JPS61171597A - Method for purifying water of lake and marsh by aquatic plant - Google Patents
Method for purifying water of lake and marsh by aquatic plantInfo
- Publication number
- JPS61171597A JPS61171597A JP60002217A JP221785A JPS61171597A JP S61171597 A JPS61171597 A JP S61171597A JP 60002217 A JP60002217 A JP 60002217A JP 221785 A JP221785 A JP 221785A JP S61171597 A JPS61171597 A JP S61171597A
- Authority
- JP
- Japan
- Prior art keywords
- water
- lakes
- marshes
- lake
- aquatic plants
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims description 16
- 235000015097 nutrients Nutrition 0.000 claims abstract description 10
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 8
- 238000007664 blowing Methods 0.000 claims abstract description 5
- 239000003344 environmental pollutant Substances 0.000 claims description 15
- 231100000719 pollutant Toxicity 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 abstract description 3
- 238000005276 aerator Methods 0.000 abstract description 2
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000169203 Eichhornia Species 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 244000184734 Pyrus japonica Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000010672 photosynthesis Methods 0.000 description 2
- 241000207965 Acanthaceae Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000339994 Lemna japonica Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000080590 Niso Species 0.000 description 1
- 241001647091 Saxifraga granulata Species 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002861 ventricular Effects 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は水生植物による湖沼の水質浄化方法に関し、特
に簡便な方法により従来方法よシも効率よく水質を浄化
する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for purifying water quality in lakes and marshes using aquatic plants, and particularly to a method for purifying water quality in a simple manner and more efficiently than conventional methods.
（従来の技術）
最近、生活廃水の湖沼への流入により各地の湖沼では富
栄養化が生じ、これかため各湖沼の水質は汚濁の一途を
たどり深刻な問題を生じている。しかして、この湖沼の
水質を浄化するため種々の方法が提案されている、例え
ば水生植物を栽培し、増殖生長した水生植物に水中の栄
養分を吸収させたのち、水生植物を陸上げして水質を浄
化する方法（％公昭５９−４１７８号公報参照）が知ら
れているが、この場合、水中に溶存している栄養塩類は
除去し得たとしても、湖底に沈澱している汚濁物質中に
含まれている栄養塩類の除去につ−ては何らの考慮が払
われていないため、再び汚濁物質よシ栄養塩類が溶出し
、これがため水質の完全浄化は実現出来ず、したがって
水生植物による水質浄化機能に対して十分な評価が行な
われていない憾みがあった。このため水質浄化としては
浚渫或水底の乾燥が行なわれているか これらの方法は
多大の時間と費用を要し、水質浄化の効果についても未
だ十分なものとは云い得ないばかりでなく、大面積の湖
沼については実行不可能な場合がある等の欠点があった
。(Prior Art) Recently, the inflow of domestic wastewater into lakes and marshes has caused eutrophication in lakes and marshes in various places, and as a result, the water quality of each lake has become increasingly polluted, causing serious problems. Various methods have been proposed to purify the water quality of lakes and marshes, such as cultivating aquatic plants, allowing the aquatic plants to absorb nutrients from the water, and then bringing the aquatic plants to land to improve the water quality. There is a known method for purifying water (see Publication No. 59-4178), but in this case, even if the nutrients dissolved in the water can be removed, the pollutants precipitated on the lake bottom are Since no consideration is given to the removal of the nutrient salts contained in the water, pollutants and nutrient salts are leached out again, making it impossible to achieve complete purification of water quality. It was regrettable that the purification function had not been sufficiently evaluated. For this reason, are dredging or drying the bottom of the water being used to purify the water? There were drawbacks such as the fact that it was sometimes impractical for lakes and marshes.
