WO1995029296A1 - Verfahren und einrichtung zum enteisen von fahrbahnen unter wiederverwendung rückgewonnener auftaulösungen - Google Patents
Verfahren und einrichtung zum enteisen von fahrbahnen unter wiederverwendung rückgewonnener auftaulösungen Download PDFInfo
- Publication number
- WO1995029296A1 WO1995029296A1 PCT/EP1995/001534 EP9501534W WO9529296A1 WO 1995029296 A1 WO1995029296 A1 WO 1995029296A1 EP 9501534 W EP9501534 W EP 9501534W WO 9529296 A1 WO9529296 A1 WO 9529296A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thawing
- water
- concentration
- solution
- agent
- Prior art date
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 230000008014 freezing Effects 0.000 claims abstract description 3
- 238000007710 freezing Methods 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims abstract description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 22
- 231100000719 pollutant Toxicity 0.000 claims description 22
- 238000009833 condensation Methods 0.000 claims description 18
- 230000005494 condensation Effects 0.000 claims description 18
- 210000000056 organ Anatomy 0.000 claims description 9
- 239000010426 asphalt Substances 0.000 claims description 3
- 238000005342 ion exchange Methods 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 230000001473 noxious effect Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 41
- 238000001556 precipitation Methods 0.000 abstract description 4
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- 238000010612 desalination reaction Methods 0.000 description 11
- 239000003921 oil Substances 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 238000007792 addition Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H10/00—Improving gripping of ice-bound or other slippery traffic surfaces, e.g. using gritting or thawing materials ; Roadside storage of gritting or solid thawing materials; Permanently installed devices for applying gritting or thawing materials; Mobile apparatus specially adapted for treating wintry roads by applying liquid, semi-liquid or granular materials
- E01H10/005—Permanently-installed devices for applying gritting or thawing materials, e.g. for spreading grit, for spraying de-icing liquids
Definitions
- the invention relates to a method for de-icing carriageways, to which a thawing solution of thawing agent in water is applied to lower the freezing point, which, if appropriate mixed with rainwater and melt water, runs off the carriageway as thawing water, which is collected, optionally cleaned and after Testing of its thawing agent content is at least partially reused, if necessary by adding fresh thawing agent as the aqueous thawing solution, and on a device for carrying out the method, with organs attached along the carriageway to be de-iced for applying the thawing solution to the Roadway and drainage devices for collecting the defrost water from the roadway, which are connected via channels, a concentration sensor for the defrosting agent concentration and a switch controlled by the sensor on the one hand to a drain and on the other hand to a catch basin, which in turn like which has a connection to the organs for applying the thawing agent.
- a device and such a method are known from WO 93/00481.
- the thawing water that runs off the carriageway, in particular of motorways is collected and, if necessary after the addition of further defrosting agent or highly concentrated defrosting solution, reapplied to the carriageway, in particular which are sprayed on automatically via nozzles.
- pure rainwater that runs off the roadway can also be drained directly into a receiving water.
- the recycling of the thawing water for new thawing solution leads to a saving in new thawing agent and also relieves the environment, which would otherwise be used by the thawing water content of thawing agent, especially salt.
- the invention is intended to achieve a better utilization of the recoverable thawing agent. This is done by increasing the solution concentration of the thaw water to be reused before it is re-applied as a thawing solution in a separation step, in which partial streams of de-icing agent-free or low-water and on the other hand a more concentrated solution are produced, preferably with a device , in which a concentration increase step for the concentration of the thawing agent in the thawing water to be reused as thawing solution is switched on between the collecting basin and the oranges for applying the thawing agent, with a derivation for the portion of the thawing water, which on the other hand is reduced in its concentration.
- a concentration increase step for the concentration of the thawing agent in the thawing water to be reused as thawing solution is switched on between the collecting basin and the oranges for applying the thawing agent, with a derivation for the portion of the thawing water, which on the
- the degree of desalination and the effort required can be selected taking into account the climatic conditions that determine the frequency and quantity of thawing solution applied to the road and the purity requirements for the wastewater that is released into the environment.
- the method according to the invention is particularly suitable for use on a roadway, the top layer of which consists of drain asphalt, since only little condensation and slush is sprayed into the environment in such roadway surfaces, but because of the porosity of the asphalt, the water seeps away on the roadway and is collected below.
