CN218025575U - Self-adaptive aeration device for town sewage treatment - Google Patents

Abstract

The utility model discloses a self-adaptation aeration equipment for town sewage treatment, including the effluent water sump, be equipped with sewage in the effluent water sump, be equipped with DO dissolved oxygen appearance in the sewage, be equipped with the mixer on the effluent water sump pool wall, be equipped with aeration mechanism in the effluent water sump, aeration mechanism includes pivot, bracing piece, biological film filler and biological aeration runner, the pivot both ends are passed through the bearing and are installed on the mounting bracket, and the mounting bracket bottom is fixed in the effluent water sump, and the outside is equipped with the ring in the middle of the pivot, is connected through a plurality of bracing pieces between pivot and the ring, the distribution is biological film filler on the ring, and the ring outside is a plurality of biological aeration runners of annular distribution, and biological aeration runner is fixed in the ring outer fringe, connects through the connecting rod between two adjacent biological aeration runners, the effluent water sump is equipped with outward and is used for driving the rotatory driving motor of pivot, and driving motor's output shaft is connected with the pivot. The utility model adopts the combined action of multiple aeration modes to realize the purpose of aeration, and the effect is better.

Description

Self-adaptive aeration device for town sewage treatment

Technical Field

The utility model relates to a self-adaptation aeration equipment for sewage treatment of a town.

Background

The town sewage belongs to a part with a large proportion in pollution discharge, and has the following characteristics:

1. large fluctuation of sewage discharge

Most of town domestic sewage is regularly discharged. The discharge amount of domestic sewage is usually more in the morning, noon and evening, the discharge amount is gradually reduced after the evening, and the water is cut off at night. The number of workers in rural areas is large, the population in ordinary villages is small, and holidays are increased dramatically. Therefore, the amount of domestic sewage is significantly increased during holidays such as spring festival, and the amount of sewage discharge is reduced in ordinary times. In addition, factors such as industrial structure, seasonal variation, and regional environment also affect the amount of discharged sewage and the quality of discharged water.

2. Complex pollutants and large concentration change

The town sewage pollutants have complex components, main pollutants comprise organic matters such as carbohydrates, proteins, amino acids, fats and the like, and the pollutants do not contain toxic substances generally. The water quality has the characteristics of high N and P contents, good biodegradability, less organic matters and less toxic and harmful substances which are difficult to degrade, and the like. The sewage sources mainly comprise: domestic sewage, aquaculture wastewater, slaughter wastewater, food processing wastewater, other industrial wastewater, and the like. Due to the difference of the structure, geographical area, climate characteristics and the like of the town economic industry, the concentration of pollutants in the sewage is greatly changed. The huge fluctuation of the water quality and the water quantity can be finally fed back to a sewage treatment system, and heavy operation and maintenance pressure is caused.

3. Small sewage treatment scale for single town

At present, the size of a village-grade sewage treatment plant is about 30-300m < 3 >/d, the size of a ballast sewage treatment plant is about 500-5000m < 3 >/d, and the size of a city treatment plant is over 10000m < 3 >/d.

The scale of town sewage treatment is far from that of the common urban sewage treatment. From the characteristics, the problems of town sewage treatment are complex and various, and different from the urban sewage treatment, the town sewage treatment mode cannot be simply copied.

The characteristics of the town sewage show that the difficulties of construction and operation of the town sewage are as follows:

1) The fluctuation of the collected water quality and the water quantity of the town sewage treatment plant is huge, the fluctuation load with high strength is easy to cause, the running problems of activated sludge aging, equipment running inefficiency and the like are caused, the effluent quality is poor, and the due environmental benefit and economic benefit of a project can not be exerted.

2) The facility operation management work is not in place

Under the influence of various factors such as economic level, geographical position, salary treatment, working environment and the like of the towns, the adoption of the high-level talents trained professionally has certain difficulty. The shortage of talent resources causes the technical strength of sewage management to be insufficient, and also causes the operation management work of facilities of a sewage treatment plant to be not in place, so that the deficiency of the operation technical capability is made up by urgently waiting for improving the automatic intelligence degree of the system.

With the environmental protection in recent years, the container type integrated treatment equipment is generally adopted in the design of the existing conventional treatment technology built in the towns, and the automatic regulation capability of the system facing the fluctuation of water quality and water quantity is relatively small along with the fluctuation of water quantity and water quality, such as: when water is not fed into the system, the fan does not work, so that activated sludge is completely deposited at the bottom, the activated sludge is aged and is impacted by water, the system is easy to burst, the construction cost is high, the system is not suitable for transportation in remote areas, the operation cost is high, and the use requirement is difficult to meet by the original container type process.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a self-adaptive aeration device for town sewage treatment, which has simple structure, low cost and reliable work.

