Envirotect Water and Wastewater Engineering and Consultants

Technologies We Specialize In

Activated Sludge
Activated Sludge

The activated sludge process was developed in England in 1914 and was so named because it involved the production of an activated mass of microorganisms capable of aerobically stabilizing the organic content of a waste. Activated sludge is probably the most versatile of the biological treatment processes capable of producing an effluent with any desired BOD. The process has thus found wide application among domestic wastewater and industrial wastewater treatment.
Like the trickling filter, activated sludge is a biological contact process where bacteria, fungi, protozoa and small organisms such as rotifers and nematode worms are commonly found. The bacteria are the most important group of microorganisms for they are the ones responsible for the structural and functional activity of the activated sludge floc. All types of bacteria make up activated sludge. The predominate type of bacteria present will be determined by the nature of the organic substances in the wastewater, the mode of operation of the plant, and the environmental conditions present for the organisms in the process.

Membrane Bioreactors

An MBBR contains thousands of polyethylene biofilm carriers operating in mixed motion within an aerated wastewater treatment process. Every biofilm carrier adds productivity via the provision of an active surface area sustaining bacteria within protected cells. It is this high-density population of bacteria that achieves high-rate biodegradation productivity within the system.

Phosphorus Recovery
Phosphorus Recovery

The pellet reactor, installed in new or existing wastewater treatment facilities, breaks the phosphorus-eutrophication cycle. (Conventional technology removes P from a point source only to transfer it to a non-point source.) The Procorp pellet reactor recovers phosphorus as a renewable byproduct - closing the phosphorus loop in a cost effective, sustainable manner. Bottom line: Procorp pellet reactor phosphorus removal reduces costs while improving surface water quality as shown below.

Membrane Technology
Membrane Bioreactors

Membrane Bioreactors (MBRs) are a water and wastewater treatment technology, combining a process microfiltration/ultrafiltration with a suspended growth bioreactor. All commercial MBR processes available today utilize the membrane as a filter, rejecting the solid materials which are developed by the biological process, thus resulting in a clarified and disinfected product effluent.
The three main configurations of MBR used for water and wastewater treatment today are hollow fiber, flat sheet and multi tube.
MBRs are increasingly becoming the technology of choice for water and wastewater applications.
MBRs are now implemented in more than 200 countries and global market growth rates of between 11.5% and 13% are regularly reported in market analysis reports.
Confidence in the process appears to be increasing as the number and size of reference installatio

Anaerobic Digester
Anaerobic Digesters

Anaerobic digestion is preferred to reduce the high organic loading of primary sludge because of the rapid growth of the biomass that would ensue if the sludge were treated aerobically. Anaerobic decomposition creates considerably less biomass than the aerobic process. Anaerobic digestion converts as much of the sludge as possible to end products, such as, liquid and gases while producing as little residual biomass as possible.

PLC Scada

SCADA (supervisory control and data acquisition) is a type of industrial control system. Industrial control systems are computer controlled systems that monitor and control industrial processes that exist in the physical world. SCADA systems historically distinguish themselves from other ICS systems by being large scale processes that can include multiple sites, and large distances.
HMI is usually linked to the SCADA system's databases and software programs, to provide trending, diagnostic data, and management information such as scheduled maintenance procedures, logistic information, detailed schematics for a particular sensor or machine, and expert-system troubleshooting guides