CN101746922B - Garden domestic sewage treatment and reuse system and sewage treatment method - Google Patents

Abstract

The invention relates to a system for treating and reusing courtyard domestic sewage and a method for treating sewage. The system includes a grid, an oil separation regulating tank, a sequencing batch biofilm reactor, a filter tank and an ultraviolet sterilizer. The grid is placed at the water inlet of the sedimentation chamber of the oil-separated regulating tank; the water outlet of the sewage chamber of the oil-separated regulating tank is connected with the water inlet of the sequencing batch biofilm reactor through a pipeline; the sequencing batch biofilm reaction The water outlet pipeline of the filter is connected with the water inlet of the filter tank; the water outlet of the filter tank is connected with the water storage tank installed with the ultraviolet sterilizer through the pipeline. The grid intercepts solid waste; the oil separation adjustment tank separates oily pollutants from the water; the sequencing batch biofilm reactor can effectively remove organic pollutants, ammonia nitrogen, total suspended solids, etc. in sewage; the ultraviolet sterilizer further removes Various bacteria in water. The system of the present invention is provided with a float type water decanter to realize steady state water discharge.

Description

Garden domestic sewage treatment and reuse system and sewage treatment method

technical field

The invention belongs to an integrated technology for treating courtyard domestic sewage by using physical, chemical and biological technologies in environmental engineering methods, and in particular relates to a courtyard domestic sewage treatment and reuse system and a method for treating sewage.

Background technique

Traditional sewage treatment often adopts a centralized treatment method, that is, sewage from different sources such as households, shops, and factories is mixed together, and transported to a large-scale sewage treatment plant through a drainage network for unified treatment. For courtyard sewage that is far away from the municipal drainage pipe network, the cost of constructing the drainage collection pipe network is relatively high. On the other hand, my country is an area lacking in water resources, and sewage reuse is one of the economically effective ways to alleviate the contradiction of water shortage. In-situ treatment of courtyard domestic sewage and nearby reuse can not only make comprehensive utilization of sewage, but also minimize the cost of sewage treatment.

The decentralized sewage treatment mode has been widely promoted and applied all over the world due to its flexible layout, simple construction and convenient management. At present, domestic and foreign sewage decentralized treatment technologies can be classified into three categories in principle: the first category is to use the principles of soil filtration, plant absorption and microbial decomposition, which are commonly called ecological treatment systems. Commonly used are: underground soil infiltration purification system, wetland treatment system (artificial and natural), etc., due to the large area, it is generally suitable for small towns and rural areas, such as the literature "different depth artificial compound ecological bed treatment of rural domestic sewage Comparison of [J] "; Environmental Science. 2003, 24 (5). The second category is an anaerobic treatment system represented by three-format septic tanks, biogas digesters and upflow anaerobic sludge beds, which are mainly used to treat high-concentration organic sewage. The disadvantage of the upflow anaerobic sludge bed is that the amount of sludge is large, so that the sludge is in a fluidized state, which requires a large flow rate and high maintenance and management requirements. ; Journal of Meteorology and Environment. 2007, 23(2): 34-37. The third type is an aerobic biological treatment system that oxygenates sewage through power. This type of treatment system has compact equipment, good pollutant removal effects, and a wide range of applications, and can be used for the treatment of various types of sewage. And according to the different requirements for the effluent, it can be combined with physical and chemical methods to make the effluent meet the reuse standard, which has a good water-saving effect for areas lacking water resources. Commonly used are: ordinary activated sludge method, AO method, biological turntable and oxidation ditch method.

The SBR method is a typical aerobic biological process, which is widely used at present. It is characterized by stable operation, good effluent quality, high removal rate of organic matter, nitrogen, and phosphorus, and the reactor has a compact structure, simple process, high degree of automation, and less land occupation. It is widely used in domestic sewage treatment and reuse systems in hotels, restaurants and some small residential areas. However, it is essentially an activated sludge method, and sludge bulking is prone to occur when it is not operated properly, and it has high professional requirements for operators.

