Decentralized Aerobic and Anaerobic Treatment Facility

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Our Client has very concentrated wastewater which includes related parameters as follows

 

pH: 8.12                                                                               

Total Suspended Solids:  6.960 mg/lt

Ammonia, Total (as N): 610 mg/lt

Nitrate and Nitrite as N: 8.9 mg/lt

Nitrate (as N): 8 mg/lt

Nitrite (as N): 4 mg/lt

Total Kjeldahl Nitrogen: 9.140 mg/lt

Phosphorus, Total: 292 mg/lt

BOD Carbonaceous: 4.590 mg/lt

 

The wastewater source is portable toilets. For that reason, the water contains very high concentration levels. 

I would like to combine an aerobic treatment system (activated sludge/rbc/decentralized treatment facility) with an anaerobic digestor technology and provide a solution for the customer.

 

What kind of solutions could be efficient? Note that I am open to other alternative treatment solutions, as well.

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7 Answers

  1. The results shows high ammonia. Is it mainly urine collected  in Portable Toilet. Please confirm

    Rajendrakumar V Saraf, FIE, FIWWA

    Chairman

    Viraj Envirozing India Pvt. Ltd

    21, Radhakrishna, Near SBI, Paud Road

    Pune 41038

    Tel 02015433445, 9822186763

    www.virajenvirozing.com

     

     

  2. such strong wastewater must be producing immense odor the best combination will be anaerobic, anoxic & finally aerobic treatment because control of generation and emission of odors is highly essential otherwise aerobic treatment will not be effective in presence of high dissolved sulfide contents.

    Anaerobic treatment can be achieved with the help of effective biological product which we successfully established with our ABR (Anoxic Bioremediation) technology. If interested please respond

  3. The removal of nitrogen and phosphorus from wastewater has become an emerging worldwide concern because these compounds cause eutrophication in natural water.

    ammonia removal,  phosphorus  removal, activated sludge plant, extended aeration, municipal  wastewater . Nitrogen appears in  wastewater  as ammonia , ni- trite, nitrate and organic nitrogen. In a second step, nitrate is converted to gaseous nitrogen and is removed from the  wastewater .

    Nitrifying organisms are present in almost all aerobic biological treatment processes, but usually their numbers are limited, depending on the mean cell residence time (because of the threshold effect) and on the BOD5/N ratio. In most conventional activated-sludge processes, with a BOD5/N ratio of 3, the fraction of nitrifying organisms is estimated to be considerably less than 0.083, while for BOD5/N ratios of 5 to 9, the estimated percentage is between 0.054 and 0.029.

    An activated sludge process is commonly used in wastewater treatment, but it is often the case that the effluent from wastewater treatment plants has remaining phosphorus and nitrogen in the form of ammonium and/or nitrate. A post-treatment process is therefore required to remove nitrogen and phosphorus from the effluent. However, because such effluents contain only small amounts of organic compounds, a carbon source must be added to remove the nitrogen.

    The conventional methods for post-treatment denitrification often employ methanol for the removal of nitrate . Although methanol does achieve a high rate of denitrification, there are concerns about the risks posed by treatment-plant outflow containing excessive amounts of organic carbon and its flammability. In practice, wastewater treatment managers hope to minimize post-treatment operation and maintenance costs. Therefore, post-treatment technologies that will enable the use of waste materials such as municipal refuse, agro-industrial residues, and wood waste are desired. In a previous study, nitrate was successfully removal from synthetic wastewater in a bioreactor packed with wood as an organic carbon source under anoxic conditions. Interestingly, the denitrification efficiency was assumed to enhance sulfur denitrification via wood degradation by sulfate reduction

    Sulfate-reducing bacteria can use wood chips or animal manure as electron donors and carbon sources and then use various types of organic substances .The sulfate-reducing bacteria Desulfovibrio sp. CMX have been used to remove nitrogen oxide (NO) in iron/ethylenediaminetetraacetic acid (FeEDTA) solutions. Yücel et al.  reported that sulfate reduction (i.e., sulfide production) occurs in degrading wood in marine environments. Sulfate-reducing bacteria seem to play an important role in nitrogen removal with wood. On the other hand, ferrous ions generated by iron polarization are known to combine with phosphate to produce vivianite and other ferrous phosphates, and thereby remove phosphorus [8]. Till et al. demonstrated that steel wool was effective at removing nitrogen in autotrophic denitrifying bacteria. However, iron corrosion is enhanced under oxic conditions and under high nitrate conditions. For this reason, the addition of another electron donor is useful to support the corrosion resistance. We therefore hypothesized that a bioreactor packed with iron and wood could remove nitrogen and phosphorus simultaneously over a long-term operation. And indeed, our earlier study showed that both denitrification and phosphate removal occurred in a bioreactor filled with synthetic wastewater and packed with iron and wood and allowed to react over a long-term.

     

     

  4. The most economical approach would be to use the aerobic species of microbe called Archaea.  They have a ph range of 5.5 to 10.0 . (test ph first, if 12, dilute, retest, continue).  This is what they use in the Alaska state park toilets. There is no odor= no flies etc. At the end of the year the water is tested by the state labs. Results are No pathogens found, no biosolids remain, no toxic compounds of any kind . Then instead of pumping out, taking it to a state authorized dumping facility, they can pump it out into the park area forest.  The only problem is where they dump it the trees grow at a much faster and healthier rate.  Mother nature at her best.  If business minded you can hook up a bio generator to have a small amount of electricity.  Note: labs indicate potable water in reports.  But most people do not have an education to understand what potable means.  So until they are dying of thirst this cure for all of the worlds water issues will only be for educated persons.

  5. Depending on wastewater volume, location and available space you could use vertical flow constructed wetlands. Performance can also be enhanced with the introduction of earthworms.

  6. EEC has been a US Military supplier of MBBR systems with same waste for more than 20 years i.e., 10 repeat contract, if you like a quote from us we need the exact effluent requirements you have.  www.eecua.com