CN209507740U - Integrated sewage treatment and reuse equipment - Google Patents

Abstract

A kind of integrated sewage disposal equipment for reclaiming, is related to livestock breeding wastewater processing technology field；Its structure includes cabinet, the inside of the cabinet is respectively equipped with treatment tank and equipment room, advanced treatment system is equipped in equipment room, inlet tube enters cabinet and is connected to treatment tank, treatment tank is connected to by pipeline with advanced treatment system, advanced treatment system is connected to outlet tube, the treatment tank includes the first order anoxic pond being sequentially communicated, first order aerobic tank, second level anoxic pond and second level aerobic tank, floating stuffing is equipped with inside the first order aerobic tank, second aerobic tank is equipped at least one set MBR membrane module.The utility model is handled farm's anaerobism biogas slurry by the combined process of two-stage A/O, MBBR and MBR, so that equipment water outlet is reached quality of reused water standard, is made contactless productivity reuse in livestock and poultry farm, realizes waste water zero emission；Furthermore integrated case structure keeps the turnover of the utility model more flexible.

Description

Integrated sewage treatment and reuse equipment

technical field

The utility model relates to the technical field of livestock and poultry breeding wastewater treatment, in particular to integrated sewage treatment and reuse equipment.

Background technique

With the increasing demand for meat products and the rapid development of large-scale livestock and poultry breeding industry, the pollution problem of livestock and poultry breeding has become more and more prominent. To this end, the state has successively issued a number of standards and regulations for the prevention and control of pollution from livestock and poultry breeding, focusing on the prevention and control of pollution from livestock and poultry breeding.

Existing large-scale livestock and poultry farms usually adopt a process route of "solid-liquid separation-anaerobic treatment-aerobic treatment". However, most of the treatment effects are not good, the wastewater treatment facilities cannot operate normally, and a large amount of waste liquid is directly discharged without effective treatment, seriously polluting the ecological environment. Moreover, due to the irregular discharge of manure from livestock and poultry farms and the unstable water intake of the sewage treatment system, it has a great impact on the normal operation of the biochemical treatment system, especially the cultivation of activated sludge during commissioning, resulting in a long commissioning period and slow startup of the biochemical treatment system. . Even after the activated sludge is cultivated, it is vulnerable to impact, and the biochemical treatment effect is very poor and even needs to be recultivated, which is time-consuming and labor-intensive.

In addition, the existing treatment facilities usually adopt the form of civil construction. Once the farm needs to be relocated, the treatment facilities can only be abandoned or dismantled, resulting in a great waste of resources and economic losses for farmers.

Utility model content

The purpose of the utility model is to avoid the deficiencies in the prior art and provide an integrated sewage treatment and reuse equipment to treat the anaerobic biogas slurry of the farm, so that the effluent of the equipment can meet the water quality standard of the reused water.

The purpose of this utility model is achieved through the following technical solutions:

Provide integrated sewage treatment and reuse equipment, including the box body, the interior of the box body is respectively equipped with a sewage treatment pool and an equipment room, the equipment room is equipped with an advanced treatment system, the liquid inlet pipe enters the box body and communicates with the sewage treatment pool, The sewage treatment pool is connected to the advanced treatment system through pipelines, and the advanced treatment system is connected to the liquid outlet pipe. The sewage treatment pool includes the first-stage anoxic pool, the first-stage aerobic pool, and the second-stage anoxic pool that are connected in sequence. And the second-level aerobic tank, the first-level aerobic tank is provided with suspended fillers, and the second aerobic tank is provided with at least one set of MBR membrane modules.

The sewage treatment tank is connected with a backflow device, and the backflow device includes a first backflow device, a second backflow device, and a third backflow device, and the first backflow device communicates with the first-stage aerobic pool and the first-stage anoxic pool, the second backflow device communicates with the second-stage aerobic pool and the second-stage anoxic pool, and the third backflow device communicates with the second-stage aerobic pool and the first-stage anoxic pool.

The sewage treatment tank is provided with a biological adsorption tank and a sedimentation tank in sequence, and the biological adsorption tank and the sedimentation tank are located upstream of the first-stage anoxic tank, and a fourth backflow device is arranged between the sedimentation tank and the biological adsorption tank.

