Flocculant Preparation Unit

Product Introduction

Flocculant preparation unit is designed for continuously preparing and dosing flocculant solution. It continuously and efficiently completes the combination and mixing of the flocculant and water to obtain homogeneous active flocculant solution. It is mainly used in petroleum, chemical, water treatment and other industries.

The product has the following features:

1. Three-tank integrated (pre-mixing tank, maturation tank, solution storage tank), continuous preparation, easy operation and maintenance, low labor cost.

2. Flocculant dosing pump and water pump start to work at the same time, the flow rates of flocculant and water are adjustable. The concentration of the flocculant solution (within a certain range) can be prepared according to actual needs.

3. The feed hopper and pre-soak device are both heated at a constant temperature, which can reduce the agglomeration or blockage of the pipeline, and ensure a stable and consistent concentration of the prepared solution.

4. The agitator has a unique structure and an appropriate rotation speed, which can ensure the homogenization of the solution.

Working Principle

1. When the feed hopper is filled with dry powder, the dosage system starts to transport the dry powder to the pre-soak device. At the same time, the solenoid valve of the water inlet pipe opens. After the dry powder is soaked in the pre-soak device, it flows to the mixing tank by gravity for stirring and mixing.

2. The flocculant solution that has been initially stirred and mixed flows through the overflow weir to the maturation tank for further stirring and combination. After a certain period of effective and gentle low-speed stirring, the flocculant solution will meet the requirements of homogenization, maturation and activity. Then it flows through the overflow weir to the solution storage tank.

3. When the solution storage tank is filled with flocculant solution, the liquid level switch sends a signal, the dosage system and the solenoid valve will automatically stop. At this time, the flocculant solution is ready, the ‘Ready’ indicator light will light up.

4. The flocculant dosing pump starts, and the dilution water solenoid valve opens at the same time. The flocculant solution will be pumped to the next working procedure.

5. When the liquid level in the solution storage tank reaches the set low liquid level, the liquid level switch sends a signal, and the device starts to automatically repeat the above steps, so as to ensure that there is enough flocculant solution in the solution storage tank.

Equipment Structure

1. Dosage System

It is composed of a feed hopper, a screw conveyor, an electric heater.

a. The volume of the feed hopper can meet the long-term dosage requirements. The hopper is equipped with a sight glass for manual observation of the material level. The level meter can automatically monitor the material level and send out an alarm signal.

b. The screw conveyor is composed of worm gear reducer and a high-precision screw. The reducer has the characteristics of light weight, stable operation and high efficiency. The high-precision screw can fully meet the user’s dosage requirements.

c. The electric heater is installed in the conveyor discharge pipe to avoid the powder agglomeration or deterioration, thereby blocking the discharge pipe.

2. Dissolving System

It is composed of a pre-soak device, a tank body and three agitators.

a. There is a swirl hopper in the pre-soak device. The water enters the swirl hopper from the tangential direction, forming a swirl water curtain, wetting and mixing the dry powder, and then enters the pre-mixing tank.

b. The tank body is a three-tank structure, which is a pre-mixing tank, a maturation tank, and a solution storage tank. There are partitions and overflow weirs between each tank. During the preparation of the flocculant solution, the flocculant solution must flow from the bottom of the partition through the upper overflow weir to the next tank, which can avoid the short-flow of raw flocculant solution to the mature flocculant solution.

c. The tank body is a fully enclosed structure, covers with handles are installed on the top of the tank. Concealed overflow pipes are installed in the pre-mixing tank to prevent liquid from overflowing from the tank when the liquid level exceeds the set high level. The three tanks are equipped with flocculant solution outlet pipes and manual ball valves in the bottom. The three outlet pipes are connected together, one end is used as a flocculant feed pipe, and the other end is used as a drain pipe.

d. Three agitators are installed in the pre-mixing tank, maturation tank, and solution storage tank. The agitator has a unique structure and an appropriate rotation speed, which can ensure the homogenization of the solution.

3. Water Supply System

It is composed of UPVC pipes, manual ball valves, a filter, a pressure gauge, a solenoid valve, stop valves and a rotor flowmeter, etc.

a. The filter is used to intercept impurities in the water and protect the solenoid valve.

b. The pressure gauge is installed behind the filter to display the pressure. If the pressure is too low, it means that the filter is blocked and the impurities in the filters need to be removed.

c. The solenoid valve receives the electrical signal of water inlet, realizing automatic water inlet.

d. The rotor flowmeter is used to display the water inlet flow.

e. The stop valve is used to adjust the water inlet flow, which is convenient and stable to adjust.

4. Control System

It is composed of an electrical control cabinet and a liquid level switch.

a. The electrical control cabinet is equipped with Schneider electrical components.

b. The liquid level switch measures accurately and the signal is stable.

Application Areas

1. Wastewater treatment: flocculation treatment of municipal or industrial wastewater; treatment of sludge dewatering process; tertiary and quaternary treatment of municipal wastewater.

2. Drinking water purification: it can be used to improve the effect of purification and precipitation in waterworks.

3. Other industries: chemical, electroplating, food and beverage, papermaking, etc.

Technical Parameters