horizontal plane of the communication position of the pool, the horizontal plane of the communication position of the sixth oil collection pipe and the oil collection tank is not higher than the horizontal plane of the communication position of the sixth oil collection pipe and the first oil separation tank, and the horizontal plane of the communication position of the eighth oil collection pipe and the oil collection tank No higher than the level of the position where the eighth oil collecting pipe communicates with the sixth oil trap.

The oil separator is arranged in the sixth grease separator through the oil separator support body, the height of the oil separator is 1/2 of the height of the sixth grease separator, and the top of the oil separator is connected to the sixth grease separator. The top is on the same level.

The oil collecting grooves are arranged on one side of the first grease trap, the second grease trap and the third grease trap, and are distributed in a right angle shape.

The grid-shaped carbon block filter frame is set in the filter tank through the groove of the filter frame.

The utility model has the following positive effects: firstly, the utility model has a simple and reasonable structure, utilizes the difference in specific gravity between water and oil in the oily wastewater to purify the waste oil in the oily wastewater, the investment cost of the whole system is low, the purification effect is obvious, and the purification The final water resources meet the requirements of national sewage discharge standards, energy saving and environmental protection. The system uses multiple grease traps to deeply purify oily wastewater, and uses multiple methods to treat sewage. The process is simple, the treatment and purification capabilities are strong, and water resources are protected from pollution. , Purify water resources and protect the environment.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the structure of the oil collecting well of the utility model.

Fig. 3 is a structural schematic diagram of the oil separator of the present invention.

Detailed ways

As shown in Figures 1, 2 and 3, an oily wastewater treatment system includes a water diversion ditch 1, a water diversion ditch gate 2 arranged at the end of the water diversion ditch 1, and the water diversion ditch 1 passes through a water inlet provided with a gate plate 3 communicates with the first grease trap 4, the bottom of the first grease trap 4 communicates with the bottom of the second grease trap 5 through the first connection port 10, and the bottom of the second grease trap 5 passes through the second connection port 11 communicates with the bottom of the third grease trap 6, the bottom of the third grease trap 6 communicates with the bottom of the fourth grease trap 7 through the third connection port 12, and the bottom of the fourth grease trap 7 passes through the fourth The connection port 13 communicates with the bottom of the fifth grease trap 8, and the bottom of the fifth grease trap 8 communicates with the bottom of the sixth grease trap 9 through the fifth connection port 14, and is set in the sixth grease trap 9 There is an overturning pool 19, and an oil separator 16 is arranged on the outside of the overturning pool 19. The bottom of the overturning pool 19 is connected to the bottom of the balance pool 20 through the sixth connection port 21, and a temporary sewage gate is set between the balance pool 20 and the water diversion ditch 1 Plate 38, balance tank 20 is connected with filter tank 22, and filter tank 22 is provided with mesh carbon block filter frame 24, and filter tank 22 is connected with clear water pool 25, and clear water pool 25 is provided with drain gate 26 and The outside world is connected, and a drainpipe 28 is arranged on the top of the clear water pool 25, and the other end of the drainpipe 28 communicates with the oil collection well 29 that is arranged on one side of the third grease trap 6 and the fourth grease trap 7, and the drainpipe 28 The end portion of the bottom of the oil collection well 29 is provided with an inverted funnel-shaped water suction port 17, the oil collection well 29 communicates with the oil collection tank 37, and the top of the fourth oil separation tank 7 communicates with the oil collection well 29 through the first oil collection pipe 30, The fifth oil trap 8 communicates with the oil well 29 through the second oil collector 31, the third oil trap 6 communicates with the oil sump 37 through the third oil collector 32, and the second oil trap 5 communicates with the oil trap 34 through the fifth oil trap 34. It communicates with the oil collection tank 37, the first oil separation tank 4 communicates with the oil collection tank 37 through the sixth oil collection pipe 35, the sixth oil separation tank 9 communicates with the oil collection tank 37 through the eighth oil collection pipe 18, and the fourth oil separation tank 9 communicates with the oil collection tank 37 through the eighth oil collection pipe 18. A water collecting well 27 is arranged in the pool 7 .

