JP2002172394A - Method for ss removing treatment of yard wastewater - Google Patents
Method for ss removing treatment of yard wastewaterInfo
- Publication number
- JP2002172394A JP2002172394A JP2000369477A JP2000369477A JP2002172394A JP 2002172394 A JP2002172394 A JP 2002172394A JP 2000369477 A JP2000369477 A JP 2000369477A JP 2000369477 A JP2000369477 A JP 2000369477A JP 2002172394 A JP2002172394 A JP 2002172394A
- Authority
- JP
- Japan
- Prior art keywords
- concentration
- wastewater
- treatment process
- wastewater treatment
- low
- 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.)
- Withdrawn
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、粉粒体（塊を含
み、以下「粉粒体」という。）を貯蔵した野外ヤード
で、散水や雨水などにより生じるＳＳを含む排水の処理
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating wastewater containing SS generated by sprinkling or rainwater in an outdoor yard storing powders (including lumps, hereinafter referred to as "particles"). It is.
【０００２】[0002]
【従来の技術】例えば、製鉄業での排水としては、大別
して （１）工場の生産活動に伴って冷却、洗浄時に発生する
冷却排水、洗浄排水などの工場排水 （２）降雨に伴って発生する雨水排水 がある。2. Description of the Related Art For example, wastewater in the steelmaking industry can be roughly classified into (1) factory wastewater such as cooling wastewater and washing wastewater generated during cooling and washing associated with the production activities of a factory, and (2) wastewater caused by rainfall. There is rainwater drainage.
【０００３】従来は、主として（１）の工場排水に対し
て公害防止対策を講じていたが、最近、公害に対する認
識の高まりから雨天時の対策も講じている。ローカル条
件によって程度の差はあるが、降雨に伴って公害上の問
題を発生する場所と公害対象（物質）としては、 １．原料、副原料、石炭ヤード・・ＳＳ（浮遊性物
質）、色度、ｐＨ ２．スクラップヤード・・・・・・ＳＳ、色度、油 ３．バラスヤード・・・・・・・・ＳＳ、ｐＨ などがある。Conventionally, pollution prevention measures have been taken mainly for (1) factory wastewater, but recently, measures have been taken in rainy weather due to an increase in awareness of pollution. Although there are some differences depending on the local conditions, the places where pollution problems occur due to rainfall and the pollution targets (materials) are as follows. 1. Raw material, auxiliary raw material, coal yard SS (floating substance), chromaticity, pH 2. Scrap yard: SS, chromaticity, oil Ballast yard: SS, pH, etc.
【０００４】従来、これらの野外ヤードの排水処理プロ
セスの内、ＳＳを除去する排水処理プロセスとしては、
図６に示すように、例えば鉄鉱石１の貯蔵ヤード２から
の多量のＳＳを含むヤード排水３をＵ字溝４を経てポン
プピット５に集め、ポンプピット５からポンプＰａで調
整槽６に集めて水量調整してから、凝集剤７や処理剤８
を添加した撹拌器９付きの凝集反応槽１０経由で沈殿池
１１に導き、凝集反応槽１０で凝集させたＳＳを沈殿さ
せて除去し、水槽１２経由で無害化した上澄水３ｃを水
槽１２経由で河川や海に放流する排水処理プロセスが知
られている。この従来の排水処理プロセスでは、晴天
時、雨天時を兼ねるようになっており、最大降雨量を想
定した容量を処理できるように大規模の凝集反応槽１０
と沈殿池１１が配置されている。Conventionally, of these outdoor yard wastewater treatment processes, the wastewater treatment processes for removing SS include:
As shown in FIG. 6, for example, yard wastewater 3 containing a large amount of SS from a storage yard 2 of iron ore 1 is collected in a pump pit 5 through a U-shaped groove 4, and collected in a regulating tank 6 by a pump Pa from the pump pit 5. After adjusting the amount of water, the coagulant 7 and the treating agent 8
Is added to the sedimentation basin 11 via the flocculation reaction tank 10 with the stirrer 9, and the SS flocculated in the flocculation reaction tank 10 is precipitated and removed, and the detoxified supernatant water 3 c via the water tank 12 is passed through the water tank 12. Wastewater treatment processes for discharging into rivers and the sea are known. In the conventional wastewater treatment process, the large-scale coagulation reaction tank 10 is designed to be able to handle a capacity assuming the maximum rainfall amount when it is sunny and rainy.
And a sedimentation basin 11 are arranged.
【０００５】近年、ヤード２からの粉塵の飛散を防止す
る観点から、晴天時の散水が増えており、少水量ながら
ＳＳを含む排水３が絶えることはなく、排水処理は毎日
行われている。この排水処理においては、雨天時の排水
量に対応する大容量の凝集反応槽１０に凝集剤７を添加
して排水４中のＳＳを凝集し、大きなＳＳフロックを生
成して沈殿池１１で沈殿させ、上澄水３ｃを放流するも
のであるが、ＳＳ濃度が低くなると、凝集剤を加えても
ＳＳフロックが微細になり、沈殿池１１からの流量を絞
ってもＳＳフロックが流出して水質規制に触れる懸念が
ある。[0005] In recent years, from the viewpoint of preventing dust from scattering from the yard 2, watering during fine weather has increased, and the wastewater 3 including SS has not been discontinued despite a small amount of water, and wastewater treatment is performed every day. In this wastewater treatment, a flocculant 7 is added to a large-capacity flocculation reaction tank 10 corresponding to the amount of wastewater in rainy weather, and the SS in the wastewater 4 is flocculated, large SS flocs are generated and precipitated in the sedimentation basin 11. And the supernatant water 3c is discharged. When the SS concentration becomes low, the SS floc becomes fine even when the flocculant is added, and even when the flow rate from the sedimentation basin 11 is narrowed, the SS floc flows out to meet the water quality regulation. There are concerns about touching.
【０００６】晴天時のＳＳ濃度は排水初期には幾分高く
なるが、次第に安定化し、低濃度に落ちつく。また、雨
天時には、排水量が晴天時の２〜１０倍まで増加するこ
とがあり、降雨量が多くなるほど排水３中のＳＳ濃度が
高くなる。従って、晴天時は、ＳＳ濃度が低いため、凝
集剤を加えてもＳＳフロックが微細になり、処理水質が
悪化する。[0006] The SS concentration in fine weather slightly increases in the early stage of drainage, but gradually stabilizes and drops to a low concentration. In addition, in rainy weather, the amount of drainage may increase to 2 to 10 times that in fine weather, and the SS concentration in the drainage 3 increases as the amount of rainfall increases. Therefore, when the weather is fine, since the SS concentration is low, the SS floc becomes fine even if the coagulant is added, and the quality of the treated water deteriorates.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、ヤードの排
水中のＳＳを除去する排水処理方法において、凝集剤の
コスト負担を大幅に節減して、排水処理コスト負担を大
幅に軽減できかつ晴天時も安定して処理できる排水処理
方法を提供するものである。SUMMARY OF THE INVENTION The present invention relates to a wastewater treatment method for removing SS in wastewater from a yard, in which the cost burden of a coagulant can be greatly reduced, the wastewater treatment cost burden can be greatly reduced, and clear weather can be achieved. An object of the present invention is to provide a wastewater treatment method capable of stably treating the wastewater even at times.
