CN205313321U - Novel AO type integration sewage treatment device - Google Patents

Abstract

The utility model discloses a novel AO type integrated sewage treatment equipment, which includes a tank body, which is provided with multiple partitions, and divides the tank body into a sludge tank, anoxic tank, an aerobic tank and a sedimentation tank. In the upper left corner of the tank body, there is a sludge inlet pipe connected to the sludge tank, and in the upper right corner, there is a water outlet pipe connected to the sedimentation tank. pool, aerobic tank and sedimentation tank are connected, a mixed liquid return device is provided between the aerobic tank and anoxic tank, a sludge return device is provided between the sedimentation tank and the sludge tank, and anaerobic tank is provided with anaerobic Packing, the aerobic tank is provided with aerobic packing, and the bottom is provided with an aeration device. The utility model adopts an aeration method different from the traditional ones, and cooperates with unique fillers to increase the processing load. The central corridor aeration adopted ensures the water quality of the outlet water. The innovation of the reflux system can complete the reflux without adding more reflux pumps. Sludge removal to complete nitrogen and phosphorus removal.

Description

A new AO type integrated sewage treatment equipment

technical field

The utility model relates to a novel AO type integrated sewage treatment equipment.

Background technique

At present, small-scale and decentralized sewage treatment technologies mainly include: constructed wetlands, artificial floating islands, unpowered domestic sewage treatment, MBR, biological contact oxidation, aerobic moving bed, anaerobic drip filtration, etc. The above technologies generally adopt brick-concrete structure, reinforced concrete structure, and iron plate structure as the pool box, combined with their respective process characteristics, each has its advantages and disadvantages. However, the common disadvantages are: corrosion problems, leakage problems, blockage problems, high construction costs, long construction period, high operating costs, high management costs, and unstable effluent quality. Lead to these problems, mainly in the material and process, there is no reasonable choice. In addition, the traditional A/O sewage treatment process is difficult to cultivate sludge with unique functions, and the degradation rate of refractory substances is low: the internal circulation fluid contains a certain amount of DO, which makes it difficult to maintain an ideal anoxic state in the A section, which affects denitrification As a result, the denitrification efficiency decreases.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a novel AO type integrated sewage treatment equipment.

In order to achieve the above object, the technical scheme adopted by the utility model is: it includes a tank body, and the tank body is provided with a plurality of dividing plates, and the tank body is divided into a sludge tank, an anoxic tank, an aerobic tank and a sedimentation tank. The upper left corner of the tank body is provided with a sludge inlet pipe connected to the sludge tank, and the upper right corner is provided with a water outlet pipe connected with the sedimentation tank. A manhole connected to the aerobic tank and the sedimentation tank, a mixed liquid return device is provided between the aerobic tank and the anoxic tank, a sludge return device is provided between the sedimentation tank and the sludge tank, and the anoxic tank Anaerobic packing is provided, aerobic packing is provided in the aerobic pool, and an aeration device is provided at the bottom.

Further, the sedimentation tank is provided with inclined pipes for filtering sedimentation sludge.

Preferably, the tank body is made of FRP.

Further, the cross-section of the aerobic pool is circular.

The utility model has the following beneficial effects:

1. The utility model can be buried in the ground, has a compact structure and does not occupy the surface area. Compared with the traditional A/O process, the utility model uses a pre-sludge tank to provide a large number of microbial strains for the subsequent biochemical system, and can cultivate Activated sludge with unique functions: the pre-sludge tank can effectively consume DO in the reflux liquid, reducing the impact on the denitrification effect of stage A. The reflux sludge contains nitrate nitrogen (NO ₃ -N) and Nitrite nitrogen (NO ₂ -N) is reduced to gaseous nitrogen (N ₂ ) under the action of denitrifying bacteria, so as to achieve the purpose of denitrification.

2. According to the status quo of urban sewage treatment, the sequence of treatment units different from the traditional A/O can be adopted. The pre-sludge tank can serve as the primary sedimentation tank and the left and right of the anaerobic tank, reducing the impact of DO on the treatment effect of the A section. At the same time, nitrate nitrogen (NO ₃ -N) and nitrite nitrogen (NO ₂ -N) in the reflux liquid are reduced to nitrogen (N ₂ ) under the action of denitrifying bacteria. The sludge in the sedimentation tank (12) is lifted to the sludge tank, so as to avoid microorganism anoxic absorption of phosphorus and denitrification in the sedimentation tank, affecting the quality of effluent water.

3. The cross-section of the aerobic pool of the present utility model is circular, and adopts the microporous aeration of the central corridor diaphragm. The sewage flows upward under the continuous impact of the air flow at the bottom of the pool, and flows continuously to both sides at the top liquid level, forming two Circulation, in the process of sewage treatment, there are push flow and circulation at the same time, so that the sewage is fully mixed, the water quality is uniform, and at the same time, there are sufficient conditions for the contact between the sewage and the filler.

