CN212198901U - Multiphase circulation rural domestic sewage treatment system - Google Patents

Abstract

The utility model discloses a rural domestic sewage treatment system of heterogeneous circulation, the utility model discloses a be equipped with novel imitative grass pigtail formula filler in the oxygen deficiency pond to generate simulation natural pasture and water form, be difficult for receiving and hide mud, the tubulose diameter has the variability during the oxygenating, and is non-clogging, long service life, this filler can improve purification efficiency 70-80% than other fillers, can make the microorganism can full play respective efficiency. Through the design of the circulating reflux structures of the anaerobic tank, the anoxic tank and the aerobic tank, the circulation of solid, liquid and gas in sewage is realized, and the efficient removal of organic matters in the sewage is ensured. The device replaces the sedimentation tank with membrane reactor, reduces area, and is effectual to the separation of mud and water, has reduced the content of aquatic phosphorus again when having guaranteed the biological activity in the aerobic tank, thereby avoids follow-up discharge rivers phosphorus content to exceed standard and cause the water eutrophication to can the environmental protection.

Description

Multiphase circulation rural domestic sewage treatment system

Technical Field

The utility model relates to an environmental protection field, in particular to rural domestic sewage treatment system of heterogeneous circulation.

Background

The rural domestic sewage treatment is to remove and degrade harmful substances and polluted environment components in the domestic sewage for harmless treatment. The rural domestic sewage treatment mainly considers selecting mature and reliable technology which is suitable for rural characteristics and practical sewage treatment application technology. The rural sewage treatment can neutralize the agricultural products according to the actual conditions, thereby achieving the purposes of recycling, environmental protection, degradation and discharge.

However, the existing rural domestic sewage has small water amount, unstable flow and unqualified sewage treatment quality, and easily causes environmental pollution.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a heterogeneous circulation rural domestic sewage treatment system, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multiphase circulating rural domestic sewage treatment system comprises: the sump pit, its characterized in that: the water collecting well is larger in well diameter and used for collecting and storing underground water or leaked water, the water collecting well passes through the grid well through a pipeline, the grid well subsequently enters the sewage adjusting tank through the pipeline, sewage is lifted to the biochemical tank through a water pump in the adjusting tank, the biochemical tank comprises an anaerobic tank, an anoxic tank and an aerobic tank, the adjusting tank lifts the sewage to the anaerobic tank through the water pump, the anaerobic tank removes organic matters in the wastewater under the action of anaerobic bacteria, the anaerobic tank is subsequently connected with the anoxic tank through the pipeline, the anoxic tank is connected with the aerobic tank through the pipeline, the sewage in the aerobic tank contains active sludge, and the organic matters in the wastewater are further removed;

the biological phosphorus removal agent is injected into the aerobic tank, so that the activity of organisms in the aerobic tank is guaranteed, the content of phosphorus in water is reduced, and the eutrophication of a water body caused by the fact that the phosphorus content of subsequent discharged water flows exceeds the standard is avoided, so that the environment is protected.

Preferably, the grid well is 3mm mechanical grid structure wire net at interval, filters the sewage that gets into through the grid well, avoids causing subsequent jam.

Preferably, be equipped with liquid level control system in the equalizing basin, liquid level control system passes through the sensor and transmits the liquid level to the treater in real time, and when the liquid level height exceeded the setting value, the water pump operation in the equalizing basin was opened, with sewage discharge, the automatic operation of water pump in the automatic control equalizing basin, sewage quality and water yield were adjusted in the equalizing basin.

Preferably, the novel straw-braid-like filler is filled in the anoxic tank, and the anoxic tank is of a structure which is not aerated or aerated but has low pollutant content and is suitable for decomposition of aerobic microorganisms.

Preferably, sewage is lifted to an anaerobic tank through a water pump in the adjusting tank, an anoxic tank is connected with the anaerobic tank through a pipeline, and finally enters the aerobic tank, the aerobic tank is connected to the anoxic tank in a backflow mode, the anoxic tank is connected to the anaerobic tank in a backflow mode to form a backflow system of sewage, repeated circulating decomposition and treatment can be carried out on the sewage through the combination of the anaerobic tank, the anoxic tank and the aerobic tank, solid-liquid-gas circulation in the sewage is achieved, efficient removal of organic matters in the sewage is guaranteed, and the quality of sewage purification is improved.

