JPS59233047A - Sewage treating method and apparatus utilizing elongated space such as walking road or street tree zone - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は、歩道、街路樹帯下等細長い空間を利用した汚
水処理方法及びその装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sewage treatment method and apparatus that utilize elongated spaces such as sidewalks and under street trees.

生活下水道とは、工場排水、雨水の排除を別系４− 統に分離した生活系排水の専用下水道であって、一般に
は大規模市街地の下水道をさすが、その場合世界総ての
下水道に共通している発想は、排水管路、揚水ポンプ工
場および処理場の三つの装置を組合せたものであり、そ
の建設費と維持管理費はぼう犬になる。Domestic sewage system refers to a dedicated sewage system for domestic sewage that separates industrial effluent and rainwater into four separate systems, and generally refers to sewage systems in large urban areas, but in this case, it is common to all sewage systems in the world. The idea is to combine three types of equipment: a drainage pipe, a water pump factory, and a treatment plant, and the construction and maintenance costs will be low.

一方、農村集落は、交通幹線道路と交差する生活小道路
を中心として住宅が分散配置した形態であるが、農村の
都市化に伴って、生活系排水を含めた汚水処理施設の建
設が急務となっている。しかし、従来の下水処理工法で
は、生活小道路或いは交通幹線道路の中央に深く排水管
、即ち生活下水道を設置する方法をとるため、重量物の
運搬等への対応か呟道路が大になる程、排水管が深くな
り、その建設費や維持管理費が非常に高くなり、特に農
村集落のように人口密度が小さいところは全下水道シス
テム建設費の８０％以」二が道路下に設ける大幹線排水
管路に費やされなど、地方自治体の財政を圧迫するとい
う問題があった。On the other hand, in rural villages, houses are scattered around residential roads that intersect with main transportation roads, but with the urbanization of rural villages, there is an urgent need to construct sewage treatment facilities, including domestic wastewater. It has become. However, in the conventional sewage treatment method, drainage pipes, that is, domestic sewage pipes, are installed deeply in the center of residential roads or main transportation roads. As drainage pipes become deeper, their construction and maintenance costs become extremely high, especially in areas with small population densities such as rural villages, which account for 80% of the total sewerage system construction cost. There was a problem in that the money was being spent on drainage pipes, putting pressure on local governments' finances.

本発明は、」二記従米技術の有する問題に鑑みて５− なされたもので、悪臭、スカムの発生がなく、しかも余
剰汚泥なｊ酸量で外る土壌式嫌気性固定生物膜法と土壌
式礫間酸化法（特許第１．０３８６９４号）に勾配の小
さい自然流下が可能な湛水流水法に着目することにより
、歩道、街路樹帯下等細長い空間を利用した排水管路中
で汚水の高級処理を同時に行える構造とすると共に、天
外な水面勾配を必要としない湛水条件下での流下方式に
よＩ）長い排水路でもポンプ揚水工場を必要とせずに、
流れて行く途中で浄化されながら所要の地点で排出すれ
ば下水道システムとしての目的を果せるようにしたもの
である。The present invention has been made in view of the problems of the conventional technology described in Section 2, and uses a soil-type anaerobic fixed biofilm method that does not generate bad odor or scum, and can be removed by the amount of acid in excess sludge. By focusing on the gravel oxidation method (Patent No. 1.038694) and the impounding water flow method that allows natural flow with a small gradient, sewage can be removed in drainage pipes that utilize long and narrow spaces such as sidewalks and under street trees. In addition to having a structure that can simultaneously perform high-grade treatment of
The system is designed to fulfill its purpose as a sewage system by purifying the water as it flows and discharging it at the required point.

