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water treatment · chemical dosing

Water Treatment Chemical Dosing Skid P&ID

This process P&ID shows a compact chemical dosing skid for water treatment. Raw water enters the flash mixer while coagulant leaves the chemical day tank through a diaphragm metering pump. FT-101 measures the chemical dosing flow and sends an electric signal to FIC-101. The controller moves fail-closed FV-101 through a pneumatic signal to regulate the chemical dose. The mixed water then enters a contact tank before leaving as treated water. The drawing makes the relationship between the process stream, chemical stream, and control loop clear without attempting to show every skid detail. Add duty and standby pumps, bunding, injection quills, sampling points, interlocks, and chemical-specific safety equipment when the installation requires them.

Tipo P&IDNorma ANSI/ISA-5.1-2009 + ISO 10628-1:2014Motor schematex-pidActualizado 24/9/2026
Water Treatment Chemical Dosing Skid
Drawing preview
La solicitud

“A water treatment chemical dosing skid: a chemical day tank with duty and standby diaphragm metering pumps sends coagulant through FT-101 and fail-closed FV-101 into a flash mixer receiving raw water, then to the mixed-water outlet; FIC-101 controls the dose valve.”

Entonces pruebaAdd a low-level alarm on the chemical day tankAdd a second duty metering pump
Qué hay en este dibujo

Lee las decisiones que hay detrás.

01Chemical source

Store coagulant in a day tank.

02Metering

Use a diaphragm pump for the dosing stream.

03Control

Measure chemical flow and adjust FV-101.

04Process path

Mix raw water and dose before the contact tank.

Use this P&ID pattern for a basic liquid chemical dosing skid ahead of a treatment contact stage.

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Preguntas frecuentes

Preguntas habituales

Why use a diaphragm metering pump?

It is commonly used to deliver a controlled liquid chemical dose.

What does FIC-101 control?

It adjusts the chemical flow-control valve using the measured dosing flow.

What is the contact tank for?

It provides time after mixing for the treatment chemical to act on the water.