CN201268647Y - Small-sized domestic sewage processing system - Google Patents

Abstract

The utility model relates to a small-scale domestic sewage treatment system, which mainly includes a water collection primary sedimentation tank, a multi-purpose regulating tank, an aerobic biological filter, a secondary sedimentation tank and a water storage tank. The multi-purpose regulating tank, the aerobic biological tank, secondary sedimentation tank and water storage tank are connected in turn, the multi-purpose regulating tank adopts the structure of upper part water inlet and middle part water outlet, vertical partition is arranged in the pool, intermittent aerator, sludge scraper and The sludge discharge outlet is provided with an oil slick scraper and an oil slick discharge outlet at the upper part, and a flocculant dosing device is arranged at the top, and an agitator is arranged in the flocculant dosing device. An aerobic filter material is provided in the middle of the aerobic biological filter, and an aerator is provided at the bottom. The utility model has the advantages of compact structure, simple process, convenient installation and use, and is suitable for frequent small-scale sewage discharge in life or production, especially in places far away from municipal pipelines.

Description

Small domestic sewage treatment system

technical field

The utility model relates to a small-scale domestic sewage treatment system, which belongs to the technical field of environmental protection and is suitable for frequent small-scale sewage discharge in life or production, especially places far away from municipal pipelines. .

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 small-scale domestic sewage treatment system, which is suitable for general small-scale sewage discharge sources, and has good treatment effect, compact structure, convenient installation and maintenance, and occupies The land area is small.

The technical scheme of the utility model to achieve the above-mentioned purpose is to include a primary settling tank for water collection, a multi-purpose regulating tank, a flocculation sedimentation tank, an air flotation tank, an aerobic biological filter, a secondary settling tank and a water storage tank. Pool, multi-purpose regulating 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 multi-purpose regulating tank is equipped with a sludge scraper and a sludge discharge outlet, and the upper part An oil slick scraper and an oil slick sewage discharge port are provided, and a mud scraping device and a sewage discharge port are provided at the bottom of the primary settling tank.

The top of the multi-purpose regulating tank can also be provided with a flocculant dosing device, the bottom can also be provided with a gap aerator, the middle part of the aerobic biological filter is provided with an aerobic filter material, and the bottom is provided with an aerator. 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 collected in the multi-purpose regulating pool first, 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, and there is a The flocculant dosing device injects flocculants into the water to strengthen the sedimentation effect and reduce the load on subsequent equipment, and then undergoes a biochemical purification reaction through a high-efficiency aerobic biological filter to decompose the dissolved organic matter in it, and then passes through two The secondary sedimentation removes the sludge and other sediments carried in the water, and the pollutants in the formed effluent are significantly reduced. For general domestic and production sewage with no particularly difficult pollutants and low pollution concentration, this kind of treatment can generally meet the sewage discharge standards and irrigation standards, 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 the structural representation of the utility model.

Detailed ways

Referring to Fig. 1, the utility model provides a small-scale domestic sewage treatment system, which mainly includes a water collection and dust removal tank, a multipurpose adjustment tank 3, an aerobic biological filter tank 5, a secondary sedimentation tank 6 and a water storage tank 7, the multiple Purpose adjustment tank, aerobic biological filter, secondary sedimentation tank and water storage tank are connected in sequence, the bottom of the multi-purpose adjustment tank is provided with sludge scraper and sludge discharge outlet 14, and the upper part is provided with oil slick scraper and oil slick Sewage outlet 4, the middle part of the aerobic biofilter is provided with an aerobic filter material 10, and the bottom is provided with an aerator 11, the water inlet pipe 1 of the multi-purpose adjustment tank is connected to the water collection adjustment tank, the storage The outlet pipe 8 of the pool is the outlet pipe of the system.

An intermittent aerator 12 may also be provided at the bottom of the multi-purpose regulating tank, and sedimentation and aeration are carried out alternately so as to increase the amount of oxygen in the sewage and facilitate subsequent treatment.

