CN107036851A - Settle algae collection device and the method for determining the algae rate of settling - Google Patents

Abstract

The invention provides a settling algae collection device, which includes a cylindrical guide column, a filter screen is provided at the top inlet of the guide column, and a fixed screen cover for fixing the filter screen to the top of the guide column is provided on the filter screen. The cover is provided with an inlet; the bottom of the guide column is connected to the collection plate, the bottom of the side wall of the guide column is provided with a water outlet pipe, and the bottom of the collection plate is provided with a discharge pipe; in addition, the present invention also provides a method for measuring algae sedimentation rate by using a settling algae collection device The present invention can not only capture algae sedimentation rate in situ in the field monitoring process, but also analyze the sedimentation law of different algae according to the situation of different algae, which is of great significance to correctly understand the mechanism of algae bloom production and elimination, and to carry out algae bloom prediction and forecasting .

Description

Settling algae collection device and method for measuring algae settling rate

technical field

The invention relates to the field of water environment, in particular to a settling algae collecting device and a method for measuring the settling rate of the algae.

Background technique

At present, some reservoirs and lakes in my country are in a state of eutrophication, accompanied by algae blooms, which pose a threat to river and lake ecosystems and drinking water safety.

The occurrence of algae bloom is a complicated process, which is mainly affected by natural conditions such as water flow, water temperature, nutrient salt, and light, as well as biological factors such as algae death, sedimentation, aggregation, and predation. The effect of vertical distribution is extremely significant. Because the individual algae are small, the density is low, and they are easily decomposed by microorganisms, it is difficult to capture the algae settlement process by conventional methods. At present, most of the work on algae settlement is based on empirical values and indoor laboratories. How to obtain the in-situ sedimentation rate of different algae in the field monitoring process has become a key problem in correctly understanding the mechanism of algal bloom production and elimination and carrying out numerical simulation of algal bloom.

Contents of the invention

The purpose of the present invention is to overcome the above disadvantages, to provide a settling algae collection device and a method for measuring the settling rate of the algae, which can obtain the settling rate of different algae in situ during the field monitoring process.

In order to solve the above technical problems, the present invention adopts the following technical solution: a settling algae collection device, which includes a cylindrical guide column, the top inlet of the guide column is provided with a filter screen, and the filter screen is provided with a Fix the filter net to the fixed net cover on the top of the guide column, and the fixed net cover is provided with an inlet;

The bottom of the guide column is connected to the collection dish, the bottom of the side wall of the guide column is provided with a water outlet pipe, and the bottom of the collection dish is provided with a discharge pipe.

Preferably, the guide column is connected to one end of the connecting rope through a connecting buckle.

Preferably, the guide column is in the shape of a cylindrical barrel, the fixed net cover is in the shape of a ring, and the collecting plate is in the shape of a disc.

Preferably, the outer surfaces of the top and bottom side walls of the guide column are provided with external threads, the inner wall of the bottom of the fixed net cover is provided with internal threads that match the external threads of the top of the guide column, and the inner wall of the top of the collection dish is provided with There are internal threads that match the external threads at the bottom of the guide post.

Preferably, the water outlet pipe is provided with a first valve, and the discharge pipe is provided with a second valve.

Preferably, both the water outlet pipe and the discharge pipe are rubber pipes, and the first valve and the second valve both have a water stop clip structure.

In addition, the present invention also provides a method for determining the algae sedimentation rate utilizing a sedimentation algae collection device, which includes the following steps:

Step 1): Fill the guide column with pure water, tie the guide column through the connecting rope, and sink the entire settling algae collection device to the position of the water layer to be tested;

Step 2): After standing still for a period of time t, lift the entire settling algae collection device out of the water;

Step 3): Open the first valve on the water outlet pipe, collect the water body and measure the number of algae cells per unit volume in the water body according to the microscopic examination method, which is recorded as;

Step 4): Slowly drain the water in the guide column through the outlet pipe, and then separate the collection plate from the guide column;

Step 5): Open the second valve of the discharge pipe, collect the settled algae in the collection plate into the sample bottle through the discharge pipe, and measure the number of settled algae cells per unit area according to the microscopic examination method, which is recorded as M;

Step 6): The algae sedimentation rate ω at the water layer to be tested can be calculated according to .

Further, in step 5), the scraper is used to collect the settled algae in the collecting plate into the sample bottle through the discharge pipe.

Further, in the step 2), after the entire settling algae collection device is raised from the water surface, it is placed on a base with holes, and the discharge pipe passes downward through the holes of the base.

