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Method for pre-treating seawater by flow-raising biological active carbon filtering pool

A biological activated carbon and pretreatment technology, applied in the direction of sustainable biological treatment, biological water/sewage treatment, seawater treatment, etc., to achieve the effects of reducing production, good effluent quality, and increasing biological adsorption load

Active Publication Date: 2010-09-08
NORTH CHINA MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the use of biological activated carbon technology for seawater pretreatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: Treatment of seawater containing low concentrations of organic matter. Complete according to the following steps: ① Sand settling, that is, remove large particles of inorganic matter and silt in seawater; ② Rapid filtration (quick filter), that is, to further remove suspended substances that cannot be removed through the sand settling process and can cause blockage of the activated carbon filter; ③The seawater after removing sand and suspended solids is passed into the biological activated carbon filter for the third step of treatment, and the dissolved organic pollutants in the seawater are removed or transformed; ④The seawater treated by the biological activated carbon filter is recycled Filter further and get water out. The hydraulic retention time (HRT) of the above-mentioned biological activated carbon filter is 0.5-2 hours. This process can effectively remove suspended solids, colloidal substances, dissolved organic pollutants, microorganisms, bacteria,...

Embodiment 2

[0011] Example 2: Treatment of seawater containing high concentrations of organic matter. Complete according to the following steps: ① Sand settling, that is, remove large particles of inorganic matter and silt in seawater; ② Pass the desanded seawater into the biological activated carbon filter for treatment, and the dissolved organic pollutants in the seawater are removed or transformation; ③The seawater treated by the biological activated carbon filter is further filtered to produce water. The hydraulic retention time HRT of the above-mentioned biological activated carbon filter is 0.5-1 hour. This process can effectively remove suspended solids, dissolved organic pollutants, colloidal substances, microorganisms, bacteria, ammonia nitrogen, etc. in seawater.

Embodiment 3

[0012] Example 3: Treatment of seawater containing high concentrations of organic matter and suspended matter. Complete according to the following steps: ① Sand settling, that is, remove large particles of inorganic matter and silt in seawater; ② Rapid filtration (quick filter), that is, to further remove suspended substances that cannot be removed through the sand settling process and can cause blockage of the activated carbon filter; ③The seawater after removing sand and suspended solids is passed into the biological activated carbon filter for treatment, and the dissolved organic pollutants in the seawater are removed or transformed; ④The seawater treated by the biological activated carbon filter is further filtered , out of the water. The hydraulic retention time HRT of the above-mentioned biological activated carbon filter is 0.25-1 hour. This process can effectively remove suspended solids, dissolved organic pollutants, colloidal substances, microorganisms, bacteria, am...

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PUM

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Abstract

A process for pre-treating seawater by up-flow biologic activated carbon filter pool includes such steps as depositing sand, filtering in a biologic activated carbon filter pool, and further filtering.

Description

Technical field: [0001] The invention belongs to a method for pretreating seawater in the seawater desalination process, in particular to a method for pretreating seawater by using an upflow biological activated carbon filter. Background technique: [0002] At present, my country's seawater desalination technology is becoming more and more mature, and the reverse osmosis (RO) seawater desalination process has gradually become the leading technology for seawater desalination. The key to its technology is the reverse osmosis membrane. Although the production of membranes and components is quite mature, the average service life of the membrane is only 5 years, which is an important reason for the high cost of seawater desalination, and membrane fouling is the cause of membrane pollution. The main reason for the short service life. Pretreatment of seawater is the key to slowing down membrane fouling, prolonging membrane life, and ensuring long-term stable operation of reverse o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10C02F9/14C02F103/08
CPCY02W10/10
Inventor 陈立朱开东郭兴芳陶润先阚薇莉
Owner NORTH CHINA MUNICIPAL ENG DESIGN & RES INST