JPH0268194A - Treatment of dialytic waste water - Google Patents
Treatment of dialytic waste waterInfo
- Publication number
- JPH0268194A JPH0268194A JP63219384A JP21938488A JPH0268194A JP H0268194 A JPH0268194 A JP H0268194A JP 63219384 A JP63219384 A JP 63219384A JP 21938488 A JP21938488 A JP 21938488A JP H0268194 A JPH0268194 A JP H0268194A
- Authority
- JP
- Japan
- Prior art keywords
- dialysis
- waste water
- wastewater
- treatment step
- dialytic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 56
- 238000011282 treatment Methods 0.000 title claims abstract description 32
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 238000005273 aeration Methods 0.000 claims abstract description 13
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 10
- 238000000502 dialysis Methods 0.000 claims description 74
- 239000000645 desinfectant Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 239000005416 organic matter Substances 0.000 claims description 9
- 230000033116 oxidation-reduction process Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 29
- 238000006243 chemical reaction Methods 0.000 abstract description 15
- 230000002378 acidificating effect Effects 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000007935 neutral effect Effects 0.000 abstract description 3
- 230000003472 neutralizing effect Effects 0.000 abstract description 3
- 230000003197 catalytic effect Effects 0.000 abstract 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 9
- 229910052801 chlorine Inorganic materials 0.000 description 9
- 239000000460 chlorine Substances 0.000 description 9
- 230000001590 oxidative effect Effects 0.000 description 6
- 238000004659 sterilization and disinfection Methods 0.000 description 6
- 238000006386 neutralization reaction Methods 0.000 description 4
- 238000011946 reduction process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006864 oxidative decomposition reaction Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- -1 dialysate Substances 0.000 description 1
- 239000000385 dialysis solution Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000003206 sterilizing agent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、透析排水処理方法に関し、特に、透析排水中
の有機物を酸化分解する生物膜の死滅を〔従来の技術〕
一般に、人工透析治療においては、透析液及び透析治療
後の器械、配管内に対する消毒液及び水洗水が透析排水
として排出される。この透析排水は外部に排出される際
に殺菌の必要があり、この際用いられる殺菌剤として次
亜塩素酸系の薬品を多量に使用する。従って該透析排水
はＢＯＤ値が非常に高く、一般の浄化設備で処理するこ
とが困難である。このため、臨床検査室排水と同様に一
般の生活雑排水とは別に透析排水を処理することが必要
とされている。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for treating dialysis wastewater, and in particular, a method for killing a biofilm that oxidizes and decomposes organic matter in dialysis wastewater [Prior art] Generally, artificial dialysis treatment In this system, dialysate, disinfectant solution for equipment and piping after dialysis treatment, and flushing water are discharged as dialysis wastewater. This dialysis wastewater needs to be sterilized before being discharged to the outside, and a large amount of hypochlorous acid-based chemicals are used as the sterilizing agent at this time. Therefore, the dialysis wastewater has a very high BOD value and is difficult to treat with general purification equipment. Therefore, like clinical laboratory wastewater, it is necessary to treat dialysis wastewater separately from general gray water.
透析排水には有機物が多量に含まれているところから、
酸化分解力が強い生物膜を利用した生物処理が行われる
必要がある。ところが、透析排水には、上記のように次
亜塩素酸系殺菌剤等の酸化性物質が多量に含有されてお
り、その成分は透析液の廃棄量、透析処理量、消毒液の
添加量等によって広範囲にわたって変化する。Because dialysis wastewater contains a large amount of organic matter,
Biological treatment using biofilms with strong oxidative decomposition power is required. However, as mentioned above, dialysis wastewater contains large amounts of oxidizing substances such as hypochlorous acid disinfectants, and these components are determined by the amount of dialysis fluid discarded, the amount of dialysis processed, the amount of disinfectant added, etc. varies over a wide range.
このため、を搬物の酸化分解に使用される生物膜が処理
液中の酸化性液すなわち殺菌剤によって死滅し、透析排
水の浄化が不可能になるという問題がある。For this reason, there is a problem that the biofilm used for oxidative decomposition of the transported material is killed by the oxidizing liquid, ie, the disinfectant, in the treatment solution, making it impossible to purify the dialysis wastewater.
