CN109368941A - A kind of urban wastewater treatment device and its application - Google Patents
A kind of urban wastewater treatment device and its application Download PDFInfo
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- CN109368941A CN109368941A CN201811497970.1A CN201811497970A CN109368941A CN 109368941 A CN109368941 A CN 109368941A CN 201811497970 A CN201811497970 A CN 201811497970A CN 109368941 A CN109368941 A CN 109368941A
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- tank
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- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
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- 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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a kind of urban wastewater treatment device and its applications, belong to technical field of sewage.The device includes sequentially connected grid, setting pot, anaerobic pond, anoxic pond, aerobic tank, secondary settling tank, filtering ponds and sterilization pool, and the aerobic tank is connected with the anoxic pond, and the mud discharging mouth of the secondary settling tank is connect with the anaerobic pond；The mud discharging mouth of the secondary settling tank is connect with sludge concentration tank, and the sludge concentration tank is connect with sludge dewatering equipment and the setting pot respectively, and the sludge dewatering equipment is connect with the setting pot.The process town sewage that the present invention uses materialization+biochemistry+materialization to combine, has the advantages that rational technology, treatment effect are stable, and water outlet can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) level-one A standard.
Description
Technical field
The invention belongs to technical field of sewage, more specifically to a kind of urban wastewater treatment device and its answer
With.
Background technique
With the development of economy with the growth of population, ur- banization speed constantly accelerates, and consequent is town sewage
Constantly discharge and its processing problem.To solve to alleviate the pressure of environment, the processing problem of town sewage is must in urbanization process
One of need face and solve the problems, such as.
Town sewage includes town dweller's sanitary sewage, organ, school, hospital, commerce services mechanism and various public is set
Draining is applied, and industrial wastewater and initial rainwater for allowing to be discharged into town sewage collection system etc., has the following characteristics that (1) people
Mouth is few, and water supply standard is lower, sewage treatment small scale；(2) industrial structure region particular differences, influenced and water consumption by rainy season
Hourly variation factor is larger, therefore sewage water, change of water quality are big；(3) level of economic development is relatively low, and ability to shoulder economically is weak, can
Selective applicable technology is few；(4) cause expense for construction and operating cost excessively high since treatment scale is small；(5) maintenance pipe
Manage technical staff and operational management experience there is a serious shortage of.Currently, China there is no, for Sewage Treatment Project, (treatment scale is small
In 20,000 ton per days, focus mostly in 2000~5000 ton per days) adaptable treatment process.
Publication date is that the Chinese patent 201210302700.7 on November 14th, 2012 discloses a kind of urban wastewater treatment
System and method, the system include being sequentially connected logical grid sewage-treatment plant, setting pot, anoxic pond, MBR aerobic tank, interior
The adsorption filter and sterilization pool of compound adsorbent of the portion filled with nano hydrated ferric oxide, wherein the aerobic bottom of pond portion of MBR is equipped with
For the sludge outlet of sludge to be discharged, the corresponding processing method of the processing system includes being suspended with the removal of grid sewage-treatment plant
Object is handled, with setting pot precipitating inorganic particle, denitrification denitrogenation processing, with MBR membrane module deep purifying with nano hydrated oxidation
Iron adsorbent carries out dephosphorization processing and carries out disinfection processing to the processing water Jing Guo above-mentioned steps, wherein MBR membrane module depth
The partial sludge of purified treatment is back in denitrification denitrogenation processing.Greatest problem existing for the technology is to need to contain using technology
Higher inorganic agent is measured, application and maintenance there are higher technical requirements, be not suitable for the processing of town sewage.
Summary of the invention
Goal of the invention: in view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a kind of town sewages
Processing unit, another object of the present invention is to provide application of the device in processing town sewage.
Technical solution: to solve the above-mentioned problems, the technical solution adopted in the present invention is as follows:
A kind of urban wastewater treatment device, including sequentially connected grid, setting pot, biological processing unit, secondary settling tank, mistake
Filter tank and sterilization pool, the biological processing unit are used to remove most organic pollutants using biochemical treatment, and described two is heavy
The mud discharging mouth in pond is connect with sludge concentration tank, and the sludge concentration tank connects with sludge dewatering equipment and the setting pot respectively
It connects, the sludge dewatering equipment is connect with the setting pot.