The utility model provides a technical scheme of above-mentioned technical problem is: the utility model provides a self-adaptation aeration equipment for town sewage treatment, includes the effluent water sump, is equipped with sewage in the effluent water sump, is equipped with DO dissolved oxygen appearance in the sewage, is equipped with the mixer on the effluent water sump pool wall, is equipped with aeration mechanism in the effluent water sump, aeration mechanism includes pivot, bracing piece, parent biological membrane filler and biological aeration runner, the pivot both ends are passed through the bearing and are installed on the mounting bracket, and the mounting bracket bottom is fixed in the effluent water sump, and the outside is equipped with the ring in the middle of the pivot, is connected through a plurality of bracing pieces between pivot and the ring, the parent biological membrane filler that distributes on the ring, the ring outside is a plurality of biological aeration runners of annular distribution, and biological aeration runner is fixed at the ring outer fringe, connects through the connecting rod between two adjacent biological aeration runners, be equipped with outside the effluent water sump and be used for driving the rotatory driving motor of pivot, driving motor's output shaft and pivot are connected.

Above-mentioned a self-adaptation aeration equipment for town sewage treatment, biological aeration runner includes cylindrical gasbag, and cylindrical gasbag is fixed at the ring outer fringe, and open on one side of cylindrical gasbag top has air intlet, and open in cylindrical gasbag bottom has the sewage export, and sewage opening one side is equipped with the air water demarcation pole of 7 fonts.

Above-mentioned a self-adaptation aeration equipment for town sewage treatment, the effluent water sump outside is equipped with the air-blower, and the effluent water sump bottom is equipped with EPDM aeration dish, distributes a plurality of tubaeform aeration mouths on the EPDM aeration dish, and the air-blower passes through the pipeline and is connected with the aeration mouth on the EPDM aeration dish.

The beneficial effects of the utility model reside in that: the aeration sources of the utility model are three, the first is that after the cylindrical air bag sucks air, the air is pressed into the water to slowly release the air, so as to generate aeration effect; the second is that when the cylindrical air bag discharges sewage and sucks air, the sewage flows out from the sewage outlet to generate the effect of drop aeration; the third is that air is sent into the sewage tank through an EPDM aeration disc by an air blower to generate aeration effect; the aim of aeration is achieved under the combined action of various aeration modes, and the effect is better.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the aeration mechanism.

Fig. 3 is a schematic view of the air cutting of the cylindrical air bag of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1-3, a self-adaptive aeration device for sewage treatment in town comprises a sewage tank 8, sewage 9 is disposed in the sewage tank 8, a DO dissolved oxygen meter 3 is disposed in the sewage 9, a stirrer 2 is disposed on the wall of the sewage tank 8, an aeration mechanism is disposed in the sewage tank 8, the aeration mechanism comprises a rotating shaft 10, a support rod 11, a biofilm filler 6 and a biological aeration runner 5, two ends of the rotating shaft 10 are mounted on a mounting frame 12 through bearings, the bottom of the mounting frame 12 is fixed in the sewage tank 8, a ring 13 is disposed outside the middle of the rotating shaft 10, the rotating shaft 10 is connected with the ring 13 through a plurality of support rods 11, the biofilm filler 6 is distributed on the ring 13, a plurality of biological aeration runners 5 are distributed on the outer side of the ring 13 in an annular manner, the biological aeration runners 5 are fixed on the outer edge of the ring 13, two adjacent biological aeration runners 5 are connected through a connecting rod 14, a driving motor 7 for driving the rotating shaft 10 is disposed outside the sewage tank 8, and an output shaft of the driving motor 7 is connected with the rotating shaft 10.

The biological aeration rotating wheel 5 comprises a cylindrical air bag 15, the cylindrical air bag 15 is fixed on the outer edge of the circular ring 13, an air inlet 16 is formed in one side of the top of the cylindrical air bag 15, a sewage outlet is formed in the bottom of the cylindrical air bag 15, and a 7-shaped air-water dividing rod 17 is arranged on one side of the sewage outlet. Carry the biological film filler 6 in the middle of the aeration mechanism, biological aeration runner 5 is a biological cylinder shape diaphragm rotary table, through the rotation of the rotating shaft 10, realize the cylindrical gasbag 15: air storage in the cavity → water input → air release and water supplement by cutting → air release and water supplement is completed → water output is started → air supplement and water drop and aeration are performed by water release → air supplement by cavity air storage. The biofilm-philic filler 6 is hung in the middle of the aeration mechanism, and the air-water state conversion is realized along with the biological aeration rotating wheel 5, so that the biofilm is more stable and efficient.

