CN107253797A - A kind of samll cities and towns' rural sewage treatment process - Google Patents
A kind of samll cities and towns' rural sewage treatment process Download PDFInfo
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- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 239000011574 phosphorus Substances 0.000 claims abstract description 7
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- 238000002203 pretreatment Methods 0.000 description 2
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 2
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Classifications
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F3/02—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
- C02F3/28—Anaerobic digestion processes
-
- 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
- C02F3/308—Biological phosphorus removal
Abstract
The invention discloses a kind of samll cities and towns' rural sewage treatment process, including mechanical grille+rotational flow grit chamber+aerating regulation pond+compound A/O techniques+MBR+ second ponds+sterilization+reuse step.Septic tank effluent passes through grid, rotational flow grit chamber, aerating regulation pond, lifted into compound A/O reaction tanks and MBR reaction tanks, with the complicated organic matter in anaerobic bacteria degraded sewage, improve Biodegradability of Wastewater, organic pollution is set to be first converted into ammonia nitrogen with the effect of biomembrane, by aerobic nitrification and anoxic denitrification process not only organics removal but also ammonia nitrogen is eliminated, while reaching dephosphorization purpose with phosphorus of the polyP bacteria in aerobic stage absorbs sewage；Sewage after processing is drawn to second pond and carries out separation of solid and liquid, the sterilized rear reuse of water outlet, and partial sludge carries to ABR reaction tanks and carries out dephosphorization, excess sludge concentration.The characteristics of technique is that biological denitrification dephosphorization efficiency is high, and investment operating cost is low, and stable and reliable operation, the strong operational administrative of capacity of resisting impact load is simple.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of samll cities and towns' rural sewage treatment process.
Background technology
In recent years, after progressively solving big and medium-sized cities and part county town sewage handling problem with country, China small city
The importance of town rural domestic sewage treatment starts to cause the extensive concern of people.Can domestic sewage in rural areas be handled well,
The villages and small towns New Technology about Wastewater Treatment of efficient, low input is found, carrying for the vast rural area living standards of the people of China will be directly connected to
Height, is also related to China's environmental aspect, the height not having before China's rural sewage treatment is brought up to especially.
It is well-known, although China's economic development is swift and violent since the reform and opening-up, but shortage of water resources problem is with warp
The development of Ji is outstanding day by day, therefore, and the sewage after processing is reclaimed, for field irrigation, Street surface cleaning, greening water etc.
Aspect, the problem of greatly alleviating China's shortage of water resources.
In simple terms, general China's rural sewage treatment has population few, and water supply standard is relatively low, sewage disposal scale compared with
It is small；Sewage water use variation coefficient is larger；The level of economic development is relatively low, and ability to shoulder economically is weak, and applicable technology is less；Safeguard pipe
The features such as managing horizontal famine water quality characteristicses.
In samll cities and towns of China rural domestic sewage treatment, at present except higher big-and-middle-sized cities of the level of economic development such as Zhejiang
City has been formulated outside special technology for treating domestic sewage in rural area guide, and other develop slower tier 2 cities especially western China
Perfect related technical specification is not yet formulated in city, and big-and-middle-sized city is still used in the rural domestic sewage treatment of Small Urban
The traditional sewage disposal technology pattern in city.Due to Small Urban and the big and medium-sized cities level of economic development, run-off system, basis money
Material, credit extending channel are very different, therefore waste water control technique, technical equipment of big and medium-sized cities etc. should not also can not possibly be removed
In the sewage treatment plant for using samll cities and towns' level, " that builds rises, and can not afford, unmanageable " otherwise occurred at present in big and medium-sized cities
Situation will in, samll cities and towns are stronger shows, or even can develop into the embarrassment of " both can not build, more can not afford "
Situation.
Therefore, for Small Urban sewage disposal actual conditions, existing advanced sewage disposal technology is integrated and mobile mutual
Connection technology, the energy-saving urban wastewater treatment new technology of developing intellectual resource and corollary equipment, on the premise of sewage qualified discharge is ensured
Construction investment, reduction operating cost purpose are saved as far as possible.
