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Method for removing sulfur hexafluoride waste of ring main unit

A technology of sulfur hexafluoride and ring network cabinets, which is applied in the field of microorganisms, can solve problems such as failure to popularize, high operating costs, and large dosage of drugs, and achieve the goal of improving biological treatment efficiency, reducing operating costs, and promoting discharge standards Effect

Inactive Publication Date: 2016-03-02
STATE GRID SHANDONG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most commonly used adsorbent is activated carbon, but it is expensive, has a short service life, requires regeneration, and is expensive to operate
In addition, the adsorption method has a wide range of applications in the treatment of heavy metal-containing wastewater and will not cause secondary pollution. However, the adsorption selectivity of the adsorbent for heavy metal ions is often not high, so it cannot be well promoted.
[0013] The Ministry of Environmental Protection requires the electroplating industry to discharge in accordance with GB21900-2008 "Electroplating Pollutant Discharge Standards". Conventional treatment methods are used to treat electroplating wastewater with complex components, which is difficult to divert thoroughly, difficult to treat up to standards, biochemically difficult, or requires facility renovation or more Level treatment, etc., so that the dosage of drugs is large, the process repeats to produce a lot of sludge, the cost is high, and it is difficult to ensure that the discharge of sewage meets the standard

Method used

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  • Method for removing sulfur hexafluoride waste of ring main unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for removing pollution from electroplating wastewater in a ring network cabinet, characterized in that it comprises the following steps:

[0041] (1) Carry out solid-liquid separation for the electroplating wastewater of the ring network cabinet. This operation can effectively prevent clogging and damage to equipment during wastewater transportation;

[0042] (2) Pass the liquid obtained in step (1) through a floating substance removal device to remove suspended substances. It can improve the processing efficiency in the subsequent process;

[0043] (3) Add the flocculant to the wastewater treated in step (2), add it according to the ratio of 10g per cubic meter of wastewater, react for 30min-40min, and dehydrate through a centrifuge;

[0044] (4) Discharge the wastewater treated in step (4) into the microbial reaction tank, adjust the pH value to 7-8, then add 15g of bacterial agent per cubic meter of liquid, and let it stand for a week.

[0045] The biologica...

Embodiment 2

[0062] Take 1L of the electroplating wastewater from the ring network cabinet in a beaker. The raw water indicators of the electroplating wastewater are: pH5.5, COD1820mg / L, Cr 6+ 5.65mg / L, Ni 2+ 70mg / L, Cu 2+ 38.3mg / L, Zn 2+ 245mg / L, NH 3 -N45mg / L, according to the above method of Example 1, first solid-liquid separation-removal of suspended matter-flocculation-microbial reaction, after treatment, the results of various indicators of the upper liquid were: pH7.8, COD32.3mg / L, Cr 6+ 0.004mg / L, Ni 2+ 0.14mg / L, Cu 2+ 0.05mg / L, Zn 2+ 0.033mg / L, NH 3 -N1.07mg / L.

Embodiment 3

[0064] The method prepared in Example 1 is used to process the electroplating sewage of a ring main unit production factory, and the results are shown in the table below

[0065]

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Abstract

The invention relates to a method for removing sulfur hexafluoride waste of a ring main unit. According to the method, at first, by means of solid-liquid separation, blocking and damage to equipment generated in the waste water conveying process can be effectively prevented, then a suspended matter removing device is used for removing suspended matter, then a flocculating agent is added according to the proportion of throwing 10 g of the flocculating agent into per cubic meter of the waste water, the reaction is carried out for 30-40 min, finally the waste water is drained to a microbial reaction pond, the pH value is adjusted to 7-8, 15 g of bactericide is thrown into per cubic meter of the liquid, and the mixture stands for one week. The method increases the water treatment capacity and improves the water treatment quality, the operation expense is reduced, and up-to-standard discharging is promoted.

Description

technical field [0001] The invention belongs to the technical field of microorganisms, and in particular relates to a method for removing sulfur hexafluoride waste from a ring network cabinet. Background technique [0002] Ring main unit (Ring Main Unit) is a group of transmission and distribution electrical equipment (high voltage switchgear) installed in metal or non-metal insulated cabinets or electrical equipment made into assembled interval ring network power supply units. The commonly used model is HXGN-10, GE type. Among them is the SF6 load switch, and the gas box is welded by stainless steel laser and sealed. The ring network cabinet has not appeared for a long time, but it has been widely used. This is mainly due to the newly developed buildings of industrial enterprises and institutions. From the perspective of power supply and distribution, medium and small capacity are the largest Most of its distribution transformers generally do not exceed 1250KVA, long-term...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/34C02F101/14C02F103/16
Inventor 李娜魏若琳王卫波王倩孙羽中
Owner STATE GRID SHANDONG ELECTRIC POWER