上記酸化性は殺菌剤に含まれる塩素に起因するものであ
り、この塩素濃度は例えば残留塩素計によっても検出で
きるが非常に高価となる欠点がある。The above-mentioned oxidizing property is caused by the chlorine contained in the disinfectant, and the chlorine concentration can be detected by, for example, a residual chlorine meter, but it has the drawback of being very expensive.
この発明は、上記の事情を鑑みてなされたものであり、
透析排水に多量に混入する殺菌剤が働かないようにして
生物処理ができ、しかも安価に上記処理ができるように
した透析排水処理方法を装置と提供することを目的とす
るものである。This invention was made in view of the above circumstances,
To provide a device and a method for treating dialysis wastewater, which can perform biological treatment while preventing the action of a large amount of disinfectant mixed in the dialysis wastewater, and which can perform the above treatment at low cost.
透析排水中の有機物を生物膜で酸化分解する透析排水処
理方法において、透析排水をＰＨが中性付近になるよう
に調整し、その後酸化還元電位計の電位が一定値以下に
なるように還元剤を添加して、透析排水を酸化分解する
接触曝気処理をするものである。In a dialysis wastewater treatment method in which organic matter in dialysis wastewater is oxidized and decomposed using a biofilm, the PH of the dialysis wastewater is adjusted to around neutrality, and then a reducing agent is added so that the potential of the oxidation-reduction potentiometer is below a certain value. is added to perform contact aeration treatment to oxidize and decompose the dialysis wastewater.
上記透析排水中の殺菌剤は強い酸化性を示し該酸化性が
生物処理を不能にしている。この殺菌剤の酸化性度は酸
化還元電位計によって的確に把握できる。一方、酸化還
元電位（以下ＯＲＰ値という）とＰＨとの関係は第４図
に示す如くの関係にあり、従ってＰＨがある特定の値で
あるＯＲＰ値を最も小さい値にするとその液の酸化性は
考慮しなくてよいことになる。従って、上記のようにＰ
Ｈを中性付近に調整した後、ＯＲＰ値を調整することに
よって殺菌剤の作用を消すことができる。The disinfectant in the dialysis wastewater has strong oxidizing properties, and this oxidizing property makes biological treatment impossible. The degree of oxidation of this disinfectant can be accurately determined using a redox electrometer. On the other hand, the relationship between the oxidation-reduction potential (hereinafter referred to as ORP value) and PH is as shown in Figure 4. Therefore, if the ORP value, which is a specific value of PH, is set to the lowest value, the oxidizing property of the liquid does not need to be considered. Therefore, as shown above, P
After adjusting H to around neutrality, the action of the fungicide can be eliminated by adjusting the ORP value.
もっとも、還元処理前のＰＨは中性でなくても、ある特
定のＰＨと残留塩素濃度（酸化還元電位）との関係は予
め測定によって求めることができるので、ＰＨさえ判っ
ているとそのＰＨで還元処理した後、ＰＨ処理をしても
よいことは勿論である。However, even if the pH before reduction treatment is not neutral, the relationship between a specific pH and the residual chlorine concentration (oxidation-reduction potential) can be determined in advance by measurement, so if the pH is known, It goes without saying that a PH treatment may be performed after the reduction treatment.
（実施例］
以下、本出願に係る発明の実施例を図面に基づき説明す
る。(Example) Hereinafter, an example of the invention according to the present application will be described based on the drawings.
透析治療は、第３図に示すように、透析装置のプリセラ
）（Ｓｌ）をしてから、約３０分〜５０分にわたり透析
装置の内部を水で洗浄しくＳ２）、約１０程度度の時間
を掛けて透析装置内の洗浄水を透析液に置換した後に（
Ｓ３）患者に透析装置を装着し、約６時間にわたって透
析（Ｓ４）を実行する。そして、透析（Ｓ４）が終了し
た後、約３０程度度にわたって透析装置の内部を水で前
洗浄しくＳ５）、この後３０〜６０分間にわたって薬液
を使用して透析装置の内部を消毒しくＳ６）、更に３０
分程度にわたって後洗浄をする（Ｓ７）。As shown in Figure 3, the dialysis treatment involves pre-ceramizing the dialysis machine (Sl), then washing the inside of the dialysis machine with water for about 30 to 50 minutes (S2), for about 10 degrees. After replacing the wash water in the dialysis machine with dialysate by multiplying (
S3) A dialysis machine is attached to the patient, and dialysis (S4) is performed for about 6 hours. After the dialysis (S4) is completed, the inside of the dialysis machine is pre-washed with water for approximately 30 minutes (S5), and then the inside of the dialysis machine is disinfected using a chemical solution for 30 to 60 minutes (S6). , and 30 more
Post-cleaning is performed for about 30 minutes (S7).
