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Treatment process for high salinity organic wastewater produced during seafood processing process

A processing and treatment technology, applied in the field of organic wastewater treatment and high-salt organic wastewater treatment technology, can solve the problems of fluctuating treatment capacity, high salt content, difficulty in meeting needs, etc., and achieve stable operation and high treatment efficiency. high efficiency effect

Active Publication Date: 2018-03-23
青岛琴路环亚环境科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Biochemical method is currently the main method to treat organic wastewater, but the high salt content in the water often leads to dehydration and death of anaerobic / aerobic bacteria, which in turn leads to the failure of activated sludge. Therefore, high-salt organic wastewater should not be treated by biological methods
The method of diluting wastewater with a large amount of fresh water and then performing biochemical treatment is also unfeasible for coastal areas that lack fresh water resources.
In addition, when multi-effect evaporation is used to treat saline wastewater, the fouling problem restricts the long-term stable operation of the device, resulting in fluctuations in the treatment capacity, which is difficult to meet the needs

Method used

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  • Treatment process for high salinity organic wastewater produced during seafood processing process

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Embodiment 1

[0024] 1) Pretreatment section: collect production wastewater and cleaning wastewater from an aquatic product processing enterprise in Shandong, enter the pretreatment section, and remove floating grease on the water body in the grease trap; 2) Primary coagulation section: in the primary sedimentation tank, Add the flocculant anionic polyacrylamide and the settling aid diatomaceous earth in turn, start stirring, the water purification material produces a large amount of flocs to sweep and settle the suspended solids in the water, and the settled sludge is pumped to the sludge thickening tank; 3) Primary acidolysis and oxidation section: the water after the first flocculation is put into the primary acidolysis and oxidation tank, 10% dilute sulfuric acid is added to adjust the pH value to 2.0, and then ferrous sulfate and hydrogen peroxide are added. Fe in the water 2+ Ion concentration is controlled at 0.5g / L, the amount of 30% hydrogen peroxide is 15ml / L, after 2.5 hours of reac...

Embodiment 2

[0034] 1) Pretreatment section: collect production wastewater and cleaning wastewater from an aquatic product processing enterprise in Shandong, enter the pretreatment section, and remove floating grease on the water body in the grease trap; 2) Primary coagulation section: in the primary sedimentation tank, Add flocculant anionic polyacrylamide, polyaluminum chloride and settling aid diatomaceous earth in sequence, turn on the stirring, the water purification material produces a large amount of flocs to sweep and settle the suspended matter in the water, and the settled sludge is pumped to Sludge thickening tank; 3) Primary acidolysis oxidation section: the water after the first flocculation is put into the primary acidolysis oxidation tank, 10% dilute sulfuric acid is added to adjust the pH to 3.5, and then ferrous sulfate and hydrogen peroxide are added. Fe in the water 2+ Ion concentration is controlled at 0.8g / L, the amount of 30% hydrogen peroxide is 15ml / L, after 2 hours of...

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Abstract

The invention discloses a treatment process for high salinity organic wastewater produced during a seafood processing process, and belongs to the technical field of environment protection, The treatment process sequentially comprises a pretreatment workshop section, a primary coagulation workshop section, a primary acidolysis oxidation workshop section, a secondary coagulation workshop section, anelectrochemical oxidation workshop section, a secondary acidolysis oxidation workshop section, a filter pressing workshop section and a sludge treatment workshop section. According to the method provided by the invention, through chemical oxidation and electrochemical oxidation of a Fenton's reagent, the wastewater is treated in segments, organic matters in a water body can be effectively degraded, flocs are formed through a flocculating agent and a settling agent, and organic matters and solids in water are swept and adsorbed, so that the chromaticity, a pH value, COD and other indexes of afinal water body meet the emission requirement. The process has the characteristics of high treatment efficiency, stability in operation, and no fresh water resource occupation. After being treated through the process, indexes such as pH, SS and COD of salinity wastewater meet a B-grade requirement of the wastewater quality standards for discharge to municipal sewers (GB / T31962-2015).

Description

Technical field [0001] The invention relates to a treatment process of organic wastewater, in particular to a treatment process of high-salinity organic wastewater generated during the processing of seafood, belonging to the technical field of environmental protection. Background technique [0002] Seafood is rich in nutrients and has a good taste, and is deeply loved by the public. However, because of the short shelf life of seafood, if it cannot be kept properly during the period of a large number of concentrated markets, it will rot and deteriorate. Usually seafood processing plants make it easier to preserve by processing seafood. However, a large amount of production wastewater and cleaning wastewater will be generated during the processing of seafood. The production wastewater mainly contains fish blood, tissue debris, and fat particles, which cause the chromaticity, COD, BOD, SS, and ammonia nitrogen of the water body to seriously exceed the standard. In addition, in or...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F101/30C02F103/32
CPCC02F1/001C02F1/4672C02F1/5236C02F1/56C02F1/66C02F1/722C02F9/00C02F2001/007C02F2001/46133C02F2101/30C02F2103/32C02F2301/08C02F2305/026
Inventor 伍立洁汪锰
Owner 青岛琴路环亚环境科技有限公司
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