【０００８】[0008]
【課題を解決するための手段】本発明は、下記（１）〜
（７）の発明から構成されるものである。 （１）．濾過もしくは凝集濾過による少水量低濃度ＳＳ
排水処理プロセスと凝集沈殿による雨天時の多水量高濃
度ＳＳ排水処理プロセスを切り替えて用いる、ＳＳを含
むヤード排水の処理方法であって、晴天時の散水による
少水量で低濃度のＳＳを含むヤード排水を前記少水量低
濃度ＳＳ排水処理プロセスで処理し、基準降雨量を超え
たときの多水量で高濃度のＳＳを含むヤード排水を前記
多水量高濃度ＳＳ排水処理プロセスで処理することを特
徴とするヤード排水のＳＳ除去処理方法。 （２）．濾過もしくは凝集濾過による少水量低濃度ＳＳ
排水処理プロセスと凝集沈殿による多水量ＳＳ排水処理
プロセスを併用する、ＳＳを含むヤード排水の処理方法
であって、晴天時の少水量で低濃度のＳＳ排水を少水量
低濃度ＳＳ排水処理プロセスで処理し、雨天時には、多
水量で高濃度のＳＳ排水を多水量高濃度ＳＳ排水処理プ
ロセスにオーバーフロー（またはバイパス）させて導入
し、少水量低濃度ＳＳ排水処理プロセスと多水量高濃度
ＳＳ排水処理プロセスを併用して処理することを特徴と
するヤード排水のＳＳ除去処理方法。 （３）．（１）または（２）において、少水量低濃度Ｓ
Ｓ排水処理プロセスと多水量高濃度ＳＳ排水処理プロセ
スの切り替えの時期を、降雨量情報で判定することを特
徴とするヤード排水のＳＳ除去処理方法。 （４）．（１）または（２）において、少水量低濃度Ｓ
Ｓ排水処理プロセスと多水量高濃度ＳＳ排水処理プロセ
スの切り替えの時期を、これらの排水処理プロセスの前
段の原水槽または調整槽の水位レベルで判定することを
特徴とするヤード排水のＳＳ除去処理方法。 （５）．濾過もしくは凝集濾過による少水量低濃度ＳＳ
排水処理プロセスと凝集沈殿による多水量高濃度ＳＳ排
水処理プロセスを併用する、ＳＳを含むヤード排水の処
理方法であって、多水量ＳＳ排水処理プロセスの前段に
晴天時の少水量低濃度ＳＳ排水プロセスを直列配置し、
少水量で低濃度のＳＳを含む排水と、多水量で高濃度の
ＳＳを含む排水を、まず少水量低濃度ＳＳ排水処理プロ
セスで処理し、ついで多水量高濃度ＳＳ排水処理プロセ
スで処理することを特徴とするヤード排水のＳＳ除去処
理方法。 （６）．濾過もしくは凝集濾過による少水量低濃度ＳＳ
排水処理プロセスと凝集沈殿による多水量高濃度ＳＳ排
水処理プロセスを併用する、ＳＳを含むヤード排水の処
理方法であって、晴天時の少水量低濃度ＳＳ排水プロセ
スの前段に多水量高濃度ＳＳ排水処理プロセスを直列配
置し、少水量で低濃度のＳＳを含む排水と、多水量で高
濃度のＳＳを含む排水を、まず多水量高濃度ＳＳ排水処
理プロセスでで処理し、ついで少水量低濃度ＳＳ排水処
理プロセスで処理することを特徴とするヤード排水のＳ
Ｓ除去処理方法。 （７）．（１）〜（６）のいずれかにおいて、少水量低
濃度ＳＳ排水処理プロセスの濾過機の逆洗水を、多水量
高濃度ＳＳ排水処理プロセスに導入して処理することを
特徴とするヤード排水のＳＳ除去処理方法。Means for Solving the Problems The present invention provides the following (1) to
It comprises the invention of (7). (1). Low water and low concentration SS by filtration or coagulation filtration
A method for treating yard wastewater containing SS by switching between a wastewater treatment process and a high-water-content, high-concentration SS wastewater treatment process during rainy weather due to coagulation sedimentation. The wastewater is treated by the low-water / low-concentration SS wastewater treatment process, and the yard wastewater containing a large amount of water and high-concentration SS when the reference rainfall is exceeded is treated by the high-water / high concentration SS wastewater treatment process. SS removal treatment method for yard wastewater. (2). Low water and low concentration SS by filtration or coagulation filtration
This is a method for treating yard wastewater containing SS, using both a wastewater treatment process and a multi-volume SS wastewater treatment process by coagulation sedimentation. In rainy weather, high-density and high-concentration SS wastewater is overflowed (or bypassed) into the high- and high-concentration SS wastewater treatment process. A method for removing yard wastewater from SS, wherein the method is used in combination with a process. (3). In (1) or (2), low water content low concentration S
A SS removal treatment method for yard wastewater, wherein the timing of switching between the S wastewater treatment process and the multi-water / high-concentration SS wastewater treatment process is determined based on rainfall information. (4). In (1) or (2), low water content low concentration S
A yard wastewater SS removal treatment method, characterized in that the timing of switching between the S wastewater treatment process and the multi-water / high-concentration SS wastewater treatment process is determined based on the water level of a raw water tank or a regulating tank preceding the wastewater treatment process. . (5). Low water and low concentration SS by filtration or coagulation filtration
This is a method for treating yard wastewater containing SS, using both a wastewater treatment process and a multi-water high-concentration SS wastewater treatment process by coagulation sedimentation. Are arranged in series,
Wastewater containing low-volume, low-concentration SS and wastewater containing high-volume, high-concentration SS are first treated with a low-volume, low-concentration SS wastewater treatment process, and then treated with a multi-volume, high-concentration SS wastewater treatment process. A method for removing SS from yard wastewater, comprising: (6). Low water and low concentration SS by filtration or coagulation filtration
This is a method for treating yard wastewater containing SS, using both a wastewater treatment process and a multi-water, high-concentration SS wastewater treatment process by coagulation sedimentation. The treatment process is arranged in series, and the wastewater containing a small amount of low-concentration SS and the large amount of wastewater containing high-concentration SS are first treated in a multi-water high-concentration SS wastewater treatment process, and then a small amount of low-concentration SS is treated. S in yard wastewater characterized by being treated in the SS wastewater treatment process
S removal processing method. (7). (1) The yard wastewater according to any one of (1) to (6), wherein the backwash water of the filter in the low water content low concentration SS wastewater treatment process is introduced into the high water content high concentration SS wastewater treatment process for treatment. SS removal method.
【０００９】[0009]
【発明の実施の形態】本発明は、主として粉粒体を貯蔵
する野外ヤードからの排水のＳＳ除去処理方法であり、
凝集濾過による少水量低濃度ＳＳ排水処理プロセスと、
凝集沈殿による多水量高濃度ＳＳ排水処理プロセスを用
いて処理するものであり、基本的には、少水量でＳＳ濃
度の低い晴天時（ここでは、降雨のない時、降雨量が少
なくて粉粒体が乾燥状態で飛散する状態にある時を意味
し、以下「晴天時」という。）の排水処理には、少水量
低濃度ＳＳ排水処理プロセスを用い、多水量でＳＳ濃度
の高い雨天時の排水には、多水量高濃度ＳＳ排水処理プ
ロセスを用いるものである。BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a method for removing SS from wastewater from an outdoor yard for mainly storing granular materials,
A low water volume low concentration SS wastewater treatment process by coagulation filtration,
It is treated using a high-water-volume, high-concentration SS wastewater treatment process by coagulation and sedimentation. Basically, when the water is small and the SS concentration is fine (here, when there is no rainfall, there is little rainfall, When the body is in a dry and scattered state, hereinafter referred to as "fine weather".) For the wastewater treatment, a small water volume low concentration SS wastewater treatment process is used. For wastewater, a multi-water high-concentration SS wastewater treatment process is used.
【００１０】本発明では、少水量低濃度ＳＳ排水処理プ
ロセスには、凝集濾過プロセスを用いるので、晴天時の
ＳＳ濃度が低い時には２００ｍｇ／リットル以下の比較
的低濃度の排水に対して、そのＳＳ濃度に見合う凝集剤
が多少不足していても、濾材間に捕捉されているＳＳフ
ロックにＳＳが容易に吸着・捕捉され、ＳＳの除去が確
実に行われるので、凝集剤の使用量を従来より５０％程
度少なくすることができる。In the present invention, the coagulation filtration process is used in the low-water-volume, low-concentration SS wastewater treatment process. Therefore, when the SS concentration in fine weather is low, the SS water is treated with a relatively low concentration of 200 mg / liter or less. Even if the coagulant corresponding to the concentration is somewhat insufficient, the SS is easily adsorbed and trapped on the SS flocs trapped between the filter media, and the SS is reliably removed. It can be reduced by about 50%.
【００１１】本発明で用いる凝集濾過プロセスの濾過機
としては、天然砂や浮上濾材を濾材として用いる周知の
各種濾過機を用いることができるが、濾過機能を安定確
保する上で、濾材を気体や液体で逆洗する構造を有する
ものが有利である。本発明で用いる凝集剤としては、有
機物の高分子凝集剤が多く、他にポリ塩化アルミニウム
（ＰＡＣ）などの無機凝集剤、陽イオン性または陰イオ
ン性の界面活性剤などを用いることができる。濾材とし
ては、天然砂が一般的であるが、この限りではない。As the filter for the coagulation filtration process used in the present invention, various known filters using natural sand or a floating filter medium as a filter medium can be used. Those having a structure for backwashing with a liquid are advantageous. As the coagulant used in the present invention, there are many organic polymer coagulants, and in addition, an inorganic coagulant such as polyaluminum chloride (PAC), a cationic or anionic surfactant, and the like can be used. Natural sand is generally used as a filter medium, but is not limited to this.