Beneficial effects of the present invention: Since the algae in different water layers will be different, after determining the sedimentation rate of a certain type of algae to be analyzed, the device for collecting settled algae of the present invention can be lowered to the position of the water layer to be measured corresponding to the algae That’s it; after standing still for a period of time, lift the entire settling algae collection device out of the water surface. During this period of standing still, the algae in the water layer to be tested will enter the guide column through the inlet at the top of the guide column, and a part of the algae will settle on the collection plate. , so that it can be measured to capture its sedimentation rate; the invention can not only capture the algae sedimentation rate in situ in the field monitoring process, but also analyze the sedimentation law of different algae according to the situation of different algae, which is helpful for correct understanding of algal blooms It is of great significance to carry out the prediction and forecast of algae bloom.

Description of drawings

Fig. 1 is a structural schematic diagram of a settling algae collection device;

Fig. 2 is a schematic diagram of an exploded structure of a settling algae collection device;

Fig. 3 is a top view structural schematic diagram of the filter screen in Fig. 1;

Fig. 4 is a top view structural schematic diagram of the fixed grid cover in Fig. 1;

Fig. 5 is a schematic view of the upward structure of the collecting dish in Fig. 1;

Fig. 6 is the structural representation of scraping brush;

In the figure, guide column 1, filter net 2, fixed net cover 3, collecting plate 4, outlet pipe 5, first valve 5.1, discharge pipe 6, second valve 6.1, connecting buckle 7, connecting rope 8, scraper 9 , Base 10.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 1 to Fig. 6, a kind of settling algae collection device, it comprises the guide post 1 that is cylinder shape, and described guide post 1 top entrance is provided with filter net 2, and described filter net 2 is provided with for The filter screen 2 is fixed on the fixed net cover 3 on the top of the guide column 1, and the fixed net cover 3 is provided with an inlet;

The bottom of the guide column 1 is connected to the collection plate 4 , the bottom of the side wall of the guide column 1 is provided with a water outlet pipe 5 , and the bottom of the collection plate 4 is provided with a discharge pipe 6 .

In the above technical solution, the filter screen 2 is used to filter the zooplankton at the entrance of the guide column 1, and it is a circular stainless steel wire mesh; the guide column 1, the fixed mesh cover 3, and the collection plate 4 are all made of acrylic.

Preferably, the guide column 1 is connected to one end of the connecting rope 8 through the connecting buckle 7 . The connecting rope 8 is used to control the guiding column 1 to reach or leave the water layer to be measured. In this embodiment, the connecting buckle 7 can be designed with reference to the connecting buckle of the TC-800C type card cover type water collector.

Preferably, the guide column 1 is in the shape of a cylindrical barrel, the fixed mesh cover 3 is in the shape of a ring, and the collection dish 4 is in the shape of a disk.

Preferably, the outer surface of the top and bottom side walls of the guide column 1 is provided with external threads, the inner wall of the bottom of the fixed mesh cover 3 is provided with internal threads that match the external threads of the top of the guide column 1, and the collection plate 4 The inner wall of the top is provided with an internal thread matched with the external thread at the bottom of the guide column 1 . This installation method can be easily disassembled and assembled, and can improve the measurement speed.

Preferably, the outlet pipe 5 is provided with a first valve 5.1, and the outlet pipe 6 is provided with a second valve 6.1.

Preferably, as shown in FIG. 1 , the water outlet pipe 5 and the discharge pipe 6 are both rubber pipes, and the first valve 5.1 and the second valve 6.1 are both water-stop clip structures. The structure of this water stop clip is simple and practical, and it is very suitable for field monitoring

In addition, the present invention also provides a kind of method utilizing settling algae collecting device to measure algae settling rate, it comprises the following steps:

Step 1): Fill the guide column 1 with pure water, tie the guide column 1 through the connecting rope 8, and sink the entire settling algae collection device to the position of the water layer to be tested; the algae in different water layers will be different, determine After you want to analyze the sedimentation rate of a certain type of algae, you can sink the sedimentation algae collection device to the position of the water layer to be measured corresponding to the algae;

Step 2): After standing still for a period of time t, lift the entire settling algae collection device out of the water; during this period of standing still, the algae in the water layer to be tested will enter the guide column 1 through the top inlet of the guide column 1, and gradually distribute In pure water, and a part settles on the collection plate 4;

Step 3): Open the first valve 5.1 on the water outlet pipe 5, collect the water body and measure the number of algae cells per unit volume in the water body according to the microscope inspection method, which is recorded as;

Step 4): drain the water in the guide column 1 slowly through the water outlet pipe 5, and then separate the collecting plate 4 from the guide column 1;

Step 5): Open the second valve 6.1 of the discharge pipe 6, collect the settled algae in the collecting plate 4 into the sample bottle through the discharge pipe 6, and measure the number of settled algae cells per unit area according to the microscopic examination method, which is recorded as M;

Step 6): The algae sedimentation rate ω at the water layer to be tested can be calculated according to .

Further, in the step 5), the scraper 9 is used to collect the settled algae in the collecting plate 4 into the sample bottle through the discharge pipe 6 . The collection efficiency of the settled algae can be accelerated by the scraping brush 9, and the settled algae is quickly scraped into the mouth of the discharge pipe 6, and finally enters the sample bottle.

Further, in the step 2), after lifting the entire settling algae collection device out of the water, it is placed on the base 10 with holes, and the discharge pipe 6 passes through the holes of the base 10 downwards. This facilitates the shelving of the settling algae collection device, while also protecting the discharge pipe 6 located on the bottom surface from damage.

The above-mentioned embodiments are only preferred technical solutions of the present invention, and should not be regarded as limitations on the present invention. The embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other if there is no conflict. The scope of protection of the present invention shall be the technical solution described in the claims, including equivalent replacements for the technical features in the technical solution described in the claims. That is, equivalent replacement and improvement within this range are also within the protection scope of the present invention.

Claims (9)

1. one kind sedimentation algae collection device, it is characterised in that：It includes the guide post in cylindrical shape（1）, the guide post （1）Top inlet is provided with screen pack（2）, the screen pack（2）Being provided with is used for screen pack（2）It is fixed on guide post（1）Top Fixed network lid in portion（3）, the fixed network lid（3）Provided with import；

The guide post（1）Bottom is with collecting dish（4）Connection, the guide post（1）Sidewall bottom is provided with outlet pipe（5）, it is described Collect dish（4）Bottom is provided with discharge nozzle（6）.

2. sedimentation algae collection device according to claim 1, it is characterised in that：The guide post（1）Pass through junction button （7）With connecting rope（8）One end is connected.

3. sedimentation algae collection device according to claim 1 or 2, it is characterised in that：The guide post（1）For cylinder Cylindrical shape, the fixed network lid（3）For toroidal, the collection dish（4）For disc-shape.

4. sedimentation algae collection device according to claim 3, it is characterised in that：The guide post（1）Top and bottom Wall outer surface is equipped with external screw thread, the fixed network lid（3）Bottom inside wall is provided with and guide post（1）Tip male thread is engaged Internal thread, the collection dish（4）Inside top wall is provided with and guide post（1）The internal thread that bottom external screw thread is engaged.

5. sedimentation algae collection device according to claim 1, it is characterised in that：The outlet pipe（5）It is provided with first Valve（5.1）, the discharge nozzle（6）It is provided with the second valve（6.1）.

6. sedimentation algae collection device according to claim 5, it is characterised in that：The outlet pipe（5）And discharge nozzle（6） It is rubber tube, first valve（5.1）With the second valve（6.1）It is sealing clamping structure.

7. the method that algae collection device determines the algae rate of settling is settled described in a kind of utilization claim 1, it is characterised in that： It comprises the following steps：

Step 1）：By guide post（1）Pure water is filled, passes through connecting rope（8）Tie down guide post（1）, and will entirely settle algae Collection device sinks to water layer position to be measured；

Step 2）：After static a period of time t, whole sedimentation algae collection device is left the water；

Step 3）：Open outlet pipe（5）On the first valve（5.1）, collect water body and unit in water body determined according to Microscopical Method For Detection The alga cells number of volume, is designated as；

Step 4）：By guide post（1）Interior water body passes through outlet pipe（5）Slowly drain, then will collect dish（4）With guide post （1）Separation；

Step 5）：Open discharge nozzle（6）The second valve（6.1）, dish will be collected（4）In sedimentation algae through discharge nozzle（6）Receive Collect in specimen bottle, according to the sedimentation alga cells number of Microscopical Method For Detection analytical unit area, be designated as M；

Step 6）：According to the algae rate of settling ω at water layer to be measured can be calculated.

8. the method that sedimentation algae collection device determines the algae rate of settling according to claim 7, it is characterised in that：It is described Step 5）In, use wiper（9）Dish will be collected（4）In sedimentation algae through discharge nozzle（6）It is collected into specimen bottle.

9. the method that algae collection device determines the algae rate of settling is settled according to claim 7 or 8, it is characterised in that： The step 2）In, after whole sedimentation algae collection device is left the water, it is put into pedestal with holes（10）On, discharge nozzle（6） It is passed down through pedestal（10）Hole.