4. The tank body of this utility model is made of glass fiber reinforced plastics, which solves the problems of long construction period and high cost in existing reinforced concrete structures, and solves the problems of corrosion and leakage caused by using steel plates as materials. Therefore, the tank body of this utility model It has the characteristics of short production time, pressure resistance, zero corrosion, and zero leakage. At the same time, it is aimed at the characteristics of rural sewage treatment, and at the same time, in order to reduce the burden on equipment managers, this process adopts an automatic control system and sends operating parameters to users and supervision departments through GPRS. , you can remotely modify the operating parameters of the device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

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

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1, the utility model includes a tank body 1, which is provided with a multi-channel partition 5, and the tank body 1 is divided into a sludge tank 2, an anoxic tank 3, an aerobic tank 4 and a sedimentation tank 5 The upper left corner of the tank body 1 is provided with a sludge inlet pipe 13 communicating with the sludge tank 2, and the upper right corner is provided with a water outlet pipe 14 communicating with the sedimentation tank 5. On the top of the tank body 1, there are multiple The inspection hole 15 connected with the sludge tank 2, the anoxic tank 3, the aerobic tank 4 and the sedimentation tank 5.

The utility model is provided with a mixed liquid return device 10 between the aerobic pool 4 and the anoxic pool 3, and the sewage deposited at the bottom of the aerobic pool 4 is returned to the anoxic pool 3 through the mixed liquid return device 10, thereby increasing denitrification and denitrification When the concentration of ammonia nitrogen is low, it can be closed and not used; when the concentration of pollutants or ammonia nitrogen is too high, open the return valve to keep the mixed liquid backflow state. A sludge return device 11 is provided between the sedimentation tank 5 and the sludge tank 2, and the sludge in the sedimentation tank 5 is returned to the sludge tank 2 through the sludge return device 11, so as to avoid microbial anoxic absorption of phosphorus and denitrification in the sedimentation. It is carried out in tank 5, which affects the quality of effluent water. The pre-sludge tank 2 can effectively consume DO in the reflux liquid and reduce the impact on the denitrification effect of stage A. The reflux sludge contains nitrate nitrogen (NO ₃ -N) Nitrite nitrogen (NO ₂ -N) is reduced to gaseous nitrogen (N ₂ ) under the action of denitrifying bacteria, so as to achieve the purpose of denitrification.

Anoxic tank 3 is provided with anaerobic filler, aerobic tank 4 is provided with aerobic filler, and the bottom is provided with aeration device 8, and the section of aerobic tank 4 is circular, and two circulations will be formed during aeration. Make the push flow and circulation exist at the same time, make the sewage fully mixed and contact with the biofilm, adopt the central corridor membrane microporous aeration, the sewage flows upward under the continuous impact of the air flow at the bottom of the pool, and continuously flows to both sides at the top liquid surface , forming two circulations. In the sewage treatment process, there are push flow and circulation at the same time, so that the sewage is fully mixed and the water quality is uniform. At the same time, there are sufficient conditions for the contact between the sewage and the filler. A different aeration method is adopted from the traditional one. The filler can increase the processing load and save the land area. The central corridor aeration adopted, due to the traditional aeration method, ensures the water quality of the effluent.

Preferably, the tank body 1 of the present utility model is made of FRP, and the cylindrical tank body made of FRP material has the characteristics of light weight, corrosion resistance, anti-aging, good sealing performance and anti-leakage.

Preferably, the sedimentation tank 5 is provided with an inclined pipe 12 for filtering sludge, and the sewage entering the sedimentation tank 5 is filtered through the inclined pipe 12 and then discharged from the outlet pipe 14 .

Preferably, the separator 5, anaerobic packing 16, aerobic packing 7, inclined pipe 12, aeration device, 8, etc. are all made of high-strength non-metallic materials.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (4)

1. a new A O type integrated sewage treating apparatus, it is characterized in that: comprise tank body, many roads dividing plate it is provided with in tank body, tank body is divided into sludge sump, anoxic pond, Aerobic Pond and settling tank, the mud water inlet pipe being connected with sludge sump it is provided with in the upper left corner of tank body, the upper right corner is provided with the rising pipe being connected with settling tank, be provided with on the top of tank body multiple respectively with sludge sump, anoxic pond, the access opening that Aerobic Pond is connected with settling tank, mixed-liquor return device it is provided with between described Aerobic Pond and anoxic pond, it is provided with sludge refluxing apparatus between described settling tank and sludge sump, anaerobism filler it is provided with in described anoxic pond, aerobic filler it is provided with in described Aerobic Pond, aerating apparatus it is provided with bottom it.

2. new A O type integrated sewage treating apparatus according to claim 1, it is characterised in that: it is provided with the inclined tube for filtering-depositing mud in described settling tank.

3. new A O type integrated sewage treating apparatus according to claim 1, it is characterised in that: described tank body adopts glass reinforced plastic to make.

4. new A O type integrated sewage treating apparatus according to claim 1, it is characterised in that: the cross section of described Aerobic Pond is rounded.