Preferably, the membrane reactor discharges sludge into a sludge collecting tank, sludge generated after water purification is recycled and dried through the sludge collecting tank, the main components of the water purification sludge are alumina, ferric oxide and the like, the content of harmful substances is low, the water purification sludge can be recycled and made into a coagulant, the coagulant is applied to the treatment of chemical wastewater, the reasonable utilization of resources is promoted, pollution is reduced, clear water is generated after the treated water flow passes through the membrane reactor and is filtered by the membrane reactor, the clear water is stored in a clear water tank, the subsequent treatment and detection of the water flow are carried out, and the quality of the outlet water is ensured to reach the standard.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the novel straw-braid-like filler is filled in the anoxic pond, the filler has the advantages of hydrophilicity, lipophilicity, good cutting effect on bubbles, oxygen storage function, strong adsorption capacity, quick update of a biological membrane on the filler, high biological activity and high mass transfer efficiency, so that the simulated natural aquatic weed form is generated, sludge is not easy to be stored, the tubular diameter has variability during oxygenation, no blockage exists, the service life is long, the filler can improve the purification efficiency by 70-80% compared with other fillers, and the microbes can fully exert respective efficiency.

2. Through the design of the circulation reflux structure of the anaerobic tank, the anoxic tank and the aerobic tank, the water quality of the discharged water is guaranteed to form a reflux system of the sewage, the sewage can be decomposed and treated in a repeated cycle, the solid, liquid and gas circulation in the sewage is realized, the efficient removal of organic matters in the sewage is guaranteed, and the quality of sewage purification is improved.

3. The device replaces the sedimentation tank with the membrane reactor, reduces the floor area, has good separation effect on mud and water, reduces the content of phosphorus in water while ensuring the biological activity in the aerobic tank, and avoids the subsequent discharge of water flow with the phosphorus content exceeding the standard to cause water body nutrition, thereby protecting the environment.

Drawings

FIG. 1 is a flow chart of the multiphase circulation rural domestic sewage treatment system of the utility model.

In the figure: 1. a water collecting well; 2. a grid well; 3. a regulating tank; 4. an anaerobic tank; 5. an anoxic tank; 6. an aerobic tank; 7. a biological phosphorus removal agent; 8. a membrane reactor; 9. a sludge collection tank; 10. a clean water tank.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1, a multiphase cycle rural domestic sewage treatment system comprises: the water collecting well 1 is large in well diameter and used for collecting and storing underground water or leaked water, the water collecting well 1 passes through the grid well 2 through a pipeline, the grid well 2 is a mechanical grid structure steel wire mesh with 3mm intervals, entered sewage is filtered through the grid well 2, subsequent blockage is avoided, the grid well 2 subsequently enters the sewage adjusting pool 3 through the pipeline, a liquid level control system is arranged in the adjusting pool 3, the liquid level control system transmits the liquid level to a processor in real time through a sensor, when the liquid level height exceeds a set value, a water pump in the adjusting pool 3 is started to operate, the sewage is discharged, the automatic operation of the water pump in the adjusting pool is automatically controlled, and the water quality and the water quantity of the sewage are adjusted in the adjusting pool;

the sewage is lifted to a biochemical pool by a water pump in an adjusting pool 3, the biochemical pool comprises an anaerobic pool 4, an anoxic pool 5 and an aerobic pool 6, the adjusting pool 3 lifts the sewage to the anaerobic pool 4 by the water pump, the anaerobic pool 4 has the function of enabling activated sludge to breathe aerobically and further decomposing organic matters into inorganic matters, pollutants can be effectively removed, the anaerobic pool 4 is connected with the anoxic pool 5 by a pipeline subsequently, a novel straw-braid-like filler is arranged in the anoxic pool 5, the filler has the advantages of hydrophilicity, lipophilicity, good cutting effect on bubbles, oxygen storage function, strong adsorption capacity, faster updating of a biomembrane on the filler, high biological activity and high mass transfer efficiency, thereby generating a simulated natural aquatic weed shape and sludge which is difficult to store, the tubular diameter has variability during oxygenation, no blockage and long service life, and the purification efficiency of the filler can be improved by 70-80% compared with other fillers, the anaerobic tank 5 is connected with the aerobic tank 6 through a pipeline, sewage in the aerobic tank 6 contains activated sludge, anaerobic bacteria are arranged in the activated sludge, and organic matters in the wastewater are removed under the action of the anaerobic bacteria;

