公开(公告)号：US3893333A

公开(公告)日：1975-07-08

申请号：US41579973

申请日：1973-11-14

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SUNAHARA HIROSHI ,  ISHIHARA YUTAKA ,  NAKAYAMA NOBORU

IPC: G01N15/06 ,  G01N5/02 ,  G01N5/04 ,  G01N33/18 ,  G01N11/02

CPC classification number: G01N33/18 ,  G01N5/04

Abstract: A device for automatic determination of suspended solids content in water comprises an automatic sample liquid collection unit, an automatic specimen preparation unit, an automatic filter paper feeding unit, an automatic filter paper transfer unit, an automatic suspended solids filtration unit, an automatic drying unit, an automatic weighing and display unit and an automatic process control unit. A sample liquid automatically collected is prepared automatically to produce a test specimen. The specimen is filtered through a sheet of filter paper supplied by the automatic filter paper feeding unit. The filter paper on which the suspended solids of the specimen are deposited in consequence of the filtration is dried by the automatic drying unit and thereafter weighed. The weight thus taken is automatically converted into a corresponding electrical quantity and forwarded to an arithmetic circuit, in which the suspended solids content of the given liquid is calculated and recorded.

Abstract translation: 用于自动测定水中悬浮固体含量的装置包括自动样品液体收集单元，自动样品制备单元，自动滤纸进给单元，自动滤纸传送单元，自动悬浮固体过滤单元，自动干燥单元 ，自动称重显示单元和自动过程控制单元。 自动收集的样品液体被自动制备以产生试样。 通过由自动进纸单元供应的一张滤纸过滤样品。 将过滤后的样品的悬浮固体沉积在其上的滤纸通过自动干燥单元干燥，然后称重。 这样取得的重量被自动转换成相应的电量，并被转送到运算电路，其中计算和记录给定液体的悬浮固体含量。

公开(公告)号：JPH03111759A

公开(公告)日：1991-05-13

申请号：JP25090989

申请日：1989-09-27

Applicant: AGENCY IND SCIENCE TECHN

Inventor： ISHIHARA YUTAKA ,  MOCHIZUKI MIYUKI ,  KAMATA EIJIRO

IPC: G01N33/18

Abstract: PURPOSE:To make quick speed and accuray compatible and to make it possible to measure BOD by a simple method by adding sulfite into suspension in activated sludge, and quickly decreasing the concentration of dissolved oxygen in the suspension. CONSTITUTION:The suspension of activated sludge which is well accelimatized to organic material in test water is agitated at a constant speed in a measuring container. The concentration of the dissolved oxygen in the suspension is continuously measured. In order to accelerate the decrease in concentration of the dissolved oxygen to the vicinity of 0 ppm by internal breathing, a solution of a specified amount of cobalt salt and a specified amount of sulfite is added, and the dissolved oxygen is quickly (within 10 minutes) consumed. The concentration of the dissolved oxygen is brought to the vicinity of 0 ppm under the state wherein the excessive sulfite is not present. Then the specified amount of the test water is added, and the solution undergoes aeration under the constant conditions. The required time for biochemical oxidation from the starting time of aeration to the rapid increasing point of the concentration of the dissolved oxygen is automatically measured. Then the BOD concentration can be obtained based on the relationship between the preset BOD quantity and the required time for the biochemical oxidation.