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            PWI Co., Ltd.

            Solutions

            Solutions

            Coalbed Methane Extraction Water Softening

            Three years warranty

            Three years warranty

            Skidding assembly

            Skidding assembly

            Commissioning and training

            Commissioning and training

            Specificities

            The main sources of CBM wastewater are:


            (1) Drilling fluids: Drilling fluids are specialised slurries, usually with chemicals added to protect the well wall, and are usually formulated with water, bentonite and sodium hydroxide.

            (2) Fracturing fluid: Fracturing fluid can be used to improve the yield of coalbed methane extraction, and it usually plays the roles of thickening, cross-linking and pH adjustment, etc. The main components of its formula are salts, strong alkaline substances and surfactants.

            (3) Gas drainage: gas extraction usually adopts the drainage method, so the composition of wastewater discharged is similar to that of groundwater, and certain ions may exceed the standard in some areas.

            (4) Domestic wastewater: wastewater discharged from the production site.



            To sum up, the nature of CBM wastewater can be expressed in the following aspects:


            (1) The extracted water contains a variety of inorganic ions, among which, the anions are dominated by Cl- and HCO-, and the cations are dominated by Na+ and K+.

            (2) The most obvious characteristics of the extracted water are high salinity and high mineralisation.

            (3) Due to the fracturing fluid, the wastewater will have excessive organic matter.

            (4) There are problems of heavy metal ions exceeding the standard.


            Process flow diagram

            Equipment list

            Capacity 5-75m 3/h

            Name

            Basic system

            Quantity

            Senior system

            Quantity

            Complete system

            Quantity

            System description

            Reaction system

            Sludge pump

            1 unit

            Sludge pump

            1 unit

            Sludge pump

            2 units

            The reaction system mainly doses right chemicals such as coagulants and coagulants to the sludge to promote the flocculation of sludge particles and improve its dehydration performance.

            Pipeline mixer

            4 pieces

            MR reaction tank

            1 set

            MR reaction tank

            1 set

            Acid alkali dosing cartridge

            1 piece

            Acid alkali dosing cartridge

            2 pieces

            Acid alkali dosing cartridge

            2 pieces

            Acid alkali dosing pump

            1 unit

            Acid alkali dosing pump

            1 unit

            Acid alkali dosing pump

            2 units

            Calcium hydroxide dosing bucket

            1 piece

            Calcium hydroxide dosing bucket

            2 pieces

            Calcium hydroxide dosing bucket

            2 pieces

            Calcium hydroxide dosing pump

            1 unit

            Calcium hydroxide dosing pump

            1 unit

            Calcium hydroxide dosing pump

            2 units

            Sodium carbonate dosing bucket

            1 piece

            Sodium carbonate dosing bucket

            2 pieces

            Sodium carbonate dosing bucket

            2 pieces

            Sodium carbonate dosing pump

            1 unit

            Sodium carbonate dosing pump

            1 unit

            Sodium carbonate dosing pump

            2 units

            PH online detector

            1 piece

            PH online detector

            1 piece

            PH online detector

            1 piece

            Flowmeter

            /

            Flowmeter

            /

            Flowmeter

            1 piece

            Sedimentation system

            VMC

            1 unit

            VMC

            1 unit

            VMC

            1 unit

            The sedimentation system is mainly used for concentration treatment of sewage, facilitating pressure filtration.

            Pneumatic sludge discharge valve

            1 piece

            Pneumatic sludge discharge valve

            1 piece

            Pneumatic sludge discharge valve

            1 piece

            Sludge pump

            1 unit

            Sludge pump

            1 unit

            Sludge pump

            2 units

            Pressure filtration system

            Mixing tank

            1 piece

            Mixing tank

            1 piece

            Mixing tank

            1 piece

            The main function of the pressure filtration system is solid-liquid separation

            Feeding pump

            1 unit

            Feeding pump

            1 unit

            Feeding pump

            2 units

            KMP

            1 set

            KMP

            1 set

            KMP

            1 set

            Control system

            PLC control cabinet

            1 set

            PLC control cabinet

            1 set

            PLC control cabinet

            1 set

            All automation control of equipment provided by our company will be integrated into this system and run fully automatically

            Auxiliary materials

            Pipelines, valves, cables, etc

            1 batch

            Pipelines, valves, cables, etc

            1 batch

            Pipelines, valves, cables, etc

            1 batch

            The specific quantity of cables and pipe valves required within the system depends on the customer's on-site situation.

            Please request a detailed list of system from our sales consultant.


            Function comparison

            Function

            Basic system

            Senior system

            Complete system

            Fully automated control

            Fault alarm

            Automatic reaction container

            -

            Automatic backup switching

            -

            -

            Automatic regulation of dosing

            -

            -

            Frequency conversion control or not

            -

            -

            Soaking interval time

            4 hours

            8 hours

            Fully automatic


            Optional features

            Serial number

            Name

            Specifications

            Function

            1

            Water Reuse

            PE tank+pump+liquid level gauge+integrated control

            Transport the supernatant to the production line for reuse using pressurized transportation method

            2

            Special anti-corrosion

            FRP Coating for the liquid connection parts

            Prevent corrosion caused by high acid, high salt, high fluoride, etc

            3

            Special materials

            304/316L, etc

            Selection based on user material characteristics

            4

            Overall Skid Installation

            Patterned steel platform+fixed bracket+trunking, pipelines, cables, etc

            Easy to install, transport, and move flexibly

            5

            Precision filter

            Including multi-stage centrifugal pump

            Reduce the content of suspended solids in the filtrate and regulate water quality

            6

            Explosion-proof

            DIIBT4/CT4, etc

            Electrical components, motors, etc. placed in explosion-proof areas are classified according to different levels

            7

            Conveying system/temporary storage system

            Conveyor/sludge storage hopper

            Mud cakes can be collected through conveying equipment or temporary storage systems, reducing manual labor.


            +86-523-88638888

            info@pwi-de.com

            66 Wuliangsi Road, Taizhou, Jiangsu, China

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