CN219991364U - Treatment system for toilet sewage - Google Patents
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- CN219991364U CN219991364U CN202321126769.9U CN202321126769U CN219991364U CN 219991364 U CN219991364 U CN 219991364U CN 202321126769 U CN202321126769 U CN 202321126769U CN 219991364 U CN219991364 U CN 219991364U
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- 239000010865 sewage Substances 0.000 title claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000010802 sludge Substances 0.000 claims abstract description 55
- 238000005273 aeration Methods 0.000 claims abstract description 35
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 26
- 238000004062 sedimentation Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000010992 reflux Methods 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims description 25
- 239000000047 product Substances 0.000 claims description 12
- 239000006228 supernatant Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 5
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052698 phosphorus Inorganic materials 0.000 description 9
- 239000011574 phosphorus Substances 0.000 description 9
- 238000011010 flushing procedure Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 230000002550 fecal effect Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000361919 Metaphire sieboldi Species 0.000 description 1
- -1 and meanwhile Chemical compound 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a toilet sewage treatment system, which comprises a septic tank, a grid well, an adjusting tank, a primary anoxic tank, a primary anaerobic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank, a sedimentation tank, an aeration biological filter tank, a middle water tank and a disinfection tank which are connected in sequence; the device also comprises a sludge concentration tank and a hydrothermal reaction tank. One inlet of the sludge concentration tank is connected with one sludge outlet of the sedimentation tank, the other inlet of the sludge concentration tank is connected with a solid-liquid mixture outlet of the biological aerated filter, and a concentrated solution outlet in the sludge concentration tank is connected with a reflux port of the regulating tank; one inlet of the hydrothermal reaction tank is connected with the outlet of the sludge concentration tank, the other inlet of the hydrothermal reaction tank is connected with a septic product outlet of the first area of the septic tank, and a liquid organic carbon source outlet of the hydrothermal reaction tank is connected with the inlet of the secondary anoxic tank. The utility model realizes the reduction and harmless treatment of the sewage in the toilet, and has lower cost.
Description
Technical Field
The utility model relates to a toilet sewage treatment system.
Background
The rural domestic sewage treatment process generally comprises anaerobic/anoxic/aerobic processes, a biological aerated filter, a Membrane Bioreactor (MBR), a moving bed biological membrane reactor (MBBR), an artificial wetland, a stabilization pond, land percolation, an earthworm biological filter, integrated equipment and the like [ section is earlier than month, tang dynasty spring, wu Qingqing, and the like ]. The rural sewage current situation and treatment technology research progress [ J ]. Water treatment technology, 2018,44 (9): 27-31 ] ], wherein the A/O process can remove nitrogen and phosphorus, has lower operation cost, but the traditional A/O process has a plurality of defects, the nitrogen and phosphorus removal effect cannot meet the first-level A discharge standard specified in the pollutant discharge standard of urban sewage treatment plant GB18918-2002, and is easy to cause the phenomenon of black and odorous in rural river channels. In addition, rural domestic sewage septic tank products are often not used effectively, and environmental pollution is easy to cause; the biological reaction of sewage is easy to produce a lot of surplus sludge, and the problem of sludge treatment is also a big problem.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a toilet sewage treatment system, which realizes the reduction and harmless treatment of toilet sewage, has good water quality purification effect, and can realize recycling of the obtained product with lower cost.
