SU1234369A1 - Installation for removing petroleum products from waste water - Google Patents

Description

2. Installation according to claim 1, characterized in that the chamber for collecting coarse particles is provided with a vertical partition installed at a distance from the bottom of the chamber.

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3. Installation under item 1, characterized in that the filter

The invention relates to wastewater treatment plants containing petroleum products and suspended solids, and can be used to clean wastewater from car washes, railway and air transport.

The purpose of the invention is to increase the cleaning efficiency and reliability in operation. .

FIG. 1 shows the installation, general view; in fig. 2 - node 1 Fig. 1 in FIG. 3 - node II in FIG. one; on

FIG. 4 shows section A-A in FIG. 1. I

The wastewater treatment unit for petroleum products contains a mechanical pre-cleaning unit in the form of a receiving tank 1 having a distribution tray 2 and a removable chamber 3 for collecting coarse impurities made with a vertical partition 4 installed at a distance from its bottom, a storage tank 5, a connected top - its part with the receiving tank 1, and the lower part - the suction pipe of the pump 6, the settling chamber 7, in which the ejector 8 is located, connected to the pressure pipe of the pump 6, dissipating Tel 9 as a series of grids, mounted opposite the ejector 8, and a device 10 for collecting oil in the form of a float 11 with a nozzle 12 connected through a hose 13 with the container 14 collecting supernatants substances. The depth control of the float 11 is controlled by the counterweight 15, and the thin one by the clutch 16. The control of the intake of oil products is carried out by the crankshaft.

fine cleaning is provided with an additional layer and an additional layer. four . Installation according to claim 1, which is designed so that, for the sake of convenience, it is equipped with a transportable unit, in which the storage tank, the pump, the settling chamber with the clean water reservoir are located.

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The chamber 7 is adjacent to the clean water reservoir TB, in the upper part of which a two-layer fine filter 19 is placed, consisting of a layer 20 of fabric filter material and a layer 21 of polymer filter material placed along an arc of a circle on a grid 22.

The settling chamber 7 is made with a sloping bottom and has a hopper 23 for collecting sludge. A pump 24 is used to pump the purified water. The storage tank 5, the pump 6, the settling chamber 7 with the clean water tank 18 are located in the transport unit 25.

The device works as follows.

Sewage fluid from the source of contamination enters the distribution tray 2, where the flow rate decreases and enters the removable chamber 3 located in the receiving tank 1. Suspended material falls out of chamber 3 due to a decrease in the flow rate and under the influence of gravitational forces. .In chamber 3, up to 50% of the incoming sludge falls out. When entering the sludge up to 3000 mg / l with a flow rate of 10 l / s, the discharge chamber 3 is calculated once per shift. The unloading of the chamber 3 from the receiving tank, as well as the sludge from the bunker 23 of the outflow chamber 7, is carried out by a lifting mechanism to the forest platform or directly into the vehicle for use in R construction. Oil products are regenerated or burned to cause more heat.

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From the receiving tank 1, the wastewaters by the pump 6 and the storage tank 5 are fed for cleaning to the settling chamber 7. Initially, the tank 5 is filled with liquid. The drains from the receiving tank 1 are sucked into the pipeline by the generated vacuum created during the intake of liquid from the accumulative tank 5. The pump 6 pumps the drains 3-7 atm out of the ejector 8, where air mixture and dissolved oil products are formed. By ejection and aeration, the phase separation effect is increased. Air flow to the mixture from the ejector 8 is fed to the diffuser 9. Oil products are kept. in the mesh cells of the diffuser 9, concentrate and drain to the surface of the water, where they are collected by means of 10 for collection. This device with the pipe 12 is attached to the float 11 and is in a semi-submersible state at a depth of 1.5 mm. Removal of oil products

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It is driven through ps ng 13 into the tank 14, the intake control is carried out by the crane 17.

Suspended substances settle on the sloping bottom of the settling tank 7 and accumulate in the bunker 23, where the volume allows the discharge of the sludge once a month. Further, the effluent flows to the after-treatment at the filter 19 and then to the reservoir 18, which has the volume of circulating water per shift. A pump 24 is used to pump the purified water.

After CLEANING the device provides the following content: suspended substances up to 18 mg / l, oil products up to 5 mg / l, which allows using water in the circulating water supply for washing. Installation is compact, each node is reliable in operation. The device can, if necessary, be quickly dismantled and installed in the desired area of the plant. Delivery of the device is carried out by any type of transport.

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Claims (4)

1. INSTALLATION FOR CLEANING WASTE WATER FROM OIL PRODUCTS, comprising a preliminary mechanical cleaning unit in the form of a receiving tank with a removable collection chamber for 'coarse particulate impurities, a stand-up chamber, a collection tank for surfaced substances, a fine filter and a clean water tank, characterized in that , in order to improve cleaning efficiency and reliability in operation, it is equipped with a storage tank, the upper part connected to the receiving tank, and the lower one with the suction pipe of the pump installed in the settling tank As ejector diffuser in the form of a series of grids and a device for collecting oil in the form of a float with a branch pipe connected via a hose with a collecting container surfaced materials, wherein the fine filter placed on top of clean water reservoir adjacent to the retention chamber. 5 8 Squash 1Q l., SU „„ 1234369 A1 of Fig. 1 2. Installation according to π. 1, characterized in that the camera for collecting coarse particles is provided with a vertical partition mounted at a distance from the bottom of the camera. 3. Installation according to claim 1, characterized in that the fine filter is equipped with an additional layer of fabric. 4. Installation by and. 1, characterized in that, for the purpose of ease of use, it is equipped with a transportable unit in which a storage tank, a pump, a settling chamber with a clean water tank are located.