The first grease trap 4, the second grease trap 5, the third grease trap 6, the fourth grease trap 7, the fifth grease trap 8 and the sixth grease trap 9 are arranged in two rows and three columns The first grease trap 4, the second grease trap 5 and the third grease trap 6 are in a row, the fourth grease trap 7, the fifth grease trap 8 and the sixth grease trap 9 are in a row. The water port 3 , the first connection port 10 , the second connection port 11 , the third connection port 12 , the fourth connection port 13 and the fifth connection port 14 are distributed in a zigzag shape. The water level at the position where the drainage pipe 28 communicates with the oil collecting well 29 is not lower than the level at which the drain pipe 28 communicates with the clean water pool 25, and the level at which the first oil collecting pipe 30 communicates with the oil collecting well 29 is not high At the level where the first oil collecting pipe 30 communicates with the fourth oil trap 7, the level where the second oil collecting pipe 31 communicates with the oil collecting well 29 is not higher than the second oil collecting pipe 31 and the fifth oil trap The horizontal plane of the 8 connected positions, the horizontal plane of the connected position of the third oil collecting pipe 32 and the oil collecting tank 37 is not higher than the horizontal plane of the connecting position of the third oil collecting pipe 32 and the third oil separation tank 6, the fifth oil collecting pipe 34 and the oil collecting tank The horizontal plane of the communication position of 37 is not higher than the horizontal plane of the communication position of the fifth oil collection pipe 34 and the second oil separation tank 5, and the horizontal plane of the communication position of the sixth oil collection pipe 35 and the oil collection tank 37 is not higher than the sixth oil collection pipe 35 and the horizontal plane of the communication position of the oil collection tank 37. The horizontal plane of the communicating position of the first oil trap 4 and the communicating position of the eighth oil collecting pipe 18 and the oil collecting tank 37 are not higher than the horizontal plane of the communicating position of the eighth oil collecting pipe 18 and the sixth oil trap 9 . The oil separator 16 is arranged in the sixth oil separator 9 through the oil separator support 15, the height of the oil separator 16 is 1/2 of the height of the sixth oil separator 9, and the top of the oil separator 16 On the same level as the top of the sixth grease trap 9. The oil collection grooves 37 are arranged on one side of the first oil trap 4, the second grease trap 5 and the third grease trap 6, and are distributed in a right-angle shape. The mesh carbon block filter frame 24 is set in the filter tank 22 through the filter frame groove 23 .

The specific treatment method of the utility model is as follows: the oily waste water is introduced through the water diversion ditch 1, and under the partition action of the water diversion ditch ram 2, enters the first grease trap 4 through the water inlet 3. Due to the different specific gravity of oil and water, the waste oil is The upper layer, the water in the lower layer, the oily wastewater to be treated and purified entering the first grease trap 4 flows slowly in the first grease trap 4, and is connected by the first grease trap 4 and the second grease trap 5 The first connection port 10 at the bottom of the part enters the second grease trap 5 for further purification treatment. According to the above steps, the oily wastewater to be treated enters the third grease trap 6, the fourth grease trap 7, and the fifth grease trap in sequence. Tank 8 and the sixth grease trap 9 are processed sequentially. When the waste oil accumulates to a certain thickness, the shutter of the drain port 26 is partially closed, so that the water level in each grease trap rises to the first oil collecting pipe 30 and the second collecting pipe. Oil pipe 31, the third oil collecting pipe 32, the fifth oil collecting pipe 34, the sixth oil collecting pipe 35 and the eighth oil collecting pipe 18, the first oil trap 4, the second oil trap 5, the third oil trap The waste oil on the upper layer of the oil pool 6, the fourth grease trap 7, the fifth grease trap 8 and the sixth grease trap 9 is collected in the oil collection well 29; the treated oily wastewater entering the sixth grease trap 9 Then enter into the turning pool 19 through the bottom of the oil separator 16, and the remaining waste oil is isolated in the sixth oil trap 9 on the outside of the turning pool 19 through the oil separator 16, and this part of waste oil passes through the eighth oil collecting pipe 18 Collected in the oil collection well 29, the clear water obtained in the turning pool 19 enters the balance pool 20 through the sixth connection port 21 provided at the bottom of the turning pool 19, and then flows into the filter tank 22, in which a mesh carbon block is arranged. The filter frame 24 uses carbon blocks to further adsorb and treat the purified water to achieve the purpose of further purification and obtain clean water that meets the requirements of the national sewage discharge standard. The final clean water flows into the clear water pool 25 and is discharged through the drain port 26 , the water finally discharged reaches the sewage treatment discharge standard; a water collection well 27 is arranged in the fourth grease trap 7, and when the bottom of the grease trap is cleaned after a certain period of time in the grease trap, the suction valve of the water pump is placed; the drain pipe 28 The end is provided with an inverted funnel-shaped water suction port 17 at the bottom of the oil collection well 29. When the waste oil collected in the oil collection well 29 contains more waste water, it will flow from the bottom of the drain pipe 28 under the pressure of the waste oil at the top of the oil collection well 29. The bell mouth of the tank is discharged, and enters the clear water pool 25, and is discharged with the clear water in the clear water pool 25; a temporary sewage discharge gate 38 is arranged between the balance pool 20 and the water diversion ditch 1, and after the whole system has been in operation for a period of time, the bottom of the pool is cleaned. When polluting, open temporary blowdown ram 38 and water diversion ditch ram 2, only rely on filter tank 22 to filter and purify oily waste water water body.

The utility model has the advantages of small investment, low cost, strong sewage purification energy, obvious purification effect and good social and economic benefits.

