CN113998834A - Urban sewage comprehensive treatment and efficient recycling system - Google Patents
Urban sewage comprehensive treatment and efficient recycling system Download PDFInfo
- Publication number
- CN113998834A CN113998834A CN202111152972.9A CN202111152972A CN113998834A CN 113998834 A CN113998834 A CN 113998834A CN 202111152972 A CN202111152972 A CN 202111152972A CN 113998834 A CN113998834 A CN 113998834A
- Authority
- CN
- China
- Prior art keywords
- tank
- treatment
- sludge
- water
- adsorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 71
- 238000004064 recycling Methods 0.000 title claims abstract description 24
- 239000012528 membrane Substances 0.000 claims abstract description 89
- 238000006731 degradation reaction Methods 0.000 claims abstract description 37
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 33
- 238000005273 aeration Methods 0.000 claims abstract description 32
- 239000010842 industrial wastewater Substances 0.000 claims abstract description 18
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 7
- 239000003651 drinking water Substances 0.000 claims abstract description 4
- 235000020188 drinking water Nutrition 0.000 claims abstract description 4
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 4
- 239000008235 industrial water Substances 0.000 claims abstract description 3
- 239000010802 sludge Substances 0.000 claims description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 59
- 230000029087 digestion Effects 0.000 claims description 18
- 208000005156 Dehydration Diseases 0.000 claims description 17
- 230000018044 dehydration Effects 0.000 claims description 17
- 238000006297 dehydration reaction Methods 0.000 claims description 17
- 238000009270 solid waste treatment Methods 0.000 claims description 17
- 238000004062 sedimentation Methods 0.000 claims description 13
- 230000015556 catabolic process Effects 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 230000014759 maintenance of location Effects 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 238000010907 mechanical stirring Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/20—Dewatering by mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a comprehensive treatment and efficient recycling system for urban sewage, which comprises: the domestic sewage treatment system is provided with a lifting pump station, a coarse grid, a fine grid, an aeration grit chamber, an adsorption-degradation tank, a multi-stage A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank which are sequentially arranged along the flow direction of sewage; domestic sewage in profound flows into a drinking water source place after passing through a lifting pump station, a coarse grid, a fine grid, an aeration grit chamber, an adsorption-degradation tank, a multi-stage A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank of the domestic sewage treatment system in turn and then is subjected to ultraviolet light disinfection treatment; the industrial wastewater treatment system is provided with a lifting pump station, a coarse grid, a fine grid, an adsorption-degradation tank, a single-group A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank which are sequentially arranged along the wastewater flowing direction; the industrial wastewater in profound is treated by a lifting pump station, a coarse grid, a fine grid, an adsorption-degradation pool, a single-group A/O pool, an MBR membrane pool and an R/O reverse osmosis membrane pool of the industrial wastewater treatment system in sequence and then is used as industrial water.
Description
Technical Field
The invention relates to a comprehensive treatment and efficient recycling system for urban sewage, which is suitable for the field of sewage treatment engineering.
Background
With the development of social productivity, especially in the period since the industrial revolution, the increasing of water for people to live and produce not only causes the rising of water resource utilization, but also causes the serious waste of various water resources. The water resource crisis has become a key for restricting the development of economy and society of various countries in the world, and also becomes a main topic and a complex problem faced by national policy, economy and technology.
At present, due to the continuous increase of population, the contradiction between the increasing water supply demand and the water resource shortage of people is increasingly prominent, and the problem of the water resource shortage is more serious, and the reasons are two: firstly, because the water resource is limited, and secondly, the generated sewage is more and more, the treated sewage is not effectively utilized; in turn, the urban environment and construction thereof are seriously affected by the shortage of water resources and the problem of sewage treatment.
