CN209481417U - A farming wastewater treatment system - Google Patents

Abstract

The utility model relates to a breeding wastewater treatment system, which comprises sequentially connected solid-liquid separation equipment, a biogas utilization module, a water collection adjustment module, a sedimentation treatment module, an SBR treatment module, an aerated biological filter and an artificial wetland module; wherein, the The solid-liquid separation equipment is used for solid-liquid separation of aquaculture waste. The liquid outlet of the solid-liquid separation equipment is connected to the biogas utilization module. The water collection adjustment module is used to balance the water quality and quantity. At least the settlement treatment module The biological aerated filter and the biological aerated filter are respectively connected with the sludge concentration tank, and can respectively discharge the gravity sedimentation sludge and backwash water into the sludge concentration tank, and the upper part of the sludge concentration tank is connected with the water collection regulation module. The utility model adopts the organic combination of "physical treatment + chemical treatment + biochemical treatment + biological treatment" process, which can make the wastewater discharge stably up to the standard, with low energy consumption, low operation cost, high removal rate of pollutants, and low investment cost .

Description

A farming wastewater treatment system

technical field

The utility model belongs to the technical field of environmental protection treatment, in particular to a breeding wastewater treatment system.

Background technique

With the rapid development of my country's livestock and poultry breeding industry, the pollution of breeding wastewater is becoming more and more serious. With my country's emphasis on environmental protection, the treatment of breeding wastewater is imminent.

Aquaculture wastewater has typical "three highs" characteristics, that is, high organic matter concentration, COD as high as 3000-12000mg/l, ammonia nitrogen as high as 800-2200mg/l, and suspended solids SS exceeding the standard by dozens of times; general biodegradability; strong odor; washing The discharge time is concentrated and the impact load is large.

To sum up, it is urgent to provide a breeding wastewater treatment system with stable system, low energy consumption, low operating cost, high removal rate of pollutants and low investment cost.

Utility model content

The purpose of the utility model is to provide a breeding wastewater treatment system with stable system, low energy consumption, low operation cost, high removal rate of pollutants and low investment cost.

The above purpose is achieved through the following technical solutions: a breeding wastewater treatment system, including sequentially connected solid-liquid separation equipment, biogas utilization module, water collection regulation module, sedimentation treatment module, SBR treatment module, biological aerated filter and constructed wetland module; wherein, the solid-liquid separation equipment is used for solid-liquid separation of aquaculture waste, the liquid outlet of the solid-liquid separation equipment is connected to the biogas utilization module, and the water collection adjustment module is used to balance the water quality and quantity, at least The sedimentation treatment module and the biological aerated filter are respectively connected with the sludge thickening tank, and can respectively discharge the gravity sedimentation mud and backwash water into the sludge thickening tank, and the upper part of the sludge thickening tank is connected with the water collecting tank. The adjustment modules are connected.

In application, the biogas utilization module, water collection regulation module, sedimentation treatment module, SBR treatment module and constructed wetland module respectively include biogas digesters, water collection regulation ponds, sedimentation ponds, SBR ponds and constructed wetlands. In the specific application process of the utility model, the solid-liquid separation equipment realizes the separation of slag and water, the dung is dried and transported outside for disposal, and the waste water enters the biogas tank for anaerobic treatment; the effluent of the biogas tank enters the water collection adjustment tank, and is pumped by the lifting pump to the sedimentation tank for treatment The bottom sediment in the settling tank is self-drained to the sludge thickening tank by gravity, and the upper sewage flows into the SBR tank; the SBR tank adopts the method of water inflow, aeration, sedimentation, drainage, and idleness, and the blower can be used to aerate and supply oxygen. The pollutants in the water are degraded through the growth and reproduction of microorganisms; the SBR tank decants water through a decanter until it enters the intermediate pool for buffering, and then pumps it into the biological aerated filter for deep aerobic treatment of the sewage; the biological aerated filter is backwashed The water is discharged into the sludge thickening tank, the effluent from the biological aerated filter enters the artificial wetland, and the pollutants are treated by plant growth, and the supernatant of the sludge thickening tank is returned to the water collection adjustment tank for further treatment. The utility model adopts the organic combination of "physical treatment + chemical treatment + biochemical treatment + biological treatment" process, the process system runs stably, the waste water can be stably discharged up to the standard, the energy consumption is low, the operation cost is low, and the follow-up artificial wetland treatment process can beautify the sewage Station, and purify the sewage while also purifying the air, the organic combination of various processes, the removal rate of pollutants is high, while the investment cost is low, and the treatment effect is good.

