JP2012196628A5 - - Google Patents
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- JP2012196628A5 JP2012196628A5 JP2011062881A JP2011062881A JP2012196628A5 JP 2012196628 A5 JP2012196628 A5 JP 2012196628A5 JP 2011062881 A JP2011062881 A JP 2011062881A JP 2011062881 A JP2011062881 A JP 2011062881A JP 2012196628 A5 JP2012196628 A5 JP 2012196628A5
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本発明は、以下のとおりである。
１）原水に所定の凝集剤注入率で凝集剤を注入して凝集処理水を生成し、該凝集処理水を膜ろ過して浄水を得る浄水処理方法であって、
前記凝集処理水の紫外線吸光度（ＡＳ）が、該凝集処理水の予め設定された紫外線吸光度目標値（ＡＭ）以下となるように、原水の紫外線吸光度（ＡＧ）及び濁度の情報から前記凝集剤注入率を制御し、原水性状が変動しても安定して清澄な浄水を得ることを特徴とする浄水処理方法。
２）前記凝集処理水の紫外線吸光度（Ａ Ｓ ）と前記予め設定された紫外線吸光度目標値（Ａ Ｍ ）から紫外線吸光度除去量を求め、該紫外線吸光度除去量から粉末活性炭注入率を制御し、
前記制御された粉末活性炭注入率で粉末活性炭を、前記凝集処理水又は前記原水へ注入することを特徴とする上記１）の浄水処理方法。
３）前記原水の紫外線吸光度（Ａ Ｇ ）及び前記濁度を測定し、前記予め設定されている紫外線吸光度目標値（Ａ Ｍ ）から、紫外線吸光度除去率ΔＡ[ΔＡ＝１００×（Ａ Ｇ −Ａ Ｍ ）／Ａ Ｇ ]を求め、該紫外線吸光度除去率ΔＡと凝集剤注入率の関係式、及び前記濁度と凝集剤注入率の補正値の関係式に基づいて、前記凝集剤注入率を決定することを特徴とする上記１）又は２）の浄水処理方法。
４）前記凝集処理水の紫外線吸光度（Ａ Ｓ ）と前記予め設定された紫外線吸光度目標値（Ａ Ｍ ）が、Ａ Ｓ ＞Ａ Ｍ の場合、前記凝集処理水又は前記原水への粉末活性炭の注入を行うことを特徴とする上記１〜３のいずれか１項の浄水処理方法。
５）予め設定されている紫外線吸光度除去量（Ａ Ｓ −Ａ Ｍ ）と粉末活性炭注入率との関係式から、粉末活性炭注入率を決定することを特徴とする上記４）の浄水処理方法。
６）前記紫外線吸光度目標値（Ａ Ｍ ）は、０．２５未満であることを特徴とする上記１）〜５）のいずれか１項の浄水処理方法。
７）前記紫外線吸光度（Ａ Ｓ ）は、波長２６０ｎｍにて測定されることを特徴とする上記１）〜６）のいずれか１項の浄水処理方法。
８）原水に所定の凝集剤注入率により凝集剤を注入する凝集剤注入装置と、前記凝集剤の注入により凝集処理水を生成する凝集処理装置と、前記凝集処理水を膜ろ過して浄水を得る膜ろ過装置と、を含む、浄水処理装置であって、
前記原水の紫外線吸光度（Ａ Ｇ ）と該凝集処理水の予め設定された紫外線吸光度目標値（Ａ Ｍ ）とが一致（Ａ Ｓ ＝Ａ Ｍ ）するように、原水の紫外線吸光度（Ａ Ｇ ）及び濁度の情報から前記凝集剤注入率を制御する制御部を有し、
原水性状が変動しても安定して清澄な浄水を得ることを特徴とする浄水処理装置。
９）原水に所定の凝集剤注入率により凝集剤を注入する凝集剤注入装置と、前記凝集剤の注入により凝集処理水を生成する凝集処理装置と、前記凝集処理水を膜ろ過して浄水を得る膜ろ過装置と、を含む、浄水処理装置であって、
前記原水の紫外線吸光度（ＡＧ）、及び前記凝集処理水の紫外線吸光度（ＡＳ）を測定するとともに前記紫外線吸光度目標値（Ａ Ｍ ）を設定するために用いる紫外線吸光度測定装置と、
前記原水の濁度を測定する濁度測定装置と、
前記紫外線吸光度（ＡＧ ）、前記凝集処理水の紫外線吸光度（ＡＳ ）、前記紫外線吸光度目標値（Ａ Ｍ ）、前記濁度の測定情報に基づいて、前記凝集剤注入装置の凝集剤注入率を制御する制御部を有し、
原水性状が変動しても安定して清澄な浄水を得ることを特徴とする浄水処理装置。
１０）前記制御部は、前記凝集処理水の紫外線吸光度（Ａ Ｓ ）と前記予め設定された紫外線吸光度目標値（Ａ Ｍ ）が、
Ａ Ｓ ＞Ａ Ｍ の場合、凝集剤注入率を低減させるように制御し、
Ａ Ｓ ＜Ａ Ｍ の場合、凝集剤注入率を増加させるように制御することを特徴とする上記９）の浄水処理装置。
１１）前記制御部は、前記凝集処理水の紫外線吸光度（Ａ Ｓ ）と前記予め設定された紫外線吸光度目標値（Ａ Ｍ ）が、Ａ Ｓ ＞Ａ Ｍ の場合、紫外線吸光度除去量（Ａ Ｓ −Ａ Ｍ ）と粉末活性炭注入率との関係式から粉末活性炭注入率を決定し、前記凝集処理水又は前記原水へ粉末活性炭を注入するように設けられた粉末活性炭注入装置の制御を行うことを特徴とする上記８）〜１０）のいずれか１項の浄水処理装置。
The present invention is as follows.
1) raw water by injecting coagulant at a predetermined coagulant injection rate generates agglutination treated water, a water purification treatment method Ru obtain a purified water by membrane filtration the coagulation process water,
From the ultraviolet absorbance (A G ) and turbidity information of the raw water so that the ultraviolet absorbance (A S ) of the agglomerated treated water is not more than the preset ultraviolet absorbance target value (A M ) of the agglomerated treated water. water treatment method characterized by the controlling the coagulant injection rate, even if the raw water properties varies stably obtain a fining water purification.
2) Obtain the ultraviolet absorbance removal amount from the ultraviolet absorbance (A S ) of the flocculated water and the preset ultraviolet absorbance target value (A M ), and control the powder activated carbon injection rate from the ultraviolet absorbance removal amount,
The water purification method of 1) above, wherein powdered activated carbon is injected into the agglomerated treated water or the raw water at the controlled powdered activated carbon injection rate.
3) The ultraviolet absorbance (A G ) and the turbidity of the raw water are measured , and the ultraviolet absorbance removal rate ΔA [ΔA = 100 × (A G −A ) is determined from the preset ultraviolet absorbance target value (A M ). M ) / A G ], and the flocculant injection rate is determined based on the relational expression between the UV absorbance removal rate ΔA and the flocculant injection rate, and the relational expression between the turbidity and the correction value of the flocculant injection rate. The water purification method according to 1) or 2) above, wherein:
4) Injection of powdered activated carbon into the agglomerated treated water or the raw water when the ultraviolet absorbance (A S ) of the agglomerated treated water and the preset ultraviolet absorbance target value (A M ) are A S > A M The water purification method according to any one of the above items 1 to 3, wherein:
5) The water purification treatment method according to 4) above, wherein the powdered activated carbon injection rate is determined from a relational expression between a preset UV absorbance removal amount (A S -A M ) and the powdered activated carbon injection rate.
6) The water purification method according to any one of 1) to 5) above, wherein the ultraviolet absorbance target value (A M ) is less than 0.25.
7) The water purification method according to any one of 1) to 6) above, wherein the ultraviolet absorbance (A S ) is measured at a wavelength of 260 nm.
8) A flocculant injection device for injecting a flocculant into raw water at a predetermined flocculant injection rate, an agglomeration treatment device for generating agglomeration treated water by injecting the flocculant, and filtering the purified water by membrane filtration A water purification device comprising a membrane filtration device to obtain,
The so pre-set UV absorbance target value of the raw water of the ultraviolet absorbance (A G) and aggregated treated water and (A M) matches (A S = A M), UV absorbance of the raw water (A G) and Having a control unit for controlling the flocculant injection rate from turbidity information,
A water purification apparatus characterized by stably obtaining clear purified water even if the raw aqueous state changes.
9) and Atsumarizai implanter coagulation you inject coagulant by a predetermined coagulant injection rate raw water, the aggregation processing apparatus for generating an aggregation process water, pre-Symbol coagulation treatment water to membrane filtration by injection of the coagulant obtaining a water purification Te comprises a membrane filtration device, and a water treatment device,
An ultraviolet absorbance measuring device used to set the UV absorbance of the raw water (A G), and the ultraviolet absorbance target value with measuring UV absorbance (A S) of the aggregation treatment water (A M),
A turbidity measuring device for measuring the turbidity of the raw water;
Based on the ultraviolet absorbance ( A G ) , the ultraviolet absorbance ( A S ) of the flocculated water, the ultraviolet absorbance target value (A M ), and the measurement information of the turbidity, the flocculant injection rate of the flocculant injection device a control unit for controlling the,
A water purification apparatus characterized by stably obtaining clear purified water even if the raw aqueous state changes .
10) The control unit is configured such that the ultraviolet absorbance (A S ) of the agglomerated treated water and the preset ultraviolet absorbance target value (A M ) are
If A S > A M , control to reduce the flocculant injection rate,
In the case of A S <A M , the water purification apparatus according to 9) is controlled so as to increase the flocculant injection rate.
11) When the UV absorbance (A S ) and the preset UV absorbance target value (A M ) of the agglomerated treated water are A S > A M , the control unit removes the UV absorbance (A S − The powder activated carbon injection rate is determined from the relational expression between A M ) and the powder activated carbon injection rate, and the powder activated carbon injection device provided to inject powder activated carbon into the agglomerated treated water or the raw water is controlled. The water purification apparatus according to any one of 8) to 10) above.
以下、本発明を詳細に説明する。
本発明は、ＡＳが、ＡＭ以下となるように、原水のＡＧ及び濁度の情報から凝集剤注入率を制御することができる。
ＡＭ、ＡＳ、及びＡＧの紫外線吸光度は、各々異なる波長を採用してもよい。また、ＡＳ、及びＡＧ並びに濁度の測定は、通常、常時連続測定であるが、気象条件等が一定の場合等、場合により断続測定でもよく、特に、濁度の測定は、断続測定でよい場合がある。
本発明において、濁度は、透過光散乱方式、レーザー散乱光方式等により測定した値が採用される。
本発明は、基本的にはＡＭがＡＳ以下である場合は、凝集剤注入率を増加することは回避されるとともに現状を維持するか、又は凝集剤注入率が低減されるように制御される。可能な限り、ＡＭ＝ＡＳとなるように制御することが、凝集剤の有効使用量を最大限に発揮させるため、好ましい。
本発明は、基本的には上記ＡＭが上記ＡＳを上回る場合は、濁度が増加している傾向が高く、上記ＡＭが上記ＡＳ以下となるように濁度の測定値等を勘案して凝集剤注入率を増加し、制御される。この場合、本発明の浄水処理方法において、粉末活性炭の注入を併用してもよい。粉末活性炭の注入は、凝集処理水への注入が好ましい。
例えば、本発明において、前記凝集剤注入率を増加させるための制御方法としては、図１、図２に示す様に、予め設定されている紫外線吸光度除去率ΔＡ[ΔＡ＝１００×（ＡＧ−ＡＭ）／ＡＧ]と凝集剤注入率の関係式（１）（図１）、及び予め設定されている濁度と凝集剤注入率の補正値の関係式（２）（図２）から、凝集剤注入率を決定することが挙げられる。
具体的には、関係式（１）の凝集剤注入率に関係式（２）の凝集剤注入率を合算することが挙げられる。これら関係式は、予備試験、経験則等から事前に設定されるものであり、運転管理員の判断で任意に変更可能なものである。
また、上記の凝集剤注入率にて、本発明の浄水処理方法を実施した結果、ＡＳ＞ＡＭの場合のみ、凝集処理水への粉末活性炭の注入を行うことが粉末活性炭の有効利用上好ましい。この場合、粉末活性炭注入率は、図３に示す様に、予め設定されている紫外線吸光度除去量（ＡＳ−ＡＭ）と粉末活性炭注入率との関係式（３）から決定することが好ましい。この関係式は、予備試験、経験則等から事前に設定されるものであり、運転管理員の判断で任意に変更可能なものである。
尚、関係式（１）、（２）、（３）は、夫々、図１、図２、図３に示す特性図を示す。
Hereinafter, the present invention will be described in detail.
The present invention is, A S is to be equal to or less than A M, it is possible to control the coagulant injection rate from A G and turbidity information of the raw water.
Different wavelengths may be adopted for the ultraviolet absorbance of A M , A S , and AG . The measurement of A S, and A G and turbidity is usually a constant continuous measurement, or when the weather conditions are constant, optionally may be intermittent measurements, in particular, the measurement of turbidity, intermittent measurement May be good.
In the present invention, the turbidity employs a value measured by a transmitted light scattering method, a laser scattered light method, or the like.
The present invention, when basically A M is less than or equal to A S, controlled to either maintain the status quo with it is avoided to increase the coagulant injection rate, or coagulant injection rate is reduced Is done. As much as possible, it is preferable to control so that A M = A S in order to maximize the effective use amount of the flocculant.
The present invention, when basically that the A M exceeds the A S, high tendency to turbidity is increasing, the A M is the measured value or the like of the turbidity to be equal to or less than the A S In consideration, the coagulant injection rate is increased and controlled. In this case, injection of powdered activated carbon may be used in combination in the water purification treatment method of the present invention. The powdered activated carbon is preferably injected into the agglomerated water.
For example, in the present invention, as a control method for increasing the flocculant injection rate, as shown in FIG. 1 and FIG. 2, a preset UV absorbance removal rate ΔA [ΔA = 100 × (A G − From A M ) / A G ] and the coagulant injection rate (1) (FIG. 1) , and the relationship between the preset turbidity and the coagulant injection rate correction value (2) (FIG. 2) And determining the injection rate of the flocculant.
Specifically, adding the coagulant injection rate of the relational expression (2) to the coagulant injection rate of the relational expression (1) can be mentioned. These relational expressions are set in advance from preliminary tests, rules of thumb, etc., and can be arbitrarily changed at the discretion of the operation manager.
Further, in the above coagulant injection rate, water treatment method result of the of the present invention, A S> For A M only, effective utilization of doing the injection of powdered activated carbon into the coagulation treatment water powdered activated carbon preferable. In this case, as shown in FIG. 3, the powder activated carbon injection rate is preferably determined from the relational expression (3) between the preset UV absorbance removal amount (A S -A M ) and the powder activated carbon injection rate. . This relational expression is set in advance from preliminary tests, empirical rules, and the like, and can be arbitrarily changed at the discretion of the operation manager.
Relational expressions (1), (2), and (3) show the characteristic diagrams shown in FIGS. 1, 2, and 3, respectively.
本発明において、ＡＭ、ＡＳ、及びＡＧの紫外線吸光度の波長は、原水の性状及びその変動状態に応じて予備試験、経験則等から事前に設定されるが、上述のように各々同一波長を指標にしても異なる波長を指標にしてもよい。例えば、測定波長３９０ｎｍ、２６０ｎｍ等が挙げられる。降雨等による原水の２６０ｎｍ測定値の上昇幅は、３９０ｎｍ測定値に比べて大きく、濁度の上昇幅と相関することを本発明者は見出している。
本発明は、図１に示す上記紫外線吸光度除去率ΔＡ[ΔＡ＝１００×（ＡＧ−ＡＭ）／ＡＧ]の情報からの凝集剤注入率に、図２に示す関係式（２）の濁度情報による凝集剤注入率の補正値を加えることにより、凝集剤注入率を制御することができる。
ＡＭの値は、適宜設定されるが、通常、０．２５未満であり、０．１未満であることが好ましい。
In the present invention, the wavelengths of UV absorbance of A M , A S , and AG are set in advance from preliminary tests, empirical rules, etc. according to the properties of raw water and its fluctuation state, but they are the same as described above. Different wavelengths may be used as indices, and different wavelengths may be used as indices. For example, measurement wavelength 390nm, 260nm etc. are mentioned. The inventor has found that the increase in the 260 nm measurement value of the raw water due to rainfall or the like is larger than the 390 nm measurement value and correlates with the increase in turbidity.
The present invention relates to coagulant injection rate from the information of the UV absorbance removal rate ΔA [ΔA = 100 × (A G -A M) / A G] shown in FIG. 1, a relational expression shown in FIG. 2 (2) By adding a correction value of the flocculant injection rate based on the turbidity information, the flocculant injection rate can be controlled.
The value of A M is appropriately set, usually less than 0.25, preferably less than 0.1.
本発明の実施の形態に係る、浄水処理装置の一例を図４を用いて説明する。
本発明の浄水処理装置１００は、上記本発明の方法を実施できるものであれば、制限されない。本発明の装置としては、具体的には、原水に凝集剤を注入するための凝集剤注入装置１０、凝集剤注入装置１０からの凝集剤によりフロックを含む凝集処理水を生成する凝集処理装置２０、及び前記凝集処理水を膜ろ過して浄水を得る膜ろ過装置３０を含み、ＡＧ、ＡＳ を測定するとともにＡ Ｍ を設定するために用いる紫外線吸光度測定装置４０（２つは同一でも別個でもよい）、及び濁度測定装置５０並びにそれらの情報を処理して、前記凝集剤注入装置の凝集剤注入率を制御する制御部６０を含むものが挙げられる。
凝集剤注入装置１０は、制御部６０と情報の交換が可能なように連絡され、制御部６０の凝集剤注入率の情報を受けて凝集剤を凝集処理装置２０に注入する制御装置、駆動装置、凝集剤受容・注入装置等を具備する。
また、凝集処理装置２０は、単なる槽（攪拌混和により凝集フロックを形成する槽と凝集フロックを分離する槽に分け、清澄水をオーバーフローで得る等）でも、凝集フロックを分離する装置（例えば、遠心装置、スクリーン装置等）を具備していてもよい。
An example of the water purification apparatus according to the embodiment of the present invention will be described with reference to FIG.
The water purification apparatus 100 of the present invention is not limited as long as the method of the present invention can be performed. Specifically, as the apparatus of the present invention, a flocculant injecting
The
In addition, the
本発明は、凝集剤の原水への注入は、原水、そのままのものでも、所望の前処理を施したものであってもよい。前処理としては、マンガン、鉄、等を除く処理が挙げられる。ＡＧ、ＡＳ、及び濁度は、通常、前処理前の原水そのものを用いるが、前処理後であって、凝集処理前のものを用いてもよいし、両者を用いてもよい。
また、本発明は、粉末活性炭を原水へ注入することができるが、注入される原水は、そのままのものでも、所望の前処理を施した水であってもよい。前処理としては、マンガン、鉄、等を除く処理、凝集処理等が挙げられる。粉末活性炭の注入位置は、好ましくは、上述のように、凝集処理された水であり、好ましくはフロックが除去された水である。
本発明において、Ａ Ｓ が測定される凝集処理水は、フロックが除去されていた方が好ましい。
粉末活性炭注入装置７０は、制御部６０と、更に所望により凝集剤注入装置１０と上記情報の交換が可能なように連絡される。粉末活性炭注入装置７０としては、上記凝集剤注入装置１０と同様な構成が採用できる。
粉末活性炭は、フロックが除去された凝集処理水に注入されることが好ましいが、膜ろ過装置３０に直接、注入しても凝集処理装置２０と膜ろ過装置３０を連絡する経路に注入してもよい。本発明は、粉末活性炭を膜ろ過装置３０に注入した場合、その滞留時間を長期化することできるという効果もある。
In the present invention, the flocculant may be injected into the raw water as it is, or it may be subjected to a desired pretreatment. Examples of the pretreatment include a treatment excluding manganese, iron and the like. As for A G , A S , and turbidity, the raw water itself before the pretreatment is usually used, but after the pretreatment and before the aggregation treatment may be used, or both may be used.
Moreover, although this invention can inject | pour powdered activated carbon into raw | natural water, the raw | natural water injected may be as it is or the water which performed the desired pretreatment. Examples of the pretreatment include a treatment excluding manganese, iron, etc., and an agglomeration treatment. The injection position of the powdered activated carbon is preferably water that has been agglomerated as described above, and preferably water from which floc has been removed.
In the present invention, the aggregation treatment water A S is measured, it is preferable that flocks had been removed.
The powdered activated
Powdered activated carbon is preferably injected into the aggregation treatment water flocs have been removed, directly to the
凝集剤の注入率の決定は、上向流除マンガン装置への原水供給配管上に紫外線吸光度計を設置し、原水の紫外線吸光度（ＡＧ）を連続測定し、制御部において、この値と運転管理者が設定する凝集処理後の紫外線吸光度目標値（ＡＭ）を比較することで、紫外線吸光度除去率ΔＡ[ΔＡ＝１００×（ＡＧ−ＡＭ）／ＡＧ]を算出する。図１に示す紫外線吸光度除去率と凝集剤注入率の関係式（１）を予め設定しておき、前記の凝集処理によって得られる紫外線吸光度除去率から、凝集剤注入率を導き出す。
ただし、降雨等によって原水濁度が上昇した場合には、図２に示す原水濁度と濁度による凝集剤注入率補正の関係式（２）に基づき、原水濁度に応じて前記の導出された凝集剤注入率に対して注入率の補正・加算がなされる。
すなわち、図１に示す紫外線吸光度除去率と凝集剤注入率の関係式において、低濁度時には通常時の一例として図示される関係式にて凝集剤が注入されるのに対し、高濁度時の一例として図示される関係式に基づき凝集剤が注入されるようになる。
なお、図１の高濁度時の一例として図示される関係式（１）は、図２の関係式（２）で補正されたものである。
The injection rate of the flocculant is determined by installing an ultraviolet absorbance meter on the raw water supply pipe to the upward flow manganese removal equipment, and continuously measuring the ultraviolet absorbance (A G ) of the raw water, and this value and operation are performed in the control unit. By comparing the ultraviolet absorbance target value (A M ) after the aggregation treatment set by the administrator, the ultraviolet absorbance removal rate ΔA [ΔA = 100 × (A G −A M ) / A G ] is calculated. A relational expression (1) between the ultraviolet light absorption removal rate and the flocculant injection rate shown in FIG. 1 is set in advance, and the flocculant injection rate is derived from the ultraviolet light absorption removal rate obtained by the agglomeration process.
However, when the raw water turbidity rises due to rainfall or the like, the above-mentioned derivation is made according to the raw water turbidity based on the relational expression (2) for correcting the flocculant injection rate by the raw water turbidity and turbidity shown in FIG. The injection rate is corrected and added to the flocculant injection rate.
That is, in the relational expression between the ultraviolet light absorption removal rate and the flocculant injection rate shown in FIG. 1, the flocculant is injected according to the relational expression shown as an example of the normal time at low turbidity, whereas at high turbidity. As an example, the flocculant is injected based on the relational expression shown in the figure.
The relational expression (1) illustrated as an example at the time of high turbidity in FIG. 1 is corrected by the relational expression (2) in FIG.
しかし、上記手順に則り導出された凝集剤注入率において、得られる凝集処理水の紫外線吸光度（ＡＳ）が、運転管理者が設定する凝集処理後の紫外線吸光度目標値（ＡＭ）に到達しない場合のみ、即ち、ＡＳ＞ＡＭの場合のみ粉末活性炭の注入を行う。この粉末活性炭注入率は、図３に示すような予め設定されている紫外線吸光度除去量（ＡＳ−ＡＭ）と粉末活性炭注入率との関係式（３）から決定される。
なお、紫外線吸光度（ＡＧ）、（ＡＳ）、及び（ＡＭ）は、波長２６０ｎｍを採用した。また、濁度は、透過光散乱方式により測定した。
However, at the flocculant injection rate derived according to the above procedure, the ultraviolet absorbance (A S ) of the obtained agglomerated water does not reach the target UV absorbance value (A M ) after the aggregation treatment set by the operation manager. Only in the case, i.e., when A S > A M , powdered activated carbon is injected. The powdered activated carbon injection rate is determined from the UV absorbance removal amount that is set in advance as shown in FIG. 3 relational expression between (A S -A M) and powdered activated carbon injection rate (3).
In addition, the wavelength 260nm was employ | adopted for ultraviolet-ray light absorbency (A G ), (A S ), and (A M ). The turbidity was measured by a transmitted light scattering method.
Claims (11)
前記凝集処理水の紫外線吸光度（ＡＳ）が、該凝集処理水の予め設定された紫外線吸光度目標値（ＡＭ）以下となるように、原水の紫外線吸光度（ＡＧ）及び濁度の情報から前記凝集剤注入率を制御し、原水性状が変動しても安定して清澄な浄水を得ることを特徴とする浄水処理方法。 By injecting a coagulant at a predetermined coagulant injection rate raw water to generate the agglutination treated water, a water purification treatment method Ru obtain a purified water by membrane filtration the coagulation process water,
From the ultraviolet absorbance (A G ) and turbidity information of the raw water so that the ultraviolet absorbance (A S ) of the agglomerated treated water is not more than the preset ultraviolet absorbance target value (A M ) of the agglomerated treated water. water treatment method characterized by the controlling the coagulant injection rate, even if the raw water properties varies stably obtain a fining water purification.
前記制御された粉末活性炭注入率で粉末活性炭を、前記凝集処理水又は前記原水へ注入することを特徴とする請求項１の浄水処理方法。 Obtaining the UV absorbance removal amount from the UV absorbance (A S ) of the agglomerated treated water and the preset UV absorbance target value (A M ), controlling the powder activated carbon injection rate from the UV absorbance removal amount,
2. The water purification method according to claim 1 , wherein powdered activated carbon is injected into the agglomerated treated water or the raw water at the controlled powdered activated carbon injection rate .
前記原水の紫外線吸光度（Ａ Ｇ ）と該凝集処理水の予め設定された紫外線吸光度目標値（Ａ Ｍ ）とが一致（Ａ Ｓ ＝Ａ Ｍ ）するように、原水の紫外線吸光度（Ａ Ｇ ）及び濁度の情報から前記凝集剤注入率を制御する制御部を有し、
原水性状が変動しても安定して清澄な浄水を得ることを特徴とする浄水処理装置。 And Atsumarizai implanter coagulation you inject coagulant by a predetermined coagulant injection rate raw water, the aggregation processing apparatus for generating a coagulation treatment water by the injection of the coagulant, water purification and pre Symbol coagulation treatment water membrane filtration the obtained comprising a membrane filtration unit, and a water treatment device,
The so pre-set UV absorbance target value of the raw water of the ultraviolet absorbance (A G) and aggregated treated water and (A M) matches (A S = A M), UV absorbance of the raw water (A G) and Having a control unit for controlling the flocculant injection rate from turbidity information,
A water purification apparatus characterized by stably obtaining clear purified water even if the raw aqueous state changes.
前記原水の紫外線吸光度（ＡＧ）、及び前記凝集処理水の紫外線吸光度（ＡＳ）を測定するとともに前記紫外線吸光度目標値（Ａ Ｍ ）を設定するために用いる紫外線吸光度測定装置と、
前記原水の濁度を測定する濁度測定装置と、
前記紫外線吸光度（ＡＧ ）、前記凝集処理水の紫外線吸光度（ＡＳ ）、前記紫外線吸光度目標値（Ａ Ｍ ）、前記濁度の測定情報に基づいて、前記凝集剤注入装置の凝集剤注入率を制御する制御部を有し、
原水性状が変動しても安定して清澄な浄水を得ることを特徴とする浄水処理装置。 And Atsumarizai implanter coagulation you inject coagulant by a predetermined coagulant injection rate raw water, the aggregation processing apparatus for generating a coagulation treatment water by the injection of the coagulant, water purification and pre Symbol coagulation treatment water membrane filtration the obtained comprising a membrane filtration unit, and a water treatment device,
An ultraviolet absorbance measuring device used to measure the ultraviolet absorbance (A G ) of the raw water and the ultraviolet absorbance (A S ) of the agglomerated water and to set the ultraviolet absorbance target value (A M ) ;
A turbidity measuring device for measuring the turbidity of the raw water;
Based on the ultraviolet absorbance ( A G ) , the ultraviolet absorbance ( A S ) of the flocculated water, the ultraviolet absorbance target value (A M ), and the measurement information of the turbidity, the flocculant injection rate of the flocculant injection device a control unit for controlling the,
A water purification apparatus characterized by stably obtaining clear purified water even if the raw aqueous state changes .
Ａ Ｓ ＞Ａ Ｍ の場合、凝集剤注入率を低減させるように制御し、
Ａ Ｓ ＜Ａ Ｍ の場合、凝集剤注入率を増加させるように制御することを特徴とする請求項９の浄水処理装置。 The control unit is configured such that the ultraviolet absorbance (A S ) of the flocculated water and the preset ultraviolet absorbance target value (A M ) are as follows :
If A S > A M , control to reduce the flocculant injection rate,
For A S <A M, water treatment apparatus according to claim 9, wherein the controller controls so as to increase the coagulant injection rate.
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