【特許請求の範囲】
【請求項１】 嫌気性消化を行なう有機性廃液の処理方法であって、
流入する有機性廃液、嫌気性消化を行なう工程から引き抜かれた消化汚泥、および該消化汚泥を固液分離したのちの固形物である濃縮汚泥の少なくともひとつ、あるいは該有機汚泥、消化汚泥または当該濃縮汚泥の混合物中の固形物の少なくとも一部分を分散させる分散処理工程と、
該分散処理後の有機性廃液、消化汚泥または当該濃縮汚泥、あるいは該有機汚泥、消化汚泥または当該濃縮汚泥の混合物中の有機物を改質する改質処理工程と、
該改質処理後の有機性廃液、消化汚泥または当該濃縮汚泥、あるいは該有機汚泥、消化汚泥または当該濃縮汚泥の混合物を溶液と固形物とに分離する分離工程と、
該分離工程後の固形物を嫌気性消化を行なう工程
とを含む方法。
【請求項２】 前記分離工程後の前記溶液からリンを回収するリン回収工程とをさらに含む請求項１記載の方法。
【請求項３】 前記リン回収工程後の溶液の一部または全部を嫌気性消化を行う槽に導入して当該溶液の嫌気性消化を行う請求項２記載の方法。
【請求項４】 前記リン回収工程において、リンを固形状のリン酸カルシウムとして回収する請求項１〜３のいずれかに記載の方法。
【請求項５】 前記嫌気性消化を行なう工程における消化汚泥の濃度、ｐＨ、嫌気度および消化汚泥の微生物活性のうち少なくとも１つを計測し、該計測結果に応じて前記分散処理または前記改質処理を制御する請求項１〜４のいずれかに記載の方法。
【請求項６】 前記流入する有機性廃液の固形物濃度、ｐＨおよび嫌気度のうち少なくとも１つを計測し、該計測結果に応じて前記分散処理または前記改質処理を制御する請求項１〜５のいずれかに記載の方法。
【請求項７】 前記分散処理または前記改質処理において、処理中または処理後の有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物について、有機物濃度、固形物濃度、ｐＨ、嫌気度および微生物活性のうち少なくとも１つを計測し、該計測結果に応じて、前記分散処理または前記改質処理を制御する請求項１〜６のいずれかに記載の方法。
【請求項８】 前記改質処理後の有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物に対して、もしくは
前記改質処理後の有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物から分離した溶液中に対して
リン濃度を計測し、該計測結果に応じて前記分散処理または前記改質処理を制御する請求項２〜７のいずれかに記載の方法。
【請求項９】 前記改質処理後の有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物に対して、もしくは
前記改質処理後の有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物から分離した溶液中に対して
リン濃度を計測し、該計測結果に応じて前記リン回収工程を制御する請求項２〜８のいずれかに記載の方法。
【請求項１０】 嫌気性消化を行なう装置を備える有機性廃液の処理装置であって、
流入する有機性廃液、該嫌気性消化を行なう装置から引き抜かれた消化汚泥、および該消化汚泥を固液分離したのちの固形物である濃縮汚泥の少なくともひとつ、あるいは該有機汚泥、消化汚泥または当該濃縮汚泥の混合物における固形物の少なくとも一部分を分散させる分散処理装置と、
該分散処理装置で処理されたのちの有機性廃液、消化汚泥および当該濃縮汚泥の少なくともひとつ、あるいは該有機汚泥、消化汚泥または当該濃縮汚泥の混合物中の有機質を改質する改質処理装置と、
該改質処理装置で処理されたのちの有機性廃液、消化汚泥または当該濃縮汚泥、あるいは該有機汚泥、消化汚泥または当該濃縮汚泥の混合物を溶液と固形物に分離する分離装置と、
該分離装置で処理されたのちの固形物を前記嫌気性消化を行なう装置に導入する導入装置
とを備える装置。
【請求項１１】 前記分離装置で処理されたのちの前記溶液からリンを回収するリン回収装置をさらに備える請求項１０記載の装置。
【請求項１２】 溶液からリンを回収する前記リン回収装置においてリン回収後の溶液の一部または全部を導入して、嫌気性消化を行うための槽をさらに備えてなる請求項１０〜１１のいずれかに記載の装置。
【請求項１３】 前記リン回収装置において、リンを固形状のリン酸カルシウムとして回収する手段を備える請求項１１〜１２のいずれかに記載の装置。
【請求項１４】 前記嫌気性消化を行なう装置内の消化汚泥の濃度、ｐＨ、嫌気度および消化汚泥の微生物活性のうち少なくとも１つを計測するための計測装置と、該計測装置の計測結果に応じて前記分散処理または前記改質処理を制御するコントローラとを備える請求項１０〜１３のいずれかに記載の装置。
【請求項１５】 前記流入する有機性廃液の固形物濃度、ｐＨおよび嫌気度のうち少なくとも１つを計測するための計測装置と、該計測装置の計測結果に応じて前記分散処理または前記改質処理を制御するコントローラとを備える請求項１０〜１４のいずれかに記載の装置。
【請求項１６】 前記分散処理または前記改質処理において、処理される有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物について、有機物濃度、固形物濃度、ｐＨ、嫌気度または活性のうち少なくとも１つを計測するための計測装置と、該計測装置の計測結果に応じて前記分散処理または前記改質処理を制御するコントローラとを備える請求項１０〜１５のいずれかに記載の装置。
【請求項１７】 前記改質処理後の有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物に対して、もしくは
前記改質処理後の有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物から分離した溶液中に対して
リン濃度を計測するための計測手段と、該計測手段の計測結果に応じて前記分散処理または前記改質処理を制御するコントローラとを備える請求項１１〜１６のいずれかに記載の方法。
【請求項１８】 前記改質処理後の有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物に対して、もしくは
前記改質処理後の有機性廃液、消化汚泥または前記濃縮汚泥、あるいは該有機汚泥、消化汚泥または前記濃縮汚泥の混合物から分離した溶液中に対して
リン濃度を計測する計測手段と、該計測手段の計測結果に応じてリン回収装置の運転を制御するコントローラとを備える請求項１１〜１７のいずれかに記載の装置。
[Claims]
Claims: 1. A method for treating an organic waste liquid which performs anaerobic digestion,
Organic liquid waste flowing, anaerobic digestion has been withdrawn from the step of performing a digested sludge, and at least one of a solid which is concentrated sludge After solid-liquid separation the digested sludge or organic sludge, digested sludge or the concentrated A dispersion treatment step of dispersing at least a portion of the solids in the mixture of sludge,
A reforming process for reforming organic waste liquid after the dispersion treatment, digested sludge or the concentrated sludge, or organic sludge, organic matter in the mixture of digested sludge or the concentrated sludge,
Organic waste liquid after said modification treatment, a separation step of separating the digested sludge or the concentrated sludge, or organic sludge, a mixture of the digested sludge or the concentrated sludge to a solution and solids,
Performing anaerobic digestion of the solid after the separation step.
2. The method according to claim 1, further comprising a phosphorus recovery step of recovering phosphorus from the solution after the separation step.
3. The method according to claim 2, wherein a part or all of the solution after the phosphorus recovery step is introduced into a tank for performing anaerobic digestion to perform anaerobic digestion of the solution.
4. A wherein phosphorus recovery process, method according to claim 1 for recovering phosphorus as solid calcium phosphate.
The concentration of the digested sludge in claim 5 wherein the step of performing said anaerobic digestion, pH, anaerobic degree and at least one of the microbial activity of the digested sludge was measured, the dispersion treatment or the modification in accordance with the measurement result The method according to any one of claims 1 to 4, wherein the processing is controlled.
6. The solids concentration of the organic wastewater to the inlet, at least one of pH and anaerobic degree is measured, according to claim 1 for controlling the distributed processing or the modification process in response to the measurement result 5. The method according to any one of 5 .
7. The above dispersion treatment or the modification treatment, organic waste liquid after being processed or processed, digested sludge or the concentrated sludge or organic sludge, for a mixture of the digested sludge or the concentrated sludge, organic substance concentration, The method according to any one of claims 1 to 6 , wherein at least one of solid concentration, pH, anaerobicity, and microbial activity is measured, and the dispersion treatment or the reforming treatment is controlled according to the measurement result. .
8. The organic waste liquid after the modification treatment, digested sludge or the concentrated sludge or organic sludge, based on the mixture of digested sludge or the concentrated sludge or organic waste liquid after the modification treatment, digested sludge or the concentrated sludge or organic sludge, the phosphorus concentration against the solution separated from the mixture of digested sludge or the concentrated sludge is measured, controls the distributed processing or the modification process in response to the measurement result the method of any of claims 2-7 for.
9. Organic waste liquid after the modification treatment, digested sludge or the concentrated sludge or organic sludge, based on the mixture of digested sludge or the concentrated sludge or organic waste liquid after the modification treatment, claim 2 digested sludge or the concentrated sludge or organic sludge, the phosphorus concentration against the solution separated from the mixture of digested sludge or the concentrated sludge is measured, controls the phosphorus recovery process in response to the measurement result The method according to any one of claims 1 to 8 .
10. An organic waste liquid treatment apparatus provided with an apparatus for performing anaerobic digestion,
Organic liquid waste flowing, digested sludge is withdrawn from the apparatus for performing the anaerobic digestion, and the digested sludge at least one thickened sludge is solid After solid-liquid separation or the organic sludge, digested sludge or the A dispersion treatment device for dispersing at least a portion of the solid matter in the mixture of the concentrated sludge,
And modification apparatus for modifying organic waste after being processed by the distributed processing unit, at least one of the digested sludge and the concentrated sludge, or organic sludge, the organic in the mixture of digested sludge or the concentrated sludge,
Organic waste after being processed by the reforming apparatus, a separating device for separating the digested sludge or the concentrated sludge, or organic sludge, a mixture of the digested sludge or the concentrated sludge to a solution and solids
An introduction device for introducing the solid matter processed by the separation device into the anaerobic digestion device.
Wherein said said after being processed by the separator solution further comprises a phosphorus recovery apparatus for recovering phosphorus from apparatus of claim 10.
12. introducing a part or all of the solution after phosphorus recovery in the phosphorus recovery apparatus for recovering phosphorus from solution, according to claim 10 to 11 comprising further comprising a bath for performing anaerobic digestion An apparatus according to any of the preceding claims.
13. The phosphorus recovery device, device according to any one of claims 11-12, comprising means for recovering phosphorus as solid calcium phosphate.
14. A measuring apparatus for measuring at least one of the concentration, pH, anaerobic degree and microbial activity of digested sludge in the apparatus for performing anaerobic digestion, and a measurement result of the measuring apparatus. 14. The apparatus according to any one of claims 10 to 13, further comprising a controller that controls the dispersion processing or the reforming processing in response.
15. The solids concentration of the inflowing organic wastewater, and measuring device for measuring at least one of pH and anaerobic degree, the dispersion process or the modification in accordance with the measurement result of the measuring device The apparatus according to claim 10, further comprising: a controller that controls a process.
16. In the above distributed processing or the modification treatment, organic waste to be treated, digested sludge or the concentrated sludge or organic sludge, for a mixture of the digested sludge or the concentrated sludge, organic matter concentration, solids concentration , pH, claim comprises a measuring device for measuring at least one of anaerobic degree or activity, and a controller, wherein the controlling the distributed processing or the modification process in accordance with the measurement result of the measuring device 10 to 15 An apparatus according to any one of the above.
17. Organic waste liquid after the modification treatment, digested sludge or the concentrated sludge or organic sludge, based on the mixture of digested sludge or the concentrated sludge or organic waste liquid after the modification treatment, digested sludge or the concentrated sludge or organic sludge, a measuring means for measuring the phosphorus concentration to a solution which had been separated from the mixture of digested sludge or the concentrated sludge, the dispersion according to the measurement result of the measuring means 17. The method according to any of claims 11 to 16, comprising a controller for controlling a process or the reforming process.
18. Organic waste liquid after the modification treatment, digested sludge or the concentrated sludge or organic sludge, based on the mixture of digested sludge or the concentrated sludge or organic waste liquid after the modification treatment, digested sludge or the concentrated sludge or organic sludge, a measuring means for measuring the phosphorus concentration to a solution which had been separated from the mixture of digested sludge or the concentrated sludge, the phosphorus recovery device according to the measurement result of the measuring means The apparatus according to any one of claims 11 to 17, further comprising a controller for controlling operation.