Contents
1. WehoPuts miniature wastewater
treatment plant – general
....................................3
1.1 General ........................................................................................ 3
1.2 Operational safety ...................................................................... 3
1.3 Foreign material and debris in wastewater ................................ 3
1.4 Service work................................................................................ 4
1.5 Treatment process ...................................................................... 4
1.6 Technical data ............................................................................. 5
1.7 Equipment specifi cation ............................................................. 6
2. Treatment plant installation
...........................7
2.1 Transport, handling and storage ................................................ 7
2.2 Planning and choice of treatment plant location ..................... 7
2.2.1 Planning ................................................................................... 8
2.3 Installation .................................................................................. 8
2.3.1 Before installation ................................................................... 8
2.3.2 Digging trench ........................................................................ 8
2.3.3 Anchoring and installation of treatment plant ..................... 9
2.3.4 Making pipe connections ......................................................10
2.3.5 Assembling of ventilation pipe and signal lamp................... 11
2.3.6 Electrical connections ........................................................... 11
2.3.7 Constructing ground frost isolation ..................................... 12
2.3.8 Filling and locking ................................................................. 12
3. Startup
..............................................................13
3.1 Installation inspection .............................................................. 13
3.2 Releasing pumps ...................................................................... 13
3.3 Filling chemical container ........................................................ 13
3.4 GSM modem initialization ........................................................ 14
3.4.1 SIM card installation .............................................................. 14
3.4.2 Determining GSM number .................................................... 14
3.5 Turning on treatment plant ...................................................... 14
3.6 Sludge removal using a vacuum truck ..................................... 14
3.7 Sludge removal using sludge bags ........................................... 14
4. Treatment plant management
......................15
4.1 Treatment plant control unit .................................................... 15
4.2 Process monitoring .................................................................. 15
4.3 Operation settings ................................................................... 16
4.4 Acknowledging alarms and reminders ..................................... 17
4.5 GSM remote management ....................................................... 17
5. Operation and maintenance
..........................18
5.1 Treatment plant operation monitoring .................................... 18
5.2 Filling chemical container ........................................................ 18
5.3 Sludge removal ......................................................................... 19
5.3.1 Sludge removal with sludge bag ........................................... 19
5.3.1.1 Sludge bag composting ...................................................... 19
5.3.2 Sludge removal using a vacuum truck ..................................20
5.3.2.1 Settling test ........................................................................21
5.4 Sampling ..................................................................................21
5.5 Treatment plant pH adjustment ..............................................22
5.5.1 Lime type ...............................................................................22
5.5.2 Dosing and monitoring .........................................................22
6. Faults and malfunctions
............................... 23
6.1 Alarms and reminders ...............................................................23
6.2 Activities during disturbances .................................................23
6.2.1 Faulty equipment ..................................................................25
6.2.2 Testing equipment using service socket ..............................25
6.2.3 Equipment diagnostics and testing via PLC .........................25
6.3 Electrical outage ......................................................................25
6.4 Cleaning process malfunctions ................................................25
6.4.1 Odours ...................................................................................25
6.4.2 Foaming .................................................................................25
6.4.3 No sludge collected in sludge bag ........................................25
7. Service
...............................................................26
7.1 Periodic service .........................................................................26
7.2 Service instructions for pumps and level switches ..................26
7.2.1 Transfer pump cleaning .........................................................26
7.2.2 Cleaning of emptying pump and sludge pump ...................27
7.2.3 Cleaning of level switches .....................................................28
Operation journal
............................................... 29
2
