CN202658011U - Double-layer potential flow constructed wetland system for sewage treatment of medium and small towns of cold regions - Google Patents
Double-layer potential flow constructed wetland system for sewage treatment of medium and small towns of cold regions Download PDFInfo
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- CN202658011U CN202658011U CN2012201167889U CN201220116788U CN202658011U CN 202658011 U CN202658011 U CN 202658011U CN 2012201167889 U CN2012201167889 U CN 2012201167889U CN 201220116788 U CN201220116788 U CN 201220116788U CN 202658011 U CN202658011 U CN 202658011U
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- Y—GENERAL 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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model discloses a double-layer potential flow constructed wetland system for sewage treatment of medium and small towns of cold regions, which belongs to the sewage treatment engineering field, and comprises a water distribution regulation pool, a water outlet collecting pool, an upper layer wetland, a lower layer wetland, a water distribution pipe and a treated water outlet collecting pipe, wherein the water distribution regulation pool is arranged on one side of a pool body, the water outlet collecting pool is arranged on the other side of the pool body, the upper layer wetland and the lower layer wetland are arranged in the pool body, and the water distribution pipe supplies water for the upper and the lower layer wetlands. The upper layer wetland and the lower layer wetland are potential flow type constructed wetlands, and are separated by a waterproof interlayer, compound packing of ceramsite and cinder is filled in the lower portion of the upper layer wetland, compound packing of the ceramsite, the cinder and soil is filled in the upper portion of the upper layer wetland, aquatic plants are planted on the surface of the compound packing of the ceramsite, the cinder and the soil, and compound packing of gravel and volcanic rocks is filled in the lower layer wetland. The double-layer potential flow constructed wetland system for sewage treatment of medium and small towns of cold regions guarantees to steadily run yearly in frozen periods of northeast cold areas by running an upper layer constructed wetland in the summer and running a lower layer constructed wetland in the winter, is low in investment running cost, enables outlet water to meet level 1 B standard of GB18918-2002, and is particularly suitable for dispersing type sewage treatment engineering in small towns of cold regions with weak economic foundation.
Description
Technical field
The utility model relates to treatment system and the using method of one way of life sewage, belongs to the sewage treatment project field.
Background technology
Process sanitary sewage with artificial wet land system and obtained in recent years fast development.Artificial wet land system is an intact ecocystem, mainly is made of each integral part synergy four fundamentals such as matrix, vegetation, microorganism, water bodys.Cleaning principle is artificial swamp combines biology, physics, chemical three aspects: in the treating processes to waste water effect, and the picked-up by matrix filtration, absorption, precipitation, ion-exchange, complex reaction, nitrification and denitrification effect, Plant To Nutrient element and microorganism such as decompose at the high-efficient purification of realizing sewage.Have a large amount of microorganisms in wet land filler surface and the root system of plant, form microbial film, wastewater streams is when wetland, and suspended substance is stopped by filler and root system to be held back, and organic matter is removed by biomembranous absorption and assimilation, dissimilation.Discharge because of the transmission of root system of plant to oxygen in the wet land system, make and present successively aerobic, anoxic and anaerobic state in the microenvironment around it, guaranteed that the nitrogen in the waste water, phosphorus can not only directly be absorbed as nutritive ingredient by plant and microorganism, can also remove from waste water the summation of phosphorus by nitrated, denitrification and microorganism, periodic replacement or the plant harvesting by Wetland Substrate finally removed pollution substance from system at last.
Chinese patent ZL200910244242.4 discloses " a kind of double-layer artificial wetland system of strengthening sewage denitrification and dephosphorization and working method thereof ", comprise the upper strata wetland that places body inside, pond, lower floor's wetland, provide water inlet water distribution system and effluent collection system into water for upper strata wetland and lower floor's wetland, be filled with the mineral filler of zeolite, Wingdale etc. in the wetland of upper strata, be filled with the many-sided ball biologic packing material of the materials such as polyethylene, polypropylene, Reinforced Polypropylene, polyvinyl chloride, chlorinated polyvinyl chloride, polyvinylidene difluoride (PVDF) in lower floor's wetland.Upper strata sewage water inlet evenly drops into the upper strata of upper strata wetland by the aperture in the upper strata water distribution NASA, sewage through drop oxygenation vertically infiltrates the mineral filler district, absorption by filler, the effect such as microbiological deterioration and plant absorbing, effectively remove suspended substance, organism, ammonia nitrogen, the pollutents such as phosphorus, after lower floor's water distribution overflows from the water distributor in the pebbles fill area of middle level, be mixed with the upper strata water outlet, evenly flow into lower floor biologic packing material district, the main nitric nitrogen of removing, the water after final the processing is collected and is imported outfall sewer through the effluent collection pipe of lower floor wetland bottom and discharges.Present method adopts double-deck vertical-flow wetland to move simultaneously and disposes of sewage, the sewage upper strata aerobic zone of flowing through first enters lower floor's anaerobic zone again, strengthened the Nitrogen/Phosphorus Removal of sewage, the advanced treatment that is suitable for the nitrogen and phosphorus pollutants of common sanitary sewage, but there is not the design of resist freezing structure in this technique, generally can only be used for the sewage disposal of southern area or northern area non-ice period, and the town sewage of China's Northeast Heavy Frigid Region of China is processed the long characteristics of freezeup period that exist, traditional artificial swamp exists and freezes phenomenon winter, and prior art all can't satisfy these regional winter operation requirements at present.
