CN104925985A - Vessel ballast water treatment device - Google Patents

Abstract

The invention discloses a ship ballast water treatment device. A ship ballast water treatment device, comprising a cyclone separator, a hydrochloric acid storage tank, a sodium chlorate storage tank, a double-headed peristaltic pump, a reaction kettle, and a jet; one end of the cyclone separator is connected to a ballast water inlet pipe Connected, one end is connected to the ejector; the ejector is connected to the ballast water outlet pipe; one end of the double-headed peristaltic pump is connected to the hydrochloric acid storage tank and the sodium chlorate storage tank, and the other end leads to the reaction kettle; The outlet of filter residue is the outlet of solid waste separated by the cyclone separator.

Description

A ship ballast water treatment device

technical field

The patent of the present invention relates to the field of ballast water, in particular to a ship ballast water treatment device.

Background technique

Ships for transporting ore, crude oil, etc. are equipped with ballast tanks, and ballast water such as seawater or fresh water is stored in the ballast tanks to control the posture of the hull and ensure stability. Ballast water is introduced into the ballast tank when the ship is empty, and the ballast water is discharged from the ballast tank as loading progresses. Therefore, the ballast water is discharged in a region different from the water intake place. Therefore, transfer of aquatic organisms, bacteria, etc. together with the ballast water may lead to colonization of these aquatic organisms, bacteria, etc. in a new environment. According to statistics, there are as many as 3,000-4,000 species of organisms carried by ballast water every day in the world. When ocean-going ships inject and discharge ballast water, it is easy to cause harmful aquatic organisms and pathogens to spread across the sea. Alien organisms that spread with ballast water discharges pose a serious threat to the marine environment of port states.

In order to deal with the biological invasion brought by the ship's ballast water, in 2004, the International Maritime Organization (IMO) formulated the "Convention on the Control and Management of Ship's Ballast Water and Sediments", which has become a mandatory international convention. The main content of this Convention is to control the transfer of ballast water and residues containing dangerous aquatic organisms and pathogens. The nearest land is at least 200 nautical miles and the water depth is at least 200m. Therefore, a safe, efficient, fast and low-cost ship ballast water treatment system must be installed on the ship.

In the current treatment of pest invasion in ship ballast water, larger organisms can be removed by physical filtration, but single-celled organisms and tiny protozoa are too small to be effectively removed by this method. Single-cell organisms and tiny protozoa can be eliminated by chemical methods, such as ozone method and ray method, which are more common at present.

The Chinese invention patent with the patent number 200510046991.8 discloses a "ship ballast water electrolysis treatment system". This system sterilizes ballast water by generating available chlorine through electrolysis, but it consumes a lot of energy to sterilize ballast water, and the effect on large multicellular organisms, such as algae, is not obvious. Patent No. 201110364532.X Chinese invention patent discloses a ballast water treatment method for ocean-going ships, which mainly kills microorganisms in the water by removing oxygen from the water, but it is not obvious for the disinfection of anaerobic organisms, and it can consumes more.

Contents of the invention

The problem to be solved by the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a device that can completely kill aquatic organisms through the filtration of the rotary separator and the two-stage method of chlorine dioxide disinfection.

The patent of the present invention adopts the following technical solutions: a ship ballast water treatment device, including a cyclone separator 6, a hydrochloric acid storage tank 11, a sodium chlorate storage tank 13, a double-headed peristaltic pump 9, a reaction kettle 14, and a fluidizer 15 One end of the cyclone separator 6 is connected to the ballast water inlet pipe 2, and one end is connected to the jet device 15; the described jet device 15 is connected to the ballast water outlet pipe 3; one end of the double-head peristaltic pump 9 is connected to the Hydrochloric acid storage tank 11, sodium chlorate storage tank 13 are connected, and the other end leads to reactor 14; Described filter residue outlet 7 is the solid waste outlet that cyclone separator 6 filters out; Chlorine dioxide waste liquid outlet 8 is reaction residue liquid outlet.

A kind of ballast water treatment device described, its aeration inlet pipe 1, sodium chlorate inlet pipe 4, hydrochloric acid inlet pipe 5, hydrochloric acid pipeline 10, hydrochloric acid storage tank 11, sodium chlorate pipeline 12, sodium chlorate storage tank 13. Reactor 14 and ejector 15 are made of acid-resistant PVC.

The beneficial effects of the present invention are: 1. The overall structure design of the present invention is reasonable, the structure is relatively simple, and the cost is low; 2. By applying the present invention, through filtration and chlorine dioxide two-stage method, ballast water purification can be completed at a relatively low cost. deal with.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments.

A. The ballast water to be treated flows into the cyclone separator 7 through the ballast water inlet pipe 3. Larger sediment particles and larger organisms are discharged through the filter residue outlet 7, and the filtered water enters the subsequent disinfection stage. .

B. The ejector 15 forms a negative pressure after the water flows through, so that the air enters the reaction kettle through the aeration inlet pipe 2, and the aeration produces chlorine dioxide, which enters the water to complete disinfection under the mixing of the Venturi tube.

C. The reaction liquid in the reaction kettle 14, according to the difference in the water treatment capacity, controls the liquid addition rate of the peristaltic pump, thereby controlling the gas production rate to vary with the water treatment capacity.

Description of drawings

Fig. 1 is the block diagram of this device: 1, aeration inlet pipe 2, ballast water inlet pipe 3, ballast water outlet pipe 4, sodium chlorate inlet pipe 5, hydrochloric acid inlet pipe 6, cyclone separator 7, filter residue outlet 8. Chlorine dioxide waste liquid outlet 9, double-head peristaltic pump 10, hydrochloric acid pipeline 11, hydrochloric acid storage tank 12, sodium chlorate pipeline 13, sodium chlorate storage tank 14, reaction kettle 15, ejector.

Claims (2)

1. A ship ballast water treatment device, comprising cyclone separator (6), hydrochloric acid storage tank (11), sodium chlorate storage tank (13), double-headed peristaltic pump (9), reaction kettle (14), Jet (15); one end of the cyclone separator (6) is connected to the ballast water inlet pipe (2), and the other end is connected to the jet (15); the jet (15) is connected to the ballast water outlet pipe (3) link to each other; Described double-head peristaltic pump (9) one end links to each other with hydrochloric acid storage tank (11), sodium chlorate storage tank (13), and the other end leads to reactor (14); Described filter residue outlet ( 7) is the outlet of the solid waste filtered out by the cyclone separator (6); the chlorine dioxide waste liquid outlet (8) is the outlet of the reaction raffinate. 2. A ballast water treatment device according to claim 1, characterized in that: aeration inlet pipe (1), sodium chlorate inlet pipe (4), hydrochloric acid inlet pipe (5), hydrochloric acid pipeline (10) , hydrochloric acid storage tank (11), sodium chlorate pipeline (12), sodium chlorate storage tank (13), reactor (14), ejector (15) are the material PVC of acid corrosion resistance.