Test system for synchronizing aquatic organism characteristics statically and dynamically with the duress of pollution

Abstract

The invention provides a static and dynamic synchronous testing system of characteristics of aquatic lives under the menace of pollution. The invention is characterized in that the invention comprises a still water system and a dynamic water system; the still water system and the dynamic water system are connected with a water collection tank. The invention has the advantages that the water out of the still water system and the dynamic water system is mixed thoroughly and uniformly before the water is distributed; in this way, the synchronization and the consistency of the physicochemical characteristics of the water bodies in the still water system and the dynamic water system are effectively ensured; water is distributed to a static water tank in the way that water flows from an elevated tank slowly under gravity; water distribution diffusers are transversely arranged at a water inlet to distribute water into the static water tank uniformly and stably, and the static conditions of the water body in the static water tank are ensured; a flow regulation grid at the inlet end and a water level and flow regulation and control end gate at the outlet end of the dynamic system effectively ensure the dynamic conditions and the flow stability of the water body in a dynamic water tank; the testing system has simple structure, stable functions and is usable; and the cost is low.

Description

technical field [0001] The present invention relates to the simulation of the ecological environment of water bodies such as lakes, reservoirs, ponds, rivers, ditches, etc., especially in comparative studies of static water (such as lakes, reservoirs, ponds, etc.) and moving water (such as rivers, ditches, etc.), under pollution stress Static and dynamic simultaneous test system for aquatic biological characteristics. Background technique [0002] At present, the comparative experimental research on the characteristics of aquatic organisms under pollution stress in static and dynamic water mainly uses the flow velocity gradient method and the simultaneous observation method. The flow rate gradient method means that in the same flume system, through the control of the flow rate, a flow rate gradient from zero flow rate (static condition) to different levels of flow rate (dynamic condition) is formed (for example, the flow rate is 0, 0.1, 0.5, 1.0, 2.0, 5.0...), so as to real...

AI Technical Summary

Problems solved by technology

The flow rate gradient method means that in the same flume system, through the control of the flow rate, a flow rate gradient from zero flow rate (static condition) to different levels of flow rate (dynamic condition) is formed (for example, the flow rate is 0, 0.1, 0.5, 1.0, 2.0, 5.0...), so as to realize the comparative test research on static and dynamic water, but because the static test and dynamic test are not synchronized, the concentration of water pollutants under different flow rate gradients is obviously not consistent, so the analysis of the comparative test results have a greater impact

Synchronous observation method refers to the use of static water tanks to simulate still water environments such as lakes, reservoirs, and ponds, and the use of dynamic water tanks to simulate dynamic water environments such as rivers and ditches. The static water tanks and dynamic water tanks are placed under the same experimental conditions for simultaneous observation. In the test device, the static water tank and the dynamic water tank are independent of each other, and the pollutant removal efficiency is higher under the dynamic water condition. With the operation of the system, the pollutant concentration in the dynamic water tank will become lower than that in the static water tank, resulting in the static water tank and the static water tank. The concentration of pollutants in the dynamic water tank cannot be kept consistent, which has a great impact on the analysis of the comparative test results

It can be seen that the current comparative experimental studies have failed to maintain the synchronization and consistency of the physical and chemical properties of water under static conditions and dynamic conditions, so they cannot truly and accurately reflect the impact mechanism of hydrodynamic conditions on the changes in aquatic biological properties under pollution stress.

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