The main body biological processing unit includes sequentially connected anaerobic pond, anoxic pond and aerobic tank, the aerobic tank with
The anoxic pond is connected, and the mud discharging mouth of the secondary settling tank is connected with the anaerobic pond.
The filtering ponds are V-type filter tank, and the V-type filter tank uses micro- resistance water distribution system, and filtrate is that single layer quartz sand is equal
Matter filtrate, 1.2 meters of quartz sand thickness, the effective grain size of quartz sand is 0.90~1.20mm.
The grid includes coarse rack and fine fack, and the grizzly bar gap of the coarse rack is 30mm, the grid of the fine fack
Interspace is 8mm.
The secondary settling tank is radical sedimentation basin, and scraping and sucking machine is arranged in pond.
Anaerobic pond, anoxic pond, the volumetric ratio of aerobic tank are 1:1:3.
Application of the above-mentioned apparatus when handling town sewage, including following processing step:
Step 1, aerated grit chamber is passed through after town sewage being removed floating material and suspended matter by grid；
Step 2, sewage removes most inorganic grit by aerated grit chamber；
Step 3, setting pot water outlet passes sequentially through anaerobic pond, anoxic pond and aerobic tank to remove most organic contaminations
Object, aerobic tank part effluent recycling to anoxic pond, remaining water outlet enter secondary settling tank；
Step 4, sewage further removes oil removal in secondary settling tank, and the partial sludge of secondary settling tank is back to anaerobic pond；
Step 5, secondary clarifier effluent is discharged after passing sequentially through filtering ponds and sterilization pool；
Step 6, the excess sludge of secondary settling tank is discharged into sludge concentration tank and carries out gravity concentration, and gained supernatant is back to sand setting
Pond；Sludge after concentration enters sludge dewatering equipment and is dehydrated, and gained percolate is back to setting pot, is dehydrated outside gained mud cake
Fortune.
The ratio of aerobic tank effluent recycling is one third.
The return sludge ratio of the secondary settling tank is 1:3.
Hydraulic detention time of the sewage in anaerobic pond is 1.5h, and the hydraulic detention time in anoxic pond is 1.5h,
Hydraulic detention time in aerobic tank is 4.5h.
The utility model has the advantages that compared with the prior art, the present invention is mutually tied using materialization+biochemistry (anaerobe-oxygen deficient+aerobic)+materialization
The process of conjunction, handles town sewage, and treated, and sewage meets " urban wastewater treatment firm pollutant emission mark
It is quasi- " requirement of (GB18918-2002) level-one A standard, processing and maintenance process are easy, and high treating effect, device is reliable for operation,
Economical rationality.Urban wastewater treatment device and application of the invention has not only widened the Processing tecchnics of this kind of sewage, but also right
The improvement of other trade effluents also has certain reference value.
Detailed description of the invention
Fig. 1 is process for town sewage treatment flow diagram of the invention.
Specific embodiment
The present invention is further described below combined with specific embodiments below.
Embodiment
A kind of urban wastewater treatment device, including grid, setting pot, anaerobic pond, anoxic pond, aerobic tank, secondary settling tank, V-type
Filter tank, sterilization pool, sludge concentration tank, sludge dewatering equipment；As shown in Figure 1, town sewage passes sequentially through grid, setting pot, anaerobism
Pond, anoxic pond, aerobic tank, secondary settling tank, V-type filter tank and sterilization pool；Aerobic tank is connected with anoxic pond；Secondary settling tank and anaerobic pond phase
Even；Secondary settling tank is also connected with sludge concentration tank；Sludge concentration tank is connected with setting pot；Sludge concentration tank also with sludge dewatering equipment phase
Even, sludge dewatering equipment is connect with setting pot.
Wherein:
Grid is twice grid, coarse rack and fine fack, and the grizzly bar gap of coarse rack is 30mm, the grizzly bar gap of fine fack
For 8mm, the scarfing cinder mode of grid is mechanical scarfing cinder；Inlet pumping station is arranged in coarse rack and fine fack.
