超滤设备常见故障发生的原因及排除方法
Causes and troubleshooting of common faults in ultrafiltration equipment
1、进水压力低或进水量不足
1. Low influent pressure or insufficient intake of water
可能原因:超滤预处理堵塞、超滤进水泵压力不够、管径偏小、阀门故障
Possible reasons: Ultrafiltration pretreatment blockage, insufficient pressure of ultrafiltration intake pump, smaller pipe diameter, and valve failure.
排除手段:清洗或更换过滤材料或装置、更换更大的增压泵、换管径更大的管、更换阀门
Elimination means: cleaning or replacing filter materials or devices, replacing larger booster pumps, replacing pipes with larger diameters, and replacing valves.
2、产水量下降超过初始稳定产水量的20%
2. Water production decreased by more than 20% of the initial stable yield.
可能原因:超滤膜被污染、跨膜压差太小、原液水质恶化、原液温度降低、预处理供水不足、维护不当
Possible reasons: ultrafiltration membrane is polluted, transmembrane pressure difference is too small, the quality of raw water is deteriorated, the temperature of raw fluid is reduced, pretreatment is insufficient, and maintenance is improper.
排除手段:进行化学清洗和加药杀菌、增大进水压力,但不得超过0.3Mpa.且TMP小于0.2Mpa、改善前处理,使之达到超滤进水要求、升高原液温度或加大进水压力但不得超过0.3Mpa.且TMP小于0.2Mpa、检查及改进预处理、加强维护,并更换损坏设备
Elimination means: chemical cleaning and adding medicine and sterilization, increase water pressure, but not more than 0.3Mpa. and TMP less than 0.2Mpa, improve the pretreatment, make it meet the requirements of ultrafiltration, increase the temperature of the raw liquid or increase the pressure of water but not more than 0.3Mpa. and TMP less than 0.2Mpa, check and improve the pretreatment, strengthen maintenance, and replace. Damage equipment
3、压力表压力突然升高
3. A sudden increase in pressure gauge pressure
可能原因:气动蝶阀失灵
Possible reasons: the failure of pneumatic butterfly valve
排除手段:检查气动蝶阀或控制电路的故障
Elimination means: check the malfunction of pneumatic butterfly valve or control circuit.