即ち、本発明は、幹線道路の歩道ないし街路樹帯下に埋
設した土壌式礫開接触酸化処理機能を有する排水管兼用
浄化槽に汚水を供給し、この汚水を土壌動物或いは微生
物により分解、浄化すると共に、水分を毛管現象によっ
て蒸発散又は土壌中に浸透させて、歩道、街路樹帯下等
細長い空間を利用するようにしたことを基本とするもの
である。That is, the present invention supplies sewage to a septic tank that also serves as a drainage pipe and has a soil-type gravel contact oxidation treatment function, which is buried under the sidewalk or roadside trees of a main road, and decomposes and purifies this sewage using soil animals or microorganisms. At the same time, the basic idea is to allow moisture to evaporate or permeate into the soil through capillary action, thereby making use of elongated spaces such as sidewalks and under street trees.

以下、本発明を図面と共に説明すれば、第１．２−６＝ 図において、１は生活小道路であり、その両側に住宅２
が分散配置されて農村集落を形成している。Hereinafter, the present invention will be explained with reference to the drawings. No. 1.2-6 = In the drawing, 1 is a residential road, and there are two residential buildings on both sides of the road.
are scattered and arranged to form rural villages.

この集落の汚水は通常の排水管網３により土壌式嫌気性
固定生物膜法を取り入れた沈澱槽４に運搬される。The sewage from this village is conveyed through an ordinary drainage pipe network 3 to a settling tank 4 that incorporates a soil-type anaerobic fixed biofilm method.

この沈）毀槽４は、生活小道路１と国道、県道等の広域
道路即ち幹線道路５との交差点の近傍に即設する。This sink tank 4 is immediately installed near the intersection of the residential road 1 and a wide area road such as a national highway or prefectural road, that is, a main road 5.

６は幹線道路５の歩道、７は緑樹帯であり、これらの下
面又はのり面に土壌式礫間接触酸化法を取り入れた長水
路の排水管兼用浄化槽８を設け、該浄化槽８と平行して
余剰汚泥液肥処理（・１Ｉ９９を設ける。6 is a sidewalk of the main road 5, and 7 is a green tree belt. A long channel drainage pipe-cum-septic tank 8 that incorporates the soil-type gravel contact oxidation method is installed on the bottom or slope of these, and in parallel with the septic tank 8. Excess sludge liquid fertilizer treatment (・1I99 is provided.

１０は側溝で、成る一定の水深を有し湛水流下条件を構
成するセキ又は落差工を形成するものであり、１１はコ
ンクリートブロック境界１票である。Reference numeral 10 indicates a side ditch, which forms a ditch or drop structure that has a certain water depth and constitutes flooded water flow conditions, and 11 indicates a concrete block boundary.

沈澱槽４は、下半部を汚水の固形分離槽、上半部をロス
ドルを介して適宜粒度の礫、空缶等の接触濾材を充填し
その上に土壌を被覆した構造とし、固形分（汚泥）が沈
）殿分離された後の汚水部分が該７− 接触濾材に付着した嫌気性固定生物膜により有機物が還
元分解するようにする。The sedimentation tank 4 has a structure in which the lower half is a solid separation tank for sewage, and the upper half is filled with contact filter media such as gravel of appropriate particle size and empty cans via a Rosdol, and covered with soil. After the sludge (sludge) has been precipitated and separated, organic matter is reduced and decomposed by the anaerobic fixed biofilm attached to the contact filter medium.

排水管兼用浄化槽８は、樋状、即ち長水路形をしたコン
クリート、プラスチック等の不透水槽８ａに礫、空缶等
よりなる固定生物膜（接触酸化）ｌｉｔ：材１３を充填
し、土砂の落下を防止する山形の網１４を介して被覆土
壌１５を被せると共に、固定生物膜濾材１３の底部に多
孔管１２を配設し、肢管１２から水又は空気を圧送して
、固定生物膜濾材１３の目詰りの防止や好気性菌を活発
化で終るようにする。The septic tank 8 that also serves as a drainage pipe is a gutter-shaped, long channel-shaped impermeable tank 8a made of concrete, plastic, etc., filled with a fixed biological film (catalytic oxidation) lit material 13 made of gravel, empty cans, etc. Covering soil 15 is covered with a mountain-shaped net 14 to prevent falling, and porous pipes 12 are arranged at the bottom of the fixed biofilm filter medium 13, and water or air is pumped through the limb pipes 12 to form the fixed biofilm filter medium. 13 to prevent clogging and activate aerobic bacteria.

