Advantages Part 1

Various wastewater treatment plants operate in different manners, depending on the applied wastewater treatment technologies unlike conventional sewage treatment or a septic tank.

Waste water is treated in biological treatment plants using biological methods and micro-organisms. Currently, all biological plants operate using active sludge (also called active, operating).

Active Sludge

Active sludge comprises of waste water particles and micro-organisms, present in certain parts of the wastewater treatment plant. These microorganisms also vegetate in the natural environment; however they are most effective in biological wastewater treatment plants, i.e. when they are saturated with air and wastewater.

Concentration of microorganisms is considerable, as the conditions which the treatment plant offer ensures rapid decomposition of the waste water.

Chemical-Free Operation

Systems with active sludge are classified as intensive wastewater treatment systems. During various treatment stages, all harmful chemical materials are dissociated, therefore water is pure enough to release it into the soil or to collect it in reservoirs and re-use, e.g. for car washing, watering of plants, etc.

Biological wastewater treatment plants using active sludge enable rejection of any chemicals during the wastewater treatment process and perform a high level of wastewater treatment.

Note not all wastewater treatment plants feature such high parameters of treated water. Application of active sludge technology requires no additional filters and no other equipment (unless requested by the client or project conditions). This is a cost-effective and environmentally-friendly method.

All processes of the biological treatment (treatment of wastewater with active sludge, separation of sludge from treated wastewater and returning of sludge into the aeration reservoir where wastewater is mixed with active sludge, supplying air) happen in one reservoir. This ensures more reliable and stabilized operation.

Active sludge decomposes contaminants and is separated from treated wastewater. Problems such as disturbances of treatment equipment, outflow of active sludge, and unpleasant odour etc. are avoided. However not all wastewater treatment plants are secured from the outflow of sludge, therefore you should inquire how the competition addresses this problem, e.g. August BioPro wastewater treatment systems are equipped with funnel-shaped separation zones. Since the sludge features heavier weight, it settles at the bottom of the equipment and is returned into the treatment process or its surplus is removed. At the same time the treated water (also called “technical”) is released via a pipe installed at the top of the system – water is released to the environment or collected for further application.

Extremely Pure Water

During various biological processes (nitrification, de-nitrification, etc.) active sludge removes the nitrates, phosphorus (located in, e.g. washing powder), nitrogen (present in urine, excrement, etc.) and other materials delivered with sewerage.

Removal of materials, such as phosphorus and nitrogen is very important, as these materials can access water bodies and increase the growth of plants, thus reducing the volume of oxygen in water bodies. This usually results in reduction of fish and other wildlife in lakes and rivers (e.g. they suffocate more often in winter, as intensive greenery absorbs oxygen), thus disturbing the balance in water bodies.

Not all wastewater treatment plants are capable of cleaning wastewater from nitrogen, phosphorus and other materials, as they are not equipped with nitrification, de-nitrification and other zones, therefore they may need filters or other auxiliary equipment, imposing additional costs. Thus wastewater treatment plants with active sludge are convenient and efficient, as the treated wastewater is turned into odourless and colourless water, free from materials harmful to the environment.

Single refill

Active sludge is poured into the newly mounted wastewater treatment plant, before letting in the wastewater. Active sludge is delivered from ready operating plants. This is a single action, as the sludge is nourished and reproduces using wastewater; no additional refill is needed. Full efficiency of the wastewater treatment is obtained instantly.