CN214735229U - Sewage treatment system of multistage ecological pond - Google Patents

Abstract

The utility model discloses a sewage treatment system of multistage ecological pond, including the coagulating sedimentation pond, store up mud district, one-level contact oxidation pond, second grade contact oxidation pond, mud return pond, wetland purification pond, the coagulating sedimentation pond is connected with and cuts dirty suction device, the coagulating sedimentation pond with store up and be equipped with the mud discharging device between the mud district, the coagulating sedimentation pond is linked together with one-level contact oxidation pond, second grade contact oxidation pond is linked together with one-level contact oxidation pond, mud return pond is linked together with second grade contact oxidation pond, wetland purification pond respectively, the wetland purifies the pond and is connected with and purifies eduction gear. The utility model discloses a function in each pond is realized, progressively handles the pollutant in the sewage, overcomes the defect of current constructed wetland, stable pond etc. and the sewage treatment effect is showing to the applicability is strong, and usable current pond etc. are reformed transform and can be realized.

Description

Sewage treatment system of multistage ecological pond

Technical Field

The utility model relates to a sewage prevention and treatment technical field, in particular to sewage treatment system in multistage ecological pond.

Background

The treatment of domestic sewage in rural and urban areas is the key point of environmental protection work. For areas with delayed pipe network construction or insufficient peripheral environment-friendly equipment, the domestic sewage treatment has great difficulty. One of the mainstream directions in development at present is to perform sewage treatment by using an artificial wetland. The artificial wetland is mainly used for purifying sewage by utilizing physical action, chemical action and biological action in a natural system. Organic matters, nitrogen, phosphorus and other harmful substances in the sewage are mainly adsorbed and removed through the filter material of the artificial wetland, a small amount of microorganisms can be adsorbed in gaps of the filter material, and the microorganisms can remove the organic matters, nitrogen and phosphorus in the sewage through the self-action of the microorganisms. However, a small amount of microorganisms can be adsorbed in the filter material, free microorganisms and metabolites thereof in the filter material easily cause blockage of the filter material, so that the treatment efficiency is influenced, and the filter material is easy to suffer from plant diseases and insect pests after long-term operation. In addition, stabilization pond technology is another mainstream direction that is currently being developed. The stabilization pond technology degrades organic matters in the sewage through the comprehensive action of various organisms such as microorganisms, aquatic plants and the like in the original sewage and the accompanying physical and chemical processes, so that the sewage is purified, and the stabilization pond technology has the advantages of low sewage treatment energy consumption, convenience in operation, management and maintenance and the like. However, the method also has other disadvantages, such as lower organic load of sewage treatment, larger occupied area, larger influence factors of the sewage treatment effect caused by external climate, and the like; in addition, the bred suspended algae can easily cause the water quality of the effluent to be increased and the treatment effect to be unstable. Therefore, a sewage treatment system of a multi-stage ecological pond is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art, provide a sewage treatment system in multistage ecological pond.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a sewage treatment system of a multistage ecological pond comprises a coagulating sedimentation pond, a sludge storage area, a primary contact oxidation pond, a secondary contact oxidation pond, a sludge return pond and a wetland purification pond, wherein the coagulating sedimentation pond is connected with a sludge interception suction device, a sludge discharge device is arranged between the coagulating sedimentation pond and the sludge storage area, the coagulating sedimentation pond is communicated with the primary contact oxidation pond, the secondary contact oxidation pond is communicated with the primary contact oxidation pond, the sludge return pond is respectively communicated with the secondary contact oxidation pond and the wetland purification pond, and the wetland purification pond is connected with a purification discharge device;

the primary contact oxidation pond comprises a microorganism inhabitation structure, a flow guide structure and an oxygen aeration device, the microorganism inhabitation structure is arranged on the periphery of the primary contact oxidation pond, the oxygen aeration device is used for providing active oxygen and strong oxidizing ion groups for microorganisms, and the flow guide structure is arranged around the oxygen aeration device to form flow guide in the primary contact oxidation pond; the structure of the secondary contact oxidation pond is completely the same as that of the primary contact oxidation pond;

an ecological floating bed is arranged around the wetland purification pond, emergent aquatic plants and floating plants are planted above the ecological floating bed, and root systems of the emergent aquatic plants and the floating plants are exposed below the ecological floating bed; submerged plants are planted at the bottom of the wetland purification pond.

