CN204550197U - A kind for the treatment of unit being applicable to high density, difficult degradation organic nitrogen-containing waste water total nitrogen - Google Patents
A kind for the treatment of unit being applicable to high density, difficult degradation organic nitrogen-containing waste water total nitrogen Download PDFInfo
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- CN204550197U CN204550197U CN201520105311.4U CN201520105311U CN204550197U CN 204550197 U CN204550197 U CN 204550197U CN 201520105311 U CN201520105311 U CN 201520105311U CN 204550197 U CN204550197 U CN 204550197U
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Abstract
Be applicable to a treatment unit for high density, difficult degradation organic nitrogen-containing waste water total nitrogen, comprise be connected in series successively by pipeline pre-anaerobic pond, the first settling tank, one-level anaerobic pond, one-level Aerobic Pond, the second settling tank, secondary anaerobic pond, secondary Aerobic Pond and the 3rd settling tank.The utility model, by establishing pre-anaerobic pond, reduces organic loading to the impact of subsequent biochemical system, improves the biodegradability of concentration and difficult degradation organic nitrogen-containing waste water, be beneficial to follow-up nitrated anti-nitration reaction simultaneously; If two-stage anaerobic pond and two-stage aerobic pond, be arranged alternately, mainly carry out nitrification and the denitrification of organic degraded and ammonia nitrogen; If three settling tanks, solve containing higher COD and NH
3the problem that the organic nitrogen-containing wastewater effluent ammonia nitrogen of-N is unstable, water outlet total nitrogen cannot be effectively controlled, achieves the high efficiency of biochemical treatment system, energy-saving, improves the tolerance to Pollutant levels change and impact resistance.
Description
Technical field
The utility model relates to a kind of technical field of waste water processing, particularly a kind for the treatment of unit being applicable to high density, difficult degradation organic nitrogen-containing waste water total nitrogen.
Background technology
High density, difficult degradation organic nitrogen-containing waste water have the characteristics such as Pollutant levels are high, complicated component, toxicity are large, salinity is high, organic amino concentration is high, waste water can be biochemical poor, conventional method of wastewater treatment is adopted to be difficult to meet qualified discharge requirement, especially the organonitrogen overwhelming majority of water outlet can not be eradicated by biological nitrification and denitrification with the form of inorganic nitrogen, cause eutrophication that in water outlet, nitrogen element causes and wawter bloom phenomenon further obvious.And along with the development of industrial and agricultural production, quantity of wastewater effluent gets more and more, high density, difficult degradation organic nitrogen-containing waste water type are more complicated, and water pollution is more and more serious, and Environmental Protection Situation will be severeer.For the emission standard of high density, difficult degradation organic nitrogen-containing waste water total nitrogen, every country makes strict restriction one after another.China promulgated " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) in 2002, claimed to always nitrogen discharged; 2012, Chinese Ministry of Environmental Protection promulgated and has revised " coking industry pollution discharge standard ", and add total nitrogen performance assessment criteria to coking industry discharge of wastewater, standard specifies direct waste discharge total nitrogen≤15mg/L, indirect waste discharge total nitrogen≤30mg/L.And the other industry such as pharmaceutical industries, dyeing total nitrogen emission standard proposes new requirement, the emission standard of same developed country is integrated with.
The improvement of high density, difficult degradation organic nitrogen-containing waste water total nitrogen is a present price section home and abroad environment resist technology field difficult problem urgently to be resolved hurrily, is that current field of environment engineering is the most urgent, one of the problem needing most research.The treatment process of nitrogenous effluent has Physical, chemical method and biochemical process etc.Physical method has reverse osmosis, distillation, soil irrigation; Chemical method has ion exchange method, air stripping, chemical precipitation method, break point chlorination, electrodialysis, electrochemical treatment, catalytic cracking.The ammonia nitrogen waste water of Physical process high density, effluent quality almost can not qualified discharge, mostly as the pre-treatment of biological or chemical process.Often containing poisonous organism greatly in the byproduct that in physico-chemical processes process ammonia nitrogen waste water process, cost intensive, energy consumption be high, produce, easily cause secondary environmental pollution.Biochemical process, as a kind of economic, efficient denitrogenation method, is the maximum ammonia nitrogen waste water treatment method adopted both at home and abroad at present.