In samll cities and towns' rural domestic sewage treatment frequently with tradition be biological denitrification phosphorous removal technique.It is presently used for agriculture
There is village's sewage disposal the sewage treatment process of certain Nitrogen/Phosphorus Removal to be roughly divided into two major classes：The first kind is spatially to carry out
The continuous stream activated sludge process of segmentation；Equations of The Second Kind is the intermittent activated sludge process temporally split.
1. the continuous stream activated sludge process spatially split
The continuous stream activated sludge process spatially split refers to various processing functions if water inlet, aeration, precipitation, water outlet are different
Completed in space (different ponds).At present, more ripe technique has：Traditional A2/ O methods, oxidation ditch process and AB methods etc..
（a）Traditional A2/ O methods
Traditional A2/ O methods sewage under the effect of different microorganisms flora, makes dirt during three difference in functionality subregions are flowed through
Organic matter, nitrogen and phosphorus in water are removed.This technique is most simply simultaneous phosphorus and nitrogen removal technique in system, and total waterpower is stopped
Stay the time to be less than other similar techniques, because anaerobism, anoxic and aerobic three areas are strictly separated, be conducive to different microorganisms flora
Flourish, therefore good denitrification dephosphorization effect.Anaerobism, anoxic and aerobic alternate run can suppress der Pilz breeding simultaneously,
Overcome sludge bulking, be conducive to the separation of sewage and sludge.And only need light and slow stirring, operation in anaerobism and anoxic section in operation
Expense is low.At present, the method is at home and abroad using relatively broad.
（b）Oxidation ditch process
Oxidation ditch process is a kind of sewage treatment process form that the fifties grow up initial stage, and native oxide ditch is in clearance-type
Operating, collects water inlet, processing, sludge aerobic and digests in a ditch.Develop into dynamic overflow-type the sixties, then derive from a variety of types
Formula.Its common feature is：Mixed liquor fluidised form system endless is circulated, and dilution capacity is strong, using surface aeration, maintenance management letter
Single, sludge loading is low, and aeration time is long, impact resistance, and sludge quantity is few and stably, is used widely quickly.Oxidation ditch is simultaneous
There is the characteristic being thoroughly mixed with plug-flow, and do not need mixed-liquor return system, oxidation ditch is according to mechamical xurface aeration, and the depth of water is then
Unsuitable excessive, power efficiency of oxygen supply is relatively low, and energy consumption is higher, and floor space is larger.Up to the present Passveer is had evolved into
The diversified forms such as ascon, Orbal concentric ring type.
2. the intermittent activated sludge process temporally split
Sequencing batch active sludge, also known as intermittent activated sludge process, in recent years, oneself develops into a variety of modified forms, mainly has：
Conventional SBR method, ICEAS methods, CAST methods, Unitank methods, MSBR methods etc..
（a）Conventional SBR method
This method and the continuous-flow system split with space are different, and it does not need returned sludge, also without special
Anaerobic zone, anoxic zone, aerobic zone, but in same container, be stirred, be aerated, precipitate at times, formed anaerobism, anoxic,
Aerobic, precipitation process.This method, total measurement (volume) utilization rate is low, and generally less than 50%, therefore suitable for smaller sewage quantity occasion.
(b) Unitank methods
Unitank techniques are made up of three rectangle form pools, and three tank waterpowers are communicated, and oxygen supply equipment are equipped with each pond, in outside
Both sides rectangle form pool is provided with fixed effluent weir and excess sludge floss hole.Continuously point pond water inlet, with Nitrogen/Phosphorus Removal.Its advantage
Be be not required to backflow, it is small without second pond, characteristics of compact layout, floor space.But due to without special anaerobic zone, therefore biological phosphor-removing effect
Difference.Its total capacity utilization is 67%.