Contents of the invention

One of the purposes of the present invention is to develop a garden domestic sewage treatment and reuse system with strong impact resistance, small floor space, and simple operation and maintenance, so as to provide an economical and convenient way for decentralized treatment and reuse of sewage.

Another object of the present invention is to provide a method for treating sewage using a garden domestic sewage treatment and reuse system.

The invention integrates an oil-separating regulating tank, a sequencing batch biofilm reactor, filtration and ultraviolet disinfection into an environment-friendly treatment and reuse technology for domestic sewage in courtyards. The sequence batch type biofilm reactor in the system of the present invention belongs to the biofilm method, but the filler setting, drainage equipment and operation mode are improved to make it produce a good film-hanging effect, and at the same time, the float-type decanter ensures that the effluent water flow is stable, The supernatant can be discharged from the sequencing batch biofilm reactor, and the intermittent operation mode reduces energy consumption and saves operating costs.

The oil-separating regulating tank in the system of the present invention removes most of the solid suspended matter, and at the same time separates the grease pollutants from the sewage, and regulates the water quality; utilizes the biofilm formed on the filler in the sequencing batch biofilm reactor to treat the sewage organic pollutants, and remove ammonia nitrogen and total suspended solids at the same time; use the filtration effect of the filter material in the filter tank to further remove solid particles in the sewage and clarify the water quality; use the ultraviolet sterilizer to kill pathogenic microorganisms and bacteria in the water, and deeply purify the water quality , so that the effluent can meet different types of reuse requirements. This not only prevents the sewage from causing environmental pollution, but also realizes the reuse of sewage and saves water resources.

The garden domestic sewage treatment and reuse system of the present invention includes a grid, a tank body similar to an oil-separated regulating tank of a water storage tank, a sequencing batch biofilm reactor whose main body is a container, a filter tank and an ultraviolet sterilizer, etc.; See Figure 1.

There are triangular overflow weirs and partitions in the oil-separating regulating tank; a detachable dividing plate divides the oil-separating regulating tank into two independent front sedimentation chambers and rear sewage chambers. There is a triangular overflow weir above the partition, and there is an oil discharge port at the triangular overflow weir; the front sedimentation chamber and the rear sewage chamber communicate through the opening on the partition, and the sewage enters the rear sewage chamber from the front sedimentation chamber through the opening; A water inlet is opened on the wall of the sedimentation chamber, and a water outlet is opened on the wall of the sewage chamber.

The sequencing batch biofilm reactor includes a slideway, an upper filler frame, a lower filler frame, a float type decanter, and a perforated aeration tube, and the structure can be seen in Figs. 2-4.

On the upper part of the wall of the sequencing batch biofilm reactor, an upper packing frame is installed, and a lower packing frame is installed at the bottom, and the area between the upper packing frame and the lower packing frame is the packing area; the sequencing batch biofilm reaction in the packing area There is a water outlet on the wall of the device (the water outlet can be provided with multiple according to the water output); an overflow port is opened on the wall of the sequence batch biofilm reactor above the upper packing frame; in the sequence batch biofilm reaction The sludge area between the bottom of the reactor and the lower packing frame is equipped with a perforated aeration pipe connected to the external aeration equipment of the sequencing batch biofilm reactor; between the perforated aeration pipe and the lower packing frame A water inlet is opened on the wall of the membrane reactor, and a sludge discharge port is provided at the bottom of the sequencing batch biofilm reactor; on both sides of the reactor.

There is a space in the middle of the packing area to enable the float decanter to move normally in the packing area.