Setting pot is aerated grit chamber, is aerated using boring aeration pipe, main purpose be in order to remove specific gravity compared with
Big inorganic particle.
Aerobic tank uses SBR activated sludge process, and anaerobic pond, anoxic pond, the volumetric ratio of aerobic tank are 1:1:3.
Secondary settling tank is radical sedimentation basin, and scraping and sucking machine is arranged in pond；
V-type filter tank use micro- resistance water distribution system, filtrate be single layer quartz sand homogeneous filtering material, 1.2 meters of quartz sand thickness, stone
The effective grain size of sand is 0.90~1.20mm, and the backwashing manner combined with surface sweep washing is backwashed using three step of air water.
Chlorine dioxide generator is equipped in sterilization pool, chlorine dioxide generator is placed in chlorination house.
Sludge dewatering equipment is belt filter press.
Certain town sewage, water 8000m are handled using above-mentioned apparatus3/ d, including following steps as shown in Figure 1:
Step 1, aerated grit chamber is passed through after town sewage being removed floating material and suspended matter by grid；
Step 2, sewage removes most inorganic grit by aerated grit chamber；
Step 3, setting pot water outlet passes sequentially through anaerobic pond, anoxic pond and aerobic tank to remove most organic pollutants
(including ammonia nitrogen, total phosphorus etc.), 1/3 effluent recycling of aerobic tank to anoxic pond (i.e. nitrification liquid reflux) is to remove ammonia nitrogen, remaining water outlet
Into Radial Flow Secondary Sedimentation Tank, hydraulic detention time of the sewage in anaerobic pond is 1.5h, and the residence time in anoxic pond is
1.5h, the residence time in aerobic tank are 4.5h；
Step 4, sewage further removes oil removal in Radial Flow Secondary Sedimentation Tank, and the partial sludge of secondary settling tank is back to anaerobism
Pond is to guarantee the amount of useful microorganism, return sludge ratio 1:3；
It step 5, is the treatment effect for further increasing sewage, secondary clarifier effluent enters V-type filter tank, passes through the mistake of quartz sand
The further purification sewage of filter, sewage carries out disinfection pond later, is discharged after being carried out disinfection using chlorine dioxide；
Step 6, the excess sludge of secondary settling tank is discharged into sludge concentration tank and carries out gravity concentration, and gained supernatant is back to sand setting
Pond；Sludge after concentration enters sludge dewatering equipment and is dehydrated, and gained percolate is back to setting pot, is dehydrated outside gained mud cake
Fortune.
The correlation water index of sewage is shown in Table 1 after treatment, illustrates final outflow water water quality better than " urban wastewater treatment firm
Pollutant emission standard " (GB18918-2002) level-one A standard requirement.
The water quality indicator of the sewage before and after the processing of table 1
Claims (10)
1. a kind of urban wastewater treatment device, which is characterized in that including sequentially connected grid, setting pot, biological processing unit,
Secondary settling tank, filtering ponds and sterilization pool, the biological processing unit are used to remove most organic pollutants using biochemical treatment,
The mud discharging mouth of the secondary settling tank is connect with sludge concentration tank, the sludge concentration tank respectively with sludge dewatering equipment and described heavy
The connection of sand pond, the sludge dewatering equipment are connect with the setting pot.
2. urban wastewater treatment device according to claim 1, which is characterized in that the main body biological processing unit includes
Sequentially connected anaerobic pond, anoxic pond and aerobic tank, the aerobic tank are connected with the anoxic pond, the sludge row of the secondary settling tank
Mouth is put to be connected with the anaerobic pond.
3. urban wastewater treatment device according to claim 1, which is characterized in that the filtering ponds are V-type filter tank, described
V-type filter tank uses micro- resistance water distribution system, and filtrate is single layer quartz sand homogeneous filtering material, and 1.2 meters of quartz sand thickness, quartz sand has
Effect partial size is 0.90~1.20mm.
4. urban wastewater treatment device according to claim 1, which is characterized in that the grid includes coarse rack and thin lattice
Grid, the grizzly bar gap of the coarse rack are 30mm, and the grizzly bar gap of the fine fack is 8mm.
