CN112897682A - Biological contact sewage treatment system and sewage treatment method thereof - Google Patents
Biological contact sewage treatment system and sewage treatment method thereof Download PDFInfo
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- CN112897682A CN112897682A CN202110092954.XA CN202110092954A CN112897682A CN 112897682 A CN112897682 A CN 112897682A CN 202110092954 A CN202110092954 A CN 202110092954A CN 112897682 A CN112897682 A CN 112897682A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a biological contact sewage treatment system and a sewage treatment method thereof, wherein the biological contact sewage treatment system comprises an anaerobic digestion chamber and an aerobic digestion chamber, the aerobic digestion chamber is in a vertical cylindrical shape, and the anaerobic digestion chamber is arranged in the aerobic digestion chamber; the water outlet end of the anaerobic digestion cavity is higher than the water surface in the aerobic digestion chamber; a pressurizing liquid inlet structure is arranged at the bottom of the anaerobic digestion cavity; the pressure boost inlet structure pushes sewage to enter the anaerobic digestion chamber, and the sewage in the anaerobic digestion chamber is sprayed in the aerobic digestion chamber from the top water outlet end. The invention provides a biological contact sewage treatment system and a sewage treatment method thereof, which can effectively utilize the effect of microbial digestion on organic matters in sewage.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to the field of sewage treatment by biological digestion.
Background
Decomposing organic matters in a dissolved or colloidal state in the sewage into stable inorganic substances by utilizing the metabolism function of microorganisms, thereby purifying the sewage; the biological contact mode can well digest the organic matters in the sewage and can effectively decompose the organic matters such as nitrogen, phosphorus and the like in the sewage; the biological treatment can be anaerobic digestion treatment and aerobic digestion treatment respectively.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a biological contact sewage treatment system and a sewage treatment method thereof, which can effectively utilize the effect of microbial digestion on organic matters in sewage.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the invention is as follows:
a biological contact sewage treatment system comprises an anaerobic digestion chamber and an aerobic digestion chamber, wherein the aerobic digestion chamber is in a vertical cylindrical shape, and the anaerobic digestion chamber is arranged in the aerobic digestion chamber; the water outlet end of the anaerobic digestion cavity is higher than the water surface in the aerobic digestion chamber; a pressurizing liquid inlet structure is arranged at the bottom of the anaerobic digestion cavity; the pressurizing liquid inlet structure pushes sewage into the anaerobic digestion chamber, and the sewage in the anaerobic digestion chamber is sprayed into the aerobic digestion chamber from the water outlet end at the top end; the organic matters in the water can be better treated by anaerobic digestion treatment and then aerobic digestion treatment.
Furthermore, the middle part of the aerobic digestion chamber is an expansion cavity, and the bottom of the aerobic digestion chamber is provided with a fixed platform; the anaerobic digestion cavity is fixedly arranged on the fixed table, and a separation sheet is arranged between the bottom of the expansion cavity and the side wall of the anaerobic digestion cavity at intervals; a water inlet cavity is formed between the separation sheet and the fixed platform; a water inlet pipe is communicated with the side wall of the water inlet cavity; the water inlet cavity is communicated with the expansion cavity through the anaerobic digestion cavity; a water outlet pipe is arranged on the expansion cavity; sewage flows from bottom to top and then from top to bottom; time is left for anaerobic digestion treatment.
Furthermore, the bottom of the anaerobic digestion cavity is embedded into the fixed table, and the water inlet cavity is arranged around the anaerobic digestion chamber; a pressurizing chamber is arranged in the space between the fixed platform and the bottom surface of the aerobic digestion chamber; the fixed table is provided with a communicating hole; the water inlet cavity is communicated with the pressurizing cavity through a communicating hole; the pressurizing liquid inlet structure is arranged in the pressurizing chamber; a connecting groove is arranged in one side of the fixed table, which is far away from the communicating hole, and the connecting groove is in an L-shaped structure; the pressurizing cavity is communicated with the bottom of the anaerobic digestion cavity through the communicating groove; the pressurizing liquid inlet structure extrudes sewage in the pressurizing cavity to enter the anaerobic digestion cavity through the communicating groove; the pressurizing liquid inlet structure rotates to intermittently extrude pressurizing liquid inlet and continuously feeds liquid into the anaerobic digestion cavity.
Further, the pressurizing liquid inlet structure comprises a rotating table supporting rotating shaft; the rotating table is correspondingly arranged in the pressurizing cavity, and the top of the pressurizing table is periodically sealed in the communicating hole and the connecting groove respectively; the rotating device at the bottom of the pressurizing cavity is in driving connection with one end of the supporting rotating shaft; the other end of the supporting rotating shaft is supported on the rotating table, and the supporting rotating shaft drives the rotating table to rotate circumferentially in the pressurizing cavity; a water receiving groove is formed in the rotating platform; the water receiving tank moves through the communication hole and the communicating tank, and the water receiving tank is periodically communicated with the communication hole and the communicating tank respectively; transporting the sewage.
