JP2003181457A - Device for treating turbid water in coal storage yard and treatment method of turbid water in coal storage yard - Google Patents
Device for treating turbid water in coal storage yard and treatment method of turbid water in coal storage yardInfo
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- JP2003181457A JP2003181457A JP2001387416A JP2001387416A JP2003181457A JP 2003181457 A JP2003181457 A JP 2003181457A JP 2001387416 A JP2001387416 A JP 2001387416A JP 2001387416 A JP2001387416 A JP 2001387416A JP 2003181457 A JP2003181457 A JP 2003181457A
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- Prior art keywords
- water
- turbid water
- coal
- purifying
- turbid
- 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.)
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- Treatment Of Sludge (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、石炭火力発電所お
よび製鉄所等の石炭保管場所（貯炭場）から排出される
濁水の浄化装置および浄化方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purifying device and a purifying method for muddy water discharged from a coal storage place (coal storage place) such as a coal-fired power plant and an iron mill.
【０００２】[0002]
【従来の技術】石炭火力発電所や製鉄所等では、大量の
石炭を屋外の石炭保管場所である貯炭場に野積みして保
管する。この保管中は、石炭微粒子の飛散や石炭の自然
発火を防止するために、保管している石炭に散水する。
これに伴い散水した水は石炭の微細粒子を含んだ濁水と
なって貯炭場から排出される。また、貯炭場は屋外に位
置するため降雨や降雪等によっても同様に濁水が貯炭場
から排出される。2. Description of the Related Art In a coal-fired power plant, a steel mill, etc., a large amount of coal is loaded and stored in a coal storage yard, which is an outdoor coal storage place. During this storage, water is sprayed on the stored coal in order to prevent scattering of fine coal particles and spontaneous ignition of the coal.
Along with this, the water sprinkled becomes muddy water containing fine particles of coal and is discharged from the coal storage yard. In addition, since the coal storage yard is located outdoors, turbid water is also discharged from the coal storage yard due to rain or snow.
【０００３】通常、これら貯炭場から排出される濁水は
石炭微細粒子を除去することで浄化が行われ、公共河川
や海洋に放流される。[0003] Usually, the turbid water discharged from these coal storage stations is purified by removing fine coal particles, and is discharged to public rivers and the ocean.
【０００４】現在、貯炭場から排出される濁水の浄化法
としては、凝集剤による凝集沈澱処理法が一般的に採用
されている。この凝集沈澱処理法は、凝集剤の化学反応
によって水中の石炭微粒子を互いに結合させ、粒子を粗
大化させて、沈降速度を速め、沈降分離によって沈殿し
た石炭の汚泥を分離する処理法である。At present, a coagulating sedimentation method using a coagulant is generally adopted as a method for purifying turbid water discharged from a coal storage yard. This coagulation-sedimentation treatment method is a treatment method in which coal fine particles in water are bound to each other by a chemical reaction of a coagulant to coarsen the particles to accelerate the sedimentation speed and to separate the sludge of coal that has been sedimented by sedimentation separation.
【０００５】例えば、図２に示す濁水浄化装置により貯
炭場から排出される濁水の処理が行われている。図２に
示すように、貯炭場から排出される濁水（貯炭場濁水）
ａは、原水導入ライン１により、まず中和槽２に流入
し、ここでアルカリ調整剤ｂや酸調整剤ｃが添加され、
攪拌機３により攪拌されて、貯炭場濁水ａのｐＨが調整
される。ｐＨの調整は後段の凝集剤ｄによる凝集反応を
効率よく行わせるために実施される。For example, the turbid water purifying apparatus shown in FIG. 2 is used to treat the turbid water discharged from the coal storage yard. As shown in Fig. 2, muddy water discharged from the coal stockyard (muddy water of the coal stockyard)
a first flows into the neutralization tank 2 through the raw water introduction line 1, where the alkali modifier b and the acid modifier c are added,
The pH of the coal storage muddy water a is adjusted by being stirred by the stirrer 3. The pH is adjusted so that the aggregating reaction with the aggregating agent d in the subsequent stage can be efficiently performed.
【０００６】ｐＨが調整された貯炭場濁水ａは、次に反
応槽４に案内されて、反応槽４に流入する。反応槽４で
は流入された濁水ａに凝集剤ｄが注入され、攪拌機５に
よって撹拌されて混合される。その後、凝集剤ｄを注入
された貯炭場濁水ａは、凝集槽６に案内される。凝集槽
６では、攪拌機７にて攪拌され、凝集剤ｄにより、ある
いは凝集剤ｄとこれに追加して注入される凝集助剤ｅに
よって、貯炭場濁水ａ中の微細粒子が凝集して粗大化さ
れる。[0006] The turbid water a of the coal storage, the pH of which is adjusted, is then guided to the reaction tank 4 and flows into the reaction tank 4. In the reaction tank 4, the coagulant d is injected into the turbid water a that has flowed in, and is agitated by the agitator 5 to be mixed. Then, the coal storage muddy water a into which the coagulant d has been injected is guided to the coagulation tank 6. In the aggregating tank 6, the fine particles in the coal storage turbid water a are aggregated and coarsened by the agitation agent 7 and by the aggregating agent d, or by the aggregating agent d and the aggregating auxiliary agent e additionally added thereto. To be done.
【０００７】貯炭場濁水ａの凝集反応が完了すると、貯
炭場濁水ａは、沈殿槽８に導入され、重力沈降分離によ
って凝集沈降した石炭微粒子の汚泥と上澄み水に分離さ
れる。分離された上澄み水は、浄化処理水ｆとして公共
河川、海洋に放流される。[0007] When the coagulation reaction of the coal storage turbid water a is completed, the coal storage turbid water a is introduced into the settling tank 8 and separated into a sludge of coal particles that have been coagulated and settled by gravity settling and supernatant water. The separated supernatant water is discharged to the public rivers and the ocean as purified treated water f.
【０００８】一方、沈殿槽８において沈降分離された石
炭微粒子の汚泥（沈殿槽汚泥）ｇは、汚泥掻き寄せ機９
により掻き寄せられ、沈殿槽８の底部より汚泥引抜きポ
ンプ１１を介して沈殿槽汚泥引抜きライン１２により排
出される。On the other hand, the sludge g of the coal fine particles (sedimentation tank sludge) g separated and settled in the settling tank 8 is sludge scraper 9
And is discharged from the bottom of the settling tank 8 through the sludge drawing pump 11 through the settling tank sludge drawing line 12.
【０００９】排出された沈殿槽汚泥ｇは、汚泥濃縮槽１
４においてさらに濃度凝集、および重力沈降作用によっ
て濃縮され、より高濃度の高濃度汚泥ｈとなる。この高
濃度汚泥ｈは、汚泥引抜きポンプ１６を介して汚泥濃縮
槽１４の底部より高濃度汚泥引抜きライン１７により排
出され、汚泥脱水機１８によって脱水されて、さらに含
水率の低い脱水汚泥ｊとなる。脱水汚泥ｊは固形産業廃
棄物として処理される。The discharged settling tank sludge g is the sludge thickening tank 1
In 4, the concentration and concentration are further concentrated by gravity settling action to obtain a higher concentration of high concentration sludge h. The high-concentration sludge h is discharged from the bottom of the sludge thickening tank 14 through the high-concentration sludge withdrawing line 17 via the sludge withdrawing pump 16, and is dehydrated with a sludge dewatering machine 18 to be dehydrated sludge j having a lower water content. . The dehydrated sludge j is treated as solid industrial waste.
