CN1807282A - Sewage treatment method and filtering pool - Google Patents
Sewage treatment method and filtering pool Download PDFInfo
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- CN1807282A CN1807282A CN 200410026149 CN200410026149A CN1807282A CN 1807282 A CN1807282 A CN 1807282A CN 200410026149 CN200410026149 CN 200410026149 CN 200410026149 A CN200410026149 A CN 200410026149A CN 1807282 A CN1807282 A CN 1807282A
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- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to a treatment method for sewage. Wherein, keeping the sewage flowing from lower to upper during the whole process; first, taking denitrifying treatment in hypoxia segment to remove total nitrogen and phosphorus; then, treating in aerobic segment to reduce the COD, BOD5 and SS as well as the ammonia nitrogen by nitration. Besides, the opposite equipment is a vertical-arranged bioaeration filter tank with an aeration pipe on proper position.
Description
Technical field
The present invention relates to a kind of method that sewage is handled, and adopt method of the present invention to carry out the sewage treatment facility of sewage disposal.Comprise the living aerating filter and the anoxic denitrification processing section that make treatment sewage pass through the aerobic nitrification processing section in the method for the present invention.
Background technology
Existing sewage water treatment method is to make treatment sewage enter each sewage diposal area of lateral arrangement respectively successively, as detention tank, aerobic nitrification treatment zone, anoxic denitrification treatment zone etc., carries out corresponding purifying treatment respectively.The treatment unit that matches with existing sewage treatment process is a series for the treatment of ponds of horizontal arranged in series.Late 1980s has produced biological aerated filter (BAF) to the nineties on the basis of ordinary biofilter, and because numerous advantages of upward flow filter are admitted by people, Jue Daduoshuo biological aerated filter had all adopted the upward flow structure in recent years.The basic structure of this class biological aerated filter is the supporting layer that useful cobble or magnetite are formed on the buffering water distributing area, on supporting layer, place filtrate and form filter material layer, above filter material layer ground, be exhalant region, on exhalant region, be provided with the effluent trough and the rising pipe of band crest of weir, processed sewage water-supply pipe and back flushing water-supply pipe, back flushing air-supply duct all are located in the buffering cloth pool, and aerating system generally is to be located among the supporting layer.Can be about the structure of existing biological aerated filter referring to " biological aerated filter sewage disposal new technology and case history " the 28th page (Chemical Industry Press, Environmental Science and Engineering publishing centre May in 2002 the 1st edition).This kind equipment is mainly removed COD, BOD, SS and the NH in the sewage
3-N (ammonia nitrogen), but because of entire equipment is an aerobic section, so very low to the clearance of total nitrogen in the sewage and phosphorus.For solving this deficiency of prior art, generally still need hydrolytic tank is set before biological aerated filter again, utilize the C in the sewage under anaerobic environment, to carry out the denitrification processing.This shows described this treatment process still belong to the lateral arrangement treating pond treatment process.
Prior art has following deficiency:
1, because each treating pond is a lateral arrangement, therefore need take the larger area soil, simultaneously the facility structure relative complex.
2, be the mobile of sewage between each treating pond of realization, need carry out the conveying of sewage, need build a plurality of ponds body simultaneously, therefore also need higher investment with many water pumps.
3, having in the technology is to guarantee that filtrate and microorganism in the filter tank can have sufficient contact reacts with sewage, need the equipment whipping device, and stir fully when the sewage disposal operation, so its power consumption is higher.
4, anoxic denitrification of the prior art is handled regular meeting because of the lower effect that influences its processing of carbon content in the sewage.
Summary of the invention
The invention provides a kind of new sewage water treatment method, adopt this method both can guarantee the effect of sewage disposal, can simplify the water processing establishment structure to greatest extent again, reduce the area that water processing establishment took up an area of, reduce the construction investment and the cost of sewage treatment facility, and overcome other deficiency that prior art exists.
Second purpose of the present invention provides a kind of new texture filter tank of disposing of sewage of adopting sewage water treatment method of the present invention.
Sewage water treatment method of the present invention is to make treatment sewage longitudinally flow through the biological aerated filter of anoxic denitrification processing section and aerobic nitration treatment section, and effluent stream pending when carrying out sewage disposal flows from start to finish from bottom to top.At first make sewage carry out denitrification during sewage disposal and handle removing total nitrogen and total phosphorus, and then enter aerobic section and handle, to reduce chemical oxygen demand (COD), biological oxygen demand (BOD) (BOD by the anoxic section
5) and suspended substance (SS), and by the ammonia nitrogen in the nitrification removal sewage.This method is different through the prior art of different treatment section along transverse flow with the existing sewage that makes, and adopts this method can simplify the process of sewage disposal, can make simultaneously more simple that the structure of water processing establishment becomes.
Handle because of the lower deficiency that influences treatment effect of carbon content in the sewage for overcoming denitrification of the prior art, the present invention can be flowed out a part with moisture after treatment, make it reenter the top of treatment system, can increase the carbon content in the treatment sewage like this, help denitrification and handle.
The facility that adopts sewage water treatment method of the present invention is that the water treatment filter tank is vertically arranged, water inlet pipe and recoil water pipe are set in the supporting layer of its bottom, filter material layer is set on supporting layer, on filter material layer, set out the pool, exhalant region is provided with rising pipe and recoil water rising pipe, is provided with aeration tube at nearly 1/3rd places of filter material layer height overall.This structure makes whole filter material layer be divided into the anoxic section of bottom and the aerobic section on top by aeration tube.The height of anoxic section can be according to amount nitrogenous in the sewage, phosphorus, carbon in the sewage/nitrogen ratio, and the sewage purification degree of design requirements is determined.
When sewage treatment facility of the present invention is worked, when sewage after the supporting layer of filter tank lower floor enters in the body of pond, promptly enter into the anoxic section (generally the dissolved oxygen content of this section water is smaller or equal to 0.5mg/L) that is positioned at below the aeration tube, along with current move upward, sewage can fully carry out anti-nitration reaction under the effect of the anaerobion that is attached to filter material surface, nitrogen in the sewage, phosphorus equal size are reduced; In the time of above sewage arrives aeration tube, (generally the dissolved oxygen content of this section water is more than or equal to 1～2mg/L) promptly to enter aerobic section, increase the sewage oxygen level that be in aeration tube top through the aeration tube escaping gas this moment, simultaneously under the effect of the aerobian that is attached to filter material surface, can fully carry out nitration reaction, make the ammonia in the sewage oxidized, discharge the catchment area of final water after treatment above filter material layer.And since in whole treating processes sewage be mobile from bottom to top, can fully contact between water and filtrate, and no longer need the mechanical stirring device of peripheral hardware to stir.
In the water processing establishment of the present invention, be to be positioned at and establish the rising pipe that has crest of weir above the exhalant region, on rising pipe, be provided with the isocon of inlet pipe UNICOM.This structure can make after treatment portion water enter the top of system, replenishes the carbon in the sewage that enters treatment facility, improves nitration reaction efficient.
Method of the present invention is that processed sewage is carried out in the entire treatment process all the time from bottom to top, can provide condition for the simplification of facility structure.
Facility of the present invention is that the anoxic section is built in the biological aerated filter appropriate location, specifically be that the aeration gas distribution system is arranged in the appropriate location of the filter material layer on the supporting layer, make the filter material layer between the gas distribution system that supporting layer and aeration tube constitute form an anoxybiotic zone, sewage carries out anti-nitration reaction in this zone, can reduce total nitrogen and phosphorus in the sewage, and the filter material layer that is positioned on the aeration tube becomes aerobic section naturally, organism in the degradation of sewage is effectively eliminated COD in the sewage, BOD, SS etc. effectively; Simultaneously because longitudinally the anoxic section and the aerobic section of layout have filtrate, and on filtrate, belong to different microorganisms, current are through upwards flowing down simultaneously, therefore when device work, especially neither need to be provided with agitator, also do not need to increase aeration rate, its energy-saving effect is fairly obvious, and is low more than 25% according to the more similar processing unit of measuring and calculating running cost of the present utility model; And vertically arrange because of anoxic section and aerobic section, need not to establish in addition the nitration treatment pond, can also save and take up an area of more than 20%.Simultaneously as can be seen, structure of the present invention is more simple, and its manufacturing cost also can be lower.When the present invention adopts on water purification rising pipe after treatment when being connected with the backwater pipe structure that is communicated with the treatment sewage pond with threeway, both can adjust the carbon/nitrogen ratio of treatment sewage, help anti-nitration reaction, can also make that content of microorganisms suitably improves in the sewage that carries out treatment system.
