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Batch pH Adjustment System Batch
pH Adjustment System

Engineering Specifications

1. APPLICATION

1.1. Overall Process Description

1.1.1. The batch pH adjustment system will be designed to adjust the pH of a specific volume of process water, wastewater or potable water stream to a specific set-point. The reaction tank will measure the incoming pH, mix the contents and automatically inject "acid" or "caustic" until the contents reach the desired set-point.

1.2. Required System Performance

1.2.1. The batch pH adjustment system shall adjust the pH of a set volume of water to the system set point. Where the pH of the system influent is ????. The treated water shall achieve a pH of ???? plus or minus ????.

2. SCOPE

2.1. The Skid

2.1.1. A steel skid is provided for supporting the entire system. The skid features a welded 4" steel "C" channel frame, a 1/4" steel deck plate.

2.1.2. A containment / drip pan shall be provided for protecting the steel skid from leaking or spilled corrosive fluids. A drain connection will be provided for plumbing the containment pan to a suitable location. The pan will be fabricated from polypropylene, stainless steel, etc., and features 8" high walls.

2.2. Reaction Tank

2.2.1. A reaction tank is provided with ???? gallon capacity.

2.2.2. The reaction tank will be manufactured of HDPE polypropylene. The tank will be designed for fluids with a s.g. of up to 1.9 with a safety factor of 2:1. The tank will have provisions for positive ventilation. The top will be designed to support all mounted equipment and the weight of one 200 lb. man without significant deflection.

2.3. Chemical Feed System

2.3.1. Two (2) chemical metering pumps (LMI or equal) will be provided for the addition of acid and caustic. The pumps will come equipped with manual control for stroke length (20-100%) and stroke frequency (5-100 per minute).

2.3.2. One (1) pH probe (Signet or equal) will be provided.

2.3.3. One controller (Signet or equal) will be provided, with LCD display of 0-14 pH range. The controller is to be installed in a NEMA 4 control panel.

2.3.4. The pH controller will turn the acid or caustic pump on/off via set points.

2.4. Control Panel

2.4.1. One (1) system control panel is provided with function selector switches, pilot lights, relays, motor starters, and circuit breakers. Panel includes a safety disconnect switch. The motor contactors/starters shall be provided with re-settable thermal overload protection. The control panel will be pre-mounted and wired.

2.4.2. Available Power = ???? V, ???? Hz, ???? phase

2.4.3. NEMA Rating: NEMA 4, suitable for outdoor installations

3. GENERAL Specifications

Follow this link to the "Common Engineering Specifications" document that covers all of the common specifications that relate to all Hydro-Flo technologies manufactured equipment.