A further technical solution is that the front station of the solid-liquid separation equipment is provided with a stirring module, and the stirring module includes a stirring tank, a stirrer and a lifting pump arranged in the stirring tank, and the lifting pump is connected to the Solid-liquid separation equipment connected. In this way, through the sewage collection pipe network in the factory area, the sewage enters the mixing tank, is mixed by the mixer, and is pumped into the solid-liquid separation equipment to realize the separation of slag and water, and the dung is dried and transported out for disposal.

A further technical solution is that the aquaculture wastewater treatment system also includes a first blower and a second blower arranged side by side, and the air outlets of the first blower and the second blower are connected to the SBR treatment module and the biological aerated filter through a pipeline. The pool is connected. In this way, the first blower and the second blower provide air for the SBR treatment module and the biological aerated filter for aeration, and the first blower and the second blower can work simultaneously or independently according to the required air volume.

A further technical solution is that the air outlets of the first blower and the second blower are connected to the sedimentation treatment module through pipelines. In this way, the first air blower and the second air blower provide air for the sedimentation treatment module to realize blow-off.

A further technical solution is that an intermediate tank is provided between the SBR treatment module and the biological aerated filter, and the BR treatment module at least includes a decanter, and the decanter decants the sewage in the SBR treatment module to into the intermediate pool for buffering, and the sewage in the intermediate pool can be pumped into the biological aerated filter.

A further technical solution is that the aquaculture wastewater treatment system further includes a clear water pool, and the treatment liquid treated by the constructed wetland module flows into the clear water pool. In this way, the water quality trend can be monitored through the clear water pool as a sampling inspection port.

A further technical solution is that the aquaculture wastewater treatment system also includes a dosing and disinfection machine, and the dosing and disinfection machine performs sterilization and disinfection treatment by adding disinfectants to the tail water section of the clear water tank. In this way, the disinfected water meets the standard and is discharged to the river, which further ensures the quality of the discharged water and reduces environmental pollution.

A further technical solution is that the lower part of the sludge thickening tank is connected to the filter equipment through a pipeline and a diaphragm pump, and the filtrate outlet of the filter equipment is connected to the sedimentation treatment module. The sludge in the sludge thickening tank is pumped into the plate and frame filter press for treatment through the pneumatic diaphragm pump, the mud cake is sterilized and transported outside for disposal, and the filtrate flows to the sedimentation treatment module for further treatment.

A further technical solution is that the biogas utilization module, water collection regulation module, sedimentation treatment module, SBR treatment module and constructed wetland module include biogas digesters, water collection regulation ponds, sedimentation ponds, SBR ponds and constructed wetlands, respectively. Each pool can be semi-buried, and the mud discharge system adopts gravity self-drainage to reduce energy consumption. The specific functions of the above modules are as follows. Solid-liquid separator: use the principle of screw extrusion to separate solid-liquid from raw wastewater with high concentration and high SS, and its removal efficiency for SS and COD is as high as 70% or more; biogas digester: black film biogas Pool, in a closed environment, treats sewage through microbial fermentation; water collection adjustment pool: balance water quality and quantity, avoid too large fluctuations in water quality and water volume from affecting the sewage treatment system; sedimentation tank: provide strong conditions for entering the SBR pool, and fully remove SS , using gravity sludge discharge; SBR pool: Sequencing batch activated sludge method, orderly and intermittent operation in operation, collecting water, aeration, sedimentation, drainage and idle in one pool. In the aeration stage, the roots blower is used to supply oxygen, and the microorganisms grow and multiply, thereby reducing COD and having a good effect of nitrogen and phosphorus removal; biological aerated filter: the water intake mode adopts the mode of bottom in and top out, and the aeration mode Aeration is at the bottom, and volcanic rock filler is buried in the middle. The pool integrates biological oxidation and interception of suspended solids, and regularly backwashes the biological aerated filter; artificial wetland: when sewage and sludge flow in a certain direction, the main use of soil It is a technology for treating sewage and sludge through the triple synergy of physics, chemistry and biology of artificial media, plants and microorganisms. Its mechanism of action includes adsorption, retention, filtration, redox, precipitation, microbial decomposition, transformation, plant shading, residue accumulation, transpiration of water and nutrient absorption, and the action of various animals.

A further technical solution is that the water collection adjustment tank and the intermediate tank are respectively provided with lift pumps, and the lift pumps transport the sewage in the water collection adjustment tank and the intermediate tank to the sedimentation tank and the biological aerated filter respectively.

