Cheap Koi Pond Filters

unusual phenomenon

Analysis and diagnosis

solutions

The motor is noisy

The bearing is damaged, the bearing is not lubricated well, and the pump is blocked

Disassembly and maintenance

Large fan vibration

The bearing is damaged, the bearing is not lubricated, and the transmission belt is loose

Disassemble and repair, replace the transmission belt

Motor overheated

The bearing is damaged, the bearing is not lubricated, the motor is overloaded

Disassembly and maintenance

Pump leakage

Poor sealing and corrosion

Surface exposed wing wheel blockage

Poor lifting, so that the aeration tank is deposited, MLSS is extremely low

Clean and remove debris

Surface aerator dehydration

Surface exposure machine is immersed too deeply, MLSS is normal, DO is low

Adjust the position of the wing wheel

The surface aeration wing wheel water jump becomes smaller, the wing wheel is submerged too deeply, the MLSS is normal, the DO is low, the bubbles in the diffuse air aeration system are not uniformly turned, and there are clusters of bubbles rising

Air distribution pipe, aerator blocked or cracked

Repair cleaning cloth air pipe and aerator

The pH of the effluent drops

Anaerobic treatment load is too high, organic acid accumulation

Reduce load

Low load in aerobic treatment, nitrification of ammonia nitrogen

Increase load

There is a layer of floating mud on the surface of the secondary settling tank, which is poisoned by the sludge; the sludge is expanded

Sludge rejuvenation

Elevated ESS

Insufficient mud discharge, MLSS is too high

See expansion countermeasures

Mud in the secondary sedimentation tank, denitrification or corruption

Increase mud discharge

Turbid effluent

Load is too low, sludge cohesion is poor, sludge deflocculate

Increase nutrition

Sludge poisoning

Stop water ingress and rejuvenate sludge

The filter medium of the subsequent fast filter is contaminated, activated carbon and the load is too high

Increase recoil

Incomplete decomposition of organic matter

Reduce load

The chromaticity of the effluent rises

Sludge deflocculation, high influent color

Improve sludge shape

SV rise

Sludge expansion, or insufficient sludge discharge

Refer to expansion countermeasures

MLSS drops

The return pump is blocked or the wing wheel is blocked, the sludge is expanded or poisoned; a large amount of sludge is lost

Take corresponding measures according to the actual situation

High ash content of sludge, greater than 50%

Poor operation of grit tank and primary sedimentation tank; too much mud and sand in the influent water, or too high salinity

Improve the operation status of grit tank and dust removal

Low DO of aeration tank

The influent is too thick and the load is too high; the influent is too much inorganic reducing substances

Reduce load

Blocked aerator

Disassembly and repair