JP2017064635A5

JP2017064635A5 -

Info

Publication number: JP2017064635A5
Application number: JP2015193634A
Authority: JP
Filing date: 2015-09-30
Publication date: 2018-05-17
Anticipated expiration: 2035-09-30

Description

本発明の第一の態様によれば、窒素除去装置は、好気性処理領域と嫌気性処理領域とを有し、有機性窒素化合物を含有する被処理水の生物学的脱窒を行う単一槽からなる反応槽と、前記反応槽の下流に設けられ、嫌気性処理領域をなす嫌気性処理槽と好気性処理領域をなす好気性処理槽とからなる一組以上の処理槽組と、前記反応槽へ前記被処理水を供給する原水供給管と、前記反応槽の液相部を前記好気性処理領域と前記嫌気性処理領域とに区画する隔壁と、前記反応槽に形成された前記原水供給管の出口である原水投入口と、前記隔壁上の前記原水投入口から前記反応槽の長さ及び幅からなる平面上の直線距離及び高さ方向の直線距離において可能な限り離れた位置に設けられて前記嫌気性処理領域と前記好気性処理領域とを連通させる連通口と、前記反応槽と前記処理槽組のうち少なくとも一つの前記好気性処理領域から前記嫌気性処理領域の最上流部へ前記被処理水を循環させる循環流路と、前記原水供給管から供給される前記被処理水の一部を前記嫌気性処理槽に供給する第二原水供給管と、を有する。 According to the first aspect of the present invention, the nitrogen removal apparatus has a single aerobic treatment region and an anaerobic treatment region, and performs biological denitrification of water to be treated containing an organic nitrogen compound. A reaction tank composed of a tank, and one or more treatment tank sets that are provided downstream of the reaction tank, and include an anaerobic treatment tank that forms an anaerobic treatment area and an aerobic treatment tank that forms an aerobic treatment area, and Raw water supply pipe for supplying the water to be treated to the reaction tank, a partition partitioning the liquid phase part of the reaction tank into the aerobic treatment area and the anaerobic treatment area, and the raw water formed in the reaction tank A raw water inlet that is an outlet of the supply pipe, and a position that is as far away as possible from the raw water inlet on the partition wall in a linear distance on the plane and a linear distance in the height direction that are the length and width of the reaction tank. Provided to communicate the anaerobic treatment region and the aerobic treatment region From a passage, a circulation channel for circulating the treated water from the aerobic treatment region of at least one of the reaction vessel and the treatment vessel group to the uppermost stream portion of the anaerobic treatment region, and the raw water supply pipe A second raw water supply pipe for supplying a part of the treated water to be supplied to the anaerobic treatment tank.

上記窒素除去装置において、前記連通口は、前記隔壁の下端に設けられていてよい。 In the denitrification device, the communication port may be provided under end of the partition wall.

本発明の第二の態様によれば、窒素除去装置の改造方法は、有機性窒素化合物を含有する被処理水の生物学的脱窒における嫌気性処理と好気性処理とを行う単一槽からなる反応槽と、前記反応槽の下流に設けられ、嫌気性処理領域をなす嫌気性処理槽と好気性処理領域をなす好気性処理槽とからなる一組以上の処理槽組と、前記反応槽へ前記被処理水を供給する原水供給管と、前記反応槽に形成された前記原水供給管の出口である原水投入口と、前記反応槽から前記被処理水を排出する排出管と、前記排出管から前記反応槽へ前記被処理水を循環させる循環流路と、を有する窒素除去装置の改造方法であって、前記反応槽の液相部を好気性処理領域と嫌気性処理領域とに区画する隔壁であって、前記原水投入口から前記反応槽の長さ及び幅からなる平面上の直線距離及び高さ方向の直線距離において可能な限り離れた位置に設けられて前記嫌気性処理領域と前記好気性処理領域とを連通させる連通口を有する隔壁を形成する工程と、前記原水供給管から供給される前記被処理水の一部を前記嫌気性処理槽に供給する第二原水供給管と、形成する工程と、前記循環流路の出口を前記嫌気性処理領域の最上流部へ移動させる工程と、を含む。 According to the second aspect of the present invention, a method for remodeling a nitrogen removing apparatus is provided from a single tank that performs anaerobic treatment and aerobic treatment in biological denitrification of water to be treated containing organic nitrogen compounds. A reaction tank, an anaerobic treatment tank that is provided downstream of the reaction tank and forms an anaerobic treatment area, and an aerobic treatment tank that forms an aerobic treatment area, and the reaction tank A raw water supply pipe for supplying the water to be treated, a raw water inlet that is an outlet of the raw water supply pipe formed in the reaction tank, a discharge pipe for discharging the water to be treated from the reaction tank, and the discharge A recirculation flow path for circulating the water to be treated from a pipe to the reaction vessel, wherein the liquid phase part of the reaction vessel is divided into an aerobic treatment region and an anaerobic treatment region to a partition wall, or the length and width of the reactor from the raw water inlet Forming a partition wall having a communication port provided in the distant as possible positions in the linear distance and the height direction of the linear distance in the plane communicating with said anaerobic treatment region wherein the aerobic treatment region comprising, A second raw water supply pipe for supplying a part of the water to be treated supplied from the raw water supply pipe to the anaerobic treatment tank; a forming step; and an outlet of the circulation channel at the end of the anaerobic treatment area. Moving to the upstream part.

Claims

A reaction tank comprising a single tank having an aerobic treatment area and an anaerobic treatment area, and performing biological denitrification of water to be treated containing an organic nitrogen compound;
One or more treatment tank sets that are provided downstream of the reaction tank and are composed of an anaerobic treatment tank that forms an anaerobic treatment area and an aerobic treatment tank that forms an aerobic treatment area,
A raw water supply pipe for supplying the treated water to the reaction tank;
A partition partitioning the liquid phase part of the reaction vessel into the aerobic treatment region and the anaerobic treatment region;
A raw water inlet that is an outlet of the raw water supply pipe formed in the reaction tank;
The anaerobic treatment region and the favorable position are provided as far as possible from the raw water inlet on the partition wall as far as possible in a linear distance on a plane and a linear distance in the height direction of the reaction tank. A communication port for communicating with the tempering treatment area;
A circulation passage for circulating the water to be treated from at least one of the aerobic treatment region to the most upstream part of the anaerobic treatment region of the reaction vessel and the treatment vessel group;
A nitrogen removal apparatus comprising: a second raw water supply pipe that supplies a part of the water to be treated supplied from the raw water supply pipe to the anaerobic treatment tank.

2. The raw water inlet and a circulating liquid inlet that is an outlet of the circulation channel are opened to the reaction tank, and the raw water inlet and the circulating liquid inlet are arranged close to each other. Nitrogen removal equipment.

Said communication port, the nitrogen removal apparatus according to claim 1 or claim 2 is provided below the end of the partition wall.

A reaction tank composed of a single tank that performs anaerobic treatment and aerobic treatment in biological denitrification of water to be treated containing an organic nitrogen compound;
One or more treatment tank sets that are provided downstream of the reaction tank and are composed of an anaerobic treatment tank that forms an anaerobic treatment area and an aerobic treatment tank that forms an aerobic treatment area,
A raw water supply pipe for supplying the treated water to the reaction tank;
A raw water inlet that is an outlet of the raw water supply pipe formed in the reaction tank;
A discharge pipe for discharging the treated water from the reaction tank;
A recirculation channel for circulating the water to be treated from the discharge pipe to the reaction tank,
A partition that divides the liquid phase part of the reaction vessel into an aerobic treatment region and an anaerobic treatment region, and a linear distance and a height direction on a plane composed of the length and width of the reaction vessel from the raw water inlet Forming a partition wall having a communication port that is provided as far as possible in a straight line distance and communicates the anaerobic treatment region and the aerobic treatment region;
A step of forming a second raw water supply pipe for supplying a part of the treated water supplied from the raw water supply pipe to the anaerobic treatment tank; and
Moving the outlet of the circulation channel to the most upstream part of the anaerobic treatment region.