To sum up, pool floc works well for clearing cloudy pool water quickly however it will require you to manually vacuum the pool several times. It usually takes 8-16 hours for floc to sink to the bottom of the pool ready for vacuuming. What is this?
Let Pool Flocculant Sit for 8 Hours
Turn off your pump and allow the pool to sit for at least eight hours. This is easiest to do overnight.
Finely dispersed solids (colloids) suspended in wastewaters are stabilized by negative electric charges on their surfaces, causing them to repel each other. Since this prevents these charged particles from colliding to form larger masses, called flocs, they do not settle.
Flocculation refers to suspended particles in the water that give it a murky appearance. Flocculants are substances that help clear the cloudiness and restore the clarity to your swimming pool water. You can use too much floc, however.
Allow the flocking chemical to bind the particles that are suspended in the water. Once bound, they will sink to the bottom of the pool. This action may take between 24 and 36 hours depending upon the amount of chemical used and how bad the water was clouded.
Flocculant works very quickly and clears cloudy pool water by clumping small particles together and dropping them to the bottom of the pool to be vacuumed out. For getting rid of little green algae quickly, I recommend using floc with the following steps. Raise the water level in your pool.
Run your filter until the water is clear
Once the clarifier has been added to your pool, turn on the pool filter and run it 24/7 until the cloudiness is gone. This can take two to three days, but swimming in the pool at this time is safe after about 20 minutes.
The trick to getting floc out of a pool is to vacuum VERY slowly so you don't stir up the debris. If you move too fast, you'll create currents in the water which will disperse all that stuff sitting at the bottom. If you have disturbed the debris at the bottom, take a break to allow it to settle on the bottom again.
You can even vacuum twice to be sure to catch everything. Usually while vacuuming to 'Waste', you can run the garden hose into the pool to keep the water level the same. But when vacuuming after floccing, we recommend topping the water up afterwards, as the inflow of water will also disturb the debris at the bottom.
How will rain affect the process? Answer: Once the floccing agent has been added with the water circulating for a few hours, turn the pump off to allow everything to settle to the bottom (usually 24 hours). Rain will not affect this process at all.
Excess organic load can be remedied by reducing the waste-activated sludge rate by an amount less than 10 percent per day, to return to proper loading parameters and increase the returned activated sludge rates. About a 30 percent level of settled solids in the clarifier should be established and maintained.
Sand filters can more readily recover from a proper floc treatment, but long-term it will ruin those too. One of the few times TFP recommended the use of a flocculent was to clear a pool of ashes from a wildfire. We advise to exhaust every other possibility before using a flocculant.
Pin floc occurs most commonly at starvation conditions -- a very low F/M and long sludge age. Chronic toxicity can also cause a pin floc condition. Free floating filaments can, at times, cause a dispersed growth problem.
The main difference between the flocculant and pool clarifier is where the clumped particles go. Clarifier keeps the bounded matter at the top of the pool to be grabbed by the pool filter. Meanwhile, pool floc snags the particles, assembles them, and then sinks them to the bottom of the surface.
Do you use Clarifier in conjunction with Flocculant? Flocculant can be used after clarifier. However, using too much of any product can work against the clarifying process.
Fine debris such as dust, sand and dirt is carried into a pool on the feet of swimmers or on the breeze. While a skimmer removes larger items such as leaves or insects, fine matter drifts to the bottom of the pool and forms a layer of sediment.
So instead of running your pump continuously until your water is clear, you add the floc to your pool usually through a skimmer, run your pump for a couple of hours, shut the pump off for 12-24 hours allowing everything to settle to the bottom.
Use HTH Drop Out Flocculant when chlorine levels are between 1 – 4 ppm and the water is balanced. Distribute the flocculant evenly over the entire pool surface. Keep the pump running for two hours and then turn off. Allow the particles to settle to the pool bottom overnight and then vacuum debris to waste.
The addition of a flocculant and an algaecide will further enhance the quality of your water. Sparkle Water Clarifier is used to clarify your water by collecting all the fine particles that normally pass through the filter and clumping them together to enable them to get caught in the filter.
Chlorine is still one of the most effective killers of algae so doing a super-chlorination of 10-20 ppm of chlorine can go a long way towards wiping out the algae. Liquid chlorine is an ideal shock for algae because it is fast acting and does not add cyanuric acid (CYA) or calcium to the water.
The last step of primary treatment involves sedimentation, which causes the physical settling of matter.
Answer. Anaerobic decomposition starts after the colour of the sewage turns black as the dissolved oxygen content reaches minimum value. The dark grey/brown and black colour is due to the formation of sulphide (produced under anaerobic conditions) reaction with the metals present in sewage.
Pin floc leads to a more turbid effluent. It is most commonly the result of exceedingly high sludge age. Reducing sludge age often minimizes the occurrences of pin floc. Algae growth within secondary clarifiers is common for uncovered secondary clarifiers.