CN210796123U - Breeding wastewater treatment device - Google Patents
Breeding wastewater treatment device Download PDFInfo
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- CN210796123U CN210796123U CN201921574644.6U CN201921574644U CN210796123U CN 210796123 U CN210796123 U CN 210796123U CN 201921574644 U CN201921574644 U CN 201921574644U CN 210796123 U CN210796123 U CN 210796123U
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Abstract
The utility model discloses a breeding wastewater treatment device, which comprises a grid channel, a temporary storage tank, a solid-liquid separator, a primary sedimentation tank, a water collecting tank, an air floatation device, a heating tank, a UASB reactor, a two-stage A/O reaction tank, a mixing tank and a final sedimentation tank which are sequentially connected through a sewage pipeline; the solid-liquid separator, the primary sedimentation tank, the air floatation device, the UASB reactor and the secondary sedimentation tank are respectively connected with the sludge tank through sludge pipelines; the sludge tank is connected with a sludge dewatering machine; after the livestock and poultry breeding wastewater is treated by the device, the harm of the livestock and poultry breeding wastewater to the environment is reduced. The waste water can be used in agriculture after being treated, and the separated manure residue can be composted for harmless treatment and then applied to farmlands, so that a livestock and poultry waste water treatment mode combining planting and breeding is realized.
Description
Technical Field
The utility model relates to a waste water treatment field, concretely relates to breed effluent treatment plant.
Background
The excrement and urine that the plant produced and the emission of waste water can cause serious pollution for groundwater, surface water, can influence people's physical and mental health even, does not contain a large amount of pollutants in the excrement and urine through handling moreover, and this kind of pollutant along with rainwater etc. erode rivers lake sea, can consume a large amount of dissolved oxygen in the water, cause water pollution. The large amount of nutrients contained in the wastewater is also a main cause of eutrophication of water bodies, and pollutants discharged into fish ponds and rivers can cause death of aquatic organisms. If sewage generated by a farm is infiltrated into the ground, the concentration of nitrate nitrogen and nitrite nitrogen in the ground water is increased, the content of dissolved oxygen is greatly reduced, toxic components are increased greatly, the water quality is obviously deteriorated, and serious threat is caused to surrounding water, and if the ground water is reused for irrigation, crops can be killed.
The general survey data of pollution sources show that the agricultural sources account for most of the main pollutant discharge amount in China, wherein the COD discharge amount of a pig farm accounts for more than 30% of the total amount, namely 850 million tons, nitrogen accounts for more than 30%, phosphorus accounts for more than 40%, and the discharge amount of the live pig breeding pollutants accounts for more than 60% of the whole agricultural sources. The excrement and urine has more organic matters, difficult treatment and high cost, and the treatment difficulty is increased due to intensive discharge, so that a mature treatment system is urgently needed to meet the treatment requirement of the existing aquaculture wastewater.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical problem, the utility model provides a breed effluent treatment plant breeds waste water to beasts and birds after treating, reduces beasts and birds and breeds the harm of waste water to the environment.
The utility model provides a technical scheme that its technical problem adopted is: a cultivation wastewater treatment device comprises a grid channel, a temporary storage tank, a solid-liquid separator, a primary sedimentation tank, a water collecting tank, an air floatation device, a heating tank, a UASB reactor, a two-stage A/O reaction tank, a mixing tank and a final sedimentation tank which are sequentially connected through a sewage pipeline; the solid-liquid separator, the primary sedimentation tank, the air floatation device, the UASB reactor and the secondary sedimentation tank are respectively connected with the sludge tank through sludge pipelines; the sludge tank is connected with a sludge dewatering machine.
The mechanical grating is arranged in the grating channel, and the mechanical grating is used for intercepting impurities such as suspended matters, floating matters, sand and stones with larger particle sizes in the wastewater, so that the impurities are prevented from entering a subsequent treatment system, and the equipment such as a water pump and a solid-liquid separator in the system are prevented from being abraded, and the service life of the equipment is influenced.
The temporary storage pool is used for temporarily storing the excrement wastewater and lifting the wastewater to a solid-liquid separator by a pump for solid-liquid separation; after the wastewater enters a solid-liquid separator, the wastewater is firstly subjected to solid-liquid separation through a fine screen, suspended matters in the raw water are intercepted, the wastewater slides downwards under the gravity to enter a spiral extrusion unit, and the suspended matters are dewatered through spiral extrusion, so that the solid-liquid separation is realized.
The primary sedimentation tank is used for further separating the residual part of fine suspended matters.
The water collecting tank is used for collecting, storing and balancing the quality and quantity of the wastewater.
The air floatation device is characterized in that air is introduced into water in a micro-bubble mode, the micro-bubbles are adhered to particles suspended in the water to form a water-gas-particle three-phase mixed system, and after the particles are adhered with the bubbles, the particles float upwards on the water surface when the density is smaller than that of the water to form a scum layer which is separated from the water.
