Too much moisture content for sludge cake (caused by small flocs)
① Wastewater concentration gets higher?
The chemical dosing quantity and dry solid can not keep in a proper ratio when the sludge gets thicker. Then it can not form proper flocs. In this situation, decrease the sludge feeding quantity.
② PH value in a proper range?
If the PH value is too high or too low, it may result that polyacrylamide can not fully display its function. Please confirm suitable PH value range for polyacrylamide, then adjust the PH value of sludge to a suitable range. What's more, if sludge PH value decreases due to chemical use, the polyacrylamide may not fully display its function. In this situation, please decrease such chemical use?
③ High polymer flocculant solution concentration changes?
Once concentration of high polymer flocculant solution changes, the ratio balance between dry solid and its required chemical dosing quantity breaks. It results the dry solids can not form proper flocs.
If use manual dosing equipment, please confirm the dosing quantity of polyacrylamide and dilution water. If use auto dosing equipment, please confirm the setting values and actual dosing quantity are consistent.
④ Outflow of high polymer flocculant is in a proper range?
Please stop the equipment, discharge all sludge in the flocculation tank.
If run the dosing equipment in manual mode, please check pump outflow and characteristic curve are consistent. If the pump outflow is small or no outflow, please check following items.
・Is there any foreign matters blocked in the pipe?
・Is there any chemical solution in tank?
・Is there any damage to pump wearing part?
⑤ Is there any foreign matter attached to liquid level control pipe and weir?
※ If foreign matters attached to pipe and weir, it matters the sludge backflow. Then the ratio balance between dry solid and its required chemical dosing quantity breaks. As a result, the dry solids in the wastewater can not form proper flocs.In this situation, please clean the pipe completely.
For more information or enquiry, please contact Environmech Sdn. Bhd.
Contact us: http://www.environmech.com/p/contact-us.html
Website: www.Environmech.com
