Water and Wastewater Networks

The policy of ENGINEERIK is related to the development of projects for the Water sector, respecting the basic principles for quality and sustainability of the designed infrastructure. In this way, sufficient quantity and quality of water for the needs of the population, economy and ecosystems – continuity of water supply should be ensured.


The services we provide to our clients combine strategic planning, project design and management and investor control. In this way, we make cost-effective and energy-efficient solutions.

  • Pre-investment, Conceptual and Work Design;
  • 1D and 2D network modeling, e.g. Hydra & Canalis by StudioArs, Bentley SewerGEMS and Bentley Water Hammer;
  • Modeling of pressure pipelines and analysis of the possibility of waves of high and low pressure (water hammer);
  • Adaptation to climate change and rainwater management;
  • Water Re-use.

Sewerage Systems

Providing a comprehensive analysis of the sewer system is the basis for good planning of future most profitable and necessary projects for its renovation. For this purpose should be done an analysis of:

  • Current status of the sewer network (System status)
    • Updating of the sewer network;
      • Surveying and updating the network;
      • Specifying the locations of existing overflows and facilities;
      • Bypassing problematic areas and places with external water in the sewage system.
    • Preparation of a skeletal model of the sewer network;
    • Overflows over sewage networks and determine the quantities of water for each of them and calculate the required height of the overflow edge;
    • Overflows sizing data according to the measured data from the level meters installed in them and fixing the height of every spefic overflow.
  • Pilot area
    • Selection of pilot area (s) to identify incoming water quantities;
    • Preparation of a static model of the area with dimensioning parameters in dry weather and during rain;
    • Conducting practical tests for the measurement of water quantities before and after taking optimization measures;
    • Updating the hydraulic parameters in the pilot zone model;
    • Analysis of the results for the amount of infiltrated water in the sewer;
    • Analysis of the impact of physical losses from the water pipeline on the water quantities in the sewer;
    • Assessment of required investments.
Climate adaptation and stormwater handling

NBS-Nature Based Solutions

Тhe effects of climate change rainfalls are occurring more and more frequently around the world.

In ENGINEER, we can help you to improve asset management that respond to climate change. Our experts use specialized computer modeling software to analyze the effects of the rain and to find new solutions (NBS) for sustainable system management.

Drinking water networks

Today, our society needs to understand that safe and reliable supply of drinking water 24 hours a day, seven days a week is crucial for any well-functioning society.

We at ENGINEER can help our customers choose the optimal financial and energy efficient solution based on:

  • Strategic planning;
  • Design and project management;
  • and investor control.

Providing a comprehensive analysis of the plumbing system is the basis for good planning for future most cost-effective and compelling system refurbishment projects. For this purpose should be done an analysis of:

  • Water resources
    • Water quality and water chemistry
    • Current water management and strategic planning
  • The technical condition of the external water mains, water sources and facilities;
    • Analysis of the technical condition of the facilities at water sources and pumping stations;
    • Analysis of the technical condition of the external water supply systems and facilities.
  • Current status of the water supply network;
    • Determination of total water losses;
    • Determination of physical and commercial losses in the water supply network.
    • Preparation of a skeletal model of the water supply network;
    • Comparative analysis of the hydraulic operation of the network and the data from the stimulation model;
    • Data on the collection system and water meter;
    • Activities to more accurately identify trade losses (pilot area).
    • Pilot area
      • Analysis of the possible territories for the construction of a pilot DMA (water management zone) and selection of a DMA zone;
      • Analysis of investment required for the construction of pilot / pilot DMA zones;
      • Construction of the selected area (s)
        • Achievement analysis – benefits and costs.

Develop a program for active and proactive leakage control.

  • Performing Active Leak Control (ALC);
    • Setting up pressure measurement zones and optimizing the energy consumed
    • Non-revenue water management
    • Hydraulic modeling

Drinking and Wastewater Treatment

We provide support to our customers from the stage of technology solution selection, technical solution development, through equipment specification, bid evaluation, investment process management and commissioning.

Our technical services also provide cost-effective and sustainable design and operation of natural water and wastewater treatment systems in the face of increasingly stringent external (regulatory) and internal (business) requirements.

Our clients often engage us to meet the challenges and implement projects related to:

  • Analysis of the quality of drinking and waste water;
  • Economically feasible optimization of drinking and waste water treatment plants;
  • Pre-investment, Conceptual and Detail Designing;
  • Purification of industrial “hyper” clean waters, process waters and infiltrates;
  • Reuse of water;
  • Sludge management and biogas production;
  • Asset status assessment and operational services.

Drinking water treatment

ENGINEERIK works with experienced designers and scientists to provide you with the best technical and economical solutions for treating your water.