The bottom of the first-stage aerobic tank is provided with an aeration device, and the second-stage aerobic tank is provided with two sets of aeration devices, wherein one set of aeration devices is located at the bottom of the MBR membrane module, and the other set of aeration devices The device is located in other biochemical areas except the MBR membrane module, and the aeration device is one of the aeration pan, aeration pipe and perforated pipe.

Both the first anoxic tank and the second anoxic tank are equipped with a stirring device for intermittent stirring.

A water hole is provided between the adjacent sewage treatment pools, and a suspended filler intercepting device is arranged inside the water hole between the first aerobic pool and the second anoxic pool.

Both the first-stage anoxic pool and the second-stage anoxic pool are cultured with denitrifying bacteria, and fixed fillers are placed in both the first-stage anoxic pool and the second-stage anoxic pool.

The equipment room is equipped with an advanced treatment system, a control electric cabinet and a blower, the input end of the advanced treatment system is connected with the output end of the sewage treatment tank, and the blower is connected with the aeration device through an air supply pipe.

The advanced treatment system is at least one of an ozone reaction system, a dosing precipitation system, and a filtration system.

The sewage treatment pond also includes at least one group of additional ponds, the additional ponds are located between the downstream of the first aerobic pond and the upstream of the second anoxic pond, and the additional ponds include sequentially connected additional pits Oxygen pool and additional aerobic pool.

Beneficial effects of the utility model: the utility model carries out nitrogen removal treatment on the anaerobic biogas slurry of the farm through the combination process of two-stage A/O, MBBR and MBR, so that the effluent of the equipment can reach the water quality standard of reused water. It can be used for non-contact productive reuse or as farmland/woodland irrigation water to realize "zero discharge" of wastewater; in addition, the integrated box structure makes the turnover of the utility model more flexible, has good environmental benefits, and the box structure is simple. It has the advantages of good treatment effect, automatic control, high operation stability, high reuse rate, and saving secondary investment.

Description of drawings

Utilize accompanying drawing to further illustrate the utility model, but the embodiment in the accompanying drawing does not constitute any restriction to the present utility model, for those of ordinary skill in the art, under the premise of not paying creative work, also can obtain according to following accompanying drawing Additional drawings.

Fig. 1 is a schematic diagram of the technological process of Embodiment 1 of the integrated sewage treatment and reuse equipment of the present invention.

Fig. 2 is a schematic layout diagram of Embodiment 1 of the integrated sewage treatment and reuse equipment of the present invention.

Fig. 3 is a schematic diagram of the technological process of Embodiment 2 of the integrated sewage treatment and reuse equipment of the present invention.

Fig. 4 is a schematic diagram of the technological process of Embodiment 3 of the integrated sewage treatment and reuse equipment of the present invention.

Fig. 5 is a schematic diagram of the technological process of Embodiment 4 of the integrated sewage treatment and reuse equipment of the present invention.

Fig. 6 is a schematic diagram of the process flow of Embodiment 5 of the integrated sewage treatment and reuse equipment of the present invention.

The picture includes:

1. Biological adsorption tank; 2. Sedimentation tank; 3. The first level anoxic tank;

31. Stirring device; 32. Fixed packing; 4. The first level aerobic pool;

41. Suspended filler; 51. First reflux device; 52. Second reflux device;

53. The third backflow device; 54. The fourth backflow device; 6. The second level anoxic pool;

7. Second-level aerobic pool; 71. MBR membrane module;

8. Cabinet; 81. Blower;

811. Aeration disc; 812. Perforated aeration device;

82. Advanced treatment system; 83. Control electric cabinet; 101 additional anoxic pool; 102 additional aerobic pool.

Detailed ways

The utility model is further described in conjunction with the following examples.

Example 1.