そして、このような操作が７〜８時間で１回繰り返えさ
れ、その間に洗浄水、透析液、患者体内からの尿等の老
廃物、消毒剤等が透析排水として透析排水処理装置に排
出される。This operation is repeated once every 7 to 8 hours, during which time the washing water, dialysate, waste products such as urine from the patient's body, disinfectant, etc. are discharged as dialysis wastewater to the dialysis wastewater treatment equipment. be done.
透析排水処理装置は、例えば第１図に示すように、透析
排水を均質化する均質化処理（Ｓｌｌ）、透析排水を中
和する中和処理（Ｓ１２）、透析排水を還元する還元処
理（Ｓ１３）、透析排水中の有機物を生物膜により酸化
分解させる接触曝気処理（３１４）、透析排水中の固形
物を沈澱させる沈澱処理（Ｓ１５）、透析排水を殺菌す
る殺菌処理（Ｓ１６）及び処理済みの透析排水を放流す
る放流処理（Ｓ １７）が順に実行されるように構成さ
れる。For example, as shown in FIG. 1, the dialysis wastewater treatment device includes a homogenization process (Sll) for homogenizing dialysis wastewater, a neutralization process (S12) for neutralizing dialysis wastewater, and a reduction process (S13) for reducing dialysis wastewater. ), contact aeration treatment (314) to oxidize and decompose organic matter in dialysis wastewater by biofilm, precipitation treatment (S15) to precipitate solids in dialysis wastewater, sterilization treatment (S16) to sterilize dialysis wastewater, and A discharge process (S17) for discharging dialysis wastewater is sequentially executed.
即ち、透析排水処理装置には、例えば第２図に示すよう
に、透析排水を受は入れて一定時間にわたり貯留するこ
とにより透析排水を均質化させる貯留槽（１）と、貯留
槽（１）内の透析排水を反応槽（２）に透析廃液を移注
する移注装置（７）と、反応槽（２）に酸性液を供給す
る酸性液供給装置（３）と、反応槽（２）にはアルカリ
性液を供給するアルカリ性液供給装置（４）と、反応槽
（２）に還元剤を供給する還元剤供給装置（６）と、反
応槽（２）から透析廃液を接触曝気槽（９）に移注する
移注装置（８）と、透析排水中の有機物を酸化分解する
生物膜を内蔵した接触曝気槽（９）と、曝気処理後の透
析排水から固形分を沈澱により除去する沈澱槽（１０）
と、沈澱処理された透析排水に消毒剤を添加して消毒す
る消毒槽（１１）とが設けられる。また、この透析排水
処理装置には、移注装置（７）、酸性液供給装置（３）
、アルカリ性液供給装置（４）、還元剤供給装置（６）
及び移注装置（８）を制御するための制御装置（５）が
設けられる。That is, as shown in FIG. 2, for example, the dialysis wastewater treatment device includes a storage tank (1) that receives dialysis wastewater and stores it for a certain period of time to homogenize the dialysis wastewater; a transfer device (7) that transfers the dialysis wastewater into the reaction tank (2), an acidic liquid supply device (3) that supplies acidic liquid to the reaction tank (2), and a reaction tank (2). is an alkaline liquid supply device (4) that supplies alkaline liquid, a reducing agent supply device (6) that supplies a reducing agent to the reaction tank (2), and a contact aeration tank (9) that supplies the dialysis waste liquid from the reaction tank (2). ), a contact aeration tank (9) containing a biofilm that oxidizes and decomposes organic matter in dialysis wastewater, and a sedimentation tank that removes solids from the dialysis wastewater after aeration treatment by precipitation. Tank (10)
and a disinfection tank (11) that disinfects the dialysis wastewater by adding a disinfectant to the precipitated dialysis wastewater. In addition, this dialysis wastewater treatment equipment includes a transfer device (7), an acidic liquid supply device (3)
, alkaline liquid supply device (4), reducing agent supply device (6)
and a control device (5) for controlling the transfusion device (8).