Most of the existing sewage treatment systems reach the national first-class A standard in GB18918-2002 discharge Standard of pollutants for municipal wastewater treatment plants after treatment, and the treated water is generally discharged into a natural river channel and cannot be directly utilized. The waste water or sewage is recycled to a production system or domestic miscellaneous use after secondary treatment and advanced treatment, so that the waste water or sewage is called sewage recycling, the reclaimed water recycling is one of the main ways of sewage resource utilization, and the innovative sewage treatment process plays a key role in relieving the situation of insufficient water resources and people in China. The sewage reuse range is wide, and the supply water and the domestic water of the water body are recycled in industry. The sewage reuse can not only effectively save and utilize limited and precious fresh water resources, but also reduce the discharge amount of sewage or waste water, lighten the pollution of water environment, relieve the overload phenomenon of urban drainage pipelines, and have obvious social benefit, environmental benefit and economic benefit.
Nowadays, water resources are increasingly scarce, and the demand for sewage recycling is increasingly large. The most adopted process flows of the domestic sewage treatment process at present comprise: removing suspended matters by using a coarse and fine grid, and treating in an aeration grit chamber by using the traditional A2And the O tank performs nitrogen and phosphorus removal treatment on the sewage, and the sewage is filtered by the high-efficiency sedimentation tank and the fiber cloth filter tank, sterilized and discharged. Although the sewage can be purified after being treated by the conventional water treatment facility, the sewage can not meet the recycling requirement even if the sewage meets the highest requirement of the urban sewage discharge standard (GB18918-2002), namely the discharge standard of the primary standard A.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problems, the system for comprehensively treating and efficiently recycling the urban sewage is provided.
The technical scheme adopted by the invention is as follows: the utility model provides a municipal sewage comprehensive treatment and high-efficient system of recycling which characterized in that includes:
the domestic sewage treatment system is provided with a lifting pump station, a coarse grid, a fine grid, an aeration grit chamber, an adsorption-degradation tank, a multi-stage A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank which are sequentially arranged along the flow direction of sewage; domestic sewage in profound flows into a drinking water source place after passing through a lifting pump station, a coarse grid, a fine grid, an aeration grit chamber, an adsorption-degradation tank, a multi-stage A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank of the domestic sewage treatment system in turn and then is subjected to ultraviolet light disinfection treatment;
the industrial wastewater treatment system is provided with a lifting pump station, a coarse grid, a fine grid, an adsorption-degradation tank, a single-group A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank which are sequentially arranged along the wastewater flowing direction; the industrial wastewater in profound is treated by a lifting pump station, a coarse grid, a fine grid, an adsorption-degradation pool, a single-group A/O pool, an MBR membrane pool and an R/O reverse osmosis membrane pool of the industrial wastewater treatment system in sequence and then is used as industrial water.
Further comprising:
and the sludge treatment system is used for collecting and treating the precipitated sludge in the adsorption-degradation tank and the A/O tank in the domestic sewage treatment system and the industrial wastewater treatment system.
The sludge treatment system is provided with a gravity concentration tank, a sludge pretreatment tank, an anaerobic digestion tank and a mechanical dehydration treatment workshop;
the precipitated sludge from the adsorption-degradation tank sequentially passes through a gravity concentration tank, an anaerobic digestion tank and a mechanical dehydration treatment workshop to generate dehydrated sludge cakes;
and the settled sludge from the A/O tank sequentially passes through a gravity concentration tank, a sludge pretreatment tank, an anaerobic digestion tank and a mechanical dehydration treatment workshop to generate dehydrated sludge cakes.
Further comprising:
a solid waste treatment plant is provided with an incinerator for incinerating dehydrated sludge cakes generated in a mechanical dehydration treatment workshop by utilizing methane generated by an anaerobic digestion tank in a sludge treatment system.
The water outlet of the MBR membrane tank is divided into two paths, one path is connected to the R/O reverse osmosis membrane tank, the other path is connected to a solid waste treatment plant through a water delivery pipe to supply production water for the solid waste treatment plant, and a tail water discharge port is arranged on the water delivery pipe and can control tail water to be discharged to a nearby river or sea through a valve.
The aeration grit chamber be a rectangle channel, set up the aeration pipe in the channel, the aeration pipe is installed in driving this aeration pipe pivoted axis of rotation.
