CN104860488B - Rural households utilize the method that rice wine oneself removes nitrate in groundwater - Google Patents
Rural households utilize the method that rice wine oneself removes nitrate in groundwater Download PDFInfo
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- CN104860488B CN104860488B CN201510311360.8A CN201510311360A CN104860488B CN 104860488 B CN104860488 B CN 104860488B CN 201510311360 A CN201510311360 A CN 201510311360A CN 104860488 B CN104860488 B CN 104860488B
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Abstract
The invention discloses a kind of method that rural households utilize rice wine oneself to remove nitrate in groundwater.With rural area from wine rice wine as carbon source, utilizing biological denitrification to remove nitrate, processing means is mainly made up of cleaning position and drinking-water storehouse, and device is closed, can indoor location.Family Day process water, up to 100L, can meet the daily drunk demand of family (without undrinkable water such as doing washing, have a bath), daily consumption rice wine about 15mL, and within one month, cost is less than 5 yuans.The present invention is a kind of for having extracted the indoor processing method of subsoil water, and high treating effect easily operates, easily manages, do not results in secondary pollution, and with low cost, can be used for central water supply water source, rural area, and scale presses expanded demand.
Description
Technical field
The present invention relates to technical field is groundwater science and engineering technical field, and a kind of rural households utilize the method that rice wine oneself removably descends Nitrate In Drinking Water.
Background technology
Nitrate has become as rural areas in our country family and provides pollutant main in groundwater source for oneself.Due to agrochemical excess use, rural area solid refuse, anaerobic tank and the unreasonable disposal of sanitary sewage, rural groundwater suffers azotate pollution the most universal.In underground drinking water, the raising of nitrate concentration can produce harm to human health, can cause methemoglobinemia, causes the increase of child's leukemic probability, adult's incidence gastric cancer rate to increase.So far, the removal nitrate method proposed in achievement in research is a lot, mainly include biology in situ denitrogenation and reactor organisms denitrogenation and some physical chemistry methods, wherein biological denitrification technology because of its efficiently, be easily managed and the advantage such as operate, expense is low and the most concerned.But, in-situ remediation of underground water has the problems such as technical difficulty is big, cost is high, effect is uncertain.To this end, the present invention develops new visual angle: allow rural households purify up to standard in a short time to the azotate pollution subsoil water extracted, convenient and safe drink.This is a good method solved practical problems.
Utilize denitrification technology to remove nitrate in groundwater, require supplementation with available carbon source.Ethanol is proved to be a kind of available efficient liquid carbon source, has easily operation, low cost and wide material sources feature.Say from containing alcohol component, the carbon source that workshop, rural area or family are also available with from the rice wine (also referred to as " soil wine ") made.Owing to convenient sources, the cost of rice wine are inexpensive simple with use, adding that rice wine is again daily drunk product, the most more rural households accept.The more important thing is, by our experimentation in the past few years, by family, every day must drink based on water yield 100L (without undrinkable water, such as wash water), the usage amount about 15mL of rice wine (alcoholic strength 30 °), the about amount of " 1 cup wine ", not only usage amount is few, and easily measures.Therefore, to current, this invention promotes that " beautiful rural area, safty of drinking water " is built, have important potential significance and practical value.
It is emphasized that the present invention be directed to drinking water source that rural households have extracted out, that be stored in ground from underground processes, and is a kind of dystopy processing method, is not the in-situ treatment for land burial water body.It is similar to common rural households and adds, in water vat, the process for purifying water that Alumen promotes to precipitate.
Summary of the invention
It is an object of the invention to provide one wide material sources, received rice wine with low cost, easy as carbon source, utilize denitrification mechanism, it is achieved rural households oneself removes extracting nitrate in groundwater, is easy to the method that safety is drunk.
Concretely comprise the following steps:
One, a nitrate removal device is set up, including cleaning position, drinking-water storehouse, conduit and water pump；Wherein, cleaning position is positioned at above drinking-water storehouse.
