JPS6117064A - Measurement for water content of dehydrated sludge - Google Patents
Measurement for water content of dehydrated sludgeInfo
- Publication number
- JPS6117064A JPS6117064A JP13650184A JP13650184A JPS6117064A JP S6117064 A JPS6117064 A JP S6117064A JP 13650184 A JP13650184 A JP 13650184A JP 13650184 A JP13650184 A JP 13650184A JP S6117064 A JPS6117064 A JP S6117064A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- pump
- pressure
- dehydrated cake
- water content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
本発明の技術分野一
本発明は、汚泥脱水装置における脱水ケーキ水分の計測
方法に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a method for measuring the water content of a dehydrated cake in a sludge dewatering apparatus.
汚泥脱水機から排出される脱水ケーキの水分は、後工程
である汚泥乾燥焼却設備の負荷に大きな影響を与えるの
で、入念な計測管理が必要である。従来は、脱水ケーキ
水分を連続的に測定しうる計器が実用化されていなかっ
たため、回分式に操作者が脱水ケーキをサンプリングし
、天秤等でその重量を測定し、次いで水分を蒸発させて
乾燥後の重量を測定し、ケーキ水分を算出していた。こ
の操作を自動化するにしても、・す゛ンプリンタ機構・
試料の調製機構が複雑化し、設備費が高価となる欠点が
あった。The water content of the dehydrated cake discharged from the sludge dewatering machine has a large impact on the load on the sludge drying and incineration equipment, which is a subsequent process, so careful measurement and management is required. Previously, there was no practical instrument that could continuously measure the water content of dehydrated cakes, so operators sampled the dehydrated cakes in batches, measured their weight using a balance, etc., and then evaporated the water and dried them. The remaining weight was measured and the moisture content of the cake was calculated. Even if this operation is automated,
This method has the disadvantage that the sample preparation mechanism is complicated and the equipment cost is high.
本発明の目的
本発明は、汚泥脱水装置の脱水ケーキの水分計測管理を
安価外方法で無人化し、且つ汚泥脱水機へのフィードバ
ック制御が安定して行えるよう、脱水ケーキ水分を連続
的且つリアルタイムで出力しうるものである。Purpose of the Invention The present invention aims to automate the measurement and management of the moisture content of the dehydrated cake in a sludge dewatering device using an inexpensive method, and to continuously and in real time measure the moisture content of the dehydrated cake so that feedback control to the sludge dewatering device can be stably performed. It can be output.
本発明の構成
本発明は、脱水ケーキを汚泥圧送ポンプで圧送する際に
、咳ポンプの脱水ケーキ吐出圧力と該ポンプロータの回
転数とを圧力検出伝送器および回転数検出伝送器で連続
的に検出すると同時に、その検出値信号を演算器に送り
脱水ケーキ水分を算定するようにしたことを特徴とする
脱水汚泥の水分の計測方法に関する。Structure of the Present Invention The present invention provides a means for continuously measuring the dehydrated cake discharge pressure of the cough pump and the rotational speed of the pump rotor using a pressure detection transmitter and a rotational speed detection transmitter when a dewatered cake is pumped by a sludge pressure pump. The present invention relates to a method for measuring the water content of dewatered sludge, characterized in that, at the same time as the detection is performed, the detected value signal is sent to a computing unit to calculate the water content of the dehydrated cake.
本発明に妾では、脱水ケーキの搬送方式に、−軸ねじポ
ンプ等を用いた圧送方式をとシ、脱水ケーキ水分の圧送
圧力及びポンプ回転数に対する定量的因果関係を演算回
路内に定義する。In accordance with the present invention, the dewatered cake is conveyed by a pressure feeding method using a shaft screw pump, etc., and a quantitative causal relationship with respect to the pumping pressure and pump rotation speed of the dehydrated cake water is defined in the arithmetic circuit.
すなわち、本発明方法では、圧送配管内の圧力とポンプ
の回転数を検出し、脱水ケーキ水分をｎ出ｆるシステム
である。ここで、本発明の方法では、脱水ケーキ水分が
増加すると、圧送圧力は低下し、一方、水分が減少する
と、圧送圧力が増加することを利用するものである。That is, the method of the present invention is a system that detects the pressure in the pressure-feeding pipe and the rotational speed of the pump, and extracts water from the dehydrated cake. Here, the method of the present invention utilizes the fact that when the water content of the dehydrated cake increases, the pumping pressure decreases, and on the other hand, when the water content decreases, the pumping pressure increases.
上記特徴を有する本発明は、し尿処理、下水処理、その
他各種産業廃水処理に於る汚泥脱水設備に有利に適用し
得る。The present invention having the above features can be advantageously applied to sludge dewatering equipment in human waste treatment, sewage treatment, and various other industrial wastewater treatments.
以下に、本発明方法を図面に基づき説明する。The method of the present invention will be explained below based on the drawings.
第１図は、本発明方法を説明するフローである。FIG. 1 is a flowchart illustrating the method of the present invention.
第１図において、１は原料汚泥（濃縮汚泥）を貯留する
汚泥貯留槽、２は汚泥脱水機３に原料汚泥を供給する汚
泥供給ポンプ、３は汚泥脱水機、４は汚泥脱水機６から
排出、される脱水ケーキを圧送する汚泥圧送ポンプ、５
は圧力検出伝送器、６はポンプロータの回転数検出伝送
器、７は演算器、８は指示計（又は指示調節計）、９は
汚泥脱水機３から排出される分離液を受は入れる分離液
槽でちる。また、Ｐはケーキ圧送配管内圧力、Ｎはポン
プロータ回転数を示し、脱水ケーキ水分Ｗは、前記Ｐ及
びＮの関数として演算される。In Fig. 1, 1 is a sludge storage tank that stores raw sludge (thickened sludge), 2 is a sludge supply pump that supplies raw sludge to a sludge dewatering machine 3, 3 is a sludge dewatering machine, and 4 is discharged from a sludge dewatering machine 6. , a sludge pump that pumps the dehydrated cake, 5
is a pressure detection transmitter, 6 is a pump rotor rotation speed detection transmitter, 7 is a computing unit, 8 is an indicator (or indicator controller), and 9 is a separation device that receives the separated liquid discharged from the sludge dehydrator 3. Chill in liquid tank. Further, P indicates the pressure inside the cake pressure-feeding pipe, N indicates the rotation speed of the pump rotor, and the dehydrated cake moisture W is calculated as a function of the above-mentioned P and N.
汚泥脱水機３から排出された脱水ケーキは、汚泥圧送ポ
ンプ４によって圧送される。この際、ポンプ吐出側の圧
力Ｐ（５〜２０ ｋｇ／ｃｓ？ ）及びポンプロータの
回転数Ｎ （１０〜３００ｒ、ｐ、ｍ）を圧力検出伝送
器５、回転数検出伝送器６それぞれによって連続的に検
出し、演算器′７に信号が出力される。演算器７では、
圧力検出伝送器５、回転数検出伝送器６それぞれの出力
信号をパラメータとし、て脱水ケーキ水分が演算され、
指示計８に表示される。The dewatered cake discharged from the sludge dehydrator 3 is pumped by a sludge pump 4. At this time, the pressure P (5 to 20 kg/cs?) on the pump discharge side and the rotation speed N (10 to 300 r, p, m) of the pump rotor are continuously measured by the pressure detection transmitter 5 and the rotation speed detection transmitter 6, respectively. is detected and a signal is output to the arithmetic unit '7. In the computing unit 7,
Using the output signals of the pressure detection transmitter 5 and the rotation speed detection transmitter 6 as parameters, the moisture content of the dehydrated cake is calculated.
displayed on the indicator 8.
本発明の汚泥脱水装置における脱水ケーキ水分の計測方
法として、下記の点を特徴とする。The method for measuring the moisture content of the dehydrated cake in the sludge dewatering apparatus of the present invention is characterized by the following points.
（１）脱水ケーキの移送方法をポンプ圧送式とする。(1) The dehydrated cake is transferred using a pump.
（２） ポンプのケーキ吐出圧力とロータ回転数から
脱水ケーキ水分を算定する。(2) Calculate the moisture content of the dehydrated cake from the pump cake discharge pressure and rotor rotation speed.
本発明の効果
本発明方法によシ、従来方式で得られなかつ、九下記利
点が得られる。Effects of the Present Invention The method of the present invention provides the following nine advantages that cannot be obtained with conventional methods.
（１） 自動サンプリング機構、試料調製機構等複雑
々機構を要さず、簡便で安価である。(1) It does not require complicated mechanisms such as automatic sampling mechanism or sample preparation mechanism, and is simple and inexpensive.
（２）連続的、且つリアルタイムで脱水ケーキ水分が出
力でき、フィードバック制御等をかける場合の信頼性が
向上する。(2) Dehydrated cake water can be output continuously and in real time, improving reliability when applying feedback control, etc.
第１図は、本発明の詳細な説明するフローである。図中
の各記号は、以下の意味を示す。
１：汚泥貯留槽
２：汚泥供給ポンプ
５：汚泥脱水機
４：汚泥圧送ポンプ
５：圧力検出伝送器
６：ポンプロータの回転数検出伝送器
７：演算器
８：指示計
９：分離液槽
復代理人 内 １） 明
復代理人 萩 原 亮 −FIG. 1 is a detailed flowchart of the present invention. Each symbol in the diagram has the following meaning. 1: Sludge storage tank 2: Sludge supply pump 5: Sludge dehydrator 4: Sludge pressure pump 5: Pressure detection transmitter 6: Pump rotor rotation speed detection transmitter 7: Computing unit 8: Indicator 9: Separated liquid tank return Agents 1) Meifuku agent Ryo Hagiwara -
Claims (1)
の脱水ケーキ吐出圧力と該ポンプロータの回転数とを圧
力検出伝送器および回転数検出伝送器で連続的に検出す
ると同時に、その検出値信号を演算器に送り脱水ケーキ
水分を算定するようにしたことを特徴とする脱水汚泥の
水分の計測方法。When a dehydrated cake is pumped by a sludge pressure pump, the dehydrated cake discharge pressure of the pump and the rotation speed of the pump rotor are continuously detected by a pressure detection transmitter and a rotation speed detection transmitter, and at the same time, the detected value signal is transmitted. A method for measuring the water content of dehydrated sludge, characterized in that the water content of the dehydrated sludge is calculated by sending the water to a calculator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13650184A JPS6117064A (en) | 1984-07-03 | 1984-07-03 | Measurement for water content of dehydrated sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13650184A JPS6117064A (en) | 1984-07-03 | 1984-07-03 | Measurement for water content of dehydrated sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6117064A true JPS6117064A (en) | 1986-01-25 |
Family
ID=15176637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13650184A Pending JPS6117064A (en) | 1984-07-03 | 1984-07-03 | Measurement for water content of dehydrated sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6117064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548910A (en) * | 2018-04-16 | 2018-09-18 | 中国计量大学 | A kind of deep dehydration sludge moisture content detection method |
-
1984
- 1984-07-03 JP JP13650184A patent/JPS6117064A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548910A (en) * | 2018-04-16 | 2018-09-18 | 中国计量大学 | A kind of deep dehydration sludge moisture content detection method |
| CN108548910B (en) * | 2018-04-16 | 2020-06-23 | 中国计量大学 | Method for detecting water content of deep dewatered sludge |
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