Sewer Discharges Of Industrial Wastewater

Evaluate the Industrial Wastewater 

In this paper, we continue our series on environmental engineering.  Specifically, we discuss acceptance of your plant’s sewer discharge by the off-site treatment plant.  Conversely, this is not about discharges to surface waters, on-site treatment facilities, or ground water.

How do you evaluate your industrial wastewater?  Firstly, perform a mass balance calculation.  To explain, identify and quantify all chemicals and materials.  Basically, mass balance means what goes in must go out.  Secondly, list the chemical properties.  Finally, determine if the discharge is acceptable. And that is very important.  Why?  Because the U.S. Environmental Protection Agency (EPA, www.epa.gov) requires it.  But the County usually enforces it.  How? By using a Sewer Use Ordinance. 

Why Worry about Sewer Discharges of Industrial Wastewater? 

There are good reasons to worry about your plant’s sewer discharge.  For starters, the discharge could be toxic.  As a result, it could kill micro-organisms at the treatment plant.  What’s more, the discharge might be flammable or explosive.  As a result, it could cause a fire or explosion at the plant.  Additionally, it could cause the plant’s discharge to pollute surface or ground water.  Finally, it could violate the Sewer Use Ordinance.  Consequently, your plant could get bad press and be fined.

Will They Know it is from Your Facility? 

The County can do sewer discharge tracing.  First, they inspect and test the wastewater at lift stations.  Second, they use the results to identify one lift station causing the problem.  Third, they determine which plants discharge to that lift station.  Fourth, they decide which plant is the most likely suspect.  Fourth, they knock on your door, ask questions, and test your discharge.  It is not that difficult.

Clean It Up 

So, before the County comes knocking, see if you need to clean up your wastewater.  First, read the Ordinance closely.  Second, determine if  banned chemicals could be in your discharge.  If so, test the discharge.  If the results confirm a problem, you are dead in the water, right?  No, now explore the following treatment options:

  • Change the process 
  • Substitute chemicals 
  • Remove hazardous wastes 
  • Pretreat the wastewater
  • Get input from environmental engineer or County 

Next, run a bench scale test on the wastewater after treatment.  Good results mean start the treatment.  Bad results mean you adjust the treatment, retest, and then start the treatment.

Environmental Safety ConsultantsSo, there is a discussion of the environmental engineering related to sewer discharges of industrial wastewater! If you need any assistance, ESC (www.escflorida.com) is here. We are a Florida licensed environmental engineering firm with a P.E. on staff. We have the credentials and experience to help you with your industrial wastewater sewer discharge needs. We are just a telephone call (800-226-1735) or an e-mail away (escinc@verizon.net). Contact us today!

Environmental Engineering for NPDES Stormwater Pollution Prevention Plan (SWPPP)

Background 

So far, we have provided several papers on or related to environmental engineering, which is provided stormwater pollution by environmental consulting firms like ours, Environmental Safety Consultants, Inc. (ESC). We provided information on environmental permits, then went into an overview of environmental engineering. Next, we addressed industrial wastewater and, finally, air emissions control provided by an air engineer. There was also a paper discussing Florida NPDES (National Pollutant Discharge Elimination System) Industrial Stormwater requirements. Now we will discuss the Stormwater Pollution Prevention Plan (SWPPP).

Stormwater Pollution Prevention Plan (SWPPP)

The current paper will discuss environmental engineering required for an SWPPP (Stormwater Pollution Prevention Plan). The regulatory requirements are provided by both the U.S. EPA (Environmental Protection Agency, www.epa.gov) and the FDEP (Florida Department of Environmental Protection, www.floridadep.gov). The requirements discussed herein primarily cover manufacturing and industrial facilities with SIC (Standard Industrial Classification) Codes 21 – 39 with specific exposure to stormwater. 

Objective 

The objective of the Stormwater Pollution Prevention Plan is self-evident from its name. That is, the SWPPP is prepared by an environmental engineer to prevent pollution of stormwater so it does not discharge and impact receiving waters. Why? Because if it does, it can impair the biological organisms and public health. 

Components of Stormwater Pollution Prevention Plan

In preparing the SWPPP, the environmental engineer first identifies the facility and describes its operations, location, and receiving surface waters. Then, information and data are gathered in the following areas to assess the facility’s impact to stormwater: 

  • Topography, runoff, & discharge point(s) 
  • Material inventory, quantities, & exposure 
  • Significant spills or leaks last three years 
  • Non-stormwater discharges
  • Pollutant sources & specific parameters 
  • Best Management Practices (BMPs) to control pollutants 

Based on the results of the preceding, the environmental engineer discusses the findings with the client, then prepares the SWPPP and submits it for review. It is important that the client be able to implement and use the plan to reduce or eliminate pollutants in the facility’s stormwater runoff. 

Implementation 

The client’s management must endorse the SWPPP and sign it as documentation. A Pollution Prevention Team is formed and identified in the SWPPP. Team members and other personnel receive training. Resources are committed to attain the plan’s objective by implementing the BMPs selected. Visual monitoring of the stormwater discharge is required quarterly and laboratory analysis may be required during the second and fourth years of the five year permit. All records are kept in the SWPPP and, thus, it is a living document. 

Environmental Safety ConsultantsSo there is a discussion of the preparation of an SWPPP by an environmental engineer! If you need any assistance, Environmental Safety Consultants (www.escflorida.com) is here. We are a Florida licensed environmental consulting and Florida licensed environmental engineering firm with a P.E. on staff. We have the credentials and experience to help you with your SWPPP. We are just a telephone call (800- 226-1735) or an e-mail away (escinc@verizon.net). Contact us today!