The pressurizing liquid inlet structure also comprises an extruding block structure; the extrusion block structure is arranged in the fixed table; an extrusion block structure is arranged on one side of the connecting through groove corresponding to the rotating direction of the rotating platform; when the rotating table drives the water receiving tank to move to the position of the connecting tank, the extrusion block structure extends into the water receiving tank, and pushes sewage to enter the anaerobic digestion chamber through the connecting tank; and liquid feeding is realized.
Further, the water receiving groove is arc-shaped, and when the water receiving groove is correspondingly communicated with the communication hole, one side of the rotating platform, which is far away from the water receiving groove, is sealed in the communication groove; when the water receiving tank is correspondingly communicated with the communicating tank, one side of the rotating platform, which is far away from the water receiving tank, is sealed in the communicating hole; the bottom surfaces of the two ends of the water receiving tank are gradually increased, and the surfaces of the two ends of the water receiving tank are flush with the surface of the rotating table; the bottom surface of the water receiving tank is arc-shaped, and a water guide groove is dug in the middle of the bottom surface of the water receiving tank; the section of the water chute is semicircular; the bottom surface of the water receiving tank is of a magnetic structure; providing compactness.
Furthermore, the extrusion block structure comprises an extrusion plate and a telescopic column; the bottom of the fixed table is provided with a containing hole, and the connecting groove is provided with a containing hole along one side of the rotating direction of the rotating table; a pushing plate is arranged in the containing hole; the telescopic device in the accommodating hole is in driving connection with one end of the telescopic column; the other end of the telescopic column drives the pushing plate to enter and exit the containing hole; the telescopic column drives the pushing plate to abut against the bottom surface of the water receiving tank, and the water receiving tank and the pushing plate slide relatively; a gap is formed on the partition wall between the connecting groove and the accommodating hole; is convenient for extruding the sewage to circulate.
An arc-shaped lug is arranged at one end of the pushing plate, which is far away from the telescopic column; the telescopic column pushes the pushing plate to be correspondingly embedded into the water receiving groove, and the arc-shaped convex block is correspondingly embedded into the water guide groove; the middle part of the arc-shaped lug is provided with a hollow groove; the extending track of the empty groove is adapted to the track of the embedded end of the pushing plate; the side wall of the empty groove is of an elastic magnetic structure; a notch is formed in the side wall of the hollow groove along the rotation direction of the rotating table; the notch of the notch is gradually increased; the contact tightness of the arc-shaped convex block and the water chute is improved.
Further, the anaerobic digestion cavity is gradually reduced from the middle part to the two ends; the middle part of the anaerobic digestion cavity corresponds to the expansion cavity; a plurality of placing plates are horizontally arranged in the middle of the anaerobic digestion chamber at intervals; a plurality of through holes are formed in the placing disc in a penetrating manner; a plurality of anaerobic microorganisms are distributed on the surface of the placing plate; anaerobic digestion treatment is carried out.
The top of the anaerobic digestion cavity is a necking end; a stirring structure is arranged in the neck reducing end; the stirring structure comprises a stirring paddle and a fixed rod; the cross arm of the fixed rod is fixed in the neck-reducing end, and the rotating device in the middle of the fixed rod is in driving connection with the stirring paddle; an adjusting ring structure is sleeved on the side wall of the neck end; the sewage in the necking end is spread outwards and is distributed in the adjusting ring structure; slowly releases the sewage into the aerobic digestion chamber.
Further, the adjusting ring structure corresponds to the top of the aerobic digestion chamber; the adjusting ring structure comprises a ring-shaped pipe structure and a swinging structure; the annular pipe structure is fixedly sleeved on the necking end; the outlet end of the necking end is arranged in an outward expanding mode, and the top surface of the annular tube structure is flush with the expansion port of the necking end; so that the sewage can flow into the annular pipe structure conveniently.
The annular tube structure comprises a rotating sheet; a plurality of rotating sheets are vertically spliced into an annular pipe structure; a swinging structure is arranged on the inner wall of the corresponding rotating sheet in the annular tube structure; the swing structure is fixed on the side wall of the neck end through a connecting rod arranged in the circumferential direction; the swing structure is in driving connection with the inner wall of the middle part of the rotating sheet; the plurality of rotating sheets rotate, the side wall of the annular tube structure is of a stepped structure, and the plurality of rotating sheets are spaced; a plurality of water leakage holes are formed in the side wall of the rotating sheet at the top of the annular tube structure; the aerobic digestion chamber is communicated with the interior of the annular tube structure through a gap between the water leakage hole and the rotating sheet; the liquid inlet gap is increased.
