RU75650U1 - SEWAGE TREATMENT PLANT - PHASE DISPERSION SEPARATOR - Google Patents

Abstract

A wastewater treatment plant or a phase separator of wastewater treatment dispersions is intended for preliminary wastewater treatment in front of flotators or filters with granular loading of petrochemical enterprises, meat and dairy industry, railway transport, oil and fat production, laundries and other categories of wastewater similar in composition to pollution, from petroleum products, suspended solids, fats, oils, organic impurities, surfactants and other dispersed contaminants. Also, phase dispersion separators can be used to clean rain and melt water from residential and industrial areas. A wastewater treatment plant or a phase separator of wastewater treatment dispersions, comprising a receiving tank in the form of a tank with an inclined bottom, a coarse treatment unit including a coalescent oil separator, a medium purification unit connected to a fine purification unit, and supply, distribution and discharge pipelines wastewater, collection and disposal of floating and settling contaminants; it is equipped with a zone for the allocation, collection, discharge and treatment of gas wastewater impurities, combined with a flocculation chamber, has coalescent filters in the coarse and medium cleaning units, and the fine-cleaning unit is divided by a vertical partition that does not reach the bottom into two zones, and each has thin-layer modules movable in the vertical plane, equipped with at least one hinged support and flexible dividing aprons with holes and rods extending over sewage surface, as well as flushing pipelines located above the thin-layer modules and below the surface of the wastewater.

Description

The wastewater treatment plant - phase dispersion separator - is intended for preliminary wastewater treatment in front of flotators or filters with granular loading of petrochemical enterprises, meat and dairy industry, railway transport, oil and fat production, laundries and other categories of wastewater that are similar in composition to pollution from oil products suspended solids, fats, oils, organic impurities, surfactants and other dispersed contaminants. Also, phase dispersion separators can be used to clean rain and melt water from residential and industrial areas.

The well-known "Universal binary type device" for wastewater treatment, RF patent, No. 2304200, IPC E03F 5/16.

The device uses a coalescent filter, a liquid layer with a lower specific gravity, that separates floating contaminants. The device is made in the form of a container with vertical partitions installed in it, forming sections — communicating vessels, including a receiving section with an inlet pipe and an expendable section with an output pipe, and sorption filters buried in the upper part of the coalescent filter with the possibility of vertical movement and made removable . The device is located across the stormwater runoff along the watercourse, has oppositely directed flows, in which the odd vertical partition has a lower watercourse, and the even vertical partition has an upper overflow, the receiving and consuming sections are separated by a partition with a coil passing through it with flange connections and blind shutters on them.

The disadvantage of this unit of post-treatment of the specified installation is the low efficiency of the removal of colloidal organic and inorganic contaminants due to the large porosity of the fibrous load

The closest in technical essence is the "Method of wastewater treatment and wastewater treatment plant", RF patent No. 2142424, IPC С02А 9/00.

The wastewater treatment plant contains a receiving tank in the form of a tank with an inclined bottom, a coarse treatment unit, including a coalescent oil separator, a secondary treatment unit connected to a fine-purification unit, and

pipelines for the supply, distribution and disposal of wastewater, collection and disposal of floating and settling pollution.

The installation adopted as a prototype has a number of drawbacks, the main of which are increased costs for the subsequent wastewater treatment in cases where a deeper degree of particulate contamination is required: dissolved gases, emulsified ingredients (e.g. oil products), and / or solid components ( e.g. suspended solids).

The objective of the utility model is to increase the quality of treated wastewater while reducing the cost of the process.

The problem is solved as follows: a wastewater treatment plant - a phase separator of dispersions for wastewater treatment, - containing a reservoir in the form of a tank with an inclined bottom, a coarse treatment unit, including a coalescent oil separator, a medium-purification unit connected to a fine-purification unit, and pipelines the supply, distribution and disposal of wastewater, the collection and removal of floating and settling pollutants, is equipped with a zone for the allocation, collection, removal and purification of gas wastewater impurities, combined with a flocculation chamber I have coalescence filters in the coarse and medium cleaning units, and the fine cleaning unit is divided by a vertical partition that does not reach the bottom into two zones, and each has thin-layer modules movable in the vertical plane, equipped with at least one hinged support and flexible separation aprons with holes and rods extending above the surface of the wastewater, as well as flushing pipelines located above the thin-layer modules and below the surface of the wastewater.

The essence of the utility model is illustrated in the figure, which shows a cross section (figure 1).

The wastewater treatment plant - phase dispersion separator for wastewater treatment - includes a tank in the form of a tank with an inclined bottom 1, a coarse treatment unit 2, a secondary treatment unit 3, a fine treatment unit 4, sewage supply and distribution pipelines 5, a sewage disposal pipeline waters 6, pipelines for collecting and discharging floating pollutants 7, pipelines for collecting and discharging sedimentary contaminants 9, a zone for the allocation, collection, diversion 10 and treatment of gas impurities from wastewater 11, a mixing chamber 12, a coalescent filter of the coarse cleaning unit 13, koalas stsentny filter assembly cleaning medium 14 does not reach the vertical to the bottom of partition 15, two areas 16 downward and upward flow 17 of wastewater, the movable vertical thin-modules 18, 19 with the pivot bearing and

flexible dividing aprons 20 with holes 21 and rods 22, flushing pipelines of thin-layer modules 23. The installation also has a reagent supply pipe 24, flocculation chamber 25, sludge removal pipe 26, recirculation flushing fluid supply pipe 27 to thin-layer modules, air supply pipe 28 and fine aerator 29, rotary drive 30 of thin-layer modules.

Installation for wastewater treatment - phase dispersion separator for wastewater treatment is as follows.

Wastewater containing contaminants in the form of suspended, emulsified and gaseous impurities (suspended solids, oils, petroleum products, fats, hydrogen sulfide, etc.) is sent to the tank for treatment in the form of a tank with an inclined bottom 1 through the sewage supply pipe 5, passing coalescence filter 13 of the coarse treatment unit 2, enters the mixing chamber 12 of wastewater with a reagent (coagulant and / or flocculant) fed through pipeline 24. The coalescence filter is formed from a floating layer of hydrophobic treated wastewater contaminants. Emulsified (liquid) wastewater contaminants in a dispersed state, passing through a layer of the same pollutants with the same surface tension, coarsen and, in the bulk, coalesce, i.e. pass from a dispersed state into a volume. The increase (excess) of the hydrophobic layer of the coalescent filter 13 is discharged through the pipeline for collection and removal of floating contaminants 7.

Next, the water enters the secondary cleaning unit 3, where in the flocculation chamber 25 colloidal particles of coagulant are formed, sorbing suspended impurities, and by supplying air through a pipe 28 through a fine aerator 29, gaseous impurities are blown into the zone of extraction, collection, discharge 10 and purification of gas wastewater impurities water 11. Gaseous impurities released from wastewater (hydrogen sulfide, mercaptans, ammonia, etc.) from the zone of extraction, collection, removal of 10 gas impurities are transported by any known feeding device gas, for example, by a fan, for cleaning gas impurities 11.

The wastewater freed from gas impurities with the formed flakes from the secondary treatment unit 3 through a coalescence filter of the secondary treatment unit 14 with a hydrophobic layer of floating wastewater contaminants enters the fine treatment unit 4, which has two zones of downward 16 and upward flow of 17 wastewater. Thin-layer modules 18 are mounted in countercurrent mode: with a downward flow

16 for separating dispersed contaminants with a density of less than 1 and with an upstream 17 for separating dispersed contaminants with a density of more than 1.

The dispersed impurities detained in the coalescence filter of the intermediate treatment unit 14 and that emerged in the downstream stream 16 (thin-layer module) with a density of less than 1 are removed through the discharge pipeline of floating contaminants 7, and with a density of more than 1 are removed periodically through the discharge pipe of sludge 16. The purified waste water is discharged through the discharge pipe treated wastewater 6.

Depending on the concentration and ratio of the treated wastewater contaminants during commissioning, the installation determines the optimal angle of inclination of the thin-layer modules 18 using the rotary drive 30 of the thin-layer modules in positions a, b, c.

Settled between a vertical septum 15 not reaching the bottom and thin-layer pollution modules 18, with a density greater than 1, onto flexible separating aprons 20, flexible separating aprons with holes and rods through holes 21 in them, as well as by shaking with rods - 22 are sent to the sludge discharge pipe 26.

Periodically, a pump for flushing the inter-shelf space through the recirculation supply pipe to the recirculation washing liquid supply pipe 27 delivers liquid sludge to the thin-layer modules, which “wipes out” the formation of compacted contaminants, and then is discharged from the tank body 1 through the sludge discharge pipe 26.

Indicators of wastewater treatment by utility model and prototype are shown in the table.

Table Sewage treatment mode The indicators of wastewater, mg / l Specific process parameters Original / Purified weighted things oil products weighted things oil products consumption cost price According to the prototype 368 245 137 68 1.0 1.0 By utility model 368 245 31 24 1.2 0.85

Comparing the wastewater treatment indicators according to the prototype and utility model, it can be seen that the claimed utility model has advantages both in quality and consumption of treated wastewater, and in the cost of the process.

Claims (1)

Wastewater treatment plant - a phase separator of dispersions for wastewater treatment, containing a tank in the form of a tank with an inclined bottom, a coarse treatment unit, including a coalescent oil separator, a secondary treatment unit connected to a fine treatment unit, as well as sewage supply, distribution and discharge pipelines water, collecting and discharging floating and settling contaminants, characterized in that it is equipped with a zone for the allocation, collection, diversion and purification of gas wastewater impurities, combined with a flocculation chamber, has a koale centric filters in the coarse and medium cleaning units, and the fine cleaning unit is divided by a vertical partition that does not reach the bottom into two zones, and each has thin-layer modules movable in the vertical plane, equipped with at least one hinged support and flexible dividing aprons with holes and rods that exit above the surface of the wastewater, as well as flushing pipelines located above the thin-layer modules and below the surface of the wastewater.