（発明が解決しようとする問題点）
本発明者は上記の欠点を改良すべく水生植物による水質
浄化の機構について更に検討を行った結果、浚渫等の方
法に比して遥かに簡単な方法で、しかも従来行なわれて
いる水性植物による水質浄化の方法よシもすぐれた浄化
方法を見出し、本発明を完成するに至ったのである。(Problems to be Solved by the Invention) In order to improve the above-mentioned drawbacks, the present inventor further investigated the mechanism of water purification using aquatic plants, and found that this method is far simpler than methods such as dredging. Moreover, they have discovered a water purification method that is superior to the conventional water purification method using aqueous plants, and have completed the present invention.
（問題点を解決するための手段）
本発明は湖沼の一部をシートで区切り、その区切り内の
水及び湖底汚濁物を外部と遮断し、該区切シ内において
水生植物を繁茂させた後、空気を吹込みながら、水と汚
濁物とを撹拌して水中に汚濁物を分散及び接触酸化させ
、同時に分解した浮遊物質と、汚濁物に含まれている栄
養塩及び重金属類を水性植物に吸収させて水質を浄化せ
しめることを特徴とする湖沼の水質浄化方法である。(Means for Solving the Problems) The present invention divides a part of a lake with sheets, isolates water and lake bottom pollutants within the division from the outside, and allows aquatic plants to flourish within the division. Stir the water and pollutants while blowing air to disperse and catalytically oxidize the pollutants in the water, and at the same time absorb the decomposed suspended solids and nutrients and heavy metals contained in the pollutants into aquatic plants. This is a method for purifying the water quality of lakes and marshes, which is characterized by purifying the water quality by
しかして、この方法において使用する水生植物とは湖沼
の水中を浮遊、増殖する植物で、例えばホティアオイ、
アオウキグサ、シダ、オオクサ、アリノトウグサ、ヒル
モジ口、マツモ、オオカナダモ、シズユキノシタ、イバ
ラモ、アミミド口、クロモ等である。The aquatic plants used in this method are plants that float and multiply in the water of lakes, such as water hyacinth,
These include Lemna japonica, Fern, Acanthus japonica, Aruno japonica, Hirumojiguchi, Matsumo, Oukana, Saxifrage, Ibaramo, Amimidoguchi, Kuromo, etc.
これらの水生植物による水質浄化機能をみるに、水生植
物の葉や茎から大気中の酸素は光合成の産物である酸素
を根糸に転移し、根糸の周囲を好気状態に保ち好気性の
細菌や藻類や小動物の活動を可能にしており、他方、水
中の炭酸ガスは光合成のため水生植物に摂取され、その
部分の水のｐＨは上昇する。つまり、これら水生植物に
おいては水面付近の葉や茎は好気状態にあるが、それよ
）下の水底までは嫌気状態にあることが多く、結果とし
て硝化・脱室に都合のより環境が形成されている。この
ように根糸や茎には微生物が付着し生物膜を作シＦ＃全
形成してＢＯＤ、 ８８ および窒素の除去とリン１重
金属その他の有機物の摂取により水生植物によ′１！て
水質は浄化される。Looking at the water purification function of these aquatic plants, we can see that atmospheric oxygen from the leaves and stems of aquatic plants transfers oxygen, a product of photosynthesis, to the root threads, keeping the area around the root threads in an aerobic state. It enables the activities of bacteria, algae, and small animals, and on the other hand, carbon dioxide gas in the water is taken up by aquatic plants for photosynthesis, increasing the pH of the water in that area. In other words, in these aquatic plants, the leaves and stems near the water surface are in an aerobic state, but the water bottom below is often in an anaerobic state, resulting in a more favorable environment for nitrification and ventricular release. has been done. In this way, microorganisms attach to the root threads and stems and form biofilms, which are then used to improve aquatic plants by removing BOD, 88 and nitrogen, and ingesting phosphorus, heavy metals, and other organic matter. The water quality is purified.