A bacterium net is clamped between the connecting rods; aerobic microorganisms are arranged on the bacterial screen; a vent pipe is fixedly arranged on the side wall of the inner necking end at the bottom of the annular pipe structure; the air pipe is communicated with the air pump through an air pipe; a plurality of air outlet pipes are arranged on the side wall of the vent pipe; increase the oxygen content in water and improve the aerobic digestion efficiency.
Further, the first step: sewage enters the expansion cavity through the water inlet pipe; the sewage in the expansion cavity flows into the pressurization cavity through the communication hole; the pressurizing liquid inlet structure conveys and pushes the sewage into an anaerobic digestion cavity for anaerobic digestion treatment;
the second step is that: the water receiving tank on the rotating table is used for periodically receiving water and conveying, the pushing plate pushes the sewage into the anaerobic digestion cavity through the communicating tank, and the sewage is digested and treated by anaerobic microorganisms on the placing tray;
the third step: sewage after anaerobic digestion treatment is respectively sprayed into the annular tube structure through the neck end, and the rotating sheet rotates to correspondingly adjust and control the sewage quantity passing through the annular tube structure;
the fourth step: the sewage after being digested by the aerobic microorganisms in the annular pipe structure flows into the expansion cavity and is then pumped out through the water outlet pipe.
Has the advantages that: the invention can decompose the organic matters in the water in the modes of anaerobic digestion treatment and aerobic digestion treatment; including but not limited to the following benefits:
1) introducing the sewage into an anaerobic digestion chamber for anaerobic digestion treatment to decompose organic matters in the sewage preliminarily; then the water is circulated to an aerobic digestion chamber for aerobic digestion treatment, so that more organic matters in the water can be more comprehensively and stably treated;
2) the rotating platform rotates to receive water firstly, and then the water chute and the extrusion block structure are matched with each other to extrude sewage to enter from the bottom of the anaerobic digestion cavity, so that the sewage in the anaerobic digestion chamber can be pushed and diffused into the aerobic digestion chamber, and sufficient time can be provided for anaerobic digestion.
Drawings
FIG. 1 is a schematic view of a sewage treatment system;
FIG. 2 is a schematic view of an aerobic digestion chamber;
FIG. 3 is a schematic view of a plenum chamber;
FIG. 4 is a view of a press block pattern;
FIG. 5 is a view of the structure of the water receiving tank;
FIG. 6 is a view showing the structure of a pushing plate;
FIG. 7 is a view showing the structure of a vacant slot;
FIG. 8 is a view of a placement tray structure;
FIG. 9 is a schematic view of a necking end;
FIG. 10 is a view showing a structure of a rotary piece;
fig. 11 is a view showing the structure of a breather pipe.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figures 1-11: a biological contact sewage treatment system comprises an anaerobic digestion chamber 1 and an aerobic digestion chamber 2, wherein the aerobic digestion chamber 2 is in a vertical cylindrical shape, and the anaerobic digestion chamber 1 is arranged in the aerobic digestion chamber 2; the water outlet end of the anaerobic digestion cavity 1 is higher than the water surface in the aerobic digestion chamber 2; the bottom of the anaerobic digestion cavity 1 is provided with a pressurizing liquid inlet structure 3; the pressurizing liquid inlet structure 3 pushes sewage into the anaerobic digestion chamber 1, and the sewage in the anaerobic digestion chamber 1 is sprayed in the aerobic digestion chamber 2 from the top water outlet end. The pressurizing liquid inlet structure extrudes the sewage to enter from the bottom of the anaerobic digestion cavity, so that in the process of continuously pushing and extruding the liquid inlet, microorganisms in the anaerobic digestion cavity continuously carry out anaerobic digestion treatment on organic matters in the sewage, and the microorganisms can better have more sufficient time to carry out digestion and decomposition by changing the liquid inlet mode; the liquid is squeezed from the anaerobic digestion cavity, the sewage flows out of the aerobic digestion cavity from the top of the anaerobic digestion cavity, and the microorganisms decompose and stabilize organic matters in the sewage again through aerobic digestion, so that the sewage channel can be better purified.
The middle part of the aerobic digestion chamber 2 is provided with an expansion cavity 21, and the bottom of the aerobic digestion chamber 2 is provided with a fixed platform 22; the anaerobic digestion chamber 1 is fixedly arranged on the fixed table 22, and a separation sheet 211 is arranged between the bottom of the expansion chamber 21 and the side wall of the anaerobic digestion chamber 1 at intervals; a water inlet cavity 23 is arranged between the separating sheet 211 and the fixed platform 22; a water inlet pipe 231 is communicated with the side wall of the water inlet cavity 23; the water inlet cavity 231 is communicated with the expansion cavity 21 through the anaerobic digestion cavity 1; a water outlet pipe 24 is arranged on the expansion cavity 21; sewage flows from bottom to top and then from top to bottom. The inlet tube lets in sewage to the intake chamber, and the intake chamber passes through pressure boost inlet structure and extrudees sewage into the anaerobic digestion intracavity, and later the sewage of anaerobic digestion intracavity overflows and passes through the outlet pipe outflow through the inflation chamber after the digestion treatment in the aerobic digestion chamber.