The structure of the floating ball decanter can be seen in Fig. 5 and Fig. 6, and it is constituted to be provided with two floating balls (such as plastic floating balls) above a concave overflow tank, and the two floating balls pass through respectively Connectors (such as iron wire, etc.) are connected to the concave overflow tank below, and the supporting columns on both sides below the concave overflow tank are fixedly connected to the concave overflow tank, and the other ends of the supporting columns on both sides are respectively embedded in the batch type bio The slideway on the two side walls of the membrane reactor; the concave overflow tank communicates with the water outlet on the wall of the sequencing batch biofilm reactor through a hose.

There are filter material, perforated plate (with small holes), backwash pipe, etc. in the filter tank; With filter material, there is a water inlet and overflow port on the filter tank wall above the filter area, and a water outlet on the filter tank wall in the lower catchment area; the backwash pipe connected with the backwash pump outside the filter tank located below a catchment area;

The grid is placed at the water inlet of the sedimentation chamber of the oil-separated regulating tank; the water outlet of the sewage chamber of the oil-separated regulating tank is connected with the water inlet of the sequencing batch biofilm reactor through a pipeline; the sequencing batch biofilm reaction The water outlet pipeline of the filter is connected with the water inlet of the filter tank; the water outlet of the filter tank is connected with the water storage tank installed with the ultraviolet sterilizer through the pipeline.

The opening on the partition is located below the partition and close to the bottom of the oil-separating regulating tank, and there are more than one opening; a connecting pipe can be further installed at the opening on the partition.

The water outlet opened on the wall of the sewage chamber is located above the sewage chamber.

The sludge zone is in the shape of an inverted trapezoid.

The filler area is filled with braided curtain-type fiber fillers, the upper and lower sides of which can be connected in series with iron rods respectively, and fixed on the upper filler frame and the lower filler frame respectively.

The slideway is a long groove, which ensures that the support columns on both sides of the float decanter can be embedded in the groove and slide smoothly. Under the action of buoyancy, the float decanter slides up and down along the slideway to realize automatic Drain and ensure that as little sludge as possible is removed.

The filter material is quartz sand filter material, and the sewage enters the filter tank through the water inlet by falling water.

The top of the sequencing batch biofilm reactor is provided with a cover, which can be slid and opened for easy maintenance.

The present invention applies the method for treating sewage in the courtyard domestic sewage treatment and reuse system:

The sewage first passes through the grid, and the solid waste is intercepted and collected in the grid (the grid is cleaned regularly); the sewage then enters the oil-separated regulating tank, and after standing and settling in the sedimentation chamber of the oil-separated regulating tank, The solid particles with larger particle size are removed, and the grease and sewage are separated at the same time. The grease is discharged through the oil discharge port at the triangular overflow weir, and the sewage enters the sewage chamber through the opening below the partition; the water pump is turned on to discharge the sewage The sewage in the chamber is sent to the sequencing batch biofilm reactor, the water pump is turned off, the aeration equipment is started, oxygen is provided through the perforated aeration pipe, and the biofilm formed on the filler (generated by itself in the presence of sewage and oxygen) is used for degradation. Organic pollutants in sewage, ammonia nitrogen and total suspended solids are removed at the same time, the aeration is stopped, the sewage is left to settle in the sequencing batch biofilm reactor; the electric valve is opened, and the sewage supernatant is discharged through the float decanter Batch biofilm reactor, until the liquid level reaches the water outlet, close the electric valve, and the drainage stops; the discharged sewage falls into the filter tank under the action of gravity, and the filter material is used to continue to filter the total suspended solids, the sewage is further purified, and the diving is started The pump transports the filtered sewage to the storage tank equipped with an ultraviolet sterilizer. The pathogenic microorganisms and bacteria in the sewage are killed after ultraviolet disinfection, and the treated water can be reused. For example, the water after ultraviolet disinfection treatment can be used for toilet flushing and greening water. Perform periodic repeated operations according to the above sewage treatment method to treat all sewage.

