CN104108793A - Wastewater treatment process and device capable of strengthening biological removal of nitrogen - Google Patents
Wastewater treatment process and device capable of strengthening biological removal of nitrogen Download PDFInfo
- Publication number
- CN104108793A CN104108793A CN201410391384.4A CN201410391384A CN104108793A CN 104108793 A CN104108793 A CN 104108793A CN 201410391384 A CN201410391384 A CN 201410391384A CN 104108793 A CN104108793 A CN 104108793A
- Authority
- CN
- China
- Prior art keywords
- zone
- oxygen
- starved area
- pond
- anaerobic zone
- 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
Abstract
The invention belongs to the technical field of biological treatment of wastewater. In allusion to the problem that the technological nitrogen removal effect is poor as the traditional process is high in inflow organic matter concentration to go against nitration and the denitrification effect in an anoxic zone at low temperature is poor, the invention discloses a wastewater treatment process and device capable of strengthening biological removal of nitrogen. The device comprises a treatment pond, wherein the inlet and the outlet of the treatment pond are respectively connected with an original pond and a secondary sedimentation tank; the treatment pond is internally provided with an anaerobic zone, an anoxic zone and an aerobic zone communicated with each other along the direction of water flow; each zone is internally divided into a plurality of same communicated reactive tanks by partition plates; the number ratio of the reactive tanks in the zones is 1: 2: 5. According to the C/N value of the inflow water, active biological stuffing is selectively added in the anaerobic zone and stuffing is added at the tail end of the aerobic zone and in the anoxic zone, so that the nitration capacity and the denitrification capacity of the process are enhanced and then the nitrogen removal property of the process is strengthened.
Description
Technical field
The present invention relates to a kind of sewage treatment process, especially a kind of biological denitrificaion sewage treatment process, specifically a kind of sewage treatment process of enhanced biological nitrogen removal.
The invention still further relates to a kind of device that adopts above-mentioned technique.
Background technology
Along with the development of industrial or agricultural, the continuous growth of the quickening of urbanization process and population, body eutrophication problem is day by day serious.Nitrogen and phosphorus are the principal elements that causes body eutrophication, and the index of the sign body eutrophication adopting is at present: total nitrogen in water body (TN) concentration is greater than 0.2 ~ 0.3mg/L, and total phosphorus (TP) concentration is greater than 0.01 ~ 0.02mg/L.For fear of with solve body eutrophication problem, China is more and more stricter to the requirement of discharge of wastewater, the < < urban wastewater treatment firm pollutant emission standard > > of China's promulgation in 2002 defines the emission concentration of nitrogen phosphorus, require water outlet ammonia nitrogen≤5mg/L, TN≤15mg/L, TP≤0.5mg/L.Visible bio-denitrifying sewage has become the key issue of biological sewage treatment.
At present, traditional sewage treatment process is mostly fairly simple, with anaerobism, anoxic and aerobic alternate run, reaches the object of simultaneously removing organism, denitrogenation, dephosphorization.But the denitrogenation in this conventional process flow is easily subject to the impact of entering organic matter of water impact load and low temperature, cause denitrification effect unstable.Therefore, be badly in need of developing a kind of sewage treatment process of comprehensive strengthened denitrification, and the device that is applicable to this technique.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of improved biological denitrificaion sewage treatment process and device thereof are provided, make sewage water denitrification more stable, Effluent criteria is higher.
Technical scheme of the present invention is:
A sewage treatment process for enhanced biological nitrogen removal, comprises that former water flows through anaerobic zone, oxygen-starved area and aerobic zone successively, carries out respectively dephosphorization and denitrogenation, then after second pond precipitation, flows out, further comprising the steps of:
A. in anaerobic zone, superfluous when former water carbon source, C/N >=10 o'clock, by the active bio filler in anaerobic zone, remove too much organic pollutant; In former water, carbon source is sufficient but not superfluous, during 4≤C/N < 10, without add active bio filler in anaerobic zone;
B. in oxygen-starved area, by active bio filler, increase the quantity of microorganism in oxygen-starved area, strengthen the denitrifying capacity under cold condition;
C. in aerobic zone, by appropriate active bio filler, promote the growth of nitrobacteria and the carrying out of nitrifying process.
Microbial film in described oxygen-starved area on active bio filler and suspended sludge, utilize the volatile acid of anaerobic zone hydrolysis generation and the organism in former water, to the nitric nitrogen of coming that refluxes, can carry out fast denitrification, promoted the removal effect of TN.