The purpose of the utility model is realized in the following way: a sewage treatment system for a toilet comprises a septic tank, a grid well, an adjusting tank, a primary anoxic tank, a primary anaerobic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank, a sedimentation tank, an aeration biological filter tank, an intermediate water tank, a disinfection tank, a sludge concentration tank and a hydrothermal reaction tank, wherein,
the inlet of the septic tank is connected with the sewage outlet of the toilet through a pipeline; the septic tank is divided into a first area and a second area by a baffle, and the upper part of the baffle is provided with a water through hole;
the grid well is connected with an outlet of the second area of the septic tank;
the inlet of the regulating tank is connected with the outlet of the grid well;
the primary anoxic tank, the primary anaerobic tank, the primary aerobic tank, the secondary anoxic tank, the secondary aerobic tank and the sedimentation tank are sequentially connected with the outlet of the regulating tank;
a sludge outlet of the sedimentation tank is connected with a sludge supplementing port of the primary anoxic tank;
the water inlet of the aeration biological filter is connected with the supernatant outlet of the sedimentation tank, two layers of fillers are arranged in the aeration biological filter, the lower layer of fillers are sulfur-iron composite fillers, and the height is 2.0-2.5 m; the upper filler is solid biological filler obtained from the hydrothermal reaction tank, and the height is 1.0-1.5 m;
the water inlet of the middle water tank is connected with the supernatant outlet of the aeration biological filter;
the water inlet of the disinfection tank is connected with the water outlet of the middle water tank;
one inlet of the sludge concentration tank is connected with the other sludge discharge port of the sedimentation tank, the other inlet of the sludge concentration tank is connected with the solid-liquid mixture discharge port of the biological aerated filter, and the concentrated solution discharge port in the sludge concentration tank is connected with the reflux port of the regulating tank;
one inlet of the hydrothermal reaction tank is connected with the outlet of the sludge concentration tank, the other inlet of the hydrothermal reaction tank is connected with a septic product outlet of the first area of the septic tank, and a liquid organic carbon source outlet of the hydrothermal reaction tank is connected with the inlet of the secondary anoxic tank.
The toilet sewage treatment system is characterized in that a lifting pump is arranged in the regulating tank.
The sewage treatment system for the toilet, wherein the other water outlet of the middle water tank is connected with the back flushing water inlet of the biological aerated filter.
The toilet sewage treatment system of the utility model has the following characteristics:
1) The treatment system of the optimized anoxic/anaerobic/aerobic/anoxic/aerobic/aeration biological filter is adopted to treat the sewage in the toilet, the hydraulic retention time is longer, the reaction is ensured to be sufficient, the traditional internal reflux of nitrifying liquid is eliminated, and the construction and operation cost of the treatment system are reduced. In the reaction process, sewage can be fully contacted and degraded with microorganisms loaded by different fillers, so that the purification effect of the sewage is improved;
2) The carbon source required by the primary anoxic tank is directly provided by sewage, and the secondary anoxic tank is arranged to further improve the biological denitrification effect, the carbon source required by the secondary anoxic tank is produced by the waste hydrothermal reaction resource, so that other carbon sources are not required to be purchased additionally, the purpose of treating waste with waste is realized, and the running cost is reduced;
3) The aeration biological filter is internally provided with solid biological filler and sulfur-iron composite filler, wherein the solid biological filler is obtained by recycling waste products after sewage treatment, and the problems of difficult waste treatment and environmental pollution and the like are avoided. Under the condition of oxygen supply, the organic matters can be deeply oxidized and degraded, ammonia nitrogen is removed by nitrification reaction, total nitrogen is removed by autotrophic denitrification of sulfur and iron, chemical phosphorus removal and partial suspended matters removal are realized, and finally the effluent can stably reach the first-level A emission standard specified in pollutant emission standard of urban sewage treatment plant GB 18918-2002.
Drawings
FIG. 1 is a schematic structural view of a sewage treatment system for a bathroom of the present utility model;
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
Referring to fig. 1, the treatment system for sewage in a toilet of the present utility model comprises a septic tank 1, a grid well 2, an adjusting tank 3, a primary anoxic tank 4, a primary anaerobic tank 5, a primary aerobic tank 6, a secondary anoxic tank 7, a secondary aerobic tank 8, a sedimentation tank 9, an aeration biological filter 10, an intermediate water tank 11, a disinfection tank 12, a sludge concentration tank 13 and a hydrothermal reaction tank 14, wherein,
the inlet of the septic tank 1 is connected with the sewage outlet of the toilet through a pipeline; the septic tank 1 is divided into a first area and a second area by a partition board, and the upper part of the partition board is provided with a water through hole;
the grid well 2 is connected with an outlet of the second area of the septic tank 1;
the inlet of the regulating tank 3 is connected with the outlet of the grille well 2; a lifting pump is arranged in the regulating tank 3;
the primary anoxic tank 4, the primary anaerobic tank 5, the primary aerobic tank 6, the secondary anoxic tank 7, the secondary aerobic tank 8 and the sedimentation tank 9 are connected with the outlet of the regulating tank 3 in sequence;
a sludge outlet of the sedimentation tank 9 is connected with a sludge supplementing port of the primary anoxic tank 4;
the water inlet of the aeration biological filter 10 is connected with the supernatant outlet of the sedimentation tank 9, the aeration biological filter 10 is internally provided with two layers of fillers, the lower layer of fillers are sulfur-iron composite fillers, and the height is 2.0-2.5 m; the upper filler is solid biological filler obtained from the hydrothermal reaction tank 14, and the height is 1.0-1.5 m;
the water inlet of the middle water tank 11 is connected with the supernatant outlet of the aeration biological filter 10; a water outlet of the middle water tank 11 is connected with a back flushing water inlet of the biological aerated filter 10;
the water inlet of the disinfection tank 12 is connected with the other water outlet of the middle water tank 11;
the intermediate water tank 11 serves on the one hand as a transition, a part of the water is returned to the biological aerated filter 10 for backwashing of the biological aerated filter 10, and the remaining part of the water enters the disinfection tank 12. On the other hand, if the water quality does not reach the standard, the water enters the biological aerated filter 10 again, the hydraulic retention time is prolonged, and the advanced treatment is carried out;
one inlet of the sludge concentration tank 13 is connected with the other sludge outlet of the sedimentation tank 9, the other inlet of the sludge concentration tank 13 is connected with the solid-liquid mixture outlet of the biological aerated filter 10, and the concentrated solution outlet in the sludge concentration tank 13 is connected with the reflux port of the regulating tank 3;
one inlet of the hydrothermal reaction tank 14 is connected with the outlet of the sludge concentration tank 13, the other inlet of the hydrothermal reaction tank 14 is connected with a septic product discharge outlet of the first region of the septic tank 1, and a liquid organic carbon source discharge outlet of the hydrothermal reaction tank 14 is connected with the inlet of the secondary anoxic tank 7.
The toilet sewage treatment system provided by the utility model realizes reduction and harmless treatment of toilet sewage, has a good water quality purification effect, can realize recycling of the obtained product, has low cost, and solves the problem that the sewage after the toilet sewage treatment is difficult to reach the emission standard at present.
When the toilet sewage treatment system is used for treating the toilet sewage, the toilet sewage treatment system comprises the following steps:
firstly, sewage in a toilet enters a septic tank 1 for anaerobic digestion pretreatment, and enters a first area of the septic tank 1 first to enable the sewage to be fully digested and decomposed, and enable fecal residues to be separated from liquid, wherein the fecal residues are left as a fecal product in the first area of the septic tank 1, and the separated sewage to be treated flows into a second area of the septic tank 1 through water holes in a partition plate; sewage to be treated enters the grille well 2 through a pipeline, and the septic product enters the hydrothermal reaction tank 14;
step two, the grid well 2 intercepts suspended or floating sundries in the sewage to be treated, and then enters the regulating tank 3 to balance water quality and water quantity;
step three, lifting the sewage by a lifting pump in the regulating tank 3, and then, introducing the sewage into the primary anoxic tank 4 for denitrification treatment;
step four, sewage after denitrification treatment in the primary anoxic tank 4 sequentially enters the primary anaerobic tank 5, the primary aerobic tank 6, the secondary anoxic tank 7 and the secondary aerobic tank 8; in the first-stage anaerobic tank 5, microorganisms in the sewage decompose macromolecular organic matters into micromolecular organic matters, and simultaneously release phosphorus partially; the sewage is in a primary aerobic tank 6, a large amount of micromolecular organic pollutants are degraded, ammonia nitrogen is subjected to nitration reaction to generate nitrate, and part of the nitrate absorbs phosphorus; in the secondary anoxic tank 7, denitrifying bacteria in sewage take the residual organic matters and liquid organic carbon sources in the sewage as electron donors, and simultaneously take nitrate introduced by the primary aerobic tank 6 as an electron acceptor to strengthen the denitrification effect and fully release phosphorus; the sewage is deeply degraded with the residual organic pollutants in the secondary aerobic tank 8, and the residual ammonia nitrogen is nitrified to generate nitrate, and meanwhile, phosphorus is fully absorbed; the aeration of the primary aerobic tank 6 and the secondary aerobic tank 8 is intermittent aeration; the aeration time period of the primary aerobic tank 6 per day is 7:00-9: 00. 13:00-15: 00. 19:00-21:00, the aeration quantity enables the concentration of dissolved oxygen in water to be 1.4-2.5 mg/L. The aeration time period of each day of the secondary aerobic tank 8 is 10:00-12: 00. 16:00-18: 00. 22:00-24:00, the aeration quantity enables the concentration of dissolved oxygen in water to be 1.4-2.5 mg/L.
Fifthly, the solid-liquid mixture discharged from the secondary aerobic tank 8 enters a sedimentation tank 9 for solid-liquid separation, and 40% -80% of separated sludge flows into the primary anoxic tank 4 to supplement biological sludge so as to ensure that the primary anoxic tank 4 has enough sludge concentration; the excess sludge enters a sludge concentration tank 13; supernatant in the sedimentation tank 9 enters the biological aerated filter 10 for biochemical reaction, then passes through the intermediate water tank 11 to be transited into the disinfection tank 12 for ultraviolet disinfection, and finally effluent reaches the standard and is discharged; the aeration time period of the aeration biological filter 10 per day is 7:00-12: 00. 15:00-20: 00. 23:00-4:00; the aeration quantity enables the concentration of dissolved oxygen in water to be 2.0-3.0 mg/L; when the operation of the biological aerated filter 10 is blocked, air and water combined back flushing is adopted, the back flushing water comes from the middle water tank 11, and a back flushing solid-liquid mixture generated by back flushing enters the sludge concentration tank 13;
step six, the sludge concentration tank 13 is used for concentrating the surplus sludge obtained from the sedimentation tank 9 and the backwash solid-liquid mixture obtained from the biological aerated filter 10 for 10-20 hours, the concentration of the concentrated sludge is 20-30 g/L, the concentrated sludge enters the hydrothermal reaction tank 14, and the concentrated solution after being concentrated by the sludge concentration tank 13 flows into the regulating tank 3 for circulation treatment;
seventhly, the hydrothermal reaction tank 14 carries out chemical reaction on the concentrated sludge obtained from the sludge concentration tank 13 and the septic product obtained from the septic tank 1, wherein the reaction temperature is 140-240 ℃ and the reaction time is 1.0-3.5 h; the solid biological filler obtained after the reaction is used as the upper filler of the aeration biological filter 10, and the liquid organic carbon source obtained after the reaction is used as the denitrification carbon source of the secondary anoxic tank 7.
The toilet sewage treatment system using the toilet sewage treatment system of the present utility model will now be described in a specific embodiment:
sewage enters into a toilet of a rural resident for 1m 3 Anaerobic digestion pretreatment is carried out on the septic tank 1 to obtain sewage to be treated and septic products, the chemical oxygen demand concentration of the sewage to be treated is 201.3-230.8 mg/L, the ammonia nitrogen concentration is 29.4-31.4 mg/L, the total nitrogen concentration is 40.4-46.3 mg/L, the total phosphorus concentration is 2.8-3.1 mg/L, the pretreated effluent is conveyed to a grid well 2 through a main pipe network, and the grid well 2 entraps and separates large-particle pollutants, other suspended matters and floating matters in the sewage to eliminate damage to a treatment system. The sewage then enters the regulating tank 3 to balance water quality and water quantity, partial impact load is resisted, a lifting pump is arranged in the regulating tank 3, the sewage is lifted into the primary anoxic tank 4 to be subjected to denitrification treatment, and then flows into the primary anaerobic tank 5, the primary aerobic tank 6, the secondary anoxic tank 7 and the secondary aerobic tank 8 to react through pipelines in sequence, wherein the aeration time period of each day of the primary aerobic tank 6 is 7:00-9: 00. 13:00-15: 00. 19:00-21:00, the aeration quantity keeps the concentration of dissolved oxygen in water to be 2.0mg/L; the aeration time period of the secondary aerobic tank 8 per day is 10:00-12: 00. 16:00-18: 00. 22:00-24:00, the aeration quantity keeps the concentration of dissolved oxygen in water to be 2.5mg/L. The reacted solid-liquid mixture is subjected to solid-liquid separation in a sedimentation tank 9, wherein 50% of sludge flows into a primary anoxic tank 4 to supplement biological sludge so as to ensure sufficient sludge concentration of a system, the rest 50% of sludge completely enters a sludge concentration tank 9, supernatant fluid after sedimentation in the sedimentation tank 9 enters a biological aerated filter 10 for biochemical reaction, a first layer of filler in the biological aerated filter 10 is a composite filler of sulfur and iron, the height is 2.2m, and a second layer of filler is a solid biological filler obtained in a hydrothermal reaction tank 14, and the height is 1.2m; the aeration time period of the aeration biological filter 10 per day is 7:00-12: 00. 15:00-20: 00. 23:00-4:00; aeration quantity is used for keeping the concentration of dissolved oxygen in water to be 2.8mg/L; when the aeration biological filter 10 is blocked, air and water combined back flushing is adopted. The solid-liquid mixture generated by back flushing of the aeration biological filter 10 enters a sludge concentration tank 13, after the sludge concentration tank 13 is concentrated for 16 hours, the sludge concentration is 26g/L, the concentrated solution flows into a regulating tank 3 for circulating treatment, and the sludge concentrated by the sludge concentration tank 13 and the septic product generated by the septic tank 1 enterAnd (3) feeding the wastewater into a hydrothermal reaction tank 14, wherein the reaction temperature of the hydrothermal reaction tank 14 is 190 ℃, the reaction time is 2.5h, and the obtained liquid organic carbon source is used as a denitrification carbon source of the secondary anoxic tank 7. The effluent treated by the aeration biological filter 10 passes through the intermediate water tank 11 and the ultraviolet disinfection tank 12, the chemical oxygen demand concentration of the treated effluent is 19.9-23.2 mg/L, the ammonia nitrogen concentration is 2.1-3.3 mg/L, the total nitrogen concentration is 11.7-13.9 mg/L, the total phosphorus concentration is 0.27-0.39 mg/L, and finally the effluent can stably reach the first-level A emission standard specified in pollutant emission Standard of urban sewage treatment plant GB 18918-2002.
The above embodiments are provided for illustrating the present utility model and not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present utility model, and thus all equivalent technical solutions should be defined by the claims.
Claims (3)
1. A sewage treatment system for a toilet comprises a septic tank, a grid well, an adjusting tank, a primary anoxic tank, a primary anaerobic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank, a sedimentation tank, an aeration biological filter tank, an intermediate water tank, a disinfection tank, a sludge concentration tank and a hydrothermal reaction tank, and is characterized in that,
the inlet of the septic tank is connected with the sewage outlet of the toilet through a pipeline; the septic tank is divided into a first area and a second area by a baffle, and the upper part of the baffle is provided with a water through hole;
the grid well is connected with an outlet of the second area of the septic tank;
the inlet of the regulating tank is connected with the outlet of the grid well;
the primary anoxic tank, the primary anaerobic tank, the primary aerobic tank, the secondary anoxic tank, the secondary aerobic tank and the sedimentation tank are sequentially connected with the outlet of the regulating tank;
a sludge outlet of the sedimentation tank is connected with a sludge supplementing port of the primary anoxic tank;
the water inlet of the aeration biological filter is connected with the supernatant outlet of the sedimentation tank, two layers of fillers are arranged in the aeration biological filter, the lower layer of fillers are sulfur-iron composite fillers, and the height is 2.0-2.5 m; the upper filler is solid biological filler obtained from the hydrothermal reaction tank, and the height is 1.0-1.5 m;
the water inlet of the middle water tank is connected with the supernatant outlet of the aeration biological filter;
the water inlet of the disinfection tank is connected with the water outlet of the middle water tank;
one inlet of the sludge concentration tank is connected with the other sludge discharge port of the sedimentation tank, the other inlet of the sludge concentration tank is connected with the solid-liquid mixture discharge port of the biological aerated filter, and the concentrated solution discharge port in the sludge concentration tank is connected with the reflux port of the regulating tank;
one inlet of the hydrothermal reaction tank is connected with the outlet of the sludge concentration tank, the other inlet of the hydrothermal reaction tank is connected with a septic product outlet of the first area of the septic tank, and a liquid organic carbon source outlet of the hydrothermal reaction tank is connected with the inlet of the secondary anoxic tank.
2. The toilet wastewater treatment system of claim 1, wherein a lift pump is provided in the regulating reservoir.
3. The toilet wastewater treatment system of claim 1, wherein the other water outlet of the intermediate basin is connected to the biological aerated filter backwash water inlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321126769.9U CN219991364U (en) | 2023-05-11 | 2023-05-11 | Treatment system for toilet sewage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321126769.9U CN219991364U (en) | 2023-05-11 | 2023-05-11 | Treatment system for toilet sewage |
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| CN219991364U true CN219991364U (en) | 2023-11-10 |
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| CN202321126769.9U Active CN219991364U (en) | 2023-05-11 | 2023-05-11 | Treatment system for toilet sewage |
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| CN (1) | CN219991364U (en) |
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