【００１０】汚泥濃縮槽１４における上澄み水である汚
泥濃縮槽越流水ｉ、および汚泥脱水機１８によって固形
分と分離された分離水（脱水機分離水）ｋは、それぞ
れ、越流水導出ライン１５、脱水機分離水導出ライン１
９によって、最初の原水受入槽である中和槽２に導入さ
れ、再度浄化処理される。The sludge thickening tank overflow water i, which is the supernatant water in the sludge thickening tank 14, and the separated water (dewaterer separated water) k separated from the solids by the sludge dehydrator 18 are respectively the overflow water discharge line 15, Dewatering machine separation water derivation line 1
9 is introduced into the neutralization tank 2 which is the first raw water receiving tank, and is purified again.
【００１１】[0011]
【発明が解決しようとする課題】（濁水浄化装置の複雑
化）従来の貯炭場濁水の浄化装置においては、前述のよ
うに、浄化処理が多くの処理工程に別れている多段処理
であるため、各処理工程毎の処理装置が必要になる。し
たがって、処理装置および制御すべき機器類も多く、制
御が複雑となり、かつ故障の可能性も高まる。(Complexity of Turbid Water Purifying Device) In the conventional purifying device for purifying turbid water in a coal stockyard, as described above, the purifying treatment is a multi-stage treatment which is divided into many treatment steps. A processing device is required for each processing step. Therefore, there are many processing devices and devices to be controlled, the control becomes complicated, and the possibility of failure increases.
【００１２】また、薬剤による凝集処理のためにｐＨ調
整されて浄化された処理水のｐＨ値が放流規制値を外れ
る場合は、放流する前に浄化装置とは別の中和装置を浄
化装置の後段に設け、放流可能なｐＨ値まで調整する必
要がある。このような場合、さらに処理装置および制御
機器類の増加を招く。If the pH value of the treated water that has been purified by adjusting the pH for the coagulation treatment with the chemicals is out of the discharge regulation value, a neutralizing device other than the purifying device is installed in the purifying device before discharging. It is necessary to adjust the pH value so that it can be released at a later stage. In such a case, the number of processing devices and control devices is further increased.
【００１３】（薬剤害の可能性）従来の貯炭場濁水の浄
化装置では、凝集処理を行うためのｐＨ調整剤、凝集
剤、凝集助剤、放流中和のためのｐＨ調整剤など、多
種、多量の薬剤を使用する。(Possibility of chemical damage) In conventional coal storage turbid water purification devices, various types of pH adjusting agents such as a coagulation treatment, a coagulant, a coagulant aid, and a pH adjusting agent for neutralization of effluent are used. Use large amounts of drugs.
【００１４】現時点については、これら薬剤は、最終的
な放流においてその毒性は指摘されていないが、今後の
分析、研究によっては、人の健康面、海洋資源の保護、
環境保護の側面から毒性や障害が指摘されて薬剤害とな
り得る可能性がある。[0014] At present, the toxicity of these drugs has not been pointed out in the final release, but depending on future analysis and research, human health, protection of marine resources,
There is a possibility that toxicity or injury may be pointed out from the aspect of environmental protection and cause drug damage.
【００１５】（放流水、脱水汚泥の再利用への障害）従
来の貯炭場濁水の浄化装置では、多種多量の薬剤を使用
しており、浄化処理後の放流水には現時点における公害
防止規制上の成分が規制値以上には含まれていないとい
うだけであり、他の薬剤成分は多量に含まれている可能
性がある。このため、放流水を、例えば、濁水浄化装置
のある施設（発電所や製鉄所等）の水源として再使用す
るためには、改めて水資源としての浄化処理を行う必要
があり、濁水浄化装置によって浄化処理された放流水が
そのまま再利用されることは少ない。(Obstacles to Reuse of Discharged Water and Dewatered Sludge) A large amount of various chemicals are used in the conventional purification equipment for muddy water in a coal storage yard, and the discharged water after purification treatment is subject to pollution prevention regulations at the present time. It is merely that the component of (4) is not contained above the regulation value, and other drug components may be contained in a large amount. For this reason, in order to reuse the discharged water as a water source for facilities with a turbid water purification device (such as a power plant or a steel plant), it is necessary to perform purification treatment as a water resource again. The treated effluent is rarely reused as it is.
【００１６】また、固形物として回収される石炭微粒子
の脱水汚泥も薬剤成分を含んでいるため、燃料として再
利用されることはなく、一般の固形廃棄物として処分さ
れる。Further, the dewatered sludge of fine coal particles, which is recovered as a solid, also contains a chemical component, so that it is not reused as a fuel and is disposed of as a general solid waste.
【００１７】（凝集フロックのキャリーオーバ）従来の
貯炭場濁水の浄化装置では、沈殿分離による浄化である
ため、処理水量が急激に増加すると、凝集した石炭微粒
子のフロックが沈降する前に濁水浄化系外に越流し、流
出する。このため、常に貯炭場濁水の入水量を監視し、
かつ制限する必要がある。(Carryover of flocculated flocs) In the conventional purifying apparatus for purifying turbid water in a coal storage yard, when the amount of treated water is rapidly increased, flocculation of flocculated coal particles occurs before the flocculation of flocculated coal particles occurs. It overflows and flows out. For this reason, the amount of turbid water entering the coal storage is constantly monitored,
And it needs to be restricted.
【００１８】本発明は、上述の事情を考慮してなされた
もので、処理装置の構成が簡単で制御すべき機器類も少
なく、運転がし易い貯炭場濁水の浄化装置および浄化方
法を提供することを目的とする。The present invention has been made in consideration of the above circumstances, and provides a purifying device and a purifying method for a coal yard turbid water, which has a simple processing device, a small number of devices to be controlled, and is easy to operate. The purpose is to
【００１９】また、本発明は、薬剤成分が混入する危険
性がなく、しかも資源として有効再利用が可能な浄化処
理水および汚濁分を貯炭場濁水から得ることができる貯
炭場濁水の浄化装置および浄化方法を提供することを目
的とする。Further, the present invention is directed to a purification apparatus for purifying treated water and polluted water from a coal storage station, which is capable of obtaining purified treated water and pollutants which can be effectively reused as resources without risk of contamination of chemical components. The purpose is to provide a purification method.
【００２０】さらに、本発明は、貯炭場濁水の処理水量
の急激な増加に対しても良好に浄化処理することができ
る貯炭場濁水の浄化装置および浄化方法を提供すること
を目的とする。A further object of the present invention is to provide a purifying apparatus and a purifying method for purifying turbid water in a coal storage yard, which can satisfactorily purify the treated turbid water in the coal yard.
【００２１】[0021]
【課題を解決するための手段】本発明に係る貯炭場濁水
浄化装置は、上述した課題を解決するために、請求項１
に記載したように、石炭を保管する貯炭場から排出され
る濁水を浄化する濁水浄化装置において、上記濁水を電
解により浄化する電解槽を有するものである。In order to solve the above-mentioned problems, a coal stockyard turbid water purification device according to the present invention is defined by the claims 1
As described above, in a turbid water purification device for purifying turbid water discharged from a coal storage yard for storing coal, the turbid water purifying device has an electrolytic cell for purifying the turbid water by electrolysis.