ところで水生植物による水処理は通常の生物膜による水
処理に比して滞留時間が長いため通常の水処理では分解
されない有機物も水生植物により摂取されることも多い
が、反面、通常の水処理のような曝気操作がないため滞
留時間が長くても酸素不足を生じ、これがために水生植
物に摂取されないＢＯＤ、 ８８． Ｕン、重金属、そ
の他の有機物は固形物（粗状態栄養塩化）として沈澱し
、汚濁物として底部を形成する。By the way, water treatment using aquatic plants has a longer retention time than water treatment using normal biofilms, so organic matter that cannot be decomposed by normal water treatment is often ingested by aquatic plants. 88. BOD is not ingested by aquatic plants due to lack of oxygen even if the residence time is long due to lack of aeration operations. U, heavy metals, and other organic substances precipitate as solids (crude nutrient salts) and form the bottom as pollutants.
しかして、本発明においては、空気を吹込み乍ら撹拌し
てこの汚濁物を水中に分散させ、同時に接触酸化させ、
浮遊物質として栄養塩及び重金属と共に水生植物に吸収
せしめて水質を浄化するものである。Therefore, in the present invention, this pollutant is dispersed in water by stirring while blowing air, and at the same time catalytic oxidation is carried out.
It purifies water by being absorbed by aquatic plants as suspended solids along with nutrients and heavy metals.
次に本発明の方法により空気を吹込みながら汚濁物中の
各成分の水生植物による除去率を測定した結果を示す。Next, the results of measuring the removal rate of each component in pollutants by aquatic plants while blowing air according to the method of the present invention are shown.
なお、水生植物は被度１００チで７２０〜２５００．９
部ｍ’（乾重量）で存在させ、滞留期間は１５日間であ
る。In addition, aquatic plants have a coverage of 720 to 2500.9 cm at a coverage of 100 cm.
m' (dry weight) and the residence period is 15 days.
ＢＯＤ除去 冬期を除き、１００に９／ｈａ・日で除
去率は約７０％、ＢＯＤ負荷が５６０ ｋｇ／ｈａ・日
取下であれば悪臭は発生しな
かった。曝気を十分に行えば９０％
除去も可能である。したがって１０
■４以下まで浄化することは可能
Ｔ８８除去 除去率は７０チを越える。したがって、
１０■４以下にすることは可
能
ＴＮ除去 ６ｋｇ／ｈａ−日〜１１ｋｇ／ｈａ・日で
除去率７０チ ５１以下にすることは可
能
リン除去 ２に９７ｈａ・日 除去率７０％０．２〜
４ Ｍ９／ｌ が得られる
重金属 Ｃｄ平均吸収ｉｉ １．２４〜１．４６＃
／背／Ｊ’／
ｐａ ｔｔ １０．５〜日噌１７／ｌｒｉ’Ｈ
ｇ Ｏ，７７〜１．７０１ｖ′Ｉｎ″ホテイ
アオイの吸収率は次の如し
Ｃｄ ６．１０〜４３．３５％Ｐｂ
１６．９４〜９９．４％Ｈｇ １４．
３３〜７０．１０％本発明の具体例を図示して説明する
。BOD removal Excluding the winter season, the removal rate was approximately 70% at 9 in 100/ha/day, and no odor was generated if the BOD load was 560 kg/ha/day. 90% removal is possible with sufficient aeration. Therefore, it is possible to purify T88 to 10 ■4 or less.The removal rate exceeds 70 T88. therefore,
It is possible to reduce the amount to less than 10■4 TN removal: 6 kg/ha-day to 11 kg/ha-day with a removal rate of 70 cm Phosphorus removal: 2 to 97 ha-day Removal rate: 70% 0.2-
Heavy metal Cd average absorption ii 1.24 to 1.46 # that yields 4 M9/l
/Back/J'/pattt 10.5~Niso 17/lri'H
g O, 77~1.701 v'In'' The absorption rate of water hyacinth is as follows: Cd 6.10~43.35% Pb
16.94-99.4%Hg 14.
33 to 70.10% Specific examples of the present invention will be explained with reference to the drawings.
図面に示すように、湖沼の１部をその底部に到るまでシ
ート１を張りめぐらして区切り、その区切り内に水中ポ
ンプとエアレータ−とを組み合せた車台５を移動させて
なからエアーを吹込み湖底の汚濁物を撹拌して水中に分
散・接触酸化させ、分解した浮遊物質、栄養塩及び重金
属類を水生植物に吸収浄化せしめ、浄化し終ったら、次
にシートの位置を移動して逐次湖沼を水生植物によって
浄化する。As shown in the drawing, a part of the lake is divided by stretching the sheet 1 all the way to the bottom of the lake, and the chassis 5, which is a combination of a submersible pump and an aerator, is moved within the division and air is blown into the area. The pollutants on the lake bottom are stirred and dispersed in the water, oxidized by contact, and the decomposed suspended solids, nutrients, and heavy metals are absorbed and purified by aquatic plants. Once purification is complete, the next step is to move the position of the sheet and sequentially clean the lake. is purified by aquatic plants.
（本発明の効果）
本発明は水生植物によって湖沼の水質を順次浄化するの
であるが、その際空気を吹込み湖底に沈澱している汚濁
物を水分に分散、接触酸化により分解して浮遊物質とし
て吸収せしめるため従来の方法、例えば特公昭５９−４
１７８号公報記載の方法に比してより完全に浄化できる
等の効果を奏する。(Effects of the present invention) The present invention sequentially purifies the water quality of lakes and marshes using aquatic plants. At this time, air is blown into the lake to disperse the pollutants that have settled on the lake bottom into water, and the suspended substances are decomposed by catalytic oxidation. In order to absorb the
Compared to the method described in Japanese Patent No. 178, this method has effects such as more complete purification.
第１図は本発明にか＼る水質浄化方法の概略図を示し、
第２図はその断面図を示す。
１ シート、２・・・水生植物、３・・・支柱、４・・
ロープ、５−・水車FIG. 1 shows a schematic diagram of the water purification method according to the present invention,
FIG. 2 shows its sectional view. 1 sheet, 2... aquatic plant, 3... support, 4...
Rope, 5-・Water wheel
Claims (1)
び湖底の汚濁物を外部と遮断し、該区切り内において水
生植物を繁茂させた後空気を吹込みながら水と汚濁物と
を撹拌して汚濁物を水中に分散及び接触酸化させ、同時
に分解した浮遊物質と、汚濁物に含まれている栄養塩及
び重金属を水生植物に吸収させて水質を浄化せしめるこ
とを特徴とする湖沼の水質浄化方法。A part of the lake is divided by a sheet, the water within the division and the pollutants on the lake bottom are isolated from the outside, and after aquatic plants are grown within the division, the water and pollutants are stirred while blowing air. A method for purifying water in lakes and marshes, characterized by dispersing and catalytically oxidizing pollutants in water, and at the same time purifying the water by allowing aquatic plants to absorb the decomposed suspended solids and nutrients and heavy metals contained in the pollutants. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60002217A JPS61171597A (en) | 1985-01-11 | 1985-01-11 | Method for purifying water of lake and marsh by aquatic plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60002217A JPS61171597A (en) | 1985-01-11 | 1985-01-11 | Method for purifying water of lake and marsh by aquatic plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61171597A true JPS61171597A (en) | 1986-08-02 |
| JPH025159B2 JPH025159B2 (en) | 1990-01-31 |
Family
ID=11523189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60002217A Granted JPS61171597A (en) | 1985-01-11 | 1985-01-11 | Method for purifying water of lake and marsh by aquatic plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61171597A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63315195A (en) * | 1987-06-18 | 1988-12-22 | Kaiyo Kogyo Kk | Partial water purification method in continuous water area |
| JPH01239215A (en) * | 1988-03-17 | 1989-09-25 | Hitomi Shimada | Method for activating contaminated water area curtain for ship passage and sheet for prevention of sludge |
| JPH0283093A (en) * | 1988-09-20 | 1990-03-23 | Fumio Onuki | Purification of industrial waste water utilizing single cell chlorophyceae of genus chlamydomonas |
| JPH0283094A (en) * | 1988-09-20 | 1990-03-23 | Fumio Onuki | Method for removing contaminants from sewage containing hydrogen sulfide, methane gas, organic compound and inorganic compound by utilizing single cell chlorophyceae of genus chlamydomonas |
| JPH0283095A (en) * | 1988-09-20 | 1990-03-23 | Fumio Onuki | Method for removing contaminants in excretion or sewage by utilizing single cell chlorophyceae of genus chlamydomonas to obtain drinking water |
| JPH02119996A (en) * | 1988-09-20 | 1990-05-08 | Fumio Onuki | Method for purifying domestic waste water with unicellular green alga belonging to chlamydomonas genus |
| US5011604A (en) * | 1990-02-07 | 1991-04-30 | Wilde Edward W | Use of microalgae to remove pollutants from power plant discharges |
| JPH03154698A (en) * | 1989-11-12 | 1991-07-02 | Toda Constr Co Ltd | Method for improving dissolved oxygen amount in limited water area and fish shelter structure using the same |
| JP2007006819A (en) * | 2005-07-01 | 2007-01-18 | Public Works Research Institute | Method for regenerating and restoring submerged plant in shallow lake or marsh |
| CN1303014C (en) * | 2004-11-09 | 2007-03-07 | 中山大学 | Method for treating soil and aquatic lead, zinc, cadmium pollution by cone south mustard |
| JP2018121582A (en) * | 2017-02-01 | 2018-08-09 | ルーテック株式会社 | Method for inhibiting growth of filamentous algae that coexist with water-immersed plants |
-
1985
- 1985-01-11 JP JP60002217A patent/JPS61171597A/en active Granted
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63315195A (en) * | 1987-06-18 | 1988-12-22 | Kaiyo Kogyo Kk | Partial water purification method in continuous water area |
| JPH01239215A (en) * | 1988-03-17 | 1989-09-25 | Hitomi Shimada | Method for activating contaminated water area curtain for ship passage and sheet for prevention of sludge |
| JPH0283093A (en) * | 1988-09-20 | 1990-03-23 | Fumio Onuki | Purification of industrial waste water utilizing single cell chlorophyceae of genus chlamydomonas |
| JPH0283094A (en) * | 1988-09-20 | 1990-03-23 | Fumio Onuki | Method for removing contaminants from sewage containing hydrogen sulfide, methane gas, organic compound and inorganic compound by utilizing single cell chlorophyceae of genus chlamydomonas |
| JPH0283095A (en) * | 1988-09-20 | 1990-03-23 | Fumio Onuki | Method for removing contaminants in excretion or sewage by utilizing single cell chlorophyceae of genus chlamydomonas to obtain drinking water |
| JPH02119996A (en) * | 1988-09-20 | 1990-05-08 | Fumio Onuki | Method for purifying domestic waste water with unicellular green alga belonging to chlamydomonas genus |
| JPH03154698A (en) * | 1989-11-12 | 1991-07-02 | Toda Constr Co Ltd | Method for improving dissolved oxygen amount in limited water area and fish shelter structure using the same |
| US5011604A (en) * | 1990-02-07 | 1991-04-30 | Wilde Edward W | Use of microalgae to remove pollutants from power plant discharges |
| CN1303014C (en) * | 2004-11-09 | 2007-03-07 | 中山大学 | Method for treating soil and aquatic lead, zinc, cadmium pollution by cone south mustard |
| JP2007006819A (en) * | 2005-07-01 | 2007-01-18 | Public Works Research Institute | Method for regenerating and restoring submerged plant in shallow lake or marsh |
| JP2018121582A (en) * | 2017-02-01 | 2018-08-09 | ルーテック株式会社 | Method for inhibiting growth of filamentous algae that coexist with water-immersed plants |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH025159B2 (en) | 1990-01-31 |
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