200848149 九、發明說明 【發明所屬之技術領域】 本發明關於適用於煤炭焚燒、原油焚燒及重油焚燒等 的發電廠之排煙脫硫裝置的排廢水處理，特別關於從使用 海水法進行脫硫之排煙脫硫裝置的排廢水除去氣泡之氣泡 回收裝置及氣泡回收系統。 【先前技術】 以往，在以煤炭或原油等爲燃料之發電廠，由鍋爐所 排出的燃燒排廢氣（以下稱爲鍋爐排廢氣），在除去含於 鍋爐排廢氣中之二氧化硫（so2)等的硫氧化物（sox)後 再釋放至大氣中。作爲實施這樣的脫硫處理的排煙脫硫裝 置之脫硫方式，石灰石石膏法、噴霧乾燥法及海水法爲眾 所皆知。 在這些方法中，採用海水法的排煙脫硫裝置（以下稱 爲海水脫硫裝置）是使用海水作爲吸收劑之脫硫方式。在 此方式，藉由對將例如大致呈圓筒的圓筒狀做成縱向配置 之脫硫塔（吸收塔）的內部，供給海水及鍋爐排廢氣，藉 此以海水作爲吸收液，產生濕式基座的氣液接觸，除去硫 氧化物。 在上述的海水脫硫裝置，通常的情況，在脫硫塔內作 爲吸收劑所使用過後的使用過海水，例如圖2所示，流經 水路（Sea Water Treatment System; SWTS) 1 內進行排 水之際，藉由從設置於水路1的底面之曝氣噴嘴2使氣泡 -5- 200848149 3流出之曝氣，進行脫碳酸（曝氣）處理。 藉由上述的脫碳酸，進行PH値的調整之際’受到細 微的曝氣氣泡3、在脫硫塔內被取入至海水中的鍋爐排廢 氣中之成分（媒塵等）、及含於海水中的有機物等的相互 作用，在流經於水路1內的使用過海水的水面上，會產生 大量的氣泡。此氣泡4不僅不容易消失，且亦含有有害物 質，所以，直接由水路1與海水一同釋出周圍的海域時， 有礙景觀且會污染環境，並不理想。 作爲水面上的氣泡除去之類似或關連的以往技術，回 收浮游於水面上的油物用之油物回收裝置爲眾所皆知。此 油物回收裝置具備有：浮游於水面上用以支承油物回收裝 置的浮選手段、油物的吸引手段、及用來從集油口收集油 物並導引至吸引手段之集油手段（參照例如專利文獻1 ) 〇 又，作爲可圓滑地回收浮游於回收槽之塗佈淤渣的裝 置，提案有淤渣等的回收裝置（參照例如專利文獻2 )。 [專利文獻1]日本特開2004-3 5 1 279號公報（參照圖1 等） [專利文獻2]日本特開平6-2969 1 1號公報（參照圖1 等） 【發明內容】 〔發明所欲解決之課題〕 然而’流經於上述水路1內而被排放至周邊海域之脫 200848149 硫後的使用過海水，浮游於上面之氣泡4會成爲景觀惡化 或環境污染之原因。因此，爲了解決這種問題，需要由海 水適當地分離除去水面上的氣泡4並加以回收之裝置。即 ，被期望開發出，能夠適當地分離除去浮游於脫硫後的使 用過海水面上之氣泡4並加以回收，僅將不具有氣泡4之 使用過海水排放至周邊海域的氣泡回收裝置及具備此氣泡 回收裝置之氣泡回收系統。 本發明是有鑑於上述情事而開發完成之發明，其目的 在於提供，可回收浮游於脫硫後的使用過海水面上的氣泡 ，僅將除去了氣泡之使用過海水排放至周邊海域的氣泡回 收裝置及具備此氣泡回收裝置之氣泡回收系統。 〔用以解決課題之手段〕 本發明爲了解決上述課題，而採用以下的手段。 本發明之氣泡回收裝置，是設置於供從使用海水作爲 吸收劑之排煙脫硫裝置的脫硫塔排放的使用過海水流動並 加以排放的水路，將浮游於前述使用過海水的水面之氣泡 予以分離除去並回收之氣泡回收裝置，其特徵爲：裝置全 體爲保持於在前述水路內浮起的狀態之浮體構造，在該浮 體構造設有：從海水分離除去浮游於水面上的氣泡之氣泡 杓部；及用來回收以氣泡杓部所分離除去之氣泡的儲藏凹 部。 若根據這樣的氣泡回收裝置的話，因裝置全體爲保持 於在前述水路內浮起的狀態之浮體構造，在該浮體構造設 200848149 有：從海水分離除去浮游於水面上的氣泡之氣泡杓部；及 用來回收以氣泡杓部所分離除去之氣泡的儲藏凹部，所以 ，即使流經於水路內的使用過海水之水位產生變動，也能 藉由浮力，將氣泡杓部常時保持於水面上的大致相同位置 。因此，藉由將氣泡杓部保持於氣泡與水面之境界位置， 氣泡杓部可從使用過海水確實地分離氣泡，並回收至儲藏 凹部。 本發明的氣泡回收系統，是具備有氣泡回收裝置之系 統，該氣泡回收裝置是設置於供從使用海水作爲吸收劑之 排煙脫硫裝置的脫硫塔排放的使用過海水流動並加以排放 的水路，將浮游於前述使用過海水的水面之氣泡予以分離 除去並回收，其特徵爲：具備有：氣泡回收裝置，其裝置 全體爲保持於在前述水路內浮起的狀態之浮體構造，在該 浮體構造設有從海水分離除去浮游於水面上的氣泡之氣泡 杓部；及用來回收以氣泡杓部所分離除去之氣泡的儲藏凹 部；將所回收的氣泡進行脫水乾燥之氣泡處理裝置；及由 前述儲藏凹部，吸引所回收之氣泡，搬送至前述氣泡處理 裝置之吸引搬送裝置。 若根據這樣的氣泡回收系統的話，因其結構爲具備有 :氣泡回收裝置，其裝置全體爲保持於在水路內浮起的狀 態之浮體構造，在該浮體構造設有從海水分離除去浮游於 水面上的氣泡之氣泡杓部；及用來回收以氣泡杓部所分離 除去之氣泡的儲藏凹部；將所回收的氣泡進行脫水乾燥之 氣泡處理裝置；及由儲藏凹部，吸引所回收之氣泡，搬送 -8 - 200848149 至氣泡處理裝置之吸引搬送裝置，所以，利用以浮力將氣 泡杓部保持於氣泡與水面之境界位置，氣泡杓部可從使用 過海水確實地分離氣泡，並回收至儲藏凹部。回收至儲藏 凹部之氣泡在藉由吸引搬送裝置搬送至氣泡處理裝置後， 進行脫水乾燥並分離成氣泡成分與海水成分。 〔發明效果〕 若根據上述本發明的話，因可回收浮游於脫硫後的使 用過海水面上的氣泡，僅將除去了氣泡之使用過海水排放 至周邊海域，所以，可有效地解決浮游於水面上的氣泡造 成景觀惡化的問題或環境受到污染的問題。 【實施方式】 以下，根據圖面，說明關於本發明之氣泡回收裝置及 氣泡回收系統的一實施形態。 在圖1所示的氣泡回收系統1 0， 具備有：藉由設置 於供使用過海水流動且予以排放之水路（SWTS ) 1，將浮 游於使用過海水的水面之氣泡4予以分離除去並回收之氣 泡回收裝置20。此氣泡回收裝置20是做成裝置全體保持 於在水路1藉由浮力浮起的狀態之浮體構造，在圖式的結 構中，在流經於水路1內的使用過海水之流動方向（圖中 的箭號F )，上游側的前部浮子2 1與下由側的後部浮子 22連結成一體。再者，上述使用過海水是指例如從使用海 水作爲吸收劑之排煙脫硫裝置（海水脫硫裝置）的脫硫塔 -9- 200848149 所排放之脫硫後的海水。 氣泡回收裝置20的浮體構造，從海水將浮游水面上 的氣泡4予以分離除去之氣泡杓部23設置於前部浮子2 i ，用來回收在氣泡杓部2 3分離除去後的氣泡之儲藏凹部 24設置於前部浮子2 1與後部浮子22之間。 氣泡回收裝置2 0爲具有與水路1的寬度W大致相同 的寬度尺寸之浮體，爲了不會由水路1內的預定位置受到 水流所牽引而移動，在容許浮力之上下方向的移動之狀態 下被固定著。即，浮體構造之氣泡回收裝置20，以雖可進 行因應水路1內的水位變動之上下方向的移動，但不會朝 流經於水路1內的使用過海水之流動方向移動的方式，被 支承於預定位置。 氣泡杓部23是在使用過海水的流動方向，設置於氣 泡回收裝置20的上游側。此氣泡杓部23爲在浮體構造的 大致全寬度範圍，將前端23a的剖面形狀做成銳角之部分 ，前端23 a的高度方向位置設定成，大致與水面相同，或 較水面稍低之水中。 