Summary of the invention
The utility model purpose be a kind of less investment of exploitation, management easily, be applicable to the particularly sewage disposal artificial wet land system of Northeast Heavy Frigid Region of China whole year operation of cold district.
For realizing above-mentioned utility model purpose, the technical solution of the utility model is: a kind of double-deck subsurface flow constructed wetland system for the sewage disposal of cold district Small Urban, the water distributor that the water outlet that comprises water distribution equalizing tank, the pond body opposite side of pond body one side integrates the upper strata wetland of joint pond, body inside, pond and lower floor's wetland, supply water for up/down layer wetland and the effluent collection pipe after the processing, it is characterized in that upper strata wetland and lower floor's wetland are underflow type artificial wet land, separated by fluid-tight interlayer between upper strata wetland and lower floor's wetland; Described water distributor places respectively the top of upper strata wetland and lower floor's wetland front end to be communicated with the water distribution equalizing tank, described effluent collection pipe places respectively the bottom of upper strata wetland and lower floor's wetland end to be communicated with water outlet collection joint pond, and the water distributor of the water distributor of upper strata wetland and effluent collection pipe, lower floor's wetland and effluent collection pipe are two to overlap independently running gear; The compounded mix of the under-filled haydite of described upper strata wetland and cinder, the compounded mix of haydite, cinder and soil, the compounded mix surface grafting waterplant of haydite, cinder and soil are filled in top; Described lower floor wetland fills up the compounded mix of gravel and volcanics.During this cover system operation, open the upper strata artificial swamp summer, winter operation lower floor artificial swamp.During summer operation upper strata artificial swamp, the water inlet pipe of lower floor's wetland and effluent collection pipe are closed, effluent stream is through upper strata wet land filler layer, utilize absorption cleaning effect, the adsorption cleaning effect of packing layer and the degraded cleaning action of the epontic microorganism of packing layer of the waterplant of growth, the pollutent in the sewage is effectively processed.During winter, under the long-term cold condition, the water inlet pipe of upper strata artificial swamp and effluent collection pipe are closed, the upper strata artificial swamp freezes, form freezing thermal insulation layer, the plant of upper strata artificial swamp surface coverage harvesting has been strengthened heat insulation effect, like this, even lower floor's artificial swamp also can normally move at subzero degree more than 20, sewage by the compounded mix layer dam and the degraded cleaning action of adsorption cleaning effect and the epontic microorganism of packing layer obtains processing.
The compounded mix of wetland bottom, upper strata, the volume ratio of its haydite and cinder is 1:1.5-2, haydite, the cinder compounded mix of being combined with soil adopted on top, increased its absorption purifying effect to pollutent, be conducive to again simultaneously the growth of waterplant, the volume ratio of haydite, cinder, soil is 1:1.5-2:1.5-2.
The gravel of lower floor's wetland and volcanics compounded mix, the volume ratio of gravel and volcanics is 1.5-2:1, when system starts, also adopt the Bioaugnentation technology, namely in sewage, add the high efficient cryogenic bacteria agent, promote the benign cycle of water nutrition material, improve the cold operation decontamination effect improving of lower floor's wetland.
Be provided with the preaeration system in the described water distribution equalizing tank, increased the treatment effect of wetland by the oxygen supply in early stage, avoid the generation of anaerobic conditions.
Described effluent collection pipe is comprised of effluent collection arm, outfall sewer with holes, and the outfall sewer bottom is provided with the emptying valve.
Described water outlet collection joint pond is built-in with internal circulation pump, is starting in the wet land system, and sewage is flowed at Performance of Constructed Wetlands Substrates layer internal recycle.