The integrated sewage treatment and recycling equipment of this embodiment, referring to Fig. 1 to Fig. 2, includes a box body 8, the interior of the box body 8 is respectively provided with a sewage treatment pool and an equipment room, and an advanced treatment system 82 is arranged in the equipment room , the liquid inlet pipe enters the box body 8 and communicates with the sewage treatment pool, the sewage treatment pool is connected with the advanced treatment system 82 through the pipeline, and the advanced treatment system 82 is communicated with the liquid outlet pipe, and the sewage treatment pool includes the first-level gaps connected in sequence Oxygen pool 3, the first level aerobic pool 4, the second level anoxic pool 6 and the second level aerobic pool 7, the inside of the first level aerobic pool 4 is provided with a suspended filler 41, the second aerobic pool The pool is provided with at least one set of MBR membrane modules 71 .

The first stage aerobic tank 4 adds suspended filler 41, on the one hand can improve the biomass of unit volume and biological species in the first aerobic tank, is conducive to the growth and reproduction of nitrifying bacteria with long mud age, and improves nitrification efficiency; On the one hand, in the first-stage aerobic pool 4, there are not only activated sludge suspended in the water, but also biofilm attached to the suspended filler 41. When the integrated sewage treatment and reuse equipment has large fluctuations in the influent water volume and water quality At this time, the biofilm has a strong acceptance and good impact resistance, which makes the biochemical system run stably.

The second-stage aerobic pool 7 has at least one set of MBR membrane modules 71. In this embodiment, the second-stage aerobic pool 7 is provided with two sets of MBR membrane assemblies 71, and the two sets of MBR membrane assemblies 71 are connected in parallel to discharge water. Through the high-efficiency interception effect of the membrane, all bacteria and suspended solids are trapped in the second-stage aerobic pool 7, so that the effluent water quality is better. In addition, the membrane can effectively trap nitrifying bacteria, make the nitrification reaction go smoothly, and effectively remove ammonia nitrogen; at the same time, it can trap macromolecular organic matter that is difficult to degrade in the aquaculture wastewater, prolong its residence time in the reactor, and maximize its degradation. In addition, by regularly discharging the remaining sludge in the second-stage aerobic tank 7, the concentration and age of activated sludge in the system can be effectively controlled.

The outside of the sewage treatment tank is communicated with a reflux device, and the reflux device includes a first reflux device 51, a second reflux device 52, and a third reflux device 53, and the first reflux device 51 communicates with the first-stage aerobic tank 4 and The first level anoxic tank 3, the second backflow device 52 communicates with the second level aerobic tank 7 and the second level anoxic tank 6, and the third backflow device 53 communicates with the second level aerobic tank 7 and the first level level anoxic pool 3 connected,

The first backflow device 51 backflows the nitrification liquid in the first-stage aerobic tank 4 to the first-stage anoxic tank 3 . The denitrifying bacteria in the first anoxic tank make full use of the organic matter in the water, and denitrify with the nitrifying liquid returned from the first aerobic tank to remove nitrate nitrogen.

The second backflow device 52 backflows the nitrification liquid in the second-stage aerobic tank 7 to the second-stage anoxic tank 6 . The denitrifying bacteria in the second anoxic tank perform endogenous respiration or use the organic matter in the water to undergo denitrification reaction with the nitrifying liquid flowing back from the second aerobic tank and the nitrifying liquid flowing into the first aerobic tank to further remove nitric acid Nitrogen, improve the nitrogen removal efficiency of the system.

The third return device 53 returns the sludge and nitrification liquid in the second-stage aerobic tank 7 to the first-stage anoxic tank 3 . On the one hand, the sewage containing nitrate nitrogen returned from the second aerobic tank is denitrified and denitrified by the denitrifying bacteria in the first anoxic tank to further remove nitrate nitrogen; on the other hand, the sludge from the second aerobic tank 7 is returned , to replenish the microbial biomass of the system.

The reflux device adopts air lift reflux, and the air provided by the fan can be used as the lifting power to make the sludge reflux. Thereby, equipment such as a return pump can be unnecessary, which reduces the cost of equipment purchase and maintenance, and at the same time reduces the power consumption of the entire sewage treatment equipment. The reflux devices are respectively controlled by valves, which can control the reflux flow and reflux time.

