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Oil removal and separation device and process for waste water containing organic siloxane

An organosiloxane and oil separation technology, which is applied in the directions of grease/oily substance/float removal device, separation method, liquid separation, etc. The effect of recovering water entrained oil, reducing COD value and reducing entrained acid

Active Publication Date: 2013-11-27
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organosiloxanes are not biodegradable. Sewage COD containing organosiloxanes (COD refers to the amount of oxygen consumed during chemical oxidation of substances that can be oxidized in water, generally expressed in milligrams of oxygen consumed per liter of water. , is the basic comprehensive index of water quality monitoring) value is very high, and it is difficult to deal with. The problem of the treatment of sewage containing organosiloxane has become an important restrictive factor for the development of the organic silicon industry; Contains organic siloxane, because this kind of sewage discharge is not regular and the discharge volume is large, which not only causes a great waste of raw materials, but also causes serious pollution to the environment if it is not handled properly
At present, there are few studies on the treatment of this type of wastewater. Generally, simple static layered treatment is adopted, and the treatment effect is poor.

Method used

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  • Oil removal and separation device and process for waste water containing organic siloxane

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Experimental program
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Effect test

Embodiment 1

[0020] A device for degreasing and separating organic siloxane-containing sewage, including three functional areas: a primary degreasing zone, an enhanced degreasing zone, and a water collection zone; The area is equipped with water inlet anti-scour plate 2, primary oil removal area oil separator 3a, liquid level plate 4, built-in plastic stepped ring packing 5, water inlet anti-scour plate 2 is set on the inner wall above the primary oil removal area, and the primary oil removal area The oil separator 3a is inserted under the plane of the plastic stepped ring filler 5; the enhanced oil removal area is composed of three stages of plastic stepped ring filler 5 for oil removal and two stages of glass bead 6 for oil removal, and there are 4 oil separators for enhanced oil removal area between stages 3b, oil separator 3b in the enhanced degreasing area is inserted under the plane of plastic stepped ring packing 5 and glass beads 6, the water surface area of ​​the enhanced degreasin...

Embodiment 2

[0026] The object of oil removal and separation is: sewage containing organosiloxane, with a flow rate of 0.15m / s;

[0027] The enhanced degreasing zone is composed of two stages of plastic stepped ring packing 5 for degreasing and two stages of glass beads 6 for degreasing. There are three oil separators 3b in the enhanced degreasing zone. 4 times the surface area of ​​the water surface in the oil zone; the thickness of the glass beads 6 is 300mm, the diameter of the upper half layer of glass beads is 8mm, and the diameter of the lower half layer is 4m;

[0028] The thickness of the quartz sand layer in the catchment area is 200mm, and the diameter is 4mm;

[0029] All the other are with embodiment 1.

Embodiment 3

[0031] The object of oil removal and separation is: sewage containing organosiloxane, with a flow rate of 0.085m / s;

[0032] The enhanced degreasing zone is composed of four stages of plastic stepped ring packing 5 for degreasing and three stages of glass beads 6 for degreasing. There are 6 oil separators 3b in the enhanced degreasing zone between the stages. The water surface area of ​​the enhanced degreasing zone is the primary 8 times the surface area of ​​the water surface in the oil zone; the thickness of the glass beads 6 is 400 mm, the diameter of the upper half layer of glass beads is 10 mm, and the diameter of the lower half layer is 5 mm;

[0033] The thickness of the quartz sand layer in the catchment area is 500mm, and the diameter is 10mm;

[0034] All the other are with embodiment 1.

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Abstract

The invention relates to a separation process for waste water containing organic siloxane. A separation device comprises three functional areas, namely a primary oil removal area, strengthened oil removal area and a water collection area, wherein the primary oil removal area adopts plastic cascade packing for oil removal; the strengthened oil removal area adopts multistage plastic cascade packing and glass beads for oil separation; and the water collection area adopts quartz sand for the further oil removal. The device and the process have a good oil removal effect; the purpose of oil removal can be achieved by treated water; the content of suspended substances in the waste water is less than 20mg / L; the COD (chemical oxygen demand) is less than 200mg / L; and the waste water can be directly discharged.

Description

technical field [0001] The invention relates to a sewage degreasing and separating device and a process thereof, in particular to a sewage degreasing and separating device containing organosiloxane and a process thereof. Background technique [0002] Organosiloxane has many unique and superior properties. It can withstand high temperature, low temperature, water and moisture, and has stable performance against chemicals. Its application has penetrated into various industrial fields and plays an important role in the national economy and national defense. However, organosiloxanes are not biodegradable. Sewage COD containing organosiloxanes (COD refers to the amount of oxygen consumed during chemical oxidation of substances that can be oxidized in water, generally expressed in milligrams of oxygen consumed per liter of water. , is the basic comprehensive indicator of water quality monitoring) value is very high, and it is difficult to deal with. The problem of the treatment of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/02C02F1/40
Inventor 楼健陈晓明
Owner JIANGXI BLUESTAR XINGHUO SILICONE CO LTD