余剰汚泥液肥処理槽９も排水管兼用浄化槽８とほぼ同様
の構造を有し該浄化槽８および処理槽９は導管４ａ＋４
１）により沈澱槽４に接続されでいる。なお、この余剰
汚泥液肥処理槽９は場合により省くことができる。The surplus sludge liquid fertilizer treatment tank 9 has almost the same structure as the septic tank 8 which also serves as a drain pipe, and the septic tank 8 and the treatment tank 9 are connected to the conduit 4a+4.
1) is connected to the settling tank 4. Note that this surplus sludge liquid fertilizer treatment tank 9 can be omitted depending on the case.

而して、本発明において最も重要な設計上の配慮は、排
水管兼用浄化槽８をでとるだけ浅い構造とし、酸素（例
えば最高の条件で１日１ｍ２当り７ｇ）が地表面から被
覆土壌１５を通じて汚水中に自然８− に供給されるようにする点にある。従って、被覆土壌の
構造は保水性態」二にその通気性が要求される反面、公
道下であるから悪臭公害などが決して発生しない条件を
満す必要がある。これらの条件は、現地の諸条件、例え
ば歩道の透水性、通気性、土壌、気候、植生などに応し
て実験的に定めることがでとる。また、固定生物膜濾材
１３に使用する礫などは、生物膜や固型物によって目詰
りが起り難い粒径で通常１０ｃ＋ｎ前後が適当であるが
、長水路方式であるため、通常の固定生物膜工法よりも
汚泥の剥離を考慮して上記多孔９ｙ１２を設けである。Therefore, the most important design consideration in the present invention is to make the septic tank 8 that also serves as a drain pipe as shallow as possible so that oxygen (for example, 7 g per 1 m2 per day under the best conditions) can be absorbed from the ground surface through the covering soil 15. The point is to ensure that natural 8- is supplied to the wastewater. Therefore, while the structure of the covering soil is required to have water retention and breathability, it is also necessary to satisfy the conditions that no foul odor or pollution will occur because it is located under a public road. These conditions can be determined experimentally depending on local conditions, such as the water permeability of the sidewalk, air permeability, soil, climate, and vegetation. In addition, the particle size of the gravel used for the fixed biofilm filter 13 is usually around 10c+n, as it is unlikely to be clogged by biofilm or solid matter. The above-mentioned holes 9y12 were provided in consideration of sludge removal rather than the construction method.

排水管兼用浄化槽８は礫層内の流水抵抗によって側溝１
０の落差工を決定し、かつ排水管兼用浄化槽８における
水深Ｗが決まるのであるが、数十分の−の勾配で設計し
得るのが本発明の特徴であり、通常の場合の排水管勾配
の１／１ｏ程度である。The septic tank 8 that also serves as a drainage pipe is connected to the side ditch 1 due to water resistance within the gravel layer.
0 is determined, and the water depth W in the drainage pipe-cum-septic tank 8 is also determined.The feature of the present invention is that it can be designed with a slope of several tens of minutes, and the slope of the drain pipe in the normal case is It is about 1/1o.

従って、長水路となってもポンプ揚水を必要とせず、自
然流下で汚水を排出することができる。Therefore, even if the water channel is long, there is no need for pumping, and wastewater can be discharged by gravity.

本発明による浄化能力は、通常日本の農村集落９− 間の鉗離を１０００ｍ、歩道中１ｍ、水深３０ｃｍと仮
定すれば３００＋ｎ３の固定生物膜浄化装置となり、集
落平均人口４００人、固液分離後のｌ’３０Ｄ負荷４０
ｇ／人・日であるか呟この歩道下の装置に負荷される総
ＢｏＤＨは１６ｋｇ／日で、固定生物膜濾材１ｍ２当り
０　、０５　ｋＨ／ｍ３・日のＢＯＤ負荷となり、地面
からの最大酸素供給能７ｋＨとほぼつり合うので、強制
的に酸素を供給しなくとも半好気性固定生物膜処理が可
能となる。このような平均的な設計条件であれば、処理
水質はＢＯＤ　６０ｐｐｌｎ以下となり、日本の浄化槽
放流水質基準にもほぼ合格するものとなる。The purification capacity of the present invention is based on the assumption that the separation between Japanese rural villages is 1000 m, the sidewalk is 1 m, and the water depth is 30 cm, resulting in a fixed biofilm purification device of 300 + n3, with an average population of 400 people, and after solid-liquid separation. l'30D load 40
g/person/day The total BoDH loaded on this device under the sidewalk is 16 kg/day, resulting in a BOD load of 0.05 kHz/m3/day per m2 of fixed biofilm filter media, and the maximum oxygen from the ground. Since it is almost balanced with the supply capacity of 7 kHz, semi-aerobic fixed biofilm treatment is possible without forcibly supplying oxygen. Under these average design conditions, the treated water quality will be BOD 60 ppl or less, which will almost pass the Japanese septic tank discharge water quality standards.

一方、余剰汚泥液肥処理槽９は、年に２〜３回程度沈澱
槽４がら沈澱汚泥を図示しないポンプで礫層内に流し込
み、網１６の四部を槽の底部に至るまで傾斜を設けた構
造としておくことにより、汚泥中の水分は毛管現象によ
って蒸発散又は液肥処理され、固型物は土壌動物、微生
物集団によって分解され、緑樹、芝生等の栄養に転化さ
れる。On the other hand, the surplus sludge liquid fertilizer treatment tank 9 has a structure in which settled sludge is poured into the gravel layer from the settling tank 4 about two to three times a year using a pump (not shown), and the four parts of the net 16 are sloped down to the bottom of the tank. By leaving the sludge as a sludge, water in the sludge is evaporated or treated with liquid fertilizer through capillary action, and solid matter is decomposed by soil animals and microbial populations and converted into nutrients for green trees, lawns, etc.

この余剰汚泥液肥処理槽９の巾を仮に５０ｃｍと１０− し、前記と同様に計算すれば、１人当りの汚泥の処理面
積はほぼ１【ｎ２となり、厨芥の処理を丸めて完全にク
ローズド方式で余剰汚泥の処理が可能となる。従って、
例えば排水管兼用浄化槽８の流出光に２ｈａの休耕水田
を集団化して処理水を消（厩用水として利用し、エサ米
を生産すれば、集落４００人分の生活系汚水汚泥はデス
ボーザで処理し、台所で雑排水と混ぜて排出した生ゴミ
を含め、完全に土壌に還元又は農緑地への再利用が可能
となる。If the width of the surplus sludge liquid fertilizer treatment tank 9 is assumed to be 50 cm and calculated in the same way as above, the sludge treatment area per person will be approximately 1 [n2], which means that kitchen waste treatment will be rounded up and completely closed system. This makes it possible to treat excess sludge. Therefore,
For example, if a 2 hectare of fallow rice field is collected in the outflow of the septic tank 8 that also serves as a drainage pipe, and the treated water is used as stable water and used to produce feed rice, the domestic sewage sludge of 400 people in the village can be treated with Desboza. , it becomes possible to completely return to the soil or reuse in agricultural and green areas, including the kitchen waste mixed with gray water and discharged.

本発明は」１記したように従来の単なる汚水排出のため
の下水道を排水管兼用の浄化槽とするものであるから次
のような効果がある。As mentioned in 1., the present invention converts the conventional sewer system for simply discharging sewage into a septic tank that also serves as a drain pipe, and therefore has the following effects.

現在、下水道は都市から農村に普及するに従って建設費
も維持管理費もすばらしく高価となり、よほど発想の転
換を行なわないと自治体財政は破産すると指摘されてい
る。現在の単位で人口密度／ＩＯÅ以下の集落を自治体
全域について集中処理すると、１人当り１５０円以上の
建設費で維持管理費は脱窒、脱リンを要請されると１ｍ
３当り３０１１− ０円となる。しかし、本発明によれば、建設費は１／３
、維持管理費は１／１０と全く夢のような対応が可能と
なり、緑樹の生育も２〜３倍は堅く、省資源、省エネル
ギー政策にとって世界的規侯ですばらしい方法及び装置
を提供することができる。Currently, as sewage systems spread from cities to rural areas, construction costs and maintenance costs are becoming extremely expensive, and it has been pointed out that unless there is a major change in thinking, local government finances will go bankrupt. If we intensively treat villages with a population density of less than /IOÅ in current units for the entire municipality, the construction cost per person will be more than 150 yen, and the maintenance cost will be 1 m if denitrification and phosphorus removal are requested.
It becomes 3011-0 yen per 3. However, according to the present invention, the construction cost is 1/3
, maintenance costs are reduced to 1/10, which is like a dream, green trees can grow 2 to 3 times faster, and we can provide excellent methods and equipment that meet global standards for resource and energy conservation policies. can.

また、本発明は一１＝記の農村集落のみならず、大は砂
漠地帯の都市計画、小はカリホルニアの如と家庭の芝生
潅水にも、中国の自留地そ菜栽培にも応用され、特に装
置をコンクリート製とせず合成樹脂製とすることによっ
て建設費をいくらでも安価とする設計ちり能であり、更
に歩道下のみでなく採尿を含まない集落排水の集中管理
や農緑地への再利用の池、洪水時濁水を含まない汚濁河
川水を河川の高水敷土壌下で処理するとか、海水浴場や
養殖魚場に流入する汚濁水を海岸、湖岸の砂浜で浄化処
理するとか、湖沼対策として平水時流入汚濁水を湖岸の
山林傾斜地で処理する等、その応用範囲は極めて広い。In addition, the present invention can be applied not only to rural villages as described in 11, but also to urban planning in desert areas, to irrigation of home lawns as in California, and to vegetable cultivation in isolated areas in China. It is designed to be made of synthetic resin instead of concrete, making construction costs as low as possible, and it is also designed to centrally manage community wastewater that does not include urine collection, not only under sidewalks, but also to reuse ponds and floodwaters in agricultural green areas. For example, polluted river water that does not contain turbid water can be treated under the soil of a river's high water bed, or polluted water that flows into beaches or fish farms can be purified on the sandy beaches of beaches and lakes. The range of applications is extremely wide, such as treating polluted water on slopes of mountain forests along the shores of lakes.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明装置の一実施例を示す平面図、１２− 第２図は第１図のｎ−ｒｒ線断面図である。 １・・・生活小道路、２・・・住宅、３・・・排水管網
、４・・・沈）穀槽、５・・・幹線道路、６・・・歩道
、７・・・緑樹帯、８・・・ダ１″水管兼用浄化槽、９
・・・余剰汚泥液肥処理槽、１０・・・側溝、１３・・
・固定生物膜濾材、１４・・・網、１５・・・被覆土壌
。 特許出願人　新見　正　他２名 １３−FIG. 1 is a plan view showing one embodiment of the device of the present invention, and FIG. 12-2 is a sectional view taken along the line n-rr in FIG. 1. 1... Community road, 2... House, 3... Drainage pipe network, 4... Grain tank, 5... Main road, 6... Sidewalk, 7... Green belt , 8... da 1″ water pipe combined use septic tank, 9
...Excess sludge liquid fertilizer treatment tank, 10...Gutter, 13...
・Fixed biofilm filter material, 14...Net, 15...Covered soil. Patent applicant Tadashi Niimi and 2 others 13-

Claims (6)

【特許請求の範囲】[Claims] （１）幹線道路の歩道ないし街路樹帯下に埋設した土壌
式礫間接触酸化処理機能を有する排水管兼用浄化槽に汚
水を供給し、この汚水を土壌動物或いは微生物により分
解、浄化すると共に、水分を毛管現象によって蒸発散又
は土壌中に浸透させることを特徴とする歩道、街路樹帯
下等細長い空間を利用した汚水処理方法。(1) Sewage is supplied to a septic tank that also serves as a drainage pipe and has a soil-type gravel contact oxidation treatment function, which is buried under the sidewalk of the main road or under the roadside trees, and this sewage is decomposed and purified by soil animals or microorganisms, and the water is A sewage treatment method that utilizes elongated spaces such as sidewalks and roadside tree belts, characterized by evapotranspiration or infiltration into the soil by capillary action. （２）生活小道路を中心とした群落または集落を構成す
る住宅からの汚水を集水し、この集水した汚水を土壌式
嫌気性固定生物膜処理機能を有する沈澱槽に導入し、該
沈澱槽で固液分離した後、分離された汚水を前記生活小
道道と交差する幹線道路の歩道ないし街路樹帯下に埋設
された土壌式礫間接触酸化処理機能を有する排水管兼用
浄化槽に供給し、該浄化槽において前記汚水を土壌動物
或い一１＝ は微生物により分解、浄化させると共に、水分を毛管現
象によって蒸発散又は土壌中に浸透させることを特徴と
する歩道、街路樹帯下等細長い空間を利用した汚水処理
方法。(2) Collect sewage from communities around residential streets or houses that make up the village, introduce this collected sewage into a sedimentation tank with a soil-type anaerobic fixed biofilm treatment function, and After solid-liquid separation in the tank, the separated wastewater is supplied to a septic tank that also serves as a drainage pipe and has a soil-type gravel contact oxidation treatment function, which is buried under the sidewalk or roadside trees of the main road that intersects with the residential path. In the septic tank, the sewage is decomposed and purified by soil animals or microorganisms, and the water is evaporated or permeated into the soil by capillary action. A wastewater treatment method using （３）生活小道路を中心とした群落または集落を構成す
る住宅からの汚水を集水し、この集水した汚水を土壌式
嫌気性固定生物膜処理機能を有する沈）ＦｔＱ槽に導入
し、該沈澱槽で固液分離した後、分離された汚水を前記
生活道と交差する幹線道路の歩道ないし街路樹帯下に埋
設された土壌式礫間接触酸化処理機能を有する排水管兼
用浄化槽に供給する一方、前記性）殿槽で分離された汚
泥を該排水管兼用浄化槽と並設した余剰汚泥液肥処理槽
に供給し、該浄化Ｗｉおよび余剰汚泥液肥処理槽におい
て前記汚水および汚泥を土壌動物或いは微生物により分
解、浄化させると共に、水分を毛管現象によって蒸発散
又は土壌中に浸透させることを特徴とする歩道、街路拐
帯下等＃ｌｌ長い空間を利用した汚水処理方法。(3) Collecting sewage from houses that make up communities or villages centered on community roads, and introducing this collected sewage into an FtQ tank that has a soil-type anaerobic fixed biofilm treatment function, After solid-liquid separation in the settling tank, the separated wastewater is supplied to a septic tank that also serves as a drainage pipe and has a soil-type gravel contact oxidation treatment function, which is buried under the sidewalk or roadside tree belt of the main road that intersects with the residential road. On the other hand, the sludge separated in the septic tank is supplied to the surplus sludge liquid fertilizer treatment tank installed in parallel with the drainage pipe-cum-septic tank, and the sewage and sludge are treated in the purification Wi and surplus sludge liquid fertilizer treatment tank. A sewage treatment method that utilizes long spaces such as sidewalks and street lanes, which is characterized by decomposing and purifying water using microorganisms, and evaporating or permeating water into the soil through capillary action. （４）生活小道路と交差する幹線道路の歩道、街路２− 拐帯下等の細長い空間に沿って湛水条件下で自然流下す
るゆるやかな勾配で長水路式の排水管兼用浄化槽を設け
、該排水管兼用浄化槽は樋状の不透水槽に礫、空缶等よ
りなる固定生物膜濾材を充ｊ眞し、土砂の落下を防止す
る山形の網を介して土壌を被覆して構成したことを特徴
とする歩道、街路樹帯下等細長い空間を利用した汚水処
理装置。(4) Sidewalks on main roads that intersect with local roads, street 2 - Install septic tanks that double as long drainage pipes with gentle slopes that allow water to flow naturally under flooded conditions along elongated spaces such as under the streets. The septic tank that also serves as a drainage pipe is constructed by filling a gutter-like impermeable tank with fixed biofilm filter media made of gravel, empty cans, etc., and covering the soil with a mountain-shaped net to prevent sediment from falling. A sewage treatment system that utilizes long and narrow spaces such as sidewalks and under street trees. （５）生活小道路と幹線道路の交差点近傍に土壌式嫌気
性固定生物膜処理機能を有する沈澱槽を設け、該沈）穀
槽と前記生活小道路を中心とする住宅との間に汚水を集
水する排水管網を設け、更に前記幹道路の歩道、街路用
帯下等の細長い空間に沿って湛水条件下で自然流下する
ゆるやかな勾配で長水路式の排水管兼用浄化槽を設ける
と共に、前記法）穀槽で固液分離された汚水を排水管兼
用浄化槽に送液する手段を設け、該排水管兼用浄化槽は
樋状の不透水槽に礫、空缶等よりなる固定生物膜濾材を
充填し、土砂の落下を防止するＩＩＩ形の網を介して土
壌を被覆して構成したことを特徴とする歩道、街路？ｊ
ｌ帯下等細長い空間を利用した汚水処理装置。 ３−(5) A sedimentation tank with a soil-type anaerobic fixed biofilm treatment function will be installed near the intersection of the residential road and the main road, and sewage will be placed between the sedimentation tank and the residences centered on the residential road. A drainage pipe network will be installed to collect water, and a septic tank will be installed with a long channel type drainage pipe and a septic tank with a gentle slope that will flow naturally under flooded conditions along the long and narrow spaces such as the sidewalks and street belts of the main roads. , said method) A means is provided to send the wastewater separated into solid and liquid in the grain tank to a septic tank that also serves as a drain pipe, and the septic tank that also serves as a drain pipe is equipped with a trough-like impermeable tank and a fixed biofilm filter material made of gravel, empty cans, etc. A sidewalk or street that is characterized by being filled with soil and covered with soil through a III-shaped net that prevents the fall of earth and sand. j
A sewage treatment device that utilizes a long and narrow space such as a subterranean area. 3- （６）生活小道路と幹線道路の交差点近傍に土壌式嫌気
性固定生物膜処理機能を有する沈澱槽を設け、該沈澱槽
と前記生活小道路を中心とする住宅との間に汚水を集水
する排水管網を設け、更に前記幹道路の歩道、街路拐帯
下等の細長い空ｎ１ｌｔこ沿って湛水条件下で自然流下
するゆるやがな勾配で長水路式の排水管兼用浄化槽およ
び余剰汚泥液肥処理槽を並設すると共に、前記沈澱槽で
固液分離された汚水および汚泥をそれぞれ排水管兼用浄
化槽、余剰汚泥液肥処理槽に送液する手段を設け、該排
水管兼用浄化槽は樋状の不透水槽に礫、空缶等よりなる
固定生物膜濾材を充填し、土砂の落下を防止する１１１
形の網を介して土壌を被覆して構成したことを特徴とす
る歩道、街路樹帯下等細長い空間を利用した汚水処理装
置。(6) A sedimentation tank with a soil-type anaerobic fixed biofilm treatment function will be installed near the intersection of a residential road and a main road, and sewage will be collected between the sedimentation tank and residences centered on the residential road. In addition, a drainage pipe network with a gentle slope that flows naturally under flooded conditions along the sidewalks of the main roads, under street strips, etc., and a septic tank that also serves as a drainage pipe and surplus. The sludge and liquid fertilizer treatment tanks are installed in parallel, and a means is provided for sending the sewage and sludge separated into solid and liquid in the settling tank to the drainage pipe-cum-septic tank and the excess sludge-liquid-fertilization treatment tank, respectively. 111 Filling an impermeable tank with a fixed biofilm filter made of gravel, empty cans, etc. to prevent sediment from falling.
A sewage treatment device that utilizes elongated spaces such as sidewalks and under street trees, and is characterized by being constructed by covering soil through a shaped net.