Quick starting method of step-by-step biofilm culturing of river biofilm restoration system

A biofilm system and river restoration technology, which is applied in the field of rapid start-up of gradual film formation of river restoration biofilm systems, can solve problems such as affecting ecological safety and human health, and water bodies are black and odorous, and can shorten the time for film formation, The effect of improving activity and enhancing stability

Active Publication Date: 2017-02-08
HUATIAN ENG & TECH CORP MCC
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Problems solved by technology

[0002] At present, various point and non-point source pollution such as urban domestic sewage, industrial wastewater, agricultural sewage, domestic garbage and initial rainwater invade urban water bodies, and the water environment of urban rivers is polluted to varying degrees. Nitrogen, phosphorus and organic pollutants generally ex

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  • Quick starting method of step-by-step biofilm culturing of river biofilm restoration system

Examples

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Example Embodiment

[0036] Example 1

[0037] In the 35L river simulation biofilm reactor, Φ150×80mm=(80) 5~7 series of elastic composite packings are arranged, each series of packing consists of 3~5 pieces in series, with a diameter of 16~18cm and a specific surface area of ​​350m 2 / m 3 . In addition, two aerators are evenly arranged at the bottom of the river simulation biofilm reactor.

[0038] A. Preloading of biofilm: fill the above-distributed filler in a 50L SBR reactor, take activated sludge as the inoculation sludge, the sludge concentration is about 4000~5000mg / L, and the membrane feed water is 4000mL biochemical High-performance sewage or laboratory simulated sewage (27.5g of sucrose per liter of water, 2.5g KH 2 PO 4 , Yeast extract 0.3g, K 2 HPO 4 1.3g, NH 4 Cl 7.3g, NaHCO 3 33g), add water to 30-40L to form a culture solution, mix and aerate for 5 days, and replace the culture solution every other day.

[0039] B. Domestication of low-polluted water: fill 35L of low-polluted water in a...

Example Embodiment

[0050] Example 2

[0051] A. Preload of biofilm. The filler is suspended in the SBR reactor, and activated sludge is used as inoculation sludge. The sludge concentration is about 4000~5000mg / L. The influent of the film is made of sewage with good biodegradability or 4000mL of laboratory simulated sewage (per liter of water). Contains 27.5g of sucrose, 2.5g KH 2 PO 4 , Yeast extract 0.3g, K2HPO 4 1.3g, NH4Cl 7.3g, NaHCO 3 33g), add water to 30-40L, mix and aerate for 5 days, and replace the culture medium every other day. Before replacing the culture medium, settle the sludge for 30 minutes, drain the supernatant, and reinject the culture medium.

[0052] Domestication of low-polluted water in river B. Take low-polluted natural river water into the SBR reactor, aerate for 23 hours under the condition of aeration rate of 40L / min, stop the aeration for 30 minutes, open the drain valve to drain the supernatant, and open the inlet valve to introduce a new river After the low-pollute...

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Abstract

The invention provides a quick starting method of step-by-step biofilm culturing of a river biofilm restoration system. The method comprises the following steps: A, hanging a filling material in an SBR reactor, taking activated sludge as inoculation sludge, injecting simulation sewage good in biodegradability into the SBR reactor to form a culture solution, performing uniform mixing and aeration for 5 days, and changing the simulation sewage once every other day; B, taking the filling material from the SBR reactor and putting the filling material in a river simulation biofilm reactor, the bottom of which is uniformly provided with aerators, wherein the river simulation biofilm reactor is operated in an intermittent aeration manner and discharges the supernatant during an aeration-stopping period, and filling the river simulation biofilm reactor with new low-pollution water, and performing repeated operation for 2-3 days in an intermittent aeration manner; and C, taking river deposit out, removing the upper overlaying water, removing animal and plant impurities through screening, laying the river deposit at the bottom of the river simulation biofilm reactor, and performing sealed aeration for 3-5 days. Quick starting of biofilm culturing is achieved, the obtained biofilm enriches functional microorganisms, and the river biofilm restoration system can be stably operated.

Description

technical field [0001] The invention relates to the technical field of bioremediation of river water bodies, in particular to a rapid start-up method for a biofilm system of river restoration step by step. Background technique [0002] At present, various point and non-point source pollution such as urban domestic sewage, industrial wastewater, agricultural sewage, domestic garbage and initial rainwater invade urban water bodies, and the water environment of urban rivers is polluted to varying degrees. Nitrogen, phosphorus and organic pollutants generally exceed the " Surface water environmental quality standard (GB3838-2002) class IV water standard, water body presents eutrophication state, causes phytoplankton to reproduce vigorously, consumes dissolved oxygen in water, directly causes water body to turn black and smelly, seriously affects ecological security and human beings healthy. [0003] Biofilm method is a widely used sewage (waste) water biological treatment and w...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCC02F3/1268C02F2103/007C02F2209/08C02F2209/14Y02A20/402Y02W10/10
Inventor 赵丹程寒飞冯植飞孙旻孟溪汪伟陈皓
Owner HUATIAN ENG & TECH CORP MCC
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