After the filter tank is used for a certain period of time, the filter tank should be backwashed regularly. When backwashing, close the water inlet electric valve and the water outlet submersible pump, turn on the backwash pump, send clean water from the bottom of the perforated plate along the backwash pipe to the filter area, rinse the filter material, turn off the backwash pump, and the backwash process is over.

The garden domestic sewage treatment and reuse system of the present invention has the following advantages:

1. Integrate biological treatment technology and physical and chemical treatment technology to realize the combination of sewage treatment and reuse; use sequencing batch biofilm reactor as the main body of decentralized sewage treatment, supplemented by filter tank with quartz sand as filter material, use The ultraviolet disinfection unit further treats the effluent from the filter tank, and the treated water can be reused for flushing toilets and greening water, saving water resources.

2. The floating ball decanter uses the buoyancy of water as power to discharge the sewage supernatant, which not only saves power consumption, realizes automatic drainage, but also ensures that the discharged water is the supernatant, preventing the sludge from being taken away by the effluent .

3. Using the sequence batch biofilm method as the core process of biological treatment, compared with the traditional SBR method (activated sludge method), it reduces the sludge discharge operation, avoids the occurrence of sludge bulking, and makes operation and maintenance more convenient ,Simple.

4. The sequencing batch biofilm reactor in the present invention adopts the operation mode of intermittent aeration, and the position of the water outlet can be adjusted; it not only saves energy consumption, reduces operation and maintenance costs, but also can match different processing scales.

5. The garden domestic sewage treatment and reuse system of the present invention has good effluent quality and automatic operation control. It is especially suitable for the treatment and reuse of courtyard domestic sewage. It is suitable for popularization and use in areas lacking water resources and has broad application prospects.

The garden domestic sewage treatment and reuse system and sewage treatment method of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1. Schematic diagram of the garden domestic sewage treatment and reuse system of the present invention.

Fig. 2. Schematic diagram of the longitudinal section of the sequencing batch biofilm reactor in the courtyard domestic sewage treatment and reuse system of the present invention.

Fig. 3. Schematic diagram of the side section of the sequencing batch biofilm reactor in the courtyard domestic sewage treatment and reuse system of the present invention.

Fig. 4. A schematic plan view of the sequencing batch biofilm reactor in the courtyard domestic sewage treatment and reuse system of the present invention.

Fig. 5. Schematic diagram of the longitudinal section of the floating ball decanter in the garden domestic sewage treatment and recycling system of the present invention.

Fig. 6. Schematic diagram of the side section of the floating ball decanter in the courtyard domestic sewage treatment and recycling system of the present invention.

reference sign

I. Grid II. Oil separation regulating tank III. Sequencing batch biofilm reactor

IV. Filter tank V. UV sterilizer

1. Water inlet 2, 3, 4. Water outlet 5. Perforated aeration pipe

6. Slideway 7. Upper filler frame 8. Lower filler frame

9. Mud discharge pipe 10. Overflow port 11. Cover

12. Mud outlet 13. Plastic floating ball 14. Support column

15. Overflow tank

Detailed ways

Please see Figure 1. The courtyard domestic sewage treatment and reuse system includes grid I, the tank body is similar to the oil-separated regulating tank II of the storage tank, the main body is a cuboid empty box, and the bottom is an inverted trapezoidal sequencing batch biofilm Reactor III, filter tank IV and water storage tank with UV sterilizer V installed.

A detachable partition divides the oil-separating regulating tank into two independent front sedimentation chambers and rear sewage chambers. A triangular overflow weir is arranged above the partition on one side of the sedimentation chamber, and a drain is arranged at the triangular overflow weir. The oil port and the oil discharge port can be connected with the municipal drainage pipe network through the pipeline; there is an opening connecting the front sedimentation chamber and the rear sewage chamber under the partition near the bottom of the oil separation regulating tank, and the sewage passes through the opening. The sedimentation chamber enters the rear sewage chamber; a water inlet is opened on the wall of the sedimentation chamber, and a water outlet is opened on the wall above the sewage chamber.

Please refer to Figures 2-4. The upper part of the wall of the sequencing batch biofilm reactor with cover 11 at the top is equipped with an upper filler frame 7, and the lower part is equipped with a lower filler frame 8, and the area between the upper filler frame and the lower filler frame is a filler area. The area is filled with braided curtain-type fiber fillers, the upper and lower sides of which can be connected in series with iron rods, and fixed on the upper and lower filler frames respectively. 3 water outlets 2, 3 and 4; On the wall of the sequence batch type biofilm reactor above the upper filler frame, an overflow port 10 is provided; between the bottom of the sequence batch type biofilm reactor and the lower filler frame The inverted trapezoidal sludge area is equipped with two perforated aeration pipes 5 connected to the external aeration equipment of the sequencing batch biofilm reactor. Each pipe has two rows of small holes facing obliquely downward, forming an angle of 45° with the horizontal plane . On the wall of the sequencing batch type biofilm reactor between the perforated aeration pipe and the lower filler rack, a water inlet 1 is provided, and a mud discharge port 12 is provided at the bottom of the sequence batch type biofilm reactor, and in this mud discharge A mud discharge pipe 9 is installed at the mouth, and the mud discharge port can be connected with the municipal drainage pipe network through the mud discharge pipe 9; the slideway 6 is a strip groove, and the strip groove slideway is fixed on On the two side walls of the sequencing batch biofilm reactor between the upper packing frame and the lower packing frame.

There is a space in the middle of the packing area to enable the float decanter to move normally in the packing area.

Please refer to Figure 5 and Figure 6. The structure of the floating ball decanter is that two plastic floating balls 13 are arranged on the top of a concave overflow tank 15, and the two plastic floating balls are respectively connected with the concave overflow tank below by iron wires. The supporting columns 14 on both sides below the shaped overflow tank are fixedly connected with the concave overflow tank, and the other ends of the supporting columns on both sides are respectively embedded in the slideways on the two side walls of the sequencing batch biofilm reactor to ensure that the floating ball decanting water The support columns on both sides of the device can be embedded in the groove and slide smoothly; the concave overflow tank is connected to any one of the three water outlets on the wall of the sequencing batch biofilm reactor through a hose (determined according to the required water output) which outlet).

The perforated plate with small holes in the filter tank divides the filter tank into two parts, the upper filter area and the lower water collection area. Quartz sand filter material is installed in the filter area, and the filter tank wall above the filter area is equipped with There is a water inlet and an overflow, and the overflow can be connected to the municipal drainage pipe network through pipelines, and a water outlet is provided on the wall of the filter tank in the lower catchment area; the backwash pipe connected to the backwash pump outside the filter tank Located below catchment area.

The grid I is placed at the water inlet of the sedimentation chamber of the oil-separated regulating tank; the water outlet of the sewage chamber of the oil-separated regulating tank is connected with the water inlet of the sequence batch biofilm reactor through a pipeline; the sequence batch biofilm The water outlet pipeline of the reactor is connected with the water inlet of the filter tank; the water outlet of the filter tank is connected with the water storage tank installed with the ultraviolet sterilizer through the pipeline.

The garden domestic sewage treatment and reuse system of the present invention is used to treat and reuse a unit of sewage, and the effluent is used for toilet flushing, with a designed flow rate of 1m ³ /d.

Sewage is mainly miscellaneous water used by office workers and sewage from canteens. The water quality properties are as follows: SS: 30~80mg/L, CODcr: 50~100mg/L, NH ₄ ⁺ -N: 15~30mg/L.

