JPH0332799A - Treatment of activated sludge - Google Patents
Treatment of activated sludgeInfo
- Publication number
- JPH0332799A JPH0332799A JP1169181A JP16918189A JPH0332799A JP H0332799 A JPH0332799 A JP H0332799A JP 1169181 A JP1169181 A JP 1169181A JP 16918189 A JP16918189 A JP 16918189A JP H0332799 A JPH0332799 A JP H0332799A
- Authority
- JP
- Japan
- Prior art keywords
- rate
- nitrification
- endorespiration
- injection rate
- calculated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- HTKFORQRBXIQHD-UHFFFAOYSA-N allylthiourea Chemical compound NC(=S)NCC=C HTKFORQRBXIQHD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229960001748 allylthiourea Drugs 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract 4
- 239000001301 oxygen Substances 0.000 claims abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052799 carbon Inorganic materials 0.000 claims abstract 2
- 238000000354 decomposition reaction Methods 0.000 claims abstract 2
- 230000036284 oxygen consumption Effects 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 10
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 10
- 230000001629 suppression Effects 0.000 claims description 6
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000029087 digestion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000238413 Octopus Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 125000000746 allylic group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000010865 sewage Substances 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
Landscapes
- Activated Sludge Processes (AREA)
Abstract
Description
【発明の詳細な説明】
Ａ、産業上の利用分野
本発明は活性汚泥処理方法に係り、特にアリルチオ尿素
を用いて呼吸速度を測定制御する活性汚泥処理方法に関
する。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to an activated sludge treatment method, and particularly to an activated sludge treatment method in which respiration rate is measured and controlled using allylthiourea.
１１ 、発明の概要
本発明は、活ｆ［ミ汚泥処理方法において、アリルチオ
尿素、拭薬による相比抑制が不十分な期間までのデータ
は使用Ｕ・ず、該期間経過以後の稍化が完全に抑制され
た時点でのデータを使用ずろことにより、
アリルチオ尿素添加後の呼吸速度の真性値を得る。11. Summary of the Invention The present invention provides that, in the activated f[mi] sludge treatment method, the data up to the period when the phase ratio suppression by allylthiourea and wiping agent is insufficient are not used, and the deterioration after the period has completely disappeared. By using the data at the time when the allylic thiourea is suppressed, the true value of the respiration rate after the addition of allylthiourea is obtained.
Ｃ０従来の技術
都市下水処理においては活性汚泥処理が一般に行われて
いる。この活性汚泥処理（よ、［（ＯＤ資化抑制される
消化抑制効果条件下での内生呼吸速度を算出すると」（
に、この内生呼吸速度の算出（１″ｔにＭづいて前記ア
リルチオ尿水の注入率を算出する活性汚泥処理方法にお
いて、ｆｌｒｊ記アリルチオ尿累の尿水率で決まる蛸化
抑制効果迎れ時間以後のデータを用いて内生呼吸速度を
演算する。C0 Conventional Technology Activated sludge treatment is commonly used in municipal sewage treatment. This activated sludge treatment (Yo, [(If we calculate the endogenous respiration rate under conditions where OD assimilation is suppressed and has a digestive inhibitory effect,
In the activated sludge treatment method in which the injection rate of allylthiolurine water is calculated based on the calculation of the endogenous respiration rate (1" t, Calculate the endogenous respiration rate using the data after the time.
Ｆ、実施例
以下に本発明の実施例を図面を参Ｉｔ！ｉ Ｌながら説
明する。F. Examples Please refer to the drawings for examples of the present invention below! I will explain while listening.