The wastewater treated by this system, the discharge indicators of water pollutants are as follows: 1) CODcr: ≤100mg/L; 2) BOD ₅ : ≤30mg/L; 3) Ammonia nitrogen: ≤80mg/L; 4) SS: ≤70mg/L L. Compared with the prior art, the utility model has the following advantages: 1) The organic combination of "physical treatment + chemical treatment + biochemical treatment + biological treatment" process is adopted, the process system runs stably, and the wastewater can be discharged stably up to the standard; 2) it can Realize PLC automatic control, which is convenient for operation and maintenance management; 3) Low energy consumption and low operating cost; 4) Subsequent artificial wetland treatment process can beautify the sewage station, and purify the sewage while also purifying the air; 5) The organic combination of various processes reduces pollution 6) Low investment cost and good treatment effect.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model.

Fig. 1 is the layout schematic diagram of the breeding wastewater treatment system involved in an embodiment of the present invention;

Fig. 2 is a schematic diagram of the treatment process of the aquaculture wastewater treatment system involved in an embodiment of the present invention.

In the picture:

1 Solid-liquid separation equipment 2 Water collection and adjustment tank 3 Digester 4 Settling tank

5 SBR tank 6 Constructed wetland module 7 Biological aerated filter tank 8 Stirring tank

9 mixer 10 first blower 11 second blower 12 intermediate pool

13 Clean water pool 14 Dosing and disinfection machine 15 Sludge concentration pool 16 Filtration equipment

17 diaphragm pump 18 decanter

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the utility model. In addition, those skilled in the art can make corresponding combinations of features in the embodiments in this document and in different embodiments according to the descriptions in this document.

Embodiments of the present utility model are as follows, referring to Fig. 1 and Fig. 2, a breeding wastewater treatment system, including solid-liquid separation equipment 1 connected in sequence, a biogas utilization module, a water collection regulation module, a sedimentation treatment module, an SBR treatment module, an aeration biological filter 7 and constructed wetland module 6; wherein, the solid-liquid separation device 1 is used for solid-liquid separation of culture waste, and the liquid outlet of the solid-liquid separation device 1 is connected with the biogas utilization module, and the set The water regulation module is used to balance the water quality and quantity. At least the sedimentation treatment module and the biological aerated filter tank 7 are connected to the sludge thickening tank 15 respectively, and the gravity sedimentation mud and backwash water can be discharged into the sludge thickening tank 15 respectively. The upper part of the sludge thickening tank 15 communicates with the water collection regulating module.

In application, as shown in Figure 1 and Figure 2, the biogas utilization module, water collection regulation module, sedimentation treatment module, SBR treatment module and constructed wetland module 6 respectively include a biogas digester 3, a water collection regulation pond 2, a settlement pond 4, SBR pool 5 and constructed wetlands. In the specific application process of the utility model, the solid-liquid separation equipment 1 realizes the separation of slag and water, the dung is dried and transported outside for disposal, and the waste water enters the biogas digester 3 for anaerobic treatment; the effluent of the biogas digester 3 enters the water collection adjustment pond 2, and pumps water through the lifting pump To the sedimentation tank 4 for treatment, the bottom sediment in the sedimentation tank 4 is automatically discharged to the sludge thickening tank 15 by gravity, and the upper layer of sewage flows into the SBR tank 5; The method can use the blower to aerate and supply oxygen, and degrade the pollutants in the water through the growth and reproduction of microorganisms; the SBR pool 5 decants the water through the decanter 18 until it enters the intermediate pool for buffering, and then pumps it into the biological aerated filter 7 to treat the sewage Carry out deep aerobic treatment; the backwash water of the biological aerated filter 7 is discharged into the sludge thickening tank 15, and the effluent of the biological aerated filter 7 enters the artificial wetland, and the pollutants are treated by plant growth, and the supernatant of the sludge thickening tank 15 The liquid is returned to the water collection adjustment tank 2 for further processing. The utility model adopts the organic combination of "physical treatment + chemical treatment + biochemical treatment + biological treatment" process, the process system runs stably, the waste water can be stably discharged up to the standard, the energy consumption is low, the operation cost is low, and the follow-up artificial wetland treatment process can beautify the sewage Station, and purify the sewage while also purifying the air, the organic combination of various processes, the removal rate of pollutants is high, while the investment cost is low, and the treatment effect is good.

On the basis of the above-mentioned embodiments, in another embodiment of the present invention, as shown in Figure 1, the front section of the solid-liquid separation device 1 is provided with a stirring module, and the stirring module includes a stirring tank 8, a stirring machine 9 and a The lift pump in the stirring tank 8 is connected to the solid-liquid separation device 1 through a pipeline. In this way, through the sewage collection pipe network in the factory area, the sewage enters the mixing tank 8, is mixed by the mixer 9, and is pumped into the solid-liquid separation equipment 1 to realize the separation of slag and water, and the dung is dried and transported outside for disposal.