5. urban wastewater treatment device according to claim 1, which is characterized in that the secondary settling tank is radial-flow type sedimentation
Scraping and sucking machine is arranged in pond in pond.
6. urban wastewater treatment device according to claim 1, which is characterized in that anaerobic pond, anoxic pond, the appearance of aerobic tank
Product is than being 1:1:3.
7. application of the device according to any one of claims 1 to 6 when handling town sewage, which is characterized in that including with
Lower processing step:
Step 1, aerated grit chamber is passed through after town sewage being removed floating material and suspended matter by grid；
Step 2, sewage removes most inorganic grit by aerated grit chamber；
Step 3, setting pot water outlet passes sequentially through anaerobic pond, anoxic pond and aerobic tank to remove most organic pollutants, good
Oxygen pond part effluent recycling to anoxic pond, remaining water outlet enters secondary settling tank；
Step 4, sewage further removes oil removal in secondary settling tank, and the partial sludge of secondary settling tank is back to anaerobic pond；
Step 5, secondary clarifier effluent is discharged after passing sequentially through filtering ponds and sterilization pool；
Step 6, the excess sludge of secondary settling tank is discharged into sludge concentration tank and carries out gravity concentration, and gained supernatant is back to setting pot；
Sludge after concentration enters sludge dewatering equipment and is dehydrated, and gained percolate is back to setting pot, dehydration gained mud cake outward transport.
8. application according to claim 7, which is characterized in that the ratio of aerobic tank effluent recycling is one third.
9. application according to claim 7, which is characterized in that the return sludge ratio of the secondary settling tank is 1:3.
10. application according to claim 7, which is characterized in that hydraulic detention time of the sewage in anaerobic pond is 1.5h,
Hydraulic detention time in anoxic pond is 1.5h, and the hydraulic detention time in aerobic tank is 4.5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811497970.1A CN109368941A (en) | 2018-12-07 | 2018-12-07 | A kind of urban wastewater treatment device and its application |
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| CN201811497970.1A CN109368941A (en) | 2018-12-07 | 2018-12-07 | A kind of urban wastewater treatment device and its application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072241A (en) * | 2019-12-31 | 2021-07-06 | 江苏开放大学（江苏城市职业学院） | Domestic sewage treatment device and treatment method thereof |
| CN115286176A (en) * | 2022-07-22 | 2022-11-04 | 安徽润岳科技有限责任公司 | Wastewater treatment process and device for wastewater station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295383A (en) * | 2011-06-02 | 2011-12-28 | 山东建筑大学 | Advanced municipal wastewater treatment system and technology using the same for advanced treatment |
| CN205442981U (en) * | 2016-03-07 | 2016-08-10 | 北京创通建设集团有限公司 | Wastewater treatment system |
| CN206255954U (en) * | 2016-10-19 | 2017-06-16 | 广东绿虎环境科技有限公司 | Heavy duty detergent domestic sewage processing system |
| CN209210593U (en) * | 2018-12-07 | 2019-08-06 | 江苏开放大学（江苏城市职业学院） | A kind of town sewage treatment system |
-
2018
- 2018-12-07 CN CN201811497970.1A patent/CN109368941A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295383A (en) * | 2011-06-02 | 2011-12-28 | 山东建筑大学 | Advanced municipal wastewater treatment system and technology using the same for advanced treatment |
| CN205442981U (en) * | 2016-03-07 | 2016-08-10 | 北京创通建设集团有限公司 | Wastewater treatment system |
| CN206255954U (en) * | 2016-10-19 | 2017-06-16 | 广东绿虎环境科技有限公司 | Heavy duty detergent domestic sewage processing system |
| CN209210593U (en) * | 2018-12-07 | 2019-08-06 | 江苏开放大学（江苏城市职业学院） | A kind of town sewage treatment system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072241A (en) * | 2019-12-31 | 2021-07-06 | 江苏开放大学（江苏城市职业学院） | Domestic sewage treatment device and treatment method thereof |
| CN115286176A (en) * | 2022-07-22 | 2022-11-04 | 安徽润岳科技有限责任公司 | Wastewater treatment process and device for wastewater station |
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