Our key expertise covers a variety of design processes, consisting of pre-investment research, conceptual and design work, project management, tendering, and commissioning. We can help with both the construction of new facilities and the review and modernization of existing groundwater and surface water treatment facilities using conventional drinking water treatment technologies, and more specifically such as nanofiltration, reverse osmosis, ion exchange resins and others according to design conditions.

  • Water clarification facilities;
  • Water filtration equipment;
  • Water disinfection facilities;
  • Facilities for:
    • Removal of iron and manganese;
    • Removal of organic impurities in water;
    • Removal of other specific elements;
    • Water softening;
    • Water stabilization;
  • Membrane water treatment facilities:
    • Nanofiltration and Reverse Osmosis;
  • Тreatment of technological wastewater.
Drinking water treatment plant

Wastewater treatment

The commitments we make to our clients cover all stages of design, through tendering until commissioning. We can help build new systems as well as review and upgrade existing facilities for the treatment and removal of major pollutants, such as:

  • mechanical impurities;
  • fats;
  • carbon, nitrogen and phosphorus;
  • treatment for water reuse;
  • treatment of sludge, including anaerobic stabilization and sustainable disposal of sludge.

We also act as a lead consultant, taking responsibility for design, utilizing the company’s resources within our wide range of experts in various technical disciplines.


At present, sufficient techniques and good practices are in place for the design and operation of energy and resource efficient WWTPs, such as:

  • The use of the activated sludge process at sludge with small age for adsorption of colloidal and dissolved COD for more biogas (AB method)
  • Pre-treatment of sludge
  • Application of the ANAMMOX process to purify excess sewer water
  • Using the model (ASM No.1) of IWA
  • Use of high efficiency gas generators 20 → 40%
  • Improving the warming and stirring of AD and others.
  • Sludge disintegration (DWA 2009).

One interesting element of the process of optimization of work in WWTP is the introduction of sludge disintegrants in the technological scheme.

The typological method has been adopted in the literature as a criterion for the classification of cell disintegrators, reflecting their structural (macro-scale) features. Following on from this criterion, mechanical cell disintegrators can be divided into five main groups:

  • Ballistic;
  • Ultrasound;
  • Extrusive;
  • Gas decompression;
  • and electric shocks.

Cell disintegration can also be accomplished by:

  • Chemical effects;
  • Enzymatic effects;
  • and biological effects.

The various types of sludge / biomass disintegration aim to:

  • Choosing the technique for obtaining the maximum amount of product;
  • Prohibition of protein denaturation or enzyme inactivation;
  • Prevention of thermal destruction;
  • Prevention of formation of submicrometer particles;
  • Maximum speed of degradation.

Water is becoming more and more valuable resource. At ENGINEERIK, we can provide assistant analyzing the possibilities of reusing water followed by design, e.g. recharge from rainwater, wastewater treatment plants with additional water treatment and disinfection.


In order to determine the energy potential of the sludge, a link can be made between the expression of the organic matter concentration (COD) and the chemical energy contained in the substances, based on the well-founded thermodynamic concept that the energy released during a chemical reaction is determined as the amount of useful energy.

In the water sector, the transformation of sludge energy is associated with anaerobic decay. This fermentation is characterized by the fact that the end products are methane and carbon dioxide. In particular, methane cannot be further reduced and carbon dioxide oxidized, so anaerobic decay is the most complete fermentation process.

One important aspect in the process of anaerobic sludge stabilization is the energy released during anaerobic decay. Unlike the process of degradation of organic matter (from oxidative catabolism), fermentation only transforms organic matter, transferring much of the chemical energy to the methane formed. It is a known fact that:

  • 35 Nm³ of methane is obtained from 1 g of COD decomposed in meth
  • 1 m³ methane has a calorific value of about 40 MJ.

The use of sludge as an energy resource will increase the energy independence of wastewater treatment plants. The main key units that should be addressed in order to increase energy independence are:

  • Energy efficiency of WWT; 
  •  Optimizing electricity consumption by drawing energy balance and implementing energy-saving measures (paying particular attention to the biological water treatment step);
  •  Increase of the produced electricity, respectively increase of the production of pure methane, minimizing the impurities in it;
  • WWTP – from user to manufacturer.
Technology Selection

The choice of the optimal water treatment solution should be accompanied by joint studies and pilot plant deployment. This is a guarantee for all our customers that they will receive extremely reliable, resource-efficient technologies and systems.

Our clients will receive a complete analysis during the feasibility and design studies, including:

  • evaluation of the possibility of process optimization;
  • mass balance (flow, organic matter, nitrogen, solids, etc.);
  • detailed process flow diagrams (PFDs);
  • and P&ID diagrams.