A kind of operation method of the double-deck subsurface flow constructed wetland system for the sewage disposal of cold district Small Urban comprises:
1. summer operation upper strata artificial swamp, winter operation lower floor artificial swamp;
2. artificial swamp starts:
A. pour into sanitary sewage to the Performance of Constructed Wetlands Substrates layer, close the water inlet pipe of this wetland and the valve of effluent collection pipe after filling with;
B. utilize the internal circulation pump in the water outlet collection joint pond that sewage is flowed at Performance of Constructed Wetlands Substrates layer internal recycle;
C. change the water yield of wet land system 1/3 every day, after so circulating 7 days, the beginning continuous flow.
When starting lower floor's wet land system, for strengthening the hypothermic phase treatment effect, when filling sanitary sewage to the Performance of Constructed Wetlands Substrates layer, other adds the high efficient cryogenic bacteria agent.
3, system's operation:
A. by entering underflow type artificial wet land by water distributor, flooding velocity is 14-20m to the sanitary sewage of process preaeration by equalizing tank
3/ h;
B. the hydraulic detention time of sewage in artificial swamp was at 24-36 hour;
C. after the sewage of processing is collected by collection joint pond, for subsequent disposal reuse or directly discharging.
The utlity model has following beneficial effect:
A. by the Practical Project checking, northeastward extremely frigid zones freezeup period steady running of technique by winters in summer two cover wetland alternate run, makes the annual steady running of whole system energy.
B. by estimating ton water cost of investment about in the of 1200 yuan, working cost is 0.38 yuan/ton of sewage, and as seen the investment running cost of this technique is low, is particularly suitable for samll cities and towns' scattering sewage treatment project of cold district economic base weakness.
C. under and the heavy-duty service condition extremely low in temperature, water temperature, the whole system water outlet can make water outlet satisfy the one-level B standard of GB18918-2002.
D. described process system administers and maintains simple and conveniently, and general professional staff safeguards and gets final product.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of double-deck subsurface flow constructed wetland system for the sewage disposal of cold district Small Urban, the water distributor 5 that the water outlet that comprises water distribution equalizing tank 1, the pond body opposite side of pond body one side integrates the upper strata wetland 3 of joint pond 2, body inside, pond and lower floor's wetland 4, supply water for up/down layer wetland and the effluent collection pipe 6 after the processing, upper strata wetland 3 and lower floor's wetland 4 are underflow type artificial wet land, and 4 of upper strata wetland 3 and lower floor's wetlands are by fluid-tight interlayer 7 separately; Described water distributor 5 places respectively the top of upper strata wetland 3 and lower floor's wetland 4 front ends to be communicated with water distribution equalizing tank 1, described effluent collection pipe 6 places respectively the bottom of upper strata wetland 3 and lower floor's wetland 4 ends to be communicated with water outlet collection joint pond 2, and the water distributor 5 of the water distributor 5 of upper strata wetland 3 and effluent collection pipe 6, lower floor's wetland 4 and effluent collection pipe 6 are two to overlap independently running gear; The compounded mix of described upper strata wetland 3 under-filled haydites and cinder, the compounded mix of haydite, cinder and soil, the compounded mix surface grafting waterplant of haydite, cinder and soil are filled in top; Described lower floor wetland 4 fills up the compounded mix of gravel and volcanics.
Be provided with the preaeration system in the water distribution equalizing tank of native system, the effluent collection pipe is comprised of effluent collection arm, outfall sewer with holes, and the outfall sewer bottom is provided with the emptying valve, and water outlet collection joint pond is built-in with internal circulation pump.
The compounded mix of wetland bottom, upper strata, the volume ratio of haydite and cinder is 1:1.5-2, the compounded mix on wetland top, upper strata, and the volume ratio of haydite, cinder, soil is 1:1.5-2:1.5-2, the compounded mix of lower floor's wetland, the volume ratio of gravel and volcanics are 1.5-2:1.
A kind of operation method of the double-deck subsurface flow constructed wetland system for the sewage disposal of cold district Small Urban comprises:
(1) summer operation upper strata artificial swamp, winter operation lower floor artificial swamp;
(2) artificial swamp starts:
A. pour into sanitary sewage to the Performance of Constructed Wetlands Substrates layer, close the water inlet pipe of this wetland and the valve of effluent collection pipe after filling with, when starting lower floor's wet land system, when filling sanitary sewage to the Performance of Constructed Wetlands Substrates layer, in sewage, add the high efficient cryogenic bacteria agent.
B. utilize the internal circulation pump in the water outlet collection joint pond that sewage is flowed at Performance of Constructed Wetlands Substrates layer internal recycle;
C. change the water yield of wet land system 1/3 every day, after so circulating 7 days, the beginning continuous flow;
(3) system's operation:
A. by entering underflow type artificial wet land by water distributor, flooding velocity is 14-20m to the sanitary sewage of process preaeration by equalizing tank
3/ h;
B. the hydraulic detention time of sewage in artificial swamp was at 24-36 hour;
C. after the sewage of processing is collected by collection joint pond, for subsequent disposal reuse or directly discharging.