Claims (6)

1. An oily wastewater treatment system, comprising a water diversion ditch (1) and a water diversion ditch gate (2) arranged at the end of the water diversion ditch (1), characterized in that: the water diversion ditch (1) passes through a gate The water inlet (3) of the plate communicates with the first grease trap (4), and the bottom of the first grease trap (4) communicates with the bottom of the second grease trap (5) through the first connection port (10) , the bottom of the second grease trap (5) communicates with the bottom of the third grease trap (6) through the second connection port (11), and the bottom of the third grease trap (6) passes through the third connection port (12 ) communicates with the bottom of the fourth grease trap (7), and the bottom of the fourth grease trap (7) communicates with the bottom of the fifth grease trap (8) through the fourth connection port (13). The bottom of the oil pool (8) communicates with the bottom of the sixth grease trap (9) through the fifth connection port (14), and a turning pool (19) is arranged in the sixth grease trap (9), and the turning pool ( 19) An oil separator (16) is provided on the outside, and the bottom of the turning pool (19) is connected to the bottom of the balance pool (20) through the sixth connection port (21). There is a temporary sewage discharge ram (38) between them, the balance pool (20) is connected with the filter tank (22), and the filter tank (22) is provided with a mesh carbon block filter frame (24), and the filter tank (22) is connected to the clean water The pool (25) is connected, and the clear water pool (25) is connected with the outside world by the drain outlet (26) that is provided with a drain gate, and a drainpipe (28) is arranged on the top of the clear water pool (25), and the drainpipe (28) The other end communicates with the oil collection well (29) arranged on one side of the third grease trap (6) and the fourth grease trap (7), and the end of the drain pipe (28) is set at the lower part of the oil trap (29) There is an inverted funnel-shaped water suction port (17), the oil collection well (29) is connected with the oil collection tank (37), and the upper part of the fourth oil separation tank (7) is connected with the oil collection well (29) through the first oil collection pipe (30) The fifth oil separation tank (8) is connected to the oil collection well (29) through the second oil collection pipe (31), and the third oil separation tank (6) is connected to the oil collection tank (37) through the third oil collection pipe (32) The second oil trap (5) is connected to the oil sump (37) through the fifth oil collecting pipe (34), and the first oil trap (4) is connected to the oil sump (37) through the sixth oil collecting pipe (35) The sixth oil separation tank (9) communicates with the oil collection tank (37) through the eighth oil collection pipe (18), and a water collection well (27) is arranged in the fourth oil separation tank (7). 2. The oily wastewater treatment system according to claim 1, characterized in that: the first grease trap (4), the second grease trap (5), the third grease trap (6), the fourth The grease trap (7), the fifth grease trap (8) and the sixth grease trap (9) are arranged side by side in two rows and three columns, the first grease trap (4), the second grease trap (5) The third grease trap (6) is in a row, the fourth grease trap (7), the fifth grease trap (8) and the sixth grease trap (9) are in a row, the water inlet (3), the first connection The port (10), the second connection port (11), the third connection port (12), the fourth connection port (13) and the fifth connection port (14) are distributed in zigzag. 3. The oily wastewater treatment system according to claim 1, characterized in that: the water level at the position where the drainage pipe (28) communicates with the oil collection well (29) is not lower than that of the drainage pipe (28) and the clean water pool (25) ), the level of the communication position between the first oil collection pipe (30) and the oil collection well (29) is not higher than the connection position between the first oil collection pipe (30) and the fourth oil separation tank (7) The horizontal plane of the second oil collecting pipe (31) and the oil collecting well (29) is not higher than the horizontal plane of the second oil collecting pipe (31) and the fifth oil separation tank (8). The horizontal plane where the third oil collecting pipe (32) communicates with the oil collecting tank (37) is not higher than the horizontal plane where the third oil collecting pipe (32) communicates with the third oil separation tank (6), and the fifth oil collecting pipe (34) and The level of the connecting position of the oil collecting tank (37) is not higher than the level of the connecting position of the fifth oil collecting pipe (34) and the second oil separation tank (5), and the sixth oil collecting pipe (35) is connected with the oil collecting tank (37) The horizontal plane of the position is not higher than the horizontal plane of the position where the sixth oil collecting pipe (35) communicates with the first oil trap (4), and the horizontal plane of the position where the eighth oil collecting pipe (18) communicates with the oil collecting tank (37) is not higher than that of the The horizontal plane of the position where the eight oil collecting pipes (18) communicate with the sixth grease trap (9). 4. The oily wastewater treatment system according to claim 1, characterized in that: the oil separator (16) is set in the sixth grease separator (9) through the oil separator support (15), and the oil separator The height of plate (16) is 1/2nd of the height of the sixth grease trap (9), and the top of grease trap (16) is on the same level as the top of the sixth grease trap (9). 5. The oily wastewater treatment system according to claim 1, characterized in that: the oil collection tank (37) is set in the first grease trap (4), the second grease trap (5) and the third grease trap One side of the pool (6), and distributed at right angles. 6. The oily wastewater treatment system according to claim 1, characterized in that: the grid-shaped carbon block filter frame (24) is set in the filter tank (22) through the filter frame groove (23).

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