Sewage roll-type post-treatment constructions::Limited Liabilities Company “INECS”: a Specialized Construction Company, a manufacturer of water preparation, water treatment and water supply systems


		Sewage roll-type post-treatment constructions

Post-treatment constructions are meant for post-treatment of domestic house-hold and close to them by structure industrial sewages which have been primarily bio treated.

The operation principle is based on the use of physical-chemical and bio method of post-treatment: adsorption of diluted organic substances and adhesion of organic impurities by special loading of biomass of attached micro organisms.

There are three steps which take place in bioreactors: oxidizing of organic impurities, stabilization of biomass of attached organisms, filtering of sewages and extraction of dredges from them.

Sewages going to post-treatment after the bio treatment have the following concentrations:

No/No	Name	Concentration, mg/l
No/No	Name	On influent	on effluent
1	Dredges	15-20	3-5
2	BOD_total	15-20	3-5
3	Nitrogen ammonium NH₄₊	till 2,0	0,4
4	Nitrogen nitrates NO_3-	-	9,1
5	Nitrogen nitrites NO_2-	till 0,27	0,08
6	Phosphates PO_3-	till 9,6	0,2

SPTC are meant for operation in any climates incl. areas in the Far North.

SPTC are made of 2 types: containers of a modular type and those of a roll type.

The compounding of constructions depends on productivity of sewage treatment constructions and on transportation conditions to the place of installation.

General technical decisions

In the construction of a post-treatment block the loading of a type "Synthetic algae" is used. It is a volume light construction (a cassette) of stainless steel. The loading itself is a flexible fluffy garland, entwined into a twisted wire core of stainless wires. There are ceramic aerators for loading aeration in the lower part. The inner surface of a post-treatment block is covered with special anti-corrosive floor-polish.

The post-treatment block consists of two independent sections. That allows treating 75% of incoming sewages without reducing the treatment quality of waste water in case if one section is out of order (acc. To CHèÏ 2.04.03-85). Besides, sectioning allows making containers empty and carrying out their inspection without stopping the treatment constructions.

Compared with classic post-treatment constructions (filters with various kinds of loadings, floatation installations) SPTC with Yorsh loading have a number of advantages:

1.	In manufacture of synthetic algae the polyamide (fishing line kapron) and polyether (lavsan) materials are being used. Their advantages are chemical stability, small density and high specific surface which allows detaining the biomass well (suspended active sludge).
2.	The loading is easily accessible for visual observation and is easily regenerated under aeration ablution.
3.	High efficiency of oxygen income and of removal of metabolism products.
4.	Simple principle of operation, current repair with low costs.

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	Modular treatment constructions
	Roll-type treatment constructions
	Sewers post-treatment constructions
	Rainfall treatment facilities
	Industrial waste water treatment
	Reconstruction of treatment facilities
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45, Pasechnaya street, Krasnodar region, Sochi 354071 Russia
Phone: +7 8622 55-10-08, +7 8622 55-10-09 Fax: +7 8622 55-32-11 E-mail:inecs@sochi.ru www.inecs.org
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