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Static settling sewage treatment device and method for modification and purification of sludge

A sewage treatment device, sludge technology, applied in the direction of water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, water/sewage treatment, etc.

Inactive Publication Date: 2021-04-09
XIAN UNVERSITY OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem of using a large number of inorganic and organic polymers in the existing sewage purification treatment, the purpose of the present invention is to provide a static sedimentation sewage treatment device and method for sludge modification and purification, which has good sedimentation and separation effects and can effectively Remove oil and suspended particles in sewage, reduce the load on the filter tank, ensure that the filtered sewage continues to meet the standard water quality, and can save the dosing of sewage treatment agents such as polyaluminum chloride, polyacrylamide, and coagulant aids amount, reduce the cost of sewage treatment, reduce the output of sludge in the process of sewage treatment, thereby reducing the cost of sludge treatment and environmental pollution

Method used

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  • Static settling sewage treatment device and method for modification and purification of sludge
  • Static settling sewage treatment device and method for modification and purification of sludge
  • Static settling sewage treatment device and method for modification and purification of sludge

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Experimental program
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Effect test

Embodiment 1

[0097] The nature of sewage water: mineralization degree 56380mg / L, oil content 2640mg / L~3760mg / L, suspended matter content 710mg / L~1130mg / L, sewage treatment capacity 14m 3 / h, considering the fluctuation of sewage, the treatment capacity of sewage static settling device is designed to be 16m 3 / h.

[0098] 1. Manufacture of horizontal square tank for static sewage settling device

[0099] 1. Design of settling chamber 3:

[0100] 1.1. Volume of settling chamber 3

[0101] The treatment capacity of the sewage static sedimentation device is 16m 3 / h, the volume of the settling chamber 3 is calculated according to formula (1), F 1 If the coefficient value is 1.8, then the volume V of the settling chamber 3 沉 28.8m 3 ;

[0102] 1.2. Size design of settling chamber 3

[0103] The height of the settling chamber 3 is 2.5 meters, the width is 2.5 meters, and the length is 4.608 meters. The actual design is 4.7 meters.

[0104] 2. Design of water storage chamber 4

[0105] ...

Embodiment 2

[0148] Sewage incoming water properties: mineralization degree 124810mg / L, oil content 3000mg / L~14000mg / L, suspended matter content 270mg / L~1240mg / L, sewage treatment capacity 21m 3 / h, considering the fluctuation of sewage, the treatment capacity of sewage static settling device is designed to be 25m 3 / h.

[0149] 1. Manufacture of horizontal square tank for static sewage settling device

[0150] 1. Design of settling chamber 3:

[0151] 1.1. Volume of settling chamber 3

[0152] The treatment capacity of the sewage static sedimentation device is 25m 3 / h, the volume of the settling chamber 3 is calculated according to formula (1), F 1 If the coefficient value is 1.75, then the volume V of the settling chamber 3 沉 43.75m 3 ;

[0153] 1.2. Size design of settling chamber 3

[0154] The height of the settling chamber 3 is 2.5 meters, the design width is 2.5 meters, and the length is 7.0 meters. The actual design is 7.0 meters.

[0155] 2. Design of water storage chamb...

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Abstract

The invention discloses a static settling sewage treatment device and method for modification and purification of sludge. The device comprises a tank body, wherein the tank body is divided into a settling cavity and a water storage cavity by a partition plate; and an oil overflowing and drainage groove is formed in the top of the settling cavity, inclined pipe filler is arranged in the middle of the settling cavity, and a drainage port, a drainage pipe, a flotation device and a water distributor are arranged at the bottom of the settling cavity. According to the device, sludge is modified by utilizing a sludge modification treatment agent and is cooperated with other sewage treatment agents for treatment; the device is used for modification treatment and repeated use of the sludge; in the operation process of the device, the modified sludge in the settling cavity is recycled and periodically replaced; the quality of treated sewage can stably reach a standard; and compared with a conventional process, treatment cost is reduced by 50% or more, a sludge amount is reduced by 90% or more, cost is saved, and a sludge discharge amount is reduced.

Description

technical field [0001] The invention relates to the technical field of oilfield sewage dosing and purification treatment in the oilfield production process, in particular to a static sedimentation sewage treatment device and method for sludge modification and purification. Background technique [0002] In the process of oilfield development, with the longer development time, more and more separated water (sewage) of oil well output fluid, it is necessary to purify the separated water of oil well output fluid and inject it into the oil layers of different oil wells to solve the problem caused by the pressure drop of the oil layer during the production process. The problem of declining production output of oil wells in oil fields. [0003] At present, in oilfield production, a large amount of inorganic and organic polymers and other chemicals are used for the purification of sewage, which increases the cost of water treatment, increases the discharge of sludge and the cost of ...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56C02F1/24C02F103/10
CPCC02F1/24C02F1/5236C02F1/56C02F2001/007C02F2103/10C02F2201/002
Inventor 尹志福杜素珍王锋赵楠李海燕孟瑜
Owner XIAN UNVERSITY OF ARTS & SCI
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