Toxic wastewater treatment system

Abstract

The utility model aims to provide a toxic wastewater treatment system. The toxic wastewater treatment system comprises an anaerobic tank, an aerobic tank, an anaerobic tank water inlet pipe, an anaerobic tank water outlet pipe, an aerobic tank water inlet pipe, an aerobic tank water outlet pipe, an anaerobic tank return pipe, an aerobic tank return pipe, an anaerobic tank return pump and an aerobic tank return pump, the anaerobic tank is made of glass fiber reinforced plastic or plastic or steel or concrete, and water treatment microorganisms grow in the anaerobic tank; the aerobic tank is made of glass fiber reinforced plastic or plastic or steel or concrete, water treatment microorganisms grow in the aerobic tank, and an aerator is arranged at the bottom; the anaerobic tank is provided with an anaerobic tank water inlet pipe, an anaerobic tank water outlet pipe, an anaerobic tank reflux pipe and an anaerobic tank reflux pump; the device has the beneficial effects that effluent of the biological reaction tanks (including the anaerobic tank, the anoxic tank and the aerobic tank) flows back to the water inlet pipe, and the inflow water is diluted. The wastewater toxicity is greatly weakened, the activity of water treatment microorganisms is kept, and the wastewater treatment efficiency is improved.

Description

Technical Field

[0001] The invention relates to a toxic wastewater treatment system. Background Art

[0002] For wastewater that is toxic to water treatment microorganisms, such as landfill leachate, pig farm or cattle farm wastewater, and chemical wastewater, dilution by ten times or more will greatly reduce the toxicity, maintain the activity of water treatment microorganisms, and improve wastewater treatment efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a toxic wastewater treatment system.

[0004] Return the effluent from the biological reaction tank (including anaerobic tank, anoxic tank, and aerobic tank) to the water inlet pipe to dilute the inlet water.

[0005] Return the effluent from the biological reaction tank (including anaerobic tank, anoxic tank, aerobic tank) to the inlet pipe, with the return ratio reaching 10 times or higher to dilute the inlet water.

[0006] For the anaerobic tank-aerobic tank water treatment process, a small backflow method is adopted, that is, the effluent from the anaerobic tank flows back to the anaerobic tank inlet pipe, and the effluent from the aerobic tank flows back to the aerobic tank inlet pipe.

[0007] For the anaerobic tank-aerobic tank water treatment process, a large reflux method is adopted, that is, the effluent from the aerobic tank flows back to the anaerobic tank inlet pipe.

[0008] The invention discloses a toxic wastewater treatment system, comprising a biological reaction tank (such as an anaerobic tank, an anoxic tank, an aerobic tank), an inlet pipe, an outlet pipe, a return pipe, and a return pump.

[0009] Bioreactors (such as anaerobic, anoxic, and aerobic tanks) are constructed from fiberglass, plastic, steel, or concrete, and house water treatment microorganisms. These tanks are equipped with an inlet pipe, an outlet pipe, a return pipe, and a return pump. The return pump is installed on the return pipe, which is connected to the outlet pipe at one end and the inlet pipe at the other.

[0010] A toxic wastewater treatment system includes an anaerobic tank, an aerobic tank, an anaerobic tank inlet pipe, an anaerobic tank outlet pipe, an aerobic tank inlet pipe, an aerobic tank outlet pipe, an anaerobic tank return pipe, an aerobic tank return pipe, an anaerobic tank return pump, and an aerobic tank return pump. The anaerobic tank is made of fiberglass, plastic, steel, or concrete, and has water treatment microorganisms growing inside. The aerobic tank is made of fiberglass, plastic, steel, or concrete, and has water treatment microorganisms growing inside. An aerator is installed at the bottom. The anaerobic tank is equipped with an anaerobic tank inlet pipe, an anaerobic tank outlet pipe, an anaerobic tank return pipe, and an anaerobic tank return pump. The anaerobic tank return pump is installed on the anaerobic tank return pipe, with one end of the anaerobic tank return pipe connected to the anaerobic tank outlet pipe and the other end connected to the anaerobic tank inlet pipe. The aerobic tank is equipped with an aerobic tank inlet pipe, an aerobic tank outlet pipe, an aerobic tank return pipe, and an aerobic tank return pump. The aerobic tank return pump is installed on the aerobic tank return pipe, one end of which is connected to the aerobic tank outlet pipe and the other end is connected to the aerobic tank inlet pipe. The anaerobic tank outlet pipe is connected to the aerobic tank inlet pipe.