Above method has an application in municipal sewage plant, but for rural domestic sewage treatment factory of samll cities and towns, its
Design parameter should make flexible adjustment on normative foundation, to adapt to samll cities and towns' domestic sewage in rural areas water quantity and quality change greatly
The characteristics of.Meanwhile, the problem of above method is contradicted in the presence of investment, operating cost and local economy strength in various degree, especially
It is outstanding day by day with the appearance successively of the every environmental protection policy of China, and China's water resource shortage phenomenon.
The content of the invention
For above-mentioned problems of the prior art and defect, mesh of the invention is to provide a kind of investment operating cost
It is low, stable and reliable operation, the simple samll cities and towns' rural sewage treatment process of the strong operational administrative of capacity of resisting impact load.
Realizing the technical scheme that foregoing invention purpose is used is：A kind of samll cities and towns' rural sewage treatment process, specific bag
Include the following steps：
1）Grid is passed through in septic tank effluent gravity flow, to remove the suspended material that particle in sewage is larger；
2）Grid water outlet realizes girt-water separation from rotational flow grit chamber is flow to remove bulky grain inorganic particle in sewage；
3）Rotational flow grit chamber water outlet is collected after hair interceptor through pipeline from aerating regulation pond is flow to, and on the one hand sewage is entered
Homogeneous is homogenized, and on the other hand removing small part organic pollution materials by preaeration reduces the processing load of subsequent cell；
4）Water outlet boosted pump lifting in aerating regulation pond enters to be combined A/O reaction tanks（That is ABR reaction tanks and MBBR reaction tanks）With
Complicated organic matter in MBR reaction tanks, sewage of being degraded first with anaerobic bacteria, improves Biodegradability of Wastewater, then utilizes biomembrane
Effect organic pollution is first converted into ammonia nitrogen, by aerobic nitrification and anoxic denitrification process not only organics removal but also go
Except ammonia nitrogen, while reaching dephosphorization purpose using phosphorus of the polyP bacteria in aerobic stage absorbs sewage；
5）Sewage after biochemical treatment is pumped to second pond through suction pump and carries out separation of solid and liquid, and second pond has solid-liquid separation effect
The features such as good, reduced investment, impact load and temperature change are adaptable, construction is simple；
6）Treat sludge part sludge in reuse, second pond through stripper plant vapour into reuse pool after secondary clarifier effluent is sterilized
Carry to ABR reaction tanks and carry out dephosphorization processing, excess sludge is stripped to sludge concentration tank and carries out concentration, the sludge warp after concentration
Mud cake is delivered to the unit with sludge treatment qualification and handled after folded spiral shell dewaterer dehydration sterilization.
Compound A/O+MBR optimum organizations technique proposed by the present invention is the life of new A BR anaerobic reaction+MBBR reaction+MBR films
Thing handles the technique, and its advantage mainly has：1. ABR anaerobic reation pools are that vertical deflector is set in pond, and reactor is separated into
Several reative cells of series connection, each reative cell is a relatively independent upflow sludge blanket（UASB）System, dirt therein
Mud can exist with granulate form or in cotton-shaped form.Current by deflector guide above and below baffling advance, one by one pass through reaction
Indoor sludge blanket, the organic pollution in water inlet fully contacts with microorganism and is able to degraded and removes, using ABR anaerobic reactions
Advantage be that each independent reative cell of reactor tames the microbial being adapted with environmental condition at this, effluent quality compared with
It is good, it is stable；Carrier is not filled out in Sludge Bed, three phase separator is not required to, it is to avoid blocks and reduces investment outlay.2. the present invention is used
MBBR reaction technologies belong to house journal's product（The patent No.：2016211003331.9）, the unique structure type of technology use,
Filler special, special bacteria, the effect of denitrogenation dephosphorizing is issued in aeration condition, and clearance is up to more than 90%.3. use
MBR uses advanced film biologic treating technique, and sewage reaches after processing《Urban sewage reutilization water for scenic environment use water quality》
（GBT18921-2002）The discharge standard of middle ornamental water for scenic environment use water scenery class index, sewage is returned for landscape after processing
With or field irrigation etc. is many-sided utilizes, to realize recycling principle.The characteristics of technique is biological denitrification dephosphorization efficiency
Height, investment operating cost is low, stable and reliable operation, and the strong operational administrative of capacity of resisting impact load is simple etc..
Brief description of the drawings
Fig. 1 is the flow chart of samll cities and towns' rural sewage treatment process of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is a kind of flow chart of rural domestic sewage treatment process of the invention, below to samll cities and towns' domestic sewage in rural areas
Processing is mainly illustrated from sewage disposal, two technology paths of Treatment of Sludge.（Sewage after the present embodiment is handled with sewage disposal
Reach《Urban sewage reutilization water for scenic environment use water quality》（GBT18921-2002）Middle ornamental water for scenic environment use water scenery
Exemplified by the discharge standard of class index：
1st, sewage disposal key step includes：
1）Sewage self-flowing after being handled through septic tank collection is to frame trough 1, and the frame trough 1 is interior to place swinging mechanical grille,
Using stainless steel frame, pitch 5mm, for removing suspended pollution material larger in sewage, to prevent subsequent pipeline equipment
Block.
2）Step 1）Processing raw water carries out bulky grain inorganic matter in rotational flow grit chamber 2 and sunk from rotational flow grit chamber 2, sewage is flow to
Remove and remove.
3）Step 2）Processing raw water is flow to through pipeline collected from stream after hair interceptor is after hair collection is handled
Aerating regulation pond 3, homogeneous homogenizing is carried out in the one side of aerating regulation pond 3 to sewage, is on the other hand aerated and is made in swinging blower fan
Part organic pollution materials in sewage are removed with going down, subsequent treatment load is reduced；Hair interceptor main function collects pre-treatment
In the hair that does not remove, to prevent the blocking to follow-up film processing system.
4）Step 3）The processing boosted pump of raw water is promoted to ABR reaction tanks 4 and the Organic Pollution material in sewage is carried out
Degradation treatment, while being stirred to ensure that diving mixer is installed in reaction fully progress in ABR reaction tanks 4.
5）Step 4）Processing raw water carries out the denitrogenation dephosphorizing reaction of biology from MBBR ponds 5 are flow to.For needed for ensureing the reaction
DO=（2~4mg/L）, so being aerated using using swinging blower fan, general steam-water ratio is（15~20）:1.
6）Step 5）Handle raw water gravity flow and enter further the progress biological denitrogenation dephosphorizing and organic suspension of MBR reaction tanks 6
The removal of particle, the process is still aerated using swinging blower fan, and its purpose one is the oxygen needed for being provided to biological respinse,
Ensure the abundant progress of biological respinse；Two be that the sludge for being attached to film surface is rinsed, to mitigate the processing load of film, prolong
The service life of long film.
7）Step 6）Processing raw water is pumped to second pond 7 through suction pump and carries out mud-water separation, further removes pre-treatment list
Member fails the tiny particle contamination material removed.
8）Step 7）Raw water is collected through pipeline after processing, from reuse tank 9 is flow to for scape after being sterilized through ultraviolet ray disinfector 8
See the many-side such as reuse or field irrigation to utilize, realize recycling principle.
2nd, Treatment of Sludge key step includes：
The sludge that second pond 7 is produced is back to ABR reaction tanks 4 through stripper plant, and sewage is further removed under anaerobic environment
Phosphorous polluter；Excess sludge is promoted to sludge concentration tank 10 through stripper plant and carries out sludge condensation processing, the dirt after concentration
Mud carries out dewater treatment through folded spiral shell dewaterer 11, is carried out after the dry mud after dehydration is sterile-processed by the unit with corresponding qualification
The water produced in special processing, dehydration re-starts processing collected from flowing in aerating regulation pond 3 through pipeline.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
The problem of existing for traditional hospital sewage processing process, this technique has following characteristics：
1st, using ABR anaerobic reaction technologies
Anaerobic Treatment uses the ABR anaerobic reactors with unique texture in the present invention, and the technology is using unique inner structure shape
Formula, reactor is separated into several reative cells of series connection, and each reative cell is a relatively independent upflow sludge blanket
（UASB）System, sludge therein can exist with granulate form or in cotton-shaped form.Current guide vertical folding by deflector
Stream advances, and one by one by the sludge blanket in reative cell, the organic pollution in water inlet is fully contacted and degraded with microorganism
Remove, the advantage using ABR anaerobic reactions is that each independent reative cell of reactor tames adaptable with environmental condition at this
Microbial, effluent quality preferably, it is stable；Carrier is not filled out in Sludge Bed, three phase separator is not required to, it is to avoid blocks and saves
Investment-saving.
2nd, biochemical treatment uses MBBR technologies
This technique aerobic process uses " a kind of high efficiency MBBR reaction units " technology with house journal's technology（The patent No.：
201621103331.9）, the technology realizes denitrogenation dephosphorizing in sewage while organic matter removal in meeting to sewage, so with
Traditional rural domestic sewage treatment process is compared, capital cost reduction 20-30%, system run all right, capacity of resisting impact load
By force, the advantage such as operational administrative is simple.
3rd, using MBR film biologic treating techniques
From the point of view of the development form of water pollution industry in recent years, film biologic treating technique has turned into the master of following water treatment field
Stream technique, the present invention is using MBR films biologic treating technique and compound A/O Fuzzy Optimizations, on the basis of reduction construction costs
On realize sewage recycling requirement.
4th, using apparatus for ultraviolet disinfection
The end sterilization method commonly used in samll cities and towns' rural domestic sewage treatment is generally disappeared using disinfection by ultraviolet light and chlorine dioxide
Malicious two ways.Verified through Practical Project, the big defect of the disinfection by chlorine dioxide method amount of being primarily present：One is that reagent consumption amount is big, with
Based on theoretical calculation, with reference to chlorine dioxide generator in the practical application of rural domestic sewage treatment project, its reagent consumption
Amount is generally：Produce the consumption of 1g effective chlorine sodium chlorate 0.8g, hydrochloric acid 1.8g.
2NaClO3+4HCl=2ClO2+Cl2+2H2O+2NaCl
The available chlorine according to needed for domestic sewage in rural areas water quality characteristic is 8~10g/m3.It is dirty with day output 500t samll cities and towns
Exemplified by water treatment station, consumption pharmaceutical quantities are respectively：
The amount of hydrochloric acid：（8~10）G × 1.8g × 500=7200~9000g
Sodium chlorate amount：（8~10）G × 0.8g × 500=3200~4000g
By 1.5 yuan of hydrochloric acid one kilogram, 12 yuan of calculating of sodium chlorate one kilogram, then year reagent consumption expense is 2.24 ten thousand yuan.Thus may be used
See that its medicament is costly.In addition, disinfection by chlorine dioxide carries out dosing frequently with chlorine dioxide generator, and the equipment is normal
2-3 kilograms of hydraulic pressure is run, so its year consumption running water water is a lot of.
5th, sewage recoverable after handling
Using ABR+MBBR+MBR group technology forms, treatment effeciency and disposal ability are improved, the sewage after processing reaches《City
City's reuse of wastewater water for scenic environment use water quality》（GBT18921-2002）Middle ornamental water for scenic environment use water scenery class index
Discharge standard, sewage is used for that water reuse in landscape, field irrigation, road surface watering etc. are many-sided to be utilized after processing, realizes recycling profit
Use principle.