The outer part of the sewage tank 8 is provided with an air blower 1, the bottom of the sewage tank 8 is provided with an EPDM aeration disc 4, a plurality of horn-shaped aeration ports 18 are distributed on the EPDM aeration disc 4, the air blower 1 is connected with the aeration ports 18 on the EPDM aeration disc 4 through pipelines, and the air blower 1 and the EPDM aeration disc 4 are used as air compensation devices.

The utility model discloses a theory of operation does:

and (3) aeration reaction: after the sewage 9 is pretreated and uniformly regulated, the sewage 9 is lifted to an anoxic zone by a lifting pump to perform anoxic reaction, and then enters an aeration device;

sewage 9 is in the effluent water sump 8, and the device is automatic according to terminal DO dissolved oxygen appearance 3 data feedback, automatic adaptation aeration rate, and water load can be in proper order automatically regulated from low to high does: the fully-mixed flow state (the biological aeration runner 5 is not moved, air is not compensated), the semi-open state of the mixed flow runner (the rotating frequency of the biological aeration runner 5 is low), the fully-open state of the mixed flow runner (the rotating frequency of the biological aeration runner 5 is increased along with the increase of water pollution load), and the fully-open air compensation state of the coagulation runner (the biological aeration runner 5 is rotated at full load, and an air compensation device is opened) until the DO dissolved oxygen at the tail end is controlled to be between 0.5mg/L and 3mg/L for stable operation. The system controls the concentration of the activated sludge to be 3000mg/L-5000 mg/L.

After the town domestic sewage is treated by a series of combinations, the chemical oxygen demand (CODCr) of the final effluent is stabilized between 15.2 and 40.5 mg/L, the biochemical oxygen demand (BOD 5) is stabilized between 2.5 and 7.3mg/L, the suspended matter (SS) is stabilized between 2.5 and 6.5mg/L, the total nitrogen (counted by N) is stabilized between 3.3 and 9.5mg/L, the ammonia nitrogen (counted by N) is stabilized between 1.2 and 3.5mg/L, the total phosphorus (counted by P) is stabilized between 0.1 and 0.4mg/L, the fecal coliform number/(piece/L) is stabilized between 150 and 400/L, the pH value is stabilized between 6.5 and 8.5, and the chroma (dilution factor) is stabilized between 15 and 25. Can meet the standard requirements of first-class standard A of pollutant emission standards (GB 18918-2002) of urban sewage treatment plants. The criteria are as follows: chemical oxygen demand (CODCr) is less than or equal to 50mg/L, biochemical oxygen demand (BOD 5) is less than or equal to 10mg/L, suspended matter (SS) is less than or equal to 10mg/L, total nitrogen (counted by N) is less than or equal to 15mg/L, ammonia nitrogen (counted by N) is less than or equal to 5 (8) mg/L, total phosphorus (counted by P) is less than or equal to 0.5mg/L, the number of colon flora/(number/L) is less than or equal to 1000/L, the PH value is 6-9, and the chroma (dilution multiple) is less than or equal to 30.

Claims (3)

1. A self-adaptation aeration equipment for town sewage treatment which characterized in that: including the effluent water sump, be equipped with sewage in the effluent water sump, be equipped with DO dissolved oxygen appearance in the sewage, be equipped with the mixer on the effluent water sump pool wall, be equipped with aeration mechanism in the effluent water sump, aeration mechanism includes pivot, bracing piece, parent's biomembrane filler and biological aeration runner, the pivot both ends are passed through the bearing and are installed on the mounting bracket, and the mounting bracket bottom is fixed in the effluent water sump, and the outside is equipped with the ring in the middle of the pivot, is connected through a plurality of bracing pieces between pivot and the ring, the parent's biomembrane filler that distributes on the ring, the ring outside is a plurality of biological aeration runners of annular distribution, and biological aeration runner is fixed in the ring outer fringe, connects through the connecting rod between two adjacent biological aeration runners, be equipped with the driving motor who is used for driving the pivot rotation outside the effluent water sump, driving motor's output shaft and pivot are connected.

2. The adaptive aeration device for the town sewage treatment according to claim 1, wherein: the biological aeration rotating wheel comprises a cylindrical air bag, the cylindrical air bag is fixed on the outer edge of a circular ring, an air inlet is formed in one side of the top of the cylindrical air bag, a sewage outlet is formed in the bottom of the cylindrical air bag, and a 7-shaped air-water boundary rod is arranged on one side of the sewage opening.

3. The adaptive aeration device for the town sewage treatment according to claim 1, wherein: the sewage pond outside is equipped with the air-blower, and the sewage pond bottom is equipped with the EPDM aeration dish, and the EPDM aeration is coiled and is distributed a plurality of tubaeform aeration mouths, and the air-blower passes through the pipeline and is connected with the aeration mouth on the EPDM aeration dish.

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