【００２２】また、上述した課題を解決するために、本
発明に係る貯炭場濁水浄化装置は、請求項２に記載した
ように、前記濁水浄化装置は電解槽で濁水を電解により
浄化して除去される汚濁粒子からなる汚濁分を脱水処理
する脱水装置を備えたものであり、さらに、請求項３に
記載したように、前記濁水浄化装置は電解槽で濁水を電
解により浄化して除去される汚濁粒子からなる汚濁分を
濃縮する濃縮装置と、この濃縮装置で得られた高濃度の
汚濁分を脱水する脱水装置を備えたものであり、さらま
た、請求項４に記載したように、前記濁水浄化装置は電
解槽で濁水を電解により浄化して得られる電解浄化水を
濾過する濾過装置を備えたものである。In order to solve the above-mentioned problems, the muddy water purifying apparatus according to the present invention, as set forth in claim 2, is characterized in that the muddy water purifying apparatus purifies and removes muddy water by electrolysis in an electrolytic tank. The turbid water purifying device purifies and removes turbid water by electrolysis in an electrolysis tank, as described in claim 3. A concentrator for concentrating the pollutant consisting of pollutant particles, and a dehydrator for dehydrating the high-concentration pollutant obtained by this concentrator are provided, and further, as described in claim 4, The turbid water purification device is equipped with a filtering device for filtering electrolytic purified water obtained by purifying turbid water by electrolysis in an electrolytic cell.
【００２３】また、上述した課題を解決するために、本
発明に係る貯炭場濁水浄化装置は、請求項５に記載した
ように、前記濁水処理装置は、電解浄化水を濾過する濾
過装置で除去された汚濁粒子からなる汚濁分を脱水する
脱水装置を有するものであり、さらに、請求項６に記載
したように、前記濁水浄化装置は、濁水を浄化して得ら
れる処理水に薬剤成分を溶解させる危険性の少ない材料
で電解槽を形成したものである。In order to solve the above-mentioned problems, the turbid water purification apparatus of a coal stock yard according to the present invention has a feature that, as described in claim 5, the turbid water treatment apparatus is removed by a filtration device for filtering electrolytically purified water. It has a dehydrating device for dehydrating the pollutant consisting of the generated pollutant particles. Further, as described in claim 6, the turbid water purification device dissolves a chemical component in treated water obtained by purifying turbid water. The electrolytic cell is formed of a material that has a low risk of causing it.
【００２４】本発明に係る貯炭場濁水浄化方法は、上述
した課題を解決するために、請求項７に記載したよう
に、石炭を保管する貯炭場から排出される濁水を処理薬
剤の不存在下で浄化処理し、濁水から汚濁粒子の除去さ
れた処理水を得る方法である。In order to solve the above-mentioned problems, the method for purifying turbid water in a coal storage yard according to the present invention, as set forth in claim 7, treats turbid water discharged from a coal yard storing coal in the absence of a treatment chemical. Is a method for obtaining treated water from which polluted particles have been removed from the turbid water.
【００２５】また、上述した課題を解決するために、本
発明に係る貯炭場濁水浄化方法は、請求項８に記載した
ように、前記濁水の浄化処理を、電解槽の電極内に電圧
を印加させる電解処理により行う方法であり、さらに、
請求項９に記載したように、前記濁水の浄化処理を、濾
過処理により行う方法であり、さらにまた、請求項１０
に記載したように、前記濁水を電解して汚濁濃度の低減
された電解浄化水と汚濁粒子からなる汚濁分とに分離
し、分離された電解浄化水を濾過して浄化された処理水
を得る方法である。In order to solve the above-mentioned problems, the method for purifying turbid water in a coal stockyard according to the present invention, as described in claim 8, applies the turbid water purification treatment by applying a voltage to the electrode of the electrolytic cell. It is a method of performing an electrolytic treatment to
A method of performing the purification treatment of the turbid water by a filtration treatment as described in claim 9, and further,
As described above, the turbid water is electrolyzed to separate it into electrolyzed purified water having a reduced pollutant concentration and a pollutant composed of pollutant particles, and the separated electrolyzed purified water is filtered to obtain purified treated water. Is the way.
【００２６】さらに、上述した課題を解決するために、
本発明に係る貯炭場濁水浄化方法は、請求項１１に記載
したように、前記濁水を浄化処理して得られた処理水を
水資源として再利用する方法であり、さらにまた、請求
項１２に記載したように、前記濁水を浄化処理して分離
された汚濁粒子からなる汚濁分を脱水処理する方法であ
る。Further, in order to solve the above-mentioned problems,
The method for purifying turbid water of a coal storage yard according to the present invention is a method of reusing treated water obtained by purifying the turbid water as a water resource, as described in claim 11, and further, in claim 12. As described above, it is a method of purifying the turbid water to dehydrate the polluted particles composed of the separated pollutant particles.
【００２７】また、上述した課題を解決するために、本
発明に係る貯炭場濁水浄化方法は、請求項１３に記載し
たように、前記濁水を浄化処理して分離された汚濁粒子
からなる汚濁分を脱水処理し、脱水された汚濁分を石炭
源として再利用する方法であり、さらに、請求項１４に
記載したように、前記濁水の処理水量が急激に増加した
場合、濾過処理における濾過圧力を高めに調整して、ま
たは濾過体の洗浄回数を多くして貯炭場濁水の処理を行
う方法である。In order to solve the above-mentioned problems, the method for purifying turbid water in a coal stockyard according to the present invention, as set forth in claim 13, is a pollutant comprising pollutant particles separated by purifying the turbid water. Is a method of reusing the dehydrated pollutant as a coal source, and further, when the treated water amount of the muddy water is rapidly increased, the filtration pressure in the filtration treatment is increased. This is a method for treating muddy water in the coal storage yard by adjusting it to a higher value or increasing the number of times the filter body is washed.
【００２８】[0028]
【発明の実施の形態】本発明に係る貯炭場濁水浄化装置
および浄化方法は、石炭を保管する貯炭場から排出され
る貯炭場濁水を、薬剤を使用せずに浄化処理して汚濁粒
子の除去された処理水が得られる浄化装置および浄化方
法である。BEST MODE FOR CARRYING OUT THE INVENTION A coal storage turbid water purification apparatus and a purification method according to the present invention purify a coal storage turbid water discharged from a coal storage yard for storing coal to remove pollutant particles without using a chemical. A purification device and a purification method for obtaining treated water.
【００２９】薬剤を使用しない浄化処理法としては、貯
炭場濁水中に含まれる汚濁粒子の種類、濃度、処理量な
どにもよるが、例えば、沈降、遠心、電解、濾過などに
よる処理法を単独または組み合わせることができる。特
に、浄化処理に、電解処理や、濾過処理を含ませること
が好ましい。As a purification treatment method without using chemicals, for example, a treatment method by sedimentation, centrifugation, electrolysis, filtration or the like may be used, although it depends on the type, concentration, and treatment amount of the pollutant particles contained in the turbid water in the coal storage yard. Or they can be combined. In particular, it is preferable to include electrolytic treatment or filtration treatment in the purification treatment.
【００３０】例えば、貯炭場濁水を電解槽に導入して電
解による浄化を挙げることができる。For example, turbid water in a coal stockyard may be introduced into an electrolytic cell to purify it by electrolysis.