Claims (1)
1. a kind of samll cities and towns' rural sewage treatment process, it is characterised in that specifically include the following steps：
1）Grid is passed through in septic tank effluent gravity flow, to remove the suspended material that particle in sewage is larger；
2）Grid water outlet realizes girt-water separation from rotational flow grit chamber is flow to remove bulky grain inorganic particle in sewage；
3）Rotational flow grit chamber water outlet is collected after hair interceptor through pipeline from aerating regulation pond is flow to, and on the one hand sewage is entered
Homogeneous is homogenized, and on the other hand removing small part organic pollution materials by preaeration reduces the processing load of subsequent cell；
4）Water outlet boosted pump lifting in aerating regulation pond enters to be combined A/O reaction tanks and MBR reaction tanks, is degraded first with anaerobic bacteria
Complicated organic matter in sewage, improves Biodegradability of Wastewater, then organic pollution is converted first using the effect of biomembrane
For ammonia nitrogen, by aerobic nitrification and anoxic denitrification process not only organics removal but also ammonia nitrogen is eliminated, while existing using polyP bacteria
The phosphorus that aerobic stage is absorbed in sewage reaches dephosphorization purpose；
5）Sewage after biochemical treatment is pumped to second pond through suction pump and carries out separation of solid and liquid；
6）Treat sludge part sludge in reuse, second pond through stripper plant vapour into reuse pool after secondary clarifier effluent is sterilized
Carry to ABR reaction tanks and carry out dephosphorization processing, excess sludge is stripped to sludge concentration tank and carries out concentration, the sludge warp after concentration
Mud cake is delivered to the unit with sludge treatment qualification and handled after folded spiral shell dewaterer dehydration sterilization.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107986566A (en) * | 2017-12-12 | 2018-05-04 | 陈值英 | Water conservancy and hydropower environmental project sewage purification treatment equipment |
| CN108128975A (en) * | 2017-12-28 | 2018-06-08 | 重庆市桑麻环保科技有限公司 | A kind of method for treating rural wastewater |
| CN109534599A (en) * | 2018-12-12 | 2019-03-29 | 深圳合续科技开发有限公司 | A kind of family sewage water treatment method of strengthened denitrification |
| CN111138046A (en) * | 2020-03-03 | 2020-05-12 | 安徽绿衡环保科技有限公司 | Rear denitrification and denitrification filter device based on depth upgrading and treatment process thereof |
| CN112209506A (en) * | 2020-10-22 | 2021-01-12 | 江苏美能膜材料科技有限公司 | High-concentration dimethylacetamide wastewater treatment device and treatment method |
| CN112960771A (en) * | 2020-12-30 | 2021-06-15 | 武汉宝捷能环境工程技术有限公司 | Hydrolytic acidification and anaerobic composite ABR reactor and application method thereof |
| CN113024012A (en) * | 2020-12-24 | 2021-06-25 | 江苏力鼎环保装备有限公司 | Distributed household sewage treatment equipment and sewage treatment method thereof |
| CN113998834A (en) * | 2021-09-29 | 2022-02-01 | 中国电建集团华东勘测设计研究院有限公司 | Urban sewage comprehensive treatment and efficient recycling system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986566A (en) * | 2017-12-12 | 2018-05-04 | 陈值英 | Water conservancy and hydropower environmental project sewage purification treatment equipment |
| CN108128975A (en) * | 2017-12-28 | 2018-06-08 | 重庆市桑麻环保科技有限公司 | A kind of method for treating rural wastewater |
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| CN111138046A (en) * | 2020-03-03 | 2020-05-12 | 安徽绿衡环保科技有限公司 | Rear denitrification and denitrification filter device based on depth upgrading and treatment process thereof |
| CN112209506A (en) * | 2020-10-22 | 2021-01-12 | 江苏美能膜材料科技有限公司 | High-concentration dimethylacetamide wastewater treatment device and treatment method |
| CN113024012A (en) * | 2020-12-24 | 2021-06-25 | 江苏力鼎环保装备有限公司 | Distributed household sewage treatment equipment and sewage treatment method thereof |
| CN112960771A (en) * | 2020-12-30 | 2021-06-15 | 武汉宝捷能环境工程技术有限公司 | Hydrolytic acidification and anaerobic composite ABR reactor and application method thereof |
| CN113998834A (en) * | 2021-09-29 | 2022-02-01 | 中国电建集团华东勘测设计研究院有限公司 | Urban sewage comprehensive treatment and efficient recycling system |
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Application publication date: 20171017 |