- the method according to the invention can be combined very advantageously with a test of the pollutant load in the condensation water, in particular the load with oil, and a discharge of star 1 -laden condensate water or a separation of the pollutant, for example in an oil separator or, with a better separation effect , in a filter like a microfilter.
- Microfilters have larger pores than ultrafilters, but are sufficiently small to retain oil.
- normal rainwater or wastewater that accumulates on the road can also be subjected to a pollutant exposure test and, if necessary be subjected to a corresponding subsequent treatment or separation.
- the single figure shows a top view of a roadway with a device located at the edge of the roadway for automatic deicing of the roadway.
- the drawing shows a roadway 1 with roadway edges 2 and along one of the roadway edges drawn-in manholes 3, which are connected via drainage channels 4 to a common drainage channel 5.
- This installation is drawn along one of the edges of the carriageway; it can also be provided in triplicate on both sides or on carriageways with median strips.
- organs for applying thawing solution namely spray nozzles 11, are installed along the carriageway, which are fed via a distribution line 12, which in turn is supplied with thawing solution, namely generally saline solution under pressure, via a line 13.
- a sensor 18 which in the embodiment shown is also a sensor for the pollution of the condensation water, e.g. B. oil contained therein, and also for the concentration of thawing agent and controls two switches 19 and 20, of which the switch 19 is first turned on and a pollutant switch, at one output of which the switch 20 connects, which is a solution switch.
- the outlet of the pollutant switch 19 leads to a pollutant collecting basin 23, in which water mixed with pollutants such as oil or chemicals that have got onto the roadway, for example due to an accident, is collected for the purpose of disposal.
- Unloaded or only negligible condensate water comes to the switch 20, which is controlled by the sensor 18 in dependence on the concentration of thawing agent in such a way that thawing water flowing through it either when the concentration is lower than z. B. 0.05%, is drained into a receiving water 21, and, if the concentration is above this value, __; ⁇ a condensate collecting basin 24 is passed.
- the condensate collecting basin 24 is in turn followed by a basin, namely a solution collecting basin 25, via a concentration increase stage 26.
- the basin 25 is considerably smaller than the basin '4 and is for protection against the ingress of Rain water covered, it could also be a tank.
- the condensation water basin 24 accordingly has a capacity in the order of 30% of that during the winter season, So from November to February, statistically in the area in question and the amount of water to be expected for the supplied road surface, while the solution collecting tank 25 has a capacity of about 1 to 5% of the amount of water Concentration level 26, which enables high flow and desalination rates, can increase capacity of the condensation water collecting basin 24 and the solution collecting basin 25 can also be designed to be smaller, since only smaller amounts of liquid have to be temporarily stored. sen.
- the percentages mentioned are only to be regarded as an example, since they can fluctuate widely.
- the proportion of condensation to be processed depends on the one hand on the respective climatic conditions, i. H. in particular on the amount and frequency of the application of thawing solution resulting from the given temperatures and amounts of precipitation.
- the requirements placed on the quality of the wastewater to be discharged and which are based on the respective environmental requirements, are decisive for the degree of desalination and the permissible residual value of the wastewater.
- the concentration increase stage 26 consists of a commercially available desalination plant which delivers completely or largely desalinated water via a drain line 31 into the receiving water and, in the case of the usual water desalination as a remainder, in the present case as the useful product, a concentrated de-icing agent solution via a line 32 introduces into the solution pool 25.
- the concentration increase stage 26 also contains a microfilter connected upstream of the actual desalination stage, which filters oils and fats and supplies them to the pollutant collecting basin 23 via a line 33. Smaller amounts of pollutants carried, which do not yet lead to a complete switchover of the pollutant switch 19, are filtered off here.
- the thawing solution is initially only taken in a roughly adjusted concentration and passes through a further sensor 39 which controls a mixing valve 40 which the thawing solution, depending on requirements, from a storage tank 41 fresh thawing agent or highly concentrated thawing agent solution, or admixed water from a water pipe 42 again. It may then be necessary to add water. if the concentration of the thawing solution is adjusted as a function of temperature and the concentration increase stage 26 delivers a concentration intended for the maximum expected cold.