[0011] A toxic wastewater treatment system includes an anaerobic tank, an aerobic tank, an anaerobic tank inlet pipe, an anaerobic tank outlet pipe, an aerobic tank inlet pipe, an aerobic tank outlet pipe, a return pipe, and a return pump. The anaerobic tank is made of fiberglass, plastic, steel, or concrete, and has water treatment microorganisms growing inside. The aerobic tank is made of fiberglass, plastic, steel, or concrete, and has water treatment microorganisms growing inside. An aerator is installed at the bottom. The anaerobic tank is equipped with an anaerobic tank inlet pipe and an anaerobic tank outlet pipe. The aerobic tank is equipped with an aerobic tank inlet pipe and an aerobic tank outlet pipe. The return pump is installed on the return pipe, with one end of the return pipe connected to the aerobic tank outlet pipe and the other end connected to the anaerobic tank inlet pipe. The anaerobic tank outlet pipe is connected to the aerobic tank inlet pipe.

[0012] The toxic wastewater treatment system of the present invention returns the effluent from biological reaction tanks (including anaerobic tanks, anoxic tanks, and aerobic tanks) to the water inlet pipe to dilute the inlet water. This significantly reduces the toxicity of the wastewater, maintains the activity of water treatment microorganisms, and improves wastewater treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the toxic wastewater treatment system

[0014] Figure 2 Schematic diagram of the small reflow anaerobic tank-aerobic tank water treatment process system

[0015] Figure 3 Schematic diagram of the large recirculation anaerobic tank-aerobic tank water treatment process system DETAILED DESCRIPTION

[0016] See also Figure 1 A toxic wastewater treatment system includes a biological reaction tank (such as an anaerobic tank, an anoxic tank, an aerobic tank) 1, an inlet pipe 2, an outlet pipe 3, a return pipe 4, and a return pump 5.

[0017] A bioreactor tank (e.g., an anaerobic, anoxic, or aerobic tank) 1 is made of fiberglass, plastic, steel, or concrete, and houses water treatment microorganisms. It is equipped with an inlet pipe 2, an outlet pipe 3, a return pipe 4, and a return pump 5. The return pump 5 is mounted on the return pipe 4, one end of which is connected to the outlet pipe 3 and the other end to the inlet pipe 2.

[0018] Working principle:

[0019] Toxic wastewater enters the bioreactor 1 through inlet pipe 2. Microorganisms decompose pollutants such as COD, BOD, ammonia, and phosphorus into carbon dioxide, water, and nitrogen, purifying the wastewater. The effluent flows out through outlet pipe 3. A portion of the effluent flows back to the inlet pipe 2 via a reflux pump 5 and reflux pipe 4. The reflux ratio is 10, diluting the toxic wastewater tenfold. This significantly reduces the concentration of toxic substances (such as antibiotics and heavy metals) in the wastewater and protects the activity of the microorganisms.

[0020] See also Figure 2 A toxic wastewater treatment system includes an anaerobic tank 11, an aerobic tank 111, an anaerobic tank inlet pipe 22, an anaerobic tank outlet pipe 333, an aerobic tank inlet pipe 222, an aerobic tank outlet pipe 33, an anaerobic tank return pipe 444, an aerobic tank return pipe 44, an anaerobic tank return pump 555, and an aerobic tank return pump 55. The anaerobic tank 11 is made of fiberglass, plastic, steel, or concrete, and contains water treatment microorganisms. The aerobic tank 111 is also made of fiberglass, plastic, steel, or concrete, and contains water treatment microorganisms. An aerator 6 is provided at the bottom. The anaerobic tank 11 is equipped with an anaerobic tank inlet pipe 22, an anaerobic tank outlet pipe 333, an anaerobic tank return pipe 444, and an anaerobic tank return pump 555. The anaerobic tank return pump 555 is installed on the anaerobic tank return pipe 444. One end of the anaerobic tank return pipe 444 is connected to the anaerobic tank inlet pipe 22 and the other end is connected to the anaerobic tank outlet pipe 333. The aerobic tank 111 is equipped with an aerobic tank inlet pipe 222, an aerobic tank outlet pipe 33, an aerobic tank return pipe 44, and an aerobic tank return pump 55. The aerobic tank return pump 55 is installed on the aerobic tank return pipe 44. One end of the aerobic tank return pipe 44 is connected to the aerobic tank outlet pipe 33 and the other end is connected to the aerobic tank inlet pipe 222. The anaerobic tank outlet pipe 333 is connected to the aerobic tank inlet pipe 222.

[0021] Working principle:

[0022] Toxic wastewater enters the anaerobic tank 11 through the anaerobic tank inlet pipe 22. Pollutants such as COD and nitrate nitrogen in the water are decomposed into carbon dioxide, water, nitrogen, etc. under the action of microorganisms, and the wastewater is purified. The effluent flows out from the outlet pipe 333. A portion of the effluent is returned to the anaerobic tank inlet pipe 22 through the reflux pump 555 and the reflux pipe 444. The reflux ratio is 10, which dilutes the toxic wastewater by 10 times, greatly reducing the concentration of toxic substances (such as antibiotics, heavy metals, etc.) in the wastewater and protecting the activity of microorganisms in the anaerobic tank 11. A portion of the effluent enters the aerobic tank 111 through the aerobic tank inlet pipe 222 to remove pollutants such as COD and ammonia nitrogen in the water, and the wastewater is further purified. The effluent flows out from the outlet pipe 33. A portion of the effluent is returned to the aerobic pool inlet pipe 222 through the reflux pump 55 and the reflux pipe 44. The reflux ratio is 10, which dilutes the toxic wastewater by 10 times, greatly reducing the concentration of toxic substances (such as antibiotics, heavy metals, etc.) in the wastewater and protecting the activity of microorganisms in the aerobic pool 111.

[0023] See also Figure 3 A toxic wastewater treatment system includes an anaerobic tank 11, an aerobic tank 111, an anaerobic tank inlet pipe 22, an anaerobic tank outlet pipe 333, an aerobic tank inlet pipe 222, an aerobic tank outlet pipe 33, a return pipe 44, and a return pump 55. The anaerobic tank 11 is made of fiberglass, plastic, steel, or concrete, and has water treatment microorganisms growing inside. The aerobic tank 111 is made of fiberglass, plastic, steel, or concrete, and has water treatment microorganisms growing inside. An aerator 6 is provided at the bottom. The anaerobic tank 11 is provided with an anaerobic tank inlet pipe 22 and an anaerobic tank outlet pipe 333. The aerobic tank 111 is provided with an aerobic tank inlet pipe 222 and an aerobic tank outlet pipe 33. The return pump 55 is installed on the return pipe 44, one end of which is connected to the aerobic tank outlet pipe 33 and the other end is connected to the anaerobic tank inlet pipe 22. The anaerobic tank outlet pipe 333 is connected to the aerobic tank inlet pipe 222.

[0024] Working principle:

[0025] Toxic wastewater enters anaerobic tank 11 through anaerobic tank inlet pipe 22. Microorganisms decompose pollutants such as COD and nitrate nitrogen into carbon dioxide, water, and nitrogen gas, thereby purifying the wastewater. The effluent flows out through outlet pipe 333. It then enters aerobic tank 111 through aerobic tank inlet pipe 222, where pollutants such as COD and ammonia nitrogen are removed, further purifying the wastewater. The effluent flows out through outlet pipe 33. A portion of the effluent flows back to the anaerobic tank inlet pipe 22 via reflux pump 55 and reflux pipe 44. The reflux ratio is 10, which dilutes the toxic wastewater by 10 times. This significantly reduces the concentration of toxic substances (such as antibiotics and heavy metals) in the wastewater and protects the activity of microorganisms in anaerobic tank 11 and aerobic tank 111. At the same time, the nitrate nitrogen and nitrite nitrogen converted from ammonia nitrogen in aerobic tank 111 are returned to anaerobic tank 11 to be converted into nitrogen gas.

Claims

1. A toxic wastewater treatment system, characterized in that: It includes anaerobic tank, aerobic tank, anaerobic tank inlet pipe, anaerobic tank outlet pipe, aerobic tank inlet pipe, aerobic tank outlet pipe, anaerobic tank return pipe, aerobic tank return pipe, anaerobic tank return pump, aerobic tank return pump; the anaerobic tank is made of glass fiber reinforced plastic or plastic or steel or concrete, and water treatment microorganisms grow inside; the aerobic tank is made of glass fiber reinforced plastic or plastic or steel or concrete, and water treatment microorganisms grow inside, and an aerator is set at the bottom; the anaerobic tank is equipped with an anaerobic tank inlet pipe, anaerobic tank outlet pipe, anaerobic tank Return pipe and anaerobic tank return pump; the anaerobic tank return pump is installed on the anaerobic tank return pipe, one end of the anaerobic tank return pipe is connected to the anaerobic tank outlet pipe, and the other end is connected to the anaerobic tank inlet pipe; the aerobic tank is equipped with an aerobic tank inlet pipe, an aerobic tank outlet pipe, an aerobic tank return pipe, and an aerobic tank return pump; the aerobic tank return pump is installed on the aerobic tank return pipe, one end of the aerobic tank return pipe is connected to the aerobic tank outlet pipe, and the other end is connected to the aerobic tank inlet pipe; the anaerobic tank outlet pipe is connected to the aerobic tank inlet pipe.

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