The bottom of the anaerobic digestion chamber 1 is embedded into the fixed table 22, and the water inlet chamber 231 is arranged around the anaerobic digestion chamber 1; the space between the fixed platform 22 and the bottom surface of the aerobic digestion chamber 2 is a pressurizing chamber 25; the fixed table 22 is provided with a communicating hole 221; the water inlet cavity 231 is communicated with the pressurizing cavity 25 through the communication hole 221; the pressurizing liquid inlet structure 3 is arranged in the pressurizing chamber 25; a connecting groove 222 is arranged in one side of the fixed table 22 far away from the communication hole 221, and the connecting groove 222 is in an L-shaped structure; the pressurizing cavity 25 is communicated with the bottom of the anaerobic digestion cavity 1 through a connecting groove 222; the pressurizing liquid inlet structure 3 extrudes the sewage in the pressurizing cavity 25 to enter the anaerobic digestion cavity 1 through the connecting groove 222; the pressurizing liquid inlet structure 3 rotates to intermittently extrude pressurizing liquid inlet. The pressurizing liquid inlet structure rotates to the position of the communicating hole, and sewage in the water inlet cavity flows into the pressurizing liquid inlet structure through the communicating hole; the pressurizing liquid inlet structure rotates to extrude sewage to enter the anaerobic digestion cavity through the communicating groove for anaerobic digestion treatment; the anaerobic digestion chamber is fed with liquid continuously and discontinuously, so that the liquid is fed from the bottom, and the liquid is overflowed from the top, so that the sewage is subjected to anaerobic digestion treatment in a bottom-up alternative mode, the digestion and the decomposition can be carried out more comprehensively, and the purification effect is improved.
The pressurizing liquid inlet structure 3 comprises a rotating table 31 and a supporting rotating shaft 32; the rotating table 31 is correspondingly arranged in the pressurizing cavity 25, and the top of the pressurizing table 31 is respectively sealed in the communicating hole 221 and the communicating groove 222 periodically; the rotating device at the bottom of the pressurizing cavity 25 is in driving connection with one end of the supporting rotating shaft 32; the other end of the supporting rotating shaft 32 is supported on the rotating table 31, and the supporting rotating shaft 32 drives the rotating table 31 to rotate in the circumferential direction in the pressurizing cavity 25; the rotating table 31 is provided with a water receiving groove 311; the water receiving tank 311 moves through the communication hole 221 and the connection tank 222, and the water receiving tank 311 is periodically connected to the communication hole 221 and the connection tank 222; the rotating platform drives the water receiving tank pivoted in-process, and the water receiving tank transports the intercommunicating pore position, and the sewage of feed liquor intracavity flows into the water receiving tank in, lasts the rotation, and the water receiving tank moves the switch-on trench position to extrusion piece structure cooperation water receiving tank extrusion sewage enters into the anaerobic digestion intracavity through the switch-on trench, just so can effectual transport sewage to the anaerobic digestion intracavity stabilize purification treatment.
The pressurizing liquid inlet structure 3 further comprises an extruding block structure 33; the extrusion block structure 33 is arranged in the fixed table 22; the connecting groove 222 is provided with an extruding block structure 33 corresponding to one side of the rotating direction of the rotating table 31; when the rotating table 31 drives the water receiving tank 311 to move to the position of the connecting tank 222, the extruding block structure 33 extends into the water receiving tank 311, and the extruding block structure 33 extrudes the sewage to enter the anaerobic digestion chamber 1 through the connecting tank 222. The extrusion block structure is correspondingly embedded into the water receiving tank, and then in the process of movement of the water receiving tank, the extrusion block structure pushes the sewage to enter the anaerobic digestion cavity through the connecting tank, so that the liquid inlet is completed.
The water receiving tank 311 is arc-shaped, and when the water receiving tank 311 is correspondingly communicated with the communication hole 221, one side of the rotating platform 31, which is far away from the water receiving tank 311, is sealed in the communication tank 222; when the water receiving tank 311 is correspondingly communicated with the communication tank 222, one side of the rotating platform 31, which is far away from the water receiving tank 311, is sealed in the communication hole 221; the bottom surfaces of the two ends of the water receiving tank 311 are gradually increased, and the surfaces of the two ends of the water receiving tank 311 are flush with the surface of the rotating table 31; the bottom surface of the water receiving tank 311 is arc-shaped, and a water guide tank 312 is dug in the middle of the bottom surface of the water receiving tank 311; the cross section of the water chute 312 is semicircular; the bottom surface of the water receiving tank 311 is of a magnetic structure. When the water receiving tank moves to the communicating hole and is communicated with the liquid inlet cavity, the top surface of the rotating platform is sealed in the communicating hole, when the water receiving tank moves to the communicating hole and is communicated with the anaerobic digestion cavity, the top surface of the rotating platform is sealed in the communicating hole, liquid can be continuously fed in such a way, enough digestion time is reserved for anaerobic digestion, and liquid can be fed in from the bottom to push and overflow sewage after anaerobic digestion in the anaerobic digestion cavity into the aerobic digestion chamber, so that a replacement liquid feeding and discharging mode is carried out, sewage can be effectively and better treated, and the purification effect is improved.
