【Odor and BOD Measures for Food Factories】A Wastewater Improvement Step to Verify in the Existing Pit Before Investing Tens of Millions of Yen in Equipment

At food factories, odors generated from wastewater pits and high BOD levels can become issues. Since installing new wastewater treatment equipment or carrying out large-scale modifications may cost tens of millions of yen, it is important to first understand the condition of the existing equipment and the current wastewater conditions before considering capital investment.

This article explains the points that should be checked in the existing pit regarding odor and BOD issues at food factories, as well as a method for confirming changes in wastewater through a chemical agent test.

Table of Contents

• Check the Condition of the Existing Pit Before Taking Measures
• TS1502C Test Data for Food Wastewater
• Points to Consider When Assessing Test Results
• What TS COATING (THAILAND) CO., LTD Can Propose
• FAQ
• Terms to Know

■ Check the Condition of the Existing Pit Before Taking Measures

In wastewater pits at food factories, not only odors and BOD levels but also oil, stickiness, waste, and sediment may become problems. Since the conditions vary depending on the manufacturing process, type of wastewater, and wastewater volume, it is important to first identify the main issue in your own pit when considering countermeasures.

When conducting a chemical agent test, record the wastewater volume, oil, stickiness, waste, and sediment, in addition to the odor and BOD level before adding the agent. In particular, using the same evaluation method for odor before and after the test makes it easier to compare changes.

By recording these initial conditions, you can confirm what changed and to what extent after adding the chemical agent and use the results as information for considering subsequent measures.

■ TS1502C Test Data for Food Wastewater

TS1502C has test data from a test conducted under conditions in which it was added to food wastewater at 2,000 ppm. In this test, the BOD level and six-level odor intensity were compared before and after the addition.

Test Values When TS1502C Was Added to Food Wastewater at 2,000 ppm

Under these conditions, the BOD level changed from 432 ppm to 252 ppm, and the six-level odor intensity changed from 5 to 3.

However, these are reference data obtained from specific food wastewater and test conditions. Since actual wastewater conditions and operating conditions vary by factory, when considering application at your own factory, it is necessary to conduct a test in the existing pit and confirm the actual changes.

■ Points to Consider When Assessing Test Results

In a chemical agent test, the assessment should not be based only on whether the value decreased once. The extent and continuity of the change should also be considered.

When changes in the BOD level or odor are observed, it is important to confirm whether the same trend continues under normal operating conditions. As necessary, oil, stickiness, waste, sediment, and other items recorded before the test should also be compared.

Based on these results, you can determine whether to continue considering chemical agent treatment in the existing pit or whether equipment-related measures are required.

■ What TS COATING (THAILAND) CO., LTD Can Propose

TS COATING (THAILAND) CO., LTD handles TS1502C as an odor-reducing agent for food wastewater pits.

Rather than immediately deciding to install new wastewater treatment equipment or carry out large-scale modifications, the company proposes first using the existing pit to conduct a chemical agent test with the actual wastewater.

By comparing the results obtained at the site with the reference test data, the results can be used as information when considering future wastewater measures.

If it is difficult to determine whether testing is possible under your wastewater conditions or how the effects should be confirmed, please contact us in advance.

※For more details, please download the materials or contact us using the form below.

■ FAQ

Q1: Can measures for odor and BOD be considered without modifying the wastewater treatment equipment?
A1: Yes. A chemical agent test can be conducted using the existing pit to confirm what changes are observed in the actual wastewater. The results can be used as information when considering capital investment and future measures.

Q2: Does TS1502C have test data for food wastewater?
A2: Yes. Under conditions in which it was added to food wastewater at 2,000 ppm, reference data showed that the BOD level changed from 432 ppm to 252 ppm and the six-level odor intensity changed from 5 to 3.

Q3: Will the same results as the reference data be obtained?
A3: The same results are not guaranteed. Since wastewater conditions and operating conditions vary by factory, it is important to conduct a test in the actual existing pit and confirm the changes under your own conditions.

■ Terms to Know

• BOD
  A water quality indicator showing the amount of oxygen required by microorganisms to break down organic matter in water. It is used to understand the pollution load caused by organic matter in wastewater.
• TS1502C
  An odor-reducing agent for food wastewater pits.
• Six-level odor intensity
  A method of assessing odor strength in stages.
• 2,000 ppm
  The TS1502C addition condition used in the food wastewater test presented in this article.
• Food wastewater pit
  Equipment used to temporarily store wastewater discharged from a food factory.

※For more details, please download the materials or contact us using the form below.