(1) equipped with the subsoil water of extracting inside cleaning position, its top is provided with the water inlet being connected with water pump and rice wine stake mouth (air-vent of holding concurrently)；Side, middle and lower part is provided with the conduit being connected with storehouse of drinking water and controllable flow rate valve；Bottom side is provided with the flush discharge mouth of sand leakage avoiding.
(2) drinkable water after drinking-water storehouse major storage removes nitrate, its top is connected by conduit with cleaning position, and is provided with bleaching liquid stake mouth (air-vent of holding concurrently)；Bottom side is provided with user and takes the mouth of a river.
(3) water pump is used to extract the facility of subsoil water from well, and the water of extraction is connected with cleaning position by conduit.
Unit scale is determined with the amount of water required, cleaning position and drinking-water storehouse rustless steel or polyethylene (LLDPE) material；For rural area central water supply, unit scale can be bigger, it is possible to use brick mixes material and constructs.
Two, utilize the thickness sand carrier as indigenous microorganism of natural sediment, be placed in the bottom of cleaning position.The particle diameter of sand is 0.35-2mm, can directly use the building thickness sand of cleaning, and the most well-balanced, consumption accounts for the 1/5-1/4 of cleaning position volume；This method utilizes the indigenous microorganism in sand material and subsoil water to participate in purifying, it is not necessary to additionally microorganisms.
Three, extract subsoil water by water pump, directly store full cleaning position.
Four, rice wine adds: property is added above cleaning position once a day；Rice wine addition cubing, can provide instruction, daily water consumption 100L, nitrate nitrogen (NO3-N) concentration 30mg/L in conjunction with actual used water amount and nitrate concentration to particular user area, and rice wine addition is 10-15mL.
Five, first when using this device, need controllable flow rate valve between temporary close cleaning position and drinking-water storehouse 2-3 days, the most sustainable open valve so that the water gravity flow in cleaning position enters drinking-water storehouse, and normal flow controls at low speed level i.e. 50-70mL/min.
Six, bleaching liquid adds: the water storage in drinking-water storehouse is implemented bleaching liquid sterilization, is added by the stake mouth above drinking-water storehouse, and daily water consumption 100L, bleaching liquid addition is 5-10mL.
Seven, drinking water is taken: drinking water is taken the mouth of a river by user bottom drinking-water storehouse and taken；Drink after drinking water needs are boiled, should not directly drink.
Eight, working service: properly functioning for ensureing facility, it is to avoid over loading or invalid operation, user should control water purposes, does not make non-drinking-water purposes, high-efficient water use, using water wisely；Cleaning position and drinking-water storehouse need to close, but are provided with passage；Bottom of device is provided with Butterworth Hatch, it may be necessary to discharged water by big flow and rinse cleaning position and drinking-water storehouse.
Apparatus of the present invention are easily installed, simple to operate, and material source is extensive, and with low cost, stability is good, and utilizing rural area is carbon source from making rice wine, removes nitrate in water by biological denitrification, is difficult to cause secondary pollution；It is not only suitable for rural households, is also applied for rural collective after expansion scale and supplies water；Remove nitrate in water for rural households and provide the way of a kind of simple possible.
Accompanying drawing explanation
Fig. 1 is the nitrate removal device schematic diagram of the embodiment of the present invention.
Labelling in figure: 1-cleaning position；2-drinks water storehouse；3-rice wine stake mouth (air-vent of holding concurrently)；4-layer of sand；The subsoil water of 5-extracting；6-controllable flow rate valve；7-flush discharge mouth；8-the first conduit；9-user takes the mouth of a river；10-drinking water；11-bleaching liquid stake mouth (air-vent of holding concurrently)；12-underground reservoir；13-well；14-water pump；15-the second conduit；16-the 3rd conduit.
