CN104176882B - A kind of inlet method and device improving artificial filtration system nitric efficiency - Google Patents

A kind of inlet method and device improving artificial filtration system nitric efficiency Download PDF

Info

Publication number
CN104176882B
CN104176882B CN201410393265.2A CN201410393265A CN104176882B CN 104176882 B CN104176882 B CN 104176882B CN 201410393265 A CN201410393265 A CN 201410393265A CN 104176882 B CN104176882 B CN 104176882B
Authority
CN
China
Prior art keywords
water
layer
settling tank
soon
sump pump
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.)
Active
Application number
CN201410393265.2A
Other languages
Chinese (zh)
Other versions
CN104176882A (en
Inventor
方涛
鲍少攀
汪贵和
唐巍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Hydrobiology of CAS
Original Assignee
Institute of Hydrobiology of CAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Institute of Hydrobiology of CAS filed Critical Institute of Hydrobiology of CAS
Priority to CN201410393265.2A priority Critical patent/CN104176882B/en
Publication of CN104176882A publication Critical patent/CN104176882A/en
Application granted granted Critical
Publication of CN104176882B publication Critical patent/CN104176882B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a kind of inlet method and the device that improve artificial filtration system nitric efficiency, its step: A, raw waste water are collected and pre-treatment: the raw waste water in ejectment irrigation canals and ditches is extracted by the controlling valve and sump pump that are connected settling tank and enters settling tank, and raw waste water removes wherein suspended substance and silt in settling tank; B, water level promoting: in settling tank, water extraction is risen to header tank by sump pump by pretreated raw waste water; C, advanced treatment: header tank controls after water outlet through controlling valve, and pretreated water, oozing pond packing layer soon, reaches sewage disposal.Settling tank is connected with ejectment irrigation canals and ditches with controlling valve by the sump pump on pipeline, sump pump is connected with settling tank, and water outlet is connected with header tank through sump pump, and header tank is connected with inlet channel, inlet channel by the controlling valve on pipeline with ooze pond soon and be connected, perforation water distributor is connected with outlet conduit.Ensure that the removal of CRI system to nitrogen, phosphorus and COD.Structure is simple, easy to use, can realize the high-efficient purification to sewage.

