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Food Industry

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The food industries’ effluent sources are Biodegradable organics, material-proteins, sugars, carbohydrates, fat or grease, suspended solids, etc. Effluent from Food industry contains high BOD, COD, oil, grease, and total suspended solids. Therefore it is necessary for Effluent Treatment Plants to maintain their COD and other parameters of their effluent to meet specifications decided by regulatory board.

For removal of these contaminants from the effluent there are three major units. Those are oil &grease trap which removes oils & grease present in the effluent by collecting the effluent and stabilizing it. There is a neutralization tank which adjusts the pH of the effluent to nearly 7. After neutralization tank the effluent passes to primary clarifier which removes the suspended solids. After the clarifier, effluent moves to biological treatment i.e. nothing but the aeration tank which allows the air bubbles to pass though effluent which in result decreases the BOD of the effluent. There is another clarifier (secondary) which removes the remaining sludge in the effluent. Then the sludge coming out from the primary clarifier is sent to sludge thickener where the sludge is thickened and sent to sludge press. Over flow from the sludge thickener is sent back to the primary clarifier. Effluent coming out from secondary clarifier is sent to the secondary effluent holding tank after which effluent is sent through the sand bed and carbon bed. The characteristics of discharge effluent vary, depending on the product manufactured, the materials used in the process, and the other process details. The typical characteristics of discharge effluent for food industries (indicative molasses based spent wash) are listed in the table below:

Sr. No. Parameter Unit Concentration range
1 Color - Yellowish
2 Odor - Light Pungent
3 Temperature ºC  
4 pH - 4.5-6.5
5 Total solid mg/lit 235-270
6 Total suspended solid mg/lit 585
7 BOD mg/lit 10000
8 COD mg/lit 20000
9 Calcium mg/lit 99-122
10 Iron mg/lit 0.21


Problems in ETP:

  • More chemical usage for neutralization
  • High temperature of the wastewaters may damage aquatic organisms
  • High volume of effluent to be handling
  • High concentration of readily decomposable organic matters
  • Presence of refractory compounds
  • High operating treatment cost
  • Low yield of biogas due to byproducts

HyCator® Reactor Systems for Food Industry

HyCa Technologies have a range of products which are environmentally safe and cost effective for effluent treatment of Food Industry. We generally suggest HyCator® reactor systems to effluent treatment plants in the following manners but it varies as per the client requirements and limitations.

The applications of HyCator® reactor at effluent treatment plant are listed below:

  1. HyCator® MBD increases the digestibility of the effluent in UASB digestor and aerator by breaking long-chain / polymeric/ refractory compounds and thus, reduce the COD and increase the Biogas production. HyCatorTH:MBD can also be installed in the inlet effluent streams (High load) / neutralization tank or recycle stream of effluent, if any.
  2. HyCator® OLM ensures the energy efficient, precise, microlevel, online mixing even at very high flows. It will help to reduce the chemicals in neutralization and subsequent processes.
  3. HyCator® DOB increases the dissolved oxygen content in aerator tanks as compared to conventional surface aerator or diffused aerator and also, increases the activity of microbes by de-flocking them. Thus results in reduction in sludge generation, hence, very less load on clarifiers and less solid disposal issues.

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