On the basis of the above-mentioned embodiments, in another embodiment of the utility model, as shown in Figure 1, the aquaculture wastewater treatment system also includes a first blower 10 and a second blower 11 arranged side by side, and the first blower 10 and the second blower The air outlet of the blower 11 is connected with the SBR treatment module and the biological aerated filter 7 through a pipeline. In this way, the first blower 10 and the second blower 11 provide air for the SBR treatment module and the biological aerated filter 7 for aeration, and the first blower 10 and the second blower 11 can work simultaneously or independently according to the required air volume.

On the basis of the above embodiments, in another embodiment of the present invention, as shown in FIG. 1 , the air outlets of the first blower 10 and the second blower 11 are connected to the sedimentation treatment module through pipes. In this way, the first air blower 10 and the second air blower 11 provide air for the sedimentation treatment module to realize blow-off.

On the basis of the above embodiments, in another embodiment of the present invention, as shown in Figure 1, an intermediate pool 12 is provided between the SBR treatment module and the biological aerated filter 7, and the BR treatment module at least includes a decanter 18. The decanter 18 decants the sewage in the SBR treatment module to the intermediate pool 12 for buffering, and the sewage in the intermediate pool 12 can be pumped into the biological aerated filter 7.

On the basis of the above embodiments, in another embodiment of the present invention, as shown in Figure 1, the aquaculture wastewater treatment system further includes a clear water pool 13, and the treated liquid treated by the constructed wetland module 6 flows into the clear water pool 13. In this way, the water quality trend can be monitored through the clear water pool 13 as a sampling inspection port.

On the basis of the above-described embodiments, in another embodiment of the utility model, as shown in Figure 1, the aquaculture wastewater treatment system also includes a dosing and disinfection machine 14, and the dosing and disinfection machine 14 passes through the 13 tail water sections of the clear water tank. Add disinfectant for sterilization and disinfection. In this way, the disinfected water meets the standard and is discharged to the river, which further ensures the quality of the discharged water and reduces environmental pollution.

On the basis of the foregoing embodiments, in another embodiment of the utility model, as shown in Figure 1, the bottom of the sludge thickening tank 15 is connected to the filter device 16 through a pipeline and a diaphragm pump 17, and the filtrate outlet of the filter device 16 is It is connected with the settlement processing module. The sludge in the sludge thickening tank 15 is pumped into the plate and frame filter press through the pneumatic diaphragm pump 17 for treatment, the mud cake is sterilized and transported outside for disposal, and the filtrate flows to the sedimentation treatment module for further treatment.

On the basis of the above embodiments, in another embodiment of the utility model, as shown in Figure 1, the biogas utilization module, water collection regulation module, settlement treatment module, SBR treatment module and constructed wetland module 6 respectively include a biogas tank 3, a collection Water regulation pond 2, sedimentation pond 4, SBR pond 5 and constructed wetland. Each pool can be semi-buried, and the mud discharge system adopts gravity self-drainage to reduce energy consumption. The specific functions of the above modules are as follows. Solid-liquid separator: uses the principle of screw extrusion to separate solid-liquid from raw wastewater with high concentration and high SS, and its removal efficiency for SS and COD is as high as 70% or more; biogas tank 3: black film Digester 3, in a closed environment, treats sewage through the fermentation of microorganisms; water collection adjustment tank 2: balances water quality and quantity, and avoids excessive fluctuations in water quality and water volume from affecting the sewage treatment system; settling tank 4: provides powerful water for entering SBR tank 5 Conditions, fully remove SS, adopt gravity sludge discharge; SBR pool 5: sequencing batch activated sludge method, orderly and intermittent operation in operation, collect water, aeration, sedimentation, drainage and idle in one pool. In the aeration stage, the roots blower is used to supply oxygen, and the microorganisms grow and reproduce, thereby reducing COD and having a good effect of nitrogen and phosphorus removal; biological aerated filter 7: the water intake mode adopts the bottom-in and top-out mode, and the aeration The method is aeration at the bottom, and volcanic rock filler is buried in the middle. The pool integrates biological oxidation and interception of suspended solids, and regularly backwashes the biological aerated filter 7; Constructed wetland: when sewage and sludge flow in a certain direction, the main It is a technology to treat sewage and sludge by using the physical, chemical and biological synergy of soil, artificial medium, plants and microorganisms. Its mechanism of action includes adsorption, retention, filtration, redox, precipitation, microbial decomposition, transformation, plant shading, residue accumulation, transpiration of water and nutrient absorption, and the action of various animals.