The extrusion block structure 33 comprises an extrusion plate 331 and a telescopic column 332; the bottom of the fixed table 22 is provided with a containing hole 223, and one side of the through groove 222 along the rotation direction of the rotating table 31 is provided with the containing hole 223; a pushing plate 331 is arranged in the accommodating hole 223; the telescopic device in the accommodating hole 223 is in driving connection with one end of the telescopic column 332; the other end of the telescopic column 332 drives the pushing plate 331 to move in and out of the accommodating hole 223; the telescopic column 332 drives the pushing plate 331 to abut against the bottom surface of the water receiving tank 311, and the water receiving tank 311 and the pushing plate 331 slide relatively; a gap 224 is arranged on the partition wall between the connecting groove 222 and the accommodating hole 223; when one end of the water receiving tank moves to the position of the connecting tank, the telescopic column pushes the pushing plate to be correspondingly embedded into the water receiving tank, so that the water receiving tank continuously rotates, the pushing plate and the water receiving tank relatively reversely slide, the space in the reverse direction of the rotation direction of the water receiving tank is gradually reduced, and the pushing plate pushes sewage into the connecting tank to circulate into the anaerobic digestion chamber.
An arc-shaped projection 333 is arranged at one end of the pushing plate 331 far away from the telescopic column 332; the telescopic column 332 pushes the pushing plate 331 to be correspondingly embedded into the water receiving tank 311, and the arc-shaped projection 333 is correspondingly embedded into the water guiding tank 312; the middle part of the arc-shaped lug 333 is provided with a hollow groove 334; the extending track of the empty groove 334 is adapted to the track of the embedded end of the pushing plate 331; the side wall of the empty groove 334 is of an elastic magnetic structure; a notch 335 is formed on the side wall of the hollow groove 334 along the rotation direction of the rotating table 31; the notches of the notches 335 progressively increase. When the pushing plate is in the accommodating hole, air exists in the empty groove, the telescopic column pushes the pushing plate to be embedded into the water receiving groove, the arc-shaped convex block is correspondingly embedded into the water guide groove, in the process of extruding the water guide groove by the arc-shaped convex block, a part of air is extruded, a vacuum environment is formed in the empty groove, and therefore the arc-shaped convex block can be attached to the water guide groove more tightly, water leakage can be avoided in the process of pushing sewage, the resistance of the sewage to the opening of the empty groove can be reduced by the slot shortage, the tightness is increased, the sewage is prevented from entering the empty groove, and the pushing of the sewage is facilitated.
The anaerobic digestion cavity 1 gradually decreases from the middle part to the two ends; the middle part of the anaerobic digestion cavity 1 corresponds to the expansion cavity 21; a plurality of placing plates 11 are horizontally arranged in the middle of the anaerobic digestion cavity 1 at intervals; a plurality of through holes 111 are formed in the placing disc 11 in a penetrating manner; a plurality of anaerobic microorganisms are distributed on the surface of the placing plate 11; the top of the anaerobic digestion cavity 1 is a necking end 12; a stirring structure 13 is arranged in the neck-reducing end 12; the agitating structure 13 includes a paddle 131 and a fixing lever 132; the cross arm of the fixing rod 132 is fixed in the neck end 12, and the rotating device in the middle of the fixing rod 132 is in driving connection with the stirring paddle 131; the adjusting ring structure 4 is sleeved on the side wall of the necking end 12; the sewage in the neck end 12 is spread outwards and is sprinkled in the adjusting ring structure 4. Sewage enters from the bottom of the anaerobic digestion cavity, passes through the placing plate and contacts with microorganisms on the placing plate, and organic matters in the sewage are treated by anaerobic digestion. Then sewage overflows into the aerobic digestion chamber from the necking end, and the stirring paddle stirs the sewage, so that the sewage can uniformly overflow from the necking end and flow through the regulating ring structure, and aerobic digestion treatment is performed.
The adjusting ring structure 4 corresponds to the top of the aerobic digestion chamber 2; the adjusting ring structure 4 comprises an annular tube structure 41 and a swinging structure 42; the ring-shaped pipe structure 41 is fixedly sleeved on the neck-reducing end 12; the outlet end of the necking end 12 is arranged in an outward expanding mode, and the top surface of the annular tube structure 41 is flush with the expanded opening of the necking end 12; when sewage overflows, the water leakage hole of the rotating sheet at the top leaks into the annular tube structure, so that part of water passes through the water leakage hole, and the other part of water slides down along the surface of the annular tube structure and contacts with microorganisms on the surface of the annular tube structure.