Summary of the invention
Technical problem to be solved in the utility model is for the deficiencies in the prior art, provides a kind of reasonable in design, can thoroughly solve containing higher COD and NH
3the treatment unit of the problem that-N concentration organic nitrogen-containing wastewater effluent ammonia nitrogen is unstable, water outlet total nitrogen cannot be effectively controlled.
Technical problem to be solved in the utility model is realized by following technical scheme, the utility model is that one is applicable to high density, the treatment unit of difficult degradation organic nitrogen-containing waste water total nitrogen, be characterized in, comprise the pre-anaerobic pond be connected in series successively by pipeline, first settling tank, one-level anaerobic pond, one-level Aerobic Pond, second settling tank, secondary anaerobic pond, secondary Aerobic Pond and the 3rd settling tank, between first settling tank and one-level anaerobic pond, between one-level anaerobic pond and one-level Aerobic Pond, between second settling tank and secondary anaerobic pond, pipeline between secondary anaerobic pond and secondary Aerobic Pond is equipped with lift pump, first settling tank is connected with pre-anaerobic pond by sludge reflux pipeline, one-level Aerobic Pond is connected with one-level anaerobic pond by one-level return line, secondary Aerobic Pond is connected with secondary anaerobic pond by secondary return line, and the first settling tank is connected with the 3rd settling tank by blow-off line with the second settling tank, heating and temperature controlling device and whipping appts is equipped with in described one-level anaerobic pond and secondary anaerobic pond, aerating apparatus is provided with in described one-level Aerobic Pond and secondary Aerobic Pond, aerating apparatus is connected with the aeration pump be located at outside Aerobic Pond by aerating pipelines, and described sludge reflux pipeline, one-level return line and secondary return line are equipped with reflux pump.
Technical problem to be solved in the utility model can also be realized further by following technical scheme, at the above-described treatment unit being applicable to high density, difficult degradation organic nitrogen-containing waste water total nitrogen, it is characterized in that: on described aerating pipelines, spinner-type flowmeter is housed.
Technical problem to be solved in the utility model can also be realized further by following technical scheme, at the above-described treatment unit being applicable to high density, difficult degradation organic nitrogen-containing waste water total nitrogen, it is characterized in that: be provided with water port on the top of described 3rd settling tank, be provided with mud discharging mouth in the bottom of the 3rd settling tank.
The utility model is by establishing pre-anaerobic pond, and reduce organic loading to the impact of subsequent biochemical system, improve the biodegradability of concentration and difficult degradation organic nitrogen-containing waste water, the nitrogen ammonification simultaneously making organic is the nitrogen of inorganic states, is beneficial to follow-up nitrated anti-nitration reaction; If one-level anaerobic pond, one-level Aerobic Pond, secondary anaerobic pond and secondary Aerobic Pond, mainly carry out nitrification and the denitrification of organic degraded and ammonia nitrogen; If the first settling tank, the second settling tank and the 3rd settling tank, circulate and mud and clear water reacted, improve reaction effect, avoid waste.Compared with prior art, it is reasonable in design, easy to operate, solves containing higher COD and NH
3the problem that the organic nitrogen-containing wastewater effluent ammonia nitrogen of-N is unstable, water outlet total nitrogen cannot be effectively controlled, achieve the high efficiency of biochemical treatment system, energy-saving, improve the tolerance to Pollutant levels change and impact resistance, reduce floor space, reduce working cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Referring to accompanying drawing, further describe concrete technical scheme of the present utility model, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
Embodiment 1, with reference to Fig. 1, a kind for the treatment of unit being applicable to high density, difficult degradation organic nitrogen-containing waste water total nitrogen, comprise be connected in series successively by pipeline pre-anaerobic pond 1, first settling tank 2, one-level anaerobic pond 4, one-level Aerobic Pond 8, second settling tank 10, secondary anaerobic pond 13, secondary Aerobic Pond 15 and the pipeline between the 3rd settling tank 19, first settling tank 2 and one-level anaerobic pond 4, between one-level anaerobic pond 4 and one-level Aerobic Pond, between the second settling tank 10 and secondary anaerobic pond 13, between secondary anaerobic pond 13 and secondary Aerobic Pond 15 are equipped with lift pump 11; First settling tank 2 is connected with pre-anaerobic pond 1 by sludge reflux pipeline 21, one-level Aerobic Pond 8 is connected with one-level anaerobic pond 4 by one-level return line 7, secondary Aerobic Pond 15 is connected with secondary anaerobic pond 13 by secondary return line 12, and the first settling tank 2 is connected with the 3rd settling tank 19 by blow-off line 20 with the second settling tank 10; Heating and temperature controlling device 5 and whipping appts 6 is equipped with in described one-level anaerobic pond 4 with secondary anaerobic pond 13, aerating apparatus 9 is provided with in described one-level Aerobic Pond 8 with secondary Aerobic Pond 15, aerating apparatus 9 is connected with the aeration pump 18 be located at outside Aerobic Pond by aerating pipelines 16, and described sludge reflux pipeline 21, one-level return line 7 and secondary return line 12 are equipped with reflux pump 14.
Embodiment 2, is applicable in the treatment unit of high density, difficult degradation organic nitrogen-containing waste water total nitrogen described in embodiment 1: on described aerating pipelines 16, spinner-type flowmeter 17 is housed.
Embodiment 3, is applicable in the treatment unit of high density, difficult degradation organic nitrogen-containing waste water total nitrogen described in embodiment 1: be provided with water port on the top of described 3rd settling tank 19, be provided with mud discharging mouth in the bottom of the 3rd settling tank 19.
The water outlet of pre-anaerobic pond 1, the first settling tank 2 is entered by pipeline, amount of activated mud in first settling tank 2 is under the effect of reflux pump 14, be back in pre-anaerobic pond 1 by sludge reflux pipeline 21, rest part active sludge in first settling tank 2 is entered in the 3rd settling tank 19 by blow-off line 20, discharges with the form of excess sludge; Pre-anaerobic pond 1 adopts UASB form, and maintain hydraulic detention time 12h, temperature maintains about 35 DEG C, after pre-anaerobic pond 1, B/C rises to about 0.28, and the biodegradability of pharmaceutical wastewater is increased, remove partial organic substances simultaneously, reduce organic loading to the impact of subsequent biochemical system.
First settling tank 2 water outlet, under the effect of lift pump 11, enter in one-level anaerobic pond 4 by pipeline, one-level anaerobic pond 4 mainly carries out biological denitrification, and be provided with heating and temperature controlling device 5 and whipping appts 6 in one-level anaerobic pond 4, hydraulic detention time is at 14h; One-level anaerobic pond 4 water outlet, enters one-level Aerobic Pond 8, and one-level Aerobic Pond 8 mainly carries out the nitrification of organic degraded and ammonia nitrogen, and dissolved oxygen controls at 3.5mg/L, and hydraulic detention time is at 34h; Part nitrification liquid in one-level Aerobic Pond 8 flows back in one-level anaerobic pond by one-level return line; One-level Aerobic Pond 8 water outlet, flow in the second settling tank 10, the active sludge in the second settling tank 10 is entered in the 3rd settling tank 19 by mud pipeline, discharges with the form of excess sludge.
Second settling tank 10 water outlet, by pipeline and lift pump, flows in secondary anaerobic pond 13, heating and temperature controlling device 5 and whipping appts 6 is provided with in secondary anaerobic pond 13, denitrification is mainly carried out in secondary anaerobic pond 13, and remove remaining nitrate and/or nitrous acid further, hydraulic detention time is at 9h; Secondary anaerobic pond 13 water outlet, enters secondary Aerobic Pond 15; The part ammonia nitrogen of remnants is carried out nitrification by secondary Aerobic Pond 15 further, and ensure that water outlet COD is up to standard, dissolved oxygen controls at 3.5mg/L, and hydraulic detention time is at 18h; Part nitrification liquid in secondary Aerobic Pond 15 is back in secondary anaerobic pond 13 by secondary return line 12 and reflux pump; After being reacted by the aerating apparatus 9 in secondary Aerobic Pond 15, enter in the 3rd settling tank 19, discharge with the form of excess sludge, the excess sludge in the 3rd settling tank 19 is by sludge condensation, dehydration, outward transport process after press filtration, supernatant liquor carries out outer row after clean water basin.
Adopt two-stage anoxic-aerobic activated sludge nitrogen rejection facility process waste water, effectively can improve the removal efficiency of total nitrogen; Pre-anaerobic technique is a kind of novel anaerobic treatment process, between product acid and the methane phase stage of anaerobic treatment process, the forms such as UASB, EGSB, IC, SMPA, ABR, ASBR, LARAN can be adopted, have the following advantages compared with aerobic biological treatment process: first, to hazardous and noxious substances, there is larger tolerance, be applicable to the biochemical treatment of high density, difficult degradation organic nitrogen-containing waste water; The second, organic loading rate is higher, can reach 10-60kgCOD/m
3d; 3rd, produce surplus sludge volume few, and sludge settling performance and dewatering good; 4th, economical and efficient, floor space is little, and cost is low.
Device described in the utility model may be used for the nitrogenous effluent of the difficult degradations such as Treatment of Wastewater in Coking, pharmacy waste water, gourmet powder waste water, fermentation waste water, can also be applied to the process of sanitary sewage, municipal wastewater.
Claims (3)
1. one kind is applicable to the treatment unit of high density, difficult degradation organic nitrogen-containing waste water total nitrogen, it is characterized in that: comprise be connected in series successively by pipeline pre-anaerobic pond, the first settling tank, one-level anaerobic pond, one-level Aerobic Pond, the second settling tank, secondary anaerobic pond, secondary Aerobic Pond and the 3rd settling tank, the pipeline between the first settling tank and one-level anaerobic pond, between one-level anaerobic pond and one-level Aerobic Pond, between the second settling tank and secondary anaerobic pond, between secondary anaerobic pond and secondary Aerobic Pond is equipped with lift pump; First settling tank is connected with pre-anaerobic pond by sludge reflux pipeline, one-level Aerobic Pond is connected with one-level anaerobic pond by one-level return line, secondary Aerobic Pond is connected with secondary anaerobic pond by secondary return line, and the first settling tank is connected with the 3rd settling tank by blow-off line with the second settling tank; Heating and temperature controlling device and whipping appts is equipped with in described one-level anaerobic pond and secondary anaerobic pond, aerating apparatus is provided with in described one-level Aerobic Pond and secondary Aerobic Pond, aerating apparatus is connected with the aeration pump be located at outside Aerobic Pond by aerating pipelines, and described sludge reflux pipeline, one-level return line and secondary return line are equipped with reflux pump.
2. the treatment unit being applicable to high density, difficult degradation organic nitrogen-containing waste water total nitrogen according to claim 1, is characterized in that: on described aerating pipelines, spinner-type flowmeter is housed.
3. the treatment unit being applicable to high density, difficult degradation organic nitrogen-containing waste water total nitrogen according to claim 1, is characterized in that: be provided with water port on the top of described 3rd settling tank, be provided with mud discharging mouth in the bottom of the 3rd settling tank.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630388A (en) * | 2016-11-24 | 2017-05-10 | 天津市环境保护科学研究院 | Overall energy-saving method for industrial park sewage treatment |
| CN111204862A (en) * | 2020-01-14 | 2020-05-29 | 江苏宇益环保工程设备有限公司 | Biochemical treatment device for treating high organic nitrogen wastewater |
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2015
- 2015-02-13 CN CN201520105311.4U patent/CN204550197U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630388A (en) * | 2016-11-24 | 2017-05-10 | 天津市环境保护科学研究院 | Overall energy-saving method for industrial park sewage treatment |
| CN106630388B (en) * | 2016-11-24 | 2020-05-22 | 天津市环境保护科学研究院 | Integral energy-saving method for sewage treatment of industrial park |
| CN111204862A (en) * | 2020-01-14 | 2020-05-29 | 江苏宇益环保工程设备有限公司 | Biochemical treatment device for treating high organic nitrogen wastewater |
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