Further elaborating, the coagulating sedimentation pond is provided with a primary filtering structure for primarily filtering sewage at the sewage intercepting and sucking device.

Further elaborating, HDPE pipes are adopted to communicate between the coagulating sedimentation pond and the first-stage contact oxidation pond, between the first-stage contact oxidation pond and the second-stage contact oxidation pond, between the second-stage contact oxidation pond and the sludge return pond, and between the sludge return pond and the wetland purification pond.

Further elaborating, the mud discharging device comprises a float type mud discharging pump, and the float type mud discharging pump pumps mud in the coagulating sedimentation pond into the mud storage area.

Further elaborating, the microorganism inhabitation structure comprises a support, a suspension rope and biological filler, wherein one end of the suspension rope is connected with the support, and the other end of the suspension rope is connected with the biological filler.

The beneficial effects of the utility model reside in that:

one, the utility model discloses a function in each pond is realized, progressively handles the pollutant in the sewage, overcomes the defect of current constructed wetland, stable pond etc. and the sewage treatment effect is showing to the applicability is strong, can realize reforming transform such as usable current pond.

And the front coagulating sedimentation pond can effectively remove suspended matters and partial organic matters, reduce pollution load and improve biodegradability, and the provided float sludge pump can regularly pump the flocculating constituent to a sludge storage area for in-situ reduction and harmless treatment.

And thirdly, different filler densities and blast volumes can be set in each contact oxidation pond according to different pollution loads, so that pollutants in the sewage can be used as nutrient substances of microorganisms, the pollutants in the sewage can be adsorbed and absorbed by activated sludge in each contact oxidation pond and microorganisms of different species on biological fillers, the microorganisms with different advantages are subjected to work division and cooperation under different loads, the pollutants are efficiently degraded, finally the pollutants are changed into CO2, H2O, N2 and the like, phosphorus is deposited at the bottom in a phosphate precipitation mode in biological sludge, and the phosphorus can be discharged through periodic sludge discharge, so that the sewage is degraded and purified.

And fourthly, the wetland purification pond can realize regular sludge backflow, so that sludge is digested, and activated sludge and microorganisms are reused, so that the concentration of the activated sludge and the concentration of the microorganisms in each contact oxidation pond are maintained, and the impact load resistance and the treatment efficiency of each contact oxidation pond are improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of an oxygen exposure apparatus.

Fig. 3 is a schematic structural view of the flow guide structure.

FIG. 4 is a schematic structural diagram of the ecological floating bed.

Reference numerals: 10. coagulating and settling the pond; 11. a sewage interception suction device; 111. a primary filtering structure; 20. a sludge storage area; 21. a sludge discharge device; 30. a first-stage contact oxidation pond; 31. a microbial habitat structure; 32. a flow guide structure; 33. an oxygen exposure device; 40. a secondary contact oxidation pond; 50. returning sludge to the pond; 60. a wetland purification pond; 61. a purge drain; 62. an ecological floating bed.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to the attached drawings 1 to 4, the sewage treatment system of the multistage ecological pond comprises a coagulating sedimentation pond 10, a sludge storage area 20, a first-stage contact oxidation pond 30, a second-stage contact oxidation pond 40, a sludge return pond 50 and a wetland purification pond 60, wherein the coagulating sedimentation pond 10 is connected with a sludge interception suction device 11, a sludge discharge device 21 is arranged between the coagulating sedimentation pond 10 and the sludge storage area 20, the coagulating sedimentation pond 10 is communicated with the first-stage contact oxidation pond 30, the second-stage contact oxidation pond 40 is communicated with the first-stage contact oxidation pond 30, the sludge return pond 50 is respectively communicated with the second-stage contact oxidation pond 40 and the wetland purification pond 60, the wetland purification pond 60 can realize periodic sludge return, so that sludge is digested and activated sludge and microorganisms are reused, the activated sludge concentration and the microorganism concentration of each stage of contact oxidation pond are further kept, and the impact load resistance and the treatment efficiency of each stage of contact oxidation pond are improved, the wetland purification pond 60 is connected with a purification discharge device 61;