A kind of enhanced biological nitrogen removal waste disposal plant that adopts above-mentioned sewage treatment process, comprise treating pond, its import is connected with second pond with former pond respectively with outlet, in described treating pond, along water (flow) direction, be provided with anaerobic zone, oxygen-starved area and the aerobic zone being interconnected, each district's inner route clapboard separates into the reactive tank that a plurality of sizes are identical and be interconnected, and in Qie Ge district, the number of reactive tank is than being 1:2:5; In the total overall reaction groove of oxygen-starved area and the partial reaction groove of aerobic zone end, be provided with active bio filler; In anaerobic zone, arrange or active bio filler is not set, to meet the demand of different sewage water quality.
In each reactive tank of described anaerobic zone and oxygen-starved area, be equipped with whipping appts.
In the reactive tank of described aerobic zone, be equipped with aerator.
Between described second pond and anaerobic zone, be provided with pipeline and the pump machine of carrying mud.
Between the end of described aerobic zone and the front end of oxygen-starved area, be provided with pipeline and the pump machine of carrying nitrification liquid.
Beneficial effect of the present invention:
(1) can improve ability and the cryophylactic ability that anti-organic pollutant impacts, guarantee the denitrification ability of system stability, improve the emission standard of water outlet.
(2) in anaerobic zone and oxygen-starved area, add filler, utilize the microorganism growing on the filler of anaerobic zone and oxygen-starved area to remove organism, alleviated aerobic zone organic loading, indirectly promoted the Nitrification of aerobic zone, and saved aeration energy consumption.
(3) in oxygen-starved area, add filler, increased the amount of anoxic zone microorganisms, can resist low temperature to denitrifying detrimentally affect, strengthened the denitrifying capacity of system.
(4) at aerobic zone end, add filler, be beneficial to the growth of nitrobacteria, strengthened the nitrification ability of system.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is applicable to C/N >=10.
Fig. 2 is the structural representation that the present invention is applicable to 4≤C/N < 10.
Wherein: the former pond of 1-; 2-anaerobic zone; 3-oxygen-starved area; 4-aerobic zone; 5-second pond; 6-intake pump; 7-agitator; 8-blower fan; 9-nitrification liquid reflux pump; 10-sludge reflux pump; 11-active bio filler; 12-aerator; 13-treating pond.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiment 1:
As shown in Fig. 1, be to the present invention is directed to former water carbon source C/N >=10 when superfluous) embodiment, comprise treating pond 13, its import and exporting is connected with second pond 5 with former pond 1 respectively.Interior anaerobic zone 2, oxygen-starved area 3 and the aerobic zone 4 being interconnected that be provided with along water (flow) direction of described treating pond 13, each district's inner route clapboard separates into the reactive tank that a plurality of sizes are identical and be interconnected, and in Qie Ge district, the number of reactive tank is than being 1:2:5.In the present embodiment, anaerobic zone is provided with 1 reactive tank, and oxygen-starved area is provided with 2 reactive tanks, and aerobic zone is provided with 5 reactive tanks.In the total overall reaction groove of described anaerobic zone 2 and oxygen-starved area 3, and in 2 reactive tanks of aerobic zone 4 ends, active bio filler 11 is all set, packing ratio is 10 ~ 30%.It is the product of ZL200610096315.6 that active bio filler 11 used can be selected the patent No., and its diameter is 10-25mm, and proportion is 0.96, and voidage is 94-96%.In each reactive tank of described anaerobic zone 2 and oxygen-starved area 3, be equipped with agitator 7.In the reactive tank of described aerobic zone 4, be equipped with aerator 12, can guarantee the effective supply of oxygen.Between described second pond 5 and anaerobic zone 2, be provided with pipeline and the sludge reflux pump 10 of carrying mud, make the part mud after precipitation can be back to anaerobic zone 2.Between the front end of the end of described aerobic zone 4 and oxygen-starved area 3, be provided with pipeline and the nitrification liquid reflux pump 9 of carrying nitrification liquid, the nitrification liquid of aerobic zone 4 ends can be back to oxygen-starved area 3.
Principle of work below in conjunction with the present embodiment, the present invention's treatment process is described: former water tank 1 arranges intake pump 6 along water (flow) direction former water is injected to anaerobic zone 2, because anaerobic zone 2 has added active bio filler 11, under the abundant environment of organism, anaerobe film that filling surface can be grown a large amount of, has strengthened the ability that organic pollutants are removed in anaerobic zone 2.In the whipping process of agitator 7, anaerobe film on the filler 11 of former water and anaerobic zone 2 and the suspended sludge of backflow fully mix rear acidication and become micromolecular organic acid, and on filler, high density anaerobion can be removed the COD in a part of former water simultaneously.The small molecular organic acid that the then polyP bacteria utilization in suspended sludge produces is released phosphorus.Afterwards, sewage enters oxygen-starved area 3, because oxygen-starved area 3 has added filler, has increased the amount of oxygen-starved area 3 microorganisms, and then has strengthened the denitrifying capacity under 3 cold condition of oxygen-starved area.Microbial film on 3 fillers of oxygen-starved area and suspended sludge utilize volatile acid and the organism in former water that anaerobic zone 2 hydrolysis produce can carry out fast denitrification to the next nitric nitrogen of internal reflux, have promoted the removal effect of TN.Due to the removal through anaerobic zone 2 and oxygen-starved area 3 of the organism of former water, the organic concentration that enters aerobic zone 4 is lower, is beneficial to the carrying out of nitration reaction, and then has indirectly strengthened the nitrification ability of aerobic zone 4.The organism that enters aerobic zone 4 is further degraded by the suspended sludge of aerobic zone front end, and therefore organic concentration is lower endways, adds active bio filler 11 and is relatively conducive to the growth of nitrobacteria and the carrying out of nitrifying process.Therefore by anaerobic zone 2, oxygen-starved area 3 and aerobic zone 4 ends add the nitrification ability that filler has not only been strengthened system, and have strengthened the denitrifying capacity of system, are therefore conducive to the denitrification ability of lifting system.
The concrete performance of following Shi Mou sewage work application the present embodiment: 400,000 tons of m of sewage disposal
3/ d, sewage treatment process adopts A
2o technique, the one-level B standard in the former execution of water outlet < < urban wastewater treatment firm pollutant emission standard > > GB18918-2002, influent quality is as shown in the table:
Table 1 influent quality
| Water quality project | CODcr | BOD 5 | SS | TN | NH 3-N | TP | pH |
| Design former water mg/L | 650 | 270 | 400 | 65 | 48 | 6 | 6~9 |
COD/TN=10 in intaking as shown in Table 1, in water inlet, organic concentration is higher, causes aerobic zone organic loading better, is unfavorable for carrying out and the denitrogenation of nitration reaction, and water outlet ammonia nitrogen is difficult to reach one-level A emission standard.At aerobic section, added after 15% active bio filler, increased the nitrification ability of aerobic section, but water outlet ammonia nitrogen and TN exceed standard and still can not more stably reach one-level A standard.Finally, be respectively provided with after 15% filler in anaerobism section and anoxic section, the water outlet of Sewage Plant stably reached one-level A emission standard in 1 year.
Embodiment 2:
As shown in Figure 2, be the embodiment the present invention is directed to into carbon source in water sufficient but not superfluous (i.e. 4≤C/N < 10 in water inlet), its structure is substantially the same manner as Example 1, and active bio filler 11 is not just set in anaerobic zone.Its principle of work is also substantially the same manner as Example 1, just because carbon source in water inlet is sufficient but not superfluous, therefore without add active bio filler 11 in anaerobic pond 2, can avoid the microorganism in anaerobic zone 2 too much to consume carbon source and cause oxygen-starved area 3 carbon sources not enough, be unfavorable for the carrying out of denitrogenation.
The concrete performance of following Shi Mou sewage work application the present embodiment, its treatment scale is 150,000 tons, influent quality is: COD 450mg/L, BOD 250mg/L, SS 400 mg/L, ammonia nitrogen 40 mg/L, TN 52 mg/L, TP 4 mg/L, COD/TN=8.7, water outlet can only reach the one-level B standard in < < urban wastewater treatment firm pollutant emission standard > > GB18918-2002.In aerobic zone, be provided with after 30% active bio filler, strengthened the nitrification ability of aerobic section, under the condition that temperature is low in the winter time, water outlet ammonia nitrogen also can be stablized and reaches one-level A standard, but water outlet TN can not stablize the standard of reaching.Analyze former because oxygen-starved area denitrification effect is bad.In anoxic section, arrange after 10% active bio filler, increased the amount of denitrifying bacterium, the denitrifying capacity of lifting system.After this, the water outlet of Sewage Plant has stably reached one-level A emission standard in 1 year.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (7)
1. a sewage treatment process for enhanced biological nitrogen removal, comprises that former water flows through anaerobic zone, oxygen-starved area and aerobic zone successively, carries out respectively dephosphorization and denitrogenation, then after second pond precipitation, flows out, and it is characterized in that further comprising the steps of:
A. in anaerobic zone, by active bio filler, remove organic pollutant too much in former water;
B. in oxygen-starved area, by active bio filler, increase the quantity of microorganism in oxygen-starved area, strengthen the denitrifying capacity under cold condition;
C. in aerobic zone, by appropriate active bio filler, promote the growth of nitrobacteria and the carrying out of nitrifying process.
2. the sewage treatment process of enhanced biological nitrogen removal according to claim 1, it is characterized in that the microbial film on active bio filler and suspended sludge in described oxygen-starved area, utilize the volatile acid of anaerobic zone hydrolysis generation and the organism in former water, to the nitric nitrogen of coming that refluxes, can carry out fast denitrification, promote the removal effect of TN.
3. an enhanced biological nitrogen removal waste disposal plant that adopts the sewage treatment process described in claim 1, comprise treating pond, its import is connected with second pond with former pond respectively with outlet, it is characterized in that along water (flow) direction, being provided with anaerobic zone, oxygen-starved area and the aerobic zone being interconnected in described treating pond, each district's inner route clapboard separates into the reactive tank that a plurality of sizes are identical and be interconnected, and in Qie Ge district, the number of reactive tank is than being 1:2:5; In the total overall reaction groove of oxygen-starved area and the partial reaction groove of aerobic zone end, be provided with active bio filler; In anaerobic zone, arrange or do not arrange active bio filler.
4. the waste disposal plant of enhanced biological nitrogen removal according to claim 3, is characterized in that being equipped with whipping appts in each reactive tank of described anaerobic zone and oxygen-starved area.
5. the waste disposal plant of enhanced biological nitrogen removal according to claim 3, is characterized in that being equipped with aerator in the reactive tank of described aerobic zone.
6. the waste disposal plant of enhanced biological nitrogen removal according to claim 3, is characterized in that being provided with between described second pond and anaerobic zone pipeline and the pump machine of carrying mud.
7. the waste disposal plant of enhanced biological nitrogen removal according to claim 3, is characterized in that being provided with between the end of described aerobic zone and the front end of oxygen-starved area pipeline and the pump machine of carrying nitrification liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410391384.4A CN104108793A (en) | 2014-08-11 | 2014-08-11 | Wastewater treatment process and device capable of strengthening biological removal of nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410391384.4A CN104108793A (en) | 2014-08-11 | 2014-08-11 | Wastewater treatment process and device capable of strengthening biological removal of nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104108793A true CN104108793A (en) | 2014-10-22 |
Family
ID=51705809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410391384.4A Pending CN104108793A (en) | 2014-08-11 | 2014-08-11 | Wastewater treatment process and device capable of strengthening biological removal of nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104108793A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609556A (en) * | 2015-01-28 | 2015-05-13 | 浦华环保有限公司 | Condensed hydrolysis reinforced AAO biological nitrogen and phosphorus removal system and application thereof |
| CN105585125A (en) * | 2016-03-09 | 2016-05-18 | 李林 | Structure integration biological membrane reactor |
| CN109279694A (en) * | 2018-10-10 | 2019-01-29 | 浙江博华环境技术工程有限公司 | A kind of the high-efficient denitrification and dephosphorization device and process of the compound IFAS technology of multistage AO |
| CN113800635A (en) * | 2021-09-16 | 2021-12-17 | 江苏环川环境工程有限公司 | SED biochemical reactor for deeply removing high-concentration organic pollutants |
| CN116768366A (en) * | 2023-07-25 | 2023-09-19 | 云南合续环境科技股份有限公司 | Sewage treatment equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811797A (en) * | 2010-02-11 | 2010-08-25 | 新奥科技发展有限公司 | Coal gasification waste water biochemical treatment equipment and method |
-
2014
- 2014-08-11 CN CN201410391384.4A patent/CN104108793A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811797A (en) * | 2010-02-11 | 2010-08-25 | 新奥科技发展有限公司 | Coal gasification waste water biochemical treatment equipment and method |
Non-Patent Citations (1)
| Title |
|---|
| 张辰主编: "《水厂设计 污水厂设计》", 30 September 2011 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609556A (en) * | 2015-01-28 | 2015-05-13 | 浦华环保有限公司 | Condensed hydrolysis reinforced AAO biological nitrogen and phosphorus removal system and application thereof |
| CN105585125A (en) * | 2016-03-09 | 2016-05-18 | 李林 | Structure integration biological membrane reactor |
| CN109279694A (en) * | 2018-10-10 | 2019-01-29 | 浙江博华环境技术工程有限公司 | A kind of the high-efficient denitrification and dephosphorization device and process of the compound IFAS technology of multistage AO |
| CN113800635A (en) * | 2021-09-16 | 2021-12-17 | 江苏环川环境工程有限公司 | SED biochemical reactor for deeply removing high-concentration organic pollutants |
| CN116768366A (en) * | 2023-07-25 | 2023-09-19 | 云南合续环境科技股份有限公司 | Sewage treatment equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105884028B (en) | The apparatus and method of continuous flow municipal sewage short distance nitration Anammox coupling denitrification dephosphorization | |
| CN103601341B (en) | SBR (Sequencing Batch Reactor) and SBBR (Sequencing Biofilm Batch Reactor) municipal sewage high-efficiency biological treatment method and device based on anaerobic ammonia oxidation | |
| CN102633359B (en) | Method for treating total nitrogen of nitrogen-containing chemical wastewater | |
| CN102583736B (en) | Sewage biochemical treatment process and device utilizing active sludge and biological membrane combined circulating flow | |
| CN104761097B (en) | It is a kind of suitable for high concentration, the processing method of organic wastewater with difficult degradation thereby total nitrogen | |
| CN105461061A (en) | A<2>/O-biology synchronous nitrogen and phosphorus removal device and method for urban sewage | |
| CN105384247B (en) | It is a kind of that the method that part denitrification couples Anammox denitrogenation is realized by A/O biomembrane process | |
| CN103121754B (en) | A kind of denitrification dephosphorization technique | |
| CN103936150A (en) | Continuous flow low C/N (carbon/nitrogen ratio) municipal wastewater partial nitrification/ anaerobic ammonia oxidation and denitrification nitrogen removal method | |
| CN101723510A (en) | Preliminary dexidation-anaerobism-oxygen deficit-multistage aerobic/anaerobic biological N and P removing method and device | |
| CN201952322U (en) | Anaerobic micropore aeration oxidation ditch reactor | |
| CN106745743A (en) | A kind of sewage denitrification dephosphorization system | |
| CN105540846A (en) | Low-carbon-source municipal sewage improved UCT autotrophic denitrification dephosphorization device and application method thereof | |
| CN112897696B (en) | Device and method for biological nitrogen and phosphorus removal based on staged water inflow | |
| CN105217890A (en) | A is strengthened based on DEAMOX 2the apparatus and method of/O+ Biological Contact Oxidation Process biological carbon and phosphorous removal | |
| CN104108793A (en) | Wastewater treatment process and device capable of strengthening biological removal of nitrogen | |
| CN104724889A (en) | Sewage treatment system and sewage treatment method for reducing greenhouse gas emission | |
| CN103951059A (en) | Multi-cycle composite bioreactor and process thereof | |
| CN201240944Y (en) | Facultative aerobic / aerobic / facultative aerobic coking waste water biological full denitrification processing device | |
| CN106348448A (en) | Wastewater treatment process for advanced bio-denitrification | |
| CN103482819A (en) | Device and method for processing domestic wastewater by means of A2O and submerged biological filter | |
| CN103112948A (en) | Method for rapidly culturing autotrophic nitrogen removal granule sludge under conditions of low substrate concentration and high ascending velocity | |
| CN203593686U (en) | Anammox-based SBR+SBBR urban highly-effective wastewater biological treatment device | |
| CN109019862A (en) | The device and method of intermittent aerating synchronous nitration and denitrification combined short period denitrification anaerobic ammoxidation realization domestic sewage advanced denitrogenation | |
| CN105198168A (en) | A2/O-MBR-biological contact oxidation pond dual-sludge high-efficiency denitrifying phosphorus removal device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141022 |