SLUDGE TREATMENT APPARATUS AND SLUDGE TREATMENT METHOD

• Main Authors: ARIMA YOSHIAKI, WAKAMURA OSAMU, HIRASHIKI ISAMU, FURUKAWA SEIJI, USUI HAJIME, OIZUMI MASANOBU, OBARA SHINTARO, TOKIMORI KOUICHI, KUROKI HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 15.11.2018
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To provide a sludge treatment apparatus capable of obtaining sludge bubbles which have been made large in diameter and are easy to separate into gas and liquid.SOLUTION: A sludge treatment apparatus 100 is provided with a sludge bubble coupling section 5 in a flow path of a sludge bubble transfer pipe 2 for transferring sludge bubbles 4 formed by foaming sludge-containing liquid 6 with ozone gas 8. The sludge bubble coupling section 5 is provided with a piping restricting portion 52 to be a narrow flow path. When the sludge bubbles 4 pass through the piping restricting portion 52, a plurality of sludge bubbles 4 are joined, and it is possible to obtain sludge bubbles 4b which have been made large in diameter. The enlarged sludge bubbles 4b have the property that the thickness of the liquid film liquid is uneven and easily breaks. The enlarged sludge bubbles 4b naturally break at the stage of being discharged from the sludge bubble transfer pipe 2 to the gas phase inside a reformed sludge separation tank 3 and are separated into reformed sludge 12 and exhaust gas 13.SELECTED DRAWING: Figure 2 【課題】気液分離しやすい大径化された汚泥泡を得ることが可能な汚泥処理装置を提供する。【解決手段】汚泥処理装置１００は、汚泥含有液６をオゾンガス８で発泡させてなる汚泥泡４を移送する汚泥泡移送配管２の流路に、汚泥泡結合部５を備えている。この汚泥泡結合部５には、狭流路となる配管絞り部５２が設けられており、この配管絞り部５２を汚泥泡４が通過することで、複数の汚泥泡４が結合され、大径化された汚泥泡４ｂを得ることができる。大径化された汚泥泡４ｂは、液膜液の厚さが不均一で破泡しやすいという性質を持っている。大径化された汚泥泡４ｂは、汚泥泡移送配管２から改質汚泥分離槽３内部の気相に放出された段階で、自然に破泡し、改質汚泥１２と排ガス１３とに気液分離される。【選択図】図２