Both the first-stage aerobic tank 4 and the second-stage aerobic tank 7 are equipped with an aeration device, and the aeration device can be an aeration pan 811, an aeration tube or a perforated aeration device 812, preferably, this The aeration device in the embodiment includes an aeration disc 811 and a perforated aeration device, and the aeration disc 811 is located in the first-stage aerobic tank 4 and the second-stage aerobic tank 7 except for the remaining areas of the MBR membrane module. Oxygen is supplied to the aerobic pool to provide dissolved oxygen required for microbial degradation. The perforated aeration device 812 is located below the MBR membrane module inside the second-stage aerobic tank 7, and is used for air-water oscillation around the membrane module to keep the membrane surface clean and prevent membrane clogging.

The first-stage anoxic tank 3 and the second-stage anoxic tank 6 are provided with a stirring device 31 to intermittently stir the sewage in the sewage treatment tank. The stirring device 31 can be a mechanical stirring device or an intermittent aeration stirring device 31. Preferably, the mechanical stirring device used in this embodiment can ensure the anoxic environment of the anoxic tank, thereby improving the treatment effect.

Water holes are provided between the adjacent sewage treatment pools, and the water holes of the first-stage aerobic pool 4 and the second-stage anoxic pool 6 are provided with suspended fillers 41 intercepting devices to prevent suspended fillers 41 from entering with the water flow. The second anoxic pool causes loss of filler.

A blower 81, a control cabinet 83, an advanced processing system 82, etc. are arranged in the equipment room. The advanced treatment system 82 may be at least one of an ozone reaction system, a drug-dosing precipitation system, a filtration system, and the like. Preferably, in this embodiment, the advanced treatment system 82 is an ozone reaction system. After the MBR effluent is treated with ozone, the effects of further reducing organic pollutants, decolorization and disinfection can be achieved. The ozone reaction system includes an ozone generator, gas source equipment, an ozone reaction tank, gas-liquid mixing equipment, and the like. The gas source equipment is an air compressor or an oxygen generator, and the gas-liquid mixing equipment is an ejector or a titanium alloy aeration disc 811 or a dissolved air pump. In this embodiment, preferably, the gas source is from the oxygen source provided by the oxygen generator, and compared with the air source provided by the air compressor, the ozone concentration can be increased by 3-5 times. The gas-liquid mixing equipment is a gas-liquid mixing pump. Due to the pressurized mixing of the gas-liquid mixing pump, the ozone and wastewater are fully dissolved and mixed, which can effectively improve the dissolution efficiency compared with other gas-liquid mixing equipment.

Example 2:

The integrated sewage treatment and recycling equipment of this embodiment, with reference to Figure 3, other structures of this embodiment are the same as that of Embodiment 1, the difference is: the first-stage anoxic pool 3 and the second-stage anoxic A fixed filler 32 is placed in the pool 6 . On the one hand, the biomass and biological species per unit volume in the anoxic tank can be increased, and the denitrification reaction efficiency can be improved; When the influent water volume and water quality of the equipment fluctuate greatly, the biofilm has a strong acceptance and good impact resistance, which makes the biochemical system run stably.

Example 3:

The integrated sewage treatment and recycling equipment of this embodiment, with reference to Figure 4, other structures of this embodiment are the same as that of Embodiment 1, the difference is that: the sewage treatment pool is provided with a biological adsorption tank 1 and a sedimentation tank 2 in sequence, The biosorption tank 1 and the sedimentation tank 2 are located upstream of the first-stage anoxic tank 3 , and a fourth backflow device 54 is provided between the sedimentation tank 2 and the biosorption tank 1 . The biological adsorption tank 1 can absorb organic matter in influent water, reduce the impact of organic loads and toxic and harmful substances in subsequent treatment units, and at the same time generate a large amount of sludge with high organic matter content, which can be used for denitrifying bacteria. The sedimentation tank 2 can enrich and utilize the suspended particles in the biogas slurry. The sludge is returned from the sedimentation tank 2 to the biosorption tank 1 through the fourth backflow device 54 to reduce the loss of microorganisms.

