OPERATING METHOD OF BIOLOGICAL TREATMENT SYSTEM

• Main Authors: MATSUTOMO SHINJI, UWAKAWA SATOSHI, TSUBOUCHI RIE
• Format: Patent
• Language: English; Japanese
• Published: 21.01.2022
• Subjects: CHEMISTRY; METALLURGY; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

To provide an operating method of a biological treatment system which can advance reversion of biological activity after a restart of operation and suppress decline in treatment performance.SOLUTION: An operating method of a biological treatment system 1 which biologically treats water to be treated including ammonia nitrogen using a useful living organism to produce treated water comprises a step of controlling a living organism environment by growth environment retaining means for retaining a growth environment of the useful living organism while operation of the biological treatment system 1 is suspended. The growth environment retaining means comprises: nutrient substrate retaining means 21 to retain a nutrient source of the useful living organism; and oxygen supply means L2 to supply oxygen to the useful living organism.SELECTED DRAWING: Figure 1 【課題】運転再開後における生物活性の復帰を早くし、処理性能の低下を抑制することが可能な生物処理システムの運転方法を提供する。【解決手段】アンモニア態窒素を含む被処理水を、有用生物を用いて生物処理して処理水を生成する生物処理システム１の運転方法であって、生物処理システム１の運転休止中において、有用生物の生育環境を保持するための生育環境保持手段によって、生物環境を制御するステップを含み、生育環境保持手段は、有用生物の栄養源を保持する栄養基質保持手段２１と、有用生物に対して酸素を供給する酸素供給手段Ｌ２と、を備える。【選択図】図１