CN203256028U - Constant-temperature anaerobic pond sewage processing system utilizing solar energy and biogas energy to heat - Google Patents

Abstract

The utility model relates to a constant-temperature anaerobic pond sewage processing system utilizing solar energy and biogas energy to heat. The sewage processing system is composed of a fermentation pool and a heating system, wherein the fermentation pool is cylindrical in shape, a plate is arranged at the bottom of the pool, the top of the fermentation pool is covered with a special biogas top membrane, a heating coiler is distributed on the outer wall of the fermentation pool, recyclable water is arranged in the heating coiler on the outer wall, the heating system comprises a solar heat collecting system, a solar heating system and a biogas heating system, the solar collecting system is formed by a solar vacuum heat collector, the solar vacuum heat collector is connected with a heat accumulating water box, the heat accumulating water box is connected with the heating coiler on the outer wall of the pool, and the biogas heating system is connected with the heating coiler on the outer wall. Hot water in a solar photo-thermal system photothermal system circulatingly flows through the coiler on the outer wall of the anaerobic fermentation pool to heat the wall of the pool. Biogas generated in the anaerobic pool is combusted at a low temperature condition to heat circulating water to stably supplement the solar hot water heating system in order to ensure the perennial stable running of the sewage processing system.

Description

A constant temperature anaerobic tank sewage treatment system heated by solar energy and biogas energy

technical field

The utility model relates to an anaerobic pool sewage treatment system, in particular to a constant temperature anaerobic pool sewage treatment system heated by solar energy and methane energy. the

Background technique

Sewage discharge is the main cause of water pollution. As an important component of water environment protection, sewage treatment has been paid more and more attention by the society. It is quite common to set an anaerobic tank unit at the front end of the sewage treatment process, and the anaerobic tank can prepare for the subsequent biological phosphorus uptake process. the

Anaerobic fermentation is a sewage treatment process that depends on a constant temperature. The anaerobic tank needs to maintain a certain temperature to allow anaerobic bacteria to survive, so that microorganisms can effectively survive and function, and transform organic matter into biogas to achieve the role of sewage treatment. the

The heat supply of the current anaerobic pond has the problem of high energy consumption and low efficiency, and under low temperature conditions, the amount of biogas produced by the biogas digester is small, which is not enough to maintain the conditional temperature of anaerobic fermentation. To ensure the normal full-load gas production in the low temperature environment in winter, it is necessary to heat the biogas digester. The research on biogas fermentation shows that mesophilic fermentation has better economy, that is, maintain the anaerobic fermentation environment at a temperature of 35°C. Therefore, the use of anaerobic fermentation for sewage treatment requires a stable heating system. the

As a clean and renewable clean energy, solar energy can meet the economic, environmental protection and energy-saving heating requirements of anaerobic pools. In addition, the biogas generated by combustion is used to heat the circulating water as an energy supplement for the solar hot water heating system, which can meet the heating requirements of the system in rainy and low temperature environments, and make the sewage treatment system run stably all year round. the

Contents of the invention

The problem to be solved by the utility model is to provide a constant temperature anaerobic tank sewage treatment system heated by solar energy and methane energy for the current problems of high energy consumption and low efficiency in sewage treatment. the

The utility model is realized using the following technical solutions:

The system consists of a fermentation tank and a heating system. The body of the fermentation tank is cylindrical, with a plate at the bottom of the tank, and a special biogas top membrane on the top of the fermentation tank. Heating coils are distributed on the outer wall of the fermentation tank, and the heating coils on the outer wall are equipped with Recyclable water, the heating system includes solar heat collection system, solar heating system and biogas heating system, wherein the solar heat collection system is composed of solar vacuum heat collectors, and the solar vacuum heat collectors are connected with the heat storage tank, and the heat storage The tank is connected to the heating coil on the outer wall of the pond, and the biogas heating system is connected to the heating coil on the outer wall. the

Under the condition of a constant 35°C, the anaerobic bacteria survive, and the microorganisms play a role, converting organic matter into biogas to treat sewage. the

When there is no sunlight and the heating function of the pool wall cannot be realized through solar energy, or when the temperature is not enough to maintain anaerobic fermentation under low temperature conditions, it is necessary to burn the biogas produced by the anaerobic pool to heat the anaerobic pool wall heating plate As a stable supplement to the solar hot water heating system, the temperature of the anaerobic pool is maintained at a constant temperature, ensuring normal full-load gas production in the low temperature environment in winter, and realizing the stable operation of the sewage treatment system all year round. the

The beneficial effects of the utility model are:

As a clean and renewable clean energy, solar energy can meet the economic, environmental protection and energy-saving heating requirements of anaerobic pools. The biogas generated by burning solar energy is used to heat the circulating water, as the energy supplement of the solar hot water heating system, which can meet the heating requirements of the system in rainy and low temperature environments, and make the sewage treatment system run stably all year round. the

Description of drawings

Fig. 1 is the flowchart of the utility model sewage treatment system

Detailed ways

The utility model will be described in further detail below in conjunction with accompanying drawings and specific examples. As shown in Fig. 1, the constant temperature anaerobic pond sewage treatment system utilizing solar energy and biogas energy heating of the utility model, the specific implementation process is as follows:

The low-temperature water to be heated in the system flows out from the outlet of the heat storage tank, passes through the circulation pump, enters the solar vacuum tube heat collector, is heated in the heat collector, and then flows back into the heat storage tank to utilize the heat heated by the solar energy. The water circulates through the heating coil on the outer wall of the anaerobic fermentation tank to achieve the function of heating the tank wall. the

Using the circulating hot water in the coils on the outer wall of the anaerobic tank, the temperature of the anaerobic tank is kept constant, and the organic matter is converted into biogas. the

Under low temperature conditions, by burning the biogas produced by the anaerobic pool, the circulating water in the wall coil of the anaerobic pool is heated, as a stable supplement to the solar hot water heating system, so that the anaerobic pool can also be kept constant in cold weather temperature. the

Claims (1)

1. A constant temperature anaerobic tank sewage treatment system heated by solar energy and biogas energy, characterized in that: the system is composed of a fermentation tank and a heating system, wherein the fermentation tank body is cylindrical, the bottom of the tank is provided with a plate, and the top of the fermentation tank Covered with a special biogas top membrane, the outer wall of the fermentation tank is distributed with heating coils, and the outer wall heating coils are filled with recyclable water. The heating system includes a solar heat collection system, a solar heating system and a biogas heating system. The solar heat collection system consists of The solar vacuum heat collector is composed of the solar vacuum heat collector connected with the heat storage tank, the heat storage tank connected with the heating coil on the outer wall of the pool, and the biogas heating system connected with the heating coil on the outer wall. the

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