Description

A kind of inlet method and device improving artificial filtration system nitric efficiency
Technical field
The present invention relates to the technical field utilizing artificial rapid infiltration system to remove nitrogen in sewage, more specifically relate to a kind of inlet method improving artificial rapid infiltration system nitric efficiency, also relate to a kind of device improving the water inlet of artificial rapid infiltration system nitric efficiency, it is applicable to the sanitary sewage processing China's major part rural area, samll cities and towns.
Background technology
Along with the fast development of economy and mankind's activity strengthen day by day, the various pollutant emissions such as increasing trade effluent, sanitary sewage, domestic refuse and agricultural chemicals, in natural water, create pollution in various degree to water resources.People are while pursuit economic interests, society constantly increases the demand of water, but China resident environmental consciousness is weak, and quantity of precipitation differences between the south and the north are large, the factors such as water use efficiency is low constantly aggravate the nervous situation of China's water resources supply and demand, cause China's water resources problems also to diversified development, point source and pollution of area source problem outstanding day by day, sudden water pollution event takes place frequently, hydro-ecological safety is on the hazard, water problems superposition and cumulative effect more and more serious etc.
Implement innoxious, the resource utilization of sewage disposal, treatment and utilization combines, manual handling with naturally process the technology walked abreast, be meet the existing national conditions of China completely.Specifically, the big city sanitary sewage water yield is large, sewage complicated component, and its municipal ability to shoulder economically is strong, should based on manual handling, and implementation focuses on; And the sanitary sewage in small and medium-sized cities, cities and towns, rural area, composition is simple, should implement innoxious, the resource utilization sewage disposal policy based on technology such as land treatment systems.Can predict, sewage disposal is innoxious, the enforcement of resource utilization, on the one hand, the water resources quantity making China limited is greatly increased; On the other hand, it is purified making our water surrounding, and then realizes the strategic objective of resource, economy, environment, social overall sustainable sexual development.
The advantages such as artificial rapid infiltration system (CRI system) is as the one of land treatment system, and have and do not limit by region landform, floor space is little, and investment cost is low, and processing load is high.Therefore, be necessary that further investigation makes it to become ripe, economical, wastewater land treatment process efficiently, administer for China's small town sewage and polluted river water and sewage recycling contributes.Artificial rapid infiltration system is as the emerging technique of one, the impact for the treatment of effect is familiar with still not enough about environmental factors and operating parameter at present, the cutting mechanisms research of its pollutent is also insufficient, and these all can cause disadvantageous effect to the steady running of CRI system in Practical Project.
Therefore, in the carrying out practically parameter, actual operating efficiency etc. of CRI system, many parts to be modified are also had.The research of current optimization CRI system processing efficiency is mainly from the selection of adsorption medium and the design of CRI structure, and the research affected CRI system processing efficiency about inlet method is less.According to the research before us, adopt the segmental influent method being different from traditional inlet method, effectively can improve CRI system nitric efficiency (see environmental engineering journal, Wang Guihe, Fang Tao etc. " segmental influent method is on the impact of manual controlled infusion nitric efficiency ").But there is the lower shortcoming of hydraulic load in segmental influent method, and owing to oozing the difference of pond different layers microenvironment soon, for different water water quality, need to choose suitable segmental influent position and water inlet ratio, the clearance of CRI system to nitrogen can be improved, this adds increased the workload in actual moving process.
In the present invention, applicant proposed a kind of inlet method and the device that improve CRI system nitric efficiency.
Summary of the invention
The object of the invention is to there are provided a kind of inlet method improving artificial rapid infiltration system nitric efficiency, artificial rapid infiltration system nitric efficiency can be improved.Be different from conventional downstream stream inlet method, namely sewage passes through filtration media, a kind of up stream inlet method involved in the present invention, is adopt bottom to intake in CRI system, the mode of top layer water outlet.Adopt up stream inlet method, CRI system is to the clearance of ammonia nitrogen and total nitrogen apparently higher than conventional inlet method, and along with the increase of influent load, the clearance of ammonia nitrogen and total nitrogen also increases gradually.CRI system convention inlet method has higher clearance to total phosphorus, COD etc., but the clearance of nitrogen is lower.The up stream proposed water inlet is combined with traditional downstream, easy to implement the method, easy and simple to handle, ensure that the removal of CRI system to nitrogen, phosphorus and COD.
Another object of the present invention there are provided a kind of water feed apparatus improving artificial rapid infiltration system nitric efficiency, and this plant area area is little, cheap, and structure is simple, easy to use, can realize the high-efficient purification to sewage.
Improve an inlet method for artificial filtration system nitric efficiency, the steps include:
(1) raw waste water is collected and pre-treatment: the raw waste water in ejectment irrigation canals and ditches is extracted by the controlling valve and sump pump that are connected settling tank and enters settling tank, raw waste water can remove wherein suspended substance and silt in settling tank, simultaneously pleuston surface attachment microorganism and itself is to the absorption of nutritive salt, part that can be removed N, P, BOD and COD;
(2) water level promoting: water extraction is risen to header tank by sump pump by pretreated raw waste water in settling tank, the water be stored in header tank directly can enter under gravity through controlling valve when needed and ooze pond soon.
(3) advanced treatment: header tank controls after water outlet through controlling valve, enter inlet channel, perforated water distributor water distribution uniformity again, oozing pond packing layer soon, (filler divides five layers to pretreated water, top layer is the natural river sand of particle diameter 1.5-2mm, the second layer is particle diameter 2-4mm natural river sand, third layer is the pebbles of particle diameter 20-100mm, 4th layer is the coarse sand of particle diameter 4-8mm, layer 5 is in the pebbles of particle diameter 20-100mm) from bottom to top layer diafiltration, and finally enter outlet conduit by top layer water outlet, and again the water after process is entered ejectment irrigation canals and ditches, reach the effect to advanced treatment of wastewater.
A kind of water feed apparatus improving artificial rapid infiltration system nitric efficiency: this device comprises settling tank, header tank, oozes pond, controlling valve, ejectment irrigation canals and ditches, raw waste water, sump pump, inlet channel, perforation water distributor, outlet conduit soon, (top layer is the natural river sand of particle diameter 1.5-2mm to filler, the second layer is particle diameter 2-4mm natural river sand, third layer is the pebbles of particle diameter 20-100mm, 4th layer is the coarse sand of particle diameter 4-8mm, and layer 5 is the pebbles of particle diameter 20-100mm).It is characterized in that: settling tank is connected with ejectment irrigation canals and ditches with controlling valve by the sump pump on pipeline, ejectment irrigation canals and ditches enter the water yield of settling tank by controlling valve regulation and control raw waste water, and be connected with settling tank through sump pump, raw waste water is after settling tank precipitation, water outlet is connected with header tank through sump pump, water lift is to header tank, header tank is connected with inlet channel, and header tank water outlet controls through controlling valve the water yield entering inlet channel, and through inlet channel with ooze pond soon and be connected, inlet channel with ooze bottom, pond water distributor of boring a hole soon and be connected, perforation water distributor distributes the water to and oozes in pond soon, stop after 1 day, ejectment irrigation canals and ditches are directly entered through outlet conduit.
Oozing pond is soon be highly 2m, length and width are the cement pit of 1m, wherein be filled with adsorption stuffing, the degree of depth of filler is that 1.7m(packing layer divides five layers from top to bottom: it is the natural river sand of 1.5-2mm that 400mm particle diameter is filled on upper strata, it is 2-4mm natural river sand that the second layer fills 500mm particle diameter, it is the pebbles of 20-100mm that third layer fills 100mm particle diameter, 4th layer is filled 400mm particle diameter is the coarse sand of 4-8mm, it is the pebbles of 20-100mm that layer 5 fills 300mm particle diameter), and be provided with perforation water distributor oozing pond different depths (bottom 1.7m and 0.2m depths, top layer) soon, and be connected with header tank by inlet channel.During concrete enforcement, when adopting up stream inlet method, close the perforation water distributor of 0.2m depths, top layer, sewage enters the perforation water distributor of bottom 1.7m depths through inlet channel, sewage after water distribution uniformity processes from packing layer bottom to top layer diafiltration, and the water after process is discharged from top layer 0.2m and entered outlet conduit; When needs contrast conventional inlet method, close the perforation water distributor of bottom 1.7m depths, sewage enters the perforation water distributor of 0.2m depths, top layer through inlet channel, sewage after water distribution uniformity infilters row relax from packing layer top layer to bottom, and the water after process is discharged from bottom 1.7m and entered outlet conduit.
A kind of concrete building process improving the water feed apparatus of artificial rapid infiltration system nitric efficiency is as follows:
(1) structure of artificial rapid infiltration system, sanitary sewage is through settling tank, header tank and ooze pond precipitation soon;
(2) ooze the layout of pond water inlet, outlet conduit in artificial rapid infiltration system soon, oozing top layer, pond soon and water-in and water-out pipeline laid by bottom, wherein inlet channel is porous water distributor.
(3) ooze pond filtration media screening soon, typical media filler comprises gac, natural zeolite, biological ceramic particle, slag, coarse sand (particle diameter is 4-8mm).
(4) utilize common sanitary sewage by after oozing pond success biofilm soon, optimize artificial rapid infiltration system operating parameter, comprise wet-dry ratio (wet/dry=4:1-1:4), filter layer thickness (1-2m), hydraulic load (0.5-5m/d) etc.
(5) CRI system adopts traditional inlet method and up stream inlet method respectively, contrasts two kinds of inlet methods to the impact of artificial rapid infiltration system nitric efficiency.
(6) water inlet is being oozed after pond stops 1 day soon, point gets into water and water outlet water sample, total nitrogen and ammonia-nitrogen content in test water sample, and calculates clearance, obtains more excellent inlet method according to clearance height.
TN: alkaline chitinase oxidation-ultraviolet spectrophotometry; NH 3-N: reagent colorimetric method;
Clearance=(influent quality-effluent quality)/influent quality × 100%.
The present invention compared with prior art, has the following advantages and effect:
The present invention can improve artificial rapid infiltration system nitric efficiency effectively, thus administer and make larger contribution for rural area, samll cities and towns polluted water bodies, also thinking and reference is provided for improving artificial rapid infiltration system treatment effect further, meanwhile, up stream inlet method involved in the present invention has the following advantages:
(1) CRI system adopts the inlet method of up stream to inherit the advantage of CRI system under traditional inlet method, the advantages such as if do not limited by region landform, floor space is little, and investment cost is low, processing load height.
(2) take the inlet method of up stream to be conducive to sewage evenly be full of pond body and fully contact with filler, be conducive to a certain extent guaranteeing the stable of effluent quality, the convection current with air is conducive in addition from the top layer water outlet of CRI system, thus increase the ratio of oxygen exchange, ensure in water outlet containing certain density oxygen.
(3) suit measures to local conditions, in-situ immobilization can be carried out having near the river course of sewage discharge, not cause secondary pollution, require low to sewage disinfection treatment.
(4) owing to oozing top layer, pond soon more easily and atmosphere, reoxygenation process more easily occurs, thus ensures that oozing top layer, pond soon contains certain density oxygen, is conducive to the carrying out of nitrification, improves the clearance of ammonia nitrogen, estimates that the clearance of ammonia nitrogen can reach more than 70%.
Accompanying drawing explanation
Fig. 1 is a kind of schematic flow sheet improving the inlet method of artificial filtration system nitric efficiency.
Raw waste water 1 is promoted to after settling tank A leaves standstill 24h through sump pump 2 and is again promoted to header tank B, and pretreating sewage flows into from header tank B along pipeline and oozes pond C soon, through oozing pond C process water outlet after 1 day soon.
Fig. 2 is that one oozes pond C-structure schematic diagram soon.
The degree of depth of oozing pond C filler in this embodiment in CRI system is soon that 1.7m(packing layer divides five layers from top to bottom: it is the natural river sand of 1.5-2mm that 400mm particle diameter is filled on upper strata, it is 2-4mm natural river sand that the second layer fills 500mm particle diameter, it is the pebbles of 20-100mm that third layer fills 100mm particle diameter, 4th layer is filled 400mm particle diameter is the coarse sand of 4-8mm, and it is the pebbles of 20-100mm that layer 5 fills 300mm particle diameter.)
Fig. 3 is a kind of artificial main treatment unit schematic diagram of filtration system.
Comprising settling tank A, header tank B, oozes pond C soon, controlling valve D, ejectment irrigation canals and ditches E, controlling valve F, raw waste water 1, sump pump 2, sump pump 3, inlet channel, 4, perforation water distributor 5, outlet conduit 6, filler 7(top layer is the natural river sand of particle diameter 1.5-2mm, and the second layer is particle diameter 2-4mm natural river sand, third layer is the pebbles of particle diameter 20-100mm, and the 4th layer is the coarse sand of particle diameter 4-8mm, and layer 5 is the pebbles of particle diameter 20-100mm).Its annexation is: ejectment irrigation canals and ditches E regulates and controls by controlling valve D the water yield that raw waste water 1 enters settling tank A, and be connected with settling tank A through sump pump 2, raw waste water 1 is after settling tank A precipitates, water outlet is connected with header tank B through sump pump 3, water lift is to header tank B, header tank B is connected with inlet channel 4, and header tank B water outlet controls through controlling valve F the water yield entering inlet channel 4, and through inlet channel 4 with ooze pond C soon and be connected, inlet channel 4 with ooze C bottom, pond water distributor 5 of boring a hole soon and be connected, perforation water distributor 5 distributes the water to and oozes in the C of pond soon, stop after 1 day, ejectment irrigation canals and ditches E is directly entered through outlet conduit 6.
Embodiment
After now specific embodiments of the invention being discussed in.
Embodiment 1:
According to Fig. 1, a kind of inlet method improving artificial filtration system nitric efficiency, the steps include:
(1) raw waste water is collected and pre-treatment: the raw waste water 1 in ejectment irrigation canals and ditches E is extracted by the controlling valve D and sump pump 2 that are connected settling tank A and enters settling tank A; Raw waste water 1 can remove wherein suspended substance and silt in settling tank A, simultaneously pleuston surface attachment microorganism and itself is to the absorption of nutritive salt, part that can be removed N, P, BOD and COD;
(2) water level promoting: water extraction is risen to header tank B by sump pump 3 by pretreated raw waste water 1 in settling tank A, the water be stored in header tank B directly can enter under gravity through controlling valve F when needed and ooze pond C soon.
(3) advanced treatment: header tank B controls after water outlet through controlling valve F, enter inlet channel 4, perforated water distributor 5 water distribution uniformity again, (1.7m is dark altogether for filler 7 oozing pond C packing layer soon for pretreated water, divide five layers from top to bottom, top layer is the natural river sand of particle diameter 1.5-2mm, the second layer is particle diameter 2-4mm natural river sand, third layer is the pebbles of particle diameter 20-100mm, 4th layer is the coarse sand of particle diameter 4-8mm, layer 5 is in the pebbles of particle diameter 20-100mm) from bottom to top layer diafiltration, and finally enter outlet conduit 6 by top layer water outlet, and again the water after process is entered ejectment irrigation canals and ditches E, reach the effect to advanced treatment of wastewater.
Embodiment 2:
According to Fig. 2, Fig. 3, a kind of water feed apparatus improving artificial rapid infiltration system nitric efficiency: it comprises settling tank A, header tank B, ooze pond C soon, controlling valve D, ejectment irrigation canals and ditches E, controlling valve F, raw waste water 1, sump pump 2, sump pump 3, inlet channel 4, perforation water distributor 5, outlet conduit 6, filler 7(top layer is the natural river sand of particle diameter 1.5-2mm, the second layer is particle diameter 2-4mm natural river sand, third layer is the pebbles of particle diameter 20-100mm, and the 4th layer is the coarse sand of particle diameter 4-8mm, and layer 5 is the pebbles of particle diameter 20-100mm).It is characterized in that: settling tank A is connected with ejectment irrigation canals and ditches E with controlling valve D by the sump pump 2 on pipeline, ejectment irrigation canals and ditches E regulates and controls by controlling valve D the water yield that raw waste water 1 enters settling tank A, and be connected with settling tank A through sump pump 2, raw waste water 1 is after settling tank A precipitates, water outlet is connected with header tank B through sump pump 3, water lift is to header tank B, header tank B is connected with inlet channel 4, and header tank B water outlet controls through controlling valve F the water yield entering inlet channel 4, inlet channel 4 by the controlling valve F on pipeline with ooze pond C soon and be connected, inlet channel 4 with ooze C bottom, pond water distributor 5 of boring a hole soon and be connected, perforation water distributor 5 is connected with outlet conduit 6, perforation water distributor 5 distributes the water to and oozes in the C of pond soon, stop after 1 day, ejectment irrigation canals and ditches E is directly entered through outlet conduit 6.
Described header tank B is rectangular parallelepiped cement pit, is highly 6m, and length and width are 2m.Header tank can be used to store through pretreated sewage, and can directly rely on action of gravity to supply water to oozing pond soon.The header tank B depth of water maintains more than 4m to ensure enough to go out Water l oad.
Described perforation water distributor 5 is vertical three horizontal water tubes (being evenly distributed with the aperture that diameter is 2mm on water pipe) in bottom 1.7m depths, wherein a longitudinal tubule (L tubule) is connected with inlet channel 4, the same deep layer of top layer perforation water distributor 5 (bottom perforation water distributor 5 uses when up stream inlet method, and top layer perforation water distributor 5 uses when downstream inlet method).
Oozing pond C is soon be highly 2m, length and width are the cement pit of 1m, wherein be filled with adsorption stuffing 7, the degree of depth of filler 7 is that 1.7m(packing layer divides five layers from top to bottom: it is the natural river sand of 1.5-2mm that 400mm particle diameter is filled on upper strata, it is 2-4mm natural river sand that the second layer fills 500mm particle diameter, it is the pebbles of 20-100mm that third layer fills 100mm particle diameter, 4th layer is filled 400mm particle diameter is the coarse sand of 4-8mm, it is the pebbles of 20-100mm that layer 5 fills 300mm particle diameter), and ooze soon pond C different depths (bottom 1.7m and 0.2m depths, top layer) be provided with perforation water distributor 5, and be connected with header tank B by inlet channel 4.During concrete enforcement, when adopting up stream inlet method, close the perforation water distributor 5 of 0.2m depths, top layer, sewage enters the perforation water distributor 5 of bottom 1.7m depths through inlet channel 4, sewage after water distribution uniformity processes from packing layer bottom to top layer diafiltration, and the water after process is discharged from top layer 0.2m and entered outlet conduit 6; When needs contrast conventional inlet method, close the perforation water distributor 5 of bottom 1.7m depths, sewage enters the perforation water distributor 5 of 0.2m depths, top layer through inlet channel 4, sewage after water distribution uniformity infilters row relax from packing layer top layer to bottom, and the water after process is discharged from bottom 1.7m and entered outlet conduit 6.
A kind of concrete building process improving the water feed apparatus of artificial rapid infiltration system nitric efficiency is as follows:
(1) structure of artificial rapid infiltration system, raw waste water 1 is promoted to after settling tank A leaves standstill 24h through sump pump 2 and is again promoted to header tank B, and sewage flows into from header tank B along pipeline and oozes pond C soon.
The institute pilot scale settling tank A that builds is highly 2m, and length and width are respectively 4m and 3m, and the depth of water maintains 1-1.5m, and sewage stops 1 day wherein.
The header tank B that builds is rectangular parallelepiped, is highly 6m, and length and width are 2m, and the depth of water maintains more than 4m to ensure enough to go out Water l oad.
That built oozes pond C totally 7 single ponds (6 is standby with 1) soon, and be highly 2m, length and width are 1m, and wherein the filler degree of depth is 1.7m, filler totally 5 layers, is respectively natural river sand (fine sand), natural river sand (middle sand), pebbles, coarse sand, pebbles from top layer to bottom.Each layer thickness is respectively 0.4,0.5,0.1,0.4,0.3 meter from top to bottom.
(2) layout of pond C water inlet, outlet conduit 6 is oozed in artificial rapid infiltration system soon, inlet channel 4 is set oozing soon in the C of pond, bottom inlet method is adopted in the present invention, pretreated water is after header tank B flows out, entered by pipeline and ooze water-in bottom the C of pond soon, inlet channel 5 is vertical three horizontal porous vascellum ambulacrales, enter after oozing pond C soon and slowly upwards flood upper strata filler, finally be kept above filler 10cm, sewage is oozing after pond C stops 1 day soon, from outlet conduit 6 water outlet, outlet conduit 6 is arranged in the middle of surface materials, i.e. the dark 20cm place of top layer filler.
(3) pond C filtration media screening is oozed soon, typical media comprises gac, natural zeolite, biological ceramic particle, slag, coarse sand, in the embodiment of the present invention 1, the 4th layer of adsorption medium used is rough sand (particle diameter 4-8mm), and its porosity and water ratio are respectively 39.01%, 11.59%.
(4) utilize common sanitary sewage by after oozing pond biofilm soon, optimize artificial rapid infiltration system operating parameter, comprise wet-dry ratio (wet/dry=4:1-1:4), filter layer thickness (1-2m), hydraulic load (0.5-5m/d) etc.(environmental engineering journal, 2012, Fang Tao etc. on existing Research foundation, novel artificial rapid infiltration system process villages and small towns sewage process parameter optimizing), the present embodiment selects wet-dry ratio to be 1:2, and filter layer thickness is 1.7m, and hydraulic load is the operating parameter of 0.8-1.2m/d.Wherein contrasting pond adopts the optimum hydraulic load of conventional water inlet to be 1m/d.(see environmental engineering journal, Wang Guihe, Fang Tao etc. " segmental influent method is on the impact of manual controlled infusion nitric efficiency ")
(5) CRI system adopts traditional inlet method and up stream inlet method respectively, intakes and is oozing after pond C stops 1 day soon, point gets into water and water outlet water sample, and test water sample total nitrogen, ammonia nitrogen, calculate clearance, obtains more excellent inlet method according to clearance height.
TN: alkaline chitinase oxidation-ultraviolet spectrophotometry; NH 3-N: reagent colorimetric method;
Clearance=(influent quality-effluent quality)/influent quality × 100%.
(6) experimental result and analysis
Experiment establish 3 parallel, experimental result is expressed as mean number ± standard error (Mean ± SD), as shown in table 1 below.
To pollutants removal rate under the different influent load of table 1
Table 1 is that CRI system adopts up stream inlet method and conventional inlet method under different influent load to the clearance of pollutent.As seen from table, be all better than conventional inlet method by the clearance of inlet method to ammonia nitrogen and total nitrogen of up stream, and also increase gradually along with the increase ammonia nitrogen of influent load and the clearance of total nitrogen.Especially, in the removal of total nitrogen, under influent load is 1.2m/d, the clearance of the more conventional water inlet of up stream inlet method to total nitrogen is taked to improve 26.9%.
From the clearance of up stream inlet method CRI system under different influent load to ammonia nitrogen and total nitrogen, under up stream inlet method, suitably improve influent load be conducive to the removal of CRI system to nitrogen.
(7) net result
Above-mentioned experimental result shows, takes up stream inlet method, effectively can improve the nitric efficiency of CRI system to a certain extent.And the suitable influent load that improves is conducive to the removal of CRI system to nitrogen under up stream inlet method.Therefore adopt up stream inlet method and device in the present invention, can combine with CRI system convention inlet method and device, thus reach the synchronous removal to nitrogen, phosphorus and COD.The method is easy, easy and simple to handle, for the optimization of CRI system and improvement provide reference.