Example 4:

The integrated sewage treatment and recycling equipment of this embodiment, with reference to Figure 5, other structures of this embodiment are the same as those of Embodiment 3, the difference is: the first-stage anoxic pool 3 and the second-stage anoxic A fixed filler 32 is placed in the pool 6 . On the one hand, the biomass and biological species per unit volume in the anoxic tank can be increased, and the denitrification reaction efficiency can be improved; When the influent water volume and water quality of the equipment fluctuate greatly, the biofilm has a strong acceptance and good impact resistance, which makes the biochemical system run stably.

Example 5.

The other structure of this embodiment is the same as that of Embodiment 4, except that: the sewage treatment tank also includes a group of additional pools, the additional pools are located downstream of the first-stage aerobic pool 4 and located in the second Upstream of the secondary anoxic pool 6, the additional pool includes an additional anoxic pool 101 and an additional aerobic pool 102 connected in sequence, through multi-stage nitrification-denitrification reactions, the total nitrogen removal efficiency of the equipment is further improved.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (10)

1. integrated sewage disposal equipment for reclaiming, which is characterized in that including cabinet, the inside of the cabinet is respectively equipped at sewage Pond and equipment room are managed, is equipped with advanced treatment system in equipment room, inlet tube enters cabinet and is connected to treatment tank, sewage treatment Pond is connected to by pipeline with advanced treatment system, and advanced treatment system is connected to outlet tube, and the treatment tank includes successively First order anoxic pond, first order aerobic tank, second level anoxic pond and the second level aerobic tank of connection, in the first order aerobic tank Portion is equipped with floating stuffing, and the second level aerobic tank is equipped at least one set MBR membrane module.

2. integrated sewage disposal equipment for reclaiming according to claim 1, it is characterised in that: the treatment tank connection There is a reflux unit, the reflux unit includes the first reflux unit, the second reflux unit, third reflux unit, and described first Reflux unit is connected to first order aerobic tank and first order anoxic pond, and second reflux unit is connected to second level aerobic tank and second Grade anoxic pond, the third reflux unit connection second level aerobic tank are connected to first order anoxic pond.

3. integrated sewage disposal equipment for reclaiming according to claim 2, it is characterised in that: the treatment tank is successively Equipped with biological adsorption pond, sedimentation basin, the biological adsorption pond and sedimentation basin are located at the upstream of first order anoxic pond, the sedimentation basin The 4th reflux unit is equipped between biological adsorption pond.

4. integrated sewage disposal equipment for reclaiming according to claim 2, it is characterised in that: the first order aerobic tank Bottom is equipped with aerator, two groups of aerators is equipped in the second level aerobic tank, wherein one group of aerator is located at MBR film Component bottom, another group of aerator are located at other biochemical areas in addition to MBR membrane module, the aerator be aeration plate, One of aeration tube and perforated pipe.

5. integrated sewage disposal equipment for reclaiming according to claim 1, it is characterised in that: the first order anoxic pond and The second level anoxic pond is respectively provided with the agitating device of intermittent stirring.

6. integrated sewage disposal equipment for reclaiming according to claim 1, it is characterised in that: the adjacent treatment tank Between be provided with water hole, water hole is internally provided with floating stuffing and blocks between the first order aerobic tank and second level anoxic pond Cut device.

7. integrated sewage disposal equipment for reclaiming according to claim 1, it is characterised in that: the first order anoxic pond and Culture has denitrifying bacterium in second anoxic pond, places fixation in the first order anoxic pond and the second level anoxic pond and fills out Material.

8. integrated sewage disposal equipment for reclaiming according to claim 4, it is characterised in that: be equipped in the equipment room deep Spend processing system, control electric cabinet and air blower, the output end company of the advanced treatment system input terminal and the treatment tank Logical, the air blower is connect by air supply pipe with the aerator.

9. integrated sewage disposal equipment for reclaiming according to claim 8, it is characterised in that: the advanced treatment system is At least one of ozone reaction system, dosing settling system, filtration system.

10. integrated sewage disposal equipment for reclaiming according to claim 1, it is characterised in that: the treatment tank is also Including the additional pond of at least one set, the additional pond is located at the upper of the downstream of the first order aerobic tank and the second level anoxic pond Between trip, the additional pond includes the additional anoxic pond being sequentially communicated and additional aerobic tank.