The ring-shaped tube structure 41 includes a rotating piece 411; a plurality of the rotating pieces 411 are vertically spliced into an annular pipe structure 41; a swing structure 42 is arranged on the inner wall of the annular tube structure 41 corresponding to the rotating sheet 411; the swing structure 42 is fixed on the side wall of the neck end 12 through a connecting rod 421 arranged in a circumferential direction; the swing structure 42 is in driving connection with the inner wall of the middle part of the rotating sheet 411; the rotating pieces 411 rotate, the side wall of the annular tube structure 41 is of a step-shaped structure, and the rotating pieces 411 are spaced; a plurality of water leakage holes 412 are formed in the side wall of the rotating sheet 411 at the top of the annular tube structure 41; the aerobic digestion chamber 2 is communicated with the interior of the annular tube structure 41 through a gap between the water leakage hole 412 and the rotating sheet 411; the swinging structure drives the rotating sheets to rotate, so that gaps between the rotating sheets can be correspondingly increased or decreased, when the gaps between the rotating sheets are adjusted to be increased, a large amount of overflowing sewage leaks into the annular pipe structure from the gaps between the rotating sheets and is in contact with microorganisms on the bacterial screen, so that more sewage can flow onto the bacterial screen by adjusting the gaps between the rotating sheets, and aerobic digestion treatment can be better carried out; the microorganisms are reasonably utilized.
A bacterium net 422 is clamped between the connecting rods 421; aerobic microorganisms are arranged on the bacterial net 422; a vent pipe 43 is fixedly arranged on the side wall of the inner necking end 12 at the bottom of the annular pipe structure 41; the air pipe 43 is communicated with the air pump through an air pipe; a plurality of air outlet pipes 431 are arranged on the side wall of the air pipe 43. The outlet duct releases oxygen to the interior of the annular tube structure, so that microorganisms on the bacterial net can be better digested, and the purification effect is improved.
The first step is as follows: sewage enters the expansion chamber 21 through the water inlet pipe 231; the sewage in the expansion chamber 21 flows into the pressurizing chamber 25 through the communication hole 221; the pressurizing liquid inlet structure 3 conveys and pushes the sewage into the anaerobic digestion cavity 1 for anaerobic digestion treatment; therefore, the purification effect can be effectively improved by carrying out digestion treatment on the sewage through oxygen-free and aerobic treatment.
The second step is that: the water receiving tank 311 on the rotating table 31 is used for periodically receiving water for conveying, the pushing plate 331 pushes the sewage into the anaerobic digestion chamber 1 through the connecting tank 222, and the sewage is digested by anaerobic microorganisms on the placing tray 11; therefore, the sewage can be more fully contacted with the microorganisms by the replacement type liquid inlet mode, and the purification effect is improved.
The third step: the sewage after anaerobic digestion treatment is distributed into the annular pipe structure 41 through the neck end 12, and the rotating sheet 411 rotates to correspondingly adjust and control the sewage quantity passing through the annular pipe structure 41; the gap between the rotating pieces is correspondingly adjusted according to the amount of overflowing sewage, so that microorganisms and oxygen can be more reasonably utilized, and excessive consumption and waste are avoided.
The fourth step: sewage subjected to aerobic microbial digestion treatment in the annular pipe structure 41 flows into the expansion cavity 21 and is then pumped out through the water outlet pipe 24; the sewage can be better purified by anaerobic and aerobic comprehensive digestion treatment.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a biological contact sewage treatment system which characterized in that: the anaerobic digestion device comprises an anaerobic digestion cavity (1) and an aerobic digestion chamber (2), wherein the aerobic digestion chamber (2) is in a vertical cylindrical shape, and the anaerobic digestion cavity (1) is arranged in the aerobic digestion chamber (2); the water outlet end of the anaerobic digestion cavity (1) is higher than the water surface in the aerobic digestion chamber (2); the bottom of the anaerobic digestion cavity (1) is provided with a pressurizing liquid inlet structure (3); the pressurizing liquid inlet structure (3) pushes sewage into the anaerobic digestion chamber (1), and the sewage in the anaerobic digestion chamber (1) is sprayed in the aerobic digestion chamber (2) from the top water outlet end.
2. The biological contact wastewater treatment system of claim 1, wherein: the middle part of the aerobic digestion chamber (2) is provided with an expansion cavity (21), and the bottom of the aerobic digestion chamber (2) is provided with a fixed platform (22); the anaerobic digestion chamber (1) is fixedly arranged on the fixed table (22), and a separation sheet (211) is arranged between the bottom of the expansion chamber (21) and the side wall of the anaerobic digestion chamber (1) at an interval; a water inlet cavity (23) is arranged between the separating sheet (211) and the fixed platform (22); a water inlet pipe (231) is communicated with the side wall of the water inlet cavity (23); the water inlet cavity (23) is communicated with the expansion cavity (21) through the anaerobic digestion cavity (1); a water outlet pipe (24) is arranged on the expansion cavity (21); sewage flows from bottom to top and then from top to bottom.
3. The biological contact wastewater treatment system of claim 2, wherein: the bottom of the anaerobic digestion chamber (1) is embedded into the fixed table (22), and the water inlet chamber (231) is arranged around the anaerobic digestion chamber (1); a pressurizing chamber (25) is arranged in the space between the fixed platform (22) and the bottom surface of the aerobic digestion chamber (2); a communicating hole (221) is formed in the fixed table (22); the water inlet cavity (231) is communicated with the pressurizing cavity (25) through a communication hole (221); the pressurizing liquid inlet structure (3) is arranged in a pressurizing chamber (25); a connecting groove (222) is formed in one side, far away from the communication hole (221), of the fixed table (22), and the connecting groove (222) is of an L-shaped structure; the pressurizing cavity (25) is communicated with the bottom of the anaerobic digestion cavity (1) through a connecting groove (222); the pressurizing liquid inlet structure (3) extrudes sewage in the pressurizing cavity (25) and enters the anaerobic digestion cavity (1) through the connecting groove (222); the pressurizing liquid inlet structure (3) rotates to intermittently extrude pressurizing liquid inlet.
4. The biological contact wastewater treatment system of claim 1, wherein: the pressurizing liquid inlet structure (3) comprises a rotating table (31) and a supporting rotating shaft (32); the rotating table (31) is correspondingly arranged in the pressurizing cavity (25), and the top of the rotating table (31) is respectively sealed in the communicating hole (221) and the communicating groove (222) periodically; the rotating device at the bottom of the pressurizing cavity (25) is in driving connection with one end of the supporting rotating shaft (32); the other end of the supporting rotating shaft (32) is supported on the rotating table (31), and the supporting rotating shaft (32) drives the rotating table (31) to rotate in the circumferential direction in the pressurizing cavity (25); a water receiving groove (311) is formed in the rotating table (31); the water receiving tank (311) moves through the communication hole (221) and the connection tank (222), and the water receiving tank (311) is periodically connected with the communication hole (221) and the connection tank (222) respectively;
the pressurizing liquid inlet structure (3) further comprises an extruding block structure (33); the extrusion block structure (33) is arranged in the fixed table (22); the connecting groove (222) is provided with an extruding block structure (33) corresponding to one side of the rotating direction of the rotating table (31); when the rotating table (31) drives the water receiving tank (311) to move to the position of the connecting groove (222), the extruding block structure (33) extends into the water receiving tank (311), and the extruding block structure (33) pushes the sewage to enter the anaerobic digestion chamber (1) through the connecting groove (222).
5. The biological contact wastewater treatment system of claim 4, wherein: the water receiving groove (311) is arc-shaped, and when the water receiving groove (311) is correspondingly communicated with the communication hole (221), one side of the rotating platform (31) far away from the water receiving groove (311) is sealed in the communication groove (222); when the water receiving groove (311) is correspondingly communicated with the communicating groove (222), one side of the rotating platform (31) far away from the water receiving groove (311) is sealed in the communicating hole (221); the bottom surfaces of two ends of the water receiving tank (311) are gradually increased, and the surfaces of two ends of the water receiving tank (311) are flush with the surface of the rotating table (31); the bottom surface of the water receiving tank (311) is arc-shaped, and a water guide groove (312) is dug in the middle of the bottom surface of the water receiving tank (311); the section of the water chute (312) is semicircular; the bottom surface of the water receiving tank (311) is of a magnetic structure.
6. The biological contact wastewater treatment system of claim 4, wherein: the extrusion block structure (33) comprises an extrusion plate (331) and a telescopic column (332); the bottom of the fixed table (22) is provided with a containing hole (223), and the through groove (222) is provided with the containing hole (223) along one side of the rotating direction of the rotating table (31); a pushing plate (331) is arranged in the accommodating hole (223); the telescopic device in the containing hole (223) is in driving connection with one end of the telescopic column (332); the other end of the telescopic column (332) drives the pushing plate (331) to move in and out of the accommodating hole (223); the telescopic column (332) drives the pushing plate (331) to abut against the bottom surface of the water receiving tank (311), and the water receiving tank (311) and the pushing plate (331) slide relatively; a gap (224) is arranged on a partition wall between the through groove (222) and the containing hole (223);
an arc-shaped convex block (333) is arranged at one end of the pushing plate (331) far away from the telescopic column (332); the telescopic column (332) pushes the pushing plate (331) to be correspondingly embedded into the water receiving groove (311), and the arc-shaped convex block (333) is correspondingly embedded into the water guide groove (312); the middle part of the arc-shaped convex block (333) is provided with an empty groove (334); the extending track of the empty groove (334) is adapted to the track of the embedded end of the pushing plate (331); the side wall of the empty groove (334) is of an elastic magnetic structure; a notch (335) is formed in the side wall of the empty groove (334) along the rotation direction of the rotating table (31); the notches (335) increase progressively.
7. The biological contact wastewater treatment system of claim 1, wherein: the anaerobic digestion cavity (1) is gradually reduced from the middle part to the two ends; the middle part of the anaerobic digestion cavity (1) corresponds to an expansion cavity (21); a plurality of placing plates (11) are horizontally arranged in the middle of the anaerobic digestion cavity (1) at intervals; a plurality of through holes (111) are formed in the placing disc (11) in a penetrating manner; a plurality of anaerobic microorganisms are distributed on the surface of the placing plate (11);
the top of the anaerobic digestion cavity (1) is a necking end (12); a stirring structure (13) is arranged in the neck-reducing end (12); the stirring structure (13) comprises a stirring paddle (131) and a fixed rod (132); the cross arm of the fixing rod (132) is fixed in the neck-reducing end (12), and a rotating device in the middle of the fixing rod (132) is in driving connection with the stirring paddle (131); the side wall of the neck reducing end (12) is sleeved with an adjusting ring structure (4); the sewage in the neck end (12) is spread outwards and distributed in the adjusting ring structure (4).
8. The biological contact wastewater treatment system of claim 7, wherein: the regulating ring structure (4) corresponds to the inside of the top of the aerobic digestion chamber (2); the adjusting ring structure (4) comprises a ring-shaped pipe structure (41) and a swinging structure (42); the ring-shaped pipe structure (41) is fixedly sleeved on the neck-reducing end (12); the outlet end of the necking end (12) is outwards expanded, and the top surface of the annular tube structure (41) is flush with the expansion port of the necking end (12);
the ring-shaped pipe structure (41) comprises a rotating sheet (411); a plurality of rotating sheets (411) are vertically spliced into an annular tube structure (41); a swinging structure (42) is arranged on the inner wall of the annular tube structure (41) corresponding to the rotating sheet (411); the swing structure (42) is fixed on the side wall of the neck reducing end (12) through a connecting rod (421) which is arranged annularly; the swing structure (42) is in driving connection with the inner wall of the middle part of the rotating sheet (411); the rotating pieces (411) rotate, the side wall of the annular tube structure (41) is of a step-shaped structure, and the rotating pieces (411) are spaced; a plurality of water leakage holes (412) are formed in the side wall of the rotating sheet (411) at the top of the annular pipe structure (41); the aerobic digestion chamber (2) is communicated with the interior of the annular pipe structure (41) through a gap between the water leakage hole (412) and the rotating sheet (411);
a bacterium net (422) is clamped between the connecting rods (421); aerobic microorganisms are arranged on the bacterial net (422); a vent pipe (43) is fixedly arranged on the side wall of the inner necking end (12) at the bottom of the ring-shaped pipe structure (41); the air pipe (43) is communicated with the air pump through an air pipe; a plurality of air outlet pipes (431) are arranged on the side wall of the air pipe (43).
9. The method for treating wastewater in a biological contact wastewater treatment system according to any of claims 1 to 8, wherein the first step of: sewage enters the expansion cavity (21) through the water inlet pipe (231); the sewage in the expansion chamber (21) flows into the pressurizing chamber (25) through the communication hole (221); the pressurizing liquid inlet structure (3) conveys and pushes the sewage into the anaerobic digestion cavity (1) for anaerobic digestion treatment;
the second step is that: a water receiving groove (311) on the rotating table (31) is used for periodically receiving water and conveying, a pushing plate (331) pushes sewage into the anaerobic digestion chamber (1) through the water receiving groove (222), and the sewage is digested and treated by anaerobic microorganisms on the placing disc (11);
the third step: sewage after anaerobic digestion treatment is distributed into the annular pipe structure (41) through the neck end (12), and the rotating sheet (411) rotates to correspondingly adjust and control the sewage amount passing through the annular pipe structure (41);
the fourth step: the sewage after being digested by the aerobic microorganisms in the ring-shaped pipe structure (41) flows into the expansion cavity (21) and is then pumped out through the water outlet pipe (24).
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| CN202110092954.XA CN112897682A (en) | 2021-01-25 | 2021-01-25 | Biological contact sewage treatment system and sewage treatment method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976620A (en) * | 2021-10-27 | 2022-01-28 | 南京工业大学 | Microbial remediation soil treatment system and method for heavy metal contaminated soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113976620A (en) * | 2021-10-27 | 2022-01-28 | 南京工业大学 | Microbial remediation soil treatment system and method for heavy metal contaminated soil |
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