この制御装置（５）は、例えばマイクロコンピュータ等
よりなり、均質化処理（Ｓｌｌ）において、貯留槽（１
）に設けた水位センサ（５８）によって貯留槽（１）内
の水位が所定値を上回る時に、あるいは、透析装置の操
作の１サイクル時間が経過するごとに、移注装置（７）
を作動させて、貯留槽（１）内の透析排水を反応槽（２
）に移注させるように構成しである。This control device (5) consists of, for example, a microcomputer, etc., and in the homogenization process (Sll), the storage tank (1
) When the water level in the storage tank (1) exceeds a predetermined value according to the water level sensor (58) provided in the dialysis device (7), or every time one cycle of operation of the dialysis device elapses, the transfer device (7)
is activated to transfer the dialysis wastewater in the storage tank (1) to the reaction tank (2).
).
移注装置（７）は貯留槽（１）内の底部から導出された
移注管（７１）と、これに介在させたポンプ（７２）と
、ポンプ（７２）の上流側及び下流側で移注管（７１）
に介在させた各遮断弁（７３）、（７４）とで構成され
、上記移注管（７１）は反応槽（２）の上方まで延長さ
れている。The transfer device (7) includes a transfer tube (71) led out from the bottom of the storage tank (1), a pump (72) interposed therebetween, and a transfer device on the upstream and downstream sides of the pump (72). Injection tube (71)
The transfer pipe (71) extends above the reaction tank (2).
上記反応槽（２）には、透析排水と酸性液、アルカリ性
液あるいは還元剤とを効率良く接触させるためにアジテ
ータ（２１）が設けられる。このアジテータ（２１）は
透析排水と中に突入させた攪拌プロペラ（２１ａ）と、
これを駆動するモータ（２１ｂ）で構成されている。The reaction tank (2) is provided with an agitator (21) in order to efficiently bring the dialysis wastewater into contact with an acidic solution, an alkaline solution, or a reducing agent. This agitator (21) includes dialysis wastewater and a stirring propeller (21a) plunged into it.
It is composed of a motor (21b) that drives this.
そして、上記制御装置（５）には、透析排水ＯＰＨ値を
検出するＰＨセンサ（５１）と、透析排水のＯＨ２値（
酸化還元電位値）を検出するＯＲＰセンサ（５２）と、
反応槽（２）内の水位を検出する水位センサからなる処
理量検出手段（５３）の出力が入力される。The control device (5) includes a PH sensor (51) that detects the dialysis wastewater OPH value, and a PH sensor (51) that detects the dialysis wastewater OPH value (
an ORP sensor (52) that detects the redox potential value);
The output of a throughput detection means (53) consisting of a water level sensor that detects the water level in the reaction tank (2) is input.
上記中和処理（Ｓ１２）では、ＰＨセンサ（５１）でそ
のＰＨ値が検出され、ＰＨセンサ（５１）の検出結果に
従って酸性液を供給するかアルカリ性液を供給するかが
決定され結果に従って、酸性液供給装置（３）あるいは
アルカリ性液供給装置（４）が作動し必要量の酸性液あ
るいはアルカリ性液を供給し、透析排水のＰＨを中性付
近に保つように制御する。In the neutralization process (S12), the PH value is detected by the PH sensor (51), and it is determined whether to supply an acidic liquid or an alkaline liquid according to the detection result of the PH sensor (51). The liquid supply device (3) or the alkaline liquid supply device (4) operates to supply the required amount of acidic or alkaline liquid and control the pH of the dialysis wastewater to be maintained near neutral.
上記酸性液供給装置（３）は、酸性液貯留槽（３１）と
、これから反応槽（２）まで導出された酸性液供給路（
３２）と、該酸性液供給路（３２）に介在させた供給機
構部（３３）とを有する。The acidic liquid supply device (3) includes an acidic liquid storage tank (31) and an acidic liquid supply path (
32), and a supply mechanism section (33) interposed in the acidic liquid supply path (32).
またアルカリ性液供給装置（４）には、酸性液供給装置
（３） と同様に、アルカリ性液貯留槽（４１）と、こ
れから反応槽（２）まで導出されたアルカリ性液供給路
（４２）と、該アルカリ性液供給路（４２）に介在させ
た供給機構部（４３）とが設けられる。In addition, the alkaline liquid supply device (4), like the acidic liquid supply device (3), includes an alkaline liquid storage tank (41) and an alkaline liquid supply path (42) led out from this to the reaction tank (2). A supply mechanism section (43) interposed in the alkaline liquid supply path (42) is provided.
そして、所定時間を経過して中和処理（３１２）が終了
すると、還元処理（Ｓ １３）が開始される。Then, when the neutralization process (312) is completed after a predetermined period of time has elapsed, the reduction process (S13) is started.
還元処理（Ｓ１３）では、酸化還元電位計（ＯＲＰセン
サ） （５２）の検出結果から透析排水を還元するに要
する還元剤の必要量が制御装置（５）で演算され、必要
量の還元剤が反応槽（２）に供給され、る。第４図から
も明らかなようにこの場合、ＯＨ２値がＰＨ７において
３００ｍＶ程度になるようにすれば、酸化度の原因とな
っている殺菌剤による残留塩素はほぼ零に抑えることが
できその後の生物処理が可能となる。In the reduction process (S13), the control device (5) calculates the required amount of reducing agent required to reduce the dialysis wastewater from the detection results of the oxidation-reduction potentiometer (ORP sensor) (52), and the necessary amount of reducing agent is It is supplied to the reaction tank (2). As is clear from Figure 4, in this case, if the OH2 value is set to about 300 mV at pH 7, the residual chlorine caused by the disinfectant, which causes the degree of oxidation, can be suppressed to almost zero, and the subsequent biological processing becomes possible.
上記還元剤供給装置（６）は、還元剤を貯留する還元剤
貯留槽（６１）と、これから反応槽（２）まで導出され
た還元剤供給路（６２）と、該還元剤供給路（６２）に
介在させた供給機構部（６３）とを有しており、中和の
ための酸性液供給装置！（３）あるいはアルカリ性液供
給装置（４）と同様に制御装置（５）によって供給機構
部（６３）が制御される。The reducing agent supply device (6) includes a reducing agent storage tank (61) that stores a reducing agent, a reducing agent supply path (62) led out from the reducing agent storage tank (61) to the reaction tank (2), and the reducing agent supply path (62). ) and a supply mechanism section (63) interposed in the acidic liquid supply device for neutralization! (3) Alternatively, the supply mechanism section (63) is controlled by the control device (5) similarly to the alkaline liquid supply device (4).
上記還元処理（３１３）が終了すると、反応槽（２）内
の透析排水が接触曝気槽（９）に移注され接触曝気処理
（Ｓ１４）が開始される。When the reduction process (313) is completed, the dialysis wastewater in the reaction tank (2) is transferred to the contact aeration tank (9), and the contact aeration process (S14) is started.
そして、接触曝気処理（Ｓ １４）では、接触曝気槽（
９）内で透析排水の有機物が生物膜に接触して酸化分解
され、消失する。ここで、透析排水は上記還元処理を経
て殺傷剤に起因する残留塩素が作用しなくなっているの
で死滅するおそれはなく、高ＢＯＤ値の透析排水中の有
機物を酸化分解により消失させることができる。Then, in the contact aeration treatment (S14), the contact aeration tank (
9) The organic matter in the dialysis wastewater comes into contact with the biofilm, is oxidized and decomposed, and disappears. Here, the dialysis wastewater undergoes the above-mentioned reduction treatment so that the residual chlorine caused by the killing agent no longer acts on it, so there is no fear that it will die, and the organic matter in the dialysis wastewater with a high BOD value can be eliminated by oxidative decomposition.
接触曝気槽（９）において有機物が消失された透析排水
は沈澱槽（１０）に導入され、続いて沈澱処理（Ｓ１４
）が開始される。沈澱処理（Ｓ１４）では、剥離した生
物膜等の固形物を沈澱させて除去した後、その上澄液が
消毒槽（１１）に導かれる。消毒槽（１１）では透析排
水に例えば塩素消毒剤等の消毒剤を添加して消毒処理（
Ｓ１５）が行われる。The dialysis wastewater from which organic matter has been removed in the contact aeration tank (9) is introduced into the sedimentation tank (10), and then subjected to sedimentation treatment (S14).
) is started. In the precipitation process (S14), solid matter such as detached biofilm is precipitated and removed, and then the supernatant liquid is led to the disinfection tank (11). In the disinfection tank (11), a disinfectant such as a chlorine disinfectant is added to the dialysis wastewater for disinfection treatment (
S15) is performed.
そして、この消毒処理（Ｓ １５）が終了すると外部に
放流される。When this disinfection process (S15) is completed, the water is discharged to the outside.
上記実施例はバッチ処理になっているが反応槽での滞留
時間さえ充分であると連続処理も可能である。また、上
記ではＰＨを調整してから還元剤を添加しているが、特
定のＰＨで還元処理してからＰＨ副調整てもよいことは
勿論である。Although the above embodiments are batch treatments, continuous treatments are also possible as long as the residence time in the reaction tank is sufficient. Moreover, although the reducing agent is added after adjusting the pH in the above example, it is of course possible to sub-adjust the pH after performing the reduction treatment at a specific pH.
透析排水を生物膜を用いて効率良く酸化分解処理でき、
ＢＯＤ値を著しく下げることができる。また、残留塩素
計等の高価な機器を用いないでも充分満足のいく結果が
得られる。Dialysis wastewater can be efficiently oxidized and decomposed using biofilm,
The BOD value can be significantly lowered. Furthermore, satisfactory results can be obtained without using expensive equipment such as a residual chlorine meter.
第１図は本出願の発明の一実施例に係る透析排水処理方
法の一実施例を示すフロー図、第２図は本出願の発明の
一実施例に係る透析排水処理装置の構成図、第３図は透
析治療操作サイクルを示すフロー図、第４図はＰＨと残
留塩素濃度との関係を示すグラフである。
〔発明の効果〕FIG. 1 is a flow diagram showing an example of a dialysis wastewater treatment method according to an embodiment of the invention of the present application, FIG. 2 is a block diagram of a dialysis wastewater treatment apparatus according to an embodiment of the invention of the present application, FIG. 3 is a flow diagram showing the dialysis treatment operation cycle, and FIG. 4 is a graph showing the relationship between PH and residual chlorine concentration. 〔Effect of the invention〕
Claims (1)
化還元電位計の電位が一定値以下になるように還元剤を
添加することを特徴とする透析排水処理方法。 〔２〕透析排水中の有機物を生物膜で酸化分解する透析
排水処理方法において、 透析排水のＰＨを中性付近に調整し、その後酸化還元電
位計の電位が一定値以下になるように還元剤を添加して
、透析排水を酸化分解する接触曝気処理をすること、 を特徴とする透析排水処理方法。[Scope of Claims] [1] A method for treating dialysis wastewater, which comprises adding a reducing agent so that the potential of an oxidation-reduction electrometer is below a certain value when removing the influence of a disinfectant in the dialysis wastewater. [2] In a dialysis wastewater treatment method in which organic matter in dialysis wastewater is oxidized and decomposed with a biofilm, the pH of the dialysis wastewater is adjusted to around neutrality, and then a reducing agent is added so that the potential of the oxidation-reduction electrometer is below a certain value. 1. A dialysis wastewater treatment method characterized by the following: performing contact aeration treatment to oxidize and decompose dialysis wastewater by adding .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63219384A JPH0824912B2 (en) | 1988-09-01 | 1988-09-01 | Dialysis wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63219384A JPH0824912B2 (en) | 1988-09-01 | 1988-09-01 | Dialysis wastewater treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0268194A true JPH0268194A (en) | 1990-03-07 |
| JPH0824912B2 JPH0824912B2 (en) | 1996-03-13 |
Family
ID=16734573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63219384A Expired - Fee Related JPH0824912B2 (en) | 1988-09-01 | 1988-09-01 | Dialysis wastewater treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0824912B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004057703A (en) * | 2002-07-31 | 2004-02-26 | L'air Liquide Sa Pour L'etude & L'exploitation Des Procedes Georges Claude | Waste liquid treatment device of hemodialysis unit |
| JP2013230412A (en) * | 2012-04-27 | 2013-11-14 | Swing Corp | Desalting apparatus, and desalting method |
| CN114376355A (en) * | 2021-12-07 | 2022-04-22 | 广东中旗新材料股份有限公司 | Quartz stone kitchen operation system and quartz stone application method |
-
1988
- 1988-09-01 JP JP63219384A patent/JPH0824912B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004057703A (en) * | 2002-07-31 | 2004-02-26 | L'air Liquide Sa Pour L'etude & L'exploitation Des Procedes Georges Claude | Waste liquid treatment device of hemodialysis unit |
| JP2013230412A (en) * | 2012-04-27 | 2013-11-14 | Swing Corp | Desalting apparatus, and desalting method |
| CN114376355A (en) * | 2021-12-07 | 2022-04-22 | 广东中旗新材料股份有限公司 | Quartz stone kitchen operation system and quartz stone application method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0824912B2 (en) | 1996-03-13 |
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