【００３１】汚濁粒子は通常、負に帯電しており、この
電気的反発力により、粒子同士が互いに反発し合ってい
る。このため、貯炭場濁水の汚濁状態は自然沈降の法則
に従わず、長期間濁ったままの状態となっている。電解
浄化は濁水に通電することで負に帯電している汚濁粒子
を電気的に中和し、汚濁粒子の自然沈降を促す作用があ
る。このため、電解処理された貯炭場濁水は汚濁濃度が
軽減された状態の処理水（電解浄化水）となる。電解浄
化による貯炭場濁水の汚濁低下の度合は電解槽に導入さ
れる貯炭場濁水の流量や、電解槽の形状、通電する電流
値、電極の構造によって変化する。The polluted particles are usually negatively charged, and the electric repulsive forces cause the particles to repel each other. For this reason, the polluted state of turbid water in the coal storage site does not follow the law of natural sedimentation and remains turbid for a long period of time. Electrolytic purification has the action of electrically neutralizing the negatively charged pollutant particles by energizing the turbid water, and promoting the spontaneous precipitation of the pollutant particles. Therefore, the electrolytically treated turbid water in the coal storage yard becomes treated water (electrolytically purified water) in a state where the pollutant concentration is reduced. The degree of pollution reduction of turbid water in the coal storage yard due to electrolytic purification changes depending on the flow rate of the turbid water in the coal yard that is introduced into the electrolytic cell, the shape of the electrolytic cell, the value of the current to be applied, and the structure of the electrode.
【００３２】電解処理によって浄化された処理水を得る
ようにしてもよいし、また、電解浄化により汚濁濃度が
軽減された電解浄化水を、さらに濾過処理を行って汚濁
濃度を低減させることもできる。この濾過処理により、
濁水中に残存する汚濁粒子の殆どを捕捉することができ
る。浄化した処理水は薬剤を含まないためそのまま放流
することができる。Treated water purified by electrolytic treatment may be obtained, or electrolytic purified water whose pollutant concentration has been reduced by electrolytic purification may be further filtered to reduce the pollutant concentration. . By this filtration process,
Most of the pollutant particles remaining in the turbid water can be captured. The purified treated water contains no chemicals and can be discharged as it is.
【００３３】以下、図面を参照して、さらに、本発明に
係る貯炭場濁水浄化装置および浄化方法の実施の形態に
ついて説明する。Embodiments of a coal storage turbid water purification device and a purification method according to the present invention will be further described below with reference to the drawings.
【００３４】図１は、本発明に係る貯炭場濁水浄化装置
の１例を示す概略図である。FIG. 1 is a schematic diagram showing an example of a coal storage turbid water purification apparatus according to the present invention.
【００３５】図１では、貯炭場濁水浄化装置３０は、電
解槽３１と、濾過器４１と、汚泥濃縮槽５１と、汚泥脱
水機５６と、固液分離器６１を備えている。In FIG. 1, the coal storage turbid water purification device 30 includes an electrolytic cell 31, a filter 41, a sludge concentrating tank 51, a sludge dewatering device 56, and a solid-liquid separator 61.
【００３６】図１に示すように、貯炭場から排出される
貯炭場濁水Ａは、原水導入ライン３２により電解槽３１
に流れ込む。電解槽３１には、貯炭場濁水Ａに通電する
ための電極（陽極・陰極）３３と、電解用直流電源３４
と、沈殿した石炭微粒子を掻き集めるための汚泥掻き寄
せ機３５が設けられている。As shown in FIG. 1, the muddy water A of the coal stockyard discharged from the coal stockyard is supplied to the electrolytic cell 31 through the raw water introduction line 32.
Flow into. In the electrolysis tank 31, an electrode (anode / cathode) 33 for energizing the muddy water A of the coal storage, and a DC power source 34 for electrolysis
And a sludge scraper 35 for scraping the precipitated coal particles.
【００３７】電解用直流電源３４により電極３３，３３
間に電圧を印加して貯炭場濁水Ａに通電すると、電解槽
３１内は、電解浄化作用によって汚濁粒子である石炭微
粒子が電解槽３１底部に沈降し、汚濁濃度が低減された
上澄み液が電解浄化水Ｂとして電解槽３１から電解浄化
水導出ライン３６によって排出される。A DC power source 34 for electrolysis is used to generate electrodes 33, 33.
When a voltage is applied between them to energize the coal storage turbid water A, in the electrolysis tank 31, coal fine particles, which are pollutant particles, settle at the bottom of the electrolysis tank 31 due to the electrolytic purification action, and the supernatant liquid with reduced pollutant concentration is electrolyzed. The purified water B is discharged from the electrolytic cell 31 through the electrolytic purified water lead-out line 36.
【００３８】一方、電解槽３１底部に沈降した汚濁粒子
（汚濁分）は、汚泥掻き寄せ機３５によって掻き寄せら
れ、汚泥引抜きポンプ３９によって電解槽３１底部より
排出され、汚泥導出ライン４０を通って汚泥の濃縮装置
である汚泥濃縮槽５１に送入される。On the other hand, the pollutant particles (contaminant) settled at the bottom of the electrolytic cell 31 are scraped by the sludge scraper 35, discharged from the bottom of the electrolytic tank 31 by the sludge drawing pump 39, and passed through the sludge discharge line 40. It is sent to the sludge thickening tank 51 which is a sludge thickening device.
【００３９】汚泥濃縮槽５１では、汚泥（汚濁分）の濃
縮によって汚濁粒子である石炭微粒子の凝集作用が促進
され、さらに高濃度に濃縮された汚泥Ｃが汚泥濃縮槽５
１底部に沈降する。汚泥濃縮槽５１底部に沈降し高濃度
化された汚泥（高濃度汚泥）Ｃは、汚泥掻き寄せ機５２
によって掻き寄せられ、汚泥引抜きポンプ５４を介して
高濃度汚泥導出ライン５５によって汚泥脱水機５６に送
られる。In the sludge thickening tank 51, the aggregating action of sludge (polluted matter) promotes the aggregating action of coal fine particles which are pollutant particles, and the sludge C further concentrated to a high concentration is sludge thickening tank 5
1 Settle at the bottom. The sludge (high-concentration sludge) C that has settled on the bottom of the sludge thickening tank 51 and has a high concentration is a sludge scraper 52.
And is sent to the sludge dehydrator 56 by the high-concentration sludge derivation line 55 via the sludge drawing pump 54.
【００４０】一方、汚泥濃縮槽５１の上澄み液は、汚泥
濃縮槽越流水Ｄとして越流水導出ライン５３によって電
解槽３１に還流され、原水受入れ槽である電解槽３１内
に貯溜される。On the other hand, the supernatant of the sludge concentrating tank 51 is returned to the electrolytic cell 31 as the sludge concentrating tank overflow water D by the overflow water derivation line 53, and is stored in the electrolytic tank 31 which is a raw water receiving tank.
【００４１】汚泥脱水機５６に送られた高濃度汚泥Ｃ
は、さらに脱水され、脱水汚泥Ｅとして固形化される。
高濃度汚泥Ｃの脱水によって分離された分離液（脱水分
離液）Ｆは脱水分離液導出ライン５７により電解槽３１
に返送（還流）され、電解槽３１内に貯溜される。High-concentration sludge C sent to the sludge dehydrator 56
Is further dehydrated and solidified as dehydrated sludge E.
The separated liquid (dehydrated separated liquid) F separated by dehydration of the high-concentration sludge C is supplied to the electrolytic bath 31 by the dehydrated separated liquid discharge line 57.
It is returned (refluxed) to and stored in the electrolytic bath 31.
【００４２】電解浄化処理を主とする貯炭場濁水浄化装
置の構成によって貯炭場濁水Ａは汚濁濃度が軽減された
電解浄化水Ｂと石炭微粒子が固形化された脱水汚泥Ｅと
に分離される。Due to the construction of the coal storage turbid water purification device mainly for electrolytic purification treatment, the coal storage turbid water A is separated into electrolytic purified water B having a reduced pollutant concentration and dehydrated sludge E in which coal particles are solidified.