Description of drawings
Accompanying drawing is the example structure synoptic diagram of water processing establishment of the present invention, wherein: 1 is bio-aeration pool, 2 is crest of weir, 3 is annular water outlet, and 4 are the water purification rising pipe after handling, and 5 for being communicated with the return line in pending pond, 6 for being located at the valve on the return line, 7 for waiting for the processing pond, and 8 is water pump, and 9 is supporting layer, 10 is the aeration gas distribution system, 11 are the recoil water pipe, and 12 are the recoil tracheae, and 13 is the anoxic section in the aeration tank, 14 is the aerobic section in the aeration tank, 15 is sewage water inlet pipe, 16 annular water tanks, 17 sewage inlet pipe.
Embodiment
At embodiments of the invention is to be made of bio-aeration pool 1, treatment sewage pond 7 and the pipeline that is communicated with etc.In the present embodiment, the diameter of aeration tank 1 is 400 millimeters, and total height is 4150 millimeters, and the height of whole filter material layer is 2500 millimeters.The supporting layer 9 that 1 the useful cobble of going to the bottom is formed in the pond, and sewage water inlet pipe 15 and back flushing water pipe 11, recoil tracheae 12 also are located in the supporting layer 9.Placement has the filtrate of microorganism on supporting layer 9, and is provided with the gas distribution system that aeration tube 10 constitutes in the filter material layer on supporting layer, and the aspect ratio between the filter material layer of the filter material layer on aeration tube top and aeration tube bottom is about 3.5 to 1.As seen from the figure, at supporting layer and 10 of aeration tubes one section space is arranged, when real work, will upwards float through managing 10 gases that enter, and can not move downward, therefore this section must be one section suitable anoxic section of surviving with the anerobe that carries out anti-nitration reaction when real work, and manage 10 with top, then because gas moves upward, must form aerobic section.Top in the aeration tank is provided with the crest of weir 2 of taper type, is an annular tank 16 in its periphery, is provided with rising pipe 4 on tank 16.Be connected to shunting return water pipe 5 with threeway on the rising pipe 4.And return water pipe 5 is interconnected with pending pond 7.On pending pond 7, be provided with sewage inlet pipe 17, and be provided with water pump 8 and pending water introduced the water pipe of aeration tank 1.
The processing parameter that present embodiment is relevant is:
Hydraulic detention time: 1.5 hours
Water-gas ratio: 1: 3.5
Reflux ratio: 60%
Adopt air water to unite recoil, recoil water accounts for handles 8% of the water yield
Sludge yield: 0.4KG (SS)/KG (removing COD)
The recoil cycle: one day
Treatment sewage (through preliminary sedimentation) water quality is:
COD (chemical oxygen demand): 273～385mg/L
BOD
5(biological oxygen demand (BOD)): 117～156mg/L
SS (suspended substance): 86～122mg/L
NH3-N (ammonia nitrogen): 35～31mg/L
TN (total phosphorus): 35～45mg/L
TP (total phosphorus) :-
The present invention is when operation, sewage moves upward through cobble supporting layer 9 under the effect of intake pressure in the bottom enters aeration tank 1, and at first enters into anoxic section 13, and contact with the anaerobion of filter material surface and to carry out anti-nitration reaction, the nitrogen that produces or ammonia will float and overflow.When liquid flow after the part, promptly forms aeration to the aeration tube 10, and with the aerobic microbiological generation effect of filter material surface, make carbon source contact scar thing degradeds such as organism.Water purification after treatment flows in the tank 16 from the gap of crest of weir 2, and flows out through managing 4.Because the shunting return water pipe 15 that useful threeway connects on the pipe 4, therefore part water (carbon source that has microorganism in it and degraded) after treatment can return in the pending pond 7, make the treatment sewage in the pond have a certain amount of microorganism, simultaneously carbon in the sewage/nitrogen ratio is changed, this will help the carrying out of subsequent disposal reaction.After testing, the water quality after the processing all reaches " urban wastewater treatment firm pollutant emission standard " one-level B standard in (GB18918-2002), and part index number also is better than aforesaid standards.
The present invention is not limited to embodiment in concrete enforcement.For example, the height of anoxic section can be determined according to the particular case of sewage and the processing parameter of design.And also can adopt other supporting layer structure of non-cobble in the filter tank.
Claims (4)
1, the treatment process of sewage, treatment sewage is successively handled and the anoxic denitrification processing section by the living aerating filter of aerobic nitrification processing section, it is characterized in that treatment sewage current when handling flow from start to finish from bottom to top, at first carrying out denitrification by the anoxic section handles to remove total nitrogen and total phosphorus, and then the aerobic section that enters bio-aeration handles, to reduce chemical oxygen demand (COD), biological oxygen demand (BOD) (BOD
5) and suspended substance (SS), and by the ammonia nitrogen in the nitrification removal sewage.
2, sewage water treatment method according to claim 1 is characterized in that a moisture flow part after treatment enters the top of treatment system with treatment sewage.
3, a kind of filter tank of disposing of sewage, it is characterized in that the filter tank vertically arranges, water inlet pipe and recoil water pipe are set in the supporting layer of its bottom, filter material layer is set on supporting layer, on filter material layer, set out the pool, exhalant region is provided with rising pipe and recoil water rising pipe, is provided with aeration tube at nearly 1/3rd places of filter material layer height overall, whole filter material layer is divided into anoxic section that is positioned at the aeration tube bottom and the aerobic section that is positioned at aeration tube top.
4, filter tank of disposing of sewage according to claim 3 is characterized in that being positioned at and establishes the rising pipe that has crest of weir above the exhalant region, is provided with the isocon with itself and water inlet pipe UNICOM on rising pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410026149 CN1807282A (en) | 2003-09-29 | 2004-05-11 | Sewage treatment method and filtering pool |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03263211 CN2706465Y (en) | 2003-09-29 | 2003-09-29 | Bioaeration filter pond |
| CN03263211.8 | 2003-09-29 | ||
| CN 200410026149 CN1807282A (en) | 2003-09-29 | 2004-05-11 | Sewage treatment method and filtering pool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1807282A true CN1807282A (en) | 2006-07-26 |
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ID=36839408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410026149 Pending CN1807282A (en) | 2003-09-29 | 2004-05-11 | Sewage treatment method and filtering pool |
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| CN (1) | CN1807282A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001802A (en) * | 2010-12-31 | 2011-04-06 | 上海交通大学 | Nitrification and denitrification combined integral biological filter |
| CN101700952B (en) * | 2009-11-09 | 2011-06-01 | 中国海洋石油总公司 | Low-carbon high-nitrogen wastewater treatment device |
| CN108726818A (en) * | 2018-08-13 | 2018-11-02 | 湖南北控威保特环境科技股份有限公司 | A kind of integration MBR sewage-treatment plants and its processing method |
| CN108773903A (en) * | 2018-08-13 | 2018-11-09 | 湖南北控威保特环境科技股份有限公司 | A kind of up-flow AO sewage-treatment plants and its processing method |
-
2004
- 2004-05-11 CN CN 200410026149 patent/CN1807282A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700952B (en) * | 2009-11-09 | 2011-06-01 | 中国海洋石油总公司 | Low-carbon high-nitrogen wastewater treatment device |
| CN102001802A (en) * | 2010-12-31 | 2011-04-06 | 上海交通大学 | Nitrification and denitrification combined integral biological filter |
| CN108726818A (en) * | 2018-08-13 | 2018-11-02 | 湖南北控威保特环境科技股份有限公司 | A kind of integration MBR sewage-treatment plants and its processing method |
| CN108773903A (en) * | 2018-08-13 | 2018-11-09 | 湖南北控威保特环境科技股份有限公司 | A kind of up-flow AO sewage-treatment plants and its processing method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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