本実施例にむイテ（ヨ、Ａ ’Ｉ” ＬＪ −ｒｒの測
定装置１Ｙｌにおいて、Ａ １’ Ｕ注入率で決まる哨
化抑制効果ノヱれ時間（ＬＴ）以降のデータを用いてＡ
ｉ’ＬＪ−ｒｒを演算処理する。ここで、Ａ ’Ｉ’
Ｕ注入率で訣まる梢化抑制効果遅れ時間（ＬＴ）とは、
第１図に示すようなＡＴＵ注入注入率、′ｒとの関係を
いう。これにより、例えば、Ａ ｉ’ Ｕ注入率をＩＯ
Ｂ、Ｑにした場合にはＬ ’Ｉ’ （直（よ約４，７分
となる。自動測足独１１すに本方式を適用する場合、哨
化抑制効果遅れ時間（Ｌｉ’）を設定し、Ｌ ’Ｉ”以
前のデータを除夫し、１、′Ｖ時間以後のデータを用い
てＡＴＵ−ｒｒを求める。In this example, in the measuring device 1Yl of A 'I' LJ -rr, A '
Compute i'LJ-rr. Here, A 'I'
What is the lag time (LT) for the effect of suppressing tree growth, which is determined by the U injection rate?
This refers to the relationship between the ATU injection rate and 'r' as shown in FIG. This allows, for example, to reduce the A i' U injection rate to IO
When set to B or Q, L 'I' (direct (approximately 4.7 minutes). When applying this method to automatic footing, set the delay time (Li') for the effect of suppressing patrolling. Then, data before L'I'' is removed, and ATU-rr is obtained using data after 1,'V time.
また、Ｌ′ｒ時間以後のＩ） Ｏに１度減少直線データ
よりその減少速度、すなわちＡ’ｌ’Ｕ−ｒｒ値を演算
する方法としてＬ′ｒ以降の必要最小限のデータ数（設
定）を用い、最小二重法などに上り推定ずろ。In addition, as a method of calculating the decreasing speed, that is, the A'l'U-rr value, from the linear data that decreases once in I) O after the time L'r, the minimum number of data required after the L'r (setting) Using , the least double method etc. can be used to estimate the difference.
注入率を２〜１０ｍｇ／ｆ２の範囲の適正ム注入率を選
択し、Ｌ′Ｆ設定誤差に上るＡ ７１’ Ｕ −ｒｒｒ
ｒＺへの影響をできるたけ小さくする。Select an appropriate injection rate in the range of 2 to 10 mg/f2, and if the injection rate exceeds the L'F setting error, A 71' U -rrr
Minimize the influence on rZ as much as possible.
」二記実施例の活性汚泥処理方法において、Ａ′ｒＵ試
薬の注入率が２ｍ９／Ｑ、４ ｔｎ９／ Ｑ、、 Ｉ
Ｏｍ９／ Ｑ、２０畔／Ｑに収るようにそれぞれ調整
した後各Ａｉ”Ｕ−ｒｒを測定し、抑制の遅れ時間Ｌ
’Ｉ’ ？ Ａ１’Ｕ−ｒｒ値にどのような影響を与え
るか尖験した。この結果を第１図および第２図の曲線Ｑ
、に示ず。 この結果より明らかなように、注入率が高
くなるにつれて、Ｌ′ｒが小さくなる傾向がみられるが
、下水拭験法の２ｍ９／Ｑの１０倍である２０ｍ９／
ｉ７にしても注入率２ ｍ９／ ｉ２のＬ ’Ｉ’ −
＝ ５ 、５分から注入率２０Ｂ／Ｑの場合のＬ ’ｌ
’ ＝ ３ 、７分に短酪されるたけ大きな改違（上期
待できないことがわかる。また、第２図の曲線Ｑ、に示
すように、Ａ ’ｌ’ Ｕ試薬により消化が完全に抑制
された時点でのＡ′ｒＵ−ｒｒ値（ＡＴＵ ｒｒｔ）
が初期ｔＤ Ａ ’１’ Ｕ −ｒ ｒｆｐ’１（ＡＴ
Ｕ−ｒｒｌ）とどノ枕度異なるかを（（Ａ’ｌ”ＬＪｒ
ｒｌ） （Ａ ｉ’ Ｕ ｒｒｔ）） Ｘ １０
０（％）で求めると、Ａ ’１’ Ｕ ｒｔ人率が２ｍ
Ｗ／（ｌの場合が８８．７％と高いのに灯して、注入率
が４ ｍ’ｉ／（１以上の場合は平均で２５％とほぼ一
定にむることかｆＪＩる。In the activated sludge treatment method of Example 2, the injection rate of A'rU reagent is 2 m9/Q, 4 tn9/Q, I
After adjusting each to fit within Om9/Q and 20/Q, measure each Ai''U-rr, and calculate the suppression delay time L.
