JPS6260155B2 - - Google Patents
Info
- Publication number
- JPS6260155B2 JPS6260155B2 JP10908279A JP10908279A JPS6260155B2 JP S6260155 B2 JPS6260155 B2 JP S6260155B2 JP 10908279 A JP10908279 A JP 10908279A JP 10908279 A JP10908279 A JP 10908279A JP S6260155 B2 JPS6260155 B2 JP S6260155B2
- Authority
- JP
- Japan
- Prior art keywords
- human waste
- bod
- tank
- denitrification
- treatment
- 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.)
- Expired
Links
- 239000010800 human waste Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 18
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 13
- 238000011282 treatment Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 230000001546 nitrifying effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 210000002700 urine Anatomy 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000011221 initial treatment Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
【発明の詳細な説明】 本発明は改良されたし尿の処理方法に関する。[Detailed description of the invention] The present invention relates to an improved method for treating human waste.
従来、し尿を生物学的に脱窒素する場合、し尿
中のBOD（生物易分解性有機物）を脱窒素の有
機炭素源として利用するため、第１図に示すよう
にし尿（Ｕ）を脱窒素(D)した後、硝化（Ｎ）した
硝化液（NL）を循環する硝化液循環法を採つて
いる。しかしながら、この方法ではNOX―Ｎ
（NO2―NO3―Ｎ）１Kgを除去するのにし尿中の
BODが約３Kg必要であり、し尿中のBOD量から
この工程での窒素除去率は必然的に一定の限界が
ある。すなわち窒素除去率（ηN）は次式で表わ
される。 Conventionally, when denitrifying human waste biologically, BOD (biodegradable organic matter) in human waste is used as an organic carbon source for denitrification, so human waste (U) is denitrified as shown in Figure 1. (D) After nitrification (N), the nitrified liquid circulation method is used to circulate the nitrified liquid (NL). However, with this method, NO
(NO 2 -NO 3 -N) in human urine to remove 1 kg
Approximately 3 kg of BOD is required, and the nitrogen removal rate in this process necessarily has a certain limit based on the amount of BOD in human waste. That is, the nitrogen removal rate (η N ) is expressed by the following equation.
ηN≦Ｌｏ／δＮｏ
ηN：窒素除去率、
Lo：し尿中BOD濃度（Kg／m3）、
δ：NOX―N1Kgを除去するのに必要なし尿中
BOD量（Kg）
No：し尿中Ｔ―Ｎ濃度（Kg／m3）
ここで、通常、Lo〓10（Kg／m3）、δ＝３
（Kg）、No〓4.5（Kg／m3）であるから、おおよそ
80％Ｔ―Ｎ除去率が限界である。 η N ≦Lo/δNo η N : Nitrogen removal rate, Lo: BOD concentration in human urine (Kg/m 3 ), δ: NO
BOD amount (Kg) No: TN concentration in human urine (Kg/m 3 ) Here, usually Lo〓10 (Kg/m 3 ), δ=3
(Kg), No = 4.5 (Kg/m 3 ), so approximately
80% TN removal rate is the limit.
そこで、この脱窒能力の限界を向上させるため
に、第２脱窒槽を設置してメタノールを脱窒の有
機炭素源として注入して脱窒を行ない、更にメタ
ノールの残留分を除去するため再曝気槽（空気吹
込）を付加する方法が最近行なわれている。この
方法を第２図で説明すると、し尿（Ｕ）を第１脱
窒槽（D1）で脱窒したものに希釈水（Ｗ）を加え
てBOD濃度を調整後、硝化槽（Ｎ）に送り、硝
化液（NL）の一部を循環させる（以上、１次処
理）と共に、残りの硝化液は第２脱窒槽（D2）に
送つて、BOD源として供給されたメタノール
（Ｍ）で脱窒を行ない、次いで残留BODを再曝気
槽(A)で分解したものを沈降分離（Ｐ）して一部汚
泥（Ｓ）を返送（以上、２次処理）した後、凝沈
(C)、砂過(F)したものをオゾン脱色（Ｏ）して
（以上、３次処理）放流するものである。しかし
ながら、この方法は非常に複雑で、メタノールな
ど薬品費が嵩み、建設コストも莫大なものであ
る。また希釈倍率も約10倍と高く、この点でも不
利である。 Therefore, in order to improve the limit of this denitrification capacity, a second denitrification tank was installed to perform denitrification by injecting methanol as an organic carbon source for denitrification, and further aerate to remove residual methanol. Recently, a method of adding a tank (air blowing) has been used. To explain this method using Figure 2, human waste (U) is denitrified in the first denitrification tank (D 1 ), dilution water (W) is added to adjust the BOD concentration, and then the mixture is sent to the nitrification tank (N). A part of the nitrification liquid (NL) is circulated (the above is the primary treatment), and the remaining nitrification liquid is sent to the second denitrification tank (D 2 ) where it is denitrified using methanol (M) supplied as a BOD source. Nitrogen is carried out, and then residual BOD is decomposed in the reaeration tank (A), sedimentation separation (P) is carried out, and a portion of the sludge (S) is returned (secondary treatment), followed by coagulation.
(C), sand filter (F), ozone decolorization (O) and discharge (tertiary treatment). However, this method is very complicated, requires high costs for chemicals such as methanol, and requires enormous construction costs. Furthermore, the dilution ratio is as high as approximately 10 times, which is also a disadvantage.
本発明者等は第２図法と同程度の窒素除去率を
有し、しかも上記のような操作経済上の欠点をも
たないし尿処理法を提供すべく研究を重ね、本発
明に到達したものである。 The present inventors have conducted extensive research to provide a urine treatment method that has a nitrogen removal rate comparable to that of the Figure 2 method and does not have the operational economic disadvantages mentioned above, and has arrived at the present invention. It is.
本発明は３次処理におけるオゾン処理後の排オ
ゾンガスでし尿を曝気することを特徴とし、これ
によつてし尿中のCOD成分を有効利用可能な
BOD成分に転換して１次処理におけるＴ―Ｎ除
去率を高め、その結果、第２脱窒槽ではメタノー
ル供給が不要となり、そのため残留BODを除去
するための再曝気槽も不要となり、更に排オゾン
を有効利用するので排オゾン処理施設不要で、第
２図法における操作、経済上の欠点を改良するこ
とができるというものである。すなわち、本発明
は被処理用し尿を脱窒、硝化して得られる硝化液
の一部を上記被処理用し尿中に返送して脱窒素の
有機炭素源として利用すると共に、上記硝化液の
残部を沈降分離したのちオゾン処理し、得られる
排オゾンガスを上記被処理用し尿に供給して曝気
を行ない、該し尿中の生物難分解性物を生物易分
解性物に転換させることを特徴とする、し尿の処
理方法に関するものである。 The present invention is characterized by aerating human waste with exhaust ozone gas after ozone treatment in tertiary treatment, thereby making it possible to effectively utilize COD components in human waste.
By converting it into a BOD component, the TN removal rate in the primary treatment is increased, and as a result, methanol supply is no longer necessary in the second denitrification tank.Therefore, a reaeration tank for removing residual BOD is also no longer required, and further ozone Since it makes effective use of ozone, there is no need for an exhaust ozone treatment facility, and the operational and economical disadvantages of the Diagram 2 method can be improved. That is, the present invention denitrifies and nitrifies the human waste to be treated, returns a part of the nitrified liquid to the human waste to be treated, and uses it as an organic carbon source for denitrification, and also uses the remaining part of the nitrified liquid. is subjected to ozone treatment after sedimentation and separation, and the obtained exhaust ozone gas is supplied to the human waste to be treated for aeration, thereby converting the non-biodegradable substances in the human waste into bio-easily degradable substances. , relates to a method for treating human waste.
本発明を第３図を用いて説明する。し尿（Ｕ）
をし尿調整槽（U1）を経由させ、第１脱窒槽
（D1）で脱窒したものに希釈水（Ｗ）を加えて
BOD濃度を調整後、硝化槽（Ｎ）に送り、硝化
液（NL）の一部を循環させると共に、残りの硝
化液は第２脱窒素槽（D2）に送る。前記の如く、
本発明方法では１次処理における窒素除去率が高
いため、第２脱窒槽にBOD源としてメタノール
を外部から供給する必要はなく、微生物が自身の
細胞をBOD源として利用する内性呼吸によつて
硝化液中の流出したNOX―Ｎを除去する。この内
性呼吸ではBODは残留しないため、第２脱窒槽
の後に再曝気槽の必要はない。また上記硝化液の
循環量をあげることによつて、硝化槽に流入する
時点でのBOD濃度は低濃度化、希釈化されるの
で希釈倍率を約５倍と、従来の半分に低減するこ
とができる。 The present invention will be explained using FIG. Human waste (U)
The human waste is passed through the human waste adjustment tank (U 1 ) and denitrified in the first denitrification tank (D 1 ), and then dilution water (W) is added.
After adjusting the BOD concentration, it is sent to the nitrification tank (N), a part of the nitrification liquid (NL) is circulated, and the remaining nitrification liquid is sent to the second denitrification tank (D 2 ). As mentioned above,
In the method of the present invention, the nitrogen removal rate in the primary treatment is high, so there is no need to externally supply methanol as a BOD source to the second denitrification tank. Removes NO x -N released from the nitrifying solution. Since no BOD remains in this endogenous respiration, there is no need for a re-aeration tank after the second denitrification tank. In addition, by increasing the circulation rate of the nitrification solution, the BOD concentration at the time it flows into the nitrification tank is lowered and diluted, making it possible to reduce the dilution ratio to approximately 5 times, which is half of the conventional level. can.
このように脱窒処理を施した後、沈殿槽（Ｐ）
で沈降分離して一部汚泥を返送（S1）、余剰汚泥
（S2）を排出した後、凝沈(C)、砂過(F)したものを
オゾン処理（Ｏ）によつて脱色、COD除去を行
ない、この排オゾンガス（O′）をし尿調整槽
（U1）に送つてし尿中のCODをBODに転換させる
ものである。オゾンは高分子有機物を低分子化す
る機能をもつており、高分子のために難分解であ
つたものを低分子として易分解性物にするため、
COD（生物難分解性有機物＋生物易分解性有機
物）をBOD（生物易分解性有機物）に変換でき
るものである。 After performing denitrification treatment in this way, the sedimentation tank (P)
After settling and separating the sludge, some of the sludge is returned (S 1 ), and after discharging the excess sludge (S 2 ), it is coagulated (C), sand filtered (F), and decolorized by ozone treatment (O). After removing COD, this exhaust ozone gas (O') is sent to the human waste adjustment tank (U 1 ) to convert the COD in the human waste into BOD. Ozone has the function of converting high-molecular organic substances into low-molecular substances.
It can convert COD (biodegradable organic matter + biodegradable organic matter) into BOD (biodegradable organic matter).
第３図の工程で、し尿（BOD：10000ppm、
SS：10000ppm、Ｔ―Ｎ：4500ppm）を処理（第
１脱窒槽：PH７、DO（（溶存酸素））＝0ppm、硝
化槽：PH７、DO＝3ppm、第２脱窒槽：DO＝
0ppm）したところ、処理液はBOD：10ppm、
SS：10ppm、Ｔ―Ｎ：5ppmで充分放流可能なも
のであつた。 In the process shown in Figure 3, human waste (BOD: 10000ppm,
(SS: 10000ppm, T-N: 4500ppm) (1st denitrification tank: PH7, DO ((dissolved oxygen)) = 0ppm, nitrification tank: PH7, DO = 3ppm, 2nd denitrification tank: DO =
0ppm), the processing solution had a BOD of 10ppm,
SS: 10 ppm and TN: 5 ppm were sufficient for discharge.
図面はし尿処理の工程を示すもので、第１図は
基本的なもの、第２図は現在用いられているも
の、第３図は本発明方法に関するものである。
The drawings show the process of human waste treatment; FIG. 1 shows the basic process, FIG. 2 shows the process currently used, and FIG. 3 shows the method of the present invention.
Claims (1)
液の一部を上記被処理用し尿中に返送して脱窒素
の有機炭素源として利用すると共に、上記硝化液
の残部を沈降分離したのちオゾン処理し、得られ
る排オゾンガスを上記被処理用し尿に供給して曝
気を行ない、該し尿中の生物難分解性物を生物易
分解性物に転換させることを特徴とする、し尿の
処理方法。1 A part of the nitrified liquid obtained by denitrifying and nitrifying the human waste to be treated was returned to the human waste to be treated and used as an organic carbon source for denitrification, and the remaining part of the nitrified liquid was separated by sedimentation. Treatment of human waste, which is characterized in that it is then subjected to ozone treatment, and the resulting waste ozone gas is supplied to the human waste to be treated for aeration, thereby converting non-biodegradable substances in the human waste to easily biodegradable substances. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10908279A JPS5633096A (en) | 1979-08-29 | 1979-08-29 | Treatment of raw sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10908279A JPS5633096A (en) | 1979-08-29 | 1979-08-29 | Treatment of raw sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5633096A JPS5633096A (en) | 1981-04-03 |
| JPS6260155B2 true JPS6260155B2 (en) | 1987-12-15 |
Family
ID=14501136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10908279A Granted JPS5633096A (en) | 1979-08-29 | 1979-08-29 | Treatment of raw sewage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5633096A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716673B2 (en) * | 1985-12-04 | 1995-03-01 | 株式会社明電舍 | Wastewater treatment method |
-
1979
- 1979-08-29 JP JP10908279A patent/JPS5633096A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5633096A (en) | 1981-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3172965B2 (en) | Sewage treatment method | |
| JPH04349997A (en) | Treatment of organic waste water | |
| JP3099839B2 (en) | Wastewater treatment method by activated sludge method | |
| JP2661093B2 (en) | Wastewater treatment method by activated sludge method | |
| JPH1157773A (en) | Biological dephosphorization equipment | |
| JPH0788500A (en) | Method for treating sewage countercurrent water | |
| JP3449862B2 (en) | Advanced purification method for organic wastewater | |
| JPH0639396A (en) | Method for treating waste water | |
| JPS6260155B2 (en) | ||
| JP3916697B2 (en) | Wastewater treatment method | |
| JP3327979B2 (en) | Septic tank sludge treatment method and equipment | |
| JPS58104696A (en) | Treatment of waste water | |
| JPH0649197B2 (en) | Organic wastewater treatment method | |
| KR100228739B1 (en) | Disposal method of organic wastewater using oxygen | |
| JP3257943B2 (en) | Wastewater treatment method | |
| JPH0722756B2 (en) | Biological denitrification and dephosphorization methods for wastewater | |
| JPH06190396A (en) | Purifying treatment of nitrogen-containing sewage | |
| JPH038840B2 (en) | ||
| JPH1052696A (en) | Method for combined treatment of human waste and private sewerage plant sludge | |
| JPH07256295A (en) | Treatment of sewage return water | |
| JP2874127B2 (en) | How to remove nitrogen from organic wastewater | |
| JPS6253238B2 (en) | ||
| JPH0659480B2 (en) | Advanced treatment method for organic wastewater | |
| JPH0679714B2 (en) | Organic wastewater treatment method | |
| JPS61146395A (en) | Method for denitrifying biologically waste water |