【００１２】ここで、少水量で低濃度のＳＳを含む排水
に対して、濾過もしくは凝集濾過プロセスに代えて凝集
沈殿プロセスを適用した場合には、生成するＳＳフロッ
クは、結合力の小さい微細なもので軽いため、沈殿池か
ら容易に流出してしまい、ＳＳの除去を確実に行なうこ
とは難しい。また、本発明では、多水量高濃度ＳＳ排水
処理プロセスには、凝集沈殿プロセスを用いるので、対
象流量に応じた容量の沈殿池が必要ではあるが、土木構
造物でスケールメリットがあり、容量増加の割合で設備
費が増加しないメリットがあり、大型化も容易である。
本発明で凝集沈殿に用いる沈殿池としては、横流式沈殿
池や円形沈殿池などの周知の各種の沈殿池を用いること
ができる。Here, when a flocculation and sedimentation process is applied to wastewater containing a small amount of water and containing a low concentration of SS, instead of the filtration or the coagulation filtration process, the generated SS floc has a fine bonding force with a small bonding force. As it is light, it easily flows out of the sedimentation basin, and it is difficult to reliably remove SS. Further, in the present invention, the coagulation settling process is used in the multi-water high-concentration SS wastewater treatment process, so a sedimentation basin having a capacity according to the target flow rate is required. There is a merit that the equipment cost does not increase at the ratio, and it is easy to increase the size.
Various well-known sedimentation basins such as a horizontal flow sedimentation basin and a circular sedimentation basin can be used as the sedimentation basin used for the coagulation sedimentation in the present invention.
【００１３】本発明では、基本的には、ヤードからの排
水量（晴天時の散水量、雨天時の降雨量）に応じて、少
水量低濃度ＳＳ排水処理プロセスと多水量高濃度ＳＳ排
水処理プロセスを切り替え使用するものであるが、少水
量低濃度ＳＳ排水処理プロセスと多水量高濃度ＳＳ排水
処理プロセスを直列に配置して併用して処理を分担し、
相互にバックアップできるようにすることも考慮してい
る。According to the present invention, basically, a small water volume low concentration SS waste water treatment process and a large water volume high concentration SS waste water treatment process are performed in accordance with the amount of water discharged from the yard (spray amount in fine weather, rainfall in rainy weather). However, the low-water-concentration low-concentration SS wastewater treatment process and the high-water-concentration high-concentration SS wastewater treatment process are arranged in series and used in combination.
We are also considering to be able to back up each other.
【００１４】また、凝集濾過による少水量低濃度ＳＳ排
水処理プロセスにおいては、濾過機を逆洗するようにな
っているが、この逆洗後のＳＳを含む逆洗水は、多水量
高濃度ＳＳ排水処理プロセスに導入して、多水量高濃度
ＳＳ排水とともに処理することが設備コスト負担、処理
コスト負担を軽減する上で有効である。Further, in the low-volume, low-concentration SS wastewater treatment process by coagulation filtration, the filter is backwashed. It is effective to introduce it into the wastewater treatment process and treat it together with the SS wastewater with high water content and high concentration in order to reduce the burden on equipment costs and the burden on treatment costs.
【００１５】本発明では、凝集濾過による少水量低濃度
ＳＳ排水処理プロセスと、凝集沈殿による多水量高濃度
ＳＳ排水処理プロセスの切り替えは、ヤードからの排水
量（ｔ／ｈｒ）が切り替え条件を満たしたとき（散水の
排水量レベルか、基準降雨量を超えた排水量レベルかの
判定基準に該当時・・・予め判定基準を設定する）、手
動または自動的に行うものであるが、この排水量を判定
する手段としては、 （１）目視で判定する。 （２）晴天時の散水量でヤードからの排水量を推定す
る。 （３）降雨情報（当該地域の降雨予報または当該地域の
降雨量実績）でヤードからの排水量を推定する。 （４）排水処理プロセスの前段の原水槽や調整槽の水位
を検知してヤードからの排水量を推定する。 （２）〜（４）では、排水量推定システムと切替システ
ムを連動させることにより少水量低濃度ＳＳ排水処理プ
ロセスと凝集沈殿による多水量高濃度ＳＳ排水処理プロ
セスを自動切替することも可能である。In the present invention, the switching between the low-water-volume, low-concentration SS wastewater treatment process by coagulation filtration and the high-water-volume, high-concentration SS wastewater treatment process by coagulation sedimentation satisfies the switching condition by the amount of wastewater from the yard (t / hr). At this time (when a criterion for determining whether the level of water discharge is a drainage level or a drainage level exceeding the reference rainfall amount is set ... the determination criterion is set in advance), the drainage amount is determined manually or automatically. The means are as follows: (1) Judge visually. (2) Estimate the amount of drainage from the yard based on the amount of water sprayed in fine weather. (3) Estimate the drainage amount from the yard based on the rainfall information (rainfall forecast in the area or actual rainfall in the area). (4) Estimate the amount of drainage from the yard by detecting the water level in the raw water tank and adjustment tank at the stage preceding the wastewater treatment process. In (2) to (4), it is also possible to automatically switch between the low-water-volume, low-concentration SS wastewater treatment process and the high-water-volume, high-concentration SS wastewater treatment process by coagulation sedimentation by linking the wastewater volume estimation system and the switching system.
【００１６】本発明では、ＳＳを多量に含むヤード排水
を処理対象としているが、例えば、色度、ｐＨ、油、Ｃ
ＯＤ（化学的酸素要求量）も併せて処理対象とする場合
もあり、この場合には、凝集反応槽に、凝集剤の他にＮ
ａＯＨなどの反応処理剤の添加を含む追加的プロセスが
あるが、この場合にも本発明の適用に問題はない。In the present invention, yard wastewater containing a large amount of SS is treated. For example, chromaticity, pH, oil, C
In some cases, OD (chemical oxygen demand) may also be treated. In this case, in addition to the flocculant, N
There are additional processes involving the addition of a reaction treating agent such as aOH, but again there is no problem with the application of the present invention.
【００１７】[0017]
【実施例】以下に本発明を、設備配置例とともに説明す
る。 （実施例１）図１は、本発明を実施する鉄鉱石貯蔵ヤー
ドの排水処理設備の配置例を示すものである。図１は晴
天時の少水量で低濃度ＳＳを含む排水を処理している場
合を示し、図２は、雨天時の多水量で高濃度ＳＳを含む
排水を処理している場合を示している。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below together with an example of equipment arrangement. (Embodiment 1) FIG. 1 shows an example of an arrangement of a wastewater treatment facility in an iron ore storage yard embodying the present invention. FIG. 1 shows a case where wastewater containing low concentration SS is treated with a small amount of water in fine weather, and FIG. 2 shows a case where wastewater containing high concentration SS is treated with a large amount of water in rainy weather. .
【００１８】図１、図２において、１はヤード２に貯蔵
された鉄鉱石、３は散水によって発生したＳＳを含むヤ
ード排水で、Ｕ字溝４を経て原水槽５に集め、ポンプＰ
ａにより調整槽６を経て、凝集剤７や処理剤８を添加し
て撹拌機９ａで撹拌処理する反応槽１０ａと給水Ｗして
撹拌機９ｂで撹拌処理してＳＳフロックを生長させる凝
集槽１０ｂからなる凝集反応槽１０に導入する。凝集反
応槽１０で反応・凝集処理され生長したＳＳフロックを
含む排水を、本発明の排水処理プロセスに導入して処理
する。1 and 2, reference numeral 1 denotes iron ore stored in the yard 2 and 3 denotes yard wastewater containing SS generated by watering, which is collected in a raw water tank 5 through a U-shaped groove 4 and pump P
a, a coagulating agent 7 and a treating agent 8 are added to the reaction tank 10a for stirring by a stirrer 9a, and a water supply W, and a coagulating tank 10b for growing an SS floc by stirring by a stirrer 9b. Into the agglutination reaction tank 10 consisting of The wastewater containing SS flocs that have been reacted and agglomerated in the agglutination reaction tank 10 are introduced into the wastewater treatment process of the present invention for treatment.
【００１９】この実施例では、反応・凝集処理後の排水
処理プロセスは、凝集反応槽１０からの生長したＳＳフ
ロックを含む排水を濾過する濾材及びエアーを用いた、
逆洗構造を備えた濾過機１３と、この濾過機を逆洗水で
逆洗して濾過機能を維持する逆洗装置１４ａ（供給
側）、１４ｂ（排出側）からなる少水量低濃度ＳＳ排水
処理プロセスＡと、凝集反応槽１０と連絡管１５ａによ
り接続され、凝集反応槽１０からの生長したＳＳフロッ
クを含む排水を沈殿処理してＳＳフロックを沈殿除去す
る沈殿池１１ａからなる多水量高濃度ＳＳ排水処理プロ
セスＢとを並列的に配置している。In this embodiment, the wastewater treatment process after the reaction / coagulation treatment uses a filter medium and air for filtering wastewater containing SS flocs grown from the coagulation reaction tank 10.
A low-concentration, low-concentration SS drain comprising a filter 13 having a backwash structure and a backwash device 14a (supply side) and 14b (discharge side) for backwashing the filter with backwash water and maintaining a filtering function. The treatment process A is connected to the agglutination reaction tank 10 by a connecting pipe 15a, and is a multi-water, high-concentration sedimentation basin 11a configured to perform a sedimentation treatment on wastewater containing SS flocs grown from the agglutination reaction tank 10 to precipitate and remove SS flocs. The SS wastewater treatment process B is arranged in parallel.
【００２０】少水量低濃度ＳＳ排水処理プロセスＡは、
基本的には、晴天時の少水量で低濃度ＳＳを含む排水を
処理するためのものであり、多水量高濃度ＳＳ排水処理
プロセスＢは、降雨量が基準降雨量を超えた場合の多水
量で高濃度ＳＳを含む排水を処理するものであるが、こ
こでは、 （１）晴天時の少水量低濃度ＳＳ排水処理プロセスＡ単
独（晴天時） （２）雨天時の多水量高濃度ＳＳ排水処理プロセスＢ単
独（雨天時） （３）晴天時の少水量低濃度ＳＳ排水処理プロセスＡと
雨天時の多水量高濃度ＳＳ排水処理プロセスＢを併用
（雨天時） の３通りの排水処理プロセスに手動切替えまたは自動切
替え可能にしている。The low-concentration, low-concentration SS wastewater treatment process A comprises:
Basically, it is for treating wastewater containing low-concentration SS with a small amount of water in fine weather. The high-water-concentration high-concentration SS wastewater treatment process B uses a large amount of water when the rainfall exceeds the reference rainfall. The wastewater containing high-concentration SS is treated as follows: (1) Low-water-concentration, low-concentration SS wastewater treatment process A alone in fine weather (in fine weather) (2) High-water-content, high-concentration SS wastewater in rainy weather Treatment process B alone (in rainy weather) (3) Combined use of low-concentration low-concentration SS wastewater treatment process A in fine weather and high-concentration high-concentration SS wastewater treatment process B in rainy weather (in rainy weather) Manual switching or automatic switching is possible.
【００２１】以下に（１）〜（３）の排水処理について
説明する。 ［（１）による晴天時の少水量低濃度ＳＳ排水処理プロ
セスＡによる排水処理］図１に示すように、散水によっ
て発生したＳＳを含むヤード排水３は、Ｕ字溝４を経て
原水槽５に集め、ポンプＰａにより調整槽６に導入し、
ポンプＰｂにより凝集剤７や処理剤８を添加して撹拌機
９ａで撹拌処理する反応槽１０ａと給水Ｗして撹拌機９
ｂで撹拌処理してＳＳフロックを生長させる凝集槽１０
ｂからなる凝集反応槽１０に導入して処理する。反応凝
集処理され生長したＳＳフロックを含む排水３を、切替
弁Ｖａを開にし、ポンプＰ1 により、晴天時の少水量低
濃度ＳＳ排水処理プロセスＡの濾過機１３に導入して濾
過し、濾過した排水３を水槽１２経由で放流する。Hereinafter, the drainage treatments (1) to (3) will be described. [Sewage treatment by low-concentration low-concentration SS wastewater treatment process A in fine weather according to (1)] As shown in FIG. 1, yard wastewater 3 containing SS generated by watering passes through a U-shaped groove 4 to a raw water tank 5. Collected, introduced into the adjusting tank 6 by the pump Pa,
A coagulant 7 and a treating agent 8 are added by a pump Pb, and a reaction tank 10a for performing a stirring treatment by a stirrer 9a is supplied with water W to a stirrer 9
Coagulation tank 10 for growing SS flocks by stirring in b
b) into the coagulation reaction tank 10 for treatment. The drainage 3 containing the SS flocs grown by the reaction coagulation treatment is introduced into the filter 13 of the process A for fine SS low-concentration SS wastewater treatment process A by opening the switching valve Va, opening the switching valve Va, and filtering. The drainage 3 is discharged via the water tank 12.
【００２２】濾過機１３には、濾過の都度、懸濁物量が
抑留され、この懸濁物量が一定のレベルまで増えると、
濾過抵抗が大きくなって濾過機能が低下し、懸濁物量が
漏出して濾過水質が悪化するので、濾過機１３を、適
時、逆洗装置１４ａからの逆洗水及びエアーで逆洗し
て、濾過機能の低下を防止する。洗浄後の懸濁物を含む
逆洗水は、ここでは沈殿池１１ａに導入して沈殿処理す
るようにしているが、沈殿池１１ａ外に排出するように
してもよい。In the filter 13, the amount of suspended matter is restrained each time filtration is performed. When the amount of suspended matter increases to a certain level,
Since the filtration resistance increases and the filtration function decreases, the amount of suspended solids leaks out and the quality of the filtered water deteriorates. Therefore, the filter 13 is appropriately backwashed with backwash water and air from the backwash device 14a, Prevents deterioration of filtration function. In this case, the backwash water containing the suspended matter after washing is introduced into the sedimentation basin 11a to perform the precipitation treatment, but may be discharged to the outside of the sedimentation basin 11a.
【００２３】この（１）の排水処理プロセスは、凝集効
率が良好で凝集剤の使用量が少なくてすむ濾過凝集を用
いており、凝集剤７の使用量を、沈殿凝集のみの場合に
比較して大幅に節減することができるもので、晴天時の
少水量低濃度ＳＳ排水の処理に適している。The wastewater treatment process (1) employs filtration agglomeration, which has good coagulation efficiency and requires a small amount of coagulant. The amount of coagulant 7 used is compared with the case of only sedimentation coagulation. It is suitable for treating low-concentration low-concentration SS wastewater in fine weather.
【００２４】［（２）による雨天時の多水量高濃度ＳＳ
排水処理プロセスＢによる排水処理］図２に示すよう
に、降雨によって発生したＳＳを含むヤード排水３を、
Ｕ字溝４を経て原水槽５に集め、ポンプＰａにより調整
槽６に導入し、ポンプＰｂにより凝集剤７や処理剤８を
添加して撹拌機９ａで撹拌処理する反応槽１０ａと給水
Ｗして撹拌機９ｂで撹拌処理しＳＳフロックを生長させ
る凝集槽１０ｂとからなる凝集反応槽１０に導入して処
理する。[2] High water content high concentration SS in rainy weather according to (2)
Wastewater treatment by wastewater treatment process B] As shown in FIG. 2, yard wastewater 3 containing SS generated by rainfall is
The water is collected in the raw water tank 5 through the U-shaped groove 4, introduced into the adjusting tank 6 by the pump Pa, the coagulant 7 and the treating agent 8 are added by the pump Pb, and the water is supplied to the reaction tank 10 a for stirring by the stirrer 9 a. Then, the mixture is introduced into an agglutination reaction tank 10 composed of an agitation tank 10b for agitating and growing SS flocs by agitation processing with a stirrer 9b.
【００２５】雨天時には、降雨により原水槽５、調整槽
６、反応凝集槽１０の水位レベルが高くなるので、例え
ば原水槽５の水位計１６ａで水位レベルを検知し、この
水位が一定レベル以上になった場合には、切替弁Ｖａを
閉とし晴天時の少水量低濃度ＳＳ排水処理プロセスＡを
閉とするとともに、切替弁Ｖｂを開にして、多水量高濃
度ＳＳ排水処理プロセスＢを開とし、反応凝集槽１０か
らの生長したＳＳフロックを含むＳＳ排水を、連絡管１
５経由で沈殿池１１ａに導入する。In rainy weather, the water level of the raw water tank 5, the adjusting tank 6, and the reaction coagulation tank 10 becomes high due to the rainfall. For example, the water level is detected by the water level gauge 16a of the raw water tank 5, and the water level becomes higher than a certain level. In the case of becoming, the switching valve Va is closed and the small water amount low concentration SS drainage treatment process A in fine weather is closed, and the switching valve Vb is opened to open the large water amount high concentration SS wastewater treatment process B. The SS wastewater containing the grown SS flocs from the reaction coagulation tank 10 is connected to the connecting pipe 1.
5 to the settling basin 11a.
【００２６】降雨が止んで排水量が減少し、晴天時の排
水量レベルになった場合には、切り替弁Ｖａを開にして
晴天時の少水量低濃度ＳＳ排水処理プロセスＡを開にす
る。反応凝集槽１０への凝集剤７の添加量は、ただちに
増加させる必要はなく、晴天になって、鉄鉱石が乾燥状
態になって散水が必要な状態になってから増加させるよ
うにすればよい。When the rainfall stops and the amount of drainage decreases and reaches the level of the amount of water discharged in fine weather, the switching valve Va is opened to open the small water flow low concentration SS wastewater treatment process A in fine weather. The amount of the coagulant 7 added to the reaction coagulation tank 10 does not need to be increased immediately, but may be increased after the weather becomes clear and the iron ore is in a dry state and watering is required. .
【００２７】この（２）の排水処理プロセスにおいて
は、沈殿池１１ａを用いた凝集沈殿処理を行うが、ＳＳ
濃度の高い雨天時のヤード排水の処理を、ＳＳ濃度の低
い晴天時のヤード排水の処理と区別して行うので、凝集
剤の使用量を少なくしても凝集剤の使用量を節減するこ
とができ、ＳＳ濃度の低い晴天時のヤード排水の処理と
ＳＳ濃度の高い雨天時のヤード排水の処理を、同様にし
て行う従来の場合に比較して、凝集剤の使用量を節減す
ることができる。In the wastewater treatment process (2), coagulation and sedimentation using the sedimentation basin 11a is performed.
The treatment of yard wastewater with high concentration in rainy weather is performed separately from the treatment of yard wastewater in fine weather with low SS concentration, so the amount of coagulant used can be reduced even if the amount of coagulant used is reduced. The amount of the coagulant used can be reduced as compared with the conventional case in which the treatment of the yard wastewater in fine weather with a low SS concentration and the treatment of the yard wastewater in rainy weather with a high SS concentration are performed in the same manner.
【００２８】［（３）による晴天時の少水量低濃度ＳＳ
排水処理プロセスＡと雨天時の多水量高濃度ＳＳ排水処
理プロセスＢを併用する排水処理］この排水処理は、図
１に示すように、散水によって発生したＳＳを含むヤー
ド排水３を晴天時の少水量低濃度ＳＳ排水処理プロセス
Ａで処理中に、降雨があった場合に、この排水処理プロ
セスＡの切替弁Ｖａを開の状態にしたまま、図２に示す
ように、雨天時の多水量高濃度ＳＳ排水処理プロセスＢ
の切替弁Ｖｂを開にして、この排水処理プロセスＢを開
の状態にして、排水処理プロセスＡと排水処理プロセス
Ｂとを併用して処理するものである。According to (3), fine water content and low concentration SS in fine weather
Wastewater treatment using both wastewater treatment process A and high-water-density SS wastewater treatment process B in rainy weather] As shown in FIG. 1, this wastewater treatment reduces yard wastewater 3 containing SS generated by watering, If there is rainfall during the treatment in the low-concentration SS wastewater treatment process A, as shown in FIG. 2, while the switching valve Va of the wastewater treatment process A is open, as shown in FIG. Concentration SS wastewater treatment process B
Is opened, the wastewater treatment process B is opened, and the wastewater treatment process A and the wastewater treatment process B are used in combination.
【００２９】この例では、排水処理プロセスＡから排水
処理プロセスＢへ切り替える場合、切替弁Ｖｂを設けて
開動作するようにしているが、切替弁Ｖｂは不可欠では
なく、図３に示すように、水位レベルが上昇した時に反
応凝集槽１０の生長したＳＳフロックを含むＳＳ排水
を、オーバーフロー管１７経由でオーバーフローさせて
沈殿池１１ａに導入するようにしてもよい。In this example, when switching from the wastewater treatment process A to the wastewater treatment process B, the switching valve Vb is provided so as to open, but the switching valve Vb is not indispensable, and as shown in FIG. When the water level rises, the SS wastewater containing the SS flocs grown in the reaction coagulation tank 10 may overflow through the overflow pipe 17 and be introduced into the sedimentation basin 11a.
【００３０】ここでは、降雨があってヤード排水が増加
し、反応凝集槽１０で処理され生長したＳＳフロックを
含む排水の反応凝集槽１０での水位が上昇した時に、こ
の排水をオーバーフロー管１７から自然にオーバーフロ
ーさせて、このオーバーフロー分を雨天時の多水量高濃
度ＳＳ排水処理プロセスＢに導入して沈殿池１１ａで凝
集沈殿処理するようにしたものである。この降雨による
たヤード排水３は、更にＳＳ濃度が低い排水になるた
め、ＳＳフロックの生長のための凝集剤７の添加量を少
なく変更する。Here, when the yard drainage increases due to the rainfall and the water level of the wastewater containing SS flocs that have been processed and grown in the reaction coagulation tank 10 rises in the reaction coagulation tank 10, the drainage is discharged from the overflow pipe 17. The water is allowed to overflow naturally, and the overflow is introduced into the multi-water / high-concentration SS wastewater treatment process B during rainy weather, and is subjected to coagulation and sedimentation in the sedimentation basin 11a. Since the yard wastewater 3 resulting from the rainfall has a lower SS concentration, the amount of the flocculant 7 added for growing SS flocs is changed to be smaller.
【００３１】この（３）の排水処理プロセスにおいて
は、凝集効率が良好で凝集剤の使用量が少なくてすむ凝
集濾過と、凝集沈殿を併用しており、凝集剤の使用量
を、凝集沈殿のみの場合に比較して大幅に節減すること
ができる。In the wastewater treatment process (3), coagulation filtration and coagulation sedimentation, which have good coagulation efficiency and require less coagulant, are used in combination. In this case, the cost can be significantly reduced.
【００３２】（実施例２）図４は、この実施例２の排水
処理設備の配置例を示す。この実施例２では、凝集反応
槽１０に晴天時の少水量低濃度ＳＳ排水処理プロセスＡ
（以下「排水処理プロセスＡ」という。）を接続し、そ
の後段に雨天時の多水量高濃度ＳＳ排水処理プロセスＢ
（以下「排水処理プロセスＢ」という。）を直列的に接
続して、凝集反応槽１０からの生長したＳＳフロックを
含む排水を、まず排水処理プロセスＡで処理し、ついで
排水処理プロセスＢで沈殿処理するようにしたものであ
る。(Embodiment 2) FIG. 4 shows an example of the arrangement of wastewater treatment equipment according to Embodiment 2. In the second embodiment, the coagulation reaction tank 10 has a small water volume and low concentration SS wastewater treatment process A in fine weather.
(Hereinafter referred to as "Wastewater treatment process A"), and the subsequent stage is a wastewater treatment process B with high water content and high concentration SS in rainy weather.
(Hereinafter, referred to as “wastewater treatment process B”) in series, and the wastewater containing the grown SS flocs from the coagulation reaction tank 10 is first treated in the wastewater treatment process A, and then settled in the wastewater treatment process B. This is to be processed.
【００３３】この実施例２では、晴天時の少水量で低濃
度ＳＳを含む排水も雨天時の多水量で高濃度ＳＳを含む
排水も、排水処理プロセスＡと、その後段に接続した雨
天時の排水処理プロセスＢで同様にして処理するもので
ある。この実施例２では、晴天時の少水量で低濃度ＳＳ
を含む排水を処理する際に、排水処理プロセスＡの凝集
濾過プロセスの逆洗のインターバルが長くなった場合
に、ＳＳ捕捉限界を超えて濾過機１３からＳＳフロック
が流出した場合、後段の排水処理プロセスＢの沈殿処理
で確実に除去することもできる。In the second embodiment, both wastewater containing a small amount of water and low concentration SS in fine weather and wastewater containing a large amount of water and high concentration SS in rainy weather are treated with the wastewater treatment process A and the rainwater treatment process connected to the subsequent stage. In the wastewater treatment process B, the same treatment is performed. In the second embodiment, a small amount of water in fine weather and a low concentration SS
When the wastewater containing wastewater is treated, if the backwash interval of the coagulation filtration process of the wastewater treatment process A becomes long, and if the SS flocs flow out of the filter 13 beyond the SS trapping limit, It can also be reliably removed by the precipitation treatment in the process B.
【００３４】（実施例３）図５は、この実施例３の排水
処理設備の配置例を示す。この実施例３では、凝集反応
槽１０に雨天時の排水処理プロセスＢの沈殿池１１ｂを
接続し、その後段に排水処理プロセスＡを直列に接続し
て、その後段に雨天時の排水処理プロセスＢの沈殿池１
１ａを直列的に接続して、凝集反応槽１０からの生長し
たＳＳフロックを含む排水を、まず排水処理プロセスＢ
の沈殿池１１ｂで凝集沈殿処理し、ついで排水処理プロ
セスＡで処理してから沈殿池１１ａで沈殿処理するよう
にしたものである。(Embodiment 3) FIG. 5 shows an example of the arrangement of wastewater treatment equipment according to Embodiment 3. In Example 3, the sedimentation basin 11b of the wastewater treatment process B during rainy weather is connected to the coagulation reaction tank 10, the wastewater treatment process A is connected in series at the subsequent stage, and the wastewater treatment process B during rainy weather is provided at the subsequent stage. Sedimentation basin 1
1a are connected in series, and the wastewater containing the grown SS flocs from the coagulation reaction tank 10 is first discharged to wastewater treatment process B.
The sedimentation treatment is performed in the sedimentation basin 11b, followed by the wastewater treatment process A, and then the sedimentation treatment in the sedimentation basin 11a.
【００３５】この実施例３では、晴天時の少水量で低濃
度ＳＳを含む排水も雨天時の多水量で高濃度ＳＳを含む
排水も、排水処理プロセスＢと、その後段に接続した排
水処理プロセスＡで同様にして処理するものである。こ
の実施例では、晴天時の少水量で低濃度ＳＳを含む排水
を処理する際に、まず排水処理プロセスＢで凝集沈殿処
理して、粗ＳＳを除去してから後段の排水処理プロセス
Ａに導入し、凝集濾過して除去するようにしており、排
水処理プロセスＡでの負荷を軽減することができる。ま
た、排水処理プロセスＢによる凝集沈殿処理を先行させ
るため、晴天時にも反応凝集槽１０での凝集剤の使用量
を少なくすることができ、凝集剤７の使用量を大幅に節
減することができる。In the third embodiment, a wastewater treatment process B and a wastewater treatment process connected to the subsequent stage are used for both wastewater containing a small amount of water and low concentration SS in fine weather and wastewater containing a large amount of water and high concentration SS in rainy weather. A performs similar processing. In this embodiment, when treating wastewater containing a low concentration of SS with a small amount of water in fine weather, the wastewater treatment process B first performs coagulation and sedimentation treatment, removes coarse SS, and then introduces the wastewater into the subsequent wastewater treatment process A. Then, the wastewater is removed by coagulation filtration, so that the load in the wastewater treatment process A can be reduced. Further, since the coagulation and sedimentation treatment by the wastewater treatment process B precedes, the use amount of the coagulant in the reaction coagulation tank 10 can be reduced even in fine weather, and the use amount of the coagulant 7 can be greatly reduced. .
【００３６】[0036]
【実験例】実施例１（図１、図２）のような設備配置例
を用いて、鉄鉱石ヤードの晴天時の散水による排水と雨
天時の降雨による排水のＳＳ除去処理を行った。実験条
件と実験結果の評価について以下に説明する。[Experimental Example] Using the equipment arrangement example as in Example 1 (FIGS. 1 and 2), SS removal processing of drainage caused by watering in an iron ore yard in fine weather and drainage caused by rainfall in rainy weather were performed. The experimental conditions and the evaluation of the experimental results will be described below.
【００３７】［実験条件］ 鉄鉱石ヤード ヤード面積 ：３００，０００ｍ3 排水のＳＳ濃度 晴天時の散水排水：２００ｍｇ／リットル 雨天時の降雨排水：５００ｍｇ／リットル 排水処理量 晴天時の散水排水：３ｍ3 ／分 雨天時の降雨排水：２０ｍ3 ／分 凝集剤：ＰＡＣ、高分子凝集剤 濾過機 処理能力：３ｍ3 ／分 沈殿池（水平横流式） 容量：１，０００ｍ3 ［評価］ 従来との比較 凝集剤の使用量：従来の５０％以下に節減 ＳＳ濃度：１０ｍｇ／リットル、従来は２０ｍｇ／リッ
トル[Experimental conditions] Iron ore yard Yard area: 300,000 m 3 SS concentration of drainage Sprinkling drainage in fine weather: 200 mg / L Rainfall drainage in rainy weather: 500 mg / L Wastewater treatment amount Spraying drainage in fine weather: 3 m 3 / Min Rainfall drainage in rainy weather: 20m 3 / min Coagulant: PAC, polymer flocculant Filtration capacity: 3m 3 / min Sedimentation basin (horizontal horizontal flow) Capacity: 1,000m 3 [Evaluation] Comparison with conventional Amount of coagulant used: reduced to 50% or less of the conventional SS concentration: 10 mg / liter, conventionally 20 mg / liter
【００３８】以上のように、本発明のヤード排水のＳＳ
除去処理方法においては、前記図５に示したような、従
来の凝集沈殿方式のヤード排水のＳＳ除去処理方法に比
較して、凝集剤の使用量を大幅に節減することができ、
処理コストを大幅に節減することができる。また、凝集
濾過プロセスを用いることにより、処理を安定させるこ
ともできる。なお、実施例２、実施例３の設備配置例に
よる場合には、さらに、これらの効果を確かなものにす
ることができる。As described above, the SS of the yard drainage of the present invention
In the removal treatment method, as shown in FIG. 5, compared with the conventional SS removal treatment method of the yard wastewater of the coagulation sedimentation method, the use amount of the flocculant can be greatly reduced,
Processing costs can be significantly reduced. Further, the treatment can be stabilized by using the coagulation filtration process. In addition, in the case of the arrangement example of the second and third embodiments, these effects can be further ensured.
【００３９】[0039]
【発明の効果】本発明では、濾過もしくは凝集濾過によ
る少水量低濃度ＳＳ排水処理プロセスと、凝集沈殿によ
る多水量高濃度ＳＳ排水処理プロセスを併用し、切り替
えまたは直列配置して処理するものであり、凝集剤のコ
スト負担を大幅に節減するとともに、安定した処理を行
うことができる。According to the present invention, the low-concentration low-concentration SS wastewater treatment process by filtration or coagulation filtration and the high-concentration high-concentration SS wastewater treatment process by coagulation sedimentation are used in combination and switched or arranged in series for treatment. In addition, the cost burden of the coagulant can be greatly reduced, and stable processing can be performed.
【図１】本発明のヤード排水処理方法を実施する、晴天
時の排水処理プロセスと雨天時の排水処理プロセスを切
り替え可能な排水処理設備例を示す側断面説明図で晴天
時の排水処理状態を示す。FIG. 1 is a side sectional explanatory view showing an example of a wastewater treatment facility capable of switching between a wastewater treatment process in fine weather and a wastewater treatment process in rainy weather, which implements the yard wastewater treatment method of the present invention. Show.
【図２】本発明のヤード排水処理方法を実施する、晴天
時の排水処理プロセスと雨天時の排水処理プロセスを切
り替え可能な排水処理設備例を示す側断面説明図で雨天
時の排水処理状態を示す。FIG. 2 is an explanatory side sectional view showing an example of a wastewater treatment facility capable of switching between a wastewater treatment process in fine weather and a wastewater treatment process in rainy weather, which implements the yard wastewater treatment method of the present invention. Show.
【図３】本発明のヤード排水処理方法を実施する晴天時
の排水処理プロセスと雨天時の排水処理プロセスを切り
替え可能な他の排水処理設備例を示す側断面説明図。FIG. 3 is an explanatory side sectional view showing another example of a wastewater treatment facility capable of switching between a wastewater treatment process in fine weather and a wastewater treatment process in rainy weather, which implements the yard wastewater treatment method of the present invention.
【図４】本発明のヤード排水処理方法を実施する晴天時
の排水処理プロセスと雨天時の排水処理プロセスを直列
配置する排水処理設備例を示す側断面説明図。FIG. 4 is an explanatory side sectional view showing an example of a wastewater treatment facility in which a wastewater treatment process in fine weather and a wastewater treatment process in rainy weather for implementing the yard wastewater treatment method of the present invention are arranged in series.
【図５】本発明のヤード排水処理方法を実施する晴天時
の排水処理プロセスと雨天時の排水処理プロセスを直列
配置する多の排水処理設備例を示す側断面説明図。FIG. 5 is an explanatory side sectional view showing an example of multiple wastewater treatment facilities in which a wastewater treatment process in fine weather and a wastewater treatment process in rainy weather for implementing the yard wastewater treatment method of the present invention are arranged in series.
【図６】従来のヤード排水処理方法を実施する排水処理
設備例を示す側断面説明図。FIG. 6 is an explanatory side sectional view showing an example of a wastewater treatment facility for implementing a conventional yard wastewater treatment method.
１ 鉄鉱石（粉粒体） ２ ヤード ３ ＳＳ排水 ４ Ｕ字溝 ５ 原水溝 ６ 調整槽 ７ 凝集剤 ８ 処理剤 ９、９ａ、９ｂ 撹拌器 １０ 反応凝集槽 １０ａ 反応槽 １０ｂ 凝集槽 １１、１１ａ、１１ｂ 沈殿池 １２ 水槽 １３ 濾過機 １４ａ、１４ｂ 逆洗装置 １５ 連絡管 １６ 水位計 １７ オーバーフロー管 Ｐａ、Ｐｂ、Ｐ1 ポンプDESCRIPTION OF SYMBOLS 1 Iron ore (powder and granular material) 2 yards 3 SS drainage 4 U-shaped ditch 5 Raw water ditch 6 Adjusting tank 7 Coagulant 8 Treatment agent 9, 9a, 9b Stirrer 10 Reaction coagulation tank 10a Reaction tank 10b Coagulation tank 11, 11a, 11b sedimentation 12 water tank 13 filter machine 14a, 14b backwash device 15 connecting pipe 16 water gauge 17 overflow pipe Pa, Pb, P 1 pump
───────────────────────────────────────────────────── フロントページの続き (72)発明者 ▲高▼橋 健二 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 Ｆターム(参考） 4D015 BA19 BA22 BB12 CA20 DA04 DB01 DB43 DB44 EA01 EA06 EA32 EA36 4D062 BA19 BA22 BB12 CA20 DA04 DB01 DB43 DB44 EA01 EA06 EA32 EA36 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenji Hashi 20-1 Shintomi, Futtsu-shi, Chiba F-term in the Technology Development Division, Nippon Steel Corporation 4D015 BA19 BA22 BB12 CA20 DA04 DB01 DB43 DB44 EA01 EA06 EA32 EA36 4D062 BA19 BA22 BB12 CA20 DA04 DB01 DB43 DB44 EA01 EA06 EA32 EA36
Claims (7)
度ＳＳ排水処理プロセスと凝集沈殿による雨天時の多水
量高濃度ＳＳ排水処理プロセスを切り替えて用いる、Ｓ
Ｓを含むヤード排水の処理方法であって、晴天時の散水
による少水量で低濃度のＳＳを含むヤード排水を前記少
水量低濃度ＳＳ排水処理プロセスで処理し、基準降雨量
を超えたときの多水量で高濃度のＳＳを含むヤード排水
を前記多水量高濃度ＳＳ排水処理プロセスで処理するこ
とを特徴とするヤード排水のＳＳ除去処理方法。1. An S wastewater treatment process comprising a low water content low concentration SS wastewater treatment process by filtration or coagulation filtration and a high water content high concentration SS wastewater treatment process during rainy weather by coagulation sedimentation.
A method for treating yard wastewater containing S, wherein the yard wastewater containing a small amount of low-concentration SS by sprinkling in fine weather is treated by the low-water-concentration low-concentration SS wastewater treatment process, and when a standard rainfall is exceeded. A yard wastewater containing a large amount of SS with a high water content and a high concentration is treated by the multi-water high concentration SS wastewater treatment process.
度ＳＳ排水処理プロセスと凝集沈殿による多水量ＳＳ排
水処理プロセスを併用する、ＳＳを含むヤード排水の処
理方法であって、晴天時の少水量で低濃度のＳＳ排水を
少水量低濃度ＳＳ排水処理プロセスで処理し、雨天時に
は、多水量で高濃度のＳＳ排水を多水量高濃度ＳＳ排水
処理プロセスにオーバーフロー（またはバイパス）させ
て導入し、少水量低濃度ＳＳ排水処理プロセスと多水量
高濃度ＳＳ排水処理プロセスを併用して処理することを
特徴とするヤード排水のＳＳ除去処理方法。2. A method for treating yard wastewater containing SS, wherein a low-water-volume, low-concentration SS wastewater treatment process by filtration or coagulation filtration is used in combination with a high-water-volume SS wastewater treatment process by coagulation sedimentation. Low-concentration SS wastewater is treated in a low-water-consumption, low-concentration SS wastewater treatment process. In rainy weather, large-volume, high-concentration SS wastewater is overflowed (or bypassed) into the high-consumption, high-concentration SS wastewater treatment process. A SS removal treatment method for yard wastewater, wherein the treatment is performed by using both a low-concentration SS wastewater treatment process and a high-consumption SS wastewater treatment process.
水量高濃度ＳＳ排水処理プロセスの切り替えの時期を、
降雨量情報で判定することを特徴とする請求項１または
請求項２に記載のヤード排水のＳＳ除去処理方法。3. The timing of switching between the low-water-volume, low-concentration SS wastewater treatment process and the high-water-volume, high-concentration SS wastewater treatment process,
3. The method for removing SS from yard wastewater according to claim 1, wherein the determination is made based on rainfall amount information.
水量高濃度ＳＳ排水処理プロセスの切り替えの時期を、
これらの排水処理プロセスの前段の原水槽または調整槽
の水位レベルで判定することを特徴とする請求項１また
は請求項２に記載のヤード排水のＳＳ除去処理方法。4. The timing of switching between the low-water-volume, low-concentration SS wastewater treatment process and the high-water-volume, high-concentration SS wastewater treatment process,
3. The SS removal treatment method for yard wastewater according to claim 1, wherein the determination is made based on a water level of a raw water tank or an adjustment tank at a preceding stage of the wastewater treatment process.
度ＳＳ排水処理プロセスと凝集沈殿による多水量高濃度
ＳＳ排水処理プロセスを併用する、ＳＳを含むヤード排
水の処理方法であって、多水量ＳＳ排水処理プロセスの
前段に晴天時の少水量低濃度ＳＳ排水プロセスを直列配
置し、少水量で低濃度のＳＳを含む排水と、多水量で高
濃度のＳＳを含む排水を、まず少水量低濃度ＳＳ排水処
理プロセスで処理し、ついで多水量高濃度ＳＳ排水処理
プロセスで処理することを特徴とするヤード排水のＳＳ
除去処理方法。5. A method for treating yard wastewater containing SS, wherein both a low-water-volume, low-concentration SS wastewater treatment process by filtration or coagulation filtration and a multi-water, high-concentration SS wastewater treatment process by coagulation sedimentation are used. The low-concentration, low-concentration SS drainage process in fine weather is arranged in series at the previous stage of the treatment process. A yard wastewater SS characterized by being treated in a wastewater treatment process and then treated in a multi-volume, high-concentration SS wastewater treatment process
Removal processing method.
度ＳＳ排水処理プロセスと凝集沈殿による多水量高濃度
ＳＳ排水処理プロセスを併用する、ＳＳを含むヤード排
水の処理方法であって、晴天時の少水量低濃度ＳＳ排水
プロセスの前段に多水量高濃度ＳＳ排水処理プロセスを
直列配置し、少水量で低濃度のＳＳを含む排水と、多水
量で高濃度のＳＳを含む排水を、まず多水量高濃度ＳＳ
排水処理プロセスでで処理し、ついで少水量低濃度ＳＳ
排水処理プロセスで処理することを特徴とするヤード排
水のＳＳ除去処理方法。6. A method for treating yard wastewater containing SS, comprising using both a low-water-volume, low-concentration SS wastewater treatment process by filtration or coagulation filtration and a high-water-content, high-concentration SS wastewater treatment process by coagulation sedimentation. A large-volume, high-concentration SS wastewater treatment process is arranged in series before the low-volume, low-concentration SS wastewater process. Concentration SS
Treated by wastewater treatment process, then low water volume low concentration SS
A method for removing SS from yard wastewater, which is performed by a wastewater treatment process.
過機の逆洗水を、多水量高濃度ＳＳ排水処理プロセスに
導入して処理することを特徴とする請求項１〜請求項６
のいずれかに記載のヤード排水のＳＳ除去処理方法。7. The high-concentration, high-concentration SS wastewater treatment process wherein the backwash water of the filter in the low-water-volume, low-concentration SS wastewater treatment process is introduced and treated.
The method for removing SS from yard wastewater according to any one of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000369477A JP2002172394A (en) | 2000-12-05 | 2000-12-05 | Method for ss removing treatment of yard wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000369477A JP2002172394A (en) | 2000-12-05 | 2000-12-05 | Method for ss removing treatment of yard wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002172394A true JP2002172394A (en) | 2002-06-18 |
Family
ID=18839508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000369477A Withdrawn JP2002172394A (en) | 2000-12-05 | 2000-12-05 | Method for ss removing treatment of yard wastewater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002172394A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253750A (en) * | 2013-05-23 | 2013-08-21 | 云南三明鑫疆矿业有限公司 | Recycling treatment technique of direct flotation concentrate and tailing wastewater of collophane |
| JP2013220411A (en) * | 2012-04-19 | 2013-10-28 | Jfe Steel Corp | Yard waste water treatment method |
| JP2013220412A (en) * | 2012-04-19 | 2013-10-28 | Jfe Steel Corp | Yard waste water treatment method |
| CN103663617A (en) * | 2013-12-11 | 2014-03-26 | 山东华亚环保科技有限公司 | Treatment method of wastewater containing grease |
| CN103693722A (en) * | 2013-12-26 | 2014-04-02 | 山东华升化工科技有限公司 | Method for treating chrome-tanning wastewater by using flocculating agent |
| CN104192918A (en) * | 2014-08-19 | 2014-12-10 | 中国石油天然气股份有限公司 | Sewage treatment agent and preparation method and application thereof |
| CN104236279A (en) * | 2014-08-13 | 2014-12-24 | 湖南有色新田岭钨业有限公司 | Dehydrating and drying method for scheelite concentrate and device thereof |
| CN104261531A (en) * | 2014-09-26 | 2015-01-07 | 湖南有色新田岭钨业有限公司 | Process for ore dressing of scheelite by using scheelite tailing wastewater |
| CN104291398A (en) * | 2014-09-17 | 2015-01-21 | 广东顺德天新环保科技有限公司 | Treatment method for recycling dyeing residual liquid |
| CN105481075A (en) * | 2016-02-02 | 2016-04-13 | 临江市大塬硅藻土新材料生态环保科技有限公司 | Diatomite papermaking wastewater treatment agent and preparation method |
| CN106145290A (en) * | 2016-08-18 | 2016-11-23 | 桂林市春晓环保科技有限公司 | A kind of infant industry waste water flocculant and preparation method thereof |
| JP2019155283A (en) * | 2018-03-13 | 2019-09-19 | 住友重機械エンバイロメント株式会社 | Chemical addition amount control device and chemical addition amount control method |
-
2000
- 2000-12-05 JP JP2000369477A patent/JP2002172394A/en not_active Withdrawn
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013220411A (en) * | 2012-04-19 | 2013-10-28 | Jfe Steel Corp | Yard waste water treatment method |
| JP2013220412A (en) * | 2012-04-19 | 2013-10-28 | Jfe Steel Corp | Yard waste water treatment method |
| CN103253750A (en) * | 2013-05-23 | 2013-08-21 | 云南三明鑫疆矿业有限公司 | Recycling treatment technique of direct flotation concentrate and tailing wastewater of collophane |
| CN103663617B (en) * | 2013-12-11 | 2016-01-27 | 广东瀚蓝环保工程技术有限公司 | A kind of method of wastewater treatment containing grease |
| CN103663617A (en) * | 2013-12-11 | 2014-03-26 | 山东华亚环保科技有限公司 | Treatment method of wastewater containing grease |
| CN103693722B (en) * | 2013-12-26 | 2016-08-17 | 山东华升化工科技有限公司 | A kind of flocculant processes the method for Chrome Tanning Wastewater |
| CN103693722A (en) * | 2013-12-26 | 2014-04-02 | 山东华升化工科技有限公司 | Method for treating chrome-tanning wastewater by using flocculating agent |
| CN104236279A (en) * | 2014-08-13 | 2014-12-24 | 湖南有色新田岭钨业有限公司 | Dehydrating and drying method for scheelite concentrate and device thereof |
| CN104192918B (en) * | 2014-08-19 | 2015-12-02 | 中国石油天然气股份有限公司 | Sewage treatment agent and preparation method and application thereof |
| CN104192918A (en) * | 2014-08-19 | 2014-12-10 | 中国石油天然气股份有限公司 | Sewage treatment agent and preparation method and application thereof |
| CN104291398A (en) * | 2014-09-17 | 2015-01-21 | 广东顺德天新环保科技有限公司 | Treatment method for recycling dyeing residual liquid |
| CN104261531A (en) * | 2014-09-26 | 2015-01-07 | 湖南有色新田岭钨业有限公司 | Process for ore dressing of scheelite by using scheelite tailing wastewater |
| CN105481075A (en) * | 2016-02-02 | 2016-04-13 | 临江市大塬硅藻土新材料生态环保科技有限公司 | Diatomite papermaking wastewater treatment agent and preparation method |
| CN106145290A (en) * | 2016-08-18 | 2016-11-23 | 桂林市春晓环保科技有限公司 | A kind of infant industry waste water flocculant and preparation method thereof |
| JP2019155283A (en) * | 2018-03-13 | 2019-09-19 | 住友重機械エンバイロメント株式会社 | Chemical addition amount control device and chemical addition amount control method |
| JP7074406B2 (en) | 2018-03-13 | 2022-05-24 | 住友重機械エンバイロメント株式会社 | Drug addition amount control device and drug addition amount control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100960015B1 (en) | Waste water treatment apparatus for processing early rain effectively and the method thereof | |
| JP2002172394A (en) | Method for ss removing treatment of yard wastewater | |
| CN106630307A (en) | System and method for treating coal gasification grey water | |
| US4128477A (en) | Method for the treatment of sea discharged sewage | |
| WO2018032830A1 (en) | Regeneration system for residual water from treatment of contaminated bottom sludge from river or lake | |
| US20070193930A1 (en) | Aqueous liquid clarification system | |
| CN106457093B (en) | For the effluent processing of overflow | |
| KR100917267B1 (en) | Graywater recycling apparatus using rainfall | |
| JP3698678B2 (en) | Fine sand slow filtration equipment | |
| JPH0999203A (en) | Treatment of rain water and/or waste water | |
| JP3890461B2 (en) | SS removal treatment method for yard drainage | |
| JPH03118896A (en) | Method for removing the solid phase from a liquid substance, particularly waste water purification method | |
| KR100635485B1 (en) | Apparatus and method for all-weather treatment of sewage and wastewater by efficient combination of treatment functions | |
| JPS58166914A (en) | Treatment of waste water | |
| JP2009056346A (en) | Polluted muddy water treatment system | |
| KR100427774B1 (en) | Purification method and that equipment of abandoned mine drainage | |
| KR100628881B1 (en) | Compact waste water treatment apparatus | |
| KR200377629Y1 (en) | Compact waste water treatment apparatus | |
| KR20050092154A (en) | Wastewater treatment system | |
| JP3939970B2 (en) | Coal storage wastewater treatment method | |
| KR0120911B1 (en) | Dual water treatment method | |
| Zotter et al. | Removal of chromium (VI) and other heavy metals from groundwaters in neutral and alkaline media | |
| JP2854543B2 (en) | Dredging wastewater treatment method and device | |
| JP2007136296A (en) | Method, apparatus and seaweed paste for treating mud water | |
| JP2005007250A (en) | Sludge treatment apparatus and sludge treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20080205 |