'I'? We tested the effect on the A1'U-rr value. This result is expressed as the curve Q in Figures 1 and 2.
, not shown. As is clear from this result, there is a tendency for L′r to decrease as the injection rate increases;
Even if i7, the injection rate is 2 m9/i2 L 'I' −
= 5, L'l for injection rate 20B/Q from 5 minutes
' = 3, the digestion was shortened to 7 minutes, indicating that it was not as expected. Also, as shown in curve Q in Figure 2, the digestion was completely suppressed by the A 'l' U reagent. A'rU-rr value at the time (ATU rrt)
is the initial tD A '1' U-r rfp'1(AT
Which pillow degree is different from ((A'l"LJr)
rl) (A i' U rrt)) X 10
When calculated as 0 (%), A '1' U rt person rate is 2m
Although the injection rate is as high as 88.7% in the case of W/(l), when the injection rate is 4 m'i/(1 or more, it is almost constant at 25% on average).
本文験上り、■ｔｉ人率を高くしても抑制効果のＵれ時
間（Ｌ ｉ” ）の短縮はあまりむく、ずムわ１３１Ｌ
人串を高くしてもある一定時間の遅れは仔在する、■注
入率をあろ値組」二（ここでは４ｍｙ／（ｌ以−に）に
づ゛ると、初期Ａｉ”Ｕ−ｒｒ値（Ａ ’ｌ’ ＩＪ−
ｒｒ、）と、完全抑制時ノＡ Ｔ Ｕ −ｒｒｆｌＩＩ
ｉ（Ａ ｉ’ Ｕ −ｒｒｔ）との差が小さくなること
が明らかとなった。Based on this article's experience, ■ Even if the rate of people is increased, the suppression effect of reducing the time (L i") is not so much reduced, Zumuwa131L
Even if the injection rate is increased, there will still be a certain amount of time delay. If the injection rate is set to 2 (here, 4my/(from l)), then the initial Ai"U-rr value (A 'l' IJ-
rr, ), and when fully inhibited, A T U -rrflII
It has become clear that the difference from i(A i' U -rrt) becomes smaller.
また、ＡＴＵ−ｒｒ測測定自動を含む）の目標を、（ａ
）ｆｌ化をほぼ完全に抑制している時点でのＡ ＴＵ
−ｒｒ値を求める、（ｂ） Ａ ’ｌ’ Ｕ試薬注入出
は必要最小限とするの２項［」とし、また、一般に、測
定開始より時間が経過する程、（イ）水温変化の影響が
出やすい、（ロ）ｌ）ＯΩ度律速の影響が大きくなる等
の影響がでてくるため、測定開始にできる１り１４り近
いデータを用いることが不可欠である。In addition, the goal of (a
) A TU at the time when fl conversion is almost completely suppressed
- Calculate the rr value, (b) A 'l' U Reagent injection and output should be kept to the minimum necessary. In general, as time passes from the start of measurement, (a) The effect of water temperature changes will be greater. It is essential to use data close to 1 to 14 that can be obtained at the start of the measurement, because (b) l) the influence of the OΩ rate-determining becomes large.
これにより、上記の項の注入出より決まる抑制効果遅れ
時間（Ｌ ’１”）までのデータを除き、Ｌ ’Ｉ’以
後の必要最小限のデータを用いてその【〕０減少速度か
らＡ’ｌ”Ｕ−ｒｒを求めることにより上記［１的を達
成することができろ。さらに、上記■頂の注入出につい
ては、抑制効果近れ時間（ｌ、′ｒ）がサンプルにより
多少シフトする場合があるので初期ＡＴＯ−ｒｒ値（Ａ
’ｌ’Ｕ −ｒｒ、）と完全抑制御！ｉのＡ１’Ｕ−ｒ
ｒ（直（Ａ’ｌ’Ｕ ｒｒｔ）との差の小さい２〜１
０ｍ９／Ｉ２の範囲が適正注入率範囲となる。As a result, excluding the data up to the suppression effect delay time (L '1'') determined by the injection/output in the above term, using the minimum necessary data after L 'I', the rate of decrease from []0 to A' By finding l''U-rr, objective 1 above can be achieved. Furthermore, regarding the injection at the top of the above (①), the initial ATO-rr value (A
'l'U -rr,) and complete control! A1'U-r of i
2 to 1 with a small difference from r (direct (A'l'U rrt)
The range of 0 m9/I2 is the appropriate injection rate range.
Ｇ１発明の効果
本発明は以上の如くであって、次のようム効果を奏する
しのである。G1 Effects of the Invention The present invention is as described above, and has the following effects.
（１）Ａ’ｌ’Ｕ試薬による哨化仰制が不十分な期間、
即し、’Ｉ’ −Ｌ ’１’までのデータは使用せず、
Ｌ′ｒ時間経過以後の蛸化が完全に抑制された、時点で
のデータを性用することにより、Ａ’ｌ’Ｕ−ｒｒの１
′美ｆ〆（を求めることが可能となった。(1) A period during which surveillance by the A'l'U reagent is insufficient;
Therefore, the data from 'I' to '1' is not used,
1 of A'l'U-rr by using the data at the point in time when the octopus formation after the passage of L'r time was completely suppressed.
It became possible to find ′beau f〆(.
（２）適正なＡ ’ｌ” Ｕ注入率の選択が可能である
。(2) It is possible to select an appropriate A'l''U injection rate.
ずむわち、Ａｉ’Ｕ−ｒｒの真値を求めるのに必要なＡ
、’ｌ’ Ｕ注入出の適正μ度頴囲が２〜ＩＯＢ／（と
明らかになった。In other words, A required to find the true value of Ai'U-rr
, 'l' The appropriate μ degree circumference for U injection and extraction was found to be 2~IOB/(.
この適正範囲でＡ ’１’ Ｕ注入率を決定することに
より、哨化抑制効果遅れ時間（Ｌ ｉ’ ）値に多少の
誤差が含まれてら、初期Ａ’ｌ’Ｕ−ｒｒ値（Ａ ’Ｉ
’ Ｕｒｒ１）と完全消化抑制時のＡＴＵ−ｒｒ値（Ａ
’ｌ’Ｕ ｒｒｔ）との差が小さくムるため、ＡＴＯ
−ｒｒ値は真値に近い値を求めることができる。By determining the A'1'U injection rate within this appropriate range, even if the patrol suppression effect delay time (L i') value contains some error, the initial A'l'U-rr value (A' I
'Urr1) and the ATU-rr value (A
'l'U rrt) is small, so ATO
-rr value can be determined to be close to the true value.
また、必要最小限の注入率選択により、Ａ ’ｌ’ Ｕ
試薬哨費瓜の削成が図れる。In addition, by selecting the minimum necessary injection rate, A 'l' U
Reagent costs can be reduced.
第１図は本発明の活ＰＬ汚泥処工１１！方法に才ｊけろ
アリルチオ尿素注入率に対する１１ｒ１化抑制遅れ時間
特仕図、第２図アリルチオ尿素注入率に対ずろ内生呼吸
速度の特姓図、第３図は溶仔酸素農度のｌ”？ ｆｉｌ
特姓図である。
外
名
第１図
ＡＴＵ試葦し主）Ｘ率のＬＴへの彩１
（ＭＬＳＳ ２０００ｍｇ／ｌ）
３ヱλ率（ｍｑ／Ｌ）
第２図
Ａｖｕｇｆｆｉ庄、〉、’？ ／ｌ Ａ Ｔ Ｕ−ｒｒ
ａ！−、／）ｌ’、％ｌ！（ΔＡＴＵ−ｒｒ＝ＡＴＬＪ
−ｒｎ −ＡＴ Ｕ−ｒｒｚ ）范）Ｘ、率（ｍｇ／Ｌ
）
第３図
Ａ丁Ｕ−ｒｒ滑１定時ハＤＯ濃戻変化
−Ｔ （＃）Figure 1 shows activated PL sludge treatment 11 of the present invention! Figure 2 is a characteristic diagram of the 11r1 conversion inhibition delay time versus allylthiourea injection rate, Figure 2 is a characteristic diagram of endogenous respiration rate versus allylthiourea injection rate, and Figure 3 is a characteristic diagram of the 11r1 conversion delay time versus allylthiourea injection rate. ?fil
This is a characteristic map. Foreign name Fig. 1 ATU test master) Aya to LT of X rate 1 (MLSS 2000mg/L) 3ヱλ rate (mq/L) Fig. 2 Avugffi Sho,〉,'? /l A T U-rr
a! -, /)l',%l! (ΔATU-rr=ATLJ
-rn -AT U-rrz )范)X、Rate(mg/L
) Fig. 3 A-T U-rr slide 1 regular time change in concentration of DO concentration-T (#)
Claims (1)
素量と内生呼吸に必要な酸素量に基づいて酸素消費速度
を算出し、アリルチオ尿素添加により硝化反応が抑制さ
れる硝化抑制効果条件下での内生呼吸速度を算出すると
共に、この内生呼吸速度の算出値に基づいて前記アリル
チオ尿素の注入率を算出する活性汚泥処理方法において
、前記アリルチオ尿素の注入率で決まる硝化抑制効果遅
れ時間以後のデータを用いて内生呼吸速度を演算するこ
とを特徴とする活性汚泥処理方法。(1) Oxygen consumption rate is calculated based on the amount of oxygen required for decomposition of carbon substrates and the amount of oxygen required for endogenous respiration in activated sludge treatment, and the nitrification-inhibiting effect condition where the addition of allylthiourea suppresses the nitrification reaction In an activated sludge treatment method that calculates the endogenous respiration rate at , and calculates the injection rate of allylthiourea based on the calculated value of the endogenous respiration rate, the nitrification suppression effect delay time determined by the injection rate of allylthiourea An activated sludge treatment method characterized by calculating an endogenous respiration rate using subsequent data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1169181A JPH0332799A (en) | 1989-06-30 | 1989-06-30 | Treatment of activated sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1169181A JPH0332799A (en) | 1989-06-30 | 1989-06-30 | Treatment of activated sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0332799A true JPH0332799A (en) | 1991-02-13 |
Family
ID=15881748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1169181A Pending JPH0332799A (en) | 1989-06-30 | 1989-06-30 | Treatment of activated sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332799A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS616696A (en) * | 1984-06-21 | 1986-01-13 | 松下電器産業株式会社 | Fracturing tendency detector |
| JPH05337489A (en) * | 1992-06-02 | 1993-12-21 | Shikoku Chem Corp | Method for preventing floatation of activated sludge |
| US6146896A (en) * | 1996-09-19 | 2000-11-14 | Lar Analytik Und Umweltmesstechnik Gmbh | Method and apparatus for measuring the nitrification effectiveness of activated sludge |
| WO2003062817A3 (en) * | 2002-01-25 | 2004-01-29 | Strathkelvin Instr Ltd | Method of measuring the toxicity of a fluid on activated sludge bacteria |
-
1989
- 1989-06-30 JP JP1169181A patent/JPH0332799A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS616696A (en) * | 1984-06-21 | 1986-01-13 | 松下電器産業株式会社 | Fracturing tendency detector |
| JPH05337489A (en) * | 1992-06-02 | 1993-12-21 | Shikoku Chem Corp | Method for preventing floatation of activated sludge |
| US6146896A (en) * | 1996-09-19 | 2000-11-14 | Lar Analytik Und Umweltmesstechnik Gmbh | Method and apparatus for measuring the nitrification effectiveness of activated sludge |
| WO2003062817A3 (en) * | 2002-01-25 | 2004-01-29 | Strathkelvin Instr Ltd | Method of measuring the toxicity of a fluid on activated sludge bacteria |
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