CN102491558B - Landscape water treatment process and device - Google Patents
Landscape water treatment process and device Download PDFInfo
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- CN102491558B CN102491558B CN201110407059.9A CN201110407059A CN102491558B CN 102491558 B CN102491558 B CN 102491558B CN 201110407059 A CN201110407059 A CN 201110407059A CN 102491558 B CN102491558 B CN 102491558B
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Abstract
The invention relates to an air floatation water treatment process and device, in particular to an air floatation water treatment device which adapts to interval running. An efficient process with low manufacturing cost and low operation cost is selected for removing algae from an artificial landscape water body, so that the content of N and P is lowered, and the water quality of the water body is kept. In the invention, a large-area landscape water body is treated with a landscape water treatment process and device in which air flotation is taken as a core; chemical dosing and filtering procedures are added, and chemical feeding is performed before the landscape water body enters an air floatation procedure, so that a colloid is destabilized; and filtering is performed after an air floatation procedure, so that pollutants in water are further removed. Due to the adoption of the process and the device, algae in the large-area landscape water body can be removed effectively, the N and P indexes of the water body are lowered, and various suspended matters are removed. Moreover, the process and the device have the characteristic of low cost.
Description
Technical field
The present invention relates to a kind of water technology, specifically relate to a kind of landscape water body treatment process and device thereof.
Background technology
Landscape water body refers to the ecological unit with structure and function globality centered by water body.Mainly comprise artificial flowing water, landscape pond, fountain essay and cooling water curtain etc.Landscape water body can improve environmental quality, and the rich space environment reduces the effects such as floating dust.Along with the fast development of China's urban economy, water quality deterioration phenomenon is in various degree all occurring in city appearance water body water quality.The water pollution spoilage problems produced, must administer, and forms thus the landscape water process field.Before this, water treatment is divided into two large fields substantially:
Clean water treatment: be mainly domestic water, industrial pure water, medical water-purifying processing etc., this class water technology can reach drinking-water water purification, industrial pure water standard.Its standard-required is high, and required cost is also high, and is not suitable for the processing of landscape water.General treating processes is within rising to the sand cylinder by pending water body.Deliver the flocculation medicament before entering the sand cylinder, water body and medicament are reacted, through filtering, water afterwards adds respectively disinfectant through volume pump again and, except the algae medicament, water outlet enters in landscape water body again.This processing mode can't effectively be removed N, the P in water body.
Sewage disposal: mainly refer to sanitary sewage disposal, trade effluent, sewage disposal etc., this class water technology, although can reach the effluent sewage emission standard, have very large distance with the surface water standard-required.This two classes water technology differs from one another, and treatment process and technique all break away from the surrounding enviroment impact and carries out.Current most landscape water is processed, and by above-mentioned two large fields, is changed.Maintenance for water quality of landscape water mainly comprises the methods such as physics, chemistry, physical chemistry combination, biology and ecology etc., and each class methods have it because of cost, technique, and cycle limit has suitability separately.Large-area landscape water body (man-made lake, river), be different from above-mentioned two large class water fully, because the integral part that this type of water body is periphery nature, human environment is subject to natural condition and the mankind's activity impact on it.Such as the eutrophication of water body, algae and microorganism etc.Above-mentioned water treatment technology, when carrying out the landscape water processing, just expose a lot of inapplicable problems, and its water quality is difficult to reach re-set target.Adopt chemical purification technology and biopurification technology, landscape water processed to not only complex process as sewage, and cost and operation cost higher.。
Summary of the invention
According to environmental aspect and the water pollution situation of China, water quality of landscape water worsens, and is mainly by N, the body eutrophication that P causes, the algae that output is a large amount of.Thereby major objective of the present invention selects that a kind of efficiently cost and operation cost all cheaper technique remove the algae in manmade landscape, artificial landscape's water body, reduce N exactly, the content of P, to keep the water quality of water body.
The present invention adopts take landscape water treatment technology and the device that air supporting is core and processes large-area landscape water body.Air flotation technology in the engineering of water treatment field and flotation process are quite similar on principle, mainly to pass into a large amount of intensive microbubbles in pending water, itself and impurity particle are adhered to mutually, form the buoyancy aid that proportion is less than water, thereby rely on buoyancy to rise to the water surface, pollutant in water is removed.The suspended particle of this technology to light weight in water, as the algae in lake, reservoir and part river, plant residue and tiny colloidal impurity; The dye granule of dyeing; The staple fibre of papermaking, chemical fibre industry; Oil refining, the oil of chemical industry and the droplet of organic solvent etc., have good removal effect.The characteristics of air flotation technology make his remove the algae of eutrophic water body, so reduce water body in N, P content aspect, have widely and use.And the cost of this technology and operation cost are all cheaper.
