Curved Flow Fabric Biogas Pond
The Curved Flow Fabric Biogas Pond is a new type of biogas pond designed with advanced fermentation technology and pond structure, based on the "round, small, shallow" cylindrical biogas pond. Its main features include:
The pool structure is rational, with raw materials entering the pool and being semi-controlled or fully controlled distributed by分流板, fully utilizing the pool's load capacity and achieving a high gas production rate within the pool volume.
2. Cost-effective with low energy consumption; easy to operate and widely promotable.
3. Utilizing a continuous fermentation process with stable fermentation conditions.
4. The bottom of the tank slopes from the feed inlet towards the discharge outlet, with the lowest point at the bottom of the discharge outlet. Under the effect of the inclined bottom, a flow thrust is formed, enabling the self-flow of materials in and out of the main fermentation tank.
5. The system can utilize external force or internal pressure to agitate, preventing the material from forming a crust.
This pond is suitable for economically prosperous and resource-rich aquaculture regions with high energy consumption (daily feed intake of 100 kilograms). It requires family members to possess a certain level of cultural and technical knowledge, particularly for professional aquaculture and technology households, or farmers seeking to construct biogas ponds.
Two: Red Mud Double-Sided Leather Multi-Functional Biogas Pond
The Double-Sided Red Mud Biogas Digester is a new type of biogas digester developed based on water pressure biogas digester, semi-plastic biogas digester, and dry-wet fermentation pools. It has been designed to meet the demand for crop straw as the primary raw material, featuring primarily:
The fermentation process combines in-pool and out-pile composting, integrating both wet and dry fermentation techniques.
The pool has a high gas production rate, averaging 0.4 cubic meters per cubic meter per day.
3. Simple structure, easy construction, low cost, and low cost of operation.
4. Facilitates commercialization and standardized production, benefiting the standardization of biogas digester construction.
The pool primarily uses crop straw as fermentation material, making it suitable for application in areas with developed agriculture. The pool is affordably priced; to build a 4 cubic meter biogas pool, it requires 500 bricks, 350 kilograms of sand, 150 kilograms of cement, and additional accessories such as the double-sided clay biogas cover, appliances, and pipes, totaling an investment of 250 yuan.
Section 3: Iron Drum Biogas Digester
The iron drum biogas digester employs a dry fermentation process and is a new household biogas digester suitable for cold regions. Its main features are:
1. The tank is compact, allowing for easy material in and out, thus saving labor.
2. The tank body production process is simple, with minimal maintenance required.
3. Quick start-up, abundant gas yield; typically produces gas within 3-5 days after loading, with an average gas yield rate of 0.6-0.8 cubic meters per cubic meter per day.
4. Durable and robust, with a lifespan of up to 10 years.
5. Commercial sales with production not limited by seasons, easily meeting the requirements for standardization, serialization, and normalization.
6. Maintaining a medium-temperature state for an extended period can kill the eggs and bacteria in the fecal raw materials.
Iron drum biogas digester is suitable for regions in the north with relatively low summer temperatures and significant temperature differences between winter and summer.
Step-by-Step Fermentation Multi-Function Biogas Digesters
The two-step fermentation multi-functional biogas digester is based on the theory of the acidogenic and methanogenic stages of biogas fermentation. It is a type of biogas digester that completes the hydrolysis and acidification of biogas fermentation materials and the production of methane in different pools. Main features:
1. The management is user-friendly, requiring minimal large-scale material output year-round. During the fermentation startup phase, when utilizing sludge and leachate, manual stirring and discharge are achieved through a circulating discharge pipe using a piston.
2. High gas production rate. Under conditions of sufficient raw materials and normal fermentation, the gas production rate exceeds the conventional pond by more than double. With appropriate insulation measures during winter, it can be used normally, and the higher the gas production, the stronger the mixing intensity, leading to an even higher gas production rate. The entire system operates in a virtuous cycle.
3. The automatic circulation system composed of the recirculation outlet pipe and the lower recirculation pipe can automatically complete mixing and cracking operations, thereby preventing surface scaling and sedimentation at the bottom.
4. The site occupies minimal space, and the acidification pond can be arranged according to the terrain or utilize a top water return system, positioning the acidification pond close to the pond's top.
5. The acidifying pool material has a high temperature, and the biodegradation of straw and methane conversion in the biogas pool's microorganisms is rapid.
Item 5: Overflow Type Small Domestic Biogas Digester
The Overflow Anaerobic Digester is a new type of biogas digester, based on the pressure-type anaerobic digester, which employs anaerobic sludge bed (UASB) and anaerobic filter fermentation equipment.
Key Features:
1. The fermentation is thorough, with a long flow path for fermentation materials, overcoming the issue of easy short-circuiting in water pressure biogas digesters. The raw materials are decomposed fully, with high utilization rates.
2. Pressure stability not only benefits the combustion of lights and cooking appliances but also resolves the issue of varying pressure in the water pressure tank affecting the metabolic activity of biogas microorganisms.
3. Easy to manage, no need for a major overhaul.
4. It boasts a high gas yield, with an average gas production rate of 0.4 cubic meters per cubic meter per day.
5. Key components are factory-manufactured to ensure pool construction quality.
Six: Saturated Flow Self-Circulating Small Biogas Pond
The Siphon-Flow Self-Circulating Small Biogas Digester is a novel biogas digester that utilizes siphon-flow feeding, extraction, and self-circulation technology within the tank. Its main features include:
Process flow is rational, with affordable pricing.
2. The extraction-type slagging device has prevented the liquid material from scaling and settling.
Achieve automatic circulation of the liquid material, preventing short-circuiting within the pool and ensuring thorough contact between microorganisms and fresh raw materials.
High gas yield, low land occupation
The pond is suitable for the southern regions with thriving aquaculture industries. It is cost-effective, with a capacity of 4 cubic meters and a price range of 260-300 yuan, equating to 65-70 yuan per cubic meter.
Section 7: Floating Cover Biogas Pond
Using animal manure as the fermentation raw material, the feedstock enters from the bottom of the anaerobic pond. The anaerobic pond effluent flows through the overflow pipe from the top into the storage pond. The sludge is discharged into the storage pond through the discharge outlet at the bottom, or returned to the feed pipe to act as a stirrer and to recycle the sludge bacteria, preserving the bacteria and ensuring a uniform mixing of the fermentation raw material with fresh liquid, thereby accelerating the decomposition of the fermentation raw material. Biogas is stored in floating tanks for user consumption.
1. Simple structure, easy to construct. Compatible with molds for the currently promoted hydraulic biogas digesters.
2. Increased the biogas production rate and raw material utilization efficiency. Addressed the issues of low biogas production rate, uneven production during summer and winter, and the problem of insufficient gas production in winter.
3. Addressed the difficulty in discharge. No need to remove settled sludge from the pool within three years; it's labor-light and reliable.
4. Simplified Management: Capable of automatic feeding and overflow, meeting the fertilization needs of farmers, with an annual management labor requirement of no more than one labor day.
This pool is widely applicable to rural household biogas digesters or livestock farm biogas projects using human, animal, and poultry feces as fermentation materials. It operates normally at ground temperatures above 10°C, without being restricted by region.