CN104773918B - Gushed for river or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation and engineering method - Google Patents

Gushed for river or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation and engineering method Download PDF

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CN104773918B
CN104773918B CN201510156612.4A CN201510156612A CN104773918B CN 104773918 B CN104773918 B CN 104773918B CN 201510156612 A CN201510156612 A CN 201510156612A CN 104773918 B CN104773918 B CN 104773918B
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plant
unit
river
water
pool
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CN104773918A (en
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杨扬
陶然
王铭
李丽
乔永民
赵建成
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Jinan University
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Jinan University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/40Protecting water resources
    • Y02A20/402River restoration

Abstract

The invention discloses it is a kind of for river gush or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation and engineering method, utilize river natural, ecological nitration denitrification denitrogenation principle, the ecotechnology being whether there is by submerged plant builds the surface streaming system of varying environment condition, ensure that current are run in baffling mode by water conservancy diversion, by continuously without water plant area and submerged plant dense planting area series unit, water body is set fully to be contacted with submerged plant and substrate, continuous aerobic, anoxic or anaerobic unit are formed, is conducive to nitrogen continuous and fully carries out nitrification and denitrification process.Function division of the present invention is obvious, nitrogen purification efficiency is high, technical process is easily managed and controlled, small investment, operating cost are low, and ecotechnology has enhancing water environment concurrently while Effects of Water Quality is ensured and views and admires sexual function, it can be widely applied to the cities and towns river with certain flow rate and gush in the pollution of area source Ecological Disposal with rural pool.

Description

Gushed for river or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation and Engineering method
Technical field
The present invention relates to ecological engineering water treatment field, gushed more particularly, to a kind of for river or the nitrification in pool is anti- Nitrify the artificial deflector type ecosystem of denitrogenation and engineering method.
Background technology
Surface current artificial wetland is typically to be formed using improvements of low land such as atmospheric swamp, abandoned channels, with traditional sewage Treatment facility compares, with easy construction, and investment cost is relatively low, and the advantage such as is easily managed.Widely apply at present In processing life, aquaculture wastewater, accumulation and purification storm runoff, Control the Plan Pollution Sources recover and rebuild river, lake and marshland Deng.Under relatively long effective residence time, free water surface wetland has a certain degree of removal effect to each pollutant, wherein Nitrification is one of feature of surface stream strongly, and denitrification reacts relatively poor in free water surface wetland, this also shadow The whole structure that free water surface wetland is removed for nitrogen is rung.
Removal of the nitrogen in surface current artificial wetland mainly has volatilization, adsorption by soil and ion exchange, plant absorption, nitre Change the number of ways such as denitrification.The removal effect of first two approach is not notable, and the removal of plant absorption only accounts for gross mass 10% or so, and Surface Flow Constructed Wetlands must can just be left by harvest.Most nitrogen is by nitrification and anti-nitre Change effect successive reaction and remove, once the two continuous process can not be carried out effectively, total nitrogen removal effect just it is undesirable; More simple in conventional surface current artificial wetland's design, by setting water and periphery planting aquatic plants, nitrification is anti- It should be compared thoroughly, less the consideration waterpower method of operation and sectional design the influence brought to system denitrification, are The strong advantage of free water surface wetland denitrifying capacity is more fully played, the nitrification ability of strengthening system is anti-by nitrogen two It should organically be blended in system in stage, realize the optimization of total nitrogen removal effect, be the skill that focus in ecological engineering consider One of art means.
And in Conventional waste water processing, A/O techniques have been considered as the typical technology of biological denitrificaion, and it is removed according to nitrogen Processing procedure is divided into some modules by feature, improves removal efficiency.But due to there is factors system in conventional design operation About, quite a few A/O technique has operation high energy consumption issues, and the environmental condition required for every section denitrogenation is lacked and is directed to The research of property, it is relatively low to the treatment effeciency of nitrogen.
Accordingly, with reference to conventional surface artificial wetland and the mode and advantage of A/O handling process, with reference to the cloth of submerged plant Put and the current baffling method of operation, build a kind of cities and towns river being widely portable to certain flow rate gush, pool and landscape work Nitration denitrification denitrogenation ecological treatment system and engineering method in the exceeded water body of journey nitrogen concentration.
The content of the invention
The present invention the technical problem to be solved be to overcome existing conventional surface artificial wetland nitrogen removal efficiency low, with And based on traditional A/O technological designs there are problems that there is provided it is a kind of for river gush or pool nitration denitrification denitrogenation Ecotechnology system, the A/O processing modules of scientific offering different disposal condition are connected, current with level, flow by gravity or Surface overflow mode flows through whole system, and non-power consumption fully carries out nitrification and denitrification process beneficial to nitrogen, reduction energy consumption The treatment effeciency of nitrogen is improved simultaneously.
Another technical problem to be solved by the present invention is that provide it is a kind of for river gush or water-locking effect nitration denitrification take off The artificial deflector type ecotechnology of nitrogen.
The object of the invention is achieved by the following technical programs:
There is provided it is a kind of gushed for river or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation, including total water inlet With flat flow without plant surface stream unit, in addition to 1+2 × n unit, n is positive integer;The unit be respectively flat flow without Plant surface stream unit, descending streaming have plant surface stream unit without plant surface stream unit and up streaming;The unit leads to Cross it is in series it is described gushed for river or pool the nitration denitrification denitrogenation ecosystem;The mode of the series connection is 1 advection Formula is connected n without plant surface stream unit has plant surface stream unit by descending streaming without plant surface stream unit and up streaming The unit combination being composed in series;The total water inlet connects flat flow without plant surface stream unit, and total delivery port connection is most Up streaming in latter assembled unit has plant surface stream unit;The plant is submerged plant.
The flat flow is provided with high-order delivery port without plant surface stream unit, and the descending streaming is without plant surface stream list Member is provided with low level delivery port, and the up streaming has plant surface stream unit to be provided with high-order delivery port.
Preferably, the system also includes the routine such as sparge pipe, pipeline control valve, flowmeter, porous water distributor, water fender Design part, and setting barrier and gate valve at each water communication.
Preferably, the unit is designed with same depth of water and length-width ratio, and depth is no more than 1 m, and length-width ratio is 1:1.
Preferably, the plantation density of the submerged plant is 40g fw/m2
Preferably, the plant height of the submerged plant is 15~20 cm.
Preferably, the submerged plant is the one or more of eel grass or black algae.
It is further preferable that the up streaming has plant surface stream unit to introduce fish after plant grew well, formed Closed ecology chain.
It is further preferred that the fish are the one or more of grass carp or Tilapia mossambica.
Preferably, the n is 1,2 or 3.
Present invention simultaneously provides it is a kind of gushed for river or water-locking effect nitration denitrification denitrogenation ecotechnology, it is including following Step:
S1. build it is of the present invention for river gush or water-locking effect the nitration denitrification denitrogenation ecosystem;
S2. nitrogenous effluent is introduced from total water inlet, current are flowed through successively with level, flow by gravity or surface overflow mode 1+2 × n series unit, forms continuous aerobic/anaerobic process, completes nitrification/denitrification denitrogenation Ecological Disposal process, from total Delivery port flows out.
Further, it is described gushed for river or water-locking effect nitration denitrification denitrogenation ecotechnology, including following work Flow:After the water of purified treatment enters porous water distributor water distribution uniformity through distributing pipe line control valve, flowmeter, advection is initially entered Formula removes suspension in water removal without plant surface stream unit;Subsequently into follow-up descending streaming without plant surface stream unit, flat flow It is arranged at the unit top to form descending streaming without in plant surface stream unit without high-order delivery port in plant surface stream unit Descending streaming, make to obtain sufficient reoxygenation into water, beneficial to build aerobic zone carry out nitration reaction;Subsequently entering next has Submerged plant unit, descending streaming is arranged at the unit bottom without low level delivery port in plant surface stream unit, bottom water inlet with Forming up streaming has up streaming in plant surface stream unit, intakes in bottom and submerged plant rhizome tissue, soil table The anaerobic/anoxic area in face carries out denitrification process.In this way by 1+2 × n(n = 1、2、3……)Device is flowed with people in individual surface Work deflector type is connected, and sets at each water communication barrier and gate valve, in order to control and operational management.It is typically due to surface Streaming system area is big, and n is generally between 1~3, or with circular flow, reduces floor space;It is unsuitable that above-mentioned technique is primarily adapted for use in Dig deep placement work and without flood passage requirement river gush, pool landscape engineering.
Beneficial effects of the present invention:
The invention provides it is a kind of gushed for river, the nitration denitrification denitrogenation ecosystem of water-locking effect and engineering method, be based on The presence or absence of water plant is designed, and realizes artificial deflector type operation with reference to water conservancy diversion, corresponding nitrogen degradation process is carried out respectively:Without aquatic Plant unit, downflow system operation makes whole unit be full of oxygen as far as possible, mainly based on nitrification;There is water plant single Member, up flow type operation makes fully to contact with plant roots and stems tissue, wetland soil into water, and water plant plays interception function, general Grain organic matter resides in this, plant dense planting and microbial association effect, forms anaerobic/anoxic region and carries out denitrification process. Current flow through system with parallel, flow by gravity or surface overflow mode, reduce power consumption by water conservancy diversion.According to processing mesh The water quality condition of water body is marked, the submerged plants such as plantation eel grass, black algae is determined in upstream element, oxygen and water is put by plant photosynthesis The method of operation is flowed, further strengthens the water body oxygen content of next stage aerobic zone.Fish are introduced after plant grew well(Such as grass Fish, Tilapia mossambica etc.), phytomass is controlled, closed ecology chain is formed, the ecological balance of internal system is maintained, reinforcing nitrification is anti- The denitrification effect of nitrification.The present invention is further optimized to the design parameter of surface current artificial wetland, and specific aim creates denitrogenation Required segmented environmental condition, realizes the artificial deflector type of current or natural flat flow operation with reference to water conservancy diversion, makes abundant into water Contacted with water plant and substrate soil, complete a series of nitration denitrification processes of nitrogen.
The present invention has that function division is obvious, Pollutant-degrading gene is high, and technical process is easily managed and controlled, investment Less, operating cost is low, the features such as being easy to be widely applied.
Brief description of the drawings
Fig. 1 is the total profile of present system.
In figure:1-total water inlet(End), 2-total delivery port(It is disconnected), 3-substrate, 4-submerged plant, 5-water fender, 6-high-order delivery port, 7-low level delivery port, 8-flat flow are without plant surface stream unit, 9-descending streaming without plant surface stream Unit, 10-up streaming have plant surface stream unit.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples, unless stated otherwise, the original that the present invention is used Material and equipment are the conventional raw material of the art and equipment.
Embodiment:
S1. build 1+2 × 2 be used for river gush or water-locking effect the nitration denitrification denitrogenation ecosystem, such as the institute of accompanying drawing 1 Show, including 1 set of flat flow has without 8,2 sets of descending streamings of plant surface stream unit without the up streaming of connecting of plant surface stream unit 9 The unit combination of plant surface stream unit 10.Each surface stream unit is designed with same depth of water and length-width ratio, and wherein length-width ratio is 1: 1, length is set to 50 cm by the present embodiment with wide.
Gather massif topsoil(5~20 cm), impurity removing is removed, 100 mesh sieves are crossed after air-dried, grinding, as device bed mud 3(10 cm are thick).Its full nitrogen and content of tatal phosphorus are respectively 0.33 ± 0.04 and 0.14 ± 0.01 g/Kg dw.
Eel grass(Vallisneria natans)Belong to the perennial submerged plant of Hydrocharctaceae Vallisneria, selection plant height is 15 ~ 20 Cm eel grass seedling, cuttage is into bed mud;Plantation density is 40 g fw/m2, play eel grass stronger soil pick-up ability and resistant Property, preferably as the selection kind of the submerged plant 4 of present system.
S2. the present embodiment configures simulated domestic wastewater mother liquor, and its formula is as follows(mg/L):107.1 C6H5COONa、204.9 CH3COONa、176.1 NH4NO3、36.7 K2HPO4·3H2O、7.0 NaCl、3.4 MgCl2·6H2O、4.0 CaCl2· 2H2O.Say that mother liquor is diluted to TN, NH with pure water4 +-N、NO3 -- N and PO4 3-- P concentration is respectively:4.5±1.4、1.6±0.6、 3.1 ± 0.9 and 0.4 ± 0.1 mg/L, simulates domestic sewage in rural areas average level.With hydraulic load(HLR)For 0.07 m/d bars Continuously run under part.
Simulated domestic wastewater mother liquor is through distributing pipe line control valve(Do not indicated in figure), flowmeter(Do not indicated in figure)Into many After the water distributor water distribution uniformity of hole, no plant unit 8 is initially entered, suspension in water removal is removed;Subsequently into subsequently without plant unit 9, high-order delivery port 6 is arranged at the top of unit 8 to form the descending streaming in unit 9 in unit 8, makes to obtain sufficiently multiple into water Oxygen, nitration reaction is carried out beneficial to aerobic zone is built;Subsequently entering next has low level in submerged plant unit 10, unit 9 to go out The mouth of a river 7 is arranged at the bottom of unit 9, bottom water inlet to form the up streaming in unit 10, water inlet the bottom of unit 10 with Submerged plant rhizome tissue, the anaerobic/anoxic area of soil surface carry out denitrification process.By present system, build and be adapted to The A/O techniques that nitrogen is removed, by the baffling method of operation of current, when current flow through different units, in descending streaming without plant Unit, by line mode under current there is provided sufficient oxygen, beneficial to the progress of nitration reaction;Current have plant by up streaming During thing unit, the upstream method of operation to carry out anti-nitration reaction in the environment for maintaining anoxic in unit, water flow process.Through surveying Fixed, dissolved oxygen is gradually increasing to wet land system in general, and water side is promoted to by 4.7 ± 2.1 mg/L of water inlet end 8.0 ± 4.1 mg/L, have been obviously improved the dissolved oxygen content of water body.Meanwhile, the system effectively reduces Water and contained Amount, the average removal efficiency of TN is 48.9%.Wherein, flat flow is 13.33% without plant surface stream unit TN clearances;Descending streaming Without plant surface stream unit to NH4 +- N clearances are 33.33%, and strong nitration reaction causes NO3 -- N clearances for- 14.29%;Up streaming has plant surface stream unit mainly to occur denitrification process, NO3 -- N clearances are 37.50%, and NH4 +- N clearances are 10.10%;The descending streaming then connected has plant surface stream unit without plant surface stream unit and up streaming Occurs nitrification and denitrification process successively again, series unit adds up to the TN except 35.57%.

Claims (9)

1. it is a kind of gushed for river or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation, including total water inlet and always go out The mouth of a river, it is characterised in that also including 1+2 × n unit, n is positive integer;The unit be respectively flat flow without plant unit, Descending streaming has plant unit without plant unit and up streaming;The unit described is gushed or pool by series for river The nitration denitrification denitrogenation ecosystem;The mode of the series connection is that 1 flat flow is individual by descending streaming without plant unit series connection n There is the unit combination that plant unit is composed in series without plant unit and up streaming;The total water inlet connects flat flow without plant Unit, the up streaming that total delivery port is connected in last assembled unit has plant unit;The plant is that heavy water is planted Thing;The up streaming has plant unit to introduce fish after plant grew well, forms closed ecology chain;
The unit is designed with same depth of water and length-width ratio, and depth is no more than 0.5 m, and length-width ratio is 1:1.
2. be used for according to claim 1 river gush or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation, it is special Levy and be, the plantation density of the submerged plant is 40g fw/m2
3. be used for according to claim 1 river gush or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation, it is special Levy and be, the plant height of the submerged plant is 15~20 cm.
4. according to claim 1,2 or 3 be used for river gush or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation, Characterized in that, the submerged plant is the one or two of eel grass or black algae.
5. according to claim 1 be used for river gush or water-locking effect the artificial deflector type ecotechnology of nitration denitrification denitrogenation, Characterized in that, the fish are the one or more of grass carp or Tilapia mossambica.
6. be used for according to claim 1 river gush or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation, it is special Levy and be, the n is 1,2 or 3.
7. it is a kind of for river gush or water-locking effect the artificial deflector type ecotechnology of nitration denitrification denitrogenation, it is characterised in that bag Include following steps:
S1. the system described in any one of claim 1 to 6 is built;
S2. nitrogenous effluent is introduced from total water inlet, current flow through 1+2 × n successively with flow by gravity or surface overflow mode Series unit, forms continuous aerobic/anaerobic process, nitrification/denitrification denitrogenation Ecological Disposal process is completed, from total delivery port stream Go out.
CN201510156612.4A 2015-04-03 2015-04-03 Gushed for river or pool the artificial deflector type ecosystem of nitration denitrification denitrogenation and engineering method Active CN104773918B (en)

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* Cited by examiner, † Cited by third party
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US6447682B1 (en) * 2001-07-03 2002-09-10 David A. Flowers Process and system for enhanced nitrogen removal in a wetland wastewater treatment facility
KR100477367B1 (en) * 2003-04-22 2005-03-22 백순기 sewage and waste water treating system by ceramics and method for purifying sewage and waste water using the same
KR100648794B1 (en) * 2004-09-24 2006-11-23 주식회사 케이.씨 리버텍 The Method and Device to Treat Rivers and Lakes through the Combination of Upflow Contact/Filtration Facility and Artificial Wetland with Rolls/Mats to Grow Vegetation
CN100371269C (en) * 2006-06-30 2008-02-27 南京大学 Method and installation for treating domestic sewage by using artificial wetland
CN102515413B (en) * 2011-11-18 2013-05-01 华南农业大学 Sewage treatment system and treatment method of composite horizontal undercurrent constructed wetland
CN202766358U (en) * 2012-07-23 2013-03-06 复旦大学 Reinforced constructed wetland device for deep wastewater treatment
CN103319050B (en) * 2013-07-04 2014-09-10 李敬生 Ecological safety purifying method for sewage of rivers and channels
CN103304111A (en) * 2013-07-11 2013-09-18 武汉大学 Water network hill area village sewage collection treatment system

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