The adsorption-degradation tank comprises an adsorption tank, a degradation tank and an inclined plate sedimentation tank which are arranged in sequence along the water flow direction, wherein
The absorption tank is provided with hydraulic retention time of 30min, sludge age of 0.3-0.5 d and dissolved oxygen concentration of 0.2-0.7 mg/L;
the degradation pool is set for hydraulic retention time of 2-3 h, the sludge age is 15-20 d, and the concentration of dissolved oxygen is controlled to be 1-2 mg/L;
inclined plateThe supernatant of the sedimentation tank flows to the next treatment unit, and the sludge at the bottom flows back to the adsorption tank and the degradation tank; the inclined plate sedimentation tank is internally provided with BOD5The concentration monitoring device and the sludge reflux ratio of the inclined plate sedimentation tank are based on BOD5And adjusting the concentration monitoring value.
The A/O pond have anoxic zone and aerobic zone, wherein every anoxic zone is inside to set up a plurality of diversion baffles, equidistance staggered arrangement: an aeration device is arranged at the bottom of the aerobic zone, and 50-100% of sludge in the aerobic zone flows back to the anoxic zone through a sludge pump.
The MBR membrane tank is a filter tank formed by connecting an MBR membrane frame and an MBR membrane, the membrane of the MBR membrane tank is a flat membrane, and the membrane flux is 0.2-0.3 m3/m2D, arranging a plurality of membrane groups which are all provided with lifting devices, lengthening a filtering path in a serial connection mode, wherein one membrane group is arranged as a standby membrane group; the MBR membrane tank is provided with a variable frequency pump, the flow rate is adjusted according to the output sewage quantity, and the treatment load of the MBR membrane tank is controlled.
The R/O reverse osmosis membrane pool comprises an R/O reverse osmosis membrane device shell, a water inlet high-speed heater and a water inlet side high-pressure pump, wherein the water temperature is ensured by the heater while the water inlet pipe conveys the incoming water and the reverse osmosis is carried out under the influence of pressure difference by the aid of the high-pressure pump on the water inlet side, so that the cleanness of the R/O reverse osmosis membrane is improved, and the water passing amount is increased.
The sludge pretreatment tank is subjected to high-temperature pyrohydrolysis treatment, wherein the high temperature is 155-170 ℃, the pressure is 0.6-1.6 MPa, and the reaction time is 15-90 min.
The anaerobic digestion tank adopts mechanical stirring.
The daily drainage of the solid waste treatment plant is provided with an oil separation tank, and scum oil stains in the oil separation tank can be input into the anaerobic digestion tank for disposal.
The invention has the beneficial effects that:
(1) the invention carries out distinguishing treatment according to two different incoming water sources of domestic sewage and industrial wastewater, the BOD/TN in general domestic sewage is more than 5, and a multi-stage A/O pool can be adopted with higher biochemical degree to fully decompose organic matters; the biochemical property of the industrial wastewater is weak, a single group of A/O (anaerobic/oxic) pool is adopted, the layout is reasonable, and the maximum efficiency of a water treatment structure is fully exerted.
(2) In the invention, the sewage is subjected to biochemical treatment in the A/O pool, then is subjected to treatment in the membrane bioreactor, and finally is subjected to treatment in the R/O reverse osmosis membrane, so that the effluent quality is stable and higher, and even can reach the drinking water standard.
(3) The sludge generated in the invention is subjected to concentration, pretreatment, digestion and dehydration, and finally is subjected to incineration treatment by virtue of the methane generated by anaerobic treatment, so that the concept of resource utilization maximization treatment is fully exerted, and the sludge discharge basically realizes harmless treatment, thereby meeting the requirements of environmental protection and sustainable development.
(4) According to the difference of the solid content, sand content and slag content of the sludge generated by the adsorption-degradation tank and the A/O tank, different treatment technical routes are adopted, and compared with the traditional method, the treatment process has better pertinence and treatment effect.