The sewage first passes through the grid I, and the solid waste is intercepted and collected in the grid; the sewage then enters the oil separation adjustment tank II, and after standing and settling in the sedimentation chamber of the oil separation adjustment tank, the solid waste with larger particle size The particles are removed, and the grease and sewage are separated at the same time. The grease is discharged through the oil discharge port at the triangular overflow weir, and enters the municipal drainage pipe network through the oil discharge pipe, and the sewage enters the sewage chamber through the opening below the partition; in the morning , turn on the water pump, send the sewage in the sewage chamber into the sequencing batch biofilm reactor III, turn off the water pump, start the aeration equipment, provide oxygen through the perforated aeration pipe, and use the biofilm formed on the braided plastic fiber filler to degrade Organic pollutants in sewage, ammonia nitrogen and total suspended solids are removed at the same time; intermittent aeration operation is adopted during the day to save power consumption, and the electricity price is cheap at night, and continuous aeration is adopted; stop aeration, and the sewage is static in the sequencing batch biofilm reactor Set the sedimentation; open the electric valve, the sewage supernatant is discharged from the sequencing batch biofilm reactor through the float decanter until the liquid level reaches the water outlet, close the electric valve, and the drainage stops; the discharged sewage falls into the water under the action of gravity Enter the filter tank IV, use the quartz sand filter material to continue to filter the total suspended solids, the sewage is further purified, turn on the submersible pump, and transport the filtered sewage to the storage tank equipped with a UV sterilizer V, and turn off the submersible pump after reaching a certain level , The pathogenic microorganisms and bacteria in the sewage are killed after ultraviolet disinfection, and the treated water can be reused.

After the filter tank IV is used for a certain period of time, the filter tank is backwashed. When backwashing, close the water inlet electric valve and the water outlet submersible pump, turn on the backwash pump, send clean water from the bottom of the perforated plate along the backwash pipe to the filter area, wash the filter material, and the backwash water is discharged into the municipal drainage pipe network through the overflow pipe , turn off the backwash pump, and the backwash process ends.

The treatment results show that the effluent quality complies with the regulations on effluent reuse for flushing toilets in the "Urban Sewage Recycling and Utilization of Urban Miscellaneous Water Quality" GB/T18920-2002, and the treatment effect is remarkable.

Claims (9)

1. a courtyard domestic sewage is handled and reclaiming system, comprises graticule mesh, oil removal formula equalizing tank, sequencing batch biofilm reactor, hay tank and uv steriliser; It is characterized in that:

In the described oil removal formula equalizing tank triangle overflow weir, dividing plate are arranged; One dismountable dividing plate is divided into two independently preceding settling chambers and back sewage chamber with oil removal formula equalizing tank, is provided with the triangle overflow weir above the dividing plate that is positioned at settling chamber's one side, and there is oil discharge outlet at the place at the triangle overflow weir; The settling chamber communicates by the opening on the dividing plate with sewage chamber, has water-in on the wall of settling chamber, has water outlet on the wall of sewage chamber;

There are slideway, last stuffing frame, following stuffing frame, float-ball type to strain hydrophone, boring aeration pipe in the described sequencing batch biofilm reactor;

Top at the wall of sequencing batch biofilm reactor is equipped with stuffing frame, and the bottom is equipped with down stuffing frame, and the zone between last stuffing frame and the following stuffing frame is the packing area; On the wall of the sequencing batch biofilm reactor of packing area, have water outlet; On the wall of the sequencing batch biofilm reactor above the last stuffing frame, have overflow port; With mud district between the following stuffing frame boring aeration pipe that links to each other with the outside aerator of sequencing batch biofilm reactor is installed in the bottom of sequencing batch biofilm reactor; On the wall of the sequencing batch biofilm reactor between boring aeration pipe and the following stuffing frame, have water-in, be provided with mud discharging mouth in the bottom of sequencing batch biofilm reactor; Described slideway is consolidated on the sequencing batch biofilm reactor two side between stuffing frame and the following stuffing frame;

Have in the middle of the described packing area and can make float-ball type strain the space that hydrophone normally moves in the packing area;

Described float-ball type is strained constituting of hydrophone and be provided with two ball floats above a spill overflow groove, two ball floats are connected with the spill overflow groove of below by connector respectively, the pillar stiffener of both sides, spill overflow groove below is fixedlyed connected with the spill overflow groove, and the other end of supported on both sides post embeds respectively in the slideway on the sequencing batch biofilm reactor two side; The spill overflow groove is connected with water outlet on the sequencing batch biofilm reactor wall by flexible pipe;

Filtrate, perforation plate, backwash tube are arranged in the described hay tank; Described perforation plate is divided into filtrating area with hay tank, and two parts in following catchment area are equipped with filtrate in filtrating area, be provided with water-in and overflow port on the filtration tank skin above the filtrating area, is provided with water outlet on the filtration tank skin of following catchment area; The backwash tube that is connected with the backwashing pump of hay tank outside is positioned at the below, catchment area;

Graticule mesh places the water inlet, settling chamber of oil removal formula equalizing tank; The water outlet of the sewage chamber of oil removal formula equalizing tank is connected with the water-in of sequencing batch biofilm reactor by pipeline; The water outlet pipeline of sequencing batch biofilm reactor is connected with the water-in of hay tank; The water outlet of hay tank is connected with the tank that uv steriliser is installed by pipeline.

2. courtyard domestic sewage according to claim 1 is handled and reclaiming system, it is characterized in that: the opening on the described dividing plate is positioned at the dividing plate below near place, oil removal formula equalizing tank bottom.

3. courtyard domestic sewage according to claim 1 is handled and reclaiming system, and it is characterized in that: the water outlet that has on the wall of described sewage chamber is positioned at the top of sewage chamber.

4. courtyard domestic sewage according to claim 1 is handled and reclaiming system, and it is characterized in that: described mud district is the handstand trapezoidal shape.

5. courtyard domestic sewage according to claim 1 is handled and reclaiming system, it is characterized in that: be filled with the plaited curtain type fibrous packing in the described packing area, its upper and lower limit is individually fixed on stuffing frame and the following stuffing frame.

6. courtyard domestic sewage according to claim 1 is handled and reclaiming system, and it is characterized in that: described slideway is the long strip shape groove, and float-ball type is strained the slip of hydrophone supported on both sides post and embedded in the groove.

7. courtyard domestic sewage according to claim 1 is handled and reclaiming system, and it is characterized in that: described filtrate is a quartz sand filter media.

8. an application rights requires 1～7 each described courtyard domestic sewage to handle the method for disposing of sewage with reclaiming system, it is characterized in that:

Sewage at first passes through graticule mesh, enters oil removal formula equalizing tank then, removes solid particulate and makes oil substances with sewage is separated, and oil substances is discharged through the oil discharge outlet at triangle overflow weir place, and sewage enters sewage chamber through the opening below the dividing plate; Open water pump, the sewage of sewage chamber is sent in the sequencing batch biofilm reactor, switch off the pump, start aerator, provide oxygen by boring aeration pipe, utilize the organic pollutant in the microbial film degradation of sewage that forms on the filler, remove ammonia nitrogen and total suspended solid simultaneously, stop aeration, sewage staticly settles in sequencing batch biofilm reactor; Open motorized valve, the sewage supernatant liquor is strained hydrophone by float-ball type and is discharged sequencing batch biofilm reactor, arrives the water outlet place until liquid level, closes motorized valve, and draining stops; The sewage of discharging drops under action of gravity and enters hay tank, utilize filtrate to continue to filter total suspended solid, sewage is further purified, open submersible pump, filtered sewage is delivered to the tank that uv steriliser is installed, pathogeny microorganism in the sewage and bacterium are killed through behind the uv sterilisation, but the water reuse after the processing.

9. method according to claim 8 is characterized in that: when hay tank is carried out back flushing, close into water motorized valve and water outlet submersible pump, open backwashing pump, clear water is sent into filtrating area in the below along backwash tube from perforation plate, the flushing filtrate.

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