RU195080U1 - MOBILE WASTE WATER TREATMENT SYSTEM WITH DESALTING - Google Patents

Abstract

The utility model can be used for wastewater treatment from suspended solids, emulsified oil products, dissolved and dispersed organic compounds, surfactants, mechanical impurities, non-ferrous and heavy metal compounds, followed by desalination. A mobile wastewater treatment plant with desalination includes a chamber 16 with a reactor, a settling tank 35, an electrolyzer 11, a filtration unit 20, a sorption unit 34 and an electro-membrane desalination unit 36. A camera 16, a filtration unit 20, a sorption unit 34 and an electro-membrane desalination unit 36 are connected in series along the flow of treated water and mounted on a mobile trolley 25. The utility model allows, along with preliminary cleaning of suspended solids, emulsified petroleum products, dissolved and spersnyh organic compounds, surfactants, solids desalted wastewater. 2 ill., 1 tab.

Description

The proposed utility model relates to devices for wastewater treatment from suspended solids, emulsified oil products, dissolved and dispersed organic compounds, surfactants and mechanical impurities and subsequent desalination, non-ferrous and heavy metal compounds, and can be used in various industries.

Known mobile installation containing an aeration chamber, a sludge for sedimentation, equipped with a floating scoop, and a chlorination chamber [US Patent No. 3764011, B01D 21/00; C02F 3/12; declared 12/16/1971; publ. 10/09/1973].

The disadvantage of this installation is the low degree of purification of water from oil products, dissolved and dispersed organic compounds, suspended and surfactants, compounds of heavy and non-ferrous metals, salt anions.

Known mobile installation for wastewater treatment, including a chamber with a reactor, a sump and an electrolyzer placed therein [A.S. USSR No. 899487 C02F 1/46, G05D 27/00; declared 05/27/1980; publ. 01/23/1982. Bull. No. 3].

The disadvantage of this installation is the low degree of wastewater treatment from suspended solids, emulsified oil products, dissolved and dispersed organic compounds, mechanical impurities, surfactants, salt anions.

Known, selected as a prototype, "Mobile installation for wastewater treatment" [RF Patent No. 148902 U2 C02F 1/46; declared 04/29/2014; publ. 12/20/2014. Bull. No. 35], including a chamber with a reactor, sump, electrolyzer and filtration and sorption units placed in it.

The disadvantage of this installation is the inability to treat wastewater with deep desalination.

The technical problem and the result, which the claimed installation is aimed at, is the desalination of wastewater along with their preliminary purification from suspended solids, emulsified oil products, dissolved and dispersed organic compounds, solids, surfactants.

The technical result is achieved by the fact that the mobile wastewater treatment plant includes a chamber with a reactor, a sump, an electrolyzer and filtration and sorption units placed therein. New, according to the proposed utility model, is that the installation additionally contains an electromembrane desalination unit. In this case, the chamber, the filtration unit, the sorption unit and the electro-membrane desalination unit are connected in series along the flow of the treated water and mounted on a mobile trolley.

The proposed utility model is illustrated by figures of drawings. Figure 1 shows a General view of the proposed mobile installation, figure 2 - in plan.

A mobile wastewater treatment plant with desalination consists of a chamber 16, with a reactor placed in it, consisting of mixing sections 7 and mixing 9, an electrolyzer 11 and a settling tank 35, while insoluble electrodes 12 are placed in the sections of the reactor and electrolyzer, and in the mixing section level gauges of the lower 2 and upper 4 levels, in the sump - level gauges of the lower 22 and upper 23 levels, and in the upper part of the chamber - foam collecting device 13; tanks 27 and 28 for the preparation, storage and distribution of reagent solutions; pumps 1 and 24 for the supply of wastewater; metering pumps 30 and 32 for dispensing reagent solutions; DC power source 26; a filtration unit 20, a sorption unit 34, an electro-membrane desalination unit 36, equipped at the inlet and outlet with monometers 17 and 21, respectively; collection of sludge 3; control panel 29 and pipelines. All elements are mounted on a mobile trolley 25, equipped with two 37 non-swivel and two 38 swivel wheels and a handle 39 for moving it. Control of the unit’s movement is achieved by hand pulling the handle in the right direction due to the muscular strength of the operator. The use of a mobile device will eliminate the need for laying utilities of sewage from the source of their formation (storage tanks, process baths and reservoirs, etc.) on the territory of production departments, sections and workshops of industrial enterprises to stationary treatment facilities located at a considerable distance from each other distance, and to prevent and eliminate emergencies.

A mobile wastewater treatment device operates as follows. Before starting work, the device is moved to the source of formation or accumulation of wastewater. Further, wastewater containing various contaminants (table) is pumped into the mixing section 7 of the reactor, where a solution of the chemical reagent from the tank 27 is dosed simultaneously through the pipe 31 by the metering pump 30 to change the pH of the medium as a result of a chemical reaction in which the formation of sparingly soluble compounds of heavy and non-ferrous metals, dispersed organic compounds. The intensification of the mixing of wastewater with a solution of a chemical reagent is carried out by gas bubbles of hydrogen and oxygen generated by insoluble electrodes 12.

Next, the wastewater, overflowing through the upper edge of the overflow partition 8, enters the mixing section 9, formed by the space between the overflow partition 8 and the immersion partition 10. In the mixing section 9 of the reactor, at the same time as the wastewater enters, flocculant solution from the tank 28 is dosed through pipeline 33 metering pump 32. A mixture of wastewater with a flocculant solution provides coarsening of suspended particles, sparingly soluble compounds of heavy and non-ferrous metals, dispersed organic compounds, coalescence of em lgirovannyh oil and surfactants. The intensification of the wastewater mixing with the flocculant solution is carried out by gas bubbles of hydrogen and oxygen generated by insoluble electrodes 12.

From the mixing section 9 of the reactor, wastewater through the gap between the bottom of the chamber and the lower edge of the immersion baffle 10 enters the electrolysis cell 11, where partial (more than 95%) recovery of suspended solids, emulsified oil products, dispersed organic compounds, surfactants, poorly soluble non-colored compounds and heavy metals on the surface of the water mirror in the form of a sludge under the action of gas bubbles of hydrogen and oxygen generated by insoluble electrodes 12.

Further, the wastewater, overflowing through the overflow partition 14, enters through the collection pocket 15 into the sump 35, which collects mechanical impurities, as well as pollution particles, the density of which is greater than the density of water.

Wastewater is pumped from the sump by pump 24 through a pipe 19 to a filtration unit 20 for deep cleaning of mechanical impurities, suspended solids, emulsified oil products, dispersed organic compounds, sparingly soluble non-ferrous and heavy metals and further to sorption unit 34 for deep cleaning of surface-active substances and dissolved organic pollutants, from which the treated wastewater enters the electromembrane desalination unit 36, consisting of a set of insoluble electrodes and in the alternating membranes.

In the electromembrane demineralization unit under the influence of direct electric current, ions are transferred through the membranes and the wastewater is desalted with a yield of up to 98%, and an alkaline solution is produced, which is used to adjust the pH of the wastewater and salt concentrate, which is periodically removed from the unit.

In the electromembrane desalination unit, a mainly decrease in the salt content of water is observed, and the production of an alkaline solution and salt concentrate is of secondary importance.

The purified and demineralized water through the pipeline 18 is discharged from the installation.

The dispersed phase of contaminants that has surfaced to the surface of the water during wastewater treatment in the reactor and electrolyzer is in the form of suspended solids, emulsified oil products, dispersed organic compounds, surfactants, poorly soluble compounds of non-ferrous and heavy metals, is formed into a foam layer (slime), which moves from the surface of the water mirror by the foam collecting device 13 through the overflow partition 6 into the collection pocket 5, from where the slime flows into the collection 3.

The power of the insoluble electrodes 12 located in the mixing and mixing sections of the reactor, in the electrolyzer, as well as in the electromembrane desalination unit 36, is provided by an adjustable direct current source 26.

The technical result in solving the problem is achieved due to a certain sequence of equipment placement in the device, in which the wastewater in the reactor and the electrolyzer is partially purified from suspended solids, emulsified oil products, dispersed organic compounds and surfactants, non-ferrous and heavy metal compounds, and then partial cleaning of mechanical impurities in the sump and then deep cleaning of mechanical impurities, suspended emulsified petroleum products, dispersed organic compounds, sparingly soluble non-ferrous and heavy metals on the filtration unit, deep cleaning of dissolved organic compounds and surfactants on the sorption unit, and desalination (reduction in salt content due to the removal of salt anions and cations) on the electromembrane unit desalination.

The table shows the results of experiments on wastewater treatment with desalination using a mobile unit.

Based on the experimental results, it follows that the proposed design of a mobile device for wastewater treatment with desalination allows along with preliminary wastewater treatment from suspended solids, emulsified oil products, dissolved and dispersed organic compounds, surface-active substances, mechanical impurities, non-ferrous and heavy metal compounds to desalinate wastewater by removing salt anions and cations.

Claims (1)

A mobile wastewater treatment plant with desalination, including a chamber with a reactor, a sump, an electrolyzer placed in it, a filtration unit, a sorption unit, characterized in that it further comprises an electro-membrane desalination unit, the camera, a filtration unit, a sorption unit and an electro-membrane desalination unit connected in series along the flow of treated water and mounted on a mobile trolley.

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