Skip to main content

If your Sewage Treatment Plant blower stop working then your Sewage Treatment Plant can work without any problem?

This question is generally asked to test your basic knowledge about the operation of machinery as we all know that if onboard STP is of anaerobic type then the microorganism break down biodegradable material in the absence of oxygen, but if it is of aerobic type then definitely STP will not work because Aerobic digestion is a bacterial process occurring in the presence of oxygen.

If, however, there is insufficient oxygen for these bacteria then alternative bacteria dominate. These Anaerobic Bacteria produce Hydrogen Sulphide, Methane and Ammonia. These gasses are either highly toxic or flammable or both. In particular, Hydrogen Sulphide is toxic to humans in concentrations down to 10ppm and its flammable vapours are heavier than air so may build up in lethal pockets in enclosed spaces.

So, if the blower stops working the aerobic bacteria may die and it will take a longer time to regenerate.


Comments

  1. or a term very similar to this, and will have a very simple model of switching from blower to vacuum, usually by means of a conveniently placed lever. electric leaf blower

    ReplyDelete
  2. You have a good point here!I totally agree with what you have said!!Thanks for sharing your views...hope more people will read this article!!! Motiva Singapore

    ReplyDelete
  3. treatment is subject to incorporates, the sort of the malignant growth, the stage or how far the disease has spread, the age of the patient, their wellbeing status, and numerous other individual attributes of the patient. where to buy cbd oil in kansas city

    ReplyDelete
  4. Profit primarily prime quality items -- you can understand them all within: Sollift

    ReplyDelete

Post a Comment

Popular posts from this blog

Load Line & Why it is Important

Merchant ships have a marking on their hull know as the Plimsoll line or the Plimsoll mark, which indicates the limit until which ships can be loaded with enough cargo, internationally, the Plimsoll line on a ship is officially referred to as the international load line. Every type of ship has a different level of floating and the Plimsoll line on a ship generally varies from one vessel to another.  All vessels of 24 meters and more are required to have this Load line marking at the centre position of the length of summer load water line. There are two types of Load line markings:- Standard Load Line marking – This is applicable to all types of vessels. Timber Load Line Markings – This is applicable to vessels carrying timber cargo. These marks shall be punched on the surface of the hull making it visible even if the ship side paint fades out. The marks shall again be painted with white or yellow colour on a dark background/black on a light background.  The comp

Difference Between A, B & C-Class Divisions?

IMO Symbol A Class Division  IMO Symbol B Class Division  SOLAS has tables for structural fire protection requirement of bulkheads and decks. The requirements depend on the spaces in question and are different for passenger ships and cargo ships. The Administration has required a test of a prototype bulkhead or deck in accordance with the Fire Test Procedures Code to ensure that it meets the above requirements for integrity and temperature rise. Types of Divisions: "A" Class "B" Class "C" Class "A" Class: "A" class divisions are those divisions formed by bulkheads and decks which comply with the following criteria: They are constructed of steel or equivalent material They are suitably stiffened They are constructed as to be capable of preventing the passage of smoke and flame to the end of the one-hour standard fire test. they are insulated with approved non-combustible materials such that the average tempera

Gravity Disc

Oils containing water can only be de-watered in a perfect manner if the bowl is accurately adjusted to the difference in densities of oil and water. The gravity disc with proper inner diameter i.e. with the diameter that corresponds to the difference in densities of the oil-water mixture to be treated should, therefore, be inserted in the bowl, This disc can be chosen from the set of disc provided with the separator. The inner diameter of the disc to be chosen can be determined by:  Calculation   Experiment The general rule is : Small diameter gravity disc when treating heavy oil Large diameter regulating ring when treating light oil Determining the size of gravity disc by calculation: For a given separating temperature, the inner diameter of the gravity disc and if the desired density of the oil can be determined from the diagram, provided that the density of the oil at a temperature ranging 15℃ and 90℃ is known. For example; Given: Density of oil at 20℃            ρ oil