【００４３】一方、電解槽３１内での上澄み水である汚
濁濃度が低減された電解浄化水Ｂは、濾過ポンプ３７を
介して電解浄化水導出ライン３６により濾過装置を構成
する濾過器４１に案内され、濾過器４１ａに送入され
る。On the other hand, the electrolyzed purified water B, which is the supernatant water in the electrolyzer 31 and whose pollutant concentration has been reduced, is guided to the filter 41 constituting the filtering device by the electrolyzed purified water outlet line 36 via the filtration pump 37. And is sent to the filter 41a.
【００４４】濾過器４１内には、濾過機能を有する濾過
体４２が装填されており、この濾過体４２によって電解
浄化水Ｂの濾過が行われる。貯炭場濁水Ａに含まれる石
炭微粒子は例えば２μｍを中間粒径として０．３〜２０
μｍの粒径範囲で分布しており、濾過体４２はこれを捕
捉できる濾過機能を有している。濾過体４２の材料とし
ては、例えば、珪藻土などを濾過助材として使用するプ
レコート濾過体、金属の微細な金網や発泡金属などの多
孔質材料、中空糸膜などの機能膜素材などが採用され
る。A filter 41 having a filtering function is loaded in the filter 41, and the electrolytic purified water B is filtered by the filter 42. The coal fine particles contained in the coal storage turbid water A have an intermediate particle size of 2 μm, for example, 0.3 to 20
The particles are distributed in the particle size range of μm, and the filter 42 has a filtering function capable of capturing the particles. As the material of the filter body 42, for example, a precoated filter body using diatomaceous earth or the like as a filter aid, a porous material such as a fine metal wire mesh or a metal foam, and a functional membrane material such as a hollow fiber membrane are adopted. .
【００４５】濾過器４１は濾過体４２を保持する仕切り
プレート４２ａにより電解浄化水が案内される濾過室４
１ａと濾過体４２で濾過された浄化処理水Ｇが案内され
る浄化処理室４１ｂとに区画される。濾過室４１ａに案
内された電解浄化水のうち、貯炭場濁水Ａの汚濁粒子で
ある石炭微粒子は、濾過体４２の表面（一次側）で捕捉
され、同表面上にケーク（汚濁分）となって堆積する。
濾過体４２を透過した濾過水は、石炭微粒子が殆ど除去
された浄化処理水Ｇであり、濾過出口側弁４３を経て濾
過水一時貯溜槽４４に供給され、この貯溜槽４４内に一
時貯溜され、その後、公共河川や海洋に放流される。The filter 41 is a filter chamber 4 in which electrolytically purified water is guided by a partition plate 42a holding a filter 42.
1a and a purification treatment chamber 41b in which the purification treatment water G filtered by the filter 42 is guided. Of the electrolytically purified water guided to the filtration chamber 41a, the coal particles, which are the polluted particles of the coal storage muddy water A, are captured on the surface (primary side) of the filter body 42 and become cake (polluted matter) on the surface. Accumulate.
The filtered water that has passed through the filter body 42 is the purified treated water G from which most of the coal fine particles have been removed, is supplied to the filtered water temporary storage tank 44 via the filtration outlet side valve 43, and is temporarily stored in this storage tank 44. , Then released to public rivers and oceans.
【００４６】以上のような濾過装置としての濾過器４１
においては、濾過処理量が所定の水量に達するに伴っ
て、濾過体４２表面に堆積する石炭微粒子のケークが成
長し、すなわち、ケークの厚みが厚くなり濾過される水
量が低下する。濾過水量が低下すると濁水浄化装置全体
の浄化処理量が低下する。The filter 41 as the above filtering device
In the above, the cake of the coal particles deposited on the surface of the filter body 42 grows as the amount of filtration treatment reaches a predetermined amount of water, that is, the thickness of the cake increases and the amount of filtered water decreases. When the amount of filtered water decreases, the amount of purification treatment of the entire turbid water purification device decreases.
【００４７】このため、濾過器４１の濾過処理水量、も
しくは濾過圧力を監視装置（図示せず）によって監視
し、所定の値に達した時点で濾過器４１の洗浄、すなわ
ち逆洗を行う。濾過器４１の逆洗は、先ず濾過処理のた
めに開いていた濾過入口側弁３８と濾過出口側弁４３を
閉止し、逆洗排出弁４９を開放する。次いで、逆洗水弁
４６を開放して、逆洗水ポンプ４５を運転し、あるいは
逆洗空気弁４８を開放して逆洗空気ポンプ４７を運転
し、濾過体４２の内面（二次側：浄化処理室側）より逆
洗水、あるいは逆洗空気を濾過器４１に注入して濾過体
４２の表面に堆積させ、成長した石炭微粒子のケーク
（汚濁分）を剥離し、逆洗排出弁４９より浄化処理系外
に排出する。Therefore, the amount of filtered water or the filtration pressure of the filter 41 is monitored by a monitoring device (not shown), and when the filter reaches a predetermined value, the filter 41 is washed, that is, backwashed. In backwashing the filter 41, first, the filter inlet side valve 38 and the filter outlet side valve 43, which were opened for the filtering process, are closed and the backwash discharge valve 49 is opened. Next, the backwash water valve 46 is opened and the backwash water pump 45 is operated, or the backwash air valve 48 is opened and the backwash air pump 47 is operated, and the inner surface of the filter body 42 (secondary side: Backwash water or backwash air is injected into the filter 41 from the purification treatment chamber side) to be deposited on the surface of the filter body 42, and the cake (polluted matter) of the grown coal fine particles is peeled off, and the backwash discharge valve 49 More discharged to the outside of the purification system.
【００４８】濾過器４１の逆洗に用いる水は、清浄な水
を必要とするため、水源として、濾過水一次貯溜槽４４
の濾過水を使用する。逆洗によって浄化処理系外に排出
される石炭微粒子のケークは濾過圧力による圧密作用に
よって硬化しており、容易には崩壊、再分散しないが、
濾過器４１内に残留していた電解浄化水Ｂや逆洗水など
と混合された固液混合状態で浄化処理系外に排出され
る。Since the water used for backwashing the filter 41 requires clean water, the filtered water primary storage tank 44 is used as a water source.
Of filtered water is used. The cake of coal fine particles discharged to the outside of the purification treatment system by backwashing is hardened by the consolidating action due to the filtration pressure and does not easily collapse or redisperse,
The electrolytically purified water B remaining in the filter 41 and the backwash water are discharged in a solid-liquid mixed state to the outside of the purification treatment system.
【００４９】濾過器４１より排出された固液混合物は、
脱水装置を兼ねる固液分離器６１である固液分離網６２
によって石炭微粒子のケーク（逆洗汚泥）Ｈと逆洗水Ｉ
に分離される。石炭微粒子のケークＨは容易には崩壊、
再分散しないため固液分離網６２上に残留し、固形物と
して分離される。固液分離網６２を透過した逆洗水（濾
過逆洗水）Ｉは、逆洗水槽６３に貯溜され、逆洗水送出
ポンプ６４を介して濾過逆洗水導出ライン６５により原
水受入れ槽である前段の電解槽３１に返送（還流）され
る。The solid-liquid mixture discharged from the filter 41 is
Solid-liquid separation net 62 that is a solid-liquid separator 61 that also serves as a dehydrator
Depending on the coal particulate cake (backwash sludge) H and backwash water I
Is separated into Cake H, which is a fine particle of coal, easily collapses,
Since it is not redispersed, it remains on the solid-liquid separation network 62 and is separated as a solid. The backwash water (filtered backwash water) I that has passed through the solid-liquid separation network 62 is stored in the backwash water tank 63, and is a raw water receiving tank through the backwash water delivery pump 64 and the filtered backwash water outlet line 65. It is returned (refluxed) to the electrolytic bath 31 in the previous stage.