Detailed description of the invention
Embodiment
:
The daily drunk subsoil water of certain rural households contains nitrate nitrogen (NO3-N) concentration 30mg/L, exceedes normal concentration 20mg/L of underground drinking water source nitrate nitrogen (NO3-N), normal concentration 10mg/L of drinking water source, earth's surface nitrate nitrogen (NO3-N) that country's " drinking water sanitary standard " (GB 5749-2006) formulates.Family Day drinking water consumption 100L (without other daily water consumption, such as laundry, flush the toilet, mop floor).By the technology of the present invention, realize nitrate nitrogen (NO3-N) concentration by following operating procedure and drop to below 2mg/L (in conjunction with Fig. 1).
One, setting up a nitrate removal device, including cleaning position 1, drinking-water storehouse the 2, first conduit the 8, second conduit the 15, the 3rd conduit 16 and water pump 14, wherein cleaning position 1 volume 200L, drink water storehouse 2 volume 150L；Cleaning position (1) is positioned at drinking-water storehouse (2) top；Rice wine stake mouth (air-vent of holding concurrently) 3, the internal subsoil water 5 equipped with extracting are arranged at cleaning position 1 top；Bottom is layer of sand 4, and there is flush discharge mouth 7 side of bottom；Cleaning position 1 is connected with drinking-water storehouse 2 by the first conduit 8, and there is controllable flow rate valve 6 side of cleaning position 1 middle and lower part；Drinking-water top, storehouse 2 is bleaching liquid stake mouth (air-vent of holding concurrently) 11, and internal equipped with drinking water 10, the side of bottom has user to take the mouth of a river 9；Well 13 in underground reservoir 12 is connected by the 3rd conduit 16 and water pump 14, and water pump 14 is connected with cleaning position 1 by the second conduit 15；Stainless steel used by cleaning position (1) and drinking-water storehouse (2).
Two, cleaning position 1 water-retention: first, close the controllable flow rate valve 6 between cleaning position 1 and drinking-water storehouse 2, extracted the subsoil water of azotate pollution, and full cleaning position 1 by water pump 14, subsoil water 5 volume of extracting is 150L (partial volume is by layer of sand filling).
Three, rice wine is added: disposably adding rice wine volume 22.5mL(alcoholic strength 30 ° to cleaning position 1 by cleaning position 1 rice wine stake mouth (air-vent of holding concurrently) 3, ethanol content is 0.24g/mL).
Four, the initial stage ferments: cleaning position 1 hydrostatic is placed 2-3 days, ferments the phase as biological agent.
Five, low speed gravity flow: after fermenting the phase, opens the controllable flow rate valve 6 between cleaning position 1 and drinking-water storehouse 2, purifies water with low flow velocity shelves (60mL/min) gravity flow and saves to drinking-water storehouse 2, keeps one day 24 hours flowing automatically；The junction of cleaning position 1 and the first conduit 8 is arranged on 15cm above layer of sand 4, it is to avoid drift sand flows into drinking-water storehouse 2.
Six, drinking-water bleaching: clean water sump 1 flows automatically 1 day, 90L of intaking toward drinking-water storehouse 2；Storehouse 2 water-retention to be drunk water is more than half, adds 10 mL bleaching liquid sterilizations in drinking-water storehouse 2；In drinking-water storehouse 2 water outlet, nitrate nitrogen (NO3-N) concentration is less than 2mg/L, less than drinking water standard concentration, and does not has nitrite and ammonia nitrogen to exceed standard, and pH value is 7.5.
Seven, drinking water 10 is taken the mouth of a river 9 taken by user bottom drinking-water storehouse 2.Note drinking raw, simultaneously it should be noted that using water wisely.
Eight, cleaning position 1 continues water: every day at dusk, fills the subsoil water 5 of extracting, and disposably adds rice wine 15mL to cleaning position 1.
Utilizing this invention, rural households can do it yourself, remove the nitrate in underground water source simple economy;Drinkable water 80-100L is provided;Needing every day in terms of 15mL rice wine comes by family, 500mL rice wine can use 1 month, and cost is in 3-4 unit.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction.Every any simple modification, equivalent variations and modification made above example according to the technical spirit of the present invention, the most still belongs to the protection domain of technical solution of the present invention.
Claims (1)
1. the method that rural households utilize rice wine oneself to remove nitrate in groundwater, it is characterised in that its concrete steps:
One, a nitrate removal device is set up, including cleaning position (1), drinking-water storehouse (2), the first conduit (8), the second conduit (15), the 3rd conduit (16) and water pump (14)；Wherein, cleaning position (1) is positioned at drinking-water storehouse (2) top；
(1) the internal subsoil water (5) equipped with extracting of cleaning position (1), its top is provided with the water inlet being connected with water pump (14) and rice wine stake mouth (3)；Side, middle and lower part is provided with the first conduit (8) and controllable flow rate valve (6) being connected with storehouse of drinking water (2)；Bottom side is provided with the flush discharge mouth (7) of sand leakage avoiding；
(2) drinking-water storehouse (2) stores the drinking water (10) after removing nitrate, and its top is connected by the first conduit (8) with cleaning position (1), and is provided with bleaching liquid stake mouth (11)；Bottom side is provided with user and takes the mouth of a river (9)；
(3) water pump (14) is for extracting subsoil water from well (13), is connected with well (13) by the 3rd conduit (16), is connected with cleaning position (1) by the second conduit (15)；
Two, utilizing the thickness sand carrier as indigenous microorganism of natural sediment, layer of sand (4) is formed on the bottom being placed in cleaning position；Sand grains footpath in layer of sand (4) is 0.35-2mm, and consumption accounts for the 1/5-1/4 of cleaning position (1) volume；The sand in layer of sand (4) and the indigenous microorganism in subsoil water is utilized to participate in purifying, it is not necessary to additionally microorganisms；
Three, extract subsoil water by water pump (14), directly store full cleaning position (1)；
Four, rice wine adds: property adds rice wine at cleaning position (1) top rice wine stake mouth (3) once a day；Daily water consumption 100L, nitrate nitrogen concentration 30mg/L, rice wine addition is 10-15mL；
Five, during first this device of use, need controllable flow rate valve (6) between temporary close cleaning position (1) and drinking-water storehouse (2) 2-3 days, the most persistently open valve (6) so that the water gravity flow in cleaning position (1) enters drinking-water storehouse (2), and normal flow controls at 50-70mL/min；
Six, bleaching liquid adds: the water storage in drinking-water storehouse (2) is implemented bleaching liquid sterilization, is added by bleaching liquid stake mouth (11) of drinking-water storehouse (2) top；Daily water consumption 100L, bleaching liquid addition is 5-10mL；
Seven, drinking water (10) is taken: drinking water (10) is taken the mouth of a river (9) by drinking-water storehouse (2) bottom user and taken.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510311360.8A CN104860488B (en) | 2015-06-09 | 2015-06-09 | Rural households utilize the method that rice wine oneself removes nitrate in groundwater |
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| CN104860488B true CN104860488B (en) | 2016-09-28 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1133597C (en) * | 1999-02-12 | 2004-01-07 | 北京京润新技术发展有限责任公司 | Method for removing micropollutant nitrate and nitrite from drinking water |
| WO2004031084A1 (en) * | 2002-09-30 | 2004-04-15 | Nippon Steel Chemical Co., Ltd. | Method of removing nitrate nitrogen and device used for the method |
| US7462285B2 (en) * | 2006-04-04 | 2008-12-09 | Wickham Daniel E | Wastewater purification method and apparatus |
| CN101973657B (en) * | 2010-10-27 | 2012-07-25 | 河海大学 | Processing device and processing method for removing nitrate from ground water |
| CN102992543B (en) * | 2012-11-27 | 2014-07-23 | 中国科学院沈阳应用生态研究所 | Method and device for biochemically removing nitrate in drinking water |
| CN103359894B (en) * | 2013-08-06 | 2014-10-15 | 山东建筑大学 | Groundwater microbial denitrification system |
| CN103466809B (en) * | 2013-09-09 | 2016-06-01 | 深圳市深港产学研环保工程技术股份有限公司 | A kind of method repairing groundwater azotate pollution |
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