- the desired concentration of the thawing solution is set directly in the solution collecting basin 25, on the one hand by introducing a solution with a high concentration from the concentration increase stage 26 and on the other hand a certain amount of thawing solution of low concentration as required Tration ntration is introduced from the condensation water collecting basin 24 via a further line into the solution collecting basin 25.
- the water released through the switch 20 and the concentration increase stage 26 can be re-entered into an intermediate pool.
- a multi-stage increase in concentration can also be carried out, with condensation water of a relatively high thawing agent concentration coming from the roadway being able to be introduced directly into a basin with an already higher concentration level.
- One possibility would be: defrost water below 0.1% Salzgeh a lt give in the wastewater, condensation of 0.1 to 1% £ zgehalt in a first giving and defrost water from the roadway been over 1 condensate-collecting tank with a low concentration % Contains defrosting agent, immediately in a second stage of the thawing water collecting basin.
- the concentration level itself can be divided into a cascade of smaller levels.
- the condensation water coming from the carriageway is generally only introduced into the pollutant catch basin 23. From there, it passes through a cleaning unit that filters out pollutants and dirt particles. Only then does the pretreated water, depending on the concentration of thawing agent, either get into the thawing water collecting basin 24 or to Floodwater 21. This ensures that no malfunctions in the desalination plant are caused by dirt or pollutant components.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Physical Water Treatments (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Sewage (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK95918593T DK0757736T3 (da) | 1994-04-26 | 1995-04-24 | Fremgangsmåde samt indretning til at fjerne is på kørebane ved genanvendelse af genindvundne tøopløsninger |
CA002188935A CA2188935A1 (en) | 1994-04-26 | 1995-04-24 | Method and device for de-icing road carriageways involving the re-use of recovered thawing solution |
US08/727,576 US5853262A (en) | 1994-04-26 | 1995-04-24 | Process and apparatus for de-icing roadways and re-using collected melting solution |
EP95918593A EP0757736B1 (de) | 1994-04-26 | 1995-04-24 | Verfahren und einrichtung zum enteisen von fahrbahnen unter wiederverwendung rückgewonnener auftaulösungen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4414520A DE4414520C1 (de) | 1994-04-26 | 1994-04-26 | Verfahren und Einrichtung zum Enteisen von Fahrbahnen unter Wiederverwendung rückgewonnener Auftaulösungen |
DEP4414520.9 | 1994-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995029296A1 true WO1995029296A1 (de) | 1995-11-02 |
Family
ID=6516466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/001534 WO1995029296A1 (de) | 1994-04-26 | 1995-04-24 | Verfahren und einrichtung zum enteisen von fahrbahnen unter wiederverwendung rückgewonnener auftaulösungen |
Country Status (7)
Country | Link |
---|---|
US (1) | US5853262A (de) |
EP (1) | EP0757736B1 (de) |
AT (1) | ATE164901T1 (de) |
CA (1) | CA2188935A1 (de) |
DE (1) | DE4414520C1 (de) |
DK (1) | DK0757736T3 (de) |
WO (1) | WO1995029296A1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1002231C2 (nl) * | 1996-02-02 | 1997-08-07 | P Van Der Kooij Transport N V | Werkwijze voor het bestrijden van koudeoverlast. |
US7717173B2 (en) * | 1998-07-06 | 2010-05-18 | Ecycling, LLC | Methods of improving oil or gas production with recycled, increased sodium water |
US8192633B2 (en) * | 1998-07-06 | 2012-06-05 | Grott Gerald J | Methods of energy storage and transfer |
