ETP Operation, Purpose:
ETP Operation, The purpose of this SOP is to define the standard operating procedure of Effluent Treatment Plant of XX Pharmaceuticals Ltd.
ETP Operation, Scope:
This Standard Operating Procedure applies to the Effluent Treatment Plant of XX Pharmaceuticals Ltd.
Definitions / Abbreviation:
[][]SOP: Standard Operating Procedure.
[][]ETP: Effluent Treatment Plant.
[][]PPE: Personal Protective Equipment.
[][]PAC: Poly Aluminum Chloride.
[][]MGF: Multi Grade Filter.
[][]ACF: Activated Carbon Filter.
Responsibilities:
Engineering (Validation) Department
[][]Preparing the SOP and revise it when necessary.
Engineering (Maintenance) Department
[][]To provide necessary support for smooth operation of the system.
[][]To ensure that the operators are responsible to carry out the operation and regular checking of the critical components.
Operators
[][]To operate the ETP according to this SOP.
Manager, Engineering
[][]To ensure that the operation of ETP are done properly.
Manager, Quality Assurance
[][]To ensure overall implementation of this SOP.
Procedure:
Precautions:
[][]All operation work must be done safely in accordance with the requirements of the Plant Safety Statement and the safety notices around the plant. Specific attention must be paid to the following:
[][]Handle the chemicals by wearing PPE.
[][]Ensure all the utilities before doing any operation.
System Description:
[][]The capacity of ETP is 12000 Ltr/hr. The effluents from the Solid and Liquid block come into the neutralization and equalization tanks respectively via bar screen chambers. In the bar screen chamber the floating material or solid material is filtered. A dosing of lime is provided in the neutralization tank if pH correction is needed.
[][]Also, the effluents are aerated in these tanks with air which is provided by the blowers. After being neutralized in the neutralization tank the effluents goes to equalization tank and then the effluent is transferred to flocculation tank through effluent transfer pumps.
[][]A dosing of PAC is provided in flocculation tank to flocculate all the effluents. Poly electrolyte dosing is provided in the transferring pipe of effluents from flocculation tank to lamella. After lamella the effluent is passed to the aeration tank.
[][]In aeration tank the effluents are aerated with air. A dosing of NaOH is provided if it is necessary. There is a buffer tank after aeration tank where one kg of urea will be provided after every 3 months of operation.
[][]There is a line under the buffer tank to transfer the sludge to underground sludge tank and then to sludge pit by sludge transfer pump.
[][]Clear water from buffer tank is stored in the clear water tank. There are two pumps to transfer the clear water to final storage tank through MGF and ACF. One pump is used at a time.
Operating Procedure:
Starting of ETP:
[][]Perform backwash of Multi Grade Filter for 15 minutes and Active Carbon Filter for 15 minutes daily before starting the plant by clean water.
[][]Switch ON the main breaker.
[][]Switch On the Blower A/B, effluent transfer pump 1/2 (alternative), Clean water transfer pump 1/2 (alternate) and keep the position of each switch in Auto mode. The dosing pumps of lime, PAC and polyelectrolyte are synchronized with the effluent transfer pumps. When the effluent transfer pumps are switched on those dosing pumps are started and vice versa. The dosing pump of NaOH is started manually when necessary.
[][]There are two float switches in the equalization and clear water tanks. When the equalization tank level will be high the effluent transfer pump will be switched on automatically and effluents will be transferred to flocculation tank.
[][]At that time, the Polyelectrolyte, PAC and lime dosing will be started automatically. If the equalization tank level becomes low, the pump will be switched off automatically.
[][]If the clean water tank level becomes high, the clean water transfer pump will be switched on and effluent transfer pump will be switched off automatically. When the level of clean water tank becomes low the clean water transfer pump will be switched off and effluent transfer pump will be switched on automatically.
[][]The effluent is transferred from flocculation tank to clear water tank via lamella, aeration tank and buffer tank by overflow of each tank.
[][]The blowers are changed over automatically after 10 minutes of operation if the main switch remains in Auto position.
[][]After 8 days of operation switch ON the sludge transfer pump to transfer the sludge to the sludge pit.
During operation:
[][]During operation fill up the operational log sheet (Annexure – I) on every hour.
[][]Check the dosing tank level.
Stopping procedure:
[][]Switch OFF the effluent transfer pumps and blowers.
[][]Switch OFF the clear water transfer pumps.
[][]Switch OFF the dosing pumps.
Annexure:
Annexure – I: Daily Operational Log Sheet of ETP.