Yet only use air flotation technology can not prevent alga eruption, the present invention introduces dosing and filters two procedures on pneumatically supported basis.First by dosing, flocculate and make elimination of colloid stability before landscape water body enters air flotation pool, for the air supporting operation is created good condition, after air supporting, by the high efficiency filter unit, further remove the pollutent in water.
Technical scheme of the present invention is achieved in that a kind of landscape water treatment technology, it is characterized in that, its concrete steps are as follows:
1: arrange and block the water device around in the Landscape River zone, prevent that water body affects the water body in the Landscape River zone on every side;
2: select whether to need the water body in emptying Landscape River zone:
If need the water body in emptying Landscape River zone, forward step 3 to;
If the water body in choice for use Landscape River zone, forward step 4 to;
3: the water body in emptying Landscape River zone, and impermeable processing is carried out in this zone;
First by outer river after the moisturizing pipeline enters water treatment device, forward step 5 to;
4: if do not need moisturizing, landscape water, by water return pipeline, enters water treatment device; Forward step 5 to;
If need moisturizing, open the moisturizing pipeline simultaneously, after joining via the backwater of the landscape water of water return pipeline with via the moisturizing in the outer river of moisturizing pipeline, enter water treatment device; Forward step 5 to;
5: water treatment device adds flocculation agent to the water body in access to plant; After pending water after dosing enters the flocculation tank reaction, contact chamber, air flotation separator and filtering basin, through flocculation, air supporting, remove algae successively, reduces the content of nitrogen, phosphorus;
6: the treated water body enters Landscape River via outlet conduit.
Landscape water treatment device comprises: outlet conduit 1, go out water pump 11, water return pipeline 2, back water pump 21, moisturizing pipeline 3, small pump 31, administration device 4, line mixer 5, air-floating apparatus 6, filtering basin 7; It is characterized in that: described outlet conduit 1 one ends are communicated with filtering basin, and the other end is communicated with Landscape River through going out water pump 11; Described water return pipeline 2 one ends are communicated with Landscape River, and the other end is communicated with air-floating apparatus 6 through back water pump 21 and moisturizing pipeline 3; Described air-floating apparatus 6, described moisturizing pipeline 3 one ends are communicated with outer river, and the other end is communicated with air-floating apparatus 6 through small pump 31 and moisturizing pipeline 3.Described air-floating apparatus 6 consists of three parts, is respectively flocculation tank 61, contact chamber 62 and air flotation separator 63 Anshun orders and forms, and flocculation tank 61 1 ends are connected with moisturizing pipeline 3, and the other end is connected with contact chamber 62; Contact chamber 62 1 ends are connected with flocculation tank 61, and the other end is connected with air flotation separator 63; Air flotation separator 63 1 ends are connected with contact chamber 62, and an end is connected with outlet conduit 1.The output terminal of described administration device 4 is connected with moisturizing pipeline 3.Described line mixer 5 is altered and is connected on moisturizing pipeline 3.
The invention has the beneficial effects as follows: adopted the present invention, can effectively remove big area view river in algae, reduce the N of water body, the P index is also removed various suspended substances.And there are characteristics with low cost.
The accompanying drawing explanation
The flow process that Fig. 1 is this landscape water body refining plant and structure iron.
Specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail: a kind of landscape water treatment technology, its concrete steps are as follows:
1: arrange and block the water device around in the Landscape River zone, prevent that water body affects the water body in the Landscape River zone on every side;
2: select whether to need the water body in emptying Landscape River zone:
If need the water body in emptying Landscape River zone, forward step 3 to;
If the water body in choice for use Landscape River zone, forward step 4 to;
3: the water body in emptying Landscape River zone, and impermeable processing is carried out in this zone;
First by outer river after the moisturizing pipeline enters water treatment device, forward step 5 to;
4: if do not need moisturizing, landscape water, by water return pipeline, enters water treatment device; Forward step 5 to;
If need moisturizing, open the moisturizing pipeline simultaneously, after joining via the backwater of the landscape water of water return pipeline with via the moisturizing in the outer river of moisturizing pipeline, enter water treatment device; Forward step 5 to;
5: water treatment device adds flocculation agent to the water body in access to plant; After pending water after dosing enters the flocculation tank reaction, contact chamber, air flotation separator and filtering basin, through flocculation, air supporting, remove algae successively, reduces the content of nitrogen, phosphorus;
6: the treated water body enters Landscape River via outlet conduit.