Drawings
FIG. 1 is a block diagram of an embodiment;
FIG. 2 is a plan view of the multi-stage A/O cell in the embodiment;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 2;
FIG. 5 is a plan view of an aerated grit chamber in the example;
FIG. 6 is a sectional view of an aerated grit chamber in the example;
FIG. 7 is a schematic structural diagram of an MBR membrane tank in the embodiment;
FIG. 8 is a schematic view showing the structure of an adsorption-degradation tank in the example;
FIG. 9 is a flow chart of a conventional sewage treatment process in the prior art;
in the figure: 1. lifting the pump station; 2. coarse grating; 3. fine grids; 4. an aeration grit chamber; 4-1, an aeration pipe; 4-2, a sand collecting hopper; 4-3, a triangular fixing frame; 4-4, a rotating shaft; 5. an adsorption-degradation tank; 5-1, an adsorption tank; 5-2, a degradation tank; 5-3, a sloping plate sedimentation tank; 6a, a multi-stage A/O pool; 6a-1, a flow guide clapboard; 6a-2, an aeration device; 6b, single group A/O pool; 7. an MBR membrane tank; 7-1, MBR membrane frame; 7-2, MBR membrane; 7-3, variable frequency pump; 8. an R/O reverse osmosis membrane pool; 9. a gravity concentration tank; 10. a sludge pretreatment tank; 11. An anaerobic digester; 12. a mechanical dehydration treatment workshop; 13. solid waste treatment plant.
Detailed Description
The embodiment is an urban sewage comprehensive treatment and efficient recycling system, which mainly comprises a domestic sewage treatment system, an industrial wastewater treatment system, a sludge treatment system, a solid waste treatment plant and the like.
The domestic sewage treatment system in the embodiment comprises a lifting pump station, a coarse grid, a fine grid, an aeration grit chamber, an adsorption-degradation tank, a multi-stage A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank which are sequentially arranged along the flow direction of sewage.
Domestic sewage in profound flows into a drinking water source place after passing through a lifting pump station, a coarse grid, a fine grid, an aeration grit chamber, an adsorption-degradation tank, a multi-stage A/O tank, an MBR membrane tank, an R/O reverse osmosis membrane tank and ultraviolet light disinfection treatment in sequence.
The industrial wastewater treatment system in the embodiment comprises a lifting pump station, a coarse grid, a fine grid, an adsorption-degradation tank, a single-group A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank which are sequentially arranged along the wastewater flowing direction.
The industrial wastewater in profound is treated by a lifting pump station, a coarse grid, a fine grid, an adsorption-degradation pool, a single group of A/O pool, an MBR membrane pool and an R/O reverse osmosis membrane pool in sequence and finally used for preparing ultrapure water in industry and the like.
The sludge treatment system collects and treats sludge in the embodiment and is provided with a gravity concentration tank, a sludge pretreatment tank, an anaerobic digestion tank and a mechanical dehydration treatment workshop.
In the embodiment, the sludge collected by the sludge treatment system is from two paths, one path of sludge is from precipitated sludge in an adsorption-degradation tank in a domestic sewage treatment system and an industrial wastewater treatment system, and the path of sludge passes through a gravity concentration tank, an anaerobic digestion tank and a mechanical dehydration treatment workshop in sequence and is treated by the mechanical dehydration treatment workshop to generate dehydrated sludge cakes; the other path of sludge comes from the precipitated sludge of a multi-stage A/O pool of a domestic sewage treatment system and a single-group A/O pool of an industrial wastewater treatment system, and the path of sludge sequentially passes through a gravity concentration pool, a sludge pretreatment pool, an anaerobic digestion pool and a mechanical dehydration treatment workshop and is treated by the mechanical dehydration treatment workshop to generate dehydrated sludge cakes.
In this embodiment, the solid waste treatment plant mainly includes an incinerator, biogas generated by an anaerobic digester in the sludge treatment system and sludge cake generated by the mechanical dehydration treatment plant are sent to the solid waste treatment plant for treatment, and the incinerator in the solid waste treatment plant incinerates dehydrated sludge cake generated by the mechanical dehydration treatment plant by using biogas generated by the anaerobic digester in the sludge treatment system.
In this embodiment, the effluent of the MBR membrane tank is divided into two paths: one path is connected to the R/O reverse osmosis membrane pool, the other path is directly connected to the solid waste treatment plant through a water delivery pipe for supplying the production water of the solid waste treatment plant, and a tail water discharge port is arranged in the middle of the water delivery pipe and is controlled to discharge to a nearby river or sea through a valve.
The aeration grit chamber in this embodiment is a rectangle channel, installs aeration equipment at the bottom of the pool, and aeration equipment includes axis of rotation and the radial aeration pipe that is fixed in the axis of rotation, and the aeration pipe is fixed through tripod type mount, and aeration pipe gas outlet arrangement mode is according to tripod type base from the outside equidistance radiation arrangement in axle center, can start the pivot when needing to improve the aeration degree of consistency, and the gas outlet outside is established the one deck filter screen, and the sand collection fill is established to aeration grit chamber lower part.
The adsorption-degradation tank in the embodiment sequentially comprises an adsorption tank, a degradation tank and an inclined plate sedimentation tank along the water flow direction, wherein the adsorption tank is provided with hydraulic retention time of 30min, the sludge age is 0.3-0.5 d, and the concentration of dissolved oxygen is controlled to be 0.2-0.7 mg/L; the degradation tank is set with hydraulic retention time of 2-3 h, the sludge age is 15-20 d, the dissolved oxygen concentration is controlled to be 1-2 mg/L, and a dissolved oxygen meter is arranged in the tank and is matched with an aeration device to control the dissolved oxygen concentration; in the embodiment, the supernatant in the inclined plate sedimentation tank flows to the next treatment unit, the sludge at the bottom can flow back to the adsorption tank and the degradation tank, and BOD is arranged in the inclined plate sedimentation tank5The concentration monitoring device and the sludge reflux ratio can be based on BOD5And adjusting the concentration monitoring value.
TABLE 1 BOD5Concentration and sludgeRelationship of reflux ratio
| BOD5Concentration (mg/L) | 10～20 | 20-30 | 30-40 | ≥50 |
| Sludge reflux ratio | 50％ | 50％-100％ | 100％-150％ | 200％ |
In the embodiment, the A/O pool is divided into an anoxic zone and an aerobic zone, the whole A/O pool is in a cuboid shape, the pool bodies of the anoxic zone and the aerobic zone are the same, a plurality of flow guide partition plates are arranged in each anoxic zone and are arranged in an equidistant staggered manner, and communicated channels which are staggered up and down are respectively formed; in the embodiment, the bottom of the aerobic zone is provided with an aeration device, and 50-100% of sludge in the aerobic zone flows back to the anoxic zone through a sludge pump.
In the embodiment, the MBR membrane tank is a filter tank formed by connecting an MBR membrane frame and an MBR membrane, the membrane of the MBR membrane tank is a flat membrane, and the membrane flux is 0.2-0.3 m3/m2D, arranging a plurality of membrane groups which are all provided with lifting devices, lengthening a filtering path in a series connection mode, arranging one of the membrane groups as a standby membrane group, configuring a variable frequency pump, adjusting the flow speed according to the output sewage quantity, and controlling the processing load of the MBR membrane pool.
The R/O reverse osmosis membrane pool in the embodiment comprises an R/O reverse osmosis membrane device shell, a water inlet high-speed heater and a water inlet side high-pressure pump, wherein the water inlet side for conveying incoming water is subjected to reverse osmosis under the influence of pressure difference through the high-pressure pump, the water temperature of the heater is ensured, the cleanness of the R/O reverse osmosis membrane is improved, and the water passing amount is further improved.
In the embodiment, the sludge pretreatment tank adopts high-temperature pyrohydrolysis treatment, adopts high temperature of 155-170 ℃, pressure of 0.6-1.6 MPa and reaction time of 15-90 min, and carries out pyrohydrolysis and flash evaporation treatment on the sludge.
In the embodiment, the anaerobic digestion tank adopts mechanical stirring, and the generated biogas is collected and conveyed to a solid waste treatment plant for burning dehydrated sludge cakes.
In the embodiment, the daily drainage arrangement of the solid waste treatment plant is provided with the oil separation tank, and the scum oil dirt in the oil separation tank can be input into the anaerobic digestion tank for disposal.
To demonstrate the effect of this example, the following process flow of the conventional wastewater treatment in the prior art is compared with the wastewater treatment effect of the process flow of this example.
TABLE 2 monthly mean value of various water quality indexes
TABLE 3 monthly mean value of effluent quality index of conventional sewage treatment process
Table 4 shows the monthly mean value of the effluent quality index of the treatment process of the embodiment
As can be seen from the comparison of tables 3 and 4, the sewage treatment effect of the embodiment is obviously superior to that of the conventional sewage treatment process flow in the prior art.
The above description is only for the specific embodiments of the present patent, but the structural features of the present patent are not limited thereto, and any changes or modifications within the patent field by those skilled in the art are covered by the protection scope of the present patent.
Claims (13)
1. The utility model provides a municipal sewage comprehensive treatment and high-efficient system of recycling which characterized in that includes:
the domestic sewage treatment system is provided with a lifting pump station, a coarse grid, a fine grid, an aeration grit chamber, an adsorption-degradation tank, a multi-stage A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank which are sequentially arranged along the flow direction of sewage; domestic sewage sequentially passes through a lifting pump station, a coarse grid, a fine grid, an aeration grit chamber, an adsorption-degradation tank, a multi-stage A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank of the domestic sewage treatment system and then flows into a drinking water source area after being subjected to ultraviolet light disinfection treatment;
the industrial wastewater treatment system is provided with a lifting pump station, a coarse grid, a fine grid, an adsorption-degradation tank, a single-group A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank which are sequentially arranged along the wastewater flowing direction; the industrial wastewater is treated by a lifting pump station, a coarse grid, a fine grid, an adsorption-degradation tank, a single-group A/O tank, an MBR membrane tank and an R/O reverse osmosis membrane tank of the industrial wastewater treatment system in sequence and then is used as industrial water.
2. The municipal sewage comprehensive treatment and efficient recycling system according to claim 1, further comprising:
and the sludge treatment system is used for collecting and treating the precipitated sludge in the adsorption-degradation tank and the A/O tank in the domestic sewage treatment system and the industrial wastewater treatment system.
3. The municipal sewage comprehensive treatment and efficient recycling system according to claim 2, wherein: the sludge treatment system is provided with a gravity concentration tank, a sludge pretreatment tank, an anaerobic digestion tank and a mechanical dehydration treatment workshop;
the precipitated sludge from the adsorption-degradation tank sequentially passes through a gravity concentration tank, an anaerobic digestion tank and a mechanical dehydration treatment workshop to generate dehydrated sludge cakes;
and the settled sludge from the A/O tank sequentially passes through a gravity concentration tank, a sludge pretreatment tank, an anaerobic digestion tank and a mechanical dehydration treatment workshop to generate dehydrated sludge cakes.
4. The municipal sewage comprehensive treatment and efficient recycling system according to claim 3, further comprising:
a solid waste treatment plant is provided with an incinerator for incinerating dehydrated sludge cakes generated in a mechanical dehydration treatment workshop by utilizing methane generated by an anaerobic digestion tank in a sludge treatment system.
5. The municipal sewage comprehensive treatment and efficient recycling system according to claim 4, wherein: the water outlet of the MBR membrane tank is divided into two paths, one path is connected to the R/O reverse osmosis membrane tank, the other path is connected to a solid waste treatment plant through a water delivery pipe to supply production water for the solid waste treatment plant, and a tail water discharge port is arranged on the water delivery pipe and can control tail water to be discharged to a nearby river or sea through a valve.
6. The municipal sewage comprehensive treatment and efficient recycling system according to claim 1, wherein: the aeration grit chamber be a rectangle channel, set up the aeration pipe in the channel, the aeration pipe is installed in driving this aeration pipe pivoted axis of rotation.
7. The municipal sewage comprehensive treatment and efficient recycling system according to claim 1, wherein: the adsorption-degradation tank comprises an adsorption tank, a degradation tank and an inclined plate sedimentation tank which are arranged in sequence along the water flow direction, wherein
The absorption tank is provided with hydraulic retention time of 30min, sludge age of 0.3-0.5 d and dissolved oxygen concentration of 0.2-0.7 mg/L;
the degradation pool is set for hydraulic retention time of 2-3 h, the sludge age is 15-20 d, and the concentration of dissolved oxygen is controlled to be 1-2 mg/L;
the supernatant of the inclined plate sedimentation tank flows to the next treatment unit, and the sludge at the bottom flows back to the adsorption tank and the degradation tank; the inclined plate sedimentation tank is internally provided with BOD5The concentration monitoring device and the sludge reflux ratio of the inclined plate sedimentation tank are based on BOD5And adjusting the concentration monitoring value.
8. The municipal sewage comprehensive treatment and efficient recycling system according to claim 1, wherein: the A/O pond have anoxic zone and aerobic zone, wherein every anoxic zone is inside to set up a plurality of diversion baffles, equidistance staggered arrangement: an aeration device is arranged at the bottom of the aerobic zone, and 50-100% of sludge in the aerobic zone flows back to the anoxic zone through a sludge pump.
9. The municipal sewage comprehensive treatment and efficient recycling system according to claim 1, wherein: the MBR membrane tank is a filter tank formed by connecting an MBR membrane frame and an MBR membrane, the membrane of the MBR membrane tank is a flat membrane, and the membrane flux is 0.2-0.3 m3/m2D, arranging a plurality of membrane groups which are all provided with lifting devices, lengthening a filtering path in a serial connection mode, wherein one membrane group is arranged as a standby membrane group; the MBR membrane tank is provided with a variable frequency pump, the flow rate is adjusted according to the output sewage quantity, and the treatment load of the MBR membrane tank is controlled.
10. The municipal sewage comprehensive treatment and efficient recycling system according to claim 1, wherein: the R/O reverse osmosis membrane pool comprises an R/O reverse osmosis membrane device shell, a water inlet high-speed heater and a water inlet side high-pressure pump, wherein the water temperature is ensured by the heater while the water inlet pipe conveys the incoming water and the reverse osmosis is carried out under the influence of pressure difference by the aid of the high-pressure pump on the water inlet side, so that the cleanness of the R/O reverse osmosis membrane is improved, and the water passing amount is increased.
11. The municipal sewage comprehensive treatment and efficient recycling system according to claim 3, wherein: the sludge pretreatment tank is subjected to high-temperature pyrohydrolysis treatment, wherein the high temperature is 155-170 ℃, the pressure is 0.6-1.6 MPa, and the reaction time is 15-90 min.
12. The municipal sewage comprehensive treatment and efficient recycling system according to claim 3, wherein: the anaerobic digestion tank adopts mechanical stirring.
13. The municipal sewage comprehensive treatment and efficient recycling system according to claim 4, wherein: the daily drainage of the solid waste treatment plant is provided with an oil separation tank, and scum oil stains in the oil separation tank can be input into the anaerobic digestion tank for disposal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111152972.9A CN113998834A (en) | 2021-09-29 | 2021-09-29 | Urban sewage comprehensive treatment and efficient recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111152972.9A CN113998834A (en) | 2021-09-29 | 2021-09-29 | Urban sewage comprehensive treatment and efficient recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113998834A true CN113998834A (en) | 2022-02-01 |
Family
ID=79922048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111152972.9A Pending CN113998834A (en) | 2021-09-29 | 2021-09-29 | Urban sewage comprehensive treatment and efficient recycling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113998834A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200340A (en) * | 2006-12-15 | 2008-06-18 | 光大环保工程技术(深圳)有限公司 | Sewage water treatment system |
| CN101372379A (en) * | 2008-05-28 | 2009-02-25 | 北京碧水源科技股份有限公司 | Double membrane processing method for organic wastewater |
| US20110089105A1 (en) * | 2008-03-28 | 2011-04-21 | Siemens Water Technologies Corp. | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods |
| CN104230129A (en) * | 2014-09-01 | 2014-12-24 | 陈小洁 | Activated sludge treatment method |
| CN205099548U (en) * | 2015-10-20 | 2016-03-23 | 光大水务（深圳）有限公司 | A section + A2O sewage treatment system |
| CN107253797A (en) * | 2017-05-07 | 2017-10-17 | 陕西碧诺环保科技有限公司 | A kind of samll cities and towns' rural sewage treatment process |
| CN109626727A (en) * | 2018-12-25 | 2019-04-16 | 苏州依斯倍环保装备科技有限公司 | A kind of Zero discharge treatment method and system machining waste water |
| CN110316905A (en) * | 2019-06-18 | 2019-10-11 | 中国电建集团河南工程有限公司 | Processing system for landfill leachate zero-emission in garbage incineration power plant |
-
2021
- 2021-09-29 CN CN202111152972.9A patent/CN113998834A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200340A (en) * | 2006-12-15 | 2008-06-18 | 光大环保工程技术(深圳)有限公司 | Sewage water treatment system |
| US20110089105A1 (en) * | 2008-03-28 | 2011-04-21 | Siemens Water Technologies Corp. | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods |
| CN101372379A (en) * | 2008-05-28 | 2009-02-25 | 北京碧水源科技股份有限公司 | Double membrane processing method for organic wastewater |
| CN104230129A (en) * | 2014-09-01 | 2014-12-24 | 陈小洁 | Activated sludge treatment method |
| CN205099548U (en) * | 2015-10-20 | 2016-03-23 | 光大水务（深圳）有限公司 | A section + A2O sewage treatment system |
| CN107253797A (en) * | 2017-05-07 | 2017-10-17 | 陕西碧诺环保科技有限公司 | A kind of samll cities and towns' rural sewage treatment process |
| CN109626727A (en) * | 2018-12-25 | 2019-04-16 | 苏州依斯倍环保装备科技有限公司 | A kind of Zero discharge treatment method and system machining waste water |
| CN110316905A (en) * | 2019-06-18 | 2019-10-11 | 中国电建集团河南工程有限公司 | Processing system for landfill leachate zero-emission in garbage incineration power plant |
Non-Patent Citations (1)
| Title |
|---|
| 韩洪军主编: "《污水处理构筑物设计与计算》", 哈尔滨工业大学出版社, pages: 249 - 250 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107381961B (en) | Distributed sewage treatment system and treatment method using same | |
| CN101234836B (en) | Garbage percolate treatment technique | |
| CN209740813U (en) | Anaerobic-aerobic internal circulation sludge in-situ reduction system based on A2/O process | |
| CN110668633A (en) | Kitchen waste sorting wastewater treatment system and process | |
| CN209619125U (en) | Magnetic-coagulation clarification and denitrification filter pool combined type sewage treatment equipment | |
| CN210736456U (en) | Treatment device for zero discharge of garbage leachate in garbage incineration power station | |
| CN102351366A (en) | Device and method for treating pharmaceutical waste water through synchronous biological denitrification and devulcanization and autotrophic biological denitrification | |
| CN111039521A (en) | Sewage treatment regeneration and reuse system and method for sewage treatment by using same | |
| CN203238141U (en) | Sewage biological treatment membrane filtration system | |
| CN109775936B (en) | Low-energy-consumption domestic sewage treatment system | |
| CN111559837A (en) | Landfill leachate biochemical treatment system and process | |
| CN215627425U (en) | New rural domestic sewage treatment system based on MBR membrane reactor | |
| CN212610162U (en) | Resource recycling treatment system for leachate of waste incineration plant | |
| CN113998834A (en) | Urban sewage comprehensive treatment and efficient recycling system | |
| CN104743751A (en) | A/O (anaerobic/aerobiotic) sewage treatment process device and technique thereof | |
| CN212610161U (en) | Full-flow treatment system for leachate of waste incineration plant | |
| CN211056898U (en) | MFBR sewage treatment plant | |
| CN115028267A (en) | Waste water recycling device | |
| CN211056798U (en) | Concentric sleeve type MFBR rural sewage treatment device | |
| CN211170296U (en) | Novel pretreatment membrane bioreactor | |
| CN114105394A (en) | High-efficiency percolate total nitrogen removal treatment method | |
| CN109292980A (en) | A kind of adjustable multistage AO-MBBR process spent water processing unit of series and method | |
| CN205241469U (en) | Papermaking waste water, ecological resource system of mud | |
| CN204529609U (en) | Cleaning pulping wastewater treatment equipment | |
| CN211570413U (en) | Sewage treatment regeneration recycling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |