RU1834858C - Device for sewage water purification - Google Patents

Abstract

Using; purification of household production wastewater. SUMMARY OF THE INVENTION: A wastewater treatment device is a primary sump with a hopper bottom, the capacity of which is divided by two vertical partitions, not reaching the bottom one third of the chamber depth. The central chamber is equipped with thin-layer modules and a distribution tray. The peripheral chambers are equipped with bristle brush loading units, air ducts for regenerating block loading, prefabricated trays connected to airlift chambers, which in turn are connected to distribution trays and air ducts. Prefabricated trays have outlet pipes to the aeration tank having an aeration system connected to the main duct by peripheral ducts. The aeration tank is separated by an advance chamber from the secondary sump, which is equipped with thin-layer modules, prefabricated trays of purified water and airlifts in the return sludge, combined pipelines. For the removal of sludge and excess biomass in the primary sump there are pipelines with valves. 2 ill. 1L C

Description

The invention relates to a sewage system and can be used to purify household and industrial wastewater.

The purpose of the invention is to increase the oxidative power.

The goal is achieved in that the primary sump is divided into three chambers by vertical partitions not reaching the bottom. At the same time, a distribution tray is installed in the central chamber and thin-layer modules underneath, in the extreme - loading blocks, under which there are air supply pipes, water collecting trays are connected on the one hand to the aeration tank and on the other hand to airlift chambers connected to the distribution chamber of the central chamber.

The invention allows to increase the oxidation rate by 2.0-2.5 times.

Figure 1 shows the device plan; figure 2 - section aa in fig. 1.

The wastewater treatment device is a primary sump 1 with a hopper bottom, the capacity of which is divided by two vertical partitions 2; not reaching the bottom by a third of the depth of the chamber. Central camera 3 oboso

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it is mined by thin-layer modules 4 and a distribution tray 5. In peripheral chambers 6, blocks 7 with bristle brush loading are installed, ducts 8 for regenerating loading of blocks 7. prefabricated trays 9 connected to chambers 10 of airlift 11, which are connected in turn with distribution trays 5 and air ducts 8. Prefabricated trays 9 have outlet pipes 12 to the aeration tank 13 with an aeration system connected to the main air duct by the air ducts 8. The aeration tank 13 is separated by an anterior chamber 14 from the secondary settler 15, which is equipped Thin-layer modules 16, prefabricated trays 17 of purified water and airlift 18 of return sludge, combined by pipelines 19. For removal of sludge in the primary sedimentation tanks 1, a pipeline 20 with a valve is made, and for removal of excess biomass - a pipe 21c with a valve 21. The pipe 22 is designed to drain treated wastewater

The device operates as follows.

The source wastewater enters the distribution tray 5 of the central chamber 3 of the primary settler 1. The top-down passage through the thin layer modules 4 of the wastewater is clarified, the precipitate falls on the bunker bottom of the settler 1, and the partially clarified water is evenly distributed over the area of the peripheral chambers 6 and passes through blocks 7 with bristly brush brush loading. Here, additional clarification of wastewater from suspended solids takes place, and at the same time, the process of hydrolysis of complex organic compounds proceeds intensively with the formation of an organic series of fatty acids such as acetic acid, propionic acid, valerianic acid, succinic acid, etc.

The sediment settling on the bunker bottom is discharged through line 20 for further processing,

The wastewater after treatment in the sump 1 contains up to 80-90% of easily oxidizable substances and enters the aeration tank 13, where it is purified by suspended microflora of active sludge. the concentration of which is about 3 g / l. The sludge mixture from the aeration tank 13 is poured into the chambers 14 of the secondary settling tank 15 and the thin layer modules 16 are clarified. Return sludge by airlift 18 is taken from the bottom of the sump 15 and is fed through a pipe 19 to the beginning of the aeration tank 13, and

clarified and treated wastewater biraegs into trays 17 and piped / discharged to a reservoir.

Excessive Pipeline Biomass

21 is periodically fed for further processing.

To regenerate the loading of blocks 7 of one of the peripheral chambers 6, an airlift 11 is included in the operation, while water from the prefabricated

tray 9 will be pumped into the distribution tray 5, for which they close the valve on the pipe 12 and supply air to the ducts 8 under the blocks 7 of the chamber 6. In this case, the particles of pollution are torn off

the loads and the heaviest sediments fall to the bottom, and the lighter ones are taken out to the collecting tray 9 and pumped by airlifts to the central chamber 3, having been recycled. During the regeneration for 15-20 minutes, the structure does not go out of operation, and the sludge which has come off from the load, the passage, the thin-layer module 4 also falls to the bottom.

The use of the proposed device is especially effective with a small length of sewer networks, for example, in enterprises of the agro-industrial complex, in small villages, etc., since in this case the hydrolysis process

Set x is practically leaking.

The oxidative power of the entire structure is doubled, which allows to double the productivity or halve the volume of the structure

same performance when reconstructing or building a new structure.

Claims (1)

SUMMARY OF THE INVENTION A wastewater treatment device comprising a primary sump, aeration tank, a secondary sump with thin-layer modules and return sludge airlifts, distribution and collection trays, and air supply pipes. The primary sump is provided with a section vertical partitions that do not reach the bottom, with the distribution tray and underneath are thin-layer modules, the outermost chambers are equipped with loading units, under which air-supply pipes are located, the drainage chutes are connected on one side to the aeration tank, and on the other hand, to the airlifts, which are connected by the distribution chamber of the central chamber. 16 2 (rg / e.2