referring to fig. 1, the primary contact oxidation pond 30 includes a microorganism inhabitation structure 31, a flow guide structure 32 and an oxygen aeration device 33, the microorganism inhabitation structure 31 is arranged around the primary contact oxidation pond 30, the oxygen aeration device 33 is used for providing active oxygen and strong oxidizing ionic groups for microorganisms, and the flow guide structure 32 is arranged around the oxygen aeration device 33 to form a flow guide in the primary contact oxidation pond 30; the structure of the secondary contact oxidation pond 40 is completely the same as that of the primary contact oxidation pond 30;

referring to the attached drawing 1, an ecological floating bed 62 is arranged around the wetland purification pond 60, as shown in the attached drawing 4, emergent aquatic plants and floating plants are planted above the ecological floating bed 62, and root systems of the emergent aquatic plants and the floating plants are exposed below the ecological floating bed 62, so that the huge root systems can absorb nutrient elements from deep bottom mud, the content of the nutrient elements in the bottom mud is reduced, ammonia nitrogen is reduced, and the water quality is further improved; wherein the emergent aquatic plants mainly comprise canna, celosia, calamus, and the like, the floating plants mainly comprise water lily and the like, the ecological floating bed 62 can generate a damping effect on water flow, wind wave disturbance is reduced, suspended matters are settled, and other symbiotic biological communities on the ecological floating bed 62 can also play a role in purifying water quality; submerged plants are planted at the bottom of the wetland purification pond 60, mainly comprising eel grass, golden fish algae and watermifoil, and can absorb N, P and other nutritive salts in a water body in the growth process and secrete allelopathic substances to inhibit the growth of phytoplankton in the pond; meanwhile, the device can play a role in reducing waves and waves in the water body, thereby lightening resuspension of the sediment, reducing suspended matters in the water body, further purifying the water body, improving the transparency of the water body and keeping the water body in a clear water state.

The coagulating sedimentation pond 10 is provided with a primary filtering structure 111 for primarily filtering sewage at the sewage intercepting and sucking device 11. Specifically, the primary filtering structure 111 includes a fine grid, and the sewage pumped by the sewage interception suction device 11 passes through the fine grid for primary filtering and then flows into the coagulating sedimentation pond 10.

HDPE pipes are communicated between the coagulating sedimentation pond 10 and the first-stage contact oxidation pond 30, between the first-stage contact oxidation pond 30 and the second-stage contact oxidation pond 40, between the second-stage contact oxidation pond 40 and the sludge return pond 50, and between the sludge return pond 50 and the wetland purification pond 60.

The sludge discharge device 21 comprises a float type sludge discharge pump which pumps sludge in the coagulation sedimentation pond 10 into the sludge storage area 20. The coagulation sedimentation pond 10 performs physicochemical treatment on the sewage, and by adding chemical agents such as flocculating agents, coagulants and the like into the sewage, particles which are difficult to precipitate in the water can be mutually polymerized to form colloid through a compressed double electric layer, and the colloid is combined with impurities in the water body to form a larger flocculating constituent. The flocculating constituent has strong adsorption capacity, so that suspended matters can be adsorbed, and partial bacteria and soluble substances can be adsorbed. The flocculating constituent is gradually increased and sunk in the continuous adsorption process, and a sludge settling concentration area is gradually formed. The float sludge pump can regularly pump the flocculating constituent in the sludge settling concentration area to the sludge storage area 20, and the sludge storage area 20 carries out solidification and outward transportation treatment on the flocculating constituent.

The microorganism inhabitation structure 31 comprises a support, a suspension rope and biological filler, wherein one end of the suspension rope is connected with the support, and the other end of the suspension rope is connected with the biological filler. In particular, the biological filler is a braid biological filler and can provide a place for the growth and propagation of microorganisms. After the microorganisms form a stable biological film on the biological filler, the biological film has larger surface area and strong capability of degrading and converting organic matters, so that a large amount of pollutants can be adsorbed for degrading and converting. Referring to fig. 2, the aeration device 33 specifically includes a submerged fan and a matching air pipe, the outlet of the submerged fan is a micro-nano aeration disc, and the micro-nano aeration disc can provide sufficient active oxygen and strong oxidizing ion clusters for the microorganisms for purifying and treating sewage. The micro-nano bubbles which can be generated by the oxygen exposure device promote the dissolution rate in water to exceed 85 percent, the concentration of dissolved oxygen can reach more than saturated concentration, and the dissolved oxygen is remained in the water for a long time; along with the consumption of the dissolved oxygen, the oxygen aeration device can continuously supplement active oxygen to the water, and the efficiency is higher. Referring to fig. 3, the flow guiding structure 32 is a soft enclosure, and under the action of the flow guiding structure 32, the oxygen aeration device 33 can form flow guiding when ensuring sufficient reaction of active oxygen, thereby increasing contact efficiency and reducing dead corner areas.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications to the above embodiments are all within the scope of the technical solution of the present invention.

Claims (5)

1. The utility model provides a sewage treatment system in multistage ecological pond which characterized in that: the system comprises a coagulating sedimentation pond (10), a sludge storage area (20), a primary contact oxidation pond (30), a secondary contact oxidation pond (40), a sludge return pond (50) and a wetland purification pond (60), wherein the coagulating sedimentation pond (10) is connected with a sludge interception suction device (11), a sludge discharge device (21) is arranged between the coagulating sedimentation pond (10) and the sludge storage area (20), the coagulating sedimentation pond (10) is communicated with the primary contact oxidation pond (30), the secondary contact oxidation pond (40) is communicated with the primary contact oxidation pond (30), the sludge return pond (50) is respectively communicated with the secondary contact oxidation pond (40) and the wetland purification pond (60), and the wetland purification pond (60) is connected with a purification discharge device (61);

the primary contact oxidation pond (30) comprises a microorganism inhabitation structure (31), a flow guide structure (32) and an oxygen aeration device (33), the microorganism inhabitation structure (31) is arranged at the periphery of the primary contact oxidation pond (30), the oxygen aeration device (33) is used for providing active oxygen and strong oxidizing ionic groups for microorganisms, and the flow guide structure (32) is arranged around the oxygen aeration device (33) to form flow guide in the primary contact oxidation pond (30); the structure of the secondary contact oxidation pond (40) is completely the same as that of the primary contact oxidation pond (30);

an ecological floating bed (62) is arranged around the wetland purification pond (60), emergent aquatic plants and floating plants are planted above the ecological floating bed (62), and root systems of the emergent aquatic plants and the floating plants are exposed below the ecological floating bed (62); submerged plants are planted at the bottom of the wetland purification pond (60).

2. The sewage treatment system of the multi-stage ecological pond according to claim 1, wherein: the coagulating sedimentation pond (10) is provided with a primary filtering structure (111) for primarily filtering sewage at the sewage intercepting and sucking device (11).

3. The sewage treatment system of the multi-stage ecological pond according to claim 1, wherein: HDPE pipes are communicated between the coagulating sedimentation pond (10) and the primary contact oxidation pond (30), between the primary contact oxidation pond (30) and the secondary contact oxidation pond (40), between the secondary contact oxidation pond (40) and the sludge return pond (50), and between the sludge return pond (50) and the wetland purification pond (60).

4. The sewage treatment system of the multi-stage ecological pond according to claim 1, wherein: the sludge discharge device (21) comprises a float type sludge discharge pump, and the float type sludge discharge pump pumps sludge in the coagulating sedimentation pond (10) into the sludge storage area (20).

5. The sewage treatment system of the multi-stage ecological pond according to claim 1, wherein: the microorganism inhabitation structure (31) comprises a support, a suspension rope and biological filler, wherein one end of the suspension rope is connected with the support, and the other end of the suspension rope is connected with the biological filler.

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