sewage promotes anaerobism pond 4 through the inside water pump of equalizing basin 3, there is oxygen deficiency pond 5 through the pipe connection, get into in the good oxygen pond 6 at last, in addition, in the good oxygen pond 6 backward flow is connected to the oxygen deficiency pond 5, in 5 backward flow connection in the oxygen deficiency pond 4, form the reflux system of sewage, can carry out recirculation's decomposition and processing to sewage through anaerobism pond 4, the combination of oxygen deficiency 5 and good oxygen pond 6, the realization is with the solid in sewage, liquid, the gas circulation, the high-efficient removal of sewage organic matter has been guaranteed, promote sewage purification's quality.

The biological phosphorus removal agent 7 is injected into the aerobic tank 6, so that the activity of the organisms in the aerobic tank 6 is ensured, the phosphorus content in water is reduced, the subsequent discharged water flow is prevented from exceeding the standard so as to cause water body nutrition, the environment can be protected, the aerobic tank 6 enters the membrane reactor 8 through the water outlet pipe, the membrane reactor 8 filters sludge in water conveyed by the aerobic tank 6, the membrane reactor 8 discharges the sludge into the sludge collection tank 9, the sludge generated after water purification is recycled and dried through the sludge collection tank 9, the main components of the water purification sludge are aluminum oxide, ferric oxide and the like, the content of harmful substances is low, the water purification sludge can be recycled and prepared into a coagulant, the coagulant is applied to the treatment of chemical wastewater, the reasonable utilization of resources is promoted, the pollution is reduced, the treated water flow passes through the membrane reactor 8 to filter the sludge so as to generate clear water, and storing the water in a clean water tank 10 for subsequent treatment and detection of water flow to ensure that the quality of the outlet water reaches the standard.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides a rural domestic sewage treatment system of heterogeneous circulation, includes sump pit (1), its characterized in that: the water collecting well (1) passes through the grid well (2) through a pipeline, the grid well (2) subsequently enters the sewage adjusting tank (3) through the pipeline, sewage is lifted to the biochemical tank through a water pump in the adjusting tank (3), the biochemical tank comprises an anaerobic tank (4), an anoxic tank (5) and an aerobic tank (6), the adjusting tank (3) lifts the sewage to the anaerobic tank (4) through the water pump, the anaerobic tank (4) is subsequently connected with the anoxic tank (5) through the pipeline, and the anoxic tank (5) is connected with the aerobic tank (6) through the pipeline; the biological phosphorus removal agent (7) is injected into the aerobic tank (6), the effluent of the aerobic tank (6) enters the membrane reactor (8) through a water pipe, a liquid level control system is arranged in the adjusting tank (3), and the liquid level is transmitted to the processor in real time through a sensor by the liquid level control system.

2. The multiphase circulating rural domestic sewage treatment system according to claim 1, wherein: the grid well (2) is a mechanical grid structure steel wire mesh with 3mm intervals.

3. The multiphase circulating rural domestic sewage treatment system according to claim 1, wherein: the novel straw braid-like filler is filled in the anoxic tank (5), the sewage of the aerobic tank (6) contains activated sludge, and the anoxic tank (5) is of a structure which is not aerated or is not aerated but has low pollutant content.

4. The multiphase circulating rural domestic sewage treatment system according to claim 1, wherein: the sewage is lifted to an anaerobic tank (4) through a water pump in the regulating tank (3), is connected with an anoxic tank (5) through a pipeline and finally enters an aerobic tank (6), in addition, the aerobic tank (6) is connected to the anoxic tank (5) in a backflow mode, and the anoxic tank (5) is connected to the anaerobic tank (4) in a backflow mode.

5. The multiphase circulating rural domestic sewage treatment system according to claim 1, wherein: the membrane reactor (8) discharges sludge into a sludge collecting tank (9), and the aerobic tank (6) filters the sludge from the water flow after the preorder treatment through the membrane reactor (8) to generate clear water which is stored in a clear water tank (10).

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