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| KNOW HOW： |
Optimizing and revamping technology for SDP |
| Usage： |
Technologies For Pollution control |
| Keyword： |
Optimizing, revamping,SDP |
| Remarks： |
Pre-treating for water inflow
Most current SDPs in refineries use oil removal—floatation—biotreatment process. This process has high requirements for the quality of water inflow according to SH 3080-1999 Standards for water feeding and water discharging in petrochemical industry. Without pre-treatment, the water inflow for disposal plant cannot meet the standard.
For most refineries, the reason that their SDP cannot perform full function lies in the fact that the high waste content water, such as waste lye, sulfur and nitrogen containing wastewater, wastewater from SDP sludge unit, high concentration wastewater from oil tank is not pre-treated.
With FRIPP’s technology, the above wastewater can be pre-treated so that they meet SH 3080-1999 water standard before secondary bio-processing.
Revamping of surface aeration pool
The surface aeration pool of refinery SDP has man defects in not only water inflow and aeration modes, but also sediment and water discharging, resulting in low cleaning efficiency and large sludge loss. Besides, it cannot remove nitrogen-containing wastes.
In order to increase the capacity of SDP and realize qualified discharging, FRIPP developed the revamping technology for surface aeration pool by transforming the operation mode of surface aeration pool from co-building to SBR so that the COD, ammonia nitrogen, petroleum components, sulfides and volatile phenols in discharging water meet the GB 8978-96 (Standard for comprehensive wastewater discharging) and realizing real wastewater cleaning and qualified discharging.
Automatic monitoring/controlling system
Limited by sampling and analyzing conditions, it’s impossible to completely prevent high concentration wastewater from affecting SDP. A solution besides strengthening pre-treatment for wastewater and regular management of the plant is to install an automatic monitoring system for water quality and quantity at the water inflow point of SDP so that the quality and quantity of wastewater can be real-time monitored. The parameters for water quality are pH, COD, petroleum components, suspended solids, temperature, and etc. The accuracy of the controlling equipment can be a little lower because it is only for process control. With this system, it is possible to automatically transfer wastewater that is not qualified in quality or quantity to adjustment pool. When the quality and quantity of wastewater is back to normal, the system is automatically changed back to normal operation and wastewater in the adjustment pool is mixed with untreated wastewater and resent back to SDP. Through the above practice, we can make sure that the SDP is under normal operation with process and control methods.
Fushun Research Institute of Petroleum and Petrochmicals,SINOPEC. |
| Original file： |
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Promulgator Info |
| Full name: |
administrator |
| Country: |
CN |
| City: |
Dalian |
| Company Name: |
teloon Soft Strategy Co.,LTD |
| Homepage: |
http://www.hichem.com |
| E-mail: |
reply |
| Phone: |
86-411-82811662 |
| Fax: |
86-411-82819667 |
| Company Address: |
26 Renmin Road ,Dalian China |
| Zip/Postal Code: |
116001 |
| Introduction: |
As a professional E-information service platform with authoritative news and reports in chemical industry of chinese export and import market.Hichem has been received universally and praised highly since its established in 2001.In 2003,by joint effort of teloon chemicals and teloon soft strategy company(TSSC),Hichem team endeavored to recomposition the site ascribed to market requirement as well as offering our better service.Hichem focused on business to biusiness of new chemicals,fine chemicals,high chemicals and special chemicals.So naturally it is the very one-stop website for chemical information.Our sellers worldwide and build global on-line trade in the chemical industry. |
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