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to develop high-quality treatment facilities require a high scientific, technical and engineering potential, a modern production base, an excellent knowledge of all the subtleties of modern technologies of treatment of domestic sewage.
In a large family of local treatment facilities with low productivity, intended to serve one house, one family, not easy to find those that meet all the requirements of the consumer and the law.And not because engineers and designers do not cope well with their work, but because of objective, a few, but it is difficult to actionable causes.
first reason - due to the fact that the small treatment plant performance, and therefore a limited amount of very sensitive to the uneven revenue flows.As a result, volley discharge of sewage from several plumbing outlets such as bath, Jacuzzi and so on. N., May overflow receiving tank;not passed a full cycle cleaning water with impurities will be displaced from the working chamber and as a r
second reason - is that domestic wastewater entering the treatment plant from time to time added "portion" of household chemicals out of the washing machine and dishwasher, grease and food waste from the kitchen, etc.Discharge of chemicals and other corrosive substances can not affect the vital activity of the bacteria responsible for the biochemical processes of wastewater treatment, and hence its quality.
When excessive concentration of chemical activity of microorganisms can be fully depressed and the treatment plant will stop working.And to restore its normal functioning may take more than one week.
third reason - limited time passing through the stage of wastewater treatment in the working chambers of the treatment plant.The complete cleaning cycle includes a plurality of the biochemical processes taking place at different speeds and in different conditions.Combine them all in one compact unit extremely difficult.
fact, the developer of the treatment plant has a choice: either to increase as much as possible, its volume, thus mitigating the impact of all three adverse factors discussed above, but sacrificing the convenience of the customer and the ability to use relatively expensive modern materials, or develop, to scrutinizeand apply new, more technology intensive biological treatment of domestic wastewater.The trade-off, as you can see, is inevitable.
By way of creation of large local treatment facilities based on traditional, well-established manufacturers of advanced technology went septic tanks, consisting of several chambers in which are successively received drains mechanical cleaning stage, anaerobic (oxygen-free) fermentation in the digester and the aerobic oxidation in the biofilter.
They realized all the biochemical processes of wastewater treatment, including nitrification / denitrification, without any complex technical solutions.However, such treatment facilities can not be called perfect: their large dimensions create great inconvenience to the owner, and the housing material, whether concrete or steel is subject to corrosion in aggressive environments, which are the drains.Chemical-resistant housing made of polyethylene, in turn, are not sufficiently reliable and are subject to surfacing with increasing groundwater levels.
genuine revolution in the field of wastewater treatment stations made deep biological treatment with forced aeration - devices are small but extremely efficient and durable.
The basis of their work laid the oxidation of wastewater aerobic bacteria, which have significantly intensified by feeding into the working chamber of small air bubbles.The water outlet is so clean that it can be discharged to the relief or used for irrigation