Used sewage quality such as table 1 in the present embodiment
Table 1 entry water quality
| Project (unit) | Numerical value |
| COD（mg/L） | 85-120 |
| SS（mg/L） | 14-26 |
| NH 3-N（mg/L） | 26-38 |
| TN（mg/L） | 32-46 |
| TP（mg/L） | 1.3-3.9 |
Effluent quality such as table 2 after present embodiment is processed
Table 2 effluent quality
| Project (unit) | Numerical value |
| COD（mg/L） | 43-59 |
| SS（mg/L） | <10 |
| NH 3-N（mg/L） | 10-15 |
| TN（mg/L） | 15-20 |
| TP（mg/L） | 0.62-0.97 |
Claims (4)
1. double-deck subsurface flow constructed wetland system that is used for the sewage disposal of cold district Small Urban, the water distributor that the water outlet that comprises water distribution equalizing tank, the pond body opposite side of pond body one side integrates the upper strata wetland of joint pond, body inside, pond and lower floor's wetland, supply water for up/down layer wetland and the effluent collection pipe after the processing, it is characterized in that upper strata wetland and lower floor's wetland are underflow type artificial wet land, separated by fluid-tight interlayer between upper strata wetland and lower floor's wetland; Described water distributor places respectively the top of upper strata wetland and lower floor's wetland front end to be communicated with the water distribution equalizing tank, described effluent collection pipe places respectively the bottom of upper strata wetland and lower floor's wetland end to be communicated with water outlet collection joint pond, and the water distributor of the water distributor of upper strata wetland and effluent collection pipe, lower floor's wetland and effluent collection pipe are two to overlap independently running gear.
2. double-deck subsurface flow constructed wetland system according to claim 1 is characterized in that being provided with in the water distribution equalizing tank preaeration system.
3. double-deck subsurface flow constructed wetland system according to claim 1 is characterized in that the effluent collection pipe is comprised of effluent collection arm, outfall sewer with holes, and the outfall sewer bottom is provided with the emptying valve.
4. double-deck subsurface flow constructed wetland system according to claim 1 is characterized in that water outlet collection joint pond is built-in with internal circulation pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201167889U CN202658011U (en) | 2012-03-26 | 2012-03-26 | Double-layer potential flow constructed wetland system for sewage treatment of medium and small towns of cold regions |
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| CN2012201167889U CN202658011U (en) | 2012-03-26 | 2012-03-26 | Double-layer potential flow constructed wetland system for sewage treatment of medium and small towns of cold regions |
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| CN2012201167889U Expired - Lifetime CN202658011U (en) | 2012-03-26 | 2012-03-26 | Double-layer potential flow constructed wetland system for sewage treatment of medium and small towns of cold regions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103688897A (en) * | 2013-12-20 | 2014-04-02 | 中国水产科学研究院淡水渔业研究中心 | High-elevation oxygenation aquaculture system |
| CN104773898A (en) * | 2014-01-15 | 2015-07-15 | 中国科学院大学 | Physicochemical-artificial wetland combined process for strengthening treatment of fluorine and arsenic sewage |
| CN110655281A (en) * | 2019-11-07 | 2020-01-07 | 湖南九层台环境科技有限公司 | Distributed rural domestic sewage treatment system and treatment method |
-
2012
- 2012-03-26 CN CN2012201167889U patent/CN202658011U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103688897A (en) * | 2013-12-20 | 2014-04-02 | 中国水产科学研究院淡水渔业研究中心 | High-elevation oxygenation aquaculture system |
| CN104773898A (en) * | 2014-01-15 | 2015-07-15 | 中国科学院大学 | Physicochemical-artificial wetland combined process for strengthening treatment of fluorine and arsenic sewage |
| CN110655281A (en) * | 2019-11-07 | 2020-01-07 | 湖南九层台环境科技有限公司 | Distributed rural domestic sewage treatment system and treatment method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: JIANGSU HIT ACADEMY OF ENVIRONMENTAL PROTECTION CO., LTD. Effective date: 20140218 Owner name: JIANGSU HIT ACADEMY OF ENVIRONMENTAL PROTECTION CO Free format text: FORMER OWNER: HIT YIXING ACADEMY OF ENVIRONMENTAL PROTECTION Effective date: 20140218 |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140218 Address after: Environmental protection science and Technology Building No. 501 huankeyuan Luyuan 214205 Yixing Road, Jiangsu province Wuxi city 12 Patentee after: Jiangsu HIT Yixing Academy of Environmental Protection Co., Ltd. Address before: Environmental protection science and Technology Building No. 501 huankeyuan Luyuan 214205 Yixing Road, Jiangsu province Wuxi city 12 Patentee before: HIT Yixing Academy of Environmental Protection Patentee before: Jiangsu HIT Yixing Academy of Environmental Protection Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |