JPH03254883A - Water purifying treatment through activated carbon adsorption - Google Patents
Water purifying treatment through activated carbon adsorptionInfo
- Publication number
- JPH03254883A JPH03254883A JP5151790A JP5151790A JPH03254883A JP H03254883 A JPH03254883 A JP H03254883A JP 5151790 A JP5151790 A JP 5151790A JP 5151790 A JP5151790 A JP 5151790A JP H03254883 A JPH03254883 A JP H03254883A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- water
- trihalomethane
- treatment
- carbon adsorption
- 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.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 154
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000001179 sorption measurement Methods 0.000 title claims description 49
- 238000011282 treatment Methods 0.000 title abstract description 44
- 238000004062 sedimentation Methods 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- 230000001172 regenerating effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 48
- 230000008569 process Effects 0.000 claims description 26
- 238000000746 purification Methods 0.000 claims description 20
- 230000008929 regeneration Effects 0.000 claims description 17
- 238000011069 regeneration method Methods 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000005660 chlorination reaction Methods 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 abstract description 9
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052801 chlorine Inorganic materials 0.000 abstract description 8
- 239000000460 chlorine Substances 0.000 abstract description 8
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 230000016615 flocculation Effects 0.000 abstract description 3
- 238000005189 flocculation Methods 0.000 abstract description 3
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 230000001954 sterilising effect Effects 0.000 abstract 1
- 238000004659 sterilization and disinfection Methods 0.000 abstract 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 5
- 229910052794 bromium Inorganic materials 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 241000195493 Cryptophyta Species 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000003905 agrochemical Substances 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 231100000315 carcinogenic Toxicity 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は浄水処理方法に関し、更に詳しくは、トリハロ
メタンまたはその生成能物質を含有する水を継続的に浄
化する浄水処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a water purification method, and more particularly to a water purification method for continuously purifying water containing trihalomethane or a substance capable of producing trihalomethane.
水道水として給水するために水浄化処理を行う浄水場に
おいては、特に近年の水源水質の汚濁に対処して安全で
おいしい水を供給するため、高度浄水処理方式を採用し
ている。Water purification plants that purify water in order to supply it as tap water use advanced water purification methods to supply safe and delicious water, especially in response to recent pollution of water sources.
この高度浄水処理方式は、従来から行われていた通常の
凝集沈澱・砂床濾過処理に、更に生物処理、オゾン処理
及び活性炭処理のいずれか、またはそれ等の組合を併せ
て適用することにより、異臭味や、重金属や農薬等の汚
濁物質やトリハロメタン生成能物質を除去するものであ
る。特に、発癌性があるといわれているトリハロメタン
の暫定飲料水基準が提示されたことから、高度浄水処理
方式が多く採用されるようになっている。This advanced water purification treatment method uses biological treatment, ozone treatment, activated carbon treatment, or a combination of these in addition to conventional coagulation sedimentation and sand bed filtration treatment. It removes off-flavors, pollutants such as heavy metals and agricultural chemicals, and substances capable of producing trihalomethane. In particular, with the introduction of interim drinking water standards for trihalomethanes, which are said to be carcinogenic, advanced water purification treatment methods are increasingly being adopted.
上記の高度浄水処理方式のうち、当初、活性炭吸着処理
を組合わせる方式が操作上の簡便さから採用された。こ
の場合、トリハロメタン（以下、ＴＨＭとする。）は、
トリハロメタン生成能物質（以下、ＴＨＭＦＰとする。Among the above-mentioned advanced water purification treatment methods, a method combining activated carbon adsorption treatment was initially adopted due to its operational simplicity. In this case, trihalomethane (hereinafter referred to as THM) is
Substance capable of producing trihalomethane (hereinafter referred to as THMFP).
）含有水を塩素により酸化殺菌する際に生成され、活性
炭吸着で除去される。しかし、ＴＨＭの活性炭吸着は、
５０％以上の除去率が１力月程度しか継続できず、従来
、吸着率低下した活性炭は吸着装置から抜き出し再生工
場に送り、高熱処理により再生して用いていた。この方
法では頻発する再生処理に多大の費用、時間及び労力を
要し、また高価な活性炭の損失、補充も多くなり、経済
的な負担が大きい。しかし、やむをえず現在この方式を
採用している。) It is produced when water containing water is oxidized and sterilized with chlorine, and is removed by activated carbon adsorption. However, activated carbon adsorption of THM
A removal rate of 50% or more can only be maintained for about one month, and in the past, activated carbon with a reduced adsorption rate was extracted from the adsorption device, sent to a regeneration factory, and regenerated by high heat treatment for use. This method requires a great deal of cost, time and labor for frequent regeneration treatments, and also increases loss and replenishment of expensive activated carbon, resulting in a heavy economic burden. However, this method is currently being adopted out of necessity.
また、最近では上記方式の替わりに、例えば塩素処理を
止めたり、前塩素処理に替えて前オゾン処理を行い、Ｔ
ＨＭＦＰのまま活性炭に吸着除去する方式が採用される
ようになっている。この方式は、活性炭のＴＨＭＦＰの
吸着能を２年以上継続し、て３０％以上の除去率で維持
でき、ＴＨＭを基準値以下にすることができる。Recently, instead of the above method, for example, chlorine treatment has been stopped, or pre-ozone treatment has been performed instead of pre-chlorine treatment, and T
A method is now being adopted in which HMFP is adsorbed and removed using activated carbon. This method can maintain the THMFP adsorption ability of activated carbon for more than two years at a removal rate of 30% or more, and can reduce THM to below the standard value.
〔発明が解決しようとする課題］
しかし、上記活性炭ムこよるＴＨＭＦＰ除去方式にも下
記のような問題がある。[Problems to be Solved by the Invention] However, the above THMFP removal method using activated carbon also has the following problems.
即ち、■本来汚濁対策として必要であった前塩素処理を
行わないため、浄水場の沈澱池における汚濁物、有機物
等の除去効果が低下する。また沈澱池壁等への藻類付着
により濾過障害が発生ずるおそれがある。■長期間使用
する結果、活性炭は吸着能を失い、微生物等では処理で
きない重金属や農薬の除去ができなくなり、安全な水の
供給が保障できない。■従って、ブロム系ＴＨＭＦＰの
比率が多い海水の混入した原水中のＴＨＭＦＰを、基準
値以下に処理することは困難となる。That is, (1) since the pre-chlorination treatment which was originally necessary as a pollution control measure is not performed, the effectiveness of removing pollutants, organic matter, etc. in the sedimentation pond of the water purification plant is reduced. In addition, there is a risk that filtration failure may occur due to algae adhesion to the sedimentation tank walls. ■As a result of long-term use, activated carbon loses its adsorption ability, making it impossible to remove heavy metals and pesticides that cannot be treated by microorganisms, and thus making it impossible to guarantee a safe water supply. (2) Therefore, it is difficult to treat THMFP in raw water mixed with seawater containing a high proportion of bromine-based THMFP to below the standard value.
本発明は、活性炭を用いるＴＨＭＦＰ除去の高度浄水処
理方式における上記問題に鑑み、初期の活性炭処理と同
様に塩素処理を行いＴＨＭＦＰをＴＨＭとして、活性炭
によりＴＨＭを吸着除去する方式において、多大な労力
や経費を要することなく活性炭吸着能を長期間連続的に
維持して安定的に浄水処理をする方法を提供することを
目的に鋭意検討した結果、本発明に到達した。In view of the above-mentioned problems in the advanced water purification treatment method for THMFP removal using activated carbon, the present invention has developed a method in which chlorine treatment is performed like the initial activated carbon treatment, THMFP is treated as THM, and THM is adsorbed and removed by activated carbon, which requires a great deal of labor and effort. As a result of extensive research aimed at providing a method for stably purifying water by continuously maintaining activated carbon adsorption capacity for a long period of time without requiring any expense, the present invention was achieved.
本発明によれば、トリハロメタンを含有する被処理水を
活性炭吸着工程を経て浄化すると共に、該活性炭吸着工
程装置内において活性炭を所定量の温水または／及び蒸
気にて洗浄再生して、該活性炭吸着工程として再使用す
ることを特徴とする活性炭吸着による浄水処理方法が提
供される。According to the present invention, the water to be treated containing trihalomethane is purified through an activated carbon adsorption process, and the activated carbon is washed and regenerated with a predetermined amount of hot water and/or steam in the activated carbon adsorption process apparatus to adsorb the activated carbon. A water purification treatment method using activated carbon adsorption is provided, which is characterized in that it can be reused as a process.
また、トリハロメタン生成能物質含有水を、塩素処理工
程、凝集・沈澱工程、濾床濾過工程及び活性炭吸着工程
により順次処理して浄化すると共に、該活性炭吸着工程
において、活性炭充填装置を２以上並列に設置し、一方
は該活性炭吸着工程に他方は所定量の温水または／及び
蒸気にて洗浄再生する洗浄再生工程に供され、その後該
活性炭吸着工程と該洗浄再生工程とを相互に交替してな
ることを特徴とする活性炭吸着による浄水処理方法が提
供される。In addition, water containing trihalomethane-forming substances is sequentially treated and purified through a chlorination process, a coagulation/sedimentation process, a filter bed filtration process, and an activated carbon adsorption process, and in the activated carbon adsorption process, two or more activated carbon filling devices are installed in parallel. one is subjected to the activated carbon adsorption step, the other is subjected to the cleaning regeneration step of washing and regenerating with a predetermined amount of hot water or/and steam, and then the activated carbon adsorption step and the washing regeneration step are alternated. A water purification method using activated carbon adsorption is provided.
本発明は、活性炭本来の吸着能作用により機能するため
、重金属や農薬も除去され、また塩素処理を前処理とし
て採用するため沈澱池における藻類の繁殖がないため凝
集・沈澱効果の低下がなく、水質事故にも対応でき、ブ
ロム系ＴＨＭＦＰから生成するブロム系ＴＨＭの除去も
可能となる。Since the present invention functions based on the adsorption ability inherent to activated carbon, heavy metals and pesticides are also removed, and since chlorination is used as a pretreatment, there is no growth of algae in the sedimentation pond, so there is no reduction in flocculation and sedimentation effects. It can also deal with water quality accidents, and it is also possible to remove bromine-based THM generated from bromine-based THMFP.
以下、本発明について更に詳しく説明する。The present invention will be explained in more detail below.
第１図は、本発明の一実施例の工程を示したフローシー
トである。第１図において、ＴＨＭＦＰを含有する被処
理原水に先ず塩素を注入し、塩素処理して酸化殺菌を行
い同時にＴＨＭＦＰをＴＨＭとする。その後原水中の汚
濁物を凝集・沈澱処理し、更に砂利等の濾床により浮遊
物等を濾床濾過処理した後、活性炭吸着処理をしてＴＨ
Ｍを除去して、給水工程に送入する。FIG. 1 is a flow sheet showing the steps of an embodiment of the present invention. In FIG. 1, chlorine is first injected into raw water to be treated containing THMFP, and chlorine treatment is performed to oxidize and sterilize the water, and at the same time, THMFP is converted into THM. After that, the pollutants in the raw water are coagulated and precipitated, and the suspended solids are filtered through a filter bed made of gravel, etc., and then activated carbon adsorption treatment is applied to TH.
M is removed and sent to the water supply process.
更に、活性炭吸着処理に供した活性炭を定期的に温水ま
たは蒸気洗浄処理することにより、活性炭に吸着保持さ
れているＴＨＭを揮散させ、温水または蒸気中に追い出
し、活性炭の吸着能を常に一定に維持する。また、活性
炭充填装置の上部に蒸気洗浄の場合には排ガス吸着装置
を設け、温水洗浄の場合には排水処理装置を設置して、
脱着したＴＨＭを捕集するのが好ましい。Furthermore, by periodically washing the activated carbon that has been subjected to activated carbon adsorption treatment with hot water or steam, the THM adsorbed and retained on the activated carbon is volatilized and expelled into hot water or steam, thereby maintaining the adsorption capacity of the activated carbon at a constant level. do. In addition, an exhaust gas adsorption device is installed above the activated carbon filling device in the case of steam cleaning, and a wastewater treatment device is installed in the case of hot water cleaning.
Preferably, the desorbed THM is collected.
更にまた、活性炭吸着処理工程に供される活性炭充填装
置を２以上並列に設置し、吸着処理工程と洗浄再生工程
とを交互に交替させるようにして、常に被処理水の活性
炭吸着処理ができるようにするのが好ましい。Furthermore, two or more activated carbon filling devices for the activated carbon adsorption treatment process are installed in parallel, and the adsorption treatment process and the washing and regeneration process are alternately performed, so that the activated carbon adsorption treatment of the water to be treated can always be carried out. It is preferable to
活性炭の洗浄再生処理は、ＴＨＭの吸着除去能を記録し
て低下し始めたら洗浄再生に切り換えてもよく、また原
水処理設備において、その設備の処理量、活性炭処理工
程の容！、原水の汚濁度等により予め一定期間を定めて
定期的に洗浄するようにしてもよい。通常の浄水場設備
では、約１週間に１回の割合で洗浄すればよい。For cleaning and regeneration treatment of activated carbon, the THM adsorption and removal ability may be recorded and switched to cleaning and regeneration when it begins to decline.Also, in raw water treatment equipment, the throughput of the equipment, the capacity of the activated carbon treatment process! , cleaning may be carried out periodically for a predetermined period depending on the degree of contamination of the raw water. Normal water treatment plant equipment only needs to be cleaned about once a week.
本発明において、吸着処理工程に用いた活性炭の洗浄再
生処理は、通常温水或いは蒸気を用いて行うが、温水と
蒸気を併用してもよい。なお、本発明において、温水と
は約８０°Ｃ以上の湯水をいつ。In the present invention, the cleaning and regeneration treatment of the activated carbon used in the adsorption treatment step is usually carried out using hot water or steam, but hot water and steam may be used in combination. In addition, in the present invention, hot water refers to hot water of approximately 80°C or higher.
洗浄再生は、再生する活性炭量、また被処理水の処理量
、汚濁性状、ＴＨＭＩ度等による活性炭の吸着能低下度
等によって、洗浄温水または／及び蒸気量、洗浄時間等
の洗浄再生条件を適宜選択して行えばよい。また、予備
実験等により温水量等の洗浄再生条件を予め所定量に選
択設定して処理するのが好ましい。例えば、通常ＴＨＭ
の吸着能が除去率で３０％以下になった場合で、活性炭
１２当たり約３〜１０！の温水または３〜１０ｆの蒸気
を用いて洗浄することにより吸着能を再生することがで
きる。For cleaning and regeneration, cleaning and regeneration conditions such as the amount of hot water and/or steam, cleaning time, etc. are adjusted appropriately depending on the amount of activated carbon to be regenerated, the amount of treated water to be treated, the pollution properties, the degree of decrease in adsorption capacity of activated carbon due to THMI degree, etc. Just choose and do it. Further, it is preferable to select and set the cleaning regeneration conditions such as the amount of hot water to a predetermined amount in advance through preliminary experiments or the like. For example, usually THM
When the adsorption capacity of the activated carbon is 30% or less in terms of removal rate, it is about 3 to 10 per 12 activated carbons! The adsorption capacity can be regenerated by washing with hot water of 3 to 10 degrees Fahrenheit or steam of 3 to 10 degrees Fahrenheit.
本発明は、ＴＨＭの高温水中での溶解度低下を原理的に
適用したものである。従来、高度浄水処理方式のＴＨＭ
活性炭吸着での再生処理はＴＨＭの吸着能が低下した時
点で再生処理工場に運び、加熱高温再生処理を行ってい
たが、本発明においては、吸着能が低下する前に洗浄再
生を行い常に一定の活性炭本来のＴＨＭの吸着能を保持
すると共に、浄化処理設備における吸着処理工程の活性
炭充填装置内でそのまま再生する。このため、本発明は
浄水処理を安定的且つ効率的に継続して行・うことかで
き、活性炭の損失も少なく活性炭再生費用も軽減される
。The present invention is based on the principle of reducing the solubility of THM in high-temperature water. Conventional advanced water purification treatment THM
In the regeneration process using activated carbon adsorption, once THM adsorption capacity has decreased, the THM is transported to a regeneration processing factory and subjected to heating and high-temperature regeneration treatment, but in the present invention, cleaning and regeneration is performed before the adsorption capacity decreases, so that THM remains constant at all times. The activated carbon retains its original THM adsorption ability, and is regenerated as it is in the activated carbon filling device of the adsorption treatment process in the purification treatment facility. Therefore, according to the present invention, water purification treatment can be carried out stably and efficiently continuously, and the loss of activated carbon is small, and the cost of regenerating activated carbon is also reduced.
以下に、本発明を実施例に基づき詳細に説明する。但し
、本発明は以下の実施例に限定されるものでない。The present invention will be explained in detail below based on examples. However, the present invention is not limited to the following examples.
第２図は、本発明の一実施例のための装置を示す。第２
図において、直径５０ｍφ、高さ１．５ｍのカラム１の
底部に配置した分散板上に活性炭を約１ｍ充填した。充
填した活性炭は、浄水場において塩素処理をした被処理
水を吸着処理に供し、吸着能が３０％以下になったもの
を使用した。FIG. 2 shows an apparatus for one embodiment of the invention. Second
In the figure, about 1 m of activated carbon was packed onto a dispersion plate placed at the bottom of a column 1 having a diameter of 50 mφ and a height of 1.5 m. The filled activated carbon was one that had been subjected to adsorption treatment on chlorinated water at a water purification plant and had an adsorption capacity of 30% or less.
一方、混合器２において水道水６にＴＨＭ成分としクロ
ロホルム試薬７を約３００〜４００ρｐｂとなるように
添加して攪拌混合して試水とした。On the other hand, in the mixer 2, the THM component chloroform reagent 7 was added to the tap water 6 at a concentration of about 300 to 400 ρppb, and the mixture was stirred and mixed to prepare a sample water.
カラム１内に充填した活性炭を、水道水をライン４を経
てカラム１の下部から上向流にて、２０ボ／時で１０分
間通水して水洗浄した。その後、ポンプ３にて試水をラ
イン８を経て４００ｒｒｆ／日で下向流にて１０時間連
続して通水し、処理水はライン９より抜き出した。その
後、カラムｌの入口側ライン８及び出口側ライン９にお
けるＴＨＭ濃度を測定した。その結果は、ライン８の試
水のＴＨＭ濃度は３１０ｐｐｂであり、ライン９の処理
水のＴＨＭ濃度は２７０ρｐｂであった。ＴＨＭの除去
率は１２．９％であった。The activated carbon packed in the column 1 was washed with water by passing tap water through the line 4 from the bottom of the column 1 in an upward flow at 20 volts/hour for 10 minutes. Thereafter, sample water was continuously passed through line 8 by pump 3 in a downward flow at 400 rrf/day for 10 hours, and the treated water was extracted from line 9. Thereafter, the THM concentration in the inlet line 8 and outlet line 9 of column 1 was measured. As a result, the THM concentration of the sample water in line 8 was 310 ppb, and the THM concentration in the treated water in line 9 was 270 pb. The THM removal rate was 12.9%.
次いで、上記の試水処理終了後、上記水洗浄と同様に、
約８０〜９０°Ｃの温水を温水器１０からライン１１を
経て、カラム１の下部から上向流にて、２０ボ／時で３
０分間流通して温水洗浄し活性炭の再生を行った。Next, after the above water test treatment is completed, similar to the above water washing,
Hot water at about 80-90°C is passed from the water heater 10 through the line 11 and from the bottom of the column 1 in an upward flow at 20 volts/hour.
The activated carbon was circulated for 0 minutes and washed with warm water to regenerate the activated carbon.
温水洗浄後、上記と同様に試水をライン８を経て４００
ｒｄ／日で下向流にて１０時間連続して通水し、処理水
はライン９より抜き出した。ライン８及びライン９にお
けるＴＨＭ濃度を測定した。After washing with hot water, the sample water was passed through line 8 to 400 ml as above.
Water was passed continuously in a downward flow for 10 hours at rd/day, and the treated water was extracted from line 9. The THM concentration in line 8 and line 9 was measured.
その結果は、ライン８の試水のＴＨＭ濃度は３５ｏ ｐ
ｐｂであり、ライン９の処理水のＴＨＭＩ度は５２ｐｐ
ｂであった。ＴＨＭの除去率は８５．０％であった。The results showed that the THM concentration in the sample water of line 8 was 35o p.
pb, and the THMI degree of the treated water in line 9 is 52 pp.
It was b. The THM removal rate was 85.0%.
この結果、温水洗浄により活性炭に吸着されたＴＨＭが
、脱着され活性炭の吸着能が再生されＴＨＭの除去が効
果的に行われることが分かる。As a result, it can be seen that THM adsorbed on the activated carbon by hot water washing is desorbed, the adsorption ability of the activated carbon is regenerated, and THM is effectively removed.
本発明は、ＴＨＭＦＰ含有水を塩素処理し、発癌性があ
るといわれるＴＨＭを活性炭で吸着除去する浄水処理方
法で、浄水場設備内にて活性炭の再生処理を効果的に行
い、活性炭の吸着能を常に高く維持して、ＴＨＭＦＰ含
有水を連続的に浄化処理することができる。The present invention is a water purification method in which water containing THMFP is chlorinated and THM, which is said to be carcinogenic, is adsorbed and removed using activated carbon. It is possible to continuously purify THMFP-containing water by maintaining a high value at all times.
更に、本発明の活性炭による水処理は、活性炭本来の吸
着能作用により機能するため、重金属や農薬の除去もで
き、また塩素処理を前処理として採用するため沈澱池に
おける藻類の繁殖がなく凝集・沈澱効果の低下もなく、
水質事故ムこも対応できる。また、ブロム系ＴＨＭＦＰ
から生成するブロム系ＴＨＭの除去も可能となり、長期
的に安定した浄水処理を行うことができ、工業的に極め
て有用である。Furthermore, the water treatment using activated carbon of the present invention functions by the adsorption ability inherent to activated carbon, so heavy metals and agricultural chemicals can be removed.Also, since chlorination is used as a pretreatment, there is no growth of algae in the sedimentation pond, and no flocculation or agglomeration occurs. No decrease in precipitation effect,
We can also respond to water quality incidents. In addition, bromine-based THMFP
It is also possible to remove bromine-based THM generated from the water, and stable water purification treatment can be performed over a long period of time, which is extremely useful industrially.
第１図は本発明の一実施例の工程のフローシートである
。第２図は本発明の一実施例のための実験装置の説明図
である。
ｌ・・・カラム ２・・・混合器３・・・ポンプFIG. 1 is a flow sheet of a process according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of an experimental apparatus for one embodiment of the present invention. l...Column 2...Mixer 3...Pump
Claims (3)
工程を経て浄化すると共に、該活性炭吸着工程装置内に
おいて活性炭を所定量の温水または／及び蒸気にて洗浄
再生して、該活性炭吸着工程として再使用することを特
徴とする活性炭吸着による浄水処理方法。(1) The water to be treated containing trihalomethane is purified through an activated carbon adsorption process, and the activated carbon is washed and regenerated with a predetermined amount of hot water and/or steam in the activated carbon adsorption process equipment to be reused as the activated carbon adsorption process. A water purification method using activated carbon adsorption.
塩素処理してなるものである請求項（１）記載の活性炭
吸着による浄水処理方法。(2) The water purification method by activated carbon adsorption according to claim (1), wherein the water to be treated is obtained by chlorinating water containing a trihalomethane-forming substance.
程、凝集・沈澱工程、濾床濾過工程及び活性炭吸着工程
により順次処理して浄化すると共に、該活性炭吸着工程
において、活性炭充填装置を２以上並列に設置し、一方
は該活性炭吸着工程に他方は所定量の温水または／及び
蒸気にて洗浄再生する洗浄再生工程に供され、その後該
活性炭吸着工程と該洗浄再生工程とを相互に交替してな
ることを特徴とする活性炭吸着による浄水処理方法。(3) Water containing trihalomethane-forming substances is sequentially treated and purified through a chlorination process, a coagulation/sedimentation process, a filter bed filtration process, and an activated carbon adsorption process, and in the activated carbon adsorption process, two or more activated carbon filling devices are installed in parallel. One is subjected to the activated carbon adsorption process, and the other is subjected to a cleaning and regeneration process of cleaning and regenerating with a predetermined amount of hot water or/and steam, and then the activated carbon adsorption process and the cleaning and regeneration process are alternated. A water purification method using activated carbon adsorption, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5151790A JPH03254883A (en) | 1990-03-02 | 1990-03-02 | Water purifying treatment through activated carbon adsorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5151790A JPH03254883A (en) | 1990-03-02 | 1990-03-02 | Water purifying treatment through activated carbon adsorption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03254883A true JPH03254883A (en) | 1991-11-13 |
Family
ID=12889204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5151790A Pending JPH03254883A (en) | 1990-03-02 | 1990-03-02 | Water purifying treatment through activated carbon adsorption |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03254883A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0671249A (en) * | 1992-06-26 | 1994-03-15 | Ebara Infilco Co Ltd | Purification device for city water |
| WO2009016766A1 (en) * | 2007-07-27 | 2009-02-05 | Nippon Oil Corporation | Method of regenerating carbonaceous oil adsorbent |
| US8205755B2 (en) | 2006-03-22 | 2012-06-26 | 3M Innovative Properties Company | Filter media |
-
1990
- 1990-03-02 JP JP5151790A patent/JPH03254883A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0671249A (en) * | 1992-06-26 | 1994-03-15 | Ebara Infilco Co Ltd | Purification device for city water |
| US8205755B2 (en) | 2006-03-22 | 2012-06-26 | 3M Innovative Properties Company | Filter media |
| US8206627B2 (en) | 2006-03-22 | 2012-06-26 | 3M Innovative Properties Company | Systems and methods of making molded composite blocks |
| WO2009016766A1 (en) * | 2007-07-27 | 2009-02-05 | Nippon Oil Corporation | Method of regenerating carbonaceous oil adsorbent |
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