RU82211U1 - INSTALLATION OF CLEANING STORAGE DRAINS "DAMBA" - Google Patents

Abstract

1. Installation for cleaning storm water, characterized in that in a single housing there is a section for cleaning of mechanical impurities, including a thin-layer unit for removing fine suspensions and a section for filtering through a multi-layer loading consisting of a layer of combined mechanical and sorption loading, while the mechanical loading consists of a layer of lavsan with sintepon and zeolite, and the sorption charge consists of a layer of a carbon sorbent of modified nitrogen-containing coal. ! 2. Installation according to claim 1, characterized in that the use of modified nitrogen-containing coal brand MAU-200 or MAU-2A.

Description

The utility model relates to the field of treatment of storm water from organic and inorganic pollution and is intended for collecting wastewater from the surface and treating wastewater from surfactants, oil products, fats and oils.

A known storm sewage treatment plant, including a homogenization tank, a pre-treatment unit, treatment facilities with a pump station, a sorption filter unit and a biological pond, an averaging tank and a pre-treatment unit is made in the form of a tank equipped with a sandy hopper, a loosening and sediment flushing system , free-floating non-metallic pipes are installed on the water mirror, having perforation along their entire length at 180 degrees of circumference in their lower part and filled with material with total surface and high wettability with liquid particles of petroleum products, such as polyethylene or polyamide yarns. (RF patent 2130902, publ. 1999.05.27)

A known system for cleaning surface runoff from petroleum products (Application No. 2003120872, published. 2005.02.20), which includes preliminary mechanical cleaning, settling and physico-chemical post-treatment with multi-stage filtration. Before settling, the wastewater is additionally filtered through a sorption peat charge, and the physicochemical post-treatment by filtration is carried out first through an inert granular charge, then through activated carbon sorption filters

Known storm water treatment system "Livnevka" http://www.flotenk.ru/catalog/livn/

It consists of three main elements: a sediment collection system (channels, trays and gutters), filters for their cleaning from various kinds of contaminants, and tanks for their storage. The system includes the following units: sand separator, oil-gas separator, sorption block.

Solid particles are emitted from the wastewater in the sand separator. The operating principle of the sand separator is based on gravity, when suspended solids released from wastewater settle to the bottom of the separator.

Free and partially mechanically emulsified petroleum products are separated from wastewater in an oil-gas separator. The sorption block is

fiberglass container filled with hydrophobic sorbent HEC and natural schungite stone

After the sorption block, the degree of purification is up to 3 mg / L for suspended solids (BB), and up to 0.05 mg / L for Oil products, which corresponds to the standards for discharge into a fishery reservoir.

The objective of the developed utility model is to create a simple to manufacture and efficient installation for the treatment of storm drains.

The technical result consists in providing additional purification from inorganic hydrophilic contaminants containing ions of Fe, Mn, Zn, Cu, NH 4 b ions of other metals, as well as surfactants.

The storm water treatment installation is characterized by the fact that in a single case there is a section for cleaning mechanical impurities, including a thin-layer unit for removing fine suspended solids and a section for filtering cleaning through a multi-layer loading consisting of a layer of combined mechanical and sorption loading, while the mechanical loading consists of a layer of lavsan with sintepon and zeolite, and the sorption charge consists of a layer of carbon sorbent modified nitrogen-containing coal.

The combined filter load provides the cleaning of finely divided suspended solids, petroleum products, phenols, fats and surfactants. The total height of the layer of the combined filter load is 1200-1500 mm, the zeolite layer is 500 mm, the recommended coal loading layer is 700 mm.

In the filtration section through mechanical loading, the water stream is cleaned of mechanical impurities and suspended solids, including productive, as well as from petroleum films due to the coalescence effect. When filtering through sorption loading, the main purification of water from fine suspended solids, metal ions, oil products and surfactants occurs.

Figure 1 presents the installation for cleaning storm water, where:

1 - housing, 1.1 - deposition section; 1.2 - filtering section through a multi-layer loading, 1.2.1 - mechanical loading of the filtering section; 1.2.2 - sorption loading of the filtering section; 1.2.3 - lattice; 1.3 - internal partition; 1.4 - thin layer block; 2 - a large technical well with a ladder; 3 - technical well; 4 - inlet pipe; 5 - outlet pipe; 6 - cover on a large technical well; cover for a technical well with air vent; 8 - cargo tape; 9 - base plate.

The unit is attached to a monolithic foundation using load tapes.

The operation of the installation is as follows: storm drains flow through the inlet pipe 4 to the deposition section 1.1, while separation occurs under the influence of gravitational forces in the free volume with a decrease in the velocity of the incoming wastewater stream. In this case, impurities with a density greater than the density of water are precipitated, and oil products, fats and other substances with a lower density float. The thin-layer block 1.4 allows you to remove fine suspensions. Next, the wastewater flows through the internal partition 1.3 into the filtering section through a multi-layer loading, where filtering occurs through a layer of mechanical loading 1.2.1 (the mechanical loading consists of a support layer of synthetic winterizer with lavsan and a filtering layer of natural zeolite) where mechanical cleaning of suspensions, metal ions as well as from petroleum products through coalitioning. The sorption charge consists of activated carbon of the MAU brand (200 or 2A). The carbon layer adsorbs the oil in an emulsified and dissolved state, as well as SAS (both anionic and nonionic).

Characterization of the drain after the filtering section.

The developed installation allows for deep wastewater treatment from anionic surfactants (ACAS) up to 0.1 mg / l, nonionic surfactants (ACAS) up to 0.1 mg / l.

Cleaning efficiency

The name of indicators Purified Water Characteristics Concentration when discharged into the city sewer, mg / l Concentration when discharged to relief and water, mg / l Suspended matter 3.0 Oil products 0.5 ÷ 0.7 no more than 0,05 SPAS 1,0 0.1

Claims (2)

1. Installation for cleaning storm water, characterized in that in a single housing there is a section for cleaning of mechanical impurities, including a thin-layer unit for removing fine suspensions and a section for filtering through a multi-layer loading consisting of a layer of combined mechanical and sorption loading, while the mechanical loading consists of a layer of lavsan with sintepon and zeolite, and the sorption charge consists of a layer of a carbon sorbent of modified nitrogen-containing coal. 2. Installation according to claim 1, characterized in that the use of modified nitrogen-containing coal brand MAU-200 or MAU-2A.