Landscape water treatment device, by outlet conduit 1, go out water pump 11, water return pipeline 2, back water pump 21, moisturizing pipeline 3, small pump 31, administration device 4, line mixer 5, air-floating apparatus 6, filtering basin 7 and form; Wherein said outlet conduit 1 one ends are communicated with filtering basin, and the other end is communicated with Landscape River through going out water pump 11; Described water return pipeline 2 one ends are communicated with Landscape River, and the other end is communicated with air-floating apparatus 6 through back water pump 21 and moisturizing pipeline 3; Described moisturizing pipeline 3 one ends are communicated with outer river, and the other end is communicated with air-floating apparatus 6 through small pump 31 and moisturizing pipeline 3.Described air-floating apparatus 6 consists of three parts, is respectively flocculation tank 61, contact chamber 62 and air flotation separator 63 Anshun orders and forms, and wherein flocculation tank (61) one ends are connected with moisturizing pipeline (3), and the other end is connected with contact chamber (62); Contact chamber (62) one ends are connected with flocculation tank (61), and the other end is connected with air flotation separator (63); Air flotation separator (63) one ends are connected with contact chamber (62), and an end is connected with outlet conduit (1).。The output terminal of described administration device 4 is connected with moisturizing pipeline 3.Described line mixer 5 is altered and is connected on moisturizing pipeline 3.
As shown in Figure 1, pending Landscape River water body is through return water pipe 2, by back water pump 21 pressurizations, simultaneously, if need moisturizing, moisturizing by filling pipe 3 by small pump 31 pressurization after and backwater converge, the flocculation agent added by administration device 4 at pipe-line blending, after mixing, line mixer 5 enters air-floating apparatus 6, at first carry out flocculation reaction at flocculation tank 61, advance again contact chamber 62 and carried out the air supporting processing, again in air flotation separator 63, removed the gred, this series reaction is removed the algae among water body, and reduction nitrogen, the content of phosphorus, after further filtering pollutant in water through filter tank 7 again, treated water is by going out water pump 11 pressurizations, enter rising pipe 1, to river course each point distribution water outlet, thereby complete the circulation of moisturizing and interior river.In the present embodiment, the air flotation pool size is 9400mm * 5000mm * 1500mm, and molten gas reflux ratio is 10%-20%, and the air flotation separating chamber surface load is 5.4-9.0m3/(m2h), the residence time is 15min.The air flotation pool flow rate of water flow is controlled at 0.1m/s.The contact chamber residence time is greater than 60s.
At first in engineering water body upstream and downstream, two retaining dams are set, to avoid upstream and downstream to exert an influence to water quality of landscape water, then use and adopt and take the mechanical treatment technology that air supporting is core, internally river carries out the circularly purifying processing, make the water High-speed clarification, and remove algae, reduce the content of nitrogen and phosphorous.According to research and long-term practical experience, the circular treatment cycle of general landscape water body was good at 3-9 days.In this project, the landscape water body total Water is about 33000 cubic metres, adopts 5.5 days as treatment cycle, and in the west, river course, end arranges a set for the treatment of facility, and processing power is 250m3/h.Utilize this complete equipment, can be processed make up water simultaneously.Consider that summer maximum daily evaporation amount is not by 10mm (considering the moisturizing effects of precipitation), it is zero that leakage after complete seepage control measure is carried out in river course, and the greening irrigation water does not adopt Landscape River water.A day total evaporation is 0.01 * 8250=82.5 cube.Consider moisturizing in 10 days once, supplementary complete about 8 hours, design discharge is 100m3/h.Adjust the flocculation basin position of opening, for good flow condition is created in flocculation.Datedrawn: on July 1st, 2009; Sampling position: Yixing Chang Qiaohe.In the middle of processing water water outlet, two water outlets in the Chang Qiao river and outer river is rolled into a ball Mountain-spring and is extracted water sample and send the environment measuring station to detect, this time, divide three points to be sampled, the 1# sampling spot is processed between water two water outlets in the Chang Qiao river, the 2# point is positioned at processes the water water outlet, the 3# point is the outer river Mountain-spring of group, and through chemical examination, each point water quality is as follows:
Show each dry point water quality condition
From analytical results, the outer river Mountain-spring of group water quality situation is poor, and particularly the eutrophication phenomenon is comparatively serious.Wherein ammonia nitrogen, total phosphorus and total nitrogen index are respectively in surface water IV class, V class and bad V class level.After the dosing air-bearing water purification device is processed, the water quality of relief outlet position and river course downstream position all has clear improvement, and except total phosphorus, other indexs all can reach surface water IV class standard.
Claims (5)
1. a landscape water treatment technology, is characterized in that, its concrete steps are as follows:
1) arrange and block the water device around in the Landscape River zone, prevent that water body affects the water body in the Landscape River zone on every side;
2) select whether to need the water body in emptying Landscape River zone:
If need the water body in emptying Landscape River zone, forward step 3 to;
If the water body in choice for use Landscape River zone, forward step 4 to;
3) water body in emptying Landscape River zone, and impermeable processing is carried out in this zone;
First by outer river after the moisturizing pipeline enters water treatment device, forward step 5 to;
4), if do not need moisturizing, landscape water, by water return pipeline, enters water treatment device; Forward step 5 to;
If need moisturizing, open the moisturizing pipeline simultaneously, after joining via the backwater of the landscape water of water return pipeline with via the moisturizing in the outer river of moisturizing pipeline, enter water treatment device; Forward step 5 to;
5) water treatment device adds flocculation agent to the water body in access to plant; After pending water after dosing enters the flocculation tank reaction, contact chamber, air flotation separator and filtering basin, through flocculation, air supporting, remove algae successively, reduces the content of nitrogen, phosphorus;
6) the treated water body enters Landscape River via outlet conduit.
2. a kind of landscape water treatment technology as claimed in claim 1, its water treatment device comprises: outlet conduit (1), go out water pump (11), water return pipeline (2), back water pump (21), moisturizing pipeline (3), small pump (31), administration device (4), line mixer (5), air-floating apparatus (6), filtering basin (7); It is characterized in that: described outlet conduit (1) one end is communicated with filtering basin (7), and the other end is communicated with Landscape River through going out water pump (11); Described water return pipeline (2) one ends are communicated with Landscape River, and the other end is communicated with air-floating apparatus (6) through back water pump (21) and moisturizing pipeline (3); Described moisturizing pipeline (3) one ends are communicated with outer river, and the other end is communicated with air-floating apparatus (6) through small pump (31) and moisturizing pipeline (3).
3. a kind of landscape water treatment technology as claimed in claim 2, it is characterized in that, described air-floating apparatus (6) sequentially is comprised of flocculation tank (61), contact chamber (62) and air flotation separator (63) three parts, flocculation tank (61) one ends are connected with moisturizing pipeline (3), and the other end is connected with contact chamber (62); Contact chamber (62) one ends are connected with flocculation tank (61), and the other end is connected with air flotation separator (63); Air flotation separator (63) one ends are connected with contact chamber (62), and an end is connected with outlet conduit (1).
4. a kind of landscape water treatment technology as claimed in claim 2, is characterized in that, the output terminal of described administration device (4) is connected with moisturizing pipeline (3).
5. a kind of landscape water treatment technology as claimed in claim 2, is characterized in that, described line mixer (5) is altered and is connected on moisturizing pipeline (3).
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| CN201110407059.9A CN102491558B (en) | 2011-12-09 | 2011-12-09 | Landscape water treatment process and device |
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| CN201110407059.9A CN102491558B (en) | 2011-12-09 | 2011-12-09 | Landscape water treatment process and device |
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| CN102786170B (en) * | 2012-08-13 | 2013-12-11 | 北京市环境保护科学研究院 | Landscape water treatment method |
| CN104276706A (en) * | 2014-10-09 | 2015-01-14 | 常州大学 | Water purifying device and water purifying method for riverway |
| CN104803553A (en) * | 2015-04-13 | 2015-07-29 | 深圳市城基园林发展有限公司 | Landscape water treatment technology |
| CN105084588B (en) * | 2015-08-03 | 2018-07-17 | 南京天河水环境科技有限公司 | The back-washing method of float type water processing equipment, method for treating water and the equipment |
| CN105541022A (en) * | 2015-12-30 | 2016-05-04 | 聚光科技(杭州)股份有限公司 | Advanced purification method for enclosed water area |
| CN110078257A (en) * | 2019-05-14 | 2019-08-02 | 上海斐晟企业管理有限公司 | A kind of large-scale closing static landscape water body processing method and system |
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| CN101376532B (en) * | 2007-08-31 | 2010-12-15 | 中国石油天然气股份有限公司 | Low temperature oil-contaminated water processing method |
| CN101870530B (en) * | 2009-04-22 | 2012-07-04 | 北京新金应利科技发展有限公司 | Method for treating and recycling circulating wastewater |
| CN102107968A (en) * | 2011-01-20 | 2011-06-29 | 山东建筑大学 | Water purification system and water purification method of flotation filter tank |
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Owner name: HUADONG ARCHITECTURE DESIGN + RESEARCH INST CO., L Free format text: FORMER OWNER: SHANGHAI XIAN DAI ARCHITECTURAL DESIGN (GROUP) CO., LTD. Effective date: 20140416 |
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Effective date of registration: 20140416 Address after: 200041 Jingan District Road, Shimen, No. two, No. 258, Shanghai Patentee after: East China Architectural Design & Research Institute Co., Ltd. Address before: 200041 Jingan District Road, Shimen, No. two, No. 258, Shanghai Patentee before: Shanghai Xiandai Archtectural Design (Group) Co., Ltd. |