The heating tank is used for temporarily storing the water discharged by the air floatation device, lifting the wastewater to the UASB reactor by a pump for anaerobic fermentation, and heating the wastewater.
The central component in the UASB reactor is a three-phase separator that can separate gas, water and sludge under turbulent flow of water. Wastewater enters through a water distribution system at the bottom of the reactor and is fully contacted with flocculent anaerobic sludge in the reactor, most of organic sludge in the wastewater is converted into methane through degradation of anaerobic microorganisms, a small part of organic sludge is converted into sludge, and a mixture of the methane, the water and the sludge is separated through a three-phase separator.
The UASB reactor is connected with the water seal device, because the marsh gas generated by the UASB reaction tank contains certain moisture which has great influence on the utilization of the marsh gas, and the moisture in the marsh gas and hydrogen sulfide act together to accelerate the corrosion of pipelines, valves, flowmeters and the like, the dehydration treatment is required when the marsh gas desulfurization is carried out. Removing water in the biogas, increasing the quality of the produced biogas, and utilizing the biogas.
The two-stage A/O reaction tank comprises an anoxic tank and an aerobic tank which are communicated, the aerobic tank is connected with the UASB reactor through a sludge pipeline, the aerobic tank is connected with a secondary sedimentation tank, and organic matters and ammonia nitrogen in the wastewater are removed in the two-stage A/O reaction tank.
The secondary sedimentation tank is used for carrying out mud-water separation on aerobic effluent, and part of sludge flows back to the anoxic tank to ensure the sludge amount of the aerobic system.
The mixing tank and the air floatation device are respectively connected with a PAC feeding pipe and a PAM feeding pipe, the PAC is polyaluminium chloride and is used for coagulation in industrial water treatment, a reticular structure is formed in water, and small solid particles in the wastewater can be bonded together; PAM is an organic polymer and is used as a flocculating agent in industrial water treatment, and the organic polymer can enlarge solid particles, so that the solid particles sink, and the supernatant is colorless and transparent.
The final sedimentation tank is used for storing final sewage, the final sedimentation tank can be connected with the biological oxidation pond to discharge the sewage into the biological oxidation pond, and aerobic microorganisms are utilized to decompose organic matters in the pond due to oxygen generated by assimilation of surface dissolved oxygen into algae, so that the wastewater is treated.
The sludge tank is used for placing the sludge discharged by the solid-liquid separator, the primary sedimentation tank, the air floatation device, the UASB reactor and the secondary sedimentation tank, and treating the sludge through the sludge dewatering machine, and the dewatered sludge is sent to a temporary manure piling field and is transported or sent to a manure treatment plant.
The beneficial effects of the utility model are that, breed waste water treatment back to beasts and birds through this device, reduce beasts and birds and breed the harm of waste water to the environment. The waste water can be used in agriculture after being treated, and the separated manure residue can be composted for harmless treatment and then applied to farmlands, so that a livestock and poultry waste water treatment mode combining planting and breeding is realized.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the process of the present invention.
Detailed Description
Referring to fig. 1, the embodiment provides a cultivation wastewater treatment device, which includes a grid channel, a temporary storage tank, a solid-liquid separator, a primary sedimentation tank, a water collection tank, an air flotation device, a heating tank, a UASB reactor, a two-stage a/O reaction tank, a mixing tank, and a final sedimentation tank, which are connected in sequence through a sewage pipeline; the solid-liquid separator, the primary sedimentation tank, the air floatation device, the UASB reactor and the secondary sedimentation tank are respectively connected with the sludge tank through sludge pipelines; the sludge tank is connected with a temporary manure piling field through a sludge dewatering machine.
The method comprises the following steps that excrement wastewater firstly enters a grid channel, a mechanical grid is arranged in the grid channel, and impurities such as suspended matters, floating objects, gravels and the like with larger particle sizes in the wastewater are intercepted by the mechanical grid.
The excrement wastewater filtered by the grid channel enters a temporary storage tank for temporary storage, and is lifted to a solid-liquid separator by a pump in the temporary storage tank for solid-liquid separation; after the wastewater enters the solid-liquid separator, the wastewater is firstly subjected to solid-liquid separation through a fine screen, suspended matters in the raw water are intercepted, the wastewater slides downwards under the gravity to enter the spiral extrusion unit, the suspended matters are dewatered through spiral extrusion, the solid-liquid separation is realized, and the solid sludge can be conveyed to a sludge temporary storage yard.
And the waste water after solid-liquid separation in the temporary storage tank enters a primary sedimentation tank, the residual fine suspended matters are further separated in the primary sedimentation tank and then discharged into a water collection tank, the waste water in the water collection tank is subjected to water-gas-particle three-phase separation through an air floatation device, and a part of sludge in the primary sedimentation tank is discharged into a sludge tank.
The air floatation device is characterized in that air is introduced into water in a micro-bubble mode, the micro-bubbles are adhered to particles suspended in the water to form a water-gas-particle three-phase mixed system, and after the particles are adhered with the bubbles, the particles float upwards on the water surface when the density is smaller than that of the water to form a scum layer which is separated from the water. The air floatation device is connected with a PAC and PAM feeding pipe, the PAC is polyaluminium chloride and is used for coagulation in industrial water treatment, a reticular structure is formed in water, and small solid particles in wastewater can be bonded together; PAM is an organic polymer and is used as a flocculating agent in industrial water treatment, and the organic polymer can enlarge solid particles, so that the solid particles sink, and the supernatant is colorless and transparent.
The wastewater treated by the air floatation device enters a heating tank for heating, and is lifted to a UASB reactor by a pump for anaerobic fermentation. The central component in the UASB reactor is a three-phase separator that can separate gas, water and sludge under turbulent flow of water. The wastewater enters through a water distribution system at the bottom of the reactor and is fully contacted with flocculent anaerobic sludge in the reactor, most of organic sludge in the wastewater is converted into methane through degradation of anaerobic microorganisms, a small part of the organic sludge is converted into sludge, a mixture of the methane, the water and the sludge is separated through a three-phase separator, and a part of the sludge in the air flotation device is discharged into a sludge tank.
The UASB reactor is connected with a water seal device, because the marsh gas generated by the UASB reaction tank contains certain moisture which has great influence on the utilization of the marsh gas, and the moisture in the marsh gas and hydrogen sulfide act together to accelerate the corrosion of pipelines, valves, flowmeters and the like, the marsh gas desulfurization needs to be carried out simultaneously with dehydration treatment. Removing water in the biogas, increasing the quality of the produced biogas, utilizing the biogas, discharging a part of sludge in the UASB reactor into a sludge tank, and removing organic matters and ammonia nitrogen in the wastewater by the wastewater after the UASB reaction in an aerobic tank and an anoxic tank of a two-stage A/O reaction tank.
Discharging the wastewater in the aerobic tank into a secondary sedimentation tank for sludge-water separation, refluxing part of sludge to the anoxic tank to ensure the sludge amount of the aerobic system, and discharging part of sludge into a sludge tank; and then discharging the wastewater in the secondary sedimentation tank into a mixing tank, and adding PAC and PAM into the mixing tank to further stabilize the effluent quality and reduce the effluent chromaticity.
The mixing tank and the air floatation device are respectively connected with a PAC feeding pipe and a PAM feeding pipe, the PAC is polyaluminium chloride and is used for coagulation in industrial water treatment, a reticular structure is formed in water, and small solid particles in the wastewater can be bonded together; PAM is an organic polymer and is used as a flocculating agent in industrial water treatment, and the organic polymer can enlarge solid particles, so that the solid particles sink, and the supernatant is colorless and transparent. The wastewater in the mixing tank flows into a final sedimentation tank and is finally discharged into a biological oxidation pond; wherein the final sedimentation tank is also connected with a sludge tank, the sludge tank guides the sludge into a sludge dewatering machine through a sludge pump for dewatering, the dewatered sludge is transported to a temporary manure piling field and finally transported or sent to a manure treatment plant.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and are not to be construed as limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.
Claims (3)
1. A cultivation wastewater treatment device is characterized by comprising a grid channel, a temporary storage tank, a solid-liquid separator, a primary sedimentation tank, a water collecting tank, an air flotation device, a heating tank, a UASB reactor, a two-stage A/O reaction tank, a mixing tank and a final sedimentation tank which are sequentially connected through a sewage pipeline; the solid-liquid separator, the primary sedimentation tank, the air floatation device, the UASB reactor and the secondary sedimentation tank are respectively connected with the sludge tank through sludge pipelines; the sludge tank is connected with a sludge dewatering machine, and the UASB reactor is connected with a water seal device; the two-stage A/O reaction tank comprises an anoxic tank and an aerobic tank which are communicated, the aerobic tank is connected with the UASB reactor through a sludge pipeline, and the aerobic tank is connected with the secondary sedimentation tank.
2. The aquaculture wastewater treatment apparatus of claim 1 wherein a mechanical grid is disposed in the grid channel.
3. The aquaculture wastewater treatment device of claim 1, wherein the mixing tank and the air flotation device are respectively connected with PAC and PAM feeding pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921574644.6U CN210796123U (en) | 2019-09-21 | 2019-09-21 | Breeding wastewater treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921574644.6U CN210796123U (en) | 2019-09-21 | 2019-09-21 | Breeding wastewater treatment device |
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| CN210796123U true CN210796123U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482803A (en) * | 2019-09-21 | 2019-11-22 | 山东和正环保工程有限公司 | A kind of cultivating wastewater purification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482803A (en) * | 2019-09-21 | 2019-11-22 | 山东和正环保工程有限公司 | A kind of cultivating wastewater purification device |
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