【００５０】この貯炭場濁水の浄化装置および浄化方法
においては、薬剤を使用せずに貯炭場濁水が浄化処理さ
れるので、得られる浄化処理水Ｇは薬剤成分が含有され
る可能性はなく、またその水質は安定している。そのた
め、放流に際しｐＨ調整等の必要性はなく、そのまま公
共河川や海洋に放流することができる。また、その一部
を濾過器４１の洗浄水として使用したり、その他発電所
や製鉄所内等、各種プラント内の水資源として有効に利
用することができる。In this apparatus and method for purifying turbid water in a coal storage yard, the turbid water in the coal storage yard is purified without using a chemical agent, so that the purified treated water G obtained does not possibly contain a chemical component. The water quality is stable. Therefore, it is not necessary to adjust the pH when releasing the water, and the water can be directly discharged to the public river or the ocean. In addition, a part of the water can be used as washing water for the filter 41, or can be effectively used as water resources in other plants such as power plants and steel plants.
【００５１】また、薬剤を使用しないため、貯炭場濁水
を浄化処理して除去される汚濁粒子からなる汚濁分に
は、薬剤成分が混入されることはなく、石炭源として有
効に用いることができる。例えば、汚泥脱水機５６で脱
水処理して得られる脱水汚泥Ｅや、濾過器４１の逆洗で
得られる逆洗汚泥Ｈを燃料として用いることができる。Further, since no chemicals are used, the chemical components are not mixed in the pollutant consisting of the polluted particles removed by purifying the turbid water in the coal storage yard, and it can be effectively used as a coal source. . For example, dehydrated sludge E obtained by dehydration treatment with the sludge dehydrator 56 or backwash sludge H obtained by backwashing the filter 41 can be used as fuel.
【００５２】汚濁分は、採用する貯炭場濁水の浄化装置
および処理法や、汚濁分の利用目的などに応じて、その
濃縮、脱水の仕方、その度合などを調整することができ
る。例えば、汚泥濃縮槽５１を省略したり、濃縮を電解
槽３１等で行わせてもよい。Contaminant content can be adjusted in its concentration, dehydration method, degree, etc. according to the purifying device and treatment method of the coal storage turbidity water used, the purpose of utilizing the pollutant content, and the like. For example, the sludge thickening tank 51 may be omitted, or the sludge may be concentrated in the electrolytic tank 31 or the like.
【００５３】この貯炭場濁水の浄化装置および浄化方法
においては、薬剤を不要とするとともに、貯炭場濁水の
浄化処理中に、薬剤成分が浄化処理水に混入されないよ
うに、浄化装置は薬剤成分を溶解させる危険性の少ない
材質から形成される。In this purifying apparatus and method for purifying turbid water in the coal storage yard, the purifying device eliminates the need for chemicals and prevents the chemical components from being mixed into the purifying water during the purifying treatment of the turbid water in the coal storage yard. It is made of a material that has a low risk of melting.
【００５４】また、この貯炭場濁水の浄化装置および浄
化方法において、濾過処理、特に最終段階を濾過処理と
することにより、貯炭場濁水の処理水量が急激に増加し
た場合でも、濾過処理における濾過圧力を高めに調整し
て、または濾過体の洗浄回数を多くすることにより貯炭
場濁水の処理を有効的に行うことができる。Further, in this apparatus and method for purifying turbid water of coal storage yard, the filtration pressure in the filtration treatment, especially when the treated water amount of the turbid water of coal storage yard is suddenly increased by using the filtration treatment in the final stage. By adjusting the value to a higher value or increasing the number of times the filter body is washed, it is possible to effectively treat the muddy water in the coal stockyard.
【００５５】本発明に係る貯炭場濁水の浄化装置および
浄化方法は、従来の貯炭場濁水の浄化装置および浄化方
法に比べ、以下のような有用性を有する。The purifying apparatus and method for purifying turbid water in a coal storage yard according to the present invention has the following usefulness as compared with the conventional purifying apparatus and method for purifying turbid water in a coal storage yard.
【００５６】（濁水浄化装置の構成）従来の濁水浄化装
置および浄化方法では、貯炭場濁水の浄化処理に（１）
ｐＨ調整、（２）凝集剤注入、（３）反応促進、（４）
沈降分離と４工程が必要である。これに対し、図１に示
された貯炭場濁水浄化装置および浄化方法では、例え
ば、（１）電解浄化、（２）濾過と２工程で濁水浄化を
完了させることができる。このため濁水浄化装置が簡単
で制御すべき機器類も少なく、制御が単純となり、かつ
部品点数も少なく、組立も容易となる一方、故障の可能
性も低くなる。さらに、貯炭場濁水のｐＨ調整を行わな
いことから、浄化処理水を放流時に改めてｐＨを調整す
る必要が少なくなる。(Structure of Turbid Water Purifying Device) In the conventional turbid water purifying device and purifying method, the purifying treatment of the turbid water in the coal stock yard (1)
pH adjustment, (2) coagulant injection, (3) reaction promotion, (4)
Sedimentation and 4 steps are required. On the other hand, in the coal yard muddy water purification apparatus and purification method shown in FIG. 1, muddy water purification can be completed in two steps, for example, (1) electrolytic purification and (2) filtration. For this reason, the turbid water purification device is simple, the number of devices to be controlled is small, the control is simple, the number of parts is small, the assembly is easy, and the possibility of failure is low. Furthermore, since the pH of the turbid water in the coal storage yard is not adjusted, it is less necessary to adjust the pH again when the purified water is discharged.
【００５７】（薬剤害の回避）従来の浄化装置および浄
化方法では、薬剤による凝集処理を行うため、多種、多
量の薬剤を使用する。しかし、図１の貯炭場濁水浄化装
置および浄化方法は、薬剤を全く必要としない装置およ
び方法であるため、浄化処理によって新たに薬剤成分が
混入する危険性が無い。唯一、有害成分の溶解の危険性
があるとすれば、電解浄化処理時に電極（陽極）により
電極材料の成分が処理水に溶出する懸念があるが、これ
については陽極の材質を白金や炭素などの不溶性材料に
することで電極材料成分の溶出を防止することができ
る。(Avoidance of Chemical Harm) In the conventional purifying apparatus and purifying method, a large amount of various kinds of chemicals are used because agglomeration treatment with chemicals is performed. However, since the coal storage turbid water purification device and the purification method of FIG. 1 do not require any chemicals, there is no risk of new chemical components being mixed in by the purification treatment. If there is a danger that harmful components will be dissolved, there is a concern that the electrode (anode) will elute the components of the electrode material into the treated water during electrolytic purification treatment. The insoluble material can prevent the electrode material components from being eluted.
【００５８】（放流水、脱水汚泥の再利用）図１に示さ
れた貯炭場濁水浄化装置および浄化方法では、薬剤を使
用せず、かつ濁水浄化装置からの有害成分の溶出の可能
性も皆無である。また、貯炭場濁水の生成過程から見れ
ば元々、水源が工水や雨水であるため石炭自体が疎水性
であることを考慮すると、放流する浄化処理水に有害成
分が溶解している可能性は殆どない。このため、石炭微
粒子を除去して浄化した処理水を公共河川や海洋に放流
せずに新たな水資源として再使用することが可能とな
る。(Reuse of Discharged Water and Dewatered Sludge) In the coal storage turbid water purification apparatus and purification method shown in FIG. 1, no chemicals are used, and there is no possibility of elution of harmful components from the turbid water purification apparatus. Is. In addition, considering that the coal itself is hydrophobic because the water source is industrial water or rainwater from the viewpoint of the generation process of turbid water in the coal storage yard, it is possible that harmful components may be dissolved in the purified treated water discharged. Almost never. Therefore, it becomes possible to reuse the treated water, which is purified by removing the fine particles of coal, as a new water resource without being discharged to public rivers and the ocean.
【００５９】また、固形物として回収された石炭微粒子
の脱水汚泥も薬剤成分を含んでいないため、燃料として
再利用することが可能となり、固形廃棄物が発生するこ
とはない。Further, since the dehydrated sludge of coal fine particles recovered as a solid does not contain a chemical component, it can be reused as a fuel and solid waste is not generated.
【００６０】（凝集フロックのキャリーオーバ回避）従
来の浄化装置および浄化方法では、沈殿分離法による浄
化であるため、処理水量が急激に増加し、浄化処理系内
の流速が増大することにより、凝集フロックが浄化処理
系外に越流され、流出する危険性が高かった。しかしな
がら、図１に示される貯炭場濁水浄化装置および浄化方
法では、最終処理法を濾過処理法とすることにより、処
理水量が急激に増加しても石炭微粒子分が系外に流出す
る可能性はない。また、処理水量が急激に増加した場
合、上述のように、濾過処理における濾過圧力を高めた
り、逆洗回数を多くすることで処理水量を多くしたり、
調整することができるため、貯炭場濁水の流入水量の増
減に対応することができる。(Avoidance of carryover of flocculation flocs) In the conventional purifying apparatus and purifying method, since the purification is performed by the precipitation separation method, the amount of treated water rapidly increases and the flow velocity in the purifying treatment system increases. There was a high risk that flocs would overflow to the outside of the purification system and flow out. However, in the coal storage turbid water purification apparatus and purification method shown in FIG. 1, since the final treatment method is the filtration treatment method, there is a possibility that the fine coal particles will flow out of the system even if the treated water amount rapidly increases. Absent. Further, when the amount of treated water sharply increases, as described above, the filtration pressure in the filtration treatment is increased, or the amount of treated water is increased by increasing the number of backwashing,
Since it can be adjusted, it is possible to respond to the increase or decrease in the inflow of turbid water in the coal storage yard.
【００６１】なお、本発明は、貯炭場からの排出濁水だ
けでなく、ゴミ等の異物貯留場から排出される濁水等の
処理に応用できる。The present invention can be applied not only to the turbid water discharged from a coal storage yard, but also to the treatment of turbid water discharged from a foreign matter storage such as dust.
【００６２】[0062]
【発明の効果】本発明は、濁水浄化装置の構成が簡単で
制御すべき機器類も少なく、運転がし易い貯炭場濁水の
浄化装置および浄化方法を提供することができる。Industrial Applicability The present invention can provide a purifying device and a purifying method for a turbid water in a coal storage yard, which has a simple structure of the turbid water purifying device, has few devices to be controlled, and is easy to operate.
【００６３】本発明に係る貯炭場濁水の浄化装置および
浄化方法では、薬剤成分が貯炭場濁水に混入する危険性
がなく、しかも資源として有効再利用が可能な浄化処理
水および汚濁分を得ることができる。In the purifying apparatus and the purifying method of the turbid water of the coal storage yard according to the present invention, there is no risk of the chemical components being mixed in the turbid water of the coal storage yard, and moreover, the purified treated water and pollutants which can be effectively reused as resources are obtained. You can
【００６４】また、本発明に係る貯炭場濁水の浄化装置
および浄化方法は、貯炭場濁水の処理水量の急激な増加
に対しても良好に対応することができる。Further, the purifying apparatus and the purifying method for turbid water in a coal storage yard according to the present invention can satisfactorily cope with a sudden increase in the treated water amount of turbid water in a coal storage yard.
【図１】本発明に係る貯炭場濁水浄化装置の一実施形態
を示す概略図。FIG. 1 is a schematic view showing an embodiment of a coal storage muddy water purification device according to the present invention.
【図２】従来の貯炭場濁水の浄化装置を示す概略図。FIG. 2 is a schematic view showing a conventional purification apparatus for muddy water in a coal stockyard.
３０ 貯炭場濁水浄化装置 ３１ 電解槽 ３２ 原水導入ライン ３３ 電極 ３４ 電解用直流電源 ３５ 汚泥掻き寄せ機 ３６ 電解浄化水導出ライン ３７ 濾過ポンプ ３８ 濾過入口側弁 ３９ 汚泥引抜きポンプ ４０ 汚泥導出ライン ４１ａ 濾過室 ４１ｂ 浄化処理室 ４１ 濾過器（濾過装置） ４２ 濾過体 ４２ａ 仕切りプレート ４３ 濾過出口側弁 ４４ 濾過水一次貯溜槽 ４５ 逆洗水ポンプ ４６ 逆洗水弁 ４７ 逆洗空気ポンプ ４８ 逆洗空気弁 ４９ 逆洗排出弁 ５１ 汚泥濃縮槽（濃縮装置） ５２ 汚泥掻き寄せ機 ５３ 越流水導出ライン ５４ 汚泥引抜きポンプ ５５ 高濃度汚泥導出ライン ５６ 汚泥脱水機（脱水装置） ５７ 脱水分離液導出ライン ６１ 固液分離器（脱水装置） ６２ 固液分離網 ６３ 逆洗水槽 ６４ 逆洗水送出ポンプ ６５ 濾過逆洗水導出ライン ａ 貯炭場濁水（原水） ｂ アルカリ調整剤 ｃ 酸調整剤 ｄ 凝集剤 ｅ 凝集助剤 ｆ 浄化処理水（放流水） ｇ 沈殿槽汚泥 ｈ 高濃度汚泥 ｉ 汚泥濃縮槽越流水 ｊ 脱水汚泥（石炭微粒子） ｋ 脱水機分離水 Ａ 貯炭場濁水（原水） Ｂ 電解浄化水 Ｃ 高濃度汚泥 Ｄ 汚泥濃縮槽越流水 Ｅ 脱水汚泥（石炭微粒子） Ｆ 脱水分離液 Ｇ 浄化処理水（放流水） Ｈ 逆洗汚泥（石炭微粒子） Ｉ 濾過逆洗水 30 Coal storage muddy water purification device 31 Electrolyzer 32 Raw water introduction line 33 electrodes 34 DC power supply for electrolysis 35 Sludge scraper 36 Electrolyzed purified water derivation line 37 Filtration pump 38 Filter inlet side valve 39 Sludge drawing pump 40 Sludge derivation line 41a Filtration chamber 41b Purification treatment room 41 Filter (filtering device) 42 Filter 42a Partition plate 43 Filtration outlet side valve 44 Filtered water primary storage tank 45 Backwash water pump 46 Backwash water valve 47 Backwash air pump 48 Backwash air valve 49 Backwash discharge valve 51 Sludge thickener (concentrator) 52 Sludge scraper 53 Overflow water outflow line 54 Sludge drawing pump 55 High-concentration sludge derivation line 56 Sludge dehydrator (dehydrator) 57 Dehydrated separated liquid discharge line 61 Solid-liquid separator (dehydrator) 62 Solid-liquid separation network 63 Backwash water tank 64 Backwash water delivery pump 65 Filtration backwash water outflow line a Coal storage muddy water (raw water) b Alkaline adjuster c Acid adjuster d Flocculant e Agglomeration aid f Purified water (discharged water) g Settling tank sludge h High concentration sludge i Sludge thickener overflow water j Dewatered sludge (coal fine particles) k dehydrator separation water A coal storage muddy water (raw water) B Electrolyzed purified water C high concentration sludge D Sludge thickening tank overflow water E Dewatered sludge (coal fine particles) F dehydrated separation liquid G Purified water (discharged water) H Backwash sludge (coal fine particles) I Filtered backwash water
Claims (14)
水を浄化する濁水浄化装置において、上記濁水を電解に
より浄化する電解槽を有することを特徴とする貯炭場濁
水浄化装置。1. A turbid water purifying apparatus for purifying turbid water discharged from a coal storage yard for storing coal, comprising an electrolytic cell for purifying the turbid water by electrolysis.
