Method of removing sediments from koi culture water bodies

    In the process of koi farming, we often find that the water becomes cloudy, today I will talk to you about the method of removing sediments from the water.

Floaters and sediments

    The water in a pond where koi are kept can become less transparent due to the entry of koi feces or algae as well as other small particles of dust. These causes of clouding include both visible dirt and dirt so small that it cannot be seen by the naked eye. At night, you can try to a strong flashlight to irradiate the water in the pool, at this time that can be seen through the sharp one-way light floating particles in the water, a phenomenon known as "TyndallPhenomenon"; pool water that appears to be highly transparent during the day is actually still floating with solids that are invisible to the naked eye. Solids floating in the water These substances are called suspended substances, or "suspended substances", because they are not visible to the eye and are not soluble in water, but are suspended and insoluble.SS, or floating matter, etc. To describe it in more detail, the particle size is given by1nm (nm=1/1,000,000mm) ~ 1μm (μm=1/1,000mm) The extent of this is called colloid.

Methods of removing solids

    The way to remove solids is to remove small solids by making them into larger solids. However, this can only be done by using a coagulant, and such a water treatment method requires a high degree of skill and equipment, which is not necessary for koi breeding. To remove large organic matter from water, biofilm can be used.(biofilm filtration), rapid filtration method, etc. to remove.

Activated sludge method at the sewage treatment site

    When you visit the activated sludge process at the sewage treatment plant, you can see that the surface of the coffee-colored sewage tanks is covered by air blown out from the aeration pipes.(oxygen (chemistry)), constantly bubbling upwards. This type of activated sludge method is a type of biological treatment, and these come with their standard method and quite a lot of variations. For solids in a pool, there is a natural settling due to their size and weight.(or known as gravity precipitation)and methods of forced sedimentation. Sinks for settling these solids are called sedimentation basins or settling tanks. The sedimentation method for purifying koi water is more or less the same as the sedimentation tanks used in sewers, etc., but the construction is not exactly the same because the flow rate of water and the size of the sediment are much smaller. Organic matter dissolved in water can be categorized into three types of water treatment methods: good, normal, and poor; biofilm method.(contact oxidation)Evaluated as ordinary, activated carbon absorption and ozone method evaluated as good.

Sludge and activated sludge

    Many people mistake the meaning of sludge and activated sludge as being the same. In fact, the two mean different things. Sludge refers to the turbid substances in water, the mud formed after natural precipitation means. Activated sludge is a man-made strong aeration treatment of things under the turbid water for a long time to the air blowing, after stopping the aeration, the coagulation of sludge will be precipitated, so the sludge is called activated sludge. In other words, activated sludge is not sludge, and it corresponds to the biochemical oxygen demand in water.(BDD)Activated sludge is a collection of microorganisms that contain hydrogen, phosphorus, and other nutrients needed by aerobic bacteria, protozoa, and metazoans. The activated sludge, which is a collection of microorganisms, is called activated sludge method, and it is used for water treatment. This activated sludge method requires a high level of technology, so even in koi breeding, there is a way to imitate the activated sludge method, but it is different from this activated sludge method.