A flocculant dosing device 2 may also be provided on the top of the multi-purpose regulating tank, and a stirrer is provided in the flocculant dosing device, so as to inject the flocculant dissolved in water into the sewage to enhance the sedimentation effect.

The multi-purpose regulating pool can adopt the structure of upper water inlet and middle water outlet. Vertical partitions 13 are arranged in the pool, and the incoming water can only flow from the water inlet to the water outlet by bypassing the vertical partitions, so as to improve the effect of sedimentation and floating. .

The injection port of the flocculant dosing device is arranged on the water inlet side of the partition, and the aerator is arranged on the water outlet side of the partition, which is conducive to improving the flocculation and sedimentation effect and improving the floating effect. Effect.

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 provided at the bottom of the pool to provide air and oxygen for aerobic organisms.

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 multi-purpose regulating tank and the secondary sedimentation tank is provided with a submersible sludge pump, the outlet pipes of each submersible sludge pump can be connected to a sludge thickening tank, so that the sludge discharged is concentrated in the sludge The pool is further concentrated.

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 connections between the pools can be connected by pipelines, and the pipelines used for the connections can be provided with pumps and valves for water flow control.

Claims (10)

1. small-sized domestic sewage processing system, it is characterized in that comprising catchment preliminary sedimentation tank, multi-usage equalizing tank, flocculation sedimentation tank, air flotation pool, aerobic biofilter, secondary sedimentation basins and tank, the described preliminary sedimentation tank that catchments, multi-usage equalizing tank, flocculation sedimentation tank, air flotation pool, aerobic biofilter, secondary sedimentation basins are connected successively with tank, described multi-usage equalizing tank bottom is provided with the mud scraper plate and mud sewage draining exit, top are provided with oil slick scraper plate and oil slick sewage draining exit, and the described preliminary sedimentation tank bottom of catchmenting is provided with Scraping device and sewage draining exit.

2. small-sized domestic sewage processing system as claimed in claim 1 is characterized in that described multi-usage equalizing tank bottom also is provided with the intermittent aeration device.

3. small-sized domestic sewage processing system as claimed in claim 2 is characterized in that described multi-usage equalizing tank top also is provided with the flocculation agent balling iron, is provided with agitator in the described flocculation agent balling iron.

4. small-sized domestic sewage processing system as claimed in claim 3 is characterized in that described multi-usage equalizing tank adopts the structure of top water inlet, middle part water outlet, is provided with vertical dividing plate in the pond.

5. small-sized domestic sewage processing system as claimed in claim 4 is characterized in that the dispensing mouth of described flocculation agent balling iron is arranged on the water inlet oral-lateral of described dividing plate, and described aerator is arranged on the water outlet oral-lateral of described dividing plate.

6. as claim 1,2,3,4 or 5 described small-sized domestic sewage processing systems, it is characterized in that described aerobic biofilter middle part is provided with aerobic filtrate, the bottom is provided with aerator.

7. small-sized domestic sewage processing system as claimed in claim 6 is characterized in that the filtrate in the described aerobic biofilter adopts the soft filtrate that is suspended in the pond, is provided with aerator at the bottom of the pond.

8. small-sized domestic sewage processing system as claimed in claim 7 is characterized in that the inner sloping plate deposition structure that adopts of described secondary sedimentation basins, is provided with the sloping plate deposition district.

9. small-sized domestic sewage processing system as claimed in claim 8 is characterized in that being connected sludge pump at the bottom of the pond of described multi-usage equalizing tank, flocculation sedimentation tank and secondary sedimentation basins, and the outlet conduit of each sludge pump is connected in a sludge thickener.

10. small-sized domestic sewage processing system as claimed in claim 9, the outlet conduit that it is characterized in that the submersible pump of described secondary sedimentation basins also is connected in described aerobic biofilter by mud return line, pipe connection is all adopted in connection between described each pond, the pipeline of described connection usefulness is provided with pump and valve, is provided with sterilizing machine above the described secondary sedimentation basins.

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