により浄化して除去される汚濁粒子からなる汚濁分を脱
水処理する脱水装置を備えた請求項１に記載の貯炭場濁
水浄化装置。2. The turbid water purification device of a coal stockyard according to claim 1, wherein the turbid water purification device includes a dewatering device for dewatering a pollutant consisting of pollutant particles that are removed by electrolyzing turbid water in an electrolytic cell.
により浄化して除去される汚濁粒子からなる汚濁分を濃
縮する濃縮装置と、この濃縮装置で得られた高濃度の汚
濁分を脱水する脱水装置を備えた請求項２に記載の貯炭
場濁水浄化装置。3. The turbid water purification device is a concentrating device for concentrating a pollutant consisting of pollutant particles removed by electrolyzing turbid water in an electrolytic cell, and a high-concentration pollutant obtained by the concentrating device is dehydrated. The coal storage turbid water purification device according to claim 2, further comprising a dehydrating device for controlling the turbid water.
により浄化して得られる電解浄化水を濾過する濾過装置
を備えた請求項１または２に記載の貯炭場濁水浄化装
置。4. The coal storage station turbid water purification device according to claim 1, wherein the turbid water purification device includes a filtration device for filtering electrolytically purified water obtained by electrolyzing turbid water in an electrolytic cell.
する濾過装置で除去された汚濁粒子からなる汚濁分を脱
水する脱水装置を有する請求項４に記載の貯炭場濁水浄
化装置。5. The apparatus for purifying turbid water in a coal stockyard according to claim 4, wherein the turbid water treatment apparatus has a dewatering apparatus for dewatering a pollutant composed of pollutant particles removed by a filtering apparatus for filtering electrolytically purified water.
られる処理水に薬剤成分を溶解させる危険性の少ない材
料で電解槽を形成した請求項１〜５のいずれかに記載の
貯炭場濁水浄化装置。6. The coal storage yard according to claim 1, wherein the turbid water purification device has an electrolytic cell formed of a material having a low risk of dissolving a chemical component in treated water obtained by purifying turbid water. Turbid water purification device.
水を処理薬剤の不存在下で浄化処理し、濁水から汚濁粒
子の除去された処理水を得ることを特徴とする貯炭場濁
水の浄化方法。7. Purification of turbid water discharged from a coal storage yard for storing coal in the absence of a treatment chemical to obtain treated water from which pollutant particles have been removed from the turbid water. Method.
に電圧を印加させる電解処理により行う請求項７に記載
の貯炭場濁水の浄化方法。8. The method for purifying turbid water in a coal stockyard according to claim 7, wherein the turbid water purification treatment is performed by an electrolytic treatment in which a voltage is applied to the electrodes of the electrolytic cell.
行う請求項７に記載の貯炭場濁水の浄化方法。9. The method for purifying turbid water in a coal storage yard according to claim 7, wherein the turbid water purification treatment is performed by a filtration treatment.
れた電解浄化水と汚濁粒子からなる汚濁分とに分離し、
分離された電解浄化水を濾過して浄化された処理水を得
る請求項７に記載の貯炭場濁水の浄化方法。10. The turbid water is electrolyzed to separate it into electrolyzed purified water having a reduced pollutant concentration and a pollutant consisting of pollutant particles,
The method for purifying turbid water in a coal storage yard according to claim 7, wherein purified electrolyzed water is filtered to obtain purified treated water.
水を水資源として再利用する請求項７〜１０のいずれか
に記載の貯炭場濁水の浄化方法。11. The method for purifying muddy water in a coal stockyard according to claim 7, wherein the treated water obtained by purifying the muddy water is reused as a water resource.
濁粒子からなる汚濁分を脱水処理する請求項７〜１１の
いずれかに記載の貯炭場濁水の浄化方法。12. The method for purifying turbid water in a coal storage yard according to claim 7, wherein the turbid water is subjected to a purifying treatment and a polluted component made of polluted particles separated is dehydrated.
濁粒子からなる汚濁分を脱水処理し、脱水された汚濁分
を石炭源として再利用する請求項１２に記載の貯炭場濁
水の浄化方法。13. The method for purifying turbid water in a coal storage yard according to claim 12, wherein the turbid water is purified, and the polluted particles made of polluted particles separated are dehydrated, and the dehydrated polluted matter is reused as a coal source. .
場合、濾過処理における濾過圧力を高めに調整して、ま
たは濾過体の洗浄回数を多くして貯炭場濁水の処理を行
う請求項１０に記載の貯炭場濁水の浄化方法。14. The method according to claim 10, wherein when the amount of treated water of the muddy water rapidly increases, the filtration pressure in the filtering treatment is adjusted to be higher or the number of times of washing the filter body is increased to treat the muddy water in the coal stockyard. The method for purifying turbid water from the coal storage site described.
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|---|---|---|---|
| JP2001387416A JP4033671B2 (en) | 2001-12-20 | 2001-12-20 | Coal storage muddy water purification device and coal muddy muddy water purification method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001387416A JP4033671B2 (en) | 2001-12-20 | 2001-12-20 | Coal storage muddy water purification device and coal muddy muddy water purification method |
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| Publication Number | Publication Date |
|---|---|
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| JP4033671B2 JP4033671B2 (en) | 2008-01-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015079205A1 (en) * | 2013-11-29 | 2015-06-04 | Surewaters Consultancy Limited | Method and plant for treatment of dispersion |
| CN105000785A (en) * | 2015-07-15 | 2015-10-28 | 上海天丰环保有限公司 | Intelligent sludge treatment device |
| KR102125732B1 (en) * | 2019-11-05 | 2020-06-23 | 아쿠아셀 주식회사 | Recycling water and pellets producing method |
-
2001
- 2001-12-20 JP JP2001387416A patent/JP4033671B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015079205A1 (en) * | 2013-11-29 | 2015-06-04 | Surewaters Consultancy Limited | Method and plant for treatment of dispersion |
| CN105000785A (en) * | 2015-07-15 | 2015-10-28 | 上海天丰环保有限公司 | Intelligent sludge treatment device |
| KR102125732B1 (en) * | 2019-11-05 | 2020-06-23 | 아쿠아셀 주식회사 | Recycling water and pellets producing method |
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