Claims (4)

1. improve an inlet method for artificial filtration system nitric efficiency, the steps include:
1) raw waste water is collected and pre-treatment: the raw waste water in ejectment irrigation canals and ditches (E) is extracted by the first controlling valve (D) and the first sump pump (2) that are connected settling tank (A) and enters settling tank (A), raw waste water (1) removes wherein suspended substance and silt in settling tank (A), simultaneously pleuston surface attachment microorganism and itself is to the absorption of nutritive salt, remove part N, P, BOD and COD;
2) water level promoting: water extraction is risen to header tank (B) by the second sump pump (3) by pretreated raw waste water (1) in settling tank (A), the water be stored in header tank (B) directly enters under gravity through the second controlling valve (F) and oozes pond (C) soon;
3) advanced treatment: header tank (B) is after the second controlling valve (F) controls water outlet, enter inlet channel (4), perforated water distributor (5) water distribution uniformity again, pretreated water is oozing pond (C) packing layer soon from bottom to top layer diafiltration, finally enter outlet conduit (6) by top layer water outlet, water after process is entered ejectment irrigation canals and ditches (E), reaches advanced treatment of wastewater.
2. one kind is improved the water feed apparatus of artificial rapid infiltration system nitric efficiency, it is characterized in that: it comprises settling tank (A), header tank (B), ooze pond (C) soon, first controlling valve (D), ejectment irrigation canals and ditches (E), second controlling valve (F), first sump pump (2), second sump pump (3), inlet channel (4), perforation water distributor (5), outlet conduit (6), filler (7), it is characterized in that: settling tank (A) is connected with ejectment irrigation canals and ditches (E) with the first controlling valve (D) by the first sump pump (2) on pipeline, first sump pump (2) is connected with settling tank (A), water outlet is connected with header tank (B) through the second sump pump (3), header tank (B) is connected with inlet channel (4), inlet channel (4) by the second controlling valve (F) on pipeline with ooze pond (C) soon and be connected, inlet channel (4) with ooze pond (C) bottom water distributor (5) of boring a hole soon and be connected, perforation water distributor (5) is connected with outlet conduit (6).
3. a kind of water feed apparatus improving artificial rapid infiltration system nitric efficiency according to claim 2, it is characterized in that: described pond (C) of oozing soon is be highly 2m, length and width are the cement pit of 1m, wherein be filled with adsorption stuffing (7), the degree of depth of filler (7) is 1.7m, packing layer divides five layers from top to bottom: it is the natural river sand of 1.5-2mm that 400mm particle diameter is filled on upper strata, it is 2-4mm natural river sand that the second layer fills 500mm particle diameter, it is the pebbles of 20-100mm that third layer fills 100mm particle diameter, 4th layer is filled 400mm particle diameter is the coarse sand of 4-8mm, it is the pebbles of 20-100mm that layer 5 fills 300mm particle diameter.
4. a kind of water feed apparatus improving artificial rapid infiltration system nitric efficiency according to claim 2, it is characterized in that: described perforation water distributor (5) bottom is vertical three horizontal water tubes, and wherein a longitudinal tubule (L tubule) is connected with inlet channel (4).
CN201410393265.2A 2014-08-12 2014-08-12 A kind of inlet method and device improving artificial filtration system nitric efficiency Active CN104176882B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410393265.2A CN104176882B (en) 2014-08-12 2014-08-12 A kind of inlet method and device improving artificial filtration system nitric efficiency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410393265.2A CN104176882B (en) 2014-08-12 2014-08-12 A kind of inlet method and device improving artificial filtration system nitric efficiency