On the basis of the foregoing embodiments, in another embodiment of the present utility model, as shown in Fig. 1 , the water-collecting regulating pool 2 and the intermediate pool 12 are respectively provided with lift pumps, and the lifting pumps will separate the water-collecting regulating pool 2 and the intermediate pool 12 is transported to the sedimentation tank 4 and the biological aerated filter 7 respectively.

The wastewater treated by this system, the discharge indicators of water pollutants are as follows: 1) CODcr: ≤100mg/L; 2) BOD ₅ : ≤30mg/L; 3) Ammonia nitrogen: ≤80mg/L; 4) SS: ≤70mg/L L. Compared with the prior art, the utility model has the following advantages: 1) The organic combination of "physical treatment + chemical treatment + biochemical treatment + biological treatment" process is adopted, the process system runs stably, and the wastewater can be discharged stably up to the standard; 2) it can Realize PLC automatic control, which is convenient for operation and maintenance management; 3) Low energy consumption and low operating cost; 4) Subsequent artificial wetland treatment process can beautify the sewage station, and purify the sewage while also purifying the air; 5) The organic combination of various processes reduces pollution 6) Low investment cost and good treatment effect.

For those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims (10)

1. A breeding wastewater treatment system, characterized in that, comprises sequentially connected solid-liquid separation equipment, biogas utilization modules, water collection regulation modules, sedimentation treatment modules, SBR treatment modules, biological aerated filter tanks and constructed wetland modules; wherein , the solid-liquid separation device is used for solid-liquid separation of aquaculture waste, the liquid outlet of the solid-liquid separation device is connected to the biogas utilization module, the water collection adjustment module is used to balance the water quality and quantity, at least the settlement The treatment module and the biological aerated filter are respectively connected with the sludge thickening tank, and can respectively discharge the gravity sedimentation sludge and backwash water into the sludge thickening tank, and the upper part of the sludge thickening tank is connected with the water collection adjustment module Pass. 2. The aquaculture wastewater treatment system according to claim 1, characterized in that, the front section station of the solid-liquid separation equipment is provided with a stirring module, and the stirring module includes a stirring tank, an agitator and a mixing tank arranged in the stirring tank A lift pump, the lift pump is connected to the solid-liquid separation device through a pipeline. 3. The aquaculture wastewater treatment system according to claim 1, wherein the aquaculture wastewater treatment system also includes a first air blower and a second air blower arranged side by side, and the air outlets of the first air blower and the second air blower pass through The pipeline is connected with the SBR treatment module and the biological aerated filter. 4. The aquaculture wastewater treatment system according to claim 3, characterized in that, the air outlets of the first blower and the second blower are connected to the sedimentation treatment module through pipelines. 5. The aquaculture wastewater treatment system according to any one of claims 1 to 4, wherein an intermediate pool is provided between the SBR treatment module and the biological aerated filter, and the BR treatment module at least includes decanted water The decanter decants the sewage in the SBR treatment module to the intermediate pool for buffering, and the sewage in the intermediate pool can be pumped into the biological aerated filter. 6. The aquaculture wastewater treatment system according to claim 5, characterized in that, the aquaculture wastewater treatment system further comprises a clear water pool, and the treated liquid after being treated by the constructed wetland module flows into the clear water pool. 7. The aquaculture wastewater treatment system according to claim 6, characterized in that, the aquaculture wastewater treatment system also includes a dosing disinfection machine, and the dosing disinfection machine is sterilized by adding a disinfectant in the tail water section of the clear water tank Disinfection treatment. 8. The aquaculture wastewater treatment system according to claim 6, wherein the bottom of the sludge thickening tank is connected to the filter equipment through a pipeline and a diaphragm pump, and the filtrate outlet of the filter equipment is connected to the sedimentation treatment module. connected. 9. The aquaculture wastewater treatment system according to claim 8, characterized in that, the biogas utilization module, water collection regulation module, sedimentation treatment module, SBR treatment module and constructed wetland module are biogas digesters, water collection regulation ponds, Settling ponds, SBR ponds and constructed wetlands. 10. The aquaculture wastewater treatment system according to claim 9, characterized in that, the water-collecting regulating tank and the intermediate pool are respectively provided with lift pumps, and the lifting pumps transport the sewage from the water-collecting regulating tank and the intermediate pool to the Settling tanks and biological aerated filters.