US7866916B2 (en) * | 1998-07-06 | 2011-01-11 | Ecycling, LLC | Methods for deicing roads |
US7758281B2 (en) * | 2004-07-08 | 2010-07-20 | General Sports Venue Llc | Synthetic sports turf having improved playability and wearability |
KR100608483B1 (ko) | 2006-04-04 | 2006-08-02 | (주)도심엔지니어링 종합건축사사무소 | 건축물 진입램프 결빙방지구조 |
US20100051556A1 (en) * | 2008-08-29 | 2010-03-04 | Grott Gerald J | Methods of purifiying water using waste brines to regenerate ion-exchange resins |
US20100147767A1 (en) * | 2008-12-15 | 2010-06-17 | Grott Gerald J | Method for purifying waste saline waters without reagent waste |
US20120205459A1 (en) * | 2011-02-10 | 2012-08-16 | Envirotech Services, Inc. | Road spray system and method |
ITTO20110245A1 (it) * | 2011-03-21 | 2012-09-22 | . | Sistema e procedimento per il trattamento anticongelamento di manti stradali drenanti |
SE1350548A1 (sv) * | 2013-05-06 | 2014-11-07 | Nordic Ground Support Equipment Ip Ab | Tågavisningssystem |
JP6552541B2 (ja) * | 2017-04-12 | 2019-07-31 | 日中東北物産有限会社 | 凍結防止液の散布循環システム |
JP6619771B2 (ja) * | 2017-05-10 | 2019-12-11 | 北海道ポラコン株式会社 | 凍結防止液循環装置 |
US10934673B2 (en) | 2017-11-10 | 2021-03-02 | Eagle Aerospace Ltd | Method and system for applying, recovering and recycling airfield de-icing chemicals |
CN108457336A (zh) * | 2018-01-29 | 2018-08-28 | 天津美加恒升科技发展有限公司 | 一种智能雨水回收系统 |
AT524209B1 (de) * | 2020-12-16 | 2022-04-15 | C Kidery Gerhard | System zur versickerung von niederschlagswasser |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2197767A1 (de) * | 1972-08-28 | 1974-03-29 | Busthane Enterprises Ltd | |
US4634084A (en) * | 1984-03-09 | 1987-01-06 | De-Icing System K.B. | Aircraft de-icing system |
WO1993000481A2 (de) * | 1991-06-29 | 1993-01-07 | Cts Consulting Gmbh | Verfahren und einrichtung zum enteisen von fahrbahnen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4392959A (en) * | 1981-05-15 | 1983-07-12 | Coillet Dudley W | Process for sterilization and removal of inorganic salts from a water stream |
US5104068A (en) * | 1990-08-10 | 1992-04-14 | Krilla Ronald A | Apparatus and method for de-icing and anti-icing (and/or cleaning and rinsing) aircraft |
US5350533A (en) * | 1993-01-26 | 1994-09-27 | General Atomics International Services Corporation | Pavement deicer compositions |
US5462655A (en) * | 1993-09-20 | 1995-10-31 | Ladd; Michael | Vehicle containment mat with vacuum recovery and recycle means |
US5515623A (en) * | 1994-07-29 | 1996-05-14 | Root Spring Scraper Co. | Snowplow with deicer spray attachment |
-
1994
- 1994-04-26 DE DE4414520A patent/DE4414520C1/de not_active Expired - Fee Related
-
1995
- 1995-04-24 US US08/727,576 patent/US5853262A/en not_active Expired - Fee Related
- 1995-04-24 EP EP95918593A patent/EP0757736B1/de not_active Expired - Lifetime
- 1995-04-24 DK DK95918593T patent/DK0757736T3/da active
- 1995-04-24 CA CA002188935A patent/CA2188935A1/en not_active Abandoned
- 1995-04-24 WO PCT/EP1995/001534 patent/WO1995029296A1/de active IP Right Grant
- 1995-04-24 AT AT95918593T patent/ATE164901T1/de not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2197767A1 (de) * | 1972-08-28 | 1974-03-29 | Busthane Enterprises Ltd | |
US4634084A (en) * | 1984-03-09 | 1987-01-06 | De-Icing System K.B. | Aircraft de-icing system |
WO1993000481A2 (de) * | 1991-06-29 | 1993-01-07 | Cts Consulting Gmbh | Verfahren und einrichtung zum enteisen von fahrbahnen |
Also Published As
Publication number | Publication date |
---|---|
EP0757736B1 (de) | 1998-04-08 |
ATE164901T1 (de) | 1998-04-15 |
DE4414520C1 (de) | 1995-09-28 |
US5853262A (en) | 1998-12-29 |
DK0757736T3 (da) | 1999-01-11 |
CA2188935A1 (en) | 1995-11-02 |
EP0757736A1 (de) | 1997-02-12 |
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