Publications (2)

Publication Number Publication Date
CN104176882A CN104176882A (en) 2014-12-03
CN104176882B true CN104176882B (en) 2016-03-16

Family

ID=51958272

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410393265.2A Active CN104176882B (en) 2014-08-12 2014-08-12 A kind of inlet method and device improving artificial filtration system nitric efficiency

Country Status (1)

Country Link
CN (1) CN104176882B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104891745B (en) * 2015-06-11 2017-01-18 王舜和 Upgrading and reconstruction method based on constructed rapid infiltration sewage treatment facility

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101759298A (en) * 2009-12-17 2010-06-30 北京市水利科学研究所 Rapid manual land infiltration treatment system and method for purifying river water by applying the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101759298A (en) * 2009-12-17 2010-06-30 北京市水利科学研究所 Rapid manual land infiltration treatment system and method for purifying river water by applying the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"不同进水方式对人工快渗系统脱氮效率的影响";汪贵和;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;20121115;B027-205页 *

Also Published As

Publication number Publication date
CN104176882A (en) 2014-12-03

Similar Documents

Publication Publication Date Title
CN104098231B (en) A kind of immobilized microorganism artificial wet land system
CN102251459B (en) System for carrying out collection, purification and utilization on rainwater on road surfaces
CN104761057B (en) A kind of charcoal modularity composite vertical current artificial wetland system
CN202730934U (en) System for intercepting, shunting, regulating, storing and treating initial rainwater
CN202881048U (en) Multi-medium constructed wetland water treatment system
CN100537452C (en) Sewage treating artificial wet land method
CN101781060B (en) Composite artificial marsh sewage treatment system
CN101921042B (en) Alternate combined wetland system and method for efficiently removing nitrogen and phosphorus in urban wastewater
CN104085990B (en) A kind of auxiliary highway facilities sewage multimedium biological and ecological coprocessing system and method
CN203247146U (en) Ecological earthworm filtering pool with effective denitrification function
KR100967170B1 (en) Abf process
CN103819004B (en) Movable and combined subsurface constructed wetland processing method
CN106830506A (en) A kind of intensified denitrification and dephosphorization biology delaying basin for being applied to sponge urban construction
KR101163061B1 (en) Equipment and method for water and stream purification using layered soil system
CN1475448A (en) Fortified artificial wetlan sewage disposal method and system
CN101885565B (en) Hydraulic power oxygenation constructed wetland
CN103979736A (en) Artificial wetland device for denitrification of low-pollution water and treatment method thereof
Zhai et al. Experimental study of a novel hybrid constructed wetland for water reuse and its application in Southern China
KR101006170B1 (en) Treating facility for small river wate
CN100400438C (en) Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system
CN102358660A (en) Industrial mariculture efflux water recycling and utilization system based on constructed wetlands, and method thereof
CN103880193B (en) Build the method for vertical current constructed wetland processing breeding wastewater based on waterworks sludge
CN101172822A (en) Multi-medium stephanoporate water quality purifying permeable material
CN201952325U (en) Stepwise function-reinforced biological ecological oxidation pond
CN2898003Y (en) Landscape sewage ecological treating pool in residential estate

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant