Mixing method for big amount of wastewater

Published on by in Technology

Hi. Good day everyone

 We are planning to design a wastewater treatment plant in which a water stream of  72 cubic meters/hr containing grease (non-soluble) and small Iron Particles enters.

The process consists of 1 ozonation unit with oxygen inlet, a powerful mixer, a recirculation pump which helps better oxygen dissolution and inline injection.

Would anybody help me with choosing the proper mixing method for such a process. Please bear in mind that the cost of the instrument, Energy consumption, and maintenance is very important.

Thanks for your time and consideration.

A.Reyhan

Taxonomy

5 Answers

  2. The first error in most WWTP is centralizing the waste. Decentralizing at the source treated there costs a lot less, allows for 100% pathogen and toxin free water. Not using chlorine which never cleans all the pathogens. Microbial treatment still #1 in the industry. After 40 year of monthly testing zero pathogens found clears the way for 100% recycled potable  water.  Science fiction of world water shortage crisis gone. Along with food shortages and plastic becoming part of the ocean.

    1 Comment

    1. one last item. There is no such thing as NON soluble grease.  Just a degree of difficulty in the microbiological processing world.  This technology is called bioremediation.

  3. Dear Alireza:

    There is a wonderful biological solution for Fats, Oils and Grease. We have used it in a number of countries in various situations for about 20 years. This product is 100% organic and biodegradable. When used in conjunction with other technologies it keeps the insides of pioes and machinery clean and there is never any malodour at all.

    Please see our web site.   www.biophysics-research.net

    Email: pettman@soleco-technology.com

    Stay safe,

    Hugh.

    1 Comment

    1. Dear Mr.Pettman 

      Hi. Thanks for your helping info and brochures. Actually, the amount of non-soluble oil in the stream is less than 2%. Can the "SOLUTEK" material help to separate oil from water and cut the oil scrubbing costs? if positive what happens to the leftovers? do the leftovers become biodegradable too after the reaction with oil? 

      Thanks.

  4. Dear Alireza,

    There are many options that you can use, but we will need more information to help you.

    A more detailed explanation on the designed process and parameters to treat are needed (volumes, concentrations, tank geometry) to you can find the best option.

    You could use from venturi,  fine bubble diffusers, mechanical mixers, jet mixers and others, but it will depend on many parameters and data based on your design. 

    One of the more economic treatment is the biologic one and I recommend the MBBR, but if you have no enough area you could use any AOP, and I recommend ozonation as one of the best methods. We could use supplying some devices, MBBR media or even any design for this interesting project.

    Even you could use an hybrid system biologic-AOP depending on many factors.

    Then, more information is needed.

    Regards,

    Orlando D. Gutiérrez Coronado

    1 Comment

    1. Dear Mr. Coronado 

      Hi. At present, there are no storage tanks. Its a stream of waste that we have to calculate the storage tank as the source of the reservoir and also point to start the process. The mentioned effluent has iron particles with pH=8 to 8.5. Yet there is no exact analysis. We are waiting for the samples. About the grease, I should clarify that it`s not water soluble oil yet we can scrub it off from the top of the storage or process tank. About the Iron particles, we are planning to do AOP due to oxidize the particles.

      I will publish the waste analysis ASAP and give you more details.

      Again thanks for your kind attention.

      Regards. A.Reyhan

      1 Comment reply

      1. Dear Alireza,

        Thanks for your update.

        I will wait for your update with more info including the description of the process that generates the wastewater, important lab analysis and any other importand comment you considere to help you.

        Regards,

        Orlando D. Gutiérrez Coronado

  5. Hi Alireza,

    the selection of the mixing system needs more information especially about the size of the tank, the TSS-concentration, the shape of the tank and not only the volume per hour of waste water, because the efficiency of the mixing system is depending on the viscosity, the TSS, the shape of the tank, the type of the inlet and type of the outlet to use also the energy entering for mxing for example, etc. .

    If you send me more information about the application than I could help you with the design and maybe a good option with OLOID as mixing system to safe energy and do a proper mixing in the tank.

    Please send it to my Email: eric.schieblich@inversions-technik.ch

    All the best

    Eric Schieblich