儲藏凹部2 4爲配合水路1的形狀，做成平面視角大 致呈矩形的氣泡儲藏空間。此儲藏凹部24藉由前部浮子 21與後部浮子22的壁面21a、22a，和連結前部浮子21 及後部浮子22的一對側壁24a、24b ’形成前後左右之壁 面，且藉由將這些前後左右的壁面下部連結並封住底面’ 形成上面開口之凹部空間。 氣泡回收系統1 〇是由於將回收至上述結構的氣泡回 -10- 200848149 收裝置20之儲藏凹部24的氣泡4進行搬送並處理，故’ 具備有搬送流路，該流路藉由前端配設於儲藏凹部2 4內 的配管1 1及介裝於配管1 1的適當部位之可撓性管1 2所 形成。在形成搬送流路之配管1 1的另一端側，連結著吸 引搬送裝置13，且在吸引搬送裝置13的吐出側設有氣泡 處理裝置1 4。 上述吸引搬送裝置1 3，是使用例如噴射泵浦或真空泵 浦等的泵浦。 又，氣泡處理裝置1 4，是使用將所回收的氣泡4進行 脫水處理並分離成氣泡成分與海水之離心分離器等。在此 ，所分離之海水被排放返回至周邊海域，針對氣泡成分則 進行乾燥處理做成固態物。再者，此固態物在設施內進行 再利用，或埋設處理。 即，氣泡回收系統1 0，除了氣泡回收裝置20外，並 藉由具備從儲藏凹部24吸引所回收的氣泡4並搬送至氣 泡處理裝置1 4之吸引搬送裝置1 3、及對回收至儲藏凹部 2 4的氣泡4進行脫水乾燥之氣泡處理裝置1 4的陸地上設 備所構成。 以下’針對上述結構的氣泡回收裝置20及氣泡回收 系統1 〇的作用，與氣泡的回收處理順序進行說明。 由脫硫塔所排放之脫硫後的使用過海水是在水路1內 朝箭號F方向流動。在流動於水路1的使用過海水之水面 上浮游有氣泡4，當此氣泡4到達氣泡回收裝置2〇時，氣 泡构邰2 3的則端2 3 a會進入至使用過海水與氣泡4之境 -11 - 200848149 界部分而予以分離。此時，由於氣泡回收裝置20爲浮體 構造，故，氣泡杓部23與使用過海水之位置關係，是不 受水面變動所影響，而被維持成大致一定。 其結果，因使用過海水沿著前部浮子2 1的下面被導 引’所以，通過氣泡回收裝置20的下方而流去。另外， 因氣泡4通過氣泡杓部23的上面流動，故，會落下至配 置於氣泡杓部23的下游側之儲藏凹部24內並被回收。 受到儲藏凹部24所回收的氣泡4是藉由使吸引搬送 裝置1 3運轉而吸引，通過配管1 1及可撓性管1 2，被搬送 至氣泡處理裝置1 4。再者，可撓性管1 2爲配管1 1可追隨 因應水面變動而上下移動之氣泡回收裝置20者。 如此被搬送至氣泡處理裝置1 4的氣泡4被分離成海 水與氣泡成分。分離後的海水在無氣泡4的狀態下排放至 周邊海域。另外，分離後的氣泡成分藉由乾燥處理而形成 爲固態物，在設施內進行再利用，或埋設處理於適當的場 所。 因此，從由脫硫塔被排放後而流經水路1並被排出之 使用過海水的水面上，適當地分離除去氣泡4並加以回收 ，僅將不具氣泡4之使用過海水排放至周邊海域，故能夠 解決因浮游於水面上的氣泡4所造成之景觀惡化或環境污 染的問題。 又，上述氣泡回收裝置20及氣泡回收系統1〇，亦可 針對每個排放使用過海水之脫硫塔進行設計，亦可設置於 將由複數個脫硫塔所排放的使用過海水匯集總括於1個水 -12- 200848149 路1之位置。 再者，本發明不限於上述實施形態，在不超出本發明 的技術思想範圍內可進行各種變更。 【圖式簡單說明】 圖1是顯示本發明之氣泡回收裝置及氣泡回收系統的 一實施形態之圖，（a )爲由側面觀看氣泡回收裝置之斷 面並加上陸地上設備的結構之圖，（b )爲顯示（a )的氣 泡回收裝置之平面圖。 圖2是顯不以往技術的側面圖。 【主要元件符號說明】 1 :水路（S WTS ) 4 :氣泡 1 0 :氣泡回收系統 13 :吸引搬送裝置 1 4 :氣泡處理裝置 2 〇 :氣泡回收裝置 2 1 :前部浮子 22 :後部浮子 23 :氣泡杓部 2 3 a :前端 24 :儲藏凹部 -13-200848149 IX. INSTRUCTIONS OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a wastewater discharge treatment for a flue gas desulfurization device of a power plant for coal incineration, crude oil incineration, and heavy oil incineration, and particularly relates to desulfurization from the use of seawater method A bubble recovery device for removing waste water from a waste water desulfurization device and a bubble recovery system. [Prior Art] In the power plant that uses coal or crude oil as fuel, the combustion exhaust gas (hereinafter referred to as boiler exhaust gas) discharged from the boiler removes sulfur dioxide (so2) contained in the exhaust gas of the boiler. Sulfur oxides (sox) are then released into the atmosphere. As a desulfurization method of a flue gas desulfurization apparatus for carrying out such desulfurization treatment, a limestone gypsum method, a spray drying method, and a seawater method are well known. Among these methods, a flue gas desulfurization apparatus using seawater method (hereinafter referred to as a seawater desulfurization apparatus) is a desulfurization method using seawater as an absorbent. In this way, seawater and boiler exhaust gas are supplied to the inside of a desulfurization tower (absorption tower) which is disposed in a longitudinal direction, for example, a substantially cylindrical shape, whereby seawater is used as an absorption liquid to generate a wet type. The gas-liquid contact of the susceptor removes sulfur oxides. In the above-described seawater desulfurization apparatus, in general, used seawater used as an absorbent in a desulfurization tower, for example, as shown in FIG. 2, flows through a waterway (SW Water) 1 for drainage. The decarbonation (aeration) treatment is performed by aeration of the bubble-5-200848149 3 from the aeration nozzle 2 provided on the bottom surface of the water path 1. By the above-described decarbonation, when the pH is adjusted, the components are received by the fine aeration bubbles 3, the exhaust gas from the boiler exhaust gas taken into the seawater in the desulfurization tower, and the like. The interaction of organic matter or the like in the seawater generates a large amount of bubbles on the surface of the water that has flowed through the seawater in the waterway 1. This bubble 4 is not only easy to disappear, but also contains harmful substances. Therefore, when the waterway 1 is directly released into the surrounding sea area together with the seawater, it is unfavorable because it hinders the landscape and pollutes the environment. As a similar or related prior art for bubble removal on the water surface, an oil recovery device for recovering oil floating on the water surface is well known. The oil recovery device includes: a flotation means for supporting the oil recovery device floating on the water surface, a suction means for the oil, and an oil collecting means for collecting the oil from the oil collection port and guiding the suction means (see, for example, Patent Document 1) As a device for smoothly collecting the coating sludge floating in the recovery tank, a recovery device such as sludge is proposed (see, for example, Patent Document 2). [Patent Document 1] Japanese Laid-Open Patent Publication No. 2004-3 5 No. 279 (see FIG. 1 and the like) [Patent Document 2] Japanese Laid-Open Patent Publication No. Hei 6-2969 No. 1 (see FIG. 1 and the like) Problem to be solved] However, the use of seawater after the 200848149 sulfur is discharged into the surrounding waters and discharged into the surrounding waters, and the bubbles 4 floating on the surface may cause deterioration of the landscape or environmental pollution. Therefore, in order to solve such a problem, it is necessary to appropriately separate and remove the air bubbles 4 on the water surface from the sea water and recover the device. In other words, it is expected to be able to appropriately separate and remove the bubbles 4 that have floated on the used sea surface after desulfurization and collect them, and to discharge only the used seawater without the bubbles 4 to the surrounding sea area. The bubble recovery system of this bubble recovery device. The present invention has been made in view of the above circumstances, and an object of the invention is to provide a bubble that can be recovered from floating seawater surface after desulfurization, and which only discharges used seawater from which bubbles have been removed to the surrounding sea area. A device and a bubble recovery system having the bubble recovery device. [Means for Solving the Problem] In order to solve the above problems, the present invention employs the following means. The bubble recovery device of the present invention is a water passage which is disposed in a desulfurization tower for discharging a desulfurization unit using seawater as an absorbent and which is discharged and used to discharge water bubbles floating on the surface of the seawater used above. A bubble recovery device for separating and recovering, characterized in that the entire device is a floating body structure held in a state of being floated in the water passage, and the floating body structure is provided with: separating and removing bubbles floating on the water surface from the seawater a bubble crotch portion; and a storage recess for recovering bubbles separated by the crotch portion of the bubble. In the case of the bubble recovery device, the entire structure of the device is a floating body structure that is held in the water channel. In the floating structure, 200848149 is provided: a bubble that separates and removes bubbles floating on the water surface from the seawater. And a storage recess for recovering the bubbles separated by the bubble crotch, so that even if the water level of the used seawater flowing through the water path fluctuates, the bubble crotch can be constantly maintained on the water surface by buoyancy The approximate position on the top. Therefore, by holding the bubble crotch portion at the boundary position between the bubble and the water surface, the bubble crotch portion can surely separate the bubble from the used seawater and collect it into the storage recess. The bubble recovery system of the present invention is a system including a bubble recovery device which is disposed in a used seawater discharged from a desulfurization tower using a flue gas desulfurization device using seawater as an absorbent and discharged. In the waterway, the air bubbles that have been floated on the water surface of the seawater are separated and recovered, and are characterized in that: the bubble recovery device is provided, and the entire device is a floating body structure that is held in the water channel. The floating body structure is provided with a bubble crotch portion for separating and removing bubbles floating on the water surface from seawater; and a storage concave portion for recovering bubbles separated by the bubble crotch portion; and a bubble treatment device for dehydrating and drying the recovered bubbles And sucking the collected air bubbles from the storage recesses and transporting them to the suction transport device of the bubble processing device. According to such a bubble recovery system, the structure is provided with a bubble recovery device, and the entire device is a floating body structure that is held in a state of floating in a waterway, and the floating structure is provided with separation and removal of water from the seawater. a bubble crotch portion of a bubble on the surface of the water; and a storage recess for recovering the bubble separated by the bubble crotch; a bubble treatment device for dehydrating and drying the recovered bubble; and suctioning the recovered bubble by the storage recess , -8 - 200848149 The suction conveying device to the bubble processing device, so that the bubble crotch portion is held at the boundary position between the bubble and the water surface by buoyancy, and the bubble crotch portion can be surely separated from the used seawater and recovered to the storage. Concave. The bubbles collected in the storage recess are transported to the bubble processing device by the suction transfer device, and then dehydrated and separated to separate into a bubble component and a seawater component. [Effect of the Invention] According to the present invention, since the bubbles that have been floated on the used sea surface after desulfurization can be recovered, only the used seawater from which the bubbles are removed is discharged to the surrounding sea area, so that the floating can be effectively solved. Air bubbles on the water surface cause problems of landscape deterioration or environmental pollution. [Embodiment] Hereinafter, an embodiment of a bubble collecting device and a bubble collecting system according to the present invention will be described based on the drawings. The bubble recovery system 10 shown in FIG. 1 is provided with a bubble 4 that is floated on the surface of the sea surface that has been used for seawater, and is removed and recovered by a water passage (SWTS) 1 that is disposed to be used for flowing seawater. Bubble recovery device 20. The bubble recovery device 20 is a floating body structure in which the entire device is held in a state in which the water passage 1 is floated by buoyancy, and in the configuration of the drawing, the flow direction of the used seawater flowing through the water passage 1 (Fig. In the middle arrow F), the front side float 2 1 and the lower side rear side float 22 are integrally connected. Further, the above-mentioned use of seawater means, for example, seawater after desulfurization discharged from a desulfurization tower -9-200848149 of a flue gas desulfurization apparatus (seawater desulfurization apparatus) using sea water as an absorbent. In the floating structure of the bubble recovery device 20, the bubble crotch portion 23 which separates and removes the air bubbles 4 on the floating water surface from the seawater is provided in the front float 2i for collecting the storage of the air bubbles separated and removed in the bubble crotch portion 23 The recess 24 is provided between the front float 21 and the rear float 22. The bubble recovery device 20 is a floating body having a width dimension substantially the same as the width W of the water passage 1, and is moved in a downward direction in order to prevent the buoyancy from being moved by the water flow in a predetermined position in the water passage 1 It is fixed. In other words, the bubble recovery device 20 of the floating body structure can move in the upward direction of the water level fluctuation in the water passage 1, but does not move in the flow direction of the used seawater flowing through the water passage 1. Supported at a predetermined position. The bubble crotch portion 23 is provided on the upstream side of the bubble recovery device 20 in the flow direction of the used seawater. The bubble crotch portion 23 is a portion having a substantially full width range of the floating body structure, and the cross-sectional shape of the distal end 23a is an acute angle, and the height direction of the distal end 23a is set to be substantially the same as the water surface or slightly lower than the water surface. . The storage recessed portion 24 is a shape in which the water passage 1 is fitted, and is formed into a rectangular bubble storage space having a flat viewing angle. The storage recess 24 is formed by the wall surfaces 21a and 22a of the front float 21 and the rear float 22, and the pair of side walls 24a, 24b' connecting the front float 21 and the rear float 22 to form front, rear, left and right wall surfaces, and The lower left and right wall surfaces join and seal the bottom surface to form a recessed space in the upper opening. In the bubble recovery system 1 , the air bubbles 4 collected in the storage recess 24 of the receiving device 20 are transported and processed, so that there is a transport flow path, and the flow path is provided by the front end. The pipe 1 1 in the storage recess 24 and the flexible pipe 1 2 interposed in a suitable portion of the pipe 1 1 are formed. The other end side of the pipe 1 1 where the conveying flow path is formed is connected to the suction conveying device 13, and the bubble processing device 14 is provided on the discharge side of the suction conveying device 13. The suction transporting device 13 is a pump using, for example, jet pumping or vacuum pumping. Further, the bubble processing device 14 is a centrifugal separator that dehydrates the collected bubbles 4 and separates them into a bubble component and seawater. Here, the separated seawater is discharged back to the surrounding sea area, and the bubble component is dried to form a solid matter. Furthermore, the solid material is reused or buried in the facility. In other words, the bubble recovery system 10 includes the suction and collection device 13 that is transported to the bubble processing device 14 by the bubble 4 collected from the storage recess 24, and is collected and stored in the storage recess. The bubble 4 of 24 is composed of a land-based device of the bubble processing device 14 which is dehydrated and dried. The following description of the operation of the bubble recovery device 20 and the bubble recovery system 1 of the above configuration and the bubble recovery process will be described. The used seawater after desulfurization discharged from the desulfurization tower flows in the water path 1 in the direction of the arrow F. The bubble 4 floats on the surface of the seawater flowing over the waterway 1 and when the bubble 4 reaches the bubble recovery device 2, the end 2 3 a of the bubble structure 2 3 enters the used seawater and the bubble 4 Separation of the borders - 200848149 sector. At this time, since the bubble collecting device 20 has a floating body structure, the positional relationship between the bubble crotch portion 23 and the used seawater is maintained to be substantially constant without being affected by the fluctuation of the water surface. As a result, the used seawater is guided along the lower surface of the front float 21, so that it flows through the lower side of the bubble collecting device 20. Further, since the air bubbles 4 flow through the upper surface of the bubble crotch portion 23, they fall into the storage recess 24 disposed on the downstream side of the bubble crotch portion 23 and are recovered. The air bubbles 4 collected by the storage recess 24 are sucked by the operation of the suction conveyance device 13 and are conveyed to the bubble processing device 14 through the pipe 1 1 and the flexible tube 1 2 . Further, the flexible tube 12 is a bubble collecting device 20 in which the pipe 1 1 can follow the movement of the water surface up and down. The bubbles 4 thus transported to the bubble processing device 14 are separated into seawater and bubble components. The separated seawater is discharged to the surrounding sea area without bubbles 4. Further, the separated bubble component is formed into a solid by drying treatment, reused in the facility, or embedded in an appropriate facility. Therefore, from the water surface of the used seawater which is discharged from the desulfurization tower and flows through the waterway 1 and is discharged, the bubbles 4 are appropriately separated and recovered, and only the used seawater without the bubble 4 is discharged to the surrounding sea area. Therefore, it is possible to solve the problem of landscape deterioration or environmental pollution caused by the bubbles 4 floating on the water surface. Further, the bubble recovery device 20 and the bubble recovery system 1 may be designed for each desulfurization tower that uses seawater, or may be installed in a collection of used seawater discharged from a plurality of desulfurization towers.水水-12- 200848149 Road 1 location. The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an embodiment of a bubble recovery device and a bubble recovery system according to the present invention, wherein (a) is a view showing a cross section of a bubble recovery device from a side view and a structure of a device on land. (b) is a plan view showing the bubble recovery device of (a). Fig. 2 is a side view showing a prior art. [Description of main component symbols] 1 : Water path (S WTS ) 4 : Bubble 1 0 : Bubble recovery system 13 : Suction conveying device 1 4 : Bubble processing device 2 〇 : Bubble recovery device 2 1 : Front float 22 : Rear float 23 : bubble crotch 2 3 a : front end 24: storage recess 13-