SU1224275A1 - System of biological purification of waste water at animal breeding housings - Google Patents

Description

The invention relates to the treatment of water, industrial or domestic wastewater, in particular to the biological treatment of water, and is not intended, for example, to prepare wastewater from livestock farms for irrigation of crops.

The purpose of the invention is to increase the intensity of cleaning and reliability of the system due to the separation of coarse impurities and the use of natural aeration.

Figure 1 shows the cleaning system, a view in plan; figure 2 is the same, a longitudinal section; Figure 3 shows the aerator barriers of biological ponds, view in plan; figure 4 is the same longitudinal section; figure 5 - dam biological ponds, a longitudinal section.

The system contains a storage tank 1, which through valves is connected to two tortuous trenches 2 types of serpentine for separating coarse impurities that communicate with the aeration device, which is provided in the form of channel 3 with aerator barriers 4, cascaded along. direction of water flow, and connected to biological ponds 5. The ponds are equipped with dams 6, made of soil and having a surface water outlet 7 with a siphon 8 and bottom spillway 9 with a valve 10. In the upper part of the dam is a backup flood spillway 11.

The system operates as follows.

The sewage fluid, along the natural (or created) slope of the terrain from storage tank 1, is fed to one of the trenches 2 to precipitate coarse impurities. The other curved trench is at this time freed of sediment by an excavator or tractor transporter.

With the passage of fluid through the tortuous trench 2, where its speed of movement is extremely small, there is a sedimentation of the solid fraction and the delay of floating substances.

From trench 2, the liquid enters channel 3 with aerator barriers 4, where the flow rate increases slightly. When falling liquid through

Barriers 4 occur at the outflow of oxygen from the air.

After passing through the azatory barriers, the stock enters biological ponds 5. The number of ponds may vary depending on the terrain conditions, but not less than three or four steps.

A rational solution is

construction of biopruds, taking into account the terrain in the channels of small streams, rivers and gully network. In this case, an important factor affecting the cleaning and preparation of wastewater to the coli is its dilution with natural waters of local watercourses. Irrigation fluid is drawn from the last pond.

In bio-ponds, the presence of hydrobiocenosis (algae and aquatic macrophytes) is necessary to intensify the processes of self-purification.

The advantage of the proposed system

we are in its simplicity, economy, relative versatility. The system can serve as a temporary and permanent measure to prevent pollution of water bodies, does not exclude the use of additional cleaning units, can itself serve as an addition to existing facilities, and does not require energy costs, is easy to operate.

An important factor preventing the death of aquatic organisms and accelerating the preparation of wastewater for irrigation is its dilution with the waters of local watercourses. From the latter, a liquid can be used for irrigation. The sediment from the ponds is removed periodically after draining the water through the bottom outlet and drying out.

During heavy flood pass

water can be carried out through a reserve chute, but the capacity of the siphon water intake should be able to skip the entire volume of wastewater, rainwater or melt water, for which you can install several water intakes in a row.

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Editor V.Kovtun

Compiled by L. Sukhanova

Tehred V. Kadar Proofreader L. Pilipenko

Order 1886/22 Circulation 864 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5

Production and printing company, Uzhgorod, unitary enterprise. Project, 4

Claims (1)

SYSTEM OF BIOLOGICALLY WASTE TREATMENT OF ANIMAL COMPLEXES containing biological ponds and an aeration device, which is explained by the fact that, in order to increase the cleaning intensity and reliability of operation due to the separation of coarse impurities and the use of natural aeration, it is equipped with two tortuos trenches for separating coarse impurities attached to an aeration device made in the form of a channel with aerator barriers cascaded along