CN201268648Y - Multifunctional universal sewage treatment system - Google Patents

Abstract

The utility model relates to a multifunctional universal sewage treatment system, which mainly includes a water collecting primary sedimentation tank, a multifunctional regulating tank, a flocculation sedimentation tank, an air flotation tank, an aerobic biological filter, a secondary sedimentation tank and a water storage tank. The bottom of the functional adjustment tank is equipped with gap aerator, sludge scraper and sludge discharge outlet, and the upper part is equipped with oil slick scraper and oil slick discharge outlet. The flocculation sedimentation tank, air flotation tank, aerobic biological filter, The secondary sedimentation tank and the water storage tank are connected sequentially. The upper part of the flocculation sedimentation tank is provided with a flocculant dosing device, the bottom of the air flotation tank is provided with an air flotation air supply device, and the upper part is provided with a scum scraper mechanism. The aerobic biological An aerobic filter material is provided in the middle of the filter tank, an aerator is provided at the bottom, and a mud scraping device and a sewage outlet are provided at the bottom of the primary sedimentation tank. The overall structure of the system is simple and compact, reasonable in structure, convenient in maintenance and strong in versatility. It is suitable for small-scale sewage discharge in life or production, especially in places far away from municipal pipelines.

Description

Multifunctional general sewage treatment system

technical field

The utility model relates to a multifunctional universal sewage treatment system, which belongs to the technical field of environmental protection.

Background technique

For small-scale sewage discharges that often occur in life or production, especially in places far away from municipal pipes, it is necessary to set up a small sewage treatment system for sewage treatment to make it meet the discharge standards for on-site discharge. This type of small-scale sewage Due to the small processing capacity of the treatment system, the investment that can be borne is not large. Therefore, a finished product with wide adaptability and relatively low cost is required to produce a unified finished product in the factory without independent design for various specific sewage properties. and engineering construction. In view of the fact that such pollutants usually exist in sewage: floating substances such as oil, sediments such as sand and dust, suspended substances such as colloids, microorganisms and BOD and COD composed of organic pollutants, it is necessary for this general equipment to have the ability to eliminate these pollutants. ability.

Utility model content

In order to overcome the above-mentioned defects of the prior art, the utility model provides a multifunctional universal sewage treatment system, which is suitable for general small-scale sewage discharge sources, and has good treatment effect, compact structure, and convenient installation and maintenance. Small footprint.

The technical solution of the utility model to achieve the above purpose is: a multifunctional universal sewage treatment system, including a water collection primary sedimentation tank, a multifunctional regulating tank, a flocculation sedimentation tank, an air flotation tank, an aerobic biological filter, a secondary Sedimentation tank and water storage tank, the multifunctional adjustment tank, flocculation sedimentation tank, air flotation tank, aerobic biological filter, secondary sedimentation tank and water storage tank are connected in sequence, and the bottom of the multifunctional adjustment tank is equipped with sludge scraper and The upper part of the sludge discharge port is provided with an oil slick scraper and an oil slick discharge port, and the bottom of the primary settling tank is provided with a mud scraping device and a sewage discharge port.

The upper part of the flocculation sedimentation tank is provided with a flocculant dosing device, the bottom of the air flotation tank is provided with an air flotation air supply device, the upper part is provided with a scum scraper mechanism, and the middle part of the aerobic biological filter is provided with an aerobic filter material. An aerator is arranged at the bottom, the water inlet pipe of the flocculation sedimentation tank is the water inlet pipe of the system, and the water outlet pipe of the water storage tank is the water outlet pipe of the system.

Because the overall treatment process designed by the utility model is reasonable, the water is firstly collected in the multi-functional regulating pool, so that the subsequent process is stable, and at the same time, the sediment and floating objects that are naturally separated and treated are scraped off during the water collection process, which reduces the subsequent equipment. The load, and then through chemical precipitation, the precipitable substances that have not settled in the multi-functional regulating tank are greatly reduced by flocculation and precipitation. After such two separations, more than 60% of the organic pollution in the sewage can be eliminated and A larger proportion of solid particles, and then use air flotation to remove the remaining oil and other similar pollutants in the water, and then undergo a biochemical purification reaction through an efficient aerobic biological filter to decompose the dissolved organic matter, and then After secondary sedimentation, the sludge and other sediments carried in the water are removed, and the pollutants in the formed effluent are significantly reduced. For general domestic and production sewage without particularly difficult pollutants and excessively high pollution concentrations, this After treatment, it can meet the sewage discharge standard and irrigation standard, and can be discharged on site or used for landscape water. The overall structure of the system is simple and compact, reasonable in structure, convenient in maintenance and strong in versatility. It is suitable for small-scale sewage discharge in life or production, especially in places far away from municipal pipelines.

Description of drawings

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

Detailed ways

Referring to Fig. 1, the utility model provides a multifunctional universal sewage treatment system, which mainly includes a water collecting primary sedimentation tank, a multifunctional regulating tank 18, a flocculation sedimentation tank 2, an air flotation tank 4, an aerobic biological filter tank 5, and a secondary Sedimentation tank 6 and water storage tank 7, described multifunctional adjustment tank, flocculation sedimentation tank, air flotation tank, aerobic biological filter, secondary sedimentation tank and water storage tank are connected successively, and the bottom of described multifunctional adjustment tank is provided with sludge scraper Plate and sludge sewage outlet 15, the upper part is provided with oil slick scraper and oil slick sewage outlet 17, the upper part of the flocculation sedimentation tank is provided with flocculant dosing device, the bottom of the air flotation tank is provided with air flotation air supply device 12, the upper part A scum scraper mechanism is provided, an aerobic filter material 10 is provided in the middle of the aerobic biological filter, and an aerator 11 is provided at the bottom, and the water inlet pipe 16 of the multifunctional adjustment tank is the water inlet pipe of the system, so The outlet pipe 8 of the reservoir is the outlet pipe of the system.

The bottom plate of the multifunctional regulating tank can also be provided with an intermittent aerator 14, and the sedimentation and aeration are carried out alternately, so as to increase the oxygen content in the sewage and facilitate the subsequent treatment.

The multifunctional adjustment pool can adopt the structure of water inlet in the middle and upper part and water outlet in the middle and lower part. There are vertical partitions in the pool, and the water needs to bypass the vertical partitions to flow from the water inlet to the water outlet, so as to improve sedimentation and flotation. Effect.

The inside of the flocculation-sedimentation tank can adopt a sloping plate sedimentation structure, and a sloping plate sedimentation area is provided. A dosing space with an agitator is provided in front of the sloping plate sedimentation area, and a flocculant dosing device is provided above the dosing space. , the dosing device continuously injects flocculant into the dosing space according to the water flow rate, and after being stirred by the agitator, it is fully mixed in the sewage, coagulates with organic particles and other organic molecules in the sewage, and then flows into the sedimentation area of the inclined plate for precipitation. The box has high sedimentation efficiency and small volume, and by adding flocculant, more than 30% of BOD and COD in high-concentration sewage are removed, reducing the pollution load of subsequent biochemical treatment.

The bottom of the flocculation sedimentation tank may be provided with a sludge discharge port 13 for discharging sludge under certain conditions. A submersible sludge pump can also be installed at the bottom of the flocculation sedimentation tank to regularly pump out the sludge and send it to the sludge concentration tank for concentration. The concentrated sludge is further filtered and pressed into mud cakes for transportation to special treatment sites.

The air flotation tank adopts the principle of air flotation to use the oil and pollutants that can carry bubbles to float up after aeration, and the gas injected by the air flotation air supply device at the bottom of the tank is combined with the pollutants in the water to form a shell with bubbles and float up. After reaching the surface of the air flotation pool, it accumulates, and when it accumulates to a certain thickness, it is scraped to the scum discharge port 3 on one side of the pool by the scraper and discharged.

The filter material in the aerobic biological filter can be a soft filter material suspended in the tank, so as to improve the purification efficiency and facilitate cleaning and maintenance. An aerator is installed at the bottom of the pool to provide air and oxygen for aerobic organisms, and the air flotation aeration process in the air flotation pool is also conducive to increasing the oxygen content in the water.

The interior of the secondary sedimentation tank can adopt a slanted plate sedimentation structure, and a slanted plate sedimentation area is provided to obtain high sedimentation efficiency and reduce volume. The bottom of the secondary sedimentation tank may also be provided with a sludge discharge port 9 for discharging sludge under certain conditions. A submersible sludge pump can also be installed at the bottom of the secondary sedimentation tank to regularly pump out the sludge and send it to the sludge concentration tank for concentration. The concentrated sludge is further filtered and pressed into mud cakes for transportation to special treatment sites.

When the bottom of the flocculation sedimentation tank and the secondary sedimentation tank is provided with a submersible sludge pump, the outlet pipelines of each submersible sludge pump can be connected to a sludge thickening tank, so that the sludge that is discharged is in the sludge thickening tank Concentrate further.

The outlet pipe of the submersible pump of the secondary sedimentation tank is also connected to the aerobic biofilter through a sludge return pipe, so as to return the sludge and improve the treatment effect of the aerobic biofilter.

A disinfection machine may be provided above the secondary sedimentation tank to sterilize the water in the secondary sedimentation tank and prevent bacteria and other microorganisms from flooding the water storage tank. One of the preferred sanitizers is an ozone machine that produces ozone, which inactivates bacteria and other microorganisms by dissolving ozone in water.

The connection between the pools can be connected by pipeline 1, and the pipeline for connection can be provided with pumps and valves for water flow control.

Claims (10)

1. A multifunctional general sewage treatment system is characterized in that it mainly comprises a primary sedimentation tank, a multifunctional regulating tank, a flocculation sedimentation tank, an air flotation tank, an aerobic biological filter, a secondary sedimentation tank and a water storage tank connected successively , the multifunctional adjustment tank, flocculation sedimentation tank, air flotation tank, aerobic biological filter, secondary sedimentation tank and water storage tank are connected in sequence, and the bottom of the multifunctional adjustment tank is provided with a sludge scraper and a sludge discharge outlet, The upper part is provided with an oil slick scraper and an oil slick sewage outlet, and the bottom of the water collecting primary settling tank is provided with a mud scraping device and a sewage outlet. 2. The multifunctional universal sewage treatment system as claimed in claim 1, characterized in that the multifunctional regulating pool adopts a structure in which water enters the middle and upper parts and the middle and lower parts discharge water, and the bottom is also provided with an interstitial aerator. There are vertical partitions. 3. The multifunctional universal sewage treatment system as claimed in claim 1, characterized in that the upper part of the flocculation sedimentation tank is provided with a flocculant dosing device, the bottom of the air flotation tank is provided with an air flotation gas supply device, and the upper part is provided with scum scraper mechanism. 4. The multifunctional universal sewage treatment system according to claim 1, characterized in that an aerobic filter material is provided in the middle of the aerobic biological filter, and an aerator is provided at the bottom. 5. The multifunctional universal sewage treatment system as claimed in claim 4, characterized in that the filter material in the aerobic biological filter adopts soft filter material suspended in the pool, and an aerator is arranged at the bottom of the pool. 6. The multifunctional universal sewage treatment system according to claim 1, characterized in that the interior of the flocculation and sedimentation tank adopts a sloping plate sedimentation structure, and a sloping plate sedimentation area is provided. 7. The multifunctional universal sewage treatment system according to claim 6, characterized in that a dosing space with an agitator is provided in front of the flocculation-sedimentation tank, and a flocculant dosing device is provided above the dosing space. 8. The multifunctional universal sewage treatment system according to claim 1, characterized in that the interior of the secondary sedimentation tank adopts a slanted plate sedimentation structure, and a slanted plate sedimentation area is provided. 9. The multifunctional universal sewage treatment system as claimed in claim 1, 2, 3, 4, 5, 6, 7 or 8, characterized in that the pools of the multifunctional adjustment tank, flocculation sedimentation tank and secondary sedimentation tank The bottom is connected to the sludge pump, and the outlet pipe of each sludge pump is connected to a sludge thickening tank. 10. The multifunctional universal sewage treatment system as claimed in claim 9, wherein the outlet pipeline of the submersible pump of the secondary sedimentation tank is also connected to the aerobic biofilter through a sludge return pipe, and the The connections between the pools are all connected by pipelines, the pipelines used for the connections are provided with pumps and valves, and the secondary sedimentation tanks are provided with disinfection machines.

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