CN216191737U

CN216191737U - Domestic sewage integrated treatment device

Info

Publication number: CN216191737U
Application number: CN202122156764.8U
Authority: CN
Inventors: 王勇; 计鸣; 刘苗苗; 任荣山
Original assignee: Hangzhou Yongbang Environmental Protection Technology Co ltd
Current assignee: Hangzhou Yongbang Environmental Protection Technology Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-04-05
Anticipated expiration: 2031-09-07

Abstract

The utility model relates to the field of sewage treatment, and discloses an integrated domestic sewage treatment device which comprises a tank body, a water inlet and a water outlet, wherein the tank body is horizontally arranged, the water inlet is positioned at the front end of the tank body, the water outlet is positioned at the rear end of the tank body, a regulating area, an anaerobic area, an aerobic area and a settling area are sequentially connected in the tank body, the anaerobic area consists of an acid-producing bacterium enrichment area and a methanogenic bacterium enrichment area, the acid-producing bacterium enrichment area is positioned at the upstream of the methanogenic bacterium enrichment area, an aeration device is laid at the bottom of the aerobic area, the aeration device is provided with a plurality of aeration outlets, and an aeration regulating plate is arranged on the aeration device. In order to overcome the defects of incomplete biological treatment and poor effluent quality in the existing domestic sewage treatment, a regulating area is used for removing solid suspended matters, biochemical treatment is carried out in an anaerobic area, degradation is carried out in an aerobic area to reduce COD, BOD and ammonia nitrogen, and treatment is carried out in a settling area through the combination of inclined tube filler, so that the domestic sewage can stably reach the first-level discharge standard in the integrated wastewater discharge standard (GB 8978-1996).

Description

Domestic sewage integrated treatment device

Technical Field

The utility model relates to the field of sewage treatment, in particular to an integrated domestic sewage treatment device.

Background

With the development of society, the increase of human activities and the increase of domestic sewage, the treatment of the domestic sewage is beneficial to reducing the environmental burden, improving the environmental quality and reducing the spread of diseases.

Chinese patent publication No. CN107759013A discloses a bury formula integration domestic sewage treatment device, a serial communication port, including sedimentation tank and biological deodorization tank, sedimentation tank one side top is passed through the inlet tube and is connected with the feed pump, and the feed pump other end is connected with the water inlet, the inlet tube is equipped with the jube with the sedimentation tank junction, the sedimentation tank top is equipped with the sewage delivery pump, sedimentation tank one side is fixed with biological deodorization tank, and biological deodorization tank one side is equipped with the anaerobism pond, one side in anaerobism pond is fixed with the disinfection reaction tank, the sedimentation tank bottom has the blow off pipe through the pump intercommunication of decontaminating, the inside microorganism culture frame that is equipped with of biological deodorization tank, and thing biological culture frame inside packing has microorganism culture matrix, sanitary culture frame top extension pipe and water pipe connector intercommunication, the inside embedding of extension pipe and microorganism culture frame junction has the flow equalizing board. The anaerobic tank can improve the biodegradability of sewage, but the effluent of the anaerobic tank is not completely degraded to organic matters in the sewage, and a complete biodegradation process can be completed by further biochemical treatment.

Disclosure of Invention

The utility model discloses a domestic sewage integrated treatment device which is thorough in domestic sewage biological treatment and excellent in effluent quality, and aims to overcome the defects that the biological treatment is not thorough and the effluent quality is poor in the conventional domestic sewage treatment.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

the utility model provides a domestic sewage integration treatment device, including the jar body that the level set up, be located the water inlet of jar body front end, be located the delivery port of jar body rear end, jar internal regulation district, anaerobic zone, aerobic zone, the settling zone that connects gradually that is provided with, anaerobic zone comprises acid-producing bacteria enrichment district and methanogen enrichment district, acid-producing bacteria enrichment district is located methanogen enrichment district upper reaches, aeration equipment has been laid to aerobic zone bottom, aeration equipment is equipped with a plurality of aeration exports, the last aeration regulating plate that is equipped with of aeration equipment. Collecting domestic sewage in a regulation area and homogenizing water quality and water quantity; then the sewage is led into an anaerobic zone for anaerobic biochemical treatment, the COD of the sewage is reduced and the biodegradability is improved by utilizing the characteristics of low nutritional requirement, strong toxicity resistance and high molecular weight of degradable organic matters of anaerobic bacteria, wherein the acid-producing bacteria enrichment zone which grows fast and has poor sensitivity to toxicants is arranged at the upstream of the methanogenic bacteria enrichment zone, the impact resistance composite capacity of the system can be improved, and the stability of the whole treatment system is ensured; the effluent of the anaerobic zone enters an aerobic zone, organic matters which are not completely degraded by anaerobic bacteria are further degraded by aerobic bacteria, ammonia nitrogen in sewage is removed, an aeration adjusting plate is arranged to improve the aeration effect, the content of dissolved oxygen is increased, and the aerobic treatment effect is improved; and the effluent of the aerobic zone enters a precipitation zone again for precipitation, so that solid-liquid separation is completed, the supernatant reaches the standard and is discharged, and the sludge is transported or refluxed. The integrated treatment device has compact structure, small occupied area and excellent treatment effect, and is suitable for the treatment of domestic sewage.

Preferably, the aeration adjusting plate is uniformly provided with a plurality of air outlet micropores in the region outside the vertical direction of the aeration outlet of the aeration device. Air density is less than water, the gas jet of aeration export spills over the surface of water under pressure and buoyancy effect fast, and oxygen is originally very limited at aquatic solubility, gaseous quick overflow makes dissolved oxygen content just also lower partially, do not set up the micropore of giving vent to anger in the aeration export vertical direction, the efflux is broken into the microbubble behind striking aeration regulating plate, increase the area of contact of gas and sewage, offset the initial velocity that aeration equipment gave the air current simultaneously, the rising of slowing down the air current spills over, the extension overflows with the contact time of sewage, evenly distributed's the micropore of giving vent to anger also is favorable to the homodisperse of gas in the system, thereby increase the area of contact with sewage and increase dissolved oxygen content, be favorable to the promotion of aerobic bacteria's biochemical treatment effect.

Preferably, the aeration adjusting plate is horizontally arranged above the aeration device, and the size of the aeration adjusting plate is the same as the size of the cross section of the aerobic zone. The aeration adjusting plate divides the aerobic zone into two parts, the air outlet of the aeration pipeline is limited below the aeration adjusting plate and can only be discharged from the air outlet micropores, after aeration is started, the pressure of the area below the aeration adjusting plate is increased, sludge above the air outlet micropores and blocking the air outlet micropores is flushed away, uniform distribution of aerobic bacteria in a system is facilitated, meanwhile, enrichment of activated sludge in the area below the aeration pipeline is avoided, and the utilization effect of flora is improved.

Preferably, a basket grid is arranged in the adjusting area and connected with the water inlet. The hand-basket grid can carry out the prefilter to the solid contaminant in the domestic sewage, reduces the suspended solid concentration in the sewage, and the continuous stability of reinforcing subsequent processing also makes things convenient for the outward transportation processing to solid contaminant.

Preferably, the upper end of the settling zone is provided with a triangular weir. The triangular weir is arranged to avoid short flow and make the outflow uniform.

Preferably, the middle of the settling zone is provided with an inclined tube filler, a water inlet of the settling zone is positioned below the inclined tube filler, and a water outlet of the settling zone is positioned at the upper end of the settling zone. The effluent of the aerobic zone enters the settling zone from a water inlet of the settling zone, sludge and flora are blocked at the bottom of the settling zone under the action of the inclined tube filler, and the treated clear water is discharged from a water outlet after reaching the standard.

Preferably, the bottom of the precipitation zone is provided with an air stripping device. Sludge accumulated in the settling zone is returned to the front-section aerobic zone through a gas device for recycling.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects: the aeration is uniform, the flora dispersion effect is good, the utilization rate is high, and the biochemical treatment effect is excellent; the organic matter, ammonia nitrogen and COD in the domestic sewage are fully treated, and the effluent quality is ensured; compact structure and high space utilization rate, and is suitable for the treatment of various domestic sewage.

Drawings

FIG. 1 is a sectional view of an integrated domestic sewage treatment apparatus according to the present invention.

Fig. 2 is a sectional view of the aeration pipe and the aeration adjusting plate of fig. 1.

Wherein, 1, a tank body; 2. a water inlet; 3. a water outlet; 4. a regulatory region; 5. an anaerobic zone; 6. an aerobic zone; 7. a settling zone; 8. an acid-producing bacteria-enriched zone; 9. a methanogen enrichment zone; 10. an aeration pipe; 11. an aeration outlet; 12. an aeration adjusting plate; 13. a basket grid; 14. a stirrer; 15. a submersible pump; 16. filling the inclined tube; 17. a gas stripping pump; 18. a triangular weir; 19. air outlet micropores; 20. a water inlet of the settling zone.

Detailed Description

The utility model is further described with reference to the following detailed description and accompanying drawings.

As shown in figure 1, the integrated domestic sewage treatment device comprises a tank body 1 which is horizontally arranged, a water inlet 2 which is positioned at the front end of the tank body 1 and a water outlet 3 which is positioned at the rear end of the tank body 1, wherein a regulating area 4, an anaerobic area 5, an aerobic area 6 and a settling area 7 which are sequentially connected are arranged in the tank body 1, the anaerobic area 5 consists of an acid-producing bacterium enrichment area 8 and a methanogenic bacterium enrichment area 9, the acid-producing bacterium enrichment area 8 is positioned at the upstream of the methanogenic bacterium enrichment area 9, an aeration pipeline 10 is laid at the bottom of the aerobic area 6, the aeration pipeline 10 is provided with a plurality of aeration outlets 11, and an aeration regulating plate 12 is arranged on the aeration device 10.

In order to reduce the concentration of suspended solid in the sewage, a basket grid 13 is arranged in the adjusting area 4, and the basket grid 13 is connected with the water inlet 2.

In order to improve the aeration effect and enhance the utilization rate of the flora, the aeration adjusting plate 12 is horizontally arranged, the size of the aeration adjusting plate 12 is the same as that of the aerobic zone 6, and as shown in fig. 2, a plurality of air outlet micropores 19 are uniformly arranged in the aeration adjusting plate 12 in the area other than the vertical direction of the aeration outlet 11 of the aeration pipeline 10.

In order to improve the quality of the discharged water, an inclined tube filler 16 is arranged in the middle of the settling zone 7, and a settling zone water inlet 20 is arranged below the inclined tube filler 16.

In order to recycle the sludge accumulated in the settling zone 7, an air stripping pump 17 is arranged at the bottom of the settling zone 7.

In order to evenly discharge water and prevent short flow, the upper end of the settling zone 7 is provided with a triangular weir 18.

Taking a domestic wastewater treatment project of a certain company as an example, the yield of domestic wastewater per day is 15m³The COD is 412mg/L, the ammonia nitrogen is 43mg/L, the BOD is 223mg/L, and the concentration SS of suspended solids is 214 mg/L. Domestic wastewater enters a tank body 1 from a water inlet 2, is filtered by a basket grid 13 and then is guided into a regulating area 4, a stirrer 14 is started to regulate uniform water quality, a submersible pump 15 is started, the wastewater is pumped into an anaerobic area 5, is guided into an acid-producing bacterium enriching area 8 of the anaerobic area 5 through the primary action of anaerobic acid-producing bacteria and then is guided into a methanogenic bacterium enriching area 9, the wastewater after anaerobic treatment in the anaerobic area 5 is guided into an aerobic area 6 for aerobic treatment, gas jet flow released by an aeration outlet 11 on an aeration pipeline 10 is blocked by an aeration regulating plate 12, the gas is dispersed into a plurality of small bubbles and is upwards diffused by gas outlet micropores 19 on the aeration regulating plate 12, meanwhile, due to the fact that the air pressure below the aeration regulating plate 12 is large, active sludge above the aeration regulating plate 12 is dispersed by gas flow diffused by the gas outlet micropores 19 and is more uniformly distributed in an aerobic tank, the wastewater after aerobic treatment enters a settling area 7 from a water inlet 20 of the settling area, the sludge is precipitated to the bottom under the action of the inclined tube filler 16, the supernatant is discharged from the triangular weir 18 through the water outlet 3, the sludge entering the precipitation zone 7 together with the sewage is intercepted at the bottom of the precipitation zone 7, and the intercepted sludge is pumped back to the aerobic zone 6 by the air lift pump 17. The quality of the effluent of the triangular weir is detected, the COD is 78mg/L, the ammonia nitrogen is 11mg/L, the BOD is 14mg/L, and the SS is 43mg/L, and the quality of the effluent after treatment reaches the first-level discharge standard in the Integrated wastewater discharge Standard (GB 8978-1996).

Claims

1. The utility model provides a domestic sewage integration treatment device, includes the jar body that the level set up, be located the water inlet of jar body front end, be located the delivery port of jar body rear end, its characterized in that, jar internal regulation district, anaerobic zone, aerobic zone, the settling zone that connects gradually that is provided with, anaerobic zone comprises acid-producing bacteria enrichment district and methanogen enrichment district, acid-producing bacteria enrichment district is located methanogen enrichment district upper reaches, aeration equipment has been laid to the aerobic zone bottom, aeration equipment is equipped with a plurality of aeration exports, the last aeration regulating plate that is equipped with of aeration equipment.

2. The integrated domestic sewage treatment device according to claim 1, wherein said aeration regulation plate is provided with a plurality of air outlet micropores uniformly in the region other than the vertical direction of the aeration outlet of the aeration device.

3. The integrated domestic sewage treatment apparatus according to claim 1 or 2, wherein said aeration regulation plate is horizontally disposed above the aeration apparatus, and the size of the aeration regulation plate is the same as the size of the cross section of the aerobic zone.

4. The integrated domestic sewage treatment device according to claim 1, wherein a basket grid is arranged in said regulation zone, and said basket grid is connected with said water inlet.

5. The integrated domestic sewage treatment apparatus according to claim 1, wherein a triangular weir is provided at an upper end of said settling zone.

6. The integrated domestic sewage treatment device according to claim 1, wherein an inclined tube filler is arranged in the middle of the settling zone, the water inlet of the settling zone is positioned below the inclined tube filler, and the water outlet is positioned at the upper end of the settling zone.

7